7X-20.000MBA-T Crystal Oscillator Equivalent & Substitute Parts

Part Overview

The 7X-20.000MBA-T is a 20 MHz crystal oscillator manufactured by TXC CORPORATION. This CMOS-output XO (Standard) oscillator operates at 3.3V with Enable/Disable functionality in a 4-SMD, No Lead surface mount package. The device is Active in product status and RoHS Compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate multiple qualified suppliers.

Substiute Parts

7X-20.000MBA-T

TXC CORPORATIONIn Stock: 9807X-20.000MBA-T Datasheet

Current PartRFQ

SXO32C3C171-20.000M

Suntsu Electronics, Inc.In Stock: 1659SXO32C3C171-20.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7X-20.000MBA-T are qualified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on the following matching criteria:

Mandatory Matching Parameters:

• Frequency: 20 MHz (exact match required)
• Output: CMOS (signal type compatibility)
• Supply Voltage: 3.3V (power supply compatibility)
• Function: Enable/Disable (control interface compatibility)
• Frequency Stability: ±25ppm (timing accuracy)
• Operating Temperature: -10°C ~ 70°C (environmental compatibility)
• Package / Case: 4-SMD, No Lead (PCB footprint compatibility)
• Size / Dimension: 0.126" L x 0.098" W / 3.20mm x 2.50mm (board layout compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)
• Base Resonator: Crystal (oscillator technology)

Allowable Variations:

• Current Supply (Max): Substitute may be lower than main part (10mA vs 20mA acceptable; lower current consumption is beneficial)
• Height - Seated (Max): Minor variation acceptable within assembly clearance limits (1.10mm vs 1.20mm)
• Packaging Format: Bulk vs Tape & Reel (logistics variation; does not affect component function)
• RoHS Compliance Status: Both RoHS Compliant and ROHS3 Compliant are acceptable (ROHS3 is superset compliance)

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 7X-20.000MBA-T

The 7X-20.000MBA-T remains the primary selection when available. This part is Active in product status, RoHS Compliant, and supplied in Tape & Reel packaging suitable for automated assembly processes. Current supply specification of 20mA accommodates designs with higher power consumption margins.

Substitute Part: SXO32C3C171-20.000M

The SXO32C3C171-20.000M qualifies as a direct substitute when the primary part is unavailable. This Suntsu Electronics part meets all mandatory electrical and mechanical parameters. Key considerations:

• Compliance Enhancement: ROHS3 Compliant status exceeds RoHS Compliant requirement, providing enhanced regulatory coverage
• Power Efficiency: 10mA maximum supply current is lower than the primary part, reducing power consumption in the oscillator circuit
• Physical Compatibility: Height difference of 0.04mm (1.20mm vs 1.10mm) is within typical PCB assembly clearance tolerances and does not affect functionality
• Packaging Format: Supplied in Bulk format; integration into automated assembly requires reel conversion or manual handling procedures
• Inventory Availability: 1635 Pcs in stock provides robust supply continuity

Both parts are suitable for direct PCB footprint replacement without design modification.

Frequently Asked Questions (FAQ)

Q: Can the SXO32C3C171-20.000M be used as a direct replacement for the 7X-20.000MBA-T?

A: Yes. Both parts share identical electrical specifications (20 MHz, CMOS output, 3.3V supply, Enable/Disable function, ±25ppm stability, -10°C to 70°C operating range) and mechanical compatibility (4-SMD No Lead package, 3.20mm x 2.50mm footprint, surface mount). The 0.04mm height difference and lower current consumption do not affect circuit functionality.

Q: What is the significance of the current supply difference (20mA vs 10mA)?

A: The substitute part's lower maximum current specification (10mA) indicates more efficient oscillator design. This is beneficial for power-constrained applications. If the design requires the full 20mA specification, verify actual circuit current draw before substitution. In most applications, actual current consumption is significantly lower than maximum specification.

Q: Does the packaging format difference (Tape & Reel vs Bulk) affect component performance?

A: No. Packaging format affects logistics and assembly handling only, not electrical or mechanical performance. Bulk packaging requires manual reel conversion or pick-and-place adaptation for automated assembly lines. Electrical and functional characteristics are identical.

Q: Is the ROHS3 Compliant status of the substitute part compatible with RoHS Compliant requirements?

A: Yes. ROHS3 Compliance is a superset of RoHS Compliance, meeting all original RoHS requirements plus additional restrictions. Designs specified for RoHS Compliant components accept ROHS3 Compliant substitutes without modification.

Q: What is the impact of the 0.04mm height difference on PCB assembly?

A: The height difference (1.20mm vs 1.10mm) is negligible for standard PCB assembly processes. Typical component clearance specifications allow ±0.1mm variation. Verify clearance with specific PCB design constraints if the application has height-restricted areas (such as under-board components or confined spaces).

Q: Are there any design considerations when switching between these parts?

A: No design changes are required. Both parts are pin-compatible, electrically equivalent, and mechanically interchangeable. Substitute the part number in component procurement; no circuit modification, firmware update, or testing protocol change is necessary.

Q: What is the frequency stability specification and why does it matter?

A: Both parts specify ±25ppm frequency stability across the operating temperature range. This specification defines the maximum frequency deviation from the nominal 20 MHz center frequency. For timing-critical applications, verify that ±25ppm stability meets system requirements before substitution.