AX7PBF4-156.2500C Equivalent & Substitute Parts

Part Overview

The AX7PBF4-156.2500C is a 156.25 MHz XO (Standard) LVPECL Oscillator manufactured by Abracon LLC as part of the ClearClock™ AX7 series. This surface mount crystal oscillator operates at 2.5V with Enable/Disable functionality and is housed in an 8-SMD, No Lead package measuring 7.00mm x 5.00mm. The part is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

AX7PBF4-156.2500C

Abracon LLCIn Stock: 1109AX7PBF4-156.2500C Datasheet

Current PartRFQ

ODJMDLLTNF-156.250000

TaitienIn Stock: 912ODJMDLLTNF-156.250000 Datasheet

DirectRFQ

AX7PBF1-156.2500C

Abracon LLCIn Stock: 747AX7PBF1-156.2500C Datasheet

Parametric EquivalentRFQ

AX7PBF3-156.2500C

Abracon LLCIn Stock: 1181AX7PBF3-156.2500C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AX7PBF4-156.2500C is determined by strict equivalence across the following critical parameters: frequency (156.25 MHz), output type (LVPECL), supply voltage (2.5V), function (Enable/Disable), frequency stability (±25ppm), operating temperature range (-40°C ~ 85°C), and package configuration (8-SMD, No Lead with 7.00mm x 5.00mm footprint).

Substitute parts are grouped into two categories:

Parametric Equivalents (Abracon LLC): AX7PBF1-156.2500C and AX7PBF3-156.2500C are direct parametric equivalents within the same manufacturer's ClearClock™ AX7 series, sharing identical electrical specifications and package dimensions.

Direct Manufacturer Equivalent (Taitien): ODJMDLLTNF-156.250000 from Taitien's OD-M series meets all critical electrical and mechanical parameters, with maximum supply current of 95mA (compared to 94mA for the main part) and maximum height of 1.85mm (compared to 1.90mm for the main part), both within acceptable tolerance for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring the AX7PBF4-156.2500C, the following selection criteria apply:

Abracon LLC Parametric Equivalents (AX7PBF1-156.2500C, AX7PBF3-156.2500C): These parts are direct parametric equivalents with identical electrical and mechanical specifications. Both are discontinued at DiGi Electronics but may be available through alternative distribution channels. Selection between these two Abracon variants and the main part depends on inventory availability and supply chain requirements.

Taitien ODJMDLLTNF-156.250000: This part is currently active and represents the primary cross-manufacturer substitute. It meets all critical electrical parameters and maintains package compatibility. The maximum supply current in disable mode (95mA) is marginally higher than the Abracon specification (86mA), and the maximum height (1.85mm) is slightly lower than the main part (1.90mm). Both variations are within acceptable engineering tolerance for direct substitution in standard PCB designs.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical frequency stability specifications, ensuring regulatory and environmental compatibility with the original design.

Frequently Asked Questions (FAQ)

Q: Can AX7PBF1-156.2500C and AX7PBF3-156.2500C be used interchangeably with AX7PBF4-156.2500C?

A: Yes. These Abracon LLC parts are parametric equivalents with identical electrical specifications, frequency stability, operating temperature range, and package dimensions. They are direct substitutes for the AX7PBF4-156.2500C in any application.

Q: Is the Taitien ODJMDLLTNF-156.250000 a suitable cross-manufacturer substitute?

A: Yes. The Taitien part meets all critical electrical parameters: 156.25 MHz frequency, LVPECL output, 2.5V supply, Enable/Disable function, ±25ppm stability, and -40°C ~ 85°C operating range. Package dimensions and footprint are identical. The part is currently active in distribution, making it a viable alternative to discontinued Abracon variants.

Q: What are the differences in supply current specifications?

A: The main part and Abracon equivalents specify 94mA maximum supply current and 86mA maximum disable current. The Taitien substitute specifies 95mA for both active and disable modes. This 1mA difference in active mode and 9mA difference in disable mode is within standard engineering tolerance and does not affect circuit compatibility.

Q: Are there package footprint differences between substitutes?

A: All parts use identical 8-SMD, No Lead packages with 7.00mm x 5.00mm footprints. The Taitien part has a maximum height of 1.85mm compared to 1.90mm for Abracon parts. This 0.05mm difference is negligible for standard PCB assembly and does not require design modifications.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All parts are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.