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Broadcom Limited AFBR-5823QZ
- Part No.:
- AFBR-5823QZ
- Manufacturer:
- Broadcom Limited
- Category:
- Fiber Optic Transceiver Modules
- Package:
- Datasheet:
-
AFBR-5823QZ.pdf
- Description:
- FE TRX SC-TYPE DUPLEX 2X9
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AFBR-5823QZ from Broadcom is a 2×9-form-factor digital diagnostic-enabled 125-Mbaud Fast Ethernet optical transceiver with SC duplex connector, operating at 1300 nm over multimode fiber, delivering –17 dBm typical launched power and supporting –31 dBm receiver sensitivity for up to 2 km links in 62.5/125-μm fiber.
For engineers reviewing the AFBR-5823QZ datasheet, pinout, applications, or equivalent options, this transceiver provides real-time SFF-8472-compliant monitoring of temperature, Tx bias current, Tx output power, Rx input power, and Rx_LOS - all via 2-wire I²C interface (SDA/SCL pins) - enabling embedded diagnostics in industrial media converters and backbone switches.
Technical Context
The AFBR-5823QZ integrates an InGaP LED transmitter and InGaAs PIN photodiode receiver with on-board silicon ICs for PECL-compatible differential signaling (3.3 V LVPECL), AC-coupled Tx input, DCPECL Rx output, and integrated signal detect (SD) with 100 μs assert/deassert timing. It supports both hardware Tx_Disable (pin 10) and software-controlled disable via DMI register (A2h byte 110, bit 6).
Its digital diagnostic interface complies fully with SFF-8472 MSA, featuring dual 256-byte EEPROM maps (A0h serial ID, A2h diagnostics), real-time analog parameter readout (±3.0 dB optical power accuracy), and configurable alarm/warning thresholds - all accessible within 300 ms after power-on (t_init) and 1000 ms for analog data readiness (t_data).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 125 Mbaud - supports IEEE 802.3u 100BASE-FX Fast Ethernet and FDDI physical layer timing |
| Wavelength | 1300 nm nominal - optimized for low dispersion in 50/125-μm and 62.5/125-μm multimode fiber |
| Tx Output Power | –17 dBm typical (62.5/125-μm) - ensures ≥12 dB link margin over 2 km at –31 dBm receiver sensitivity |
| Rx Sensitivity | –31 dBm (BER < 1×10⁻¹⁰) - enables robust operation in noisy industrial environments |
| Supply Voltage | 3.3 V ±3% - single-rail operation compatible with standard logic power domains |
| Operating Temp | –40°C to +85°C - qualified for uncontrolled industrial cabinet deployments |
| Diagnostic Interface | I²C (SDA/SCL) at up to 400 kHz - enables host MCU-based real-time health monitoring without external ADCs |
Pinout & Package
AFBR-5823QZ uses a 2×9-pin surface-mount package with duplex SC receptacle, compliant with multisource 1×9/2×9 mechanical definitions and DIN EN 61754-4 interface standard. Overall dimensions: 50.2 mm × 12.7 mm × 16.28 mm (L×W×H), with 2.54 mm pin pitch and two mechanical solder posts (non-electrical) for board retention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VEER | Receiver ground | Direct connection to host PCB ground plane; low-inductance return path for Rx signals |
| 2 RD+ | Receiver differential data out (+) | 3.3 V LVPECL-compatible; requires 100 Ω differential termination at receiving PHY |
| 3 RD− | Receiver differential data out (−) | Paired with RD+; forms ECL-referenced differential pair for noise-immune data recovery |
| 4 SD | Signal detect output | DCPECL logic "1" when valid optical input present; used for link-up indication or auto-power-down control |
| 5 VCCR | Receiver power supply | +3.3 V input filtered locally; separate rail from transmitter to minimize crosstalk |
| 6 VCCT | Transmitter power supply | +3.3 V input filtered locally; decoupling must be placed adjacent to pin per Figure 10 |
| 7 TD− | Transmitter differential data in (−) | LVPECL/LVDS-compatible; internally AC-coupled and terminated (100 Ω) |
| 8 TD+ | Transmitter differential data in (+) | Paired with TD−; accepts differential logic from MAC/PHY without external termination |
| 9 VEET | Transmitter ground | Separate ground return for Tx section; prevents ground bounce coupling into Rx path |
| 10 TX_Disable | Hardware transmitter disable | Active-high TTL/CMOS input; forces LED off within 10 μs (t_on) for safe hot-plug or fault isolation |
