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Broadcom Limited AFBR-703SMZ
- Part No.:
- AFBR-703SMZ
- Manufacturer:
- Broadcom Limited
- Category:
- Fiber Optic Transceiver Modules
- Package:
- Datasheet:
-
AFBR-703SMZ.pdf
- Description:
- TXRX SFP+ 850NM 10GB EITHERNET
- Quantity:
- Payment:
- Shipping:
Inventory:2,031
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Product details
Overview
AFBR-703SMZ from Avago Technologies is a hot-pluggable SFP+ optical transceiver for 10Gb Ethernet over multimode fiber, compliant with IEEE 802.3ae 10GBASE-SR, SFF-8431 electrical interface, and SFF-8472 digital diagnostics. It integrates an 850 nm VCSEL transmitter and PIN photodiode receiver in an LC duplex package, delivering -4.3 dBm minimum OMA output power and supporting 300 m links on OM3 fiber.
For engineers reviewing the AFBR-703SMZ datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-time diagnostic capabilities (Tx_Bias, Tx_Power, Rx_Power, temperature, Vcc), EMI-optimized SFP+ mechanical compliance (SFF-8432), Class 1 eye safety certification (IEC 60825-1/CDRH), and full SFF-8472 digital monitoring implementation.
Technical Context
The AFBR-703SMZ implements a CML-based 10.312 Gb/s serial interface with AC-coupled differential TD+/TD− inputs and RD+/RD− outputs, internally terminated to 100 Ω. Its two-wire serial management interface operates at up to 400 kHz across addresses 0xA0 (SFF-8431 EEPROM) and 0xA2 (SFF-8472 diagnostics), supporting predictive failure identification via real-time Tx_Bias and Tx_Power monitoring.
It features integrated laser safety circuitry that disables transmission upon detection of out-of-spec optical power, with fault status reported via open-collector TX_FAULT (pin 2) and mirrored in byte 110, bit 2 of address 0xA2. Receiver loss-of-signal (RX_LOS) is generated by AC-level transition detection and available both as LVTTL output (pin 8) and register-mapped status (0xA2, byte 110, bit 1).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standard Compliance | IEEE 802.3ae 10GBASE-SR, SFF-8431, SFF-8472, SFF-8432, RoHS, IEC 60825-1 Class 1 |
| Data Rate | 10.312 Gb/s - supports full 10GbE line rate with <0.70 UIp-p total jitter |
| Optical Output | -4.3 dBm min OMA - ensures link margin for 300 m on OM3 fiber per IEEE spec |
| Receiver Sensitivity | -11.1 dBm OMA - enables reliable detection under worst-case modal dispersion |
| Power Dissipation | 600 mW typical - fits thermal envelope of high-port-density SFP+ chassis |
| Operating Temperature | 0 °C to +70 °C case - validated for enterprise switch/router front-panel deployment |
| Digital Diagnostics | Real-time Tx_Bias, Tx_Power, Rx_Power, Vcc, temperature - enables predictive maintenance and compliance verification |
Pinout & Package
The AFBR-703SMZ uses a 20-pin SFP+ edge connector per SFF-8432, housed in a metal-shielded, RoHS-compliant module with LC duplex optical interface. Mechanical dimensions conform to INF-8074 and SFF-8432 specifications for interoperability with standard SFP+ cages.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10–11, 14, 17, 20 | VeeT / VeeR | Isolated signal grounds for transmitter/receiver sections - prevents ground loop noise coupling |
| 2 | TX_FAULT | Open-collector LVTTL fault indicator - latched high on laser fault; requires host pull-up |
| 3 | TX_DISABLE | LVTTL input with internal 4.7–10 kΩ pull-up - disables VCSEL when high; resets TX_FAULT when toggled |
| 4–5 | SDA / SCL | Two-wire serial interface (I²C-compatible) - accesses SFF-8431 EEPROM (0xA0) and SFF-8472 diagnostics (0xA2) |
| 6 | MOD_ABS | Module absent indicator - pulled to VeeT/VeeR internally; signals host when module is unseated |
| 8 | RX_LOS | LVTTL output - asserts high when received optical power drops below -12 dBm OMA |
| 12–13 | RD− / RD+ | CML differential receiver outputs - AC-coupled, require external 100 Ω termination on host board |
