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Broadcom Limited AFBR-89BDDZ
- Part No.:
- AFBR-89BDDZ
- Manufacturer:
- Broadcom Limited
- Category:
- Fiber Optic Transceiver Modules
- Package:
- Datasheet:
-
AFBR-89BDDZ.pdf
- Description:
- QSFP28 2X50G PAM-4 BIDI
- Quantity:
- Payment:
- Shipping:
Inventory:1,673
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Product details
Overview
AFBR-89BDDZ from Broadcom is a QSFP28 pluggable fiber-optic transceiver module supporting 100 Gigabit Ethernet over multimode fiber using VCSEL-based PAM4 BiDi 2×50G signaling with duplex LC connector, operating at -4.4 dBm to +4.0 dBm average launch power per lane.
For engineers reviewing the AFBR-89BDDZ datasheet, pinout, applications, or equivalent options, this module is selected for high-density data center interconnects requiring IEEE 802.3cd-compliant 100GBASE-SR2 optical links with low-power, hot-pluggable form factor and MMF reach up to 100 m.
Technical Context
The AFBR-89BDDZ implements a 2-lane PAM4 bidirectional (BiDi) architecture, enabling full-duplex 50 Gbps per lane over a single MMF strand using wavelength division multiplexing-no separate transmit/receive fibers required. It complies with QSFP28 MSA mechanical and electrical specifications and supports I²C-based digital diagnostics monitoring (DOM).
Optical interface uses 850 nm VCSEL arrays with integrated driver and limiting amplifier; electrical interface conforms to CAUI-4 (4×25G NRZ or 2×50G PAM4) host-side signaling. Thermal management meets SFF-8636 Class B operating temperature range (0 °C to 70 °C case).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 2 × 50 Gbps PAM4 per lane, enabling 100 GbE aggregate bandwidth |
| Optical Interface | Duplex LC connector, 850 nm VCSEL-based BiDi over OM3/OM4 MMF |
| Average Launch Power | -4.4 dBm to +4.0 dBm per lane - ensures link margin for ≤100 m OM4 reach |
| Form Factor | QSFP28 MSA-compliant - enables hot-plug compatibility with standard switches/routers |
| Diagnostics | I²C-based DOM support for real-time monitoring of temperature, voltage, TX bias, RX power |
| Operating Temp | 0 °C to +70 °C case temperature - suitable for enterprise and cloud data center environments |
Pinout & Package
Package: QSFP28 compliant 14-channel edge connector (2×7), 38.5 mm × 18.35 mm × 8.5 mm footprint, RoHS-compliant, lead-free solder compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1–14 (Top Row) | Ground / VccT / TX Bias / TX Disable / ModSelL / ResetL / LPMode / IntL / SCL / SDA / RS0 / RS1 / LOS / TX Fault | Standard QSFP28 control and power pins per SFF-8636 - enables host-side configuration, fault reporting, and thermal management |
| Pin 15–28 (Bottom Row) | VccR / Ground / RX Out+ / RX Out− / Ground / TX In+ / TX In− / Ground / Ground / Ground / Ground / Ground / Ground / Ground | Differential CAUI-4 electrical interface - supports 2-lane PAM4 signaling with AC-coupled differential pairs |
Key Features
| Feature | Design Value |
|---|---|
| VCSEL-based BiDi PAM4 | Reduces fiber count by 50% vs. SR4 - enables 100G over 2-fiber duplex MMF infrastructure |
| QSFP28 MSA compliance | Ensures interoperability with Cisco, Arista, Juniper, and NVIDIA switch platforms without custom firmware |
| Digital Diagnostics Monitoring | Real-time visibility into optical performance for predictive maintenance and link troubleshooting |
| Low Power Consumption | Typical 3.5 W max - meets data center thermal and power density constraints |
| OM4 Reach Support | Validated for 100 m operation - aligns with top-of-rack to end-of-row cabling distances |
Applications
| Data Center Top-of-Rack Interconnect | Enterprise Campus Core Switching |
|---|---|
Use Scenario: Connecting TOR switches to aggregation layer via structured MMF cabling. IC Role / Device Role / Timing Role: Pluggable optical transceiver providing 100GBASE-SR2 physical layer interface. Use Value: Enables cost-effective 100G migration using existing duplex LC patch panels and OM4 backbone. | Use Scenario: High-bandwidth uplinks between core and distribution switches in multi-building campus networks. IC Role / Device Role / Timing Role: Hot-pluggable QSFP28 optical module delivering deterministic latency and BER <1e-12. Use Value: Eliminates need for parallel fiber ribbons while maintaining full-duplex 100G throughput over legacy duplex infrastructure. |
| Cloud Provider Spine-Leaf Fabric | HPC Cluster Node Interconnect |
Use Scenario: Leaf-to-spine links in Clos fabric requiring high port density and thermal efficiency. IC Role / Device Role / Timing Role: BiDi PAM4 transceiver enabling 100G per port with minimal front-panel footprint and airflow obstruction. Use Value: Reduces fiber management complexity and improves rack-unit utilization compared to SR4 solutions. | Use Scenario: Low-latency interconnect between GPU-accelerated compute nodes using MMF-based optical backplane extensions. IC Role / Device Role / Timing Role: Optical PHY layer device supporting IEEE 802.3cd 100GBASE-SR2 with tight jitter tolerance. Use Value: Delivers sub-200 ns round-trip latency with PAM4 equalization optimized for short-reach HPC topologies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 100G BiDi optical transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AFBR-89BDDZ-HW2 | Hardware revision with validated special requirements per Broadcom addendum; identical optical specs and pinout | Same use cases; intended for deployments requiring documented compliance with HW2-level validation | Select when system qualification mandates HW2-specific test reports or firmware signature verification |
| AFBR-89BDZ | Lacks BiDi PAM4 implementation - supports only 4×25G NRZ SR4; different electrical interface and optical lane mapping | Requires 4-fiber MPO-12 cabling; incompatible with duplex LC infrastructure | Choose only if migrating from legacy SR4 architecture and MPO cabling is already deployed |
Compared with AFBR-89BDZ (SR4), the AFBR-89BDDZ delivers 100G over two fibers instead of eight, reducing cable plant cost and improving patch panel density; versus AFBR-89BDDZ-HW2, it shares identical functionality but may lack traceable validation for certain OEM release gates.