| 17 SDA | DMI data line | I²C bidirectional data; supports up to 400 kHz clock with 5 μs inter-byte pause requirement |
| 18 SCL | DMI clock line | I²C clock input; host-controlled; enables read/write access to EEPROM diagnostics memory map (A2h) |
| 19, 20 N.C. | Mechanical stabilization | No electrical function; structural pins for board-level mechanical rigidity during cable mating |
Key Features
| Feature | Design Value |
|---|---|
| SFF-8472 Digital Diagnostics | Real-time monitoring of temperature, Tx bias current, Tx output power, Rx input power, and Rx_LOS via I²C - eliminates need for external sensors in media converter BOM |
| Industrial Temperature Range | –40°C to +85°C ambient operation - validated across full electrical/optical specs, enabling deployment in factory-floor switches and outdoor cabinets |
| Dual Power Supply Isolation | Separate VCCR and VCCT pins with dedicated local filtering - reduces supply coupling between Rx and Tx sections, improving BER stability |
| Hardware Tx Disable | Pin 10 assertion disables LED within 10 μs - supports rapid link shutdown during fault conditions without software intervention |
| RoHS & Laser Class 1 Compliance | UL-certified (E173874), TÜV-classified (R 50377267), and RoHS II (2015-863) - meets global safety and environmental requirements for commercial and industrial systems |
Applications
| Media Converter Link | Fiber Backbone Switch |
|---|---|
Use Scenario: Converting copper-based 100BASE-TX Ethernet to multimode fiber for building-to-building interconnects up to 2 km. IC Role / Device Role / Timing Role: Optical transceiver providing physical layer conversion between electrical and optical domains with precise 125-Mbaud NRZI timing alignment. Use Value: Enables legacy copper infrastructure extension using low-cost 62.5/125-μm fiber while maintaining full IEEE 802.3u compliance and link fault detection via Rx_LOS. |
Use Scenario: Front-panel fiber uplink module in industrial Ethernet switches deployed in manufacturing automation cells. IC Role / Device Role / Timing Role: Pluggable 2×9 transceiver implementing 100BASE-FX PHY layer with deterministic SD assertion (<100 μs) for fast link failover. Use Value: Supports hot-swap-capable modular switch designs with real-time thermal and optical power telemetry for predictive maintenance and firmware-triggered Tx disable. |
| Wiring Closet to Desktop | FDDI Network Interface |
Use Scenario: Cost-sensitive fiber drop from telecom wiring closet to office desktop workstations using 50/125-μm OM2 fiber. IC Role / Device Role / Timing Role: Low-power optical transceiver delivering –20 dBm typical launch power into 50/125-μm fiber with 1300 nm spectral optimization. Use Value: Achieves >15 dB link margin over 500 m reach while consuming ≤100 mA Tx current - reducing thermal load in dense patch-panel environments. |
Use Scenario: Interfacing legacy FDDI backbone networks to modern Ethernet aggregation points via protocol-transparent optical bridging. IC Role / Device Role / Timing Role: Bit-transparent 125-Mbaud optical repeater compatible with FDDI PMD layer and 4B/5B encoding. Use Value: Maintains full FDDI timing jitter budget (DDJ ≤0.6 ns, RJ ≤0.69 ns) while adding digital diagnostics for network operations center (NOC) visibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar optical transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AFBR-5823TQZ | Identical electrical/optical specs and DMI functionality, but uses ST duplex connector instead of SC | Requires ST-compatible patch panels and cables; incompatible with SC-based infrastructure | Select when existing fiber plant uses ST connectors or legacy FDDI installations demand ST mechanical interface |
| AFBR-5813QZ | 1×9 package (9 pins only), no SDA/SCL pins or DMI capability; lacks Tx_Disable and Rx_LOS monitoring | Supports basic 100BASE-FX only - no real-time diagnostics or software-controlled disable | Select for cost-sensitive, non-diagnostic applications where board space is constrained and diagnostic telemetry is unnecessary |
Compared with AFBR-5823QZ, AFBR-5823TQZ offers identical performance with mechanical ST compatibility, while AFBR-5813QZ sacrifices diagnostics and software control for lower pin count and cost - making AFBR-5823QZ the optimal choice for industrial systems requiring field-serviceable, telemetry-enabled fiber links.
