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Broadcom Limited AFBR-5701LZ
- Part No.:
- AFBR-5701LZ
- Manufacturer:
- Broadcom Limited
- Category:
- Fiber Optic Transceiver Modules
- Package:
- Datasheet:
-
AFBR-5701LZ.pdf
- Description:
- TXRX OPTICAL SFP STD LATCH
- Quantity:
- Payment:
- Shipping:
Inventory:3,689
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Product details
Overview
AFBR-5701LZ from Broadcom (formerly Avago) is a hot-pluggable, ROHS-6-compliant SFP optical transceiver for Gigabit Ethernet (1.25 GBd) and Fibre Channel (1.0625 GBd) applications. It features an 850 nm VCSEL transmitter, LC-duplex fiber interface, +3.3 V DC supply, and extended temperature operation from –10°C to +85°C. Designed for enterprise switching and storage interconnects, it delivers –9.5 dBm to –3 dBm average output power over 50/125 µm multimode fiber up to 550 m.
For engineers reviewing the AFBR-5701LZ datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed application use cases, and two rigorously cross-checked alternative parts - all aligned with SFF-8074i and IEEE 802.3 compliance requirements.
Technical Context
The AFBR-5701LZ implements a fully integrated SFP transceiver architecture with separate TOSA (850 nm VCSEL) and ROSA (PIN photodiode + transimpedance preamp) sections. Its electrical interface conforms to SFF-8074i, supporting LVPECL/CML differential signaling with internal AC coupling and 100 Ω termination - eliminating host-board coupling capacitors and bias resistors.
It operates without Digital Diagnostic Monitoring (DMI), distinguishing it from the AFBR-5705Z family. Control logic includes hardware TX_DISABLE (pin 3, TTL/CMOS-compatible, internally pulled up), TX_FAULT (open-collector, requires 4.7–10 kΩ host pull-up), and RX_LOS (open-collector, same pull-up requirement), all sequenced per SFP MSA 3-stage hot-plug engagement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 1.25 GBd (Gigabit Ethernet) / 1.0625 GBd (Fibre Channel) - supports interoperability with standard 1000BASE-SX and FC-PI 100-M5-SN-I/M6-SN-I links |
| Transmitter Wavelength | 830–860 nm center (typ. 850 nm) - optimized for low dispersion in 50/125 µm and 62.5/125 µm multimode fiber |
| Output Power | –9.5 dBm to –3 dBm (avg.) - ensures link budget margin for ≤550 m on 50/125 µm OM2 fiber per IEEE 802.3 |
| Receiver Sensitivity | –21 dBm (min.) - guarantees error-free operation at worst-case BER < 10⁻¹² under stressed conditions |
| Supply Voltage | +3.3 V ±5% (VccT/VccR) - requires MSA-compliant 1 µH/10 µF + 0.1 µF filtering on host board per Figure 4 |
| Operating Temp | –10°C to +85°C (extended) - validated per Telcordia GR-468-CORE for carrier-grade reliability |
| Power Dissipation | 530–765 mW - dictates thermal management in high-port-density SFP cages |
Pinout & Package
Package: SFP (Small Form-factor Pluggable), 20-pin edge connector, metal housing with LC-duplex optical interface, RoHS-6 compliant, UL 94V-0 flame-retardant plastic body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 17, 20, 9, 10, 11, 14 | VeeT / VeeR | Transmitter/receiver ground planes - 7 dedicated ground pins ensure signal integrity and EMI suppression in high-speed differential paths |
| 2 | TX_FAULT | Open-collector laser fault indicator - host must add 4.7–10 kΩ pull-up; low = normal, high = catastrophic failure (e.g., eye-safety trip) |
| 3 | TX_DISABLE | TTL/CMOS input - high or open disables VCSEL; internal 4.7–10 kΩ pull-up ensures safe default-off state |
| 4, 5 | MOD-DEF2 / MOD-DEF1 | I²C data/clock lines - enable host read of EEPROM serial ID (A0h address); require 4.7–10 kΩ host pull-ups |
| 6 | MOD-DEF0 | Module presence detect - grounded internally; host reads low to confirm physical insertion |
| 8 | LOS | Open-collector loss-of-signal flag - asserts high when received optical power falls below –30 dBm (hysteresis = 3 dB) |
| 12, 13 | RD− / RD+ | Differential receiver outputs - AC-coupled, 100 Ω internally terminated; deliver 370–2000 mVpp swing to SERDES |
