AX7MBF1-1800.0000C Equivalent & Substitute Parts

Part Overview

The AX7MBF1-1800.0000C is a 1.8 GHz XO (Standard) CML Oscillator manufactured by Abracon LLC as part of the ClearClock™ AX7 series. This surface mount crystal oscillator operates at 2.5V supply voltage with Enable/Disable functionality, housed in an 8-SMD, No Lead package measuring 7.00mm x 5.00mm. The part is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Substiute Parts

AX7MBF1-1800.0000C

Abracon LLCIn Stock: 958AX7MBF1-1800.0000C Datasheet

Current PartRFQ

AX7MCF1-1800.0000C

Abracon LLCIn Stock: 913AX7MCF1-1800.0000C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AX7MBF1-1800.0000C is determined by strict alignment of the following critical parameters:

• Frequency: 1.8 GHz (exact match required)
• Output Type: CML (exact match required)
• Package / Case: 8-SMD, No Lead (exact match required)
• Size / Dimension: 7.00mm x 5.00mm (exact match required)
• Function: Enable/Disable (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Frequency Stability: ±25ppm (exact match required)
• Mounting Type: Surface Mount (exact match required)

The AX7MCF1-1800.0000C qualifies as a substitute part because it maintains identical specifications across all critical parameters with one exception: the supply voltage is 1.8V instead of 2.5V. This voltage difference represents a functional variation that must be evaluated against circuit design requirements.

Parameter Comparison

Engineering Selection Recommendations

The AX7MCF1-1800.0000C is available as a substitute for the discontinued AX7MBF1-1800.0000C. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The primary consideration for substitution is the supply voltage differential: the substitute operates at 1.8V versus the original 2.5V specification. This voltage requirement must be verified against the circuit design to confirm compatibility with available power rails and signal integrity requirements. Both parts share identical mechanical packaging, thermal characteristics, and frequency stability specifications, supporting direct footprint compatibility on PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the AX7MCF1-1800.0000C replace the AX7MBF1-1800.0000C in all applications?

A: Direct substitution is possible only if the circuit design supports 1.8V supply voltage operation. The substitute part maintains all other electrical and mechanical specifications identically. Verify that the 1.8V supply rail is available and that signal levels remain within acceptable ranges for downstream components.

Q: Are the physical packages identical between these parts?

A: Yes. Both parts use the 8-SMD, No Lead package with dimensions of 7.00mm x 5.00mm and maximum seated height of 1.90mm. PCB footprints and assembly processes remain unchanged.

Q: What is the impact of the voltage difference on frequency stability?

A: Both parts specify ±25ppm frequency stability across the -40°C to 85°C operating temperature range. The voltage difference does not affect the stated frequency stability specification.

Q: Are there compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings of 1 (Unlimited). Regulatory and environmental compliance requirements are equivalent.

Q: What is the current consumption difference between these parts?

A: Both parts specify maximum supply current of 68mA during normal operation and 67mA during disable mode. Current consumption characteristics are identical.