AFCT-5705ALZ Equivalent & Substitute Parts

Part Overview

The AFCT-5705ALZ is a transceiver module manufactured by Broadcom Limited, designed for Ethernet applications requiring 1.25Gbd data transmission at 1310nm wavelength. This SFP (Small Form-factor Pluggable) module features LC duplex connectors and operates within a 3.14V to 3.47V supply voltage range. The product is classified as Obsolete, making identification of equivalent and substitute parts essential for system maintenance, upgrades, and procurement planning.

Substiute Parts

AFCT-5705ALZ

Broadcom LimitedIn Stock: 1339AFCT-5705ALZ Datasheet

Current PartRFQ

AFCT-725SMZ

Broadcom LimitedIn Stock: 1046AFCT-725SMZ Datasheet

SimilarRFQ

AFCT-5705ALZ-C

ProLabsIn Stock: 2841AFCT-5705ALZ-C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AFCT-5705ALZ is determined by the following critical parameters:

• Wavelength: 1310nm (primary optical characteristic)
• Connector Type: LC (physical interface requirement)
• Mounting Type: Pluggable, SFP or SFP28 (form factor compatibility)
• Voltage Supply Range: Compatibility with 3.3V or higher supply systems
• RoHS Compliance: ROHS3 or equivalent environmental certification

The identified substitute parts maintain the 1310nm wavelength and LC connector specifications, ensuring optical and mechanical compatibility. However, differences in data rate, form factor (SFP vs. SFP28), and voltage specifications must be evaluated against system requirements.

Parameter Comparison

Engineering Selection Recommendations

AFCT-5705ALZ-C (ProLabs): This substitute is the primary equivalent for direct replacement. Manufactured by ProLabs as a compatible alternative to the Broadcom AFCT-5705ALZ, it maintains identical wavelength (1310nm), connector type (LC), and mounting type (SFP). The part carries Active product status, ensuring continued availability and support. RoHS compliance is confirmed. This option is suitable for systems requiring direct form-factor and optical compatibility without data rate upgrades.

AFCT-725SMZ (Broadcom Limited): This substitute represents a performance upgrade path. While maintaining the 1310nm wavelength and LC connector, it operates at 25Gbps compared to the original 1.25Gbd specification. The form factor transitions from SFP to SFP28, requiring compatible host equipment. Supply voltage is 3.3V, which is within the operational range of systems designed for the original part. This option is applicable only when system architecture supports SFP28 modules and higher data rates are acceptable. Product status is Last Time Buy, indicating limited future availability.

Frequently Asked Questions (FAQ)

Q: Can AFCT-725SMZ be used as a direct replacement for AFCT-5705ALZ?

A: No. While both modules operate at 1310nm with LC connectors, the AFCT-725SMZ uses SFP28 form factor versus the SFP form factor of the original part. Host equipment must support SFP28 modules. Additionally, the data rate increases from 1.25Gbd to 25Gbps, which may require system reconfiguration.

Q: Is AFCT-5705ALZ-C a direct equivalent?

A: Yes, for form factor and optical specifications. The AFCT-5705ALZ-C maintains SFP form factor, 1310nm wavelength, and LC connector compatibility. It is manufactured by ProLabs as a compatible alternative and carries Active product status, making it suitable for direct substitution in existing SFP-based systems.

Q: What are the voltage compatibility considerations?

A: The original AFCT-5705ALZ operates at 3.14V to 3.47V. The AFCT-725SMZ operates at 3.3V, which falls within the original voltage range. Systems designed for the original part can accommodate the substitute from a voltage perspective. The AFCT-5705ALZ-C voltage specification is not provided; verification against system requirements is necessary.

Q: Why is the original part classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and support. Substitute parts ensure continued system operation and maintenance capability.

Q: What is the significance of Moisture Sensitivity Level differences?

A: The original part has MSL 3 (168 hours), while AFCT-725SMZ has MSL 1 (unlimited). Lower MSL values indicate greater tolerance to moisture exposure during storage and handling. AFCT-725SMZ offers superior moisture resistance characteristics.