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Broadcom Limited AFBR-79E4Z
- Part No.:
- AFBR-79E4Z
- Manufacturer:
- Broadcom Limited
- Category:
- Fiber Optic Transceiver Modules
- Package:
- Datasheet:
-
AFBR-79E4Z.pdf
- Description:
- TXRX QSFP 40GBE 4CH PLUGGABLE
- Quantity:
- Payment:
- Shipping:
Inventory:1,680
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Product details
Overview
AFBR-79E4Z from Avago Technologies is a 10 Gbps quad-channel pluggable parallel optics transceiver in QSFP form factor, utilizing 850 nm VCSEL arrays and PIN photodiodes for multimode fiber links. It delivers 4×10 Gbps aggregate bandwidth, supports hot-plug operation, and is rated for 40°C ambient with 197.4 FIT reliability per Telcordia SR-332.
For engineers reviewing the AFBR-79E4Z datasheet, pinout, applications, or equivalent options, key selection criteria include its QSFP mechanical compliance, 4-channel parallel optical I/O, 850 nm VCSEL-based transmission, Telcordia-qualified reliability at 40°C, and integration of monitor photodiodes and QSFP control IC.
Technical Context
This transceiver implements a fully integrated parallel optical interface with four independent 10 Gbps lanes using 850 nm vertical-cavity surface-emitting lasers (VCSELs) and matched PIN photodiodes. Electrical interface conforms to SFF-8436 QSFP specification with I²C management interface and digital diagnostics monitoring (DDM).
Thermal design targets case temperature ≤40°C for full-rated reliability (MTTF = 5.07×10⁶ hours); failure rate prediction follows Telcordia SR-332 Parts Count Method using component-level base FITs, quality factors, and environmental modifiers-no accelerated life test data is provided in the source.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 4 × 10 Gbps aggregate; enables 40G Ethernet or InfiniBand QDR interconnects without lane bonding overhead. |
| Optical Wavelength | 850 nm VCSEL array; optimized for 50/125 µm OM3/OM4 multimode fiber with ≤100 m reach. |
| Form Factor | QSFP (Quad Small Form-factor Pluggable); ensures mechanical and thermal compatibility with standard 40G switch/router line cards. |
| Reliability (FIT) | 197.4 FIT at 40°C case temperature; derived per Telcordia SR-332 Parts Count Method, indicating ~5.07 million hour MTTF. |
| Management Interface | I²C-based DDM (Digital Diagnostic Monitoring); provides real-time monitoring of temperature, supply voltage, TX bias, RX power per channel. |
| Operating Temperature | Case temperature range validated to 40°C for full FIT rating; higher temperatures increase FIT nonlinearly (e.g., 296.1 FIT at 50°C). |
Pinout & Package
Package: QSFP (SFF-8436-compliant 14×18 mm footprint, 38-pin edge connector). The AFBR-79E4Z-D uses a standard QSFP electrical interface with defined pin assignments for Vcc, ground, TX+/−, RX+/−, I²C clock/data, and module presence detection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1–10, 21–30 | Differential TX/RX lanes (4 pairs each) | Supports 4×10 Gbps NRZ signaling; requires controlled-impedance PCB routing (100 Ω differential) and AC coupling. |
| Pin 11–12, 20, 31 | Vcc (3.3 V), Ground | Power delivery with decoupling requirements per SFF-8436; total supply current ≤1.5 A typical. |
| Pin 13–14 | I²C Clock & Data (SDA/SCL) | Enables host-side DDM readout and configuration; pulled up externally per spec. |
| Pin 15–16 | Module Present & Reset | Hot-plug detection and module initialization control; asserted low during insertion. |
Key Features
| Feature | Design Value |
|---|---|
| Parallel Optical Architecture | Four independent 10 Gbps optical lanes eliminate serial-to-parallel conversion latency and simplify host SerDes design. |
| Integrated DDM Monitoring | Real-time per-lane RX optical power, TX bias current, and temperature enable proactive link health assessment and fault isolation. |
| VCSEL + PIN Photodiode Pairing | Matched 850 nm emitter/detector arrays ensure consistent modal power distribution and minimize differential mode delay on MMF. |
| Telcordia SR-332 Compliance | Quantified FIT rate (197.4 @ 40°C) supports carrier-grade system availability planning and long-life infrastructure deployment. |
Applications
| Data Center Interconnect | High-Performance Computing |
|---|---|
Use Scenario: 40G Ethernet uplinks between top-of-rack and spine switches in leaf-spine fabric. IC Role / Device Role / Timing Role: Pluggable optical transceiver providing parallel 4×10 Gbps physical layer interface compliant with IEEE 802.3ba. Use Value: Enables deterministic 40G throughput with <1 µs latency per hop and hot-swap maintenance without fabric interruption. | Use Scenario: InfiniBand QDR interconnect between compute nodes and I/O gateways in HPC clusters. IC Role / Device Role / Timing Role: QSFP-form-factor parallel optical transceiver implementing 4×10 Gbps InfiniBand physical layer per Vol. 1 Ch. 12. Use Value: Delivers sub-microsecond round-trip latency and sustained bidirectional bandwidth essential for MPI-based distributed computing. |
| Enterprise Storage Networking | Cloud Infrastructure Aggregation |
Use Scenario: Fibre Channel over Ethernet (FCoE) links connecting storage arrays to converged network adapters. IC Role / Device Role / Timing Role: Optical PHY transceiver supporting FCoE at 40G line rate with lossless Ethernet flow control compatibility. Use Value: Maintains FC-class determinism and low jitter (<0.3 UI) required for storage traffic coexistence with LAN traffic. | Use Scenario: Aggregation of 10G server NICs into 40G uplinks at the aggregation layer in hyperscale cloud racks. IC Role / Device Role / Timing Role: Parallel optics transceiver enabling cost-effective bandwidth scaling without requiring 100G infrastructure upgrades. Use Value: Reduces port count and switch ASIC complexity while delivering linear 4× bandwidth scaling per QSFP slot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar parallel optical transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AFBR-79EQZ | Same QSFP form factor and 4×10 Gbps architecture but uses different VCSEL driver IC; FIT not published in public documentation. | Targeted for extended temperature range (−5°C to 70°C case) vs. AFBR-79E4Z's 40°C-rated reliability profile. | Select AFBR-79EQZ when operating ambient exceeds 40°C case temperature and Telcordia FIT validation is not required. |
| FTLX8571D3BCL | Fiberstore-branded QSFP+ 40G SR4 transceiver; identical 850 nm VCSEL/PIN architecture and OM3/OM4 reach, but third-party qualification and no Avago reliability report. | Used in cost-sensitive enterprise deployments where full Telcordia FIT traceability is not mandated by system-level standards. | Choose FTLX8571D3BCL only after verifying interoperability with host platform and accepting absence of Avago's documented FIT model. |
Compared with AFBR-79EQZ and FTLX8571D3BCL, the AFBR-79E4Z provides uniquely documented Telcordia SR-332 FIT prediction at 40°C-critical for telecom and carrier infrastructure where reliability modeling drives MTBF commitments and spares provisioning.
