AX5PAF4-1800.0000C Equivalent & Substitute Parts

Part Overview

The AX5PAF4-1800.0000C is a 1.8 GHz XO (Standard) LVPECL Oscillator manufactured by Abracon LLC, operating at 3.3V supply voltage 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

AX5PAF4-1800.0000C

Abracon LLCIn Stock: 1112AX5PAF4-1800.0000C Datasheet

Current PartRFQ

AX5PBF1-1800.0000C

Abracon LLCIn Stock: 1104AX5PBF1-1800.0000C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX5PAF4-1800.0000C is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 1.8 GHz
• Output Type: LVPECL
• Function: Enable/Disable
• Package / Case: 8-SMD, No Lead
• Size / Dimension: 5.00mm x 3.20mm
• Height - Seated (Max): 1.50mm
• Operating Temperature Range: -40°C ~ 85°C
• Frequency Stability: ±20ppm

Allowable Variation Parameters:

• Voltage - Supply: Substitute parts may operate at different supply voltages (2.5V, 3.3V, or other compatible levels) provided the system design accommodates the voltage difference
• Current - Supply (Max): Variations within the same series are acceptable if system power budget permits

The AX5PBF1-1800.0000C qualifies as a substitute based on matching all mandatory parameters while operating at 2.5V supply voltage instead of 3.3V.

Parameter Comparison

Engineering Selection Recommendations

The AX5PBF1-1800.0000C serves as the manufacturer-recommended substitute for the discontinued AX5PAF4-1800.0000C. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment across applications.

The primary design consideration is the supply voltage difference: the substitute operates at 2.5V versus the original 3.3V specification. System designs must accommodate this voltage requirement through appropriate power supply configuration or voltage regulation. The identical package footprint, frequency output, and thermal operating range ensure mechanical and functional compatibility when voltage requirements are met.

Both parts share identical frequency stability (±20ppm), maximum supply current (110mA), and MSL rating (1 - Unlimited), supporting equivalent performance in timing-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the AX5PBF1-1800.0000C directly replace the AX5PAF4-1800.0000C in existing designs?

A: Direct replacement requires system-level voltage compatibility. The substitute operates at 2.5V supply versus the original 3.3V. If your design uses 3.3V power rails, voltage regulation or power supply modification is necessary. The identical package footprint and pinout support direct PCB placement.

Q: Are the frequency and output characteristics identical between these parts?

A: Yes. Both parts deliver 1.8 GHz LVPECL output with ±20ppm frequency stability, Enable/Disable functionality, and identical operating temperature range (-40°C ~ 85°C). Output signal characteristics are equivalent.

Q: What is the significance of the 8-SMD, No Lead package?

A: This package type indicates surface mount assembly without through-hole leads. Both the main part and substitute use this identical package configuration (5.00mm x 3.20mm, 1.50mm max height), ensuring compatibility with existing PCB layouts and reflow soldering processes.

Q: Do compliance certifications differ between the main part and substitute?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical MSL rating (1 - Unlimited), supporting equivalent use in regulated applications.

Q: What is the primary design constraint when selecting the substitute?

A: Supply voltage is the critical design parameter. The substitute requires 2.5V operation. Confirm your system power architecture supports this voltage level before implementation.