| 15–16 | VccR / VccT | +3.3 V supply pins - must be within 0.5 V of each other to prevent damage |
| 18–19 | TD+ / TD− | CML differential transmitter inputs - internally AC-coupled and 100 Ω terminated |
Key Features
| Feature | Design Value |
|---|---|
| Predictive Failure Identification | Monitors Tx_Bias and Tx_Power in real time to detect early laser degradation before link errors occur |
| Compliance Prediction | Provides live Vcc and temperature readings to verify operation within IEEE 802.3ae environmental limits |
| Fault Isolation | Combines TX_FAULT, RX_LOS, and analog monitor data to distinguish local vs. remote vs. cable plant faults |
| EMI-Optimized Shielding | Metal housing and SFF-8432-compliant design achieves margin to FCC Class B and CISPR 22 limits in dense port layouts |
| Class 1 Eye Safety | Hardware-enforced shutdown on optical over-power; certified to IEC 60825-1 and US CDRH requirements |
Applications
| Data Center Top-of-Rack Switching | Enterprise Core Router Interconnects |
|---|---|
Use Scenario: 10GbE uplinks between TOR switches and aggregation layer in cloud-scale data centers. IC Role / Device Role / Timing Role: SFP+ pluggable transceiver providing 10GBASE-SR optical interface with hot-swap capability. Use Value: Enables 300 m reach on low-cost OM3 fiber while maintaining Class 1 eye safety and SFF-8472 diagnostics for automated link health monitoring. | Use Scenario: High-density 10GbE interconnects between core routers and distribution switches in campus networks. IC Role / Device Role / Timing Role: Hot-pluggable optical transceiver implementing IEEE 802.3ae physical layer with digital diagnostics. Use Value: Delivers deterministic jitter <0.70 UIp-p and stressed sensitivity -7.5 dBm to sustain error-free operation across thermally variable rack environments. |
| High-Performance Computing Clusters | Financial Trading Network Infrastructure |
Use Scenario: Low-latency 10GbE fabric links between compute nodes and storage arrays in HPC clusters. IC Role / Device Role / Timing Role: Optical transceiver with CML I/O and sub-100 µs fault signaling for rapid link recovery. Use Value: Achieves <28 ps rise/fall time and vertical eye closure penalty ≤3.5 dB to preserve signal integrity in multi-hop switched fabrics. | Use Scenario: Ultra-reliable 10GbE connections between trading servers and market data feeds in co-located data centers. IC Role / Device Role / Timing Role: SFP+ transceiver with dual-fault reporting (TX_FAULT + RX_LOS) and predictive diagnostics. Use Value: Supports failover automation via real-time Tx_Bias/Tx_Power trending, minimizing downtime during volatile market conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10GBASE-SR SFP+ transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AFBR-703ASDZ | Same optical specs but rated for 0–85 °C case temperature; higher max operating temp than AFBR-703SMZ (0–70 °C) | Better suited for thermally constrained chassis or extended-temperature industrial deployments | Select AFBR-703ASDZ when ambient case temperature may exceed 70 °C |
| AFCT-701SDZ | 10GBASE-LR variant for single-mode fiber; 1310 nm DFB laser; 10 km reach; different wavelength and fiber type | Used in metro/access networks requiring longer reach over SMF, not MMF | Choose AFCT-701SDZ only for single-mode infrastructure; not interchangeable with AFBR-703SMZ |
Compared with AFBR-703ASDZ, the AFBR-703SMZ trades extended temperature range for tighter thermal validation at lower cost; versus AFCT-701SDZ, it provides optimized multimode performance at 850 nm but cannot operate on single-mode fiber or beyond 300 m.
Availability
AFBR-703SMZ is available at Aetrix Electronics and suitable for data center switching, enterprise routing, and high-performance computing applications requiring stable component supply, full SFF-8472 diagnostics, and Class 1 eye safety certification.
