SJA1105PEL - 5-Port Automotive Gigabit Ethernet Switch LFBGA-159 | NXP
MPN: SJA1105PEL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $17.2 | $172.00 |
| 100 | $15.45 | $1,545.00 |
| 500 | $13.8 | $6,900.00 |
| 1,000 | $12.2 | $12,200.00 |
SJA1105PEL Overview
An automotive Ethernet switch is a Layer-2 networking IC that connects multiple in-vehicle ECUs over twisted-pair copper or fiber, replacing legacy CAN/LIN/FlexRay backbones with deterministic, high-bandwidth links. The SJA1105 family sits within the broader category of Ethernet switches -> Layer-2 networking ICs -> communication controllers -> semiconductor ICs. The switch provides cut-through and store-and-forward forwarding, IEEE 802.1Q VLAN tagging, IEEE 802.1AS time synchronization, and AVB/TSN quality-of-service extensions, making it suitable for ADAS domain controllers, zonal gateways, and infotainment backbones.
Key features include five integrated PHY/MAC ports, hardware-accelerated security with a frame-listing mechanism that limits forwarding to known sources to prevent erroneous or malicious frame injection, a 1 Gbit/s SGMII uplink for connecting to an external SoC, an SPI management interface for host control, and industrial-grade temperature range. The device supports jumbo frames and integrated address-table memory, allowing deep switching tables without external SRAM. The new frame-listing feature explicitly limits the switch data processing to known sources, blocking unknown or hostile traffic.
The SJA1105PEL is pin-compatible with the SJA1105EL/TEL switches, allowing drop-in upgrades on existing designs while adding the security and feature enhancements of the P/Q/R/S family. The /P and /Q variants do not include an SGMII port and remain 100 percent pin-compatible with the SJA1105/SJA1105T switches, while the /R and /S variants add the SGMII interface. ASIL-A compliance reduces the safety-critical ECU design load for ISO 26262 systems, and a safety manual is available on request from NXP.
Typical applications include automotive ADAS sensor fusion gateways, body and chassis zonal controllers, in-vehicle infotainment (IVI) Ethernet backbones, industrial Ethernet switches for harsh environments, and time-sensitive networking (TSN) endpoints. The wide operating-temperature range and automotive-grade qualification also suit heavy-machinery and rail transport networks. When designing with this device, allocate adequate BGA-159 PCB land pattern with via-in-pad or dog-bone fan-out, and verify SPI driver support with the chosen host MCU before committing to layout.
This page synthesizes distributor pricing for the SJA1105PEL, drop-in pin-compatible variants in the SJA1105 family, and practical layout notes for automotive Ethernet gateways not found in the manufacturer datasheet alone.
Drop-in alternatives for SJA1105PEL — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with SJA1105PEL (same form factor and footprint) — differing in Function.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
SJA1105QEL
✅ Drop-In📋 Reference alternative (not in catalog)
SJA1105REL
✅ Drop-In📋 Reference alternative (not in catalog)
SJA1105SELY
✅ Drop-In✓ In Stock
$7.95 / Unit
View Datasheet →SJA1105TEL
✅ Drop-In📋 Reference alternative (not in catalog)
SJA1105EL
✅ Drop-In📋 Reference alternative (not in catalog)
SJA1105PELY
✅ Drop-In📋 Reference alternative (not in catalog)
SJA1105PEL Maximum Ratings & Electrical Characteristics
| Function | 5-port store-and-forward automotive Ethernet switch |
| Number of Ports | 5 |
| Data Rate per Port | 10/100/1000 Mbit/s |
| MAC Interfaces | MII, RMII, RGMII, SGMII |
| Host Interface | SPI |
| Standards Compliance | IEEE 802.3, IEEE 802.1Q, IEEE 802.1AS |
| Forwarding Modes | Store-and-forward |
| AVB/TSN Support | Ethernet and AVB |
| SGMII Port | Not included on /P variant |
| Functional Safety | ISO 26262 ASIL-A |
| Temperature Grade | Industrial |
| Package | 159-LFBGA (12x12 mm) |
| Terminal Form | Ball |
| No. of Terminals | 159 |
| Package Code | LFBGA |
| Package Shape | Square |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Pin Compatibility | 100% pin-compatible with SJA1105/SJA1105T |
SJA1105PEL square Pin Configuration Guide
Pin configuration for SJA1105PEL (square package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for SJA1105PEL.
Refer to the datasheet for full pin configuration.
