AX7DAF4-1800.0000C Equivalent & Substitute Parts

Part Overview

The AX7DAF4-1800.0000C is a 1.8 GHz XO (Standard) LVDS Oscillator manufactured by Abracon LLC as part of the ClearClock™ AX7 series. This component operates at 3.3V supply voltage with Enable/Disable functionality, housed in an 8-SMD, No Lead package. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

AX7DAF4-1800.0000C

Abracon LLCIn Stock: 972AX7DAF4-1800.0000C Datasheet

Current PartRFQ

AX7DBF1-1800.0000C

Abracon LLCIn Stock: 1097AX7DBF1-1800.0000C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AX7DAF4-1800.0000C is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 1.8 GHz
• Output Type: LVDS
• Function: Enable/Disable
• Package / Case: 8-SMD, No Lead
• Package Dimensions: 0.276" L x 0.197" W (7.00mm x 5.00mm)
• Maximum Seated Height: 0.075" (1.90mm)
• Operating Temperature Range: -40°C ~ 85°C
• Frequency Stability: ±25ppm

Flexible Parameters (Allowable Variation):

• Supply Voltage: Alternative voltage ratings within the same series are acceptable if the design permits voltage adjustment or if the substitute operates within the application's voltage tolerance
• Maximum Supply Current: Substitutes with equal or lower current draw are acceptable

The AX7DBF1-1800.0000C qualifies as a substitute based on matching all mandatory parameters while differing only in supply voltage (2.5V vs. 3.3V), which represents a design variation within the ClearClock™ AX7 series.

Parameter Comparison

Engineering Selection Recommendations

The AX7DBF1-1800.0000C serves as a direct substitute for the discontinued AX7DAF4-1800.0000C when supply voltage compatibility is confirmed in the application circuit. Both parts maintain identical ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The substitute part is currently in stock (1009 pcs available) compared to the main part's discontinued status, providing immediate component availability. Selection between these parts depends solely on whether the application's power supply and signal conditioning circuits support 2.5V operation or can be modified to accommodate this voltage level. No additional design modifications are required for mechanical integration, thermal management, or signal integrity, as all physical and electrical performance parameters remain constant.

Frequently Asked Questions (FAQ)

Q: Can the AX7DBF1-1800.0000C replace the AX7DAF4-1800.0000C in an existing design?

A: Substitution is possible if the application circuit supports 2.5V supply voltage. The substitute part matches all frequency, output type, package, and thermal specifications. If the original design requires 3.3V operation, circuit modification is necessary.

Q: Are there any mechanical compatibility issues between these parts?

A: No. Both parts use identical 8-SMD, No Lead packaging with matching dimensions (7.00mm x 5.00mm) and maximum seated height (1.90mm). PCB footprints and assembly processes remain unchanged.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the AX7DAF4-1800.0000C and AX7DBF1-1800.0000C are ROHS3 compliant and REACH unaffected, maintaining identical regulatory status.

Q: What is the primary difference between these two parts?

A: The sole electrical difference is supply voltage: the main part operates at 3.3V while the substitute operates at 2.5V. All other parameters, including frequency (1.8 GHz), output type (LVDS), stability (±25ppm), and current draw (70mA maximum), are identical.

Q: Is the substitute part currently available?

A: Yes. The AX7DBF1-1800.0000C has 1009 pcs in stock as new original inventory, whereas the main part is discontinued at DiGi Electronics.