AX7PAF3-1800.0000C Equivalent & Substitute Parts

Part Overview

The AX7PAF3-1800.0000C is a 1.8 GHz XO (Standard) LVPECL Oscillator manufactured by Abracon LLC as part of the ClearClock™ AX7 series. This surface mount crystal oscillator operates at 3.3V with enable/disable functionality and is housed in an 8-SMD, No Lead package. The part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

AX7PAF3-1800.0000C

Abracon LLCIn Stock: 1086AX7PAF3-1800.0000C Datasheet

Current PartRFQ

AX7PBF1-1800.0000C

Abracon LLCIn Stock: 1064AX7PBF1-1800.0000C Datasheet

MFR RecommendedRFQ

AX7PAF1-1800.0000C

Abracon LLCIn Stock: 1208AX7PAF1-1800.0000C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AX7PAF3-1800.0000C is determined by the following critical parameters:

• Frequency: 1.8 GHz (exact match required)
• Output Type: LVPECL (exact match required)
• Package / Case: 8-SMD, No Lead (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Frequency Stability: ±25ppm (exact match required)
• Function: Enable/Disable (exact match required)
• Supply Voltage: 3.3V (primary requirement for direct replacement)

Two substitute parts are identified:

1. AX7PBF1-1800.0000C (MFR Recommended): Differs in supply voltage (2.5V vs. 3.3V). This part is suitable only if the application circuit can operate at 2.5V supply.

2. AX7PAF1-1800.0000C (Parametric Equivalent): Matches all critical parameters including 3.3V supply voltage. This is the direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

AX7PAF1-1800.0000C is the direct parametric equivalent for the AX7PAF3-1800.0000C. Both parts are ROHS3 compliant, carry MSL 1 rating, and match across all critical electrical and mechanical parameters including the 3.3V supply voltage requirement. This part provides seamless substitution without circuit modification.

AX7PBF1-1800.0000C is the manufacturer-recommended alternative but operates at 2.5V supply voltage. Selection of this part requires confirmation that the application circuit design supports 2.5V operation. This part is suitable only for designs with flexible supply voltage requirements or where 2.5V operation has been validated.

Both substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating, consistent with the original part's environmental and regulatory status.

Frequently Asked Questions (FAQ)

Q: Can AX7PBF1-1800.0000C be used as a direct drop-in replacement for AX7PAF3-1800.0000C?

A: No. The AX7PBF1-1800.0000C operates at 2.5V supply voltage, while the AX7PAF3-1800.0000C requires 3.3V. Direct substitution is possible only if the application circuit is designed to operate at 2.5V. The AX7PAF1-1800.0000C is the direct drop-in replacement.

Q: What is the difference between AX7PAF1-1800.0000C and AX7PAF3-1800.0000C?

A: Both parts are parametrically equivalent across all specified electrical and mechanical parameters. The difference in part number designation does not reflect differences in the provided technical specifications.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 8-SMD, No Lead package with identical dimensions (0.276" L x 0.197" W, 7.00mm x 5.00mm) and height (0.075" / 1.90mm maximum). Pin compatibility is confirmed for package-level substitution.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. Both AX7PBF1-1800.0000C and AX7PAF1-1800.0000C are ROHS3 compliant with MSL 1 rating, matching the compliance profile of the original AX7PAF3-1800.0000C.

Q: What is the primary consideration when selecting between the two substitute parts?

A: Supply voltage is the determining factor. If the application requires 3.3V operation, select AX7PAF1-1800.0000C. If 2.5V operation is acceptable or required, AX7PBF1-1800.0000C is available. All other electrical and mechanical parameters are identical.