| 15 | VccR | +3.3 V receiver supply - must be within ±5% and differ from VccT by ≤0.5 V to prevent damage |
| 16 | VccT | +3.3 V transmitter supply - powers VCSEL driver; shares noise rejection filter topology with VccR |
| 18, 19 | TD+ / TD− | Differential transmitter inputs - accept 500–2400 mVpp; AC-coupled and 100 Ω terminated inside module |
Key Features
| Feature | Design Value |
|---|---|
| Hot-pluggable SFP form factor | Enables live insertion/removal in powered systems - reduces network downtime during upgrades or repairs |
| Class 1 eye safety certified | Complies with FDA CDRH & IEC 60825-1 - eliminates need for external laser safety interlocks in end equipment |
| Industry-leading EMI performance | Metal housing + shielded design meets FCC Class B, CISPR 22, VCCI Class 1 - simplifies host board EMC validation |
| Standard latch mechanism | Non-bail mechanical retention - compatible with legacy SFP cages requiring low-profile latching |
| VCSEL-based 850 nm optics | Lower power consumption and higher reliability vs. FP/DFB lasers - ideal for cost-sensitive, high-volume datacom links |
Applications
| Enterprise Switching | Storage Area Networking |
|---|---|
Use Scenario: 1U top-of-rack switch with 48× SFP ports connecting servers in a virtualized data center. IC Role / Device Role / Timing Role: Optical link layer transceiver converting SERDES electrical signals to 850 nm optical pulses for multimode fiber trunking. Use Value: Enables 1.25 Gb/s full-duplex connectivity over ≤550 m using low-cost OM2 fiber - reducing cabling CAPEX vs. single-mode solutions. | Use Scenario: Fibre Channel fabric switch aggregating storage traffic between disk arrays and host bus adapters. IC Role / Device Role / Timing Role: Physical-layer interface for ANSI X3.230 (FC-PI) 1.0625 GBd links with deterministic jitter < 205 ps (TP3–TP4). Use Value: Meets FC-PI 100-M5-SN-I spec for 50/125 µm fiber - ensuring interoperability with legacy FC infrastructure and predictable bit-error performance. |
| Broadband Aggregation | Wireless Infrastructure Backhaul |
Use Scenario: Carrier-class DSLAM or OLT aggregating subscriber traffic onto metro Ethernet rings. IC Role / Device Role / Timing Role: Pluggable optical PHY for IEEE 802.3 1000BASE-SX uplinks to aggregation routers. Use Value: Extended temperature rating (–10°C to +85°C) supports deployment in uncontrolled telco cabinets - eliminating need for active cooling. | Use Scenario: Small-cell base station backhauling fronthaul data between radio units and centralized BBU. IC Role / Device Role / Timing Role: Low-power, high-reliability optical interface bridging CPRI/JESD204B-equivalent links over short multimode runs. Use Value: 765 mW max power dissipation allows dense packing in fanless outdoor enclosures - meeting IP65 thermal constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SFP transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AFBR-5710LZ | Same optical specs (850 nm, 1.25 GBd, –9.5 to –3 dBm), identical extended-temp SFP package, but manufactured later in Avago's product lifecycle with updated calibration | No functional difference in Gigabit Ethernet or Fibre Channel use - fully interoperable in existing designs | Select AFBR-5710LZ for new designs requiring long-term availability assurance and latest manufacturing revision control |
| AFCT-5701LZ | 1.25 GBd Ethernet / 1.0625 GBd Fibre Channel support retained, but uses 1310 nm FP laser for 1000BASE-LX - enables ≥5 km reach on single-mode fiber | Replaces multimode-only AFBR-5701LZ in campus backbone or MAN links where distance exceeds 550 m | Choose AFCT-5701LZ only when single-mode fiber plant exists or future scalability to >2 km is required |
Compared with AFBR-5701LZ, AFBR-5710LZ offers identical performance with enhanced production continuity, while AFCT-5701LZ trades multimode reach for single-mode distance - making the former a drop-in refresh and the latter a topology-dependent upgrade path.
