7C-4.000MBA-T CMOS Crystal Oscillator Equivalent & Substitute Parts

Part Overview

The 7C-4.000MBA-T is a 4 MHz CMOS crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications requiring enable/disable functionality at 3.3V supply voltage. This component operates across the industrial temperature range of -10°C to 70°C and is classified as an active product with full RoHS compliance and REACH unaffected status. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained while accommodating supply chain variations or inventory availability.

Substiute Parts

7C-4.000MBA-T

TXC CORPORATIONIn Stock: 10797C-4.000MBA-T Datasheet

Current PartRFQ

7C-4.000MBB-T

TXC CORPORATIONIn Stock: 86087C-4.000MBB-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 7C-4.000MBA-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 4 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Operating Temperature Range: -10°C to 70°C (minimum)
• Package Type: 4-SMD, No Lead
• Package Dimensions: 5.00mm x 3.20mm x 1.40mm (maximum height)
• Mounting Type: Surface Mount
• Manufacturer: TXC CORPORATION (same series family)

Allowable Variation Parameters:

• Frequency Stability: Tolerance variation permitted within application requirements
• Maximum Supply Current: Equal or lower values acceptable
• Inventory availability: Substitute parts may have different stock levels

The 7C-4.000MBB-T qualifies as a direct substitute based on identical electrical specifications, mechanical compatibility, and regulatory compliance across all mandatory parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (7C-4.000MBA-T): Select this part when frequency stability of ±25ppm is required by circuit design specifications. This part maintains active product status with full manufacturing support and RoHS compliance. Current inventory of 994 pieces supports immediate procurement.

Substitute Part Selection (7C-4.000MBB-T): The 7C-4.000MBB-T is electrically and mechanically interchangeable with the primary part. Selection of this substitute is appropriate when:

• Application circuit design tolerates ±50ppm frequency stability
• Supply chain availability of the primary part is constrained
• Cost optimization is a secondary design objective
• Regulatory compliance requirements are identical (RoHS Compliant, REACH Unaffected)

Both parts maintain identical electrical performance for CMOS output, 3.3V supply operation, enable/disable functionality, and thermal operating range. The 7C-4.000MBB-T carries higher inventory availability (8501 pieces) and represents a valid direct substitution path.

Frequently Asked Questions (FAQ)

Q: Can the 7C-4.000MBB-T replace the 7C-4.000MBA-T in existing designs?

A: Yes. Both parts are mechanically and electrically compatible across all critical parameters including frequency, output type, supply voltage, function, operating temperature, package type, and dimensions. The substitute part has wider frequency stability (±50ppm versus ±25ppm), which is acceptable for applications not requiring tighter tolerance specifications.

Q: What is the primary difference between these two parts?

A: The frequency stability specification differs. The 7C-4.000MBA-T provides ±25ppm stability, while the 7C-4.000MBB-T provides ±50ppm stability. All other electrical and mechanical parameters are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the 7C-4.000MBA-T and 7C-4.000MBB-T are RoHS Compliant with REACH Unaffected status. Both carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: Do these parts require different PCB footprints?

A: No. Both parts use identical 4-SMD, No Lead package with dimensions of 5.00mm x 3.20mm x 1.40mm maximum height. PCB layout and assembly processes are identical.

Q: What is the supply voltage requirement for both parts?

A: Both parts operate at 3.3V supply voltage with maximum supply current of 30mA. Enable/disable functionality is supported on both parts.

Q: Are these parts available in different packaging formats?

A: Both parts are supplied in Tape & Reel (TR) packaging format suitable for automated assembly processes.

Q: What is the operating temperature range for these oscillators?

A: Both parts operate across -10°C to 70°C, suitable for industrial temperature applications.