AX5PAF3-1800.0000C Equivalent & Substitute Parts

Part Overview

The AX5PAF3-1800.0000C is a 1.8 GHz XO (Standard) LVPECL Oscillator manufactured by Abracon LLC, operating at 3.3V with Enable/Disable functionality. This component is packaged in an 8-SMD, No Lead configuration with a compact footprint of 5.00mm x 3.20mm. The part is discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement.

Substiute Parts

AX5PAF3-1800.0000C

Abracon LLCIn Stock: 1002AX5PAF3-1800.0000C Datasheet

Current PartRFQ

AX5PBF1-1800.0000C

Abracon LLCIn Stock: 1104AX5PBF1-1800.0000C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AX5PAF3-1800.0000C is determined by the following critical parameters that must remain constant or compatible:

Fixed Parameters (Must Match):

• Frequency: 1.8 GHz
• Output Type: LVPECL
• Function: Enable/Disable
• Package / Case: 8-SMD, No Lead
• Physical Dimensions: 5.00mm x 3.20mm
• Height - Seated (Max): 1.50mm
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 85°C
• Frequency Stability: ±20ppm
• Series: ClearClock™ AX5

Variable Parameter (Allowable Difference):

• Voltage - Supply: The substitute part AX5PBF1-1800.0000C operates at 2.5V instead of 3.3V. This represents a lower supply voltage variant within the same product family and is acceptable as a substitute when the application circuit supports 2.5V operation.

The AX5PBF1-1800.0000C maintains electrical and mechanical compatibility across all other critical parameters, making it a valid equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The AX5PBF1-1800.0000C serves as the manufacturer-recommended substitute for the discontinued AX5PAF3-1800.0000C. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment across applications.

The primary consideration for substitution is supply voltage compatibility. The AX5PBF1-1800.0000C operates at 2.5V, compared to the original part's 3.3V specification. Selection of this substitute requires confirmation that the application circuit design supports 2.5V operation and that power supply infrastructure can accommodate this lower voltage requirement.

All other electrical and mechanical parameters remain identical, including frequency output, LVPECL signal integrity, Enable/Disable functionality, thermal operating range, and physical package dimensions. This ensures direct compatibility at the component level when voltage requirements are satisfied.

Frequently Asked Questions (FAQ)

Q: Can the AX5PBF1-1800.0000C be used as a direct replacement for the AX5PAF3-1800.0000C?

A: The AX5PBF1-1800.0000C is electrically and mechanically compatible with the AX5PAF3-1800.0000C provided that the application circuit supports 2.5V operation. The substitute part operates at 2.5V supply voltage instead of 3.3V. If the circuit design requires 3.3V operation, this substitute is not suitable.

Q: What are the key differences between these two parts?

A: The primary difference is supply voltage: AX5PAF3-1800.0000C operates at 3.3V, while AX5PBF1-1800.0000C operates at 2.5V. All other parameters—frequency, output type, package, dimensions, and performance specifications—are identical.

Q: Are both parts in the same package?

A: Yes. Both parts use the 8-SMD, No Lead package with identical physical dimensions of 5.00mm x 3.20mm and maximum seated height of 1.50mm. They are pin-compatible and have identical PCB footprints.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the AX5PAF3-1800.0000C and AX5PBF1-1800.0000C are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the frequency stability specification for both parts?

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

Q: Can I use the AX5PBF1-1800.0000C if my circuit is designed for 3.3V?

A: No. The substitute part is rated for 2.5V operation. Using it in a 3.3V circuit may result in component damage or failure. Voltage compatibility must be confirmed before substitution.