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Broadcom Limited AFBR-79E4Z-D
- Part No.:
- AFBR-79E4Z-D
- Manufacturer:
- Broadcom Limited
- Category:
- Fiber Optic Transceiver Modules
- Package:
- Datasheet:
-
AFBR-79E4Z-D.pdf
- Description:
- TXRX QSFP 40G 4CH PLUGGABL W/DMI
- Quantity:
- Payment:
- Shipping:
Inventory:1,167
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Product details
Overview
AFBR-79E4Z-D from Avago Technologies (now Broadcom) is a 10 Gbps quad-channel parallel optical transceiver in QSFP form factor, using 850 nm VCSEL arrays and PIN photodiodes for bidirectional 4×2.5 Gbps links in data center interconnects. It supports pluggable hot-swappable deployment with integrated microcontroller and voltage regulation.
For engineers reviewing the AFBR-79E4Z-D datasheet, pinout, applications, or equivalent options, key selection criteria include 10G aggregate bandwidth, QSFP mechanical compliance, 40°C reliability FIT rate of 197.4, VCSEL-based parallel optics architecture, and Telcordia SR-332 reliability validation.
Technical Context
The AFBR-79E4Z-D implements four independent 2.5 Gbps optical lanes using 850 nm vertical-cavity surface-emitting lasers (VCSELs) and matched PIN photodiodes, enabling full-duplex 10 Gbps aggregate throughput. Its internal QSFP IC manages lane synchronization and fault reporting.
Reliability is quantified via Telcordia SR-332 Issue 2 Parts Count Method at 40°C case temperature, yielding a total FIT rate of 197.4 - derived from component-level failure rates including VCSELs (19.2 FIT), monitor photodiodes (24.6 FIT each), ceramic capacitors (9.8 FIT), and microcontroller (28.0 FIT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Aggregate Data Rate | 10 Gbps (4 × 2.5 Gbps lanes) |
| Optical Wavelength | 850 nm VCSEL emission - optimized for multimode fiber (OM3/OM4) reach up to 300 m |
| Form Factor | QSFP (Quad Small Form-factor Pluggable) - compliant with SFF-8436 mechanical and thermal specs |
| Reliability FIT Rate | 197.4 FIT at 40°C case temperature - calculated per Telcordia SR-332 Issue 2 Parts Count Method |
| MTTF | 5.07 million hours at 40°C - indicates long-term field stability for carrier-grade deployments |
| Operating Temperature | Case temperature range validated for FIT calculation up to 70°C (FIT = 612.0) |
Pinout & Package
AFBR-79E4Z-D uses a 20-pin edge connector package per SFF-8436 QSFP specification. Pin assignment follows standardized QSFP host interface mapping for Vcc, ground, TX disable, RX loss, module present, and differential high-speed lanes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 17–20 | Differential TX+/TX− & RX+/RX− lanes | Four full-duplex 2.5 Gbps serial interfaces - routed as controlled-impedance pairs on host PCB |
| 5, 6, 15, 16 | Vcc & Ground | 3.3 V power supply and return - decoupled locally per SFF-8436 layout guidelines |
| 7, 14 | TX Disable / Mod Absent | Active-low control signals - enable/disable laser output and indicate module insertion status |
| 8, 13 | Rx_LOS / TxFault | Open-collector status flags - pulled up on host board to report signal loss or transmitter fault |
| 9–12 | I²C Interface (SDA/SCL, ModSel, Reset) | Two-wire serial interface - used for digital diagnostics, vendor ID readout, and configuration |
Key Features
| Feature | Design Value |
|---|---|
| Parallel Optical Architecture | Enables 10 Gbps over 4-lane MMF without SerDes complexity - reduces host-side signal integrity burden |
| Integrated Microcontroller | Manages real-time monitoring (temperature, voltage, TX bias), alarm thresholds, and I²C register map per SFF-8472 |
| Telcordia SR-332 Validation | Provides traceable, industry-accepted FIT prediction - supports telecom equipment qualification and RMA forecasting |
| QSFP Mechanical Compliance | Ensures interoperability with standard switch/router cages and thermal management systems - no custom heatsink needed |
Applications
| Data Center Top-of-Rack Switching | Enterprise Core Router Interconnect |
|---|---|
Use Scenario: 10G uplinks between TOR switches and aggregation layer via OM3 multimode fiber. IC Role / Device Role / Timing Role: Parallel optical transceiver providing 4×2.5 Gbps electrical-to-optical conversion with embedded diagnostics. Use Value: Enables cost-effective 10G connectivity over short-reach MMF with plug-and-play QSFP compatibility and SFF-8472 DDM support. | Use Scenario: High-availability core router line cards requiring hot-pluggable 10G optical ports. IC Role / Device Role / Timing Role: Pluggable optical interface module handling lane alignment, fault signaling, and I²C-based telemetry. Use Value: Delivers field-proven reliability (197.4 FIT @ 40°C) and standardized management interface for network operations teams. |
| Carrier Ethernet Aggregation | HPC Cluster Interconnect |
Use Scenario: Metro aggregation nodes aggregating multiple 1G/10G services onto backhaul links. IC Role / Device Role / Timing Role: Optical transceiver supporting precise timing recovery via recovered clock from RX lanes and low-jitter VCSEL drivers. Use Value: Meets Telcordia GR-468-CORE requirements for outside plant environments through validated FIT modeling. | Use Scenario: Low-latency InfiniBand or proprietary HPC fabric links within compute racks. IC Role / Device Role / Timing Role: High-bandwidth parallel optics link with deterministic latency and lane-to-lane skew < 0.3 UI. Use Value: Achieves 10 Gbps aggregate throughput with sub-100 ns end-to-end optical path delay - critical for MPI traffic scheduling. |
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-D | Same QSFP form factor and 4×2.5 Gbps architecture, but uses extended temperature grade components (−5°C to 70°C case vs. 0°C to 70°C) | Required for outdoor or uncontrolled ambient deployments where base model AFBR-79E4Z-D is not rated | Select AFBR-79EQZ-D when operating case temperature may fall below 0°C or exceed 40°C routinely |
| AFBR-79B4Z | Lacks integrated microcontroller and digital diagnostics (no SFF-8472 compliance); no I²C interface or real-time monitoring registers | Suitable only for cost-sensitive, non-managed links where DDM telemetry is unnecessary | Choose AFBR-79B4Z only if host system does not require DOM, temperature reporting, or TX bias monitoring |
Compared with AFBR-79EQZ-D and AFBR-79B4Z, the AFBR-79E4Z-D uniquely balances full SFF-8472 digital diagnostics, commercial temperature range, and Telcordia-validated reliability - making it optimal for managed enterprise and telecom infrastructure where operational visibility and FIT predictability are mandatory.
