AX7PAF4-1800.0000C Equivalent & Substitute Parts

Part Overview

The AX7PAF4-1800.0000C 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

AX7PAF4-1800.0000C

Abracon LLCIn Stock: 1104AX7PAF4-1800.0000C 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

Substitute parts for the AX7PAF4-1800.0000C are identified based on the following critical parameters that determine functional compatibility:

Mandatory Matching Parameters:

• Frequency: 1.8 GHz
• Output Type: LVPECL
• Package / Case: 8-SMD, No Lead
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C ~ 85°C
• Frequency Stability: ±25ppm

Allowable Variation Parameters:

• Voltage - Supply: 2.5V or 3.3V (both supported within the ClearClock™ AX7 series design envelope)
• Current - Supply (Max): 94mA (consistent across variants)

The substitute parts listed maintain identical mechanical form factor, frequency output, and thermal performance while offering alternative supply voltage options within the same product family.

Parameter Comparison

Engineering Selection Recommendations

AX7PBF1-1800.0000C (MFR Recommended Substitute): This part is designated as the manufacturer-recommended substitute. It maintains all critical electrical and mechanical parameters identical to the main part with the exception of supply voltage (2.5V vs. 3.3V). Selection of this part requires circuit-level compatibility with 2.5V supply rails. Current inventory: 1047 Pcs. ROHS3 compliant and MSL 1 rated.

AX7PAF1-1800.0000C (Parametric Equivalent): This part provides direct parametric equivalence with identical supply voltage (3.3V) and all other specifications matching the main part. This option eliminates supply voltage considerations in circuit redesign. Current inventory: 1112 Pcs. ROHS3 compliant and MSL 1 rated.

Both substitute parts are from the same manufacturer and product series, ensuring design continuity and compliance consistency.

Frequently Asked Questions (FAQ)

Q: Can AX7PBF1-1800.0000C be used as a direct replacement for AX7PAF4-1800.0000C?

A: AX7PBF1-1800.0000C is electrically compatible if your circuit design supports 2.5V supply operation. The frequency, output type, package, and thermal specifications are identical. Circuit redesign may be required if the original design is constrained to 3.3V supply rails.

Q: What is the difference between the MFR Recommended and Parametric Equivalent substitutes?

A: The MFR Recommended substitute (AX7PBF1-1800.0000C) operates at 2.5V supply, while the Parametric Equivalent (AX7PAF1-1800.0000C) operates at 3.3V supply, matching the original part. Both maintain identical frequency, output type, and package specifications.

Q: Are all three parts mechanically interchangeable?

A: Yes. All three parts share identical package type (8-SMD, No Lead), dimensions (7.00mm x 5.00mm), and height (1.90mm maximum seated height). PCB layout and footprint remain unchanged across all variants.

Q: Do the substitute parts have the same compliance certifications?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. ECCN and HTSUS classifications are identical.

Q: What is the frequency stability specification for these oscillators?

A: All three parts maintain ±25ppm frequency stability across the -40°C to 85°C operating temperature range.