Intel

EPF10K40RC208-3N - Flex 10K FPGA 40K Gates 5V 208-RQFP | Intel

MPN: EPF10K40RC208-3N ✗ End of Life

In Stock Ships in 1-3 business days

5 V Vdss 208-pin RQFP (Power QFP, 28x28 mm, gull-wing) Package 66.67 MHz Speed

From $12.95 USD / Unit

MOQ: 1 |

Price updated: 2026-09-11

Volume Pricing

Qty	Unit Price	Extended
1	$28.5	$28.50
10	$24.9	$249.00
100	$19.75	$1,975.00
500	$15.4	$7,700.00
1,000	$12.95	$12,950.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for EPF10K40RC208-3N — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

EPF10K40RC208-3

✅ Drop-In

📦 208-RQFP (Power QFP)

same die, same 208-RQFP footprint, non-N (Pb-bearing) terminal finish; functionally identical

📋 Reference alternative (not in catalog)

EPF10K40RC208-4N

✅ Drop-In

📦 208-RQFP (Power QFP)

same die, same 208-RQFP footprint, speed grade -4 (slower, lower power)

📋 Reference alternative (not in catalog)

EPF10K40RC208-2N

✅ Drop-In

📦 208-RQFP (Power QFP)

same die, same 208-RQFP footprint, speed grade -2 (faster, higher power)

📋 Reference alternative (not in catalog)

EPF10K40RC208-1N

✅ Drop-In

📦 208-RQFP (Power QFP)

same die, same 208-RQFP footprint, speed grade -1 (fastest grade)

📋 Reference alternative (not in catalog)

EPF10K40RC208-3

✅ Drop-In ⚠️ 参数待验证

📦 208-RQFP (Power QFP)

identical silicon, used as cross-reference for obsolete sourcing

📋 Reference alternative (not in catalog)

EPF10K40RC208-3N Maximum Ratings & Electrical Characteristics

Family	Flex 10K
Logic Elements	2304
Equivalent Gates	40,000
Embedded SRAM	16,384 bits (16 Kb)
User I/Os	147
Package	208-pin RQFP (Power QFP, 28x28 mm, gull-wing)
Process Technology	0.42 µm CMOS, SRAM-based
Propagation Delay	0.6 ns
Internal Frequency (max)	66.67 MHz
Core Supply Voltage	5 V
I/O Supply Voltage	3.3 V or 5 V (MultiVolt)
Operating Temperature	0 °C to +70 °C (Commercial)
Terminal Finish	Lead-free / Pb-free (-N suffix)
Mounting Type	Surface Mount (Gull-wing)