Availability
AFBR-5701LZ is available at Aetrix Electronics and suitable for enterprise switching, storage area networking, and broadband aggregation requiring stable component supply across multi-year production cycles.
Supply support for AFBR-5701LZ 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. (acquired Avago Technologies in 2016) is a global semiconductor leader specializing in wired infrastructure, wireless communications, and enterprise storage silicon.
The AFBR-5701LZ belongs to Avago's legacy SFP transceiver product line, engineered specifically for cost-optimized, high-reliability Gigabit Ethernet and Fibre Channel interconnects in carrier and enterprise networking equipment.
FAQ
Does AFBR-5701LZ support Digital Diagnostic Monitoring (DMI)?
No, AFBR-5701LZ does not support DMI. It belongs to the AFBR-5701Z family, explicitly defined in the datasheet as "without DMI." Real-time monitoring of temperature, Tx bias current, or optical power is unavailable. For DMI capability, select AFBR-5705LZ or AFBR-5715LZ. The AFBR-5701LZ retains full SFP MSA compliance and basic control signals (TX_DISABLE, TX_FAULT, LOS) via its 20-pin interface.
What fiber types and distances does AFBR-5701LZ support?
AFBR-5701LZ supports 50/125 µm OM2 multimode fiber up to 550 m and 62.5/125 µm OM1 fiber up to 275 m for Gigabit Ethernet (1.25 GBd), and up to 500 m / 300 m respectively for Fibre Channel (1.0625 GBd). These distances assume compliant launch conditions and meet IEEE 802.3 and FC-PI 100-M5-SN-I specifications. It is not qualified for single-mode fiber operation.
Is AFBR-5701LZ compatible with SFP slots that require SFF-8472 compliance?
No, AFBR-5701LZ is not SFF-8472 compliant because it lacks DMI functionality. It complies only with SFF-8074i (base SFP MSA). Host systems enforcing SFF-8472 will likely reject AFBR-5701LZ during initialization due to missing diagnostic memory pages at I²C address A2h. Use AFBR-5705LZ if SFF-8472 handshake is mandatory.
What is the meaning of "L" in AFBR-5701LZ?
The "L" in AFBR-5701LZ denotes the standard latch (non-bail) mechanical configuration, as confirmed in the "Part Number Options" table. It distinguishes this variant from AFBR-5701PZ (bail latch) and AFBR-5701ALZ (industrial temp + standard latch). All "LZ" variants share identical optical, electrical, and thermal specs - only mechanical retention differs.
Can AFBR-5701LZ be used in industrial temperature environments (–40°C to +85°C)?
No, AFBR-5701LZ is rated for extended temperature (–10°C to +85°C) only. For industrial operation down to –40°C, the correct part is AFBR-5701ALZ (same "no DMI" feature set, but qualified per Telcordia GR-468-CORE for wider range). Using AFBR-5701LZ below –10°C may result in startup failure, increased bit error rate, or premature wear.
AFBR-5701LZ 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-5701LZ FAQ
1.How can I place an order for AFBR-5701LZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AFBR-5701LZ 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-5701LZ reliable?
The price and inventory of AFBR-5701LZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AFBR-5701LZ is usually 5 days.
3.What payment methods are accepted for AFBR-5701LZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AFBR-5701LZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AFBR-5701LZ?
AFBR-5701LZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AFBR-5701LZ 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-5701LZ?
For technical support, including AFBR-5701LZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AFBR-5701LZ requirements.
6.How does Aetrix verify that AFBR-5701LZ is sourced from the original manufacturer or authorized distributors?
All AFBR-5701LZ 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-5701LZ meets industry standards.
7.What is the process for return or replacement of AFBR-5701LZ?
All AFBR-5701LZ units undergo pre-shipment inspection (PSI). If there is an issue with AFBR-5701LZ, 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-5701LZ part is unused and in its original packaging.
Return procedure for AFBR-5701LZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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