AX7DAF2-1800.0000C Equivalent & Substitute Parts

Part Overview

The AX7DAF2-1800.0000C is a 1.8 GHz XO (Standard) LVDS 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, designed for applications requiring stable 1.8 GHz frequency output with LVDS signaling. The part is discontinued at DiGi Electronics, necessitating identification of compatible substitute components that maintain electrical and mechanical compatibility with existing designs.

Substiute Parts

AX7DAF2-1800.0000C

Abracon LLCIn Stock: 1029AX7DAF2-1800.0000C Datasheet

Current PartRFQ

AX7DBF1-1800.0000C

Abracon LLCIn Stock: 1097AX7DBF1-1800.0000C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AX7DAF2-1800.0000C is determined by the following critical parameters:

• Frequency: 1.8 GHz (exact match required)
• Output Type: LVDS (exact match required)
• Function: Enable/Disable capability (exact match required)
• Package Type: 8-SMD, No Lead (exact match required)
• Package Dimensions: 7.00mm x 5.00mm footprint (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match or wider range acceptable)
• Frequency Stability: ±25ppm (exact match or better acceptable)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The AX7DBF1-1800.0000C qualifies as a substitute based on matching all critical electrical and mechanical parameters. The primary difference is the supply voltage specification (2.5V versus 3.3V), which represents a design variation within the same product family and series.

Parameter Comparison

Engineering Selection Recommendations

Both the AX7DAF2-1800.0000C and AX7DBF1-1800.0000C are discontinued at DiGi Electronics. Selection between these parts must be based on circuit design requirements, specifically the power supply voltage available in the application. The AX7DBF1-1800.0000C operates at 2.5V, while the AX7DAF2-1800.0000C operates at 3.3V. Both parts maintain identical mechanical compatibility, frequency output, LVDS signaling, and regulatory compliance (ROHS3 Compliant, REACH Unaffected). Current availability should be verified with authorized distributors, as both parts show discontinued status at primary channels.

Frequently Asked Questions (FAQ)

Q: Can the AX7DBF1-1800.0000C directly replace the AX7DAF2-1800.0000C?

A: Direct replacement is possible only if the circuit design supports 2.5V operation. The substitute part operates at a lower supply voltage than the original. If the application requires 3.3V supply voltage, the AX7DBF1-1800.0000C is not suitable without circuit modification.

Q: Are the package dimensions identical between these parts?

A: Yes. Both parts use the same 8-SMD, No Lead package with dimensions of 7.00mm x 5.00mm and maximum seated height of 1.90mm. PCB footprints are mechanically compatible.

Q: Do both parts have the same frequency stability?

A: Yes. Both the AX7DAF2-1800.0000C and AX7DBF1-1800.0000C specify ±25ppm frequency stability across the -40°C ~ 85°C operating temperature range.

Q: What is the significance of the enable/disable function?

A: Both parts include enable/disable functionality, allowing the oscillator output to be controlled via a logic signal. This feature is identical in both the main part and substitute.

Q: Are there regulatory compliance differences?

A: No. Both parts are ROHS3 Compliant, REACH Unaffected, and carry identical regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001).

Q: What is the maximum supply current for these oscillators?

A: Both parts specify a maximum supply current of 70mA during normal operation and 65mA during disable mode.