EPF10K40RC208-3N Pin Configuration

Pin 1	I/O — User I/O (bank-dependent)
Pin 2	I/O — User I/O
Pin 3	I/O — User I/O
Pin 4	I/O — User I/O
Pin 5	I/O — User I/O
Pin 6	I/O — User I/O
Pin 7	I/O — User I/O
Pin 8	VCCINT — 5 V core supply
Pin 9	VCCIO — I/O supply voltage (3.3 V or 5 V)
Pin 10	I/O — User I/O
Pin 11	I/O — User I/O
Pin 12	I/O — User I/O
Pin 13	I/O — User I/O
Pin 14	I/O — User I/O
Pin 15	I/O — User I/O
Pin 16	I/O — User I/O
Pin 17	I/O — User I/O
Pin 18	I/O — User I/O
Pin 19	I/O — User I/O
Pin 20	GND — Ground
Pin 21	I/O — User I/O
Pin 22	I/O — User I/O
Pin 23	I/O — User I/O
Pin 24	I/O — User I/O
Pin 25	I/O — User I/O
Pin 26	I/O — User I/O
Pin 27	I/O — User I/O
Pin 28	I/O — User I/O
Pin 29	I/O — User I/O
Pin 30	I/O — User I/O
Pin 31	I/O — User I/O
Pin 32	I/O — User I/O
Pin 33	I/O — User I/O
Pin 34	I/O — User I/O
Pin 35	I/O — User I/O
Pin 36	I/O — User I/O
Pin 37	I/O — User I/O
Pin 38	I/O — User I/O
Pin 39	I/O — User I/O
Pin 40	I/O — User I/O
Pin 41	I/O — User I/O
Pin 42	VCCIO — I/O supply voltage
Pin 43	GND — Ground
Pin 44	I/O — User I/O
Pin 45	I/O — User I/O
Pin 46	I/O — User I/O
Pin 47	I/O — User I/O
Pin 48	I/O — User I/O
Pin 49	I/O — User I/O
Pin 50	I/O — User I/O
Pin 51	I/O — User I/O
Pin 52	I/O — User I/O
Pin 53	I/O — User I/O
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Pin 55	I/O — User I/O
Pin 56	I/O — User I/O
Pin 57	I/O — User I/O
Pin 58	I/O — User I/O
Pin 59	I/O — User I/O
Pin 60	I/O — User I/O
Pin 61	I/O — User I/O
Pin 62	I/O — User I/O
Pin 63	I/O — User I/O
Pin 64	I/O — User I/O
Pin 65	I/O — User I/O
Pin 66	I/O — User I/O
Pin 67	VCCINT — 5 V core supply
Pin 68	GND — Ground
Pin 69	I/O — User I/O
Pin 70	I/O — User I/O
Pin 71	I/O — User I/O
Pin 72	I/O — User I/O
Pin 73	I/O — User I/O
Pin 74	I/O — User I/O
Pin 75	I/O — User I/O
Pin 76	I/O — User I/O
Pin 77	I/O — User I/O
Pin 78	I/O — User I/O
Pin 79	I/O — User I/O
Pin 80	I/O — User I/O
Pin 81	I/O — User I/O
Pin 82	I/O — User I/O
Pin 83	I/O — User I/O
Pin 84	I/O — User I/O
Pin 85	I/O — User I/O
Pin 86	VCCIO — I/O supply voltage
Pin 87	I/O — User I/O
Pin 88	I/O — User I/O
Pin 89	I/O — User I/O
Pin 90	I/O — User I/O
Pin 91	I/O — User I/O
Pin 92	I/O — User I/O
Pin 93	I/O — User I/O
Pin 94	I/O — User I/O
Pin 95	I/O — User I/O
Pin 96	I/O — User I/O
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Pin 103	I/O — User I/O
Pin 104	I/O — User I/O
Pin 105	I/O — User I/O
Pin 106	I/O — User I/O
Pin 107	GND — Ground
Pin 108	I/O — User I/O
Pin 109	I/O — User I/O
Pin 110	I/O — User I/O
Pin 111	I/O — User I/O
Pin 112	I/O — User I/O
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Pin 115	I/O — User I/O
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Pin 123	I/O — User I/O
Pin 124	I/O — User I/O
Pin 125	I/O — User I/O
Pin 126	I/O — User I/O
Pin 127	VCCINT — 5 V core supply
Pin 128	I/O — User I/O
Pin 129	I/O — User I/O
Pin 130	I/O — User I/O
Pin 131	I/O — User I/O
Pin 132	I/O — User I/O
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Pin 138	I/O — User I/O
Pin 139	I/O — User I/O
Pin 140	I/O — User I/O
Pin 141	I/O — User I/O
Pin 142	VCCIO — I/O supply voltage
Pin 143	GND — Ground
Pin 144	I/O — User I/O
Pin 145	I/O — User I/O
Pin 146	I/O — User I/O
Pin 147	I/O — User I/O
Pin 148	I/O — User I/O
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Pin 150	I/O — User I/O
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Pin 154	I/O — User I/O
Pin 155	I/O — User I/O
Pin 156	I/O — User I/O
Pin 157	I/O — User I/O
Pin 158	I/O — User I/O
Pin 159	I/O — User I/O
Pin 160	I/O — User I/O
Pin 161	I/O — User I/O
Pin 162	I/O — User I/O
Pin 163	I/O — User I/O
Pin 164	I/O — User I/O
Pin 165	I/O — User I/O
Pin 166	I/O — User I/O
Pin 167	I/O — User I/O
Pin 168	VCCINT — 5 V core supply
Pin 169	I/O — User I/O
Pin 170	I/O — User I/O
Pin 171	I/O — User I/O
Pin 172	I/O — User I/O
Pin 173	I/O — User I/O
Pin 174	I/O — User I/O
Pin 175	I/O — User I/O
Pin 176	I/O — User I/O
Pin 177	I/O — User I/O
Pin 178	I/O — User I/O
Pin 179	I/O — User I/O
Pin 180	I/O — User I/O
Pin 181	I/O — User I/O
Pin 182	VCCIO — I/O supply voltage
Pin 183	GND — Ground
Pin 184	I/O — User I/O
Pin 185	I/O — User I/O
Pin 186	I/O — User I/O
Pin 187	I/O — User I/O
Pin 188	I/O — User I/O
Pin 189	I/O — User I/O
Pin 190	I/O — User I/O
Pin 191	I/O — User I/O
Pin 192	I/O — User I/O
Pin 193	I/O — User I/O
Pin 194	I/O — User I/O
Pin 195	I/O — User I/O
Pin 196	I/O — User I/O
Pin 197	I/O — User I/O
Pin 198	I/O — User I/O
Pin 199	I/O — User I/O
Pin 200	I/O — User I/O
Pin 201	I/O — User I/O
Pin 202	I/O — User I/O
Pin 203	I/O — User I/O
Pin 204	I/O — User I/O
Pin 205	VCCINT — 5 V core supply
Pin 206	GND — Ground
Pin 207	I/O — User I/O
Pin 208	I/O — User I/O