Availability
AFBR-5823QZ is available at Aetrix Electronics and suitable for industrial media converters, fiber backbone switches, wiring closet-to-desktop links, and FDDI-to-Ethernet bridging applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AFBR-5823QZ 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 specializing in wired and wireless communications infrastructure, with deep expertise in optical interconnects, high-speed networking, and enterprise connectivity solutions.
The AFBR-5823QZ belongs to Broadcom's AFBR-58x3xxZ family of 125-Mbaud optical transceivers designed specifically for cost-effective, standards-compliant Fast Ethernet and FDDI implementations in industrial, telecom, and enterprise environments.
FAQ
What is the maximum supported fiber distance for AFBR-5823QZ in 62.5/125-μm multimode fiber?
The AFBR-5823QZ supports up to 2 km in 62.5/125-μm multimode fiber with NA = 0.275, based on its –17 dBm typical transmit power and –31 dBm receiver sensitivity at BER < 1×10⁻¹⁰. This meets IEEE 802.3u 100BASE-FX specifications for backbone links and is validated across the full –40°C to +85°C operating range. The AFBR-5823QZ achieves this with 1300 nm InGaP LED emission and optimized optical coupling.
Does AFBR-5823QZ support software-controlled transmitter disable via the DMI interface?
Yes, AFBR-5823QZ supports software-controlled transmitter disable through its SFF-8472-compliant DMI interface. Writing bit 6 of byte 110 (address A2h) to "1" asserts Tx_Disable, disabling the LED within 100 ms (t_off_soft). This complements the hardware pin 10 control and enables remote fault isolation in managed network equipment. The AFBR-5823QZ implements full SFF-8472 alarm/warning flag handling for this function.
What are the key differences between AFBR-5823QZ and AFBR-5813QZ?
The AFBR-5823QZ is a 2×9 transceiver with SDA/SCL pins, Tx_Disable, and full SFF-8472 digital diagnostics, while AFBR-5813QZ is a 1×9 device with no DMI interface, no Tx_Disable pin, and no real-time monitoring capability. Both share identical optical specs and SC connector, but AFBR-5823QZ adds 11 pins (including SDA/SCL/N.C.) for telemetry and control - making AFBR-5823QZ suitable for intelligent media converters and AFBR-5813QZ for basic point-to-point links.
Is AFBR-5823QZ compliant with laser safety standards?
Yes, AFBR-5823QZ is certified as a Class 1 laser product per EN 60825-1:Edition 3.0, with TÜV certificate R 50377267. Its 1300 nm InGaP LED emits non-coherent light at power levels inherently safe under all normal and single-fault conditions. No user-accessible adjustments affect radiation exposure, and the AFBR-5823QZ meets eye safety requirements without additional enclosure shielding.
What is the recommended termination for AFBR-5823QZ differential data lines?
The AFBR-5823QZ RD+/RD− and TD+/TD− lines are 3.3 V LVPECL-compatible and require 100 Ω differential termination at the receiving device (e.g., PHY IC), not at the transceiver itself. Per Figure 10 of the datasheet, split-load termination (82 Ω to VCC, 130 Ω to ground per leg) is recommended at the PHY input. The AFBR-5823QZ includes internal 100 Ω differential input termination for TD+/TD−, eliminating external components on the transmit side.
AFBR-5823QZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- AFBR-58x3xxZ
- Packaging:
- Tray
- Product Status:
- Active
- Data Rate:
- 125MBd
- Wavelength:
- 1308nm
- Applications:
- Ethernet
- Voltage - Supply:
- 3.13V ~ 3.47V
- Connector Type:
- SC
- Mounting Type:
- Through Hole
AFBR-5823QZ FAQ
1.How can I place an order for AFBR-5823QZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AFBR-5823QZ 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-5823QZ reliable?
The price and inventory of AFBR-5823QZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AFBR-5823QZ is usually 5 days.
3.What payment methods are accepted for AFBR-5823QZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AFBR-5823QZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AFBR-5823QZ?
AFBR-5823QZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AFBR-5823QZ 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-5823QZ?
For technical support, including AFBR-5823QZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AFBR-5823QZ requirements.
6.How does Aetrix verify that AFBR-5823QZ is sourced from the original manufacturer or authorized distributors?
All AFBR-5823QZ 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-5823QZ meets industry standards.
7.What is the process for return or replacement of AFBR-5823QZ?
All AFBR-5823QZ units undergo pre-shipment inspection (PSI). If there is an issue with AFBR-5823QZ, 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-5823QZ part is unused and in its original packaging.
Return procedure for AFBR-5823QZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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