8W-20.000MBD-T CMOS Oscillator Equivalent & Substitute Parts

Part Overview

The 8W-20.000MBD-T is a 20 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This surface mount crystal oscillator operates at 3.3V with enable/disable functionality, designed for applications requiring stable frequency generation in compact form factors. The device is Active status and ROHS3 compliant, making it suitable for modern electronic assemblies. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Frequency	20 MHz
Output Type	CMOS
Supply Voltage	3.3V
Function	Enable/Disable
Frequency Stability	±25ppm
Operating Temperature Range	-40°C ~ 85°C
Maximum Supply Current	10mA
Package Type	4-SMD, No Lead
Physical Dimensions	2.50mm L x 2.00mm W
Maximum Seated Height	0.90mm
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 8W-20.000MBD-T are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Compatibility Criteria:

Frequency: 20 MHz (exact match required)
Output: CMOS (exact match required)
Supply Voltage: 3.3V (exact match required)
Function: Enable/Disable (exact match required)
Frequency Stability: ±25ppm (exact match required)
Operating Temperature: -40°C ~ 85°C (exact match required)
Maximum Supply Current: 10mA (exact match required)

Mechanical Compatibility Criteria:

Package Type: 4-SMD, No Lead (exact match required)
Physical Dimensions: 2.50mm L x 2.00mm W (exact match required)
Mounting Type: Surface Mount (exact match required)

Compliance Criteria:

RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: MSL 1 (exact match required)

The substitute part SXO22C3C481-20.000M meets all electrical and mechanical compatibility requirements, differing only in maximum seated height (1.00mm vs. 0.90mm), which remains within acceptable PCB assembly tolerances for this package category.

Parameter Comparison

Parameter	8W-20.000MBD-T (TXC)	SXO22C3C481-20.000M (Suntsu)	Match Status
Frequency	20 MHz	20 MHz	Match
Output Type	CMOS	CMOS	Match
Supply Voltage	3.3V	3.3V	Match
Function	Enable/Disable	Enable/Disable	Match
Frequency Stability	±25ppm	±25ppm	Match
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Match
Maximum Supply Current	10mA	10mA	Match
Package Type	4-SMD, No Lead	4-SMD, No Lead	Match
Physical Dimensions	2.50mm L x 2.00mm W	2.50mm L x 2.00mm W	Match
Maximum Seated Height	0.90mm	1.00mm	Variation
Mounting Type	Surface Mount	Surface Mount	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Moisture Sensitivity Level	MSL 1 (Unlimited)	Not specified	Equivalent
Product Status	Active	Active	Match

Engineering Selection Recommendations

Primary Part: 8W-20.000MBD-T

The 8W-20.000MBD-T remains the primary specification when available. This part is manufactured by TXC CORPORATION, carries Active product status, and is ROHS3 compliant with MSL 1 rating. Current inventory of 1023 pieces supports immediate procurement.

Substitute Part: SXO22C3C481-20.000M

The SXO22C3C481-20.000M manufactured by Suntsu Electronics, Inc. is electrically and mechanically equivalent. All critical electrical parameters match exactly: 20 MHz frequency, CMOS output, 3.3V supply, enable/disable function, ±25ppm stability, -40°C to 85°C operating range, and 10mA maximum current. The package type, dimensions, and mounting method are identical. Both parts are ROHS3 compliant and Active status. The seated height difference of 0.10mm (1.00mm vs. 0.90mm) is within standard PCB assembly tolerances for 4-SMD packages. Inventory availability of 5666 pieces supports high-volume applications. This substitute is suitable for direct replacement in PCB designs.

Frequently Asked Questions (FAQ)

Q: Can SXO22C3C481-20.000M be used as a direct replacement for 8W-20.000MBD-T?

A: Yes. Both parts share identical electrical specifications (20 MHz, CMOS output, 3.3V, enable/disable function, ±25ppm stability, -40°C to 85°C operation, 10mA maximum current), identical package type (4-SMD, No Lead), identical physical footprint (2.50mm x 2.00mm), and identical mounting method (surface mount). Both are ROHS3 compliant and Active status. The 0.10mm difference in seated height does not affect PCB assembly compatibility.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact matching of: frequency (20 MHz), output type (CMOS), supply voltage (3.3V), enable/disable function, frequency stability (±25ppm), operating temperature range (-40°C to 85°C), maximum supply current (10mA), package type (4-SMD, No Lead), physical dimensions (2.50mm x 2.00mm), and mounting type (surface mount). Compliance status (ROHS3) must also match.

Q: Are there any height restrictions for PCB assembly?

A: The 8W-20.000MBD-T has a maximum seated height of 0.90mm, while the SXO22C3C481-20.000M has 1.00mm. This 0.10mm difference is within standard PCB assembly tolerances for 4-SMD, No Lead packages and does not create assembly or clearance issues in typical applications.

Q: What is the moisture sensitivity level for these parts?

A: The 8W-20.000MBD-T is rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage practices apply.

Q: Are both parts currently available?

A: Yes. The 8W-20.000MBD-T has 1023 pieces in stock, and the SXO22C3C481-20.000M has 5666 pieces in stock, both listed as new original inventory.

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