Availability
AFBR-79E4Z is available at Aetrix Electronics and suitable for data center interconnect, high-performance computing, and enterprise storage networking requiring stable component supply, long-term lifecycle support, and carrier-grade reliability validation.
Supply support for AFBR-79E4Z 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
Avago Technologies (now part of Broadcom) is a global leader in semiconductor solutions for optical, wireless, and wired communications, specializing in high-speed connectivity components.
The AFBR-79E4Z belongs to Avago's QSFP parallel optics transceiver product line, engineered specifically for 40G short-reach multimode fiber applications in carrier and enterprise infrastructure where reliability, density, and standards compliance are critical.
FAQ
What is the maximum supported fiber distance for AFBR-79E4Z?
The AFBR-79E4Z supports up to 100 meters over OM3 multimode fiber and 150 meters over OM4 multimode fiber, consistent with IEEE 802.3ba 40GBASE-SR4 specifications. This distance assumes compliant 850 nm VCSEL launch conditions and proper fiber termination-actual reach may decrease with excessive modal dispersion or connector loss.
Does AFBR-79E4Z support Digital Diagnostic Monitoring (DDM)?
Yes, AFBR-79E4Z supports full DDM per SFF-8472 via its I²C interface. It reports real-time parameters including module temperature, 3.3 V supply voltage, per-channel TX bias current, and per-channel received optical power-enabling host systems to monitor link health and predict failures before service impact.
What is the meaning of "FIT = 197.4" for AFBR-79E4Z?
The 197.4 FIT value for AFBR-79E4Z means an expected 197.4 failures per billion device-hours of operation at 40°C case temperature, calculated per Telcordia SR-332 Parts Count Method. This corresponds to a mean time to failure (MTTF) of approximately 5.07 million hours-used for system-level availability modeling in carrier-grade equipment.
Is AFBR-79E4Z compatible with standard QSFP sockets?
Yes, AFBR-79E4Z complies with SFF-8436 mechanical and electrical specifications for QSFP modules. Its 38-pin edge connector, 14×18 mm footprint, and hot-plug detection circuitry ensure interoperability with any SFF-8436-compliant host system, including Cisco, Juniper, and Arista 40G line cards.
What type of fiber connector does AFBR-79E4Z use?
AFBR-79E4Z uses an integrated 12-fiber MPO-12 (female) optical connector configured for 40GBASE-SR4 parallel optics, with fibers 1–4 assigned to TX, 9–12 to RX, and 5–8 unused-matching the IEEE 802.3ba polarity Type B pinout required for standard multimode trunk cables.
AFBR-79E4Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Data Rate:
- 10.3125Gbps
- Wavelength:
- 850nm
- Applications:
- Telecom/Datacom Systems
- Voltage - Supply:
- 3.3V
- Connector Type:
- MTP® (MPO)
- Mounting Type:
- Pluggable, QSFP+
AFBR-79E4Z FAQ
1.How can I place an order for AFBR-79E4Z through Aetrix?
Please submit a Request for Quotation (RFQ) for AFBR-79E4Z 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-79E4Z reliable?
The price and inventory of AFBR-79E4Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AFBR-79E4Z is usually 5 days.
3.What payment methods are accepted for AFBR-79E4Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AFBR-79E4Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AFBR-79E4Z?
AFBR-79E4Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AFBR-79E4Z 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-79E4Z?
For technical support, including AFBR-79E4Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AFBR-79E4Z requirements.
6.How does Aetrix verify that AFBR-79E4Z is sourced from the original manufacturer or authorized distributors?
All AFBR-79E4Z 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-79E4Z meets industry standards.
7.What is the process for return or replacement of AFBR-79E4Z?
All AFBR-79E4Z units undergo pre-shipment inspection (PSI). If there is an issue with AFBR-79E4Z, 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-79E4Z part is unused and in its original packaging.
Return procedure for AFBR-79E4Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AFBR-79E4Z Tags
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AFBR-5972EZ
Broadcom Limited
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AFBR-5972BZ
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FTLF8519P3BTL
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AFBR-5803ATZ
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AFBR-5803ATQZ
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FTLX8574D3BCV
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