AX7MBF1-2100.0000C Equivalent & Substitute Parts

Part Overview

The AX7MBF1-2100.0000C is a 2.1 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 parts essential for ongoing design support and procurement.

Substiute Parts

AX7MBF1-2100.0000C

Abracon LLCIn Stock: 1243AX7MBF1-2100.0000C Datasheet

Current PartRFQ

AX7MCF1-2100.0000C

Abracon LLCIn Stock: 996AX7MCF1-2100.0000C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AX7MBF1-2100.0000C is determined by the following critical parameters that must remain constant:

• Frequency: 2.1 GHz (exact match required)
• Output Type: CML (exact match required)
• Package / Case: 8-SMD, No Lead (exact match required)
• Physical Dimensions: 0.276" L x 0.197" W, Height 0.075" max (exact match required)
• Frequency Stability: ±25ppm (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Function: Enable/Disable (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The primary variable parameter allowing substitution is Voltage - Supply, which differs between the main part (2.5V) and the identified substitute part (1.8V). This voltage difference is the sole distinguishing factor between electrically equivalent parts within the ClearClock™ AX7 series.

Parameter Comparison

Engineering Selection Recommendations

Both the AX7MBF1-2100.0000C and AX7MCF1-2100.0000C are discontinued at DiGi Electronics. Selection between these parts depends on circuit power supply architecture:

• AX7MBF1-2100.0000C (2.5V): Select this part if your design incorporates a 2.5V supply rail dedicated to oscillator operation.
• AX7MCF1-2100.0000C (1.8V): Select this part if your design incorporates a 1.8V supply rail or if power efficiency at lower voltage operation is required.

Both parts maintain identical frequency stability (±25ppm), operating temperature range (-40°C ~ 85°C), and current consumption specifications (68mA max). Both are ROHS3 Compliant with MSL 1 (Unlimited) rating, ensuring equivalent environmental and regulatory compliance. Physical footprint and package dimensions are identical, allowing direct PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can AX7MCF1-2100.0000C replace AX7MBF1-2100.0000C in an existing design?

A: Direct replacement is possible only if your circuit power supply can accommodate 1.8V operation instead of 2.5V. The parts are electrically equivalent at their respective supply voltages. Verify that all downstream CML output signal levels remain within acceptable logic thresholds for your receiving circuitry when operating at the lower voltage.

Q: Are the physical packages identical?

A: Yes. Both parts use 8-SMD, No Lead packaging with identical dimensions (0.276" L x 0.197" W, 0.075" max height). PCB footprints are interchangeable.

Q: What is the frequency stability difference between these parts?

A: Both parts specify ±25ppm frequency stability. There is no difference in frequency accuracy or stability performance.

Q: Do both parts support Enable/Disable functionality?

A: Yes. Both AX7MBF1-2100.0000C and AX7MCF1-2100.0000C include Enable/Disable control functionality.

Q: Are there compliance or certification differences?

A: No. Both parts are ROHS3 Compliant with MSL 1 (Unlimited) rating. Regulatory compliance is equivalent.

Q: What is the primary technical difference between these substitute parts?

A: The sole technical difference is supply voltage: AX7MBF1-2100.0000C operates at 2.5V, while AX7MCF1-2100.0000C operates at 1.8V. All other electrical and mechanical specifications are identical.