7C-40.000MCA-T CMOS Oscillator Equivalent & Substitute Parts

Part Overview

The 7C-40.000MCA-T is a 40 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This surface mount crystal oscillator operates at 2.5V with Enable/Disable functionality, designed for applications requiring precise frequency generation in a compact 4-SMD, No Lead package. The part is Active status and RoHS Compliant. Substitute parts are identified when equivalent electrical and mechanical specifications are maintained across the allowed parameter set, enabling component procurement flexibility while preserving circuit performance.

Substiute Parts

7C-40.000MCA-T

TXC CORPORATIONIn Stock: 7147C-40.000MCA-T Datasheet

Current PartRFQ

7C-40.000MCB-T

TXC CORPORATIONIn Stock: 29657C-40.000MCB-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7C-40.000MCA-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 40 MHz
• Output Type: CMOS
• Supply Voltage: 2.5V
• Function: Enable/Disable
• Operating Temperature Range: -10°C ~ 70°C
• Maximum Supply Current: 30mA
• Package Type: 4-SMD, No Lead
• Physical Dimensions: 5.00mm x 3.20mm x 1.40mm (Max)
• Mounting Type: Surface Mount
• RoHS Compliance: Compliant
• MSL Rating: 1 (Unlimited)

Allowable Variation:

• Frequency Stability: Tolerance specifications may vary within acceptable engineering margins for the application

The substitute part 7C-40.000MCB-T maintains all mandatory parameters. The primary difference is packaging format (Tape & Reel vs. standard packaging) and frequency stability specification (±50ppm vs. ±25ppm).

Parameter Comparison

Engineering Selection Recommendations

7C-40.000MCA-T Selection Criteria:

• Primary choice when standard packaging format is required
• Suitable for applications with tighter frequency stability requirements (±25ppm)
• Appropriate for lower-volume procurement or mixed component sourcing

7C-40.000MCB-T Selection Criteria:

• Preferred for high-volume production runs requiring Tape & Reel packaging
• Acceptable for applications where ±50ppm frequency stability meets performance specifications
• Supports automated assembly processes with continuous reel feeding

Compliance & Regulatory: Both parts maintain identical RoHS Compliance, MSL Rating (1 - Unlimited), REACH Status (REACH Unaffected), and ECCN classification (EAR99). Both are manufactured by TXC CORPORATION with Active product status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can 7C-40.000MCB-T replace 7C-40.000MCA-T in existing designs?

A: Yes, provided the application tolerates ±50ppm frequency stability. All electrical parameters, supply voltage, output type, temperature range, and physical dimensions are identical. The primary difference is packaging format (Tape & Reel vs. standard).

Q: What is the impact of frequency stability difference (±25ppm vs. ±50ppm)?

A: Frequency stability tolerance determines long-term frequency accuracy. The 7C-40.000MCB-T specification of ±50ppm is twice the tolerance of the main part. Applications requiring tighter frequency control should use the 7C-40.000MCA-T.

Q: Are there any thermal or electrical performance differences?

A: No. Both parts operate identically across the -10°C ~ 70°C temperature range with maximum supply current of 30mA. Thermal and electrical characteristics are equivalent.

Q: What does Tape & Reel (TR) packaging mean?

A: Tape & Reel packaging supplies components on continuous plastic tape wound on reels, optimized for automated pick-and-place assembly. Standard packaging typically refers to bulk or tube formats suitable for manual or lower-volume assembly.

Q: Are both parts RoHS Compliant?

A: Yes. Both 7C-40.000MCA-T and 7C-40.000MCB-T are RoHS Compliant with MSL Rating 1 (Unlimited moisture sensitivity level).

Q: What is the physical footprint compatibility?

A: Both parts use identical 4-SMD, No Lead package with dimensions 5.00mm L x 3.20mm W x 1.40mm H (Max). PCB layout and reflow profiles are interchangeable.