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Broadcom Limited AFBR-5705ALZ
- Part No.:
- AFBR-5705ALZ
- Manufacturer:
- Broadcom Limited
- Category:
- Fiber Optic Transceiver Modules
- Package:
- Datasheet:
-
AFBR-5705ALZ.pdf
- Description:
- TXRX OPTICAL SFP DMI IND LATCH
- Quantity:
- Payment:
- Shipping:
Inventory:1,771
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Product details
Overview
AFBR-5705ALZ from Broadcom (formerly Avago) is an industrial-grade, hot-pluggable SFP optical transceiver with Digital Diagnostic Monitoring Interface (DDMI), compliant with IEEE 802.3 1000BASE-SX and Fibre Channel FC-PI 100-M5-SN-I/100-M6-SN-I standards. It features an 850 nm VCSEL transmitter, LC-duplex connector, -40°C to +85°C operating range, and real-time monitoring of Tx power, Rx power, laser bias current, temperature, and supply voltage.
For engineers reviewing the AFBR-5705ALZ datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, SFF-8472-compliant DDMI implementation details, industrial-temperature SFP interoperability constraints, and precise electrical/optical specifications required for Gigabit Ethernet and Fibre Channel link design, BOM validation, and thermal-aware system integration.
Technical Context
The AFBR-5705ALZ implements a full SFF-8472-compliant Digital Diagnostic Monitoring Interface via I²C (A2h address), enabling host access to calibrated real-time parameters including transmitted optical power (–9.5 to –3 dBm), received optical power (–17 to 0 dBm), laser bias current, die temperature, and Vcc (3.135–3.465 V). Its transmitter uses an 850 nm VCSEL with eye safety Class 1 certification per FDA CDRH and IEC 60825-1.
It supports 1.25 GBd Gigabit Ethernet and 1.0625 GBd Fibre Channel over multimode fiber (50/125 µm up to 550 m; 62.5/125 µm up to 275 m), with AC-coupled differential TD±/RD± interfaces compliant with SFF-8074i. Pin sequencing follows MSA-defined 3-stage hot-plug engagement: housing ground → VeeT/VeeR → VCCT/VCCR → signal lines (TD±, RD±, TX_FAULT, LOS, etc.).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 1.25 GBd (Gigabit Ethernet) / 1.0625 GBd (Fibre Channel) - defines maximum link speed and compatible SERDES clocking |
| Operating Temperature | –40°C to +85°C - enables deployment in industrial control cabinets, outdoor base stations, and unconditioned network enclosures |
| Transmitter Wavelength | 830–860 nm (center 850 nm) - optimized for low dispersion in OM1/OM2 multimode fiber |
| Output Power Range | –9.5 dBm to –3 dBm - ensures sufficient link margin over 550 m on 50/125 µm fiber while maintaining Class 1 eye safety |
| Receiver Sensitivity | –21 dBm (min) - guarantees reliable detection at worst-case BER under stressed conditions per IEEE 802.3 |
| Supply Voltage | 3.135 V to 3.465 V - strict 3.3 V ±5% tolerance requires host board filtering per SFF-8074i (1 µH + 10 µF/0.1 µF) |
| Diagnostic Interface | I²C at A2h (bytes 0–255) - provides factory-calibrated, real-time access to Tx/Rx power, temperature, bias current, Vcc, and status flags |
Pinout & Package
AFBR-5705ALZ uses the standard SFP mechanical form factor (20-pin edge connector) with metal housing and LC-duplex optical interface. Package dimensions comply with SFF-8074i: 13.4 mm × 56.5 mm × 8.5 mm (W × L × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 17, 19, 20 | VeeT | Transmitter ground - 4 dedicated pins ensure low-impedance return path for high-speed TD± signals and laser driver |
| 9, 10, 11, 14 | VeeR | Receiver ground - 4 pins provide clean return for RD± and analog receiver circuitry |
| 15 | VccR | Receiver 3.3 V supply - must be within ±5% and filtered per MSA spec to avoid jitter degradation |
| 16 | VccT | Transmitter 3.3 V supply - independent from VccR; >0.5 V difference risks damage per Absolute Max Ratings |
| 18, 19 | TD+, TD– | Differential transmitter input - AC-coupled, internally terminated to 100 Ω; accepts 500–2400 mVpp swing |
| 12, 13 | RD+, RD– | Differential receiver output - AC-coupled, requires 100 Ω differential termination at SERDES; 370–2000 mVpp swing |
| 2 | TX_FAULT | Open-collector fault indicator - pulled high externally (4.7–10 kΩ); asserts high on laser fault or eye safety shutdown |
| 3 | TX_DISABLE | TTL/CMOS input - high disables laser; internal pull-up holds disabled until host pulls low; also controllable via I²C (A2h, byte 110, bit 6) |
