7X-40.000MBA-T CMOS Oscillator Equivalent & Substitute Parts

Part Overview

The 7X-40.000MBA-T is a 40 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This surface mount crystal oscillator operates at 3.3V with Enable/Disable functionality, housed in a 4-SMD, No Lead package measuring 3.20mm x 2.50mm. The device is classified as Active product status with RoHS Compliant certification and Moisture Sensitivity Level 1 (Unlimited).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across critical parameters including frequency, output type, supply voltage, operating temperature range, and package configuration. Identifying qualified substitutes ensures design flexibility, supply chain continuity, and component availability.

Substiute Parts

7X-40.000MBA-T

TXC CORPORATIONIn Stock: 7677X-40.000MBA-T Datasheet

Current PartRFQ

SXO32C3C171-40.000M

Suntsu Electronics, Inc.In Stock: 1740SXO32C3C171-40.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Electrical Equivalence Requirements:

• Frequency: 40 MHz (exact match)
• Output: CMOS (exact match)
• Supply Voltage: 3.3V (exact match)
• Function: Enable/Disable (exact match)
• Frequency Stability: ±25ppm (exact match)
• Operating Temperature: -10°C ~ 70°C (exact match)
• Base Resonator: Crystal (exact match)
• Type: XO (Standard) (exact match)

Mechanical Equivalence Requirements:

• Package Type: 4-SMD, No Lead (exact match)
• Package Dimensions: 3.20mm L x 2.50mm W (exact match)
• Mounting Type: Surface Mount (exact match)

The substitute part SXO32C3C171-40.000M meets all electrical and mechanical equivalence criteria. Variations in maximum supply current (20mA vs. 17mA) and seated height (1.10mm vs. 1.20mm) remain within acceptable tolerance for direct substitution in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (7X-40.000MBA-T): The TXC CORPORATION 7X-40.000MBA-T is the specified component with Active product status, RoHS Compliant certification, and Moisture Sensitivity Level 1. This part is suitable for applications requiring the original design specification with Tape & Reel packaging.

Substitute Selection (SXO32C3C171-40.000M): The Suntsu Electronics SXO32C3C171-40.000M provides electrical and mechanical equivalence with Active product status and ROHS3 Compliant certification. The lower maximum supply current (17mA vs. 20mA) represents improved efficiency. The maximum seated height of 1.20mm (versus 1.10mm) remains within standard PCB assembly tolerances for 4-SMD packages. This part is available in Bulk packaging.

Both parts satisfy identical electrical performance criteria and mechanical compatibility requirements. Selection between these parts is determined by supply availability, packaging preference (Tape & Reel vs. Bulk), and procurement lead times.

Frequently Asked Questions (FAQ)

Q: Can the SXO32C3C171-40.000M directly replace the 7X-40.000MBA-T in existing designs?

A: Yes. Both parts meet identical electrical specifications (40 MHz, CMOS output, 3.3V supply, Enable/Disable function, ±25ppm stability, -10°C to 70°C operating range) and mechanical requirements (4-SMD No Lead package, 3.20mm x 2.50mm footprint, surface mount). The 0.10mm height difference (1.20mm vs. 1.10mm) is within standard PCB assembly tolerances.

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

A: The 7X-40.000MBA-T specifies a maximum supply current of 20mA, while the SXO32C3C171-40.000M specifies 17mA. The lower current of the Suntsu part indicates improved power efficiency. Both values are compatible with standard 3.3V supply designs.

Q: Are there packaging differences between these parts?

A: Yes. The 7X-40.000MBA-T is supplied in Tape & Reel (TR) packaging, while the SXO32C3C171-40.000M is supplied in Bulk packaging. Tape & Reel is standard for automated assembly lines, while Bulk packaging is typical for component distribution. Packaging selection depends on procurement volume and assembly process requirements.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. The 7X-40.000MBA-T is RoHS Compliant, and the SXO32C3C171-40.000M is ROHS3 Compliant. Both certifications confirm compliance with hazardous substance restrictions. ROHS3 represents the current revision of the RoHS directive.

Q: Are the frequency stability specifications identical?

A: Yes. Both parts specify ±25ppm frequency stability, ensuring equivalent timing accuracy across the operating temperature range of -10°C to 70°C.

Q: What is the significance of the 4-SMD, No Lead package designation?

A: This designation indicates a surface mount package with four solder pads and no through-hole leads. The "No Lead" configuration is standard for modern compact oscillators and requires reflow soldering during PCB assembly. Both parts use this identical package type.