AX7MBF3-425.0000C Equivalent & Substitute Parts

Part Overview

The AX7MBF3-425.0000C is a 425 MHz XO (Standard) CML Oscillator manufactured by Abracon LLC, 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. The part is discontinued at DiGi Electronics, making identification of equivalent and substitute components essential for ongoing design support and production continuity.

Substiute Parts

AX7MBF3-425.0000C

Abracon LLCIn Stock: 798AX7MBF3-425.0000C Datasheet

Current PartRFQ

AX7MCF1-425.0000C

Abracon LLCIn Stock: 1227AX7MCF1-425.0000C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AX7MBF3-425.0000C is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 425 MHz (exact match required)
• Output Type: CML (electrical interface compatibility)
• Package / Case: 8-SMD, No Lead (mechanical and thermal compatibility)
• Size / Dimension: 0.276" L x 0.197" W (7.00mm x 5.00mm) (PCB layout compatibility)
• Height - Seated (Max): 0.075" (1.90mm) (assembly clearance)
• Operating Temperature Range: -40°C ~ 85°C (environmental specification)
• Frequency Stability: ±25ppm (timing accuracy requirement)
• Function: Enable/Disable (control interface requirement)
• Base Resonator: Crystal (oscillator type)
• Type: XO (Standard) (oscillator classification)

Allowable Variation Parameters:

• Supply Voltage: May differ from 2.5V if the substitute operates within the system's voltage supply capability
• Current - Supply (Max): May vary within acceptable power budget limits
• Current - Supply (Disable) (Max): May vary within acceptable power budget limits

Parameter Comparison

Engineering Selection Recommendations

The AX7MCF1-425.0000C is a qualified substitute for the AX7MBF3-425.0000C based on identical mechanical, thermal, and electrical output characteristics. Both parts are manufactured by Abracon LLC within the ClearClock™ AX7 series and maintain the same 425 MHz frequency, CML output, ±25ppm stability, and 8-SMD package footprint.

The primary difference is the supply voltage: the substitute operates at 1.8V compared to the main part's 2.5V. This substitution is valid only if the system design accommodates 1.8V operation. Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring equivalent environmental and regulatory standing.

Current consumption specifications are identical between both parts, indicating compatible power budget requirements at their respective voltage levels.

Frequently Asked Questions (FAQ)

Q: Can the AX7MCF1-425.0000C replace the AX7MBF3-425.0000C in my design?

A: Yes, provided your system power supply can accommodate 1.8V operation. The substitute maintains identical frequency, output type (CML), package dimensions, and thermal characteristics. Verify that your circuit design does not require 2.5V specifically.

Q: Are the package dimensions identical between these parts?

A: Yes. Both parts use the 8-SMD, No Lead package with dimensions of 0.276" L x 0.197" W (7.00mm x 5.00mm) and maximum seated height of 0.075" (1.90mm). PCB layout and assembly clearances are identical.

Q: What is the key difference between these oscillators?

A: The supply voltage differs: AX7MBF3-425.0000C operates at 2.5V, while AX7MCF1-425.0000C operates at 1.8V. All other electrical and mechanical specifications are equivalent.

Q: Do both parts have the same frequency stability?

A: Yes. Both parts maintain ±25ppm frequency stability across the -40°C ~ 85°C operating temperature range.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the current consumption difference?

A: Current consumption specifications are identical: 68mA maximum supply current and 67mA maximum disable current for both parts.