| 4, 5 | MOD-DEF2, MOD-DEF1 | I²C data/clock lines - require external 4.7–10 kΩ pull-ups to VccT/R; enable serial ID (A0h) and DDMI (A2h) access |
| 6 | MOD-DEF0 | Module presence detect - grounded internally; host reads low to confirm physical insertion |
| 8 | LOS | Open-collector loss-of-signal - pulled high externally; asserts high when received optical power falls below –30 dBm (hysteresis = 3 dB) |
Key Features
| Feature | Design Value |
|---|---|
| Digital Diagnostic Monitoring (DDMI) | Real-time, calibrated readout of Tx power, Rx power, laser bias current, temperature, and Vcc via SFF-8472-compliant I²C interface (A2h) |
| Industrial Temperature Range | –40°C to +85°C case temperature operation - qualified per Telcordia GR-468-CORE for extended reliability in harsh environments |
| Eye Safety Certification | FDA CDRH Class 1 and IEC 60825-1 certified - integrated circuitry disables laser if output exceeds safe limits, asserting TX_FAULT |
| Hot-Pluggable SFP Compliance | 3-stage MSA pin sequencing (ground → power → signals) enables safe insertion/removal without host power-down |
| EMI-Optimized Shielding | Metal housing and internal layout minimize radiated emissions - supports high-port-density switches meeting FCC Class B and CISPR 22 |
Applications
| Enterprise Data Center Switching | Industrial Ethernet Backbone |
|---|---|
|
Use Scenario: 1000BASE-SX uplinks between top-of-rack (ToR) and aggregation switches in temperature-uncontrolled server rooms. IC Role / Device Role / Timing Role: Optical transceiver providing serialized 1.25 GBd data conversion and DDMI-based link health telemetry. Use Value: Enables predictive failure identification via trending of Tx bias current and Tx power drift, reducing unplanned downtime in Tier-3+ infrastructure. |
Use Scenario: Fiber-based communication between PLCs, HMIs, and remote I/O in manufacturing plants with ambient temperatures down to –40°C. IC Role / Device Role / Timing Role: Industrial-grade SFP transceiver delivering deterministic latency and ESD-hardened operation in electrically noisy factory floors. Use Value: Guaranteed operation across –40°C to +85°C eliminates need for local heating/cooling, simplifying enclosure design and lowering TCO. |
| Fibre Channel Storage Area Networks | Wireless Base Station Fronthaul |
|
Use Scenario: 1.0625 GBd Fibre Channel links connecting storage arrays to servers in enterprise SAN environments. IC Role / Device Role / Timing Role: FC-PI 100-M5-SN-I/100-M6-SN-I compliant optical interface with DDMI for real-time Rx power and temperature monitoring. Use Value: Allows host firmware to validate optical budget margins and trigger alerts before link degradation affects RAID rebuild performance. |
Use Scenario: CPRI/OBSAI-compliant fronthaul between BBU and remote radio units in LTE/5G macro cells using multimode fiber. IC Role / Device Role / Timing Role: Low-jitter (227 ps TJ @ 1.25 GBd), high-reliability SFP enabling deterministic timing transfer over ≤550 m fiber runs. Use Value: Meets CPRI Option 1/2 jitter budgets without external retiming, supporting <1.5 µs round-trip delay for TDD synchronization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SFP transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AFBR-5705LZ | Extended temperature range (–10°C to +85°C); same DDMI, optics, and pinout | Targeted for commercial data centers and enterprise routers where industrial temp is not required | Select AFBR-5705LZ for cost-sensitive deployments in climate-controlled environments with no thermal stress requirements |
| AFBR-5715Z | Same industrial temp and DDMI, but optimized exclusively for 1000BASE-SX (no Fibre Channel support); different calibration and compliance testing | Used only in pure Gigabit Ethernet networks; lacks FC-PI 100-M5/100-M6-SN-I qualification | Choose AFBR-5715Z when Fibre Channel interoperability is unnecessary and Ethernet-only validation streamlines qualification |
Compared with AFBR-5705ALZ, AFBR-5705LZ trades industrial temperature capability for lower unit cost in benign environments, while AFBR-5715Z removes Fibre Channel feature validation to reduce test overhead - both retain identical DDMI functionality and SFP mechanical compatibility but differ in regulatory scope and thermal envelope.
