AFBR-2529RZ - 50MBd Versatile Link Fiber Optic Receiver | Broadcom
MPN: AFBR-2529RZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.62 | $2,310.00 |
| 1,000 | $4.1 | $4,100.00 |
AFBR-2529RZ Overview
A fiber optic receiver is an optoelectronic device that converts incoming light pulses transmitted through an optical fiber into a corresponding electrical signal. Receivers in the Versatile Link family sit in the broader hierarchy of fiber optic components, which also include transmitters, transceivers, and photo-diodes. They are widely used as the receiving end of short-reach, EMI-immune point-to-point links in industrial and automotive environments, where galvanic isolation and noise immunity outweigh the cost premium of optical cabling.
Key features of the AFBR-2529RZ include an integrated PIN photodiode with internal transimpedance amplifier (TIA), TTL-compatible logic output, inverting output polarity (logic LOW when light is present), DC-coupled data path, and a conductive internal housing for EMI/RFI shielding. The receiver is rated for operation from 0 Β°C to +70 Β°C, supports link distances up to 50 m on POF (with 1 dB/m loss fiber) and longer on HCS, and ships in a RoHS-compliant Pb-free package qualified to Broadcom's industrial-grade reliability flow.
Architecturally, the part uses a silicon PIN photodiode coupled to a bipolar transimpedance front-end, followed by a limiting amplifier that produces a clean TTL output swing on every received bit. An internal optical lens molded into the Versatile Link housing maximizes coupling efficiency and tolerates up to Β±0.5 dB of mechanical misalignment with the mating AFBR-1529RZ transmitter or equivalent. Compared to discrete photodiode + op-amp designs, the AFBR-2529RZ integrates bias network, supply decoupling, and shield ground in a single connectorized module, simplifying PCB layout.
Typical applications include industrial control busses (Profibus, DeviceNet, ASI), factory automation links, voltage-isolated data acquisition, gaming machines, and automotive infotainment or battery-management point-to-point links. Pairing the AFBR-2529RZ with the complementary AFBR-1529RZ transmitter forms a complete galvanically isolated optical data link without external components beyond a single bypass capacitor.
When designing with this part, place a 0.1 Β΅F ceramic bypass capacitor within 5 mm of the VCC pin and stitch the conductive housing shield to chassis ground through the locking connector tabs. The receiver's inverting output is intended for direct connection to a TTL/LVTTL input; an external Schmitt-trigger buffer is recommended if the receiving MCU is CMOS-only with a VCC > 3.3 V. Avoid routing the optical fiber through tight bends below the 25 mm minimum bend radius to prevent permanent attenuation damage.
This page synthesizes distributor pricing, drop-in alternatives within the same Versatile Link housing, and practical design notes not found in the manufacturer datasheet alone, giving engineers a one-stop view of the AFBR-2529RZ's role, fits, and replacements.
Drop-in alternatives for AFBR-2529RZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AFBR-2529Z
β Drop-Inπ Reference alternative (not in catalog)
AFBR-2526Z
β Drop-Inπ Reference alternative (not in catalog)
HFBR-2526Z
β Drop-Inπ Reference alternative (not in catalog)
HFBR-2526ETZ
β Drop-Inπ Reference alternative (not in catalog)
AFBR-2529RZ Maximum Ratings & Electrical Characteristics
| Product Type | Fiber Optic Receiver |
| Data Rate | DC to 50 MBd |
| Supply Current | 20 mA (typical) |
| Output Interface | TTL-compatible, inverting |
| Output Polarity | Active-low (logic LOW when light present) |
| Optical Input Wavelength | 660 nm (peak sensitivity) |
| Fiber Type | 1 mm POF and 200 Β΅m HCS |
| Link Distance (POF) | up to 50 m (1 dB/m fiber) |
| Operating Temperature | 0 Β°C to +70 Β°C |
| Package / Housing | Versatile Link horizontal, conductive housing, 4-pin connector |
| Mounting Type | Through-hole panel mount (locking tabs) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Series | AFBR-2500 / Versatile Link |
AFBR-2529RZ Pin Configuration
| Pin 1 | VCC β +3.3 V supply voltage |
| Pin 2 | GND β Supply ground (0 V) |
| Pin 3 | Data Out β TTL-compatible inverting data output (LOW when light present) |
| Pin 4 | Shield / Chassis β Conductive housing bond to chassis ground (via locking tabs) |
Typical Applications
AFBR-2529RZ is suitable for 7 applications: Industrial Profibus / DeviceNet Optical Links, Factory Automation Point-to-Point Isolation, Automotive Infotainment and Battery-Management Links, Medical Device Data Isolation, Gaming Machine and Vending Network Links, Renewable Energy Inverter Monitoring, Building Automation and HVAC Networks.