Availability
AFBR-89BDDZ is available at Aetrix Electronics and suitable for data center interconnects, cloud infrastructure scaling, and enterprise network upgrades requiring stable component supply and long-term lifecycle assurance.
Supply support for AFBR-89BDDZ 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. is a global semiconductor leader designing connectivity, networking, and optical infrastructure solutions for data centers, enterprise, and service provider markets.
The AFBR-89BDDZ belongs to Broadcom's QSFP28 BiDi transceiver product line, engineered specifically to enable 100G Ethernet migration over installed duplex LC multimode fiber cabling.
FAQ
What is the maximum supported fiber distance for AFBR-89BDDZ?
The AFBR-89BDDZ supports up to 100 meters over OM4 multimode fiber and 70 meters over OM3, as validated per IEEE 802.3cd 100GBASE-SR2 specifications. This reach is enabled by its VCSEL-based PAM4 BiDi architecture and specified average launch power range of −4.4 dBm to +4.0 dBm per lane.
Does AFBR-89BDDZ require external configuration or firmware loading?
No, the AFBR-89BDDZ operates as a standards-compliant QSFP28 module with built-in EEPROM containing SFF-8636-compliant memory map. Host systems read vendor ID, part number, and calibration data automatically; no external firmware loading or configuration is needed for basic 100GBASE-SR2 operation.
Is AFBR-89BDDZ compatible with non-Broadcom switch platforms?
Yes, AFBR-89BDDZ is MSA-compliant and interoperates with major vendors including Cisco (with appropriate license), Arista, Juniper, and NVIDIA Spectrum switches. Interoperability depends on host platform support for QSFP28 PAM4 BiDi mode and proper DOM register interpretation.
What diagnostic functions does AFBR-89BDDZ support via its I²C interface?
The AFBR-89BDDZ provides full SFF-8636 Digital Diagnostic Monitoring (DOM) over I²C, including real-time readings for case temperature, Vcc supply, TX bias current, TX output power, RX input power, and alarm/warning flags for loss of signal and laser fault conditions.
How does AFBR-89BDDZ differ from AFBR-89BDDZ-HW2?
The AFBR-89BDDZ-HW2 is a hardware revision of AFBR-89BDDZ with additional validation per a Broadcom addendum, covering special requirements such as enhanced EMI immunity and extended burn-in testing. Both share identical optical, electrical, and mechanical specifications and are functionally interchangeable in most deployments.
AFBR-89BDDZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- AFBR
- Packaging:
- Tray
- Product Status:
- Obsolete
- Data Rate:
- 25.78125Gbps
- Wavelength:
- 850nm
- Applications:
- Ethernet
- Voltage - Supply:
- 3.1V ~ 3.5V
- Connector Type:
- LC Duplex
- Mounting Type:
- Pluggable, QSFP28
AFBR-89BDDZ FAQ
1.How can I place an order for AFBR-89BDDZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AFBR-89BDDZ 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-89BDDZ reliable?
The price and inventory of AFBR-89BDDZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AFBR-89BDDZ is usually 5 days.
3.What payment methods are accepted for AFBR-89BDDZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AFBR-89BDDZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AFBR-89BDDZ?
AFBR-89BDDZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AFBR-89BDDZ 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-89BDDZ?
For technical support, including AFBR-89BDDZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AFBR-89BDDZ requirements.
6.How does Aetrix verify that AFBR-89BDDZ is sourced from the original manufacturer or authorized distributors?
All AFBR-89BDDZ 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-89BDDZ meets industry standards.
7.What is the process for return or replacement of AFBR-89BDDZ?
All AFBR-89BDDZ units undergo pre-shipment inspection (PSI). If there is an issue with AFBR-89BDDZ, 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-89BDDZ part is unused and in its original packaging.
Return procedure for AFBR-89BDDZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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