Typical Applications
SJA1105PEL is suitable for 7 applications: Automotive ADAS Sensor Fusion Gateway, In-Vehicle Infotainment (IVI) Ethernet Backbone, Body and Chassis Zonal Controller, Industrial Ethernet Switch for Harsh Environments, Time-Sensitive Networking (TSN) Endpoint, Heavy Machinery and Rail Transport Network, Smart Charging and Energy Storage Network.
Automotive ADAS Sensor Fusion Gateway
The SJA1105PEL sits at the heart of an ADAS domain controller, aggregating high-bandwidth sensor streams from surround-view cameras, radars, and lidars onto a single Ethernet backbone. Its 5-port architecture at 10/100/1000 Mbit/s supports simultaneous connections to multiple sensor ECUs, while the frame-listing security feature rejects unknown or malicious frames before they reach the perception SoC. The SJA1105PEL's ISO 26262 ASIL-A compliance simplifies safety case documentation, and its industrial temperature rating handles under-hood thermal stress. Per NXP's typical application circuits, the device pairs cleanly with S32K host MCUs and external 100BASE-T1 or 1000BASE-T1 PHYs for a complete zonal-network reference design.
Recommended
In-Vehicle Infotainment (IVI) Ethernet Backbone
For IVI head units that stream 4K display content, surround audio, and telematics data, the SJA1105PEL provides the deterministic QoS needed to keep latency-sensitive traffic isolated from bulk transfers. AVB support prioritizes audio/video streams, and IEEE 802.1Q VLAN tagging partitions the network between infotainment, diagnostics, and rear-seat entertainment domains. The 159-LFBGA compact footprint keeps the PCB area manageable for head-unit chassis, and the SPI host interface allows the main application processor to configure VLANs at runtime. Per NXP reference designs, the SJA1105PEL eliminates the need for a separate Ethernet controller by integrating MACs and forwarding logic in a single IC.
Recommended
Body and Chassis Zonal Controller
Zonal body controllers consolidate door modules, lighting, seat controllers, and climate ECUs onto a single Ethernet segment, replacing legacy CAN/LIN harnesses with weight-saving twisted-pair links. The SJA1105PEL's 5-port count maps naturally to a zonal controller's uplink, four downstream ECU links, and one service/diagnostics port, while its store-and-forward mode ensures error-free delivery for body-control messages. The ISO 26262 ASIL-A qualification aligns with body-domain functional-safety requirements, and per the NXP datasheet, the ASIL-A compliance reduces safety-critical ECU design load compared to non-qualified switches.
Recommended
Industrial Ethernet Switch for Harsh Environments
Outside automotive, the SJA1105PEL is well suited to industrial Ethernet switches deployed in factory automation, machine vision, and process-control cabinets where wide temperature swings and long-life support are mandatory. The industrial temperature grade, 1 Gbit/s per-port throughput, and AVB streaming support enable real-time machine-vision pipelines where multiple GigE-Vision cameras share a backbone. Compared to commercial-grade switches, the SJA1105PEL's hardware-accelerated security adds defense-in-depth against unauthorized lateral movement on the factory floor, and per the NXP datasheet, the device's deterministic forwarding latency simplifies QoS planning for control loops.
Recommended
Time-Sensitive Networking (TSN) Endpoint
Although the SJA1105PEL itself supports Ethernet and AVB rather than full TSN, it can act as a low-cost TSN endpoint when paired with a host SoC running TSN-aware software stacks via the SPI management interface. The deterministic forwarding latency and IEEE 802.1AS time synchronization support ensure that audio/video and control streams meet bounded-latency requirements. Per the NXP family datasheet, designs requiring full TSN scheduling should migrate to the SJA1105REL/SEL variants, but the SJA1105PEL remains a viable endpoint in mixed networks where the TSN bridge resides upstream.
Recommended
Heavy Machinery and Rail Transport Network
Construction equipment, mining vehicles, and rail rolling stock increasingly adopt automotive-grade Ethernet for cabin networks and traction-control backbones, where vibration, dust, and -40 C to +85 C temperature swings defeat commercial switches. The SJA1105PEL's industrial temperature rating, automotive-grade qualification, and 159-LFBGA rugged package suit these environments. The hardware frame-listing prevents unauthorized access from external diagnostic tools, and per NXP documentation, the device's proven design wins in automotive translate directly to harsh-environment industrial deployments.
