20 MHz Through Hole Crystal 9B20070002 Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 9B20070002 is a 20 MHz fundamental mode crystal oscillator in HC-49/US package designed for through-hole mounting applications. This part operates at 20 MHz with ±30ppm frequency tolerance and 18pF load capacitance. The 9B20070002 is classified as obsolete product status. Substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements where the original part is no longer manufactured or stocked.

Substiute Parts

9B20070002

TXC CORPORATIONIn Stock: 9519B20070002 Datasheet

Current PartRFQ

AS-20.000-20

Raltron ElectronicsIn Stock: 6223AS-20.000-20 Datasheet

SimilarRFQ

ATS200C

CTS-Frequency ControlsIn Stock: 2549ATS200C Datasheet

SimilarRFQ

ATS20A

CTS-Frequency ControlsIn Stock: 2165ATS20A Datasheet

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FC4STCBMF20.0

Fox ElectronicsIn Stock: 13964FC4STCBMF20.0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9B20070002 is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Frequency: 20.0000 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Operating Mode: Fundamental (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -20°C to 70°C (exact match required)

Secondary Compatibility Parameters:

• Load Capacitance: 18pF or 20pF (within acceptable circuit design margins)
• ESR: 30 Ohms or 40 Ohms (within acceptable circuit design margins)
• RoHS3 Compliance: Required for regulatory alignment

All substitute parts listed maintain identical frequency, tolerance, operating mode, package, and temperature specifications. Variations in load capacitance (18pF vs 20pF) and ESR (30 Ohms vs 40 Ohms) represent minor parameter differences that remain within acceptable substitution boundaries for HC-49/US crystal applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Load Capacitance and ESR):

The ATS200C (CTS-Frequency Controls) and ATS20A (CTS-Frequency Controls) are active product alternatives with identical electrical specifications to the 9B20070002. Both parts maintain 20 MHz frequency, ±30ppm tolerance, HC-49/US package, and through-hole mounting. The ATS200C specifically matches the 18pF load capacitance and 30 Ohms ESR of the original part. The ATS20A provides 20pF load capacitance with 30 Ohms ESR. Both CTS parts carry active product status and ROHS3 compliance.

Compatible Alternatives (Minor Parameter Variance):

The AS-20.000-20 (Raltron Electronics) and FC4STCBMF20.0 (Fox Electronics) are active alternatives with 20pF load capacitance. The AS-20.000-20 has 40 Ohms ESR, while the FC4STCBMF20.0 has 30 Ohms ESR. Both maintain all critical frequency, tolerance, package, and temperature specifications. These parts are suitable for applications where 20pF load capacitance is acceptable within circuit design parameters.

Availability and Compliance:

All substitute parts are currently in active production status with substantial inventory availability. All four alternatives maintain ROHS3 compliance and EAR99 export classification consistent with the original part. Selection should prioritize active product status and load capacitance compatibility with the target circuit design.

Frequently Asked Questions (FAQ)

Q: Can the AS-20.000-20 substitute for the 9B20070002 in all applications?

A: The AS-20.000-20 is electrically compatible for applications where 20pF load capacitance is acceptable. The primary difference is load capacitance (20pF vs 18pF) and ESR (40 Ohms vs 30 Ohms). Circuit design must accommodate these parameter variations. The HC-49/US package and through-hole mounting are identical.

Q: What is the difference between ATS200C and ATS20A?

A: Both are CTS-Frequency Controls active products in HC-49/US package. The ATS200C has 18pF load capacitance and 30 Ohms ESR, matching the original 9B20070002 specification. The ATS20A has 20pF load capacitance and 30 Ohms ESR. Selection depends on circuit load capacitance requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four substitute parts (AS-20.000-20, ATS200C, ATS20A, FC4STCBMF20.0) are ROHS3 compliant, maintaining regulatory alignment with the original 9B20070002.

Q: Does load capacitance variation affect circuit performance?

A: Load capacitance is a critical circuit parameter. The 9B20070002 specifies 18pF. Substitute parts with 20pF load capacitance (AS-20.000-20, ATS20A, FC4STCBMF20.0) require circuit design verification to confirm compatibility. The ATS200C maintains 18pF specification for direct equivalence.

Q: Why is the 9B20070002 listed as obsolete?

A: The 9B20070002 is no longer manufactured by TXC CORPORATION. Active alternatives from Raltron Electronics, CTS-Frequency Controls, and Fox Electronics provide equivalent or compatible functionality for new designs and field replacements.

Q: Can I use FC4STCBMF20.0 as a direct replacement?

A: The FC4STCBMF20.0 is mechanically and electrically compatible for HC-49/US through-hole applications. It has 20pF load capacitance and 30 Ohms ESR. Circuit design must confirm 20pF load capacitance compatibility. All frequency, tolerance, and temperature specifications match the original part.

Q: What is the inventory status of substitute parts?

A: AS-20.000-20 has 6,153 units in stock. ATS200C has 2,521 units in stock. ATS20A has 2,081 units in stock. FC4STCBMF20.0 has 13,877 units in stock. All parts are available as new original components.