AX7MBF4-1800.0000C Equivalent & Substitute Parts

Part Overview

The AX7MBF4-1800.0000C 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 and is housed in an 8-SMD, No Lead package. The part is discontinued at DiGi Electronics, making identification of equivalent substitute components essential for ongoing design support and procurement.

Substiute Parts

AX7MBF4-1800.0000C

Abracon LLCIn Stock: 1146AX7MBF4-1800.0000C Datasheet

Current PartRFQ

AX7MCF1-1800.0000C

Abracon LLCIn Stock: 913AX7MCF1-1800.0000C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AX7MBF4-1800.0000C must maintain compatibility across 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)
• Physical Dimensions: 7.00mm x 5.00mm footprint with 1.90mm maximum seated height (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)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The primary variable parameter allowing substitution is Supply Voltage, which may differ while maintaining full functional and electrical compatibility within the ClearClock™ AX7 series architecture.

Parameter Comparison

Engineering Selection Recommendations

The AX7MCF1-1800.0000C serves as a direct substitute for the discontinued AX7MBF4-1800.0000C. Both parts maintain identical electrical performance specifications, physical package dimensions, and regulatory compliance status. The primary distinction is the supply voltage requirement: the substitute operates at 1.8V versus the original 2.5V specification.

Selection of the substitute part is appropriate for applications where 1.8V supply voltage is available or preferred. Both parts carry ROHS3 compliance and MSL 1 rating, ensuring equivalent environmental and handling characteristics. Current consumption specifications remain constant across both variants, supporting direct circuit-level substitution where voltage supply compatibility exists.

Frequently Asked Questions (FAQ)

Q: Can the AX7MCF1-1800.0000C replace the AX7MBF4-1800.0000C in existing designs?

A: Direct substitution is possible only if the circuit design supports 1.8V supply voltage operation. The substitute part maintains identical frequency, output type, package dimensions, and performance specifications. Voltage supply compatibility must be verified before implementation.

Q: Are the physical footprints identical between these parts?

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

Q: What is the impact of the voltage difference on circuit design?

A: The supply voltage difference (2.5V versus 1.8V) affects only the power supply rail connection. All other electrical characteristics, including frequency stability, output impedance, and current consumption, remain equivalent. Circuit redesign is limited to voltage supply considerations.

Q: Are both parts subject to the same handling and storage requirements?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating identical moisture sensitivity and storage requirements. Handling procedures, reflow profiles, and environmental storage conditions are equivalent.

Q: What is the current availability status of these parts?

A: The AX7MBF4-1800.0000C is discontinued at DiGi Electronics. The AX7MCF1-1800.0000C is available with 814 pieces in stock as new original inventory.