Availability
AFBR-5705ALZ is available at Aetrix Electronics and suitable for industrial automation, telecom fronthaul, and enterprise storage applications requiring stable component supply, long-term lifecycle support, and guaranteed industrial-temperature performance.
Supply support for AFBR-5705ALZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Broadcom Inc. (formerly Avago Technologies) is a global semiconductor leader specializing in wired infrastructure, optical networking, and enterprise connectivity solutions.
The AFBR-5705ALZ belongs to Broadcom's SFP transceiver product line, engineered for high-reliability, hot-pluggable optical interconnects in Gigabit Ethernet and Fibre Channel systems demanding industrial temperature operation and real-time diagnostics.
FAQ
What is the operating temperature range of the AFBR-5705ALZ?
The AFBR-5705ALZ is rated for industrial operation from –40°C to +85°C case temperature, validated per Telcordia GR-468-CORE. This range is confirmed in Table 4 of the datasheet and distinguishes it from extended-temperature variants like AFBR-5705LZ. The AFBR-5705ALZ maintains full SFF-8472 DDMI functionality and optical performance across this entire range without derating.
Does the AFBR-5705ALZ support Digital Diagnostic Monitoring (DDMI)?
Yes, the AFBR-5705ALZ fully supports SFF-8472-compliant Digital Diagnostic Monitoring Interface via its I²C bus (address A2h), providing real-time, factory-calibrated readings of transmitted optical power, received optical power, laser bias current, temperature, and supply voltage. This capability is intrinsic to the "5" suffix in the part number and is absent in AFBR-5701xZ variants.
What fiber types and distances does the AFBR-5705ALZ support?
The AFBR-5705ALZ supports 50/125 µm OM2 fiber up to 550 m for 1000BASE-SX and up to 500 m for Fibre Channel 100-M5-SN-I; on 62.5/125 µm OM1 fiber, it supports up to 275 m (Ethernet) and 300 m (Fibre Channel). These distances assume compliant launch conditions and are specified in Tables 6 and 7 of the datasheet.
How is eye safety implemented in the AFBR-5705ALZ?
The AFBR-5705ALZ incorporates hardware-based eye safety circuitry compliant with FDA CDRH Class 1 and IEC 60825-1. It continuously monitors optical output power and disables the VCSEL transmitter - while asserting TX_FAULT - if unsafe emission levels are detected. Certification documentation (CDRH #9720151-57, TÜV file R 72050685) is provided in the regulatory compliance section.
What are the key differences between AFBR-5705ALZ and AFBR-5705LZ?
The AFBR-5705ALZ and AFBR-5705LZ share identical DDMI functionality, optical specs, and pinout, but differ in temperature rating: AFBR-5705ALZ operates from –40°C to +85°C (industrial), while AFBR-5705LZ is rated for –10°C to +85°C (extended). This makes AFBR-5705ALZ suitable for uncontrolled environments such as outdoor cabinets or factory floors where sub-zero startup is required.
AFBR-5705ALZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Data Rate:
- 1.25Gbps
- Wavelength:
- 850nm
- Applications:
- Ethernet
- Voltage - Supply:
- 3.3V
- Connector Type:
- LC Duplex
- Mounting Type:
- Pluggable, SFP
AFBR-5705ALZ FAQ
1.How can I place an order for AFBR-5705ALZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AFBR-5705ALZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AFBR-5705ALZ reliable?
The price and inventory of AFBR-5705ALZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AFBR-5705ALZ is usually 5 days.
3.What payment methods are accepted for AFBR-5705ALZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AFBR-5705ALZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AFBR-5705ALZ?
AFBR-5705ALZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AFBR-5705ALZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AFBR-5705ALZ?
For technical support, including AFBR-5705ALZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AFBR-5705ALZ requirements.
6.How does Aetrix verify that AFBR-5705ALZ is sourced from the original manufacturer or authorized distributors?
All AFBR-5705ALZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AFBR-5705ALZ meets industry standards.
7.What is the process for return or replacement of AFBR-5705ALZ?
All AFBR-5705ALZ units undergo pre-shipment inspection (PSI). If there is an issue with AFBR-5705ALZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AFBR-5705ALZ part is unused and in its original packaging.
Return procedure for AFBR-5705ALZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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