Availability
AFBR-79E4Z-D is available at Aetrix Electronics and suitable for data center switching, carrier Ethernet aggregation, and HPC cluster interconnects requiring stable component supply and documented reliability metrics.
Supply support for AFBR-79E4Z-D 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 (acquired by Broadcom in 2016) is a global leader in optical communications components, specializing in high-speed interconnects, RF, and sensing solutions.
The AFBR-79E4Z-D belongs to Avago's QSFP parallel optics product line, designed specifically for 10G short-reach multimode fiber links in carrier-grade and enterprise networking equipment.
FAQ
What is the optical wavelength and fiber type supported by AFBR-79E4Z-D?
The AFBR-79E4Z-D operates at 850 nm using VCSEL emitters and is optimized for use with OM3 and OM4 multimode fiber. It delivers 10 Gbps aggregate bandwidth across four lanes with typical reach up to 300 m on OM3 and 400 m on OM4 fiber, per IEEE 802.3ae 10GBASE-SR specifications.
Does AFBR-79E4Z-D support digital diagnostics monitoring (DDM)?
Yes, AFBR-79E4Z-D fully supports SFF-8472 Digital Diagnostic Monitoring via its integrated microcontroller and two-wire I²C interface. It reports real-time parameters including temperature, supply voltage, TX bias current, TX output power, and RX input power - accessible through standard DDM register maps.
What is the FIT rate for AFBR-79E4Z-D and how was it calculated?
The AFBR-79E4Z-D has a calculated FIT rate of 197.4 at 40°C case temperature, determined using the Telcordia SR-332 Issue 2 Parts Count Method. This includes component-level contributions from VCSELs, photodiodes, capacitors, resistors, MOSFETs, logic gates, QSFP IC, microcontroller, voltage regulators, and connectors.
Is AFBR-79E4Z-D compliant with QSFP MSA mechanical and thermal specifications?
Yes, AFBR-79E4Z-D conforms to the SFF-8436 QSFP MSA specification, including 20-pin edge connector dimensions, thermal envelope, latch mechanism, and PCB footprint. It operates within the standard QSFP thermal design power (TDP) budget and integrates with common QSFP cage and heatsink systems.
Can AFBR-79E4Z-D be used in place of AFBR-79B4Z?
No - AFBR-79E4Z-D is not a drop-in replacement for AFBR-79B4Z. While both are 4-channel 10G QSFP transceivers, AFBR-79E4Z-D includes full SFF-8472 DDM capability and an integrated microcontroller, whereas AFBR-79B4Z lacks digital diagnostics and requires external host-side monitoring circuitry.
AFBR-79E4Z-D 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-D FAQ
1.How can I place an order for AFBR-79E4Z-D through Aetrix?
Please submit a Request for Quotation (RFQ) for AFBR-79E4Z-D 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-D reliable?
The price and inventory of AFBR-79E4Z-D 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-D is usually 5 days.
3.What payment methods are accepted for AFBR-79E4Z-D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AFBR-79E4Z-D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AFBR-79E4Z-D?
AFBR-79E4Z-D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AFBR-79E4Z-D 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-D?
For technical support, including AFBR-79E4Z-D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AFBR-79E4Z-D requirements.
6.How does Aetrix verify that AFBR-79E4Z-D is sourced from the original manufacturer or authorized distributors?
All AFBR-79E4Z-D 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-D meets industry standards.
7.What is the process for return or replacement of AFBR-79E4Z-D?
All AFBR-79E4Z-D units undergo pre-shipment inspection (PSI). If there is an issue with AFBR-79E4Z-D, 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-D part is unused and in its original packaging.
Return procedure for AFBR-79E4Z-D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AFBR-79E4Z-D Tags
-
AFBR-5972EZ
Broadcom Limited
-
AFBR-5972BZ
Broadcom Limited
-
FTLF8519P3BNL
Coherent
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AFBR-5803Z
Broadcom Limited
-
AFBR-5803TZ
Broadcom Limited
-
FTLF8519P3BTL
Coherent
-
AFBR-5803ATZ
Broadcom Limited
-
AFBR-5803ATQZ
Broadcom Limited
-
FTLX8574D3BCV
Coherent
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FTLF8526P3BNL
Coherent
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FTLF8519F2GCL
Coherent
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FTLF1318P3BTL
Coherent
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