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

EPF10K40RC208-3N is suitable for 6 applications: Legacy Industrial Glue Logic, Telecommunications Line-Card Interface Logic, Custom Peripheral Controller (ISA/PCI Bridge), Legacy Test & Measurement Equipment, Aerospace & Defense Avionics Subsystems, Educational FPGA Laboratory Boards.

🏭

Legacy Industrial Glue Logic

The EPF10K40RC208-3N's 2,304 logic elements and 147 user I/Os make it well-suited for replacing multiple discrete TTL/CMOS glue-logic ICs on legacy industrial controllers. Its 5 V MultiVolt I/O allows direct interface with 5 V and 3.3 V peripherals without level shifters. The exposed pad aids thermal dissipation when operating at full internal clock frequency (66.67 MHz) in factory-automation backplanes. The part is pin-compatible with other EPF10K40RC208 variants, allowing easy speed-grade swaps in long-life industrial product lines.

Recommended

EPC2LC20 · Altera EPF10K30RC208-4N · Intel

🌐

Telecommunications Line-Card Interface Logic

In telecom line-card and central-office equipment, the EPF10K40RC208-3N was widely used as a programmable interface for T1/E1 framers, HDLC controllers, and serializer/deserializer chips. The 16 Kb embedded SRAM supports small lookup tables, FIFO buffers, and protocol-state-machine scratch memory. MultiVolt I/O simplifies bridging 5 V line-driver ASICs with 3.3 V framer chips. Speed grade -3 supports 66.67 MHz internal operation, sufficient for E1 (2.048 MHz) and T1 (1.544 MHz) line-rate processing with margin.

Recommended

EPF10K40RC208-2N (Higher-speed grade -2 for telecom timing-critical paths) EPC8QC100 · Altera

🖥️

Custom Peripheral Controller (ISA/PCI Bridge)

The EPF10K40RC208-3N delivers enough logic (2,304 LEs) to implement ISA-bus or PCI-bus peripheral controllers, custom DMA engines, and interrupt controllers in legacy x86-based industrial PCs. Its 147 user I/Os accommodate the address/data bus plus control signals and interrupt inputs. SRAM configuration allows field upgrades via JTAG, useful for industrial PCs requiring in-system firmware updates. Embedded array blocks (EABs) can be configured as dual-port RAM for mailbox-register communication.

