P6SMBJ20C Equivalent & Substitute Parts

Part Overview

The P6SMBJ20C is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, housed in a DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage protection applications. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P6SMBJ20C

LittelfuseIn Stock: 971P6SMBJ20C Datasheet

Current PartRFQ

SMBJP6KE20CA-TP

Micro Commercial CoIn Stock: 1454SMBJP6KE20CA-TP Datasheet

DirectRFQ

P6SMB20CA

Eaton - Electronics DivisionIn Stock: 35475P6SMB20CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6SMBJ20C is determined by the following critical parameters:

• Bidirectional TVS diode topology with single channel
• Reverse standoff voltage of 17.1V (typical)
• Breakdown voltage minimum of 18V or higher
• Peak pulse current capability of 21.7A or greater
• Peak pulse power rating of 600W
• DO-214AA (SMB) surface mount package
• RoHS3 compliance
• Operating temperature range support

The substitute parts listed below maintain these core electrical and mechanical specifications, ensuring functional equivalence in transient voltage protection circuits.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing support, addressing the obsolescence of the P6SMBJ20C. The SMBJP6KE20CA-TP from Micro Commercial Co offers an extended operating temperature range to 175°C and is available in Tape & Reel packaging. The P6SMB20CA from Eaton is the manufacturer-recommended substitute, available in higher inventory quantities and offered in Cut Tape and Digi-Reel packaging options.

Selection between these substitutes should be based on packaging requirements, temperature operating range needs, and supply chain availability. Both maintain electrical equivalence within the specified parameter tolerances for TVS diode applications.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB20CA be used as a direct replacement for the P6SMBJ20C?

A: Yes. Both parts share identical reverse standoff voltage (17.1V), equivalent breakdown voltage specifications (19V minimum vs. 18V minimum), comparable clamping voltage (27.7V vs. 29.09V), and the same DO-214AA SMB package. Peak pulse power rating is 600W for both.

Q: What is the difference between the SMBJP6KE20CA-TP and P6SMB20CA substitutes?

A: The primary differences are manufacturer (Micro Commercial Co vs. Eaton), packaging format (Tape & Reel vs. Cut Tape/Digi-Reel), and maximum operating temperature (175°C vs. 150°C). Electrical specifications are equivalent.

Q: Does the clamping voltage difference between P6SMBJ20C (29.09V) and the substitutes (27.7V) affect circuit compatibility?

A: The lower clamping voltage of the substitutes provides improved transient suppression performance. This is a beneficial characteristic for protection circuits and does not create compatibility issues.

Q: Are all listed parts RoHS3 compliant?

A: Yes. The P6SMBJ20C and both substitute parts are ROHS3 compliant.

Q: What packaging options are available for these substitutes?

A: SMBJP6KE20CA-TP is supplied in Tape & Reel format. P6SMB20CA is available in Cut Tape and Digi-Reel packaging options.