7C-125.000MBA-T CMOS Oscillator Equivalent & Substitute Parts

Part Overview

The 7C-125.000MBA-T is a 125 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This surface mount crystal oscillator operates at 3.3V with enable/disable functionality, designed for applications requiring stable frequency generation in a compact 4-SMD, No Lead package. The part is currently in active production status with 802 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

7C-125.000MBA-T

TXC CORPORATIONIn Stock: 8677C-125.000MBA-T Datasheet

Current PartRFQ

SXO53C3C171-125.000M

Suntsu Electronics, Inc.In Stock: 2086SXO53C3C171-125.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7C-125.000MBA-T are identified based on strict electrical and mechanical parameter matching. The substitution logic is based on the following criteria:

Critical Matching Parameters:

• Frequency: 125 MHz (exact match required)
• Output Type: CMOS (logic family compatibility)
• Supply Voltage: 3.3V (system voltage compatibility)
• Function: Enable/Disable (functional feature match)
• Frequency Stability: ±25ppm (timing accuracy specification)
• Operating Temperature Range: -10°C ~ 70°C (environmental compatibility)
• Package / Case: 4-SMD, No Lead (footprint compatibility)
• Physical Dimensions: 5.00mm x 3.20mm (PCB layout compatibility)
• Height - Seated (Max): 1.40mm (assembly clearance compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)

Acceptable Variation Parameters:

• Current - Supply (Max): Substitute parts with higher maximum current ratings remain compatible, as they represent enhanced capability within the same functional class
• RoHS Status: Both RoHS Compliant and ROHS3 Compliant designations satisfy regulatory requirements

The SXO53C3C171-125.000M from Suntsu Electronics, Inc. meets all critical matching parameters and is therefore classified as a direct equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 7C-125.000MBA-T

The 7C-125.000MBA-T remains the primary specification when available. This part is manufactured by TXC CORPORATION, carries active product status, and is RoHS Compliant. Current inventory of 802 units supports immediate procurement requirements.

Substitute Part: SXO53C3C171-125.000M

The SXO53C3C171-125.000M from Suntsu Electronics, Inc. is a direct electrical and mechanical equivalent. This substitute part:

• Matches all critical electrical parameters (frequency, voltage, output type, stability, temperature range)
• Matches all critical mechanical parameters (package, dimensions, height, mounting type)
• Maintains functional equivalence (enable/disable capability)
• Carries active product status
• Meets regulatory compliance (ROHS3 Compliant)
• Provides higher maximum supply current (50mA vs. 30mA), representing enhanced capability

The higher maximum supply current of the Suntsu part does not create incompatibility; it indicates the substitute can deliver additional current capacity within the same functional specification. Selection between these parts is based on availability, lead time, cost, and supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can the SXO53C3C171-125.000M replace the 7C-125.000MBA-T in existing designs?

A: Yes. Both parts are 125 MHz CMOS oscillators with 3.3V supply, enable/disable function, ±25ppm frequency stability, and identical physical dimensions (5.00mm x 3.20mm x 1.40mm height). The 4-SMD, No Lead package footprint is identical, allowing direct PCB substitution without layout modification.

Q: What is the difference in maximum supply current between these parts?

A: The 7C-125.000MBA-T specifies 30mA maximum supply current, while the SXO53C3C171-125.000M specifies 50mA maximum supply current. Both parts operate within the same 3.3V supply voltage. The higher rating on the Suntsu part indicates greater current delivery capability and does not affect compatibility with circuits designed for the TXC part.

Q: Are both parts RoHS compliant?

A: Yes. The 7C-125.000MBA-T carries RoHS Compliant designation. The SXO53C3C171-125.000M carries ROHS3 Compliant designation. Both meet regulatory requirements for lead-free and restricted substance compliance.

Q: Do these parts have identical frequency stability?

A: Yes. Both parts specify ±25ppm frequency stability across the -10°C ~ 70°C operating temperature range. Timing accuracy is equivalent between the two parts.

Q: Can these parts be used interchangeably in production?

A: Yes, provided the circuit design accommodates the maximum supply current specification of the selected part. The SXO53C3C171-125.000M with 50mA maximum current is compatible with any circuit designed for the 7C-125.000MBA-T (30mA maximum). No circuit redesign is required for substitution.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -10°C ~ 70°C. This temperature range is identical and must be verified against application requirements before part selection.

Q: Are the package dimensions identical?

A: Yes. Both parts use 4-SMD, No Lead packaging with dimensions of 5.00mm length x 3.20mm width and maximum seated height of 1.40mm. PCB footprints are identical.