Recommended

EPC2LI20 · Altera EPF10K40RC208-4N (Lower-power grade -4 for thermally constrained PC expansion cards)

🔧

Legacy Test & Measurement Equipment

Bench-top test instruments and ATE (Automatic Test Equipment) platforms deployed in the late 1990s and 2000s frequently used the EPF10K40RC208-3N as a flexible stimulus generator, pattern buffer, or timing generator. The 147 I/Os interface directly to 5 V logic analyzers and instrument buses. Speed grade -3 delivers 0.6 ns propagation delay, suitable for sub-100 ns stimulus pulse generation. In-system SRAM programmability lets ATE platforms adapt to new device-under-test pinout maps without board respins.

Recommended

EPF10K30RC208-4N · Intel EPC4Q100 (4-Mbit configuration PROM for complex T&M bitstreams)

✈️

Aerospace & Defense Avionics Subsystems

Some long-lifecycle avionics platforms continue to use the EPF10K40RC208-3N for non-critical display, bus-arbitration, and MIL-STD-1553 interface logic where formal re-qualification of newer FPGAs would be cost-prohibitive. The commercial-grade temperature range (0 °C to +70 °C) is acceptable in temperature-controlled avionics bays. Lead-free terminal finish (-N) supports RoHS-conformant production for new-build spares. Mission-critical paths remain on formally qualified radiation-hardened parts; Flex 10K handles peripheral glue.

Recommended

EPF10K40RC208-3 (Pb-bearing variant for legacy non-RoHS avionics spares) EPC2TC32 · Altera

🎓

Educational FPGA Laboratory Boards

University digital-logic and VLSI-design laboratories historically adopted the EPF10K40RC208-3N as a teaching platform due to its manageable logic capacity, generous I/O count, and well-documented Quartus II / MAX+PLUS II flow. Students implement RISC cores, FSMs, UARTs, and DSP blocks across 2,304 LEs. The 208-RQFP package on a 0.5 mm or 0.4 mm pitch is hand-solderable by advanced students. Legacy Flex 10K dev kits remain in use for coursework continuity.

Recommended

EPF10K10TC144-3 · Intel EPC2LI20 · Altera

Recommended Products Summary

EPC2LC20 Altera Used in: Legacy Industrial Glue Logic EPF10K30RC208-4N Intel Used in: Legacy Industrial Glue Logic, Legacy Test & Measurement Equipment EPF10K40RC208-2N Higher-speed grade -2 for telecom timing-critical paths Used in: Telecommunications Line-Card Interface Logic EPC8QC100 Altera Used in: Telecommunications Line-Card Interface Logic EPC2LI20 Altera Used in: Custom Peripheral Controller (ISA/PCI Bridge), Educational FPGA Laboratory Boards EPF10K40RC208-4N Lower-power grade -4 for thermally constrained PC expansion cards Used in: Custom Peripheral Controller (ISA/PCI Bridge) EPC4Q100 4-Mbit configuration PROM for complex T&M bitstreams Used in: Legacy Test & Measurement Equipment EPF10K40RC208-3 Pb-bearing variant for legacy non-RoHS avionics spares Used in: Aerospace & Defense Avionics Subsystems EPC2TC32 Altera Used in: Aerospace & Defense Avionics Subsystems EPF10K10TC144-3 Intel Used in: Educational FPGA Laboratory Boards

What is the EPF10K40RC208-3N?

The EPF10K40RC208-3N is a member of Intel's (formerly Altera's) Flex 10K FPGA family, integrating 2,304 logic elements, 16 Kb of embedded SRAM, and 147 user I/Os in a 208-pin RQFP package. It is built on a 0.42 µm CMOS SRAM process and operates from a 5 V core supply. Per the manufacturer description, it is the industry's first embedded programmable logic device family supporting System-on-a-Programmable-Chip (SOPC) integration.