Supply support for AFBR-703SMZ 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 networking, wireless infrastructure, and industrial sensing.
The AFBR-703SMZ belongs to Avago's SFP+ 10GBASE-SR transceiver product line, engineered specifically for high-port-density 10GbE equipment with stringent EMI, thermal, and reliability requirements in enterprise and cloud data centers.
FAQ
What is the maximum supported link distance for AFBR-703SMZ on OM3 multimode fiber?
The AFBR-703SMZ supports up to 300 meters on OM3 multimode fiber, as defined by IEEE 802.3ae 10GBASE-SR compliance. This distance assumes nominal launch conditions, proper fiber handling, and operation within the recommended case temperature range of 0–70 °C. The transceiver's -4.3 dBm minimum OMA output and -11.1 dBm receive sensitivity provide sufficient link budget for this reach.
Does AFBR-703SMZ support digital diagnostics, and which parameters are monitored?
Yes, the AFBR-703SMZ fully implements SFF-8472 digital diagnostics via its two-wire interface (addresses 0xA0 and 0xA2). Monitored real-time parameters include transmitter bias current (Tx_Bias), transmitted optical power (Tx_Power), received optical power (Rx_Power), supply voltage (Vcc), and case temperature - all accessible for predictive failure analysis and compliance verification.
What safety certifications does AFBR-703SMZ hold, and how is eye safety enforced?
The AFBR-703SMZ is certified Class 1 eye safe per IEC 60825-1 and US FDA CDRH requirements. Eye safety is enforced by hardware-level circuitry that continuously monitors optical output power and disables the VCSEL if emission exceeds Class 1 limits - a condition that also asserts the TX_FAULT signal and sets bit 2 in SFF-8472 register 0xA2, byte 110.
Can AFBR-703SMZ be used in systems requiring FCC Class B EMI compliance?
Yes, the AFBR-703SMZ's metal-shielded SFP+ housing and SFF-8432-compliant mechanical design enable system-level FCC Class B and CISPR 22 compliance. Its EMI performance has been validated with margin to these limits in high-port-density configurations, provided the host system uses SFP+ cages per SFF-8432 and follows recommended PCB layout practices for the 20-pin edge connector.
What are the key timing requirements for TX_DISABLE and TX_FAULT signals on AFBR-703SMZ?
TX_DISABLE assert time is 10 µs (optical output falls below 10% of nominal); negate time is 2 ms (output rises above 90%). TX_FAULT assert time is 100 µs after fault detection. All timing values are specified over the recommended operating conditions (0–70 °C, 3.135–3.465 V). These timings are critical for host firmware to coordinate safe link shutdown and recovery sequences without violating IEEE 802.3ae or SFF-8431 requirements.
AFBR-703SMZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Data Rate:
- 10Gbs
- Wavelength:
- 850nm
- Applications:
- General Purpose
- Voltage - Supply:
- 3.3V
- Connector Type:
- LC
- Mounting Type:
- Pluggable, SFP
AFBR-703SMZ FAQ
1.How can I place an order for AFBR-703SMZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AFBR-703SMZ 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-703SMZ reliable?
The price and inventory of AFBR-703SMZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AFBR-703SMZ is usually 5 days.
3.What payment methods are accepted for AFBR-703SMZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AFBR-703SMZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AFBR-703SMZ?
AFBR-703SMZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AFBR-703SMZ 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-703SMZ?
For technical support, including AFBR-703SMZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AFBR-703SMZ requirements.
6.How does Aetrix verify that AFBR-703SMZ is sourced from the original manufacturer or authorized distributors?
All AFBR-703SMZ 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-703SMZ meets industry standards.
7.What is the process for return or replacement of AFBR-703SMZ?
All AFBR-703SMZ units undergo pre-shipment inspection (PSI). If there is an issue with AFBR-703SMZ, 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-703SMZ part is unused and in its original packaging.
Return procedure for AFBR-703SMZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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