AX5MBF4-322.265625C Equivalent & Substitute Parts

Part Overview

The AX5MBF4-322.265625C is a 322.265625 MHz XO (Standard) CML Oscillator manufactured by Abracon LLC, operating at 2.5V with Enable/Disable functionality. This part is discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

AX5MBF4-322.265625C

Abracon LLCIn Stock: 872AX5MBF4-322.265625C Datasheet

Current PartRFQ

AX5MCF1-322.265625C

Abracon LLCIn Stock: 1209AX5MCF1-322.265625C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AX5MBF4-322.265625C is based on the following critical parameters that must remain constant:

• Frequency: 322.265625 MHz (exact match required)
• Output Type: CML (exact match required)
• Function: Enable/Disable (exact match required)
• Package / Case: 8-SMD, No Lead (exact match required)
• Physical Dimensions: 5.00mm x 3.20mm (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Frequency Stability: ±20ppm (exact match required)

The AX5MCF1-322.265625C qualifies as a substitute part because it maintains all critical electrical and mechanical parameters. The primary difference is the supply voltage specification (1.8V versus 2.5V), which represents a design variation within the same product family and series.

Parameter Comparison

Engineering Selection Recommendations

Both parts are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements. The AX5MCF1-322.265625C is currently available with higher inventory (1128 Pcs) compared to the original part. Selection between these parts depends on system power supply architecture. The AX5MBF4-322.265625C operates at 2.5V, while the AX5MCF1-322.265625C operates at 1.8V. Both parts maintain identical frequency, output characteristics, and physical form factor, ensuring mechanical and electrical compatibility within their respective voltage domains.

Frequently Asked Questions (FAQ)

Q: Can the AX5MCF1-322.265625C directly replace the AX5MBF4-322.265625C?

A: Direct replacement is possible only if the system power supply can accommodate the 1.8V operating voltage. The substitute part maintains all critical electrical parameters (frequency, output type, stability) and physical dimensions. Voltage compatibility must be verified at the circuit design level.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts use the 8-SMD, No Lead package with dimensions of 5.00mm x 3.20mm and a maximum seated height of 1.50mm. PCB layout and footprints are interchangeable.

Q: What is the primary difference between these substitute parts?

A: The supply voltage differs: AX5MBF4-322.265625C operates at 2.5V, while AX5MCF1-322.265625C operates at 1.8V. All other electrical specifications, including frequency, output type, stability, and temperature range, are identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 Compliant, REACH Unaffected, and carry identical MSL ratings of 1 (Unlimited), ensuring equivalent compliance for regulated applications.

Q: What is the frequency stability specification for these oscillators?

A: Both parts maintain a frequency stability of ±20ppm across the operating temperature range of -40°C to 85°C.