7W40000027 XTAL OSC XO 40.0000MHZ CMOS SMD Equivalent & Substitute Parts

Part Overview

The 7W40000027 is a 40 MHz crystal oscillator manufactured by TXC CORPORATION, designed as a standard XO (Crystal Oscillator) with CMOS output, 3.3V supply voltage, and Enable/Disable functionality. This component is classified as obsolete product status. The part is packaged in a 4-SMD, No Lead surface mount configuration with dimensions of 7.00mm x 5.00mm and a maximum seated height of 1.42mm.

Due to the obsolete product status of the 7W40000027, identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and replacement applications. Substitute parts must maintain electrical and mechanical compatibility across critical parameters including frequency, output type, supply voltage, and physical package dimensions.

Substiute Parts

7W40000027

TXC CORPORATIONIn Stock: 7607W40000027 Datasheet

Current PartRFQ

SXO75C3A271-40.000M

Suntsu Electronics, Inc.In Stock: 1438SXO75C3A271-40.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7W40000027 are identified based on strict electrical and mechanical parameter matching. The substitution logic is based on the following critical parameters that must remain constant:

Electrical Parameters (Non-negotiable):

• Frequency: 40 MHz (exact match required)
• Output Type: CMOS (logic family compatibility)
• Supply Voltage: 3.3V (circuit voltage requirement)
• Function: Enable/Disable (operational capability)
• Frequency Stability: ±50ppm (timing accuracy)
• Operating Temperature Range: -20°C ~ 70°C (environmental specification)

Mechanical Parameters (Non-negotiable):

• Package Type: 4-SMD, No Lead (physical form factor)
• Mounting Type: Surface Mount (assembly method)
• Dimensions: 7.00mm x 5.00mm (PCB footprint)

The substitute part SXO75C3A271-40.000M from Suntsu Electronics, Inc. meets all critical electrical and mechanical parameters. This part maintains identical frequency, output type, supply voltage, function, frequency stability, operating temperature range, package type, mounting type, and physical dimensions as the original 7W40000027.

Parameter Comparison

Engineering Selection Recommendations

The SXO75C3A271-40.000M from Suntsu Electronics, Inc. is a direct electrical and mechanical equivalent to the obsolete 7W40000027 from TXC CORPORATION. Selection of this substitute part is based on the following engineering factors:

Product Status Consideration: The 7W40000027 is classified as obsolete, making the active-status SXO75C3A271-40.000M the appropriate choice for ongoing production and component replacement requirements.

Compliance and Certification: Both parts maintain equivalent regulatory compliance. The 7W40000027 is RoHS Compliant, while the SXO75C3A271-40.000M is ROHS3 Compliant, representing an advancement in compliance standards. Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming regulatory equivalence.

Electrical Parameter Alignment: All critical electrical parameters are identical: 40 MHz frequency, CMOS output, 3.3V supply voltage, Enable/Disable function, ±50ppm frequency stability, and -20°C ~ 70°C operating temperature range. These parameters determine functional compatibility in the circuit.

Mechanical Parameter Alignment: Physical compatibility is confirmed through identical package type (4-SMD, No Lead), mounting type (Surface Mount), and PCB footprint dimensions (7.00mm x 5.00mm). The maximum seated height difference (1.42mm versus 1.60mm) is within acceptable tolerance for surface mount assembly processes.

Availability: The SXO75C3A271-40.000M is available in active inventory (1328 Pcs New Original In Stock), ensuring reliable component sourcing compared to the obsolete 7W40000027.

Frequently Asked Questions (FAQ)

Q: Can the SXO75C3A271-40.000M be used as a direct replacement for the 7W40000027 without circuit modifications?

A: Yes. The SXO75C3A271-40.000M is a direct electrical and mechanical equivalent. All critical parameters including frequency, output type, supply voltage, function, frequency stability, operating temperature range, package type, and physical dimensions are identical. No circuit modifications are required.

Q: What is the significance of the height difference between the two parts (1.42mm vs 1.60mm)?

A: The height difference of 0.18mm is within standard manufacturing tolerances for surface mount components and does not affect PCB assembly compatibility or circuit performance. Both parts use identical 4-SMD, No Lead package types and will function identically in the same PCB footprint.

Q: Are there any compliance or regulatory differences between the two parts?

A: Both parts maintain equivalent regulatory compliance. The 7W40000027 is RoHS Compliant, while the SXO75C3A271-40.000M is ROHS3 Compliant, representing an advancement in compliance standards. Both share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: Why is the 7W40000027 classified as obsolete?

A: The 7W40000027 is listed as obsolete product status, indicating it is no longer in active production. The SXO75C3A271-40.000M from Suntsu Electronics, Inc. is the active equivalent part available for new designs and component replacement.

Q: What is the maximum supply current for the SXO75C3A271-40.000M?

A: The maximum supply current is 25mA. This specification was not provided for the original 7W40000027 but is documented for the substitute part.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the 7W40000027 and SXO75C3A271-40.000M operate across the identical temperature range of -20°C ~ 70°C.

Q: Can the SXO75C3A271-40.000M be used in existing inventory systems designed for the 7W40000027?

A: Yes. The identical frequency (40 MHz), output type (CMOS), supply voltage (3.3V), package type (4-SMD, No Lead), and physical dimensions (7.00mm x 5.00mm) ensure full compatibility with existing PCB designs and assembly processes.