P6SMB20A-E3/52 Equivalent & Substitute Parts

Part Overview

The P6SMB20A-E3/52 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 17.1V reverse standoff voltage class and provides 27.7V maximum clamping voltage with 21.7A peak pulse current capability. The device is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the DO-214AA (SMB) package family.

Substiute Parts

P6SMB20A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 2081P6SMB20A-E3/52 Datasheet

Current PartRFQ

SM6T22A

STMicroelectronicsIn Stock: 17939SM6T22A Datasheet

DirectRFQ

1KSMB20A

Taiwan Semiconductor CorporationIn Stock: 9021KSMB20A Datasheet

MFR RecommendedRFQ

P6SMB20A

Eaton - Electronics DivisionIn Stock: 5158P6SMB20A Datasheet

MFR RecommendedRFQ

SMBJP6KE20A-TP

Micro Commercial CoIn Stock: 30145SMBJP6KE20A-TP Datasheet

MFR RecommendedRFQ

SZP6SMB20AT3G

Littelfuse Inc.In Stock: 5473SZP6SMB20AT3G Datasheet

MFR RecommendedRFQ

TPSMB20A

Littelfuse Inc.In Stock: 1223TPSMB20A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB20A-E3/52 are selected based on the following critical electrical and mechanical parameters:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 17.1V
• Voltage - Clamping (Max) @ Ipp: 27.7V
• Voltage - Breakdown (Min): 19V
• Package / Case: DO-214AA or SMB variant
• Mounting Type: Surface Mount
• Current - Peak Pulse: 21.7A or higher
• Power - Peak Pulse: 600W or higher

Substitution Logic: Parts are grouped as direct substitutes when they maintain identical reverse standoff voltage (17.1V), identical maximum clamping voltage (27.7V), and identical minimum breakdown voltage (19V). All substitute parts operate in the same DO-214AA/SMB package family and are surface mount devices. Peak pulse current and power ratings must meet or exceed the original specification. Operating temperature range and RoHS compliance are secondary considerations that may vary between manufacturers while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Direct Electrical Equivalents (17.1V Standoff Class):

The following parts maintain identical electrical specifications and are direct substitutes for the P6SMB20A-E3/52:

• 1KSMB20A (Taiwan Semiconductor Corporation): Matches all critical voltage parameters with enhanced peak pulse current (36.1A) and power rating (1000W). Extended operating temperature range to 175°C. Active product status, ROHS3 compliant.

• P6SMB20A (Eaton - Electronics Division): Identical electrical performance with matching 21.7A peak pulse current and 600W power rating. Active product status, RoHS compliant. Suitable for telecom applications.

• SMBJP6KE20A-TP (Micro Commercial Co): Matches voltage specifications with 22A peak pulse current. Extended operating temperature range to 175°C. Active product status, ROHS3 compliant.

• SZP6SMB20AT3G (Littelfuse Inc.): Matches all electrical parameters with 22A peak pulse current. AEC-Q101 automotive qualified. Active product status, ROHS3 compliant. Capacitance specified at 910pF @ 1MHz.

• TPSMB20A (Littelfuse Inc.): Matches voltage specifications with 22A peak pulse current. AEC-Q101 automotive qualified. Extended operating temperature range to 175°C. Active product status, ROHS3 compliant.

Alternative with Higher Voltage Rating:

• SM6T22A (STMicroelectronics): Operates in the 18.8V standoff voltage class with 30.6V maximum clamping voltage. Significantly higher peak pulse current (102A at 8/20µs pulse). Suitable for applications requiring higher transient energy absorption. Active product status, ROHS3 compliant.

All substitute parts are Active product status and RoHS compliant, ensuring regulatory compliance and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can I use SM6T22A as a direct replacement for P6SMB20A-E3/52?

A: SM6T22A is not a direct electrical equivalent. It operates at a higher reverse standoff voltage (18.8V vs. 17.1V) and higher clamping voltage (30.6V vs. 27.7V). While it provides superior transient suppression capability, it may not be suitable for circuits designed for the lower voltage class. Use only if circuit design permits higher clamping voltages.

Q: What is the difference between the SMB and SMBJ package variants?

A: Both SMB and SMBJ are DO-214AA package variants used for surface mount TVS diodes. The SMBJ designation indicates a specific manufacturer's variant of the same physical package. Electrical performance and PCB footprint compatibility remain identical. Verify with your PCB design tool for any specific package requirements.

Q: Are automotive-qualified parts (AEC-Q101) required for my application?

A: AEC-Q101 qualification is required only for automotive applications. SZP6SMB20AT3G and TPSMB20A carry AEC-Q101 qualification. For non-automotive applications, any Active product status substitute with matching electrical parameters is acceptable.

Q: Which substitute offers the best thermal performance?

A: 1KSMB20A and SMBJP6KE20A-TP and TPSMB20A offer extended operating temperature ranges to 175°C compared to the original 150°C maximum. These parts provide superior thermal margin in high-temperature environments.

Q: Can I use a substitute with higher peak pulse current rating?

A: Yes. Substitutes with equal or higher peak pulse current ratings (36.1A for 1KSMB20A, 102A for SM6T22A) are electrically compatible. Higher current ratings provide additional design margin without affecting circuit operation at the original design current levels.

Q: Are all substitutes RoHS3 compliant?

A: All listed substitutes are RoHS3 compliant except P6SMB20A (Eaton), which carries standard RoHS compliance. For applications requiring ROHS3 specifically, use 1KSMB20A, SMBJP6KE20A-TP, SZP6SMB20AT3G, TPSMB20A, or SM6T22A.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture bake requirements. All listed parts carry MSL 1, eliminating moisture sensitivity concerns during storage and handling.