Recommended
Smart Charging and Energy Storage Network
DC fast-charging stations and battery-energy-storage systems (BESS) use Ethernet to coordinate power modules, payment terminals, and grid-management backhaul. The SJA1105PEL aggregates up to five charger-module links onto a single uplink to the station controller, with AVB QoS prioritizing safety-critical fault messages over metering traffic. The industrial temperature grade handles outdoor cabinet thermal load, and per the NXP datasheet, the SPI host interface allows real-time monitoring of link status and frame counters for predictive maintenance. Compared to commercial switches, the SJA1105PEL's long-term NXP supply commitment reduces obsolescence risk in 10-15 year charger lifecycles.
Recommended
Recommended Products Summary
Engineering reference data for SJA1105PEL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SJA1105QEL | SJA1105REL | SJA1105SEL | SJA1105TEL | SJA1105EL |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 159-LFBGA (12x12) | 159-LFBGA (12x12) - same | 159-LFBGA (12x12) - same | 159-LFBGA (12x12) - same | 159-LFBGA (12x12) - same | 159-LFBGA (12x12) - same |
| Number of Ports | 5 | 5 | 5 | 5 | 5 | 5 |
| SGMII Port | No | No | Yes | Yes | No | No |
| TSN/TTEthernet Support | No (AVB only) | No (AVB only) | No (AVB only) | Yes | Yes | No (AVB only) |
| ISO 26262 ASIL-A Compliance | Yes | Yes | Yes | Yes | Yes | No |
| Frame-Listing Security | Yes | Yes | Yes | Yes | No | No |
| Host Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| Temperature Grade | Industrial | Industrial | Industrial | Industrial | Industrial | Industrial |
Key Differentiators
- Frame-listing security feature isolates forwarding to known sources (vs SJA1105EL)
- ISO 26262 ASIL-A compliance reduces ECU safety documentation load (vs SJA1105TEL)
- 100% pin-compatible upgrade path from original SJA1105/SJA1105T (vs SJA1105REL)
- Cost-optimized Ethernet/AVB without TSN overhead (vs SJA1105SEL)
Design Notes
The 159-LFBGA (12x12 mm) package uses a 0.8 mm ball pitch and requires either via-in-pad with epoxy fill or a dog-bone fan-out to break out all signals. Per IPC-7093 design guidelines for BGA packages, place a continuous ground plane on layer 2 beneath the switch to provide a low-impedance return path for the high-speed MII/RGMII signals. The SJA1105PEL's RGMII traces should be length-matched to within 50 mils and routed over a continuous reference plane to meet the 1 Gbit/s rise-time budget.
Although the SJA1105PEL's power dissipation is modest (estimated 1.5 W at full 5-port 1 Gbit/s load based on typical 1000BASE-T operation), the LFBGA package dissipates heat through the PCB land pads and central thermal balls. Place at least 8 thermal vias in the central ball array to a bottom-side copper pour to keep the junction below 105 C at 85 C ambient. Estimated junction temperature at 1.5 W with theta_JA of 28 C/W (per typical LFBGA-159 land pattern) rises 42 C above ambient - verify with thermocouple measurement on prototype.
Do not confuse SJA1105PEL with the /R variant - the /P omits the SGMII port and is intended as a drop-in upgrade for the original SJA1105/SJA1105T, while the /R adds the SGMII uplink. Also note that SJA1105PEL (tray packaging) and SJA1105PELY (tape-and-reel) share the same die and pinout; choose based on assembly-line preference. Per the NXP datasheet, the SPI driver firmware is family-wide, but the frame-listing security feature is only present on the new P/Q/R/S variants and is not available on the original SJA1105EL/TEL.
The SJA1105PEL's RGMII interface runs at 125 MHz DDR with 2 ns setup/hold margins. Per the NXP datasheet, source-series termination (typically 33 ohm) near the switch's RGMII outputs is recommended to dampen reflections on traces longer than 50 mm. MII at 25 MHz is more forgiving but still requires a continuous ground reference and length matching within 100 mils between clock and data pairs. For 100BASE-T1 or 1000BASE-T1 connections to TJA1100/TJA1101 PHYs, route the MII/RGMII traces at 50 ohm nominal impedance.
Compliance Information
ISO 26262 ASIL-A compliant per NXP datasheet. RoHS and REACH compliant per distributor listings. AEC-Q100 automotive qualification implied by ISO 26262 development flow but specific AEC-Q100 grade letter not enumerated in verified data - see _validation_note.
