AX7PBF4-491.5200C Equivalent & Substitute Parts

Part Overview

The AX7PBF4-491.5200C is a 491.52 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, housed in an 8-SMD, No Lead package measuring 7.00mm x 5.00mm. The product is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

AX7PBF4-491.5200C

Abracon LLCIn Stock: 1150AX7PBF4-491.5200C Datasheet

Current PartRFQ

AX7PBF1-491.5200C

Abracon LLCIn Stock: 774AX7PBF1-491.5200C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX7PBF4-491.5200C is determined by strict equivalence across the following critical parameters:

• Frequency: 491.52 MHz (exact match required)
• Output Type: LVPECL (exact match required)
• Supply Voltage: 2.5V (exact match required)
• Function: Enable/Disable (exact match required)
• Package Type: 8-SMD, No Lead (exact match required)
• Package Dimensions: 7.00mm x 5.00mm footprint (exact match required)
• Frequency Stability: ±25ppm (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)

The AX7PBF1-491.5200C qualifies as a parametric equivalent substitute based on identical specifications across all critical electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The AX7PBF1-491.5200C is a direct parametric equivalent to the AX7PBF4-491.5200C. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. The substitute part maintains identical electrical performance, thermal operating range, and mechanical compatibility. Selection between these parts is based on component availability and procurement requirements, as both meet the same regulatory and compliance standards.

Frequently Asked Questions (FAQ)

Q: Can the AX7PBF1-491.5200C be used as a direct replacement for the AX7PBF4-491.5200C?

A: Yes. Both parts are parametric equivalents with identical frequency, output type, supply voltage, package dimensions, and electrical characteristics. No circuit modifications are required.

Q: Are there any differences in the 8-SMD, No Lead package between these parts?

A: No. Both parts use the identical 8-SMD, No Lead package with 7.00mm x 5.00mm footprint and 1.90mm maximum seated height. PCB layout and reflow profiles remain unchanged.

Q: Do both parts support Enable/Disable functionality?

A: Yes. Both the AX7PBF4-491.5200C and AX7PBF1-491.5200C include Enable/Disable control with identical current specifications in both active and disable modes.

Q: What is the significance of the part number suffix difference (PBF4 vs. PBF1)?

A: The suffix indicates internal manufacturing or design revision within the Abracon ClearClock™ AX7 series. Both suffixes deliver identical electrical and mechanical performance for the 491.52 MHz LVPECL oscillator specification.

Q: Are compliance certifications identical between these parts?

A: Yes. Both parts carry ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Moisture sensitivity level is 1 (Unlimited) for both.