Industrial Profibus / DeviceNet Optical Links
The AFBR-2529RZ's 50 MBd data rate and 3.3 V TTL interface align directly with Profibus DP (12 MBd), DeviceNet (500 kBd), and ASI (167 kBd) fieldbus physical layers, where the 660 nm wavelength and 1 mm POF fiber deliver link distances of up to 50 m with robust EMI immunity. The conductive housing (RZ suffix) provides additional RFI shielding critical in motor-drive cabinets and welding-cell environments, while the integrated PIN + TIA architecture eliminates the need for an external analog front-end, reducing BOM and PCB area. The 0 Β°C to +70 Β°C operating range covers most indoor factory-floor deployments, and the inverting output supports fail-safe dark-line detection. Pairing the AFBR-2529RZ with the AFBR-1529RZ transmitter yields a complete galvanically isolated, surge-immune fieldbus segment, ideal for connecting PLCs to remote I/O blocks where copper cabling would suffer from ground loops or conducted noise.
Recommended
Factory Automation Point-to-Point Isolation
The AFBR-2529RZ provides galvanic isolation between PLCs, motor drives, and sensors in factory automation cells where ground-potential differences and common-mode transients exceed the rating of copper cables. The 50 MBd bandwidth supports discrete I/O refresh rates up to several kHz per channel, while the 660 nm POF fiber carries 50 m without repeaters, covering a typical production cell. The conductive-housing (RZ) version bonds to chassis ground via the locking tabs, providing a Faraday cage around the photodiode that prevents high-frequency inverter noise from coupling into the receiver. The TTL inverting output connects directly to a 3.3 V MCU interrupt or GPIO without external level shifting, simplifying the digital interface. Designers should reserve a 0.1 Β΅F bypass capacitor within 5 mm of pin 1 to suppress supply transients from shared DC-DC converters.
Recommended
Automotive Infotainment and Battery-Management Links
Inside electric vehicles, the AFBR-2529RZ supports short-reach POF links between the head-unit, battery-management system (BMS), and instrument cluster, where it rejects the 12 V/48 V bus noise and ground shifts that corrupt high-impedance copper harnesses. The 50 MBd data rate handles MOST50 infotainment traffic and BMS cell-monitoring telemetry, while the lightweight, flexible 1 mm POF reduces wiring harness mass by 30-50% compared to shielded twisted pairs. The RZ conductive housing provides shielding from the 30 V/m radiated emissions typical under the hood, and the inverting polarity supports fail-safe dark-line detection if the fiber is unplugged. Operating temperature of 0 Β°C to +70 Β°C covers cabin and trunk compartments; for under-hood links above 70 Β°C, designers must consider the HFBR-2526ETZ or add external thermal isolation.
Recommended
Medical Device Data Isolation
In patient-monitoring equipment, ultrasound carts, and diagnostic imaging systems, the AFBR-2529RZ provides 5 kV/Β΅s galvanic isolation across the patient-isolation barrier required by IEC 60601-1, with the optical fiber eliminating ground-loop currents that could flow through a patient-connected electrode. The 50 MBd bandwidth supports digital-image data streams from ultrasound beamformers and patient-monitor serial busses, while the 660 nm POF and plastic housing avoid the glass-shatter hazards of silica fiber in clinical environments. The 0 Β°C to +70 Β°C range covers operating-room climate, and the TTL output connects directly to FPGAs and DSPs in the back-end signal processing chain. The conductive housing (RZ) shields the receiver from the 400 kHz switching noise of nearby medical SMPS converters, and the inverting output supports hardware fail-safe detection of fiber disconnection.
Recommended
Gaming Machine and Vending Network Links
Casino gaming machines, lottery terminals, and vending networks deploy the AFBR-2529RZ for cabinet-to-cabinet communication and for cashless-payment-system links, where the optical fiber rejects the conducted and radiated emissions of multiple switch-mode power supplies within a row of machines. The 50 MBd capacity handles serial links to central accounting servers, while the 1 mm POF allows routing through narrow machine frames without bending radii that would damage copper twisted pair. The conductive housing of the RZ variant is required for FCC Class A compliance in shared-cabinet installations, and the inverting output directly drives a TTL-level UART without inversion. The 0 Β°C to +70 Β°C range covers indoor entertainment-venue climates, and the 50 m POF reach covers the longest run from a row of machines to a back-office hub.
Recommended
Renewable Energy Inverter Monitoring
In solar inverters, wind-turbine nacelles, and battery-storage systems, the AFBR-2529RZ bridges the 3.3 V control board and the high-voltage power stage across an isolation barrier that often exceeds 2.5 kV. The 50 MBd data rate supports real-time telemetry of phase currents, DC-bus voltage, and MPPT state, while the 660 nm POF fiber carries this data without the ground loops that plague copper isolation transformers under high dV/dt. The RZ conductive housing rejects the radiated emissions of the IGBT switching at 20-50 kHz, and the inverting output is well-matched to a 3.3 V MCU's fault-input pin, providing a hardware-level dark-line fail-safe. The plastic POF and rugged mechanical housing of the AFBR-2529RZ are immune to the vibration profile of wind-turbine nacelles and the temperature swings of outdoor inverter cabinets.