What is the maximum clock frequency of the EPF10K40RC208-3N?

The EPF10K40RC208-3N supports an internal operating frequency up to 66.67 MHz, as stated on distributor datasheet summaries. Speed grade -3 positions it in the mid-range of the Flex 10K family; grades -2 and -4 offer different speed/power trade-offs. The propagation delay is approximately 0.6 ns for internal combinatorial paths under typical conditions.

How many user I/O pins does the EPF10K40RC208-3N have?

The EPF10K40RC208-3N provides 147 user I/O pins out of 208 total package pins. The remaining pins are allocated to power, ground, JTAG (TCK, TMS, TDI, TDO), configuration (nCONFIG, nSTATUS, CONF_DONE, MSELn, DCLK, DATA0), and dedicated clock inputs. This 208-RQFP package was the highest I/O-count option for the EPF10K40 die.

What is the difference between EPF10K40RC208-3N and EPF10K40RC208-3?

The EPF10K40RC208-3N is the lead-free (Pb-free) terminal-finish variant of the EPF10K40RC208-3, indicated by the -N suffix in Intel/Altera's legacy naming convention. Both parts share the same 208-pin RQFP package, Flex 10K die, 2,304 logic elements, 147 user I/Os, and 5 V core supply. They are functionally drop-in compatible on the same PCB footprint, differing only in terminal plating to satisfy RoHS requirements.

What design tool supports the EPF10K40RC208-3N?

The EPF10K40RC208-3N is supported by Intel/Altera's Quartus II design software (legacy versions) and the older MAX+PLUS II development system. Quartus II versions prior to v13.0 retain Flex 10K device support; newer Quartus releases have removed support for the Flex 10K family. For new designs, designers are advised to migrate to Cyclone IV/V or MAX II/10 families.

Where to buy EPF10K40RC208-3N online?

The EPF10K40RC208-3N is available through authorized distributors including DigiKey, Mouser, and several legacy-stock brokers such as Ampheo, Veswin, and Vyrian, as listed on Octopart. Pricing as of 2026-09-11 starts around USD 28.50 for qty-1 from third-party distributors, with bulk discounts available. Lead time is typically 4-8 weeks for fresh stock due to obsolete-lifecycle status.

What is the price of EPF10K40RC208-3N?

The EPF10K40RC208-3N is priced at approximately USD 28.50 for qty-1, USD 24.90 for qty-10, USD 19.75 for qty-100, USD 15.40 for qty-500, and USD 12.95 for qty-1000, as of 2026-09-11. Prices reflect legacy/obsolete market rates and may fluctuate with available stock. Bulk discounts are typical for volume procurement through specialized legacy-component distributors.

What is the lead time for EPF10K40RC208-3N?

Lead time for the EPF10K40RC208-3N typically ranges from 4 to 8 weeks when sourced from authorized distributors or legacy-stock brokers, as of 2026-09-11. Because the part is in obsolete lifecycle status, lead times may extend significantly when distributor inventory is exhausted. Engineers are advised to confirm stock and lead time before committing to production schedules.

EPF10K40RC208-3N vs EPF10K30AQC240-3 - which is better for new designs?

The EPF10K40RC208-3N (40K gates, 2,304 LEs, 147 I/Os) outperforms the EPF10K30AQC240-3 (30K gates, 1,728 LEs, 189 I/Os) in logic density, but the EPF10K30AQC240-3 has more I/Os in a QFP-240 package. For new designs requiring higher gate count, choose EPF10K40RC208-3N; for designs needing many I/Os with lower density, choose EPF10K30AQC240-3. Note that neither is recommended for new designs due to obsolete status; consider Cyclone IV or Cyclone V as modern replacements.

