AX7DBF4-156.2500C Equivalent & Substitute Parts

Part Overview

The AX7DBF4-156.2500C is a 156.25 MHz XO (Standard) LVDS 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. The part is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

AX7DBF4-156.2500C

Abracon LLCIn Stock: 804AX7DBF4-156.2500C Datasheet

Current PartRFQ

AX7DBF1-156.2500C

Abracon LLCIn Stock: 775AX7DBF1-156.2500C Datasheet

Parametric EquivalentRFQ

AX7DBF3-156.2500C

Abracon LLCIn Stock: 1196AX7DBF3-156.2500C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AX7DBF4-156.2500C are determined by strict equivalence across the following critical parameters:

• Frequency: 156.25 MHz (exact match required)
• Output: LVDS (exact match required)
• Supply Voltage: 2.5V (exact match required)
• Function: Enable/Disable (exact match required)
• Frequency Stability: ±25ppm (exact match required)
• Operating Temperature: -40°C ~ 85°C (exact match required)
• Maximum Supply Current: 70mA (exact match required)
• Package Type: 8-SMD, No Lead (exact match required)
• Package Dimensions: 7.00mm x 5.00mm x 1.90mm max height (exact match required)

All identified substitute parts maintain identical electrical and mechanical specifications, ensuring direct interchangeability in circuit designs without modification to PCB layout or schematic connections.

Parameter Comparison

Engineering Selection Recommendations

All three parts—AX7DBF4-156.2500C, AX7DBF1-156.2500C, and AX7DBF3-156.2500C—are electrically and mechanically equivalent and carry identical compliance certifications (ROHS3, REACH Unaffected, EAR99). Selection among these parts should be based on inventory availability and procurement lead times. The AX7DBF3-156.2500C currently has the highest inventory level at 1090 pieces, followed by AX7DBF4-156.2500C at 723 pieces and AX7DBF1-156.2500C at 683 pieces. All parts maintain the same moisture sensitivity level (MSL 1) and are suitable for unlimited shelf life storage.

Frequently Asked Questions (FAQ)

Q: Can AX7DBF1-156.2500C or AX7DBF3-156.2500C be used as direct replacements for AX7DBF4-156.2500C?

A: Yes. Both parts are parametric equivalents with identical electrical specifications (156.25 MHz, LVDS output, 2.5V supply, ±25ppm stability, -40°C to 85°C operating range) and mechanical specifications (8-SMD No Lead package, 7.00mm x 5.00mm x 1.90mm max height). No circuit modifications or PCB layout changes are required.

Q: Are there any differences in compliance or certifications between these parts?

A: No. All three parts carry identical compliance status: ROHS3 Compliant, REACH Unaffected, and EAR99 classification. Moisture sensitivity level is MSL 1 (Unlimited) for all parts.

Q: What is the primary reason these parts are listed as discontinued?

A: All three parts are discontinued at DiGi Electronics. However, new original inventory remains available from authorized distributors. The discontinuation status does not affect the technical equivalence or interchangeability of these parts.

Q: Should I consider inventory levels when selecting a substitute?

A: Inventory availability is a practical consideration for procurement. AX7DBF3-156.2500C has the highest current stock at 1090 pieces, which may provide better lead time assurance compared to the other variants.

Q: Are the supply current specifications identical across all three parts?

A: Yes. Maximum supply current is 70mA for all parts, with maximum disable current at 65mA. Current consumption characteristics are identical.