AX5PAF1-1800.0000C Equivalent & Substitute Parts

Part Overview

The AX5PAF1-1800.0000C is a 1.8 GHz XO (Standard) LVPECL Oscillator operating at 3.3V with Enable/Disable functionality, manufactured by Abracon LLC as part of the ClearClock™ AX5 series. This component is discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing system support and procurement planning. The oscillator is housed in an 8-SMD, No Lead package with surface mount configuration suitable for high-frequency applications requiring LVPECL output signaling.

Substiute Parts

AX5PAF1-1800.0000C

Abracon LLCIn Stock: 983AX5PAF1-1800.0000C Datasheet

Current PartRFQ

AX5PBF1-1800.0000C

Abracon LLCIn Stock: 1104AX5PBF1-1800.0000C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AX5PAF1-1800.0000C is determined by strict alignment of the following critical parameters:

• Frequency: 1.8 GHz (exact match required)
• Output Type: LVPECL (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 footprint with 1.50mm max height (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Frequency Stability: ±20ppm (exact match required)
• Mounting Type: Surface Mount (exact match required)

The AX5PBF1-1800.0000C qualifies as a substitute part because it maintains identical specifications across all critical parameters listed above. The primary difference is the supply voltage specification: the substitute operates at 2.5V versus the original part's 3.3V. This voltage difference does not affect the oscillator's core functionality, frequency output, or package compatibility when the system design accommodates the lower supply voltage requirement.

Parameter Comparison

Engineering Selection Recommendations

Both the AX5PAF1-1800.0000C and AX5PBF1-1800.0000C are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The AX5PBF1-1800.0000C is currently available in inventory (1081 pcs), whereas the original AX5PAF1-1800.0000C is discontinued at DiGi Electronics.

Selection between these parts depends solely on system power supply architecture. If the design operates at 3.3V supply voltage, the original part specification must be maintained. If the design can accommodate 2.5V supply voltage or includes independent power rail management for the oscillator, the AX5PBF1-1800.0000C substitute provides equivalent functionality with current availability.

Both parts share identical frequency output (1.8 GHz), LVPECL signaling, Enable/Disable control, thermal operating range, and physical package specifications. The substitution is valid from a functional and mechanical standpoint when voltage requirements align with system design.

Frequently Asked Questions (FAQ)

Q: Can the AX5PBF1-1800.0000C replace the AX5PAF1-1800.0000C in all applications?

A: Functional and mechanical replacement is possible only if the system design accommodates 2.5V supply voltage for the oscillator. The frequency output, LVPECL signaling, package footprint, and thermal specifications are identical. Verify that your power distribution network can supply 2.5V to the oscillator independently or that the system operates at 2.5V supply voltage.

Q: Are there any package or PCB layout differences between these parts?

A: No. Both parts use identical 8-SMD, No Lead packaging with 5.00mm x 3.20mm footprint and 1.50mm maximum seated height. PCB layout and reflow profiles remain unchanged.

Q: What is the impact of the voltage difference on oscillator performance?

A: The frequency stability (±20ppm), frequency output (1.8 GHz), and LVPECL output characteristics remain identical across both supply voltage specifications. The voltage difference affects only the power supply requirement and current draw characteristics, not the oscillator's frequency or signal integrity.

Q: Are both parts compliant with current environmental standards?

A: Yes. Both the AX5PAF1-1800.0000C and AX5PBF1-1800.0000C are ROHS3 compliant and REACH unaffected.

Q: What is the moisture sensitivity level for these oscillators?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.