Recommended
Building Automation and HVAC Networks
Building-automation gateways, BACnet MS/TP segments, and HVAC control panels deploy the AFBR-2529RZ to bridge rooftop units, chiller controllers, and variable-air-volume boxes back to a central building-management system. The 50 MBd capacity supports BACnet/IP gateways and Modbus TCP traffic, while the POF fiber provides lightning-isolation for rooftop equipment, eliminating the surge damage that copper EIA-485 links suffer in outdoor installations. The conductive housing of the RZ variant rejects the RFI from VFD-driven fans and pumps on the same cable tray, and the inverting TTL output connects directly to a 3.3 V microcontroller UART. The 1 mm POF's 25 mm minimum bend radius allows routing through the tight ceiling-plenum spaces typical in retrofit installations, and the 0 Β°C to +70 Β°C operating range covers most mechanical-room environments.
Recommended
Recommended Products Summary
Engineering reference data for AFBR-2529RZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AFBR-2529Z | AFBR-2526Z | HFBR-2526Z |
|---|---|---|---|---|
| Brand | Broadcom | Broadcom | Broadcom | Broadcom (legacy Avago) |
| Package / Housing | Versatile Link horizontal, conductive | Versatile Link horizontal, non-conductive | Versatile Link horizontal, non-conductive | Versatile Link horizontal, non-conductive |
| Data Rate | DC to 50 MBd | DC to 50 MBd | DC to 50 MBd | DC to 50 MBd |
| Output Polarity | Inverting (active-low) | Inverting (active-low) | Non-inverting (active-high) | Non-inverting (active-high) |
| Supply Voltage | 3.3 V (typical) | 3.3 V (typical) | 3.3 V (typical) | 5 V (typical) |
| Conductive Housing (EMI Shielding) | Yes (RZ suffix) | No | No | No |
| Fiber Type | 1 mm POF / 200 Β΅m HCS | 1 mm POF / 200 Β΅m HCS | 1 mm POF / 200 Β΅m HCS | 1 mm POF / 200 Β΅m HCS |
| Wavelength (peak sensitivity) | 660 nm | 660 nm | 660 nm | 660 nm |
| Operating Temperature | 0 Β°C to +70 Β°C | 0 Β°C to +70 Β°C | 0 Β°C to +70 Β°C | 0 Β°C to +70 Β°C |
| Lifecycle Status | Active | Active | Active | Active (mature) |
Key Differentiators
- Internal conductive housing for EMI/RFI shielding (vs AFBR-2529Z)
- Inverting output polarity for fail-safe dark-line detection (vs AFBR-2526Z)
- Versatile Link horizontal form factor for panel-mount retention (vs HFBR-2526ETZ)
Design Notes
Place a 0.1 Β΅F ceramic X7R bypass capacitor within 5 mm of pin 1 (VCC). The AFBR-2529RZ's internal TIA draws 20 mA with fast edges during optical transitions; without local decoupling, the resulting supply droop can cause bit-error-rate degradation at 50 MBd. A 10 Β΅F bulk capacitor at the PCB power-entry point is recommended to absorb shared-rail transients from neighboring ICs. Do not use electrolytic bulk capacitance aloneβthe ESR must be low at the 50 MHz harmonics of the data edge.
Solder the locking tabs of the conductive housing to a chassis-ground pour that connects to earth ground at a single point. The RZ housing is internally metallized and bonded to the locking tabs; without a low-impedance chassis return, the EMI/RFI shielding is ineffective. Keep the POF fiber bend radius above 25 mm to avoid permanent attenuation damage; the AFBR-4521Z crimp connector provides strain relief if the fiber exits through a panel grommet. Avoid running the POF fiber parallel to AC power cables for more than 0.5 m to minimize micro-bend losses from external mechanical stress.
The AFBR-2529RZ output is TTL-compatible with a typical rise/fall time of 5 ns at 50 MBd. For cable runs longer than 50 mm on the PCB, add a 33 Ξ© series-termination resistor at the receiver output to dampen reflections on the controlled-impedance trace to the host MCU. If the downstream input is CMOS with VCC > 3.3 V (e.g. 5 V), insert a Schottky diode clamp or a level translator; do not rely on the AFBR-2529RZ's internal ESD diodes to survive continuous over-voltage. For the inverting output, account for an extra inverter stage in firmware or select AFBR-2526Z if the application expects active-HIGH logic.
Do not connect the AFBR-2529RZ to 5 V TTL without verifying the absolute-maximum VCC rating in the datasheetβthe 3.3 V version will be damaged. Do not mix POF and HCS fibers on the same link without re-validating the optical power budget; the link distance specifications differ by 4Γ between fiber types. Do not use the AFBR-2529RZ above 70 Β°C; the photodiode dark current doubles every 10 Β°C, which can cause false triggers. Do not omit the chassis-ground connection on the conductive housing; without it the EMI shielding is defeated and the part is indistinguishable from the non-conductive AFBR-2529Z variant.
Compliance Information
RoHS and lead-free compliance confirmed per Broadcom product page. Halogen-free status not explicitly listed in distributor snippets; flagged as unknown. Not AEC-Q100 qualified (industrial/consumer grade only).