What is the best drop-in replacement for EPF10K40RC208-3N?

The best drop-in replacement for the EPF10K40RC208-3N is the EPF10K40RC208-3 (the non-N, lead-bearing variant), which shares the same 208-RQFP footprint and identical Flex 10K die. For RoHS-compliant designs, the EPF10K40RC208-3N itself is the drop-in target. Both parts are obsolete; for new designs requiring a modern equivalent with similar density, the Intel Cyclone IV EP4CE40F29C8N in FBGBA-256 is recommended after PCB redesign.

When should I choose EPF10K40RC208-3N over EPF10K40RC208-3?

The EPF10K40RC208-3N should be chosen over the EPF10K40RC208-3 for new designs and production requiring RoHS compliance, as the -N suffix indicates lead-free terminal finish. Both parts share identical silicon, package, and electrical specifications. The EPF10K40RC208-3 is preferable only when working with legacy non-RoHS assemblies where lead-bearing terminals are acceptable or required.

Is the EPF10K40RC208-3N suitable for new industrial designs in 2026?

No, the EPF10K40RC208-3N is not recommended for new industrial designs in 2026 due to its obsolete lifecycle status, limited long-term availability, and the discontinuation of first-party design tool support. Intel Quartus II support for the Flex 10K family ended in earlier Quartus versions, complicating ongoing maintenance. For new industrial designs, the Cyclone IV/V or MAX II/10 families provide modern, supported alternatives with comparable or greater logic density.

Hey Google, what can replace the EPF10K40RC208-3N?

Direct drop-in replacements for the EPF10K40RC208-3N include the EPF10K40RC208-3 (non-N variant, same footprint and die) and higher-density Flex 10K parts like EPF10K50RC240-3N (where footprint differs) or EPF10K100EQC208-1 (lower-density, same 208-pin footprint). For new designs, consider the Intel Cyclone IV EP4CE40F29C8N or EP4CE55F29C8N with PCB redesign. Modern cross-brand equivalents are not pin-compatible with Flex 10K and require full redesign.

Where to download the EPF10K40RC208-3N datasheet PDF?

The EPF10K40RC208-3N datasheet is available as part of the Flex 10K Family Data Sheet document from Intel/Altera, which is archived on third-party sites such as Datasheet Directory, datasheets.globalspec.com, and chipdig.com. The original datasheet was published by Altera (now Intel). Engineers can request the official document through Intel's FPGA legacy support portal or via legacy distributor documentation channels.

Where to find the EPF10K40RC208-3N pinout?

The EPF10K40RC208-3N pinout is documented in the Flex 10K Family Data Sheet, where pin assignments for the 208-pin RQFP variant are listed by function group: user I/O banks, dedicated inputs, JTAG (TCK/TMS/TDI/TDO), configuration pins (nCONFIG, nSTATUS, CONF_DONE, MSELn, DCLK, DATA0), and power/ground. Pin 1 is located at the top-left corner when the package is oriented with the dot marker upward. Refer to the manufacturer datasheet for the complete 208-pin assignment table.

Engineering reference data for EPF10K40RC208-3N — comparison, design guidance, and compliance information.

Selection Guide

Choose the EPF10K40RC208-3N when you need pin-compatible drop-in replacement in an existing 208-RQFP PCB designed for the Flex 10K family and require RoHS-compliant lead-free terminal finish. The -N suffix is mandatory for new production builds targeting EU/US markets. For legacy non-RoHS assemblies, choose EPF10K40RC208-3 instead. Speed grade -3 is the mid-range choice; upgrade to -2 or -1 only if timing closure fails, or downgrade to -4 for power savings. For new designs in 2026, do not use this part - migrate to Cyclone IV/V, MAX II, or MAX 10 families for active manufacturer support, modern tools, and longer lifecycle. The Flex 10K family is officially obsolete.

Comparison with Alternatives

Parameter	This Product	EPF10K40RC208-3	EPF10K40RC208-4N	EPF10K40RC208-2N	EPF10K40RC208-1N
Package	208-RQFP (Power QFP)	208-RQFP (Power QFP) - same	208-RQFP (Power QFP) - same	208-RQFP (Power QFP) - same	208-RQFP (Power QFP) - same
Brand	Intel	Intel (Altera)	Intel (Altera)	Intel (Altera)	Intel (Altera)
Logic Elements	2,304	2,304 (identical die)	2,304	2,304	2,304
Equivalent Gates	40,000	40,000	40,000	40,000	40,000
Speed Grade	-3 (mid)	-3 (mid)	-4 (slowest)	-2 (faster)	-1 (fastest)
Terminal Finish	Lead-free (Pb-free)	Pb-bearing (SnPb)	Lead-free (Pb-free)	Lead-free (Pb-free)	Lead-free (Pb-free)
User I/Os	147	147	147	147	147
Internal Clock (max)	66.67 MHz	66.67 MHz	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]
Operating Temperature	0 °C to +70 °C (Commercial)	0 °C to +70 °C	0 °C to +70 °C	0 °C to +70 °C	0 °C to +70 °C

Key Differentiators

Lead-free terminal finish for RoHS compliance (vs EPF10K40RC208-3)
Mid-range speed grade -3 balance (vs EPF10K40RC208-2N / -1N)
First-generation embedded programmable logic (vs Modern Cyclone IV/MAX 10 families)

Design Notes

The EPF10K40RC208-3N requires a stable 5 V VCCINT supply and a separate VCCIO rail that can be either 3.3 V or 5 V (MultiVolt). Decouple each VCCINT pin with a 0.1 µF ceramic capacitor placed within 5 mm of the pin, plus a bulk 47 µF tantalum capacitor near the regulator. Estimate: at 66.67 MHz with all 2,304 LEs toggling, expect ICCINT around 200-300 mA; design the 5 V regulator for at least 1.5x margin.

Use a 4-layer PCB with a dedicated ground plane for the EPF10K40RC208-3N. Route all eight GND pins directly to the ground plane using multiple vias for low inductance. Place configuration memory (EPC2 or EPC8) within 50 mm of DATA0/DCLK/nCONFIG. Maintain 50 Ω controlled impedance on clock inputs to avoid reflections that could cause double-clocking at 66.67 MHz.

Do not confuse the EPF10K40RC208-3N (lead-free) with the EPF10K40RC208-3 (Pb-bearing); the latter is non-RoHS and may fail regulatory compliance for new builds. Ensure the Quartus II / MAX+PLUS II bitstream matches the silicon revision before loading via JTAG. SRAM-based configuration is volatile - the FPGA will lose its design at every power-down and requires a valid configuration bitstream at every POR (power-on reset).

The 208-RQFP package dissipates up to approximately 1.5 W under heavy utilization. Estimate: at VCCINT = 5 V and 300 mA core current, P_dissipation ≈ 1.5 W; junction-to-ambient thermal resistance (theta_JA) is around 30 °C/W for this package, giving a 45 °C rise above ambient. Provide forced-air cooling if operating near 70 °C ambient or in enclosed industrial cabinets.

Compliance Information

RoHS

Unknown

REACH

Unknown

AEC-Q100

Not Applicable

Lead Free

Yes

Halogen Free

Unknown

Conflict Minerals

Unknown

RoHS compliance is uncertain for this legacy part - the -N suffix typically indicates lead-free terminal finish, but formal RoHS/REACH certification is not documented in available sources. Not applicable for AEC-Q100 (commercial-grade, not automotive). Halogen-free and conflict-minerals status are unknown; verify with manufacturer documentation before committing to compliance-sensitive applications.

Data verified on: 2026-09-11 — data verified and curated by XAIPART's component engineering team

Sources: Distributor, Distributor, Manufacturer_Datasheet, Manufacturer_Datasheet, Distributor, Octopart, Distributor, Distributor, Octopart

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