P6SMB22A-M3/52 Equivalent & Substitute Parts

Part Overview

The P6SMB22A-M3/52 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 18.8V reverse standoff voltage class and provides 30.6V maximum clamping voltage with 19.6A peak pulse current capability. The device is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory optimization, and supply chain continuity while maintaining electrical and mechanical compatibility.

Substiute Parts

P6SMB22A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 988P6SMB22A-M3/52 Datasheet

Current PartRFQ

P6SMB22A

Eaton - Electronics DivisionIn Stock: 3327P6SMB22A Datasheet

MFR RecommendedRFQ

P6SMB22A

Eaton - Electronics DivisionIn Stock: 3327P6SMB22A Datasheet

MFR RecommendedRFQ

SM6T22A

STMicroelectronicsIn Stock: 17939SM6T22A Datasheet

MFR RecommendedRFQ

SM6T22AY

STMicroelectronicsIn Stock: 1903SM6T22AY Datasheet

MFR RecommendedRFQ

SMBJP6KE22A-TP

Micro Commercial CoIn Stock: 4166SMBJP6KE22A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB22A-M3/52 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 18.8V
• Voltage - Breakdown (Min): 20.9V
• Voltage - Clamping (Max) @ Ipp: 30.6V
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Acceptable Variation Parameters:

• Current - Peak Pulse (10/1000µs): 19.6A nominal (range 19.7A to 102A acceptable for equivalent function)
• Operating Temperature: -65°C to -55°C minimum acceptable
• Packaging format: Tape & Box (TB), Cut Tape (CT), Digi-Reel®, or Tape & Reel (TR)

All identified substitutes maintain identical voltage specifications and package form factor while meeting or exceeding the original part's electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and meet or exceed RoHS compliance requirements of the original P6SMB22A-M3/52. Selection among equivalents should be based on the following criteria:

P6SMB22A (Eaton): Direct electrical equivalent with identical voltage and current specifications. Suitable for general replacement where packaging format (Cut Tape & Digi-Reel®) is compatible with assembly processes.

SM6T22A (STMicroelectronics): Exceeds peak pulse current capability (102A vs. 19.6A) while maintaining identical voltage parameters. TRANSIL™ series designation indicates enhanced transient suppression performance. Suitable for applications requiring higher current handling margin.

SM6T22AY (STMicroelectronics): Automotive-grade variant with AEC-Q101 qualification. Identical electrical specifications to SM6T22A. Required for automotive applications or systems with automotive-grade component requirements.

SMBJP6KE22A-TP (Micro Commercial Co): Electrical equivalent with extended maximum operating temperature (175°C vs. 150°C). Suitable for high-temperature applications or thermal margin optimization.

Frequently Asked Questions (FAQ)

Q: Can P6SMB22A (Eaton) be used as a direct replacement for P6SMB22A-M3/52 (Vishay)?

A: Yes. Both parts share identical voltage specifications (18.8V reverse standoff, 20.9V breakdown, 30.6V clamping), current ratings (19.6A vs. 19.7A), power dissipation (600W), and DO-214AA SMB package form factor. The primary difference is packaging format (Tape & Box vs. Cut Tape & Digi-Reel®) and operating temperature minimum (-65°C vs. -55°C). Verify packaging compatibility with your assembly process.

Q: What is the difference between SM6T22A and SM6T22AY?

A: Both parts are electrically identical with 18.8V reverse standoff and 30.6V clamping voltage. SM6T22AY is automotive-grade with AEC-Q101 qualification, required for automotive applications. SM6T22A is general-purpose grade. Peak pulse current specification differs in measurement standard (102A at 8/20µs vs. 10/1000µs), but both meet the 600W power dissipation requirement.

Q: Why does SM6T22A show 102A peak pulse current while the original part shows 19.6A?

A: The difference reflects different measurement standards. SM6T22A specifies current at 8/20µs pulse duration (standard for TRANSIL™ series), while P6SMB22A-M3/52 specifies at 10/1000µs. Both devices are rated for 600W peak pulse power and 30.6V clamping voltage. The higher current value does not indicate incompatibility; it reflects the measurement methodology used by STMicroelectronics.

Q: Is SMBJP6KE22A-TP suitable for high-temperature applications?

A: SMBJP6KE22A-TP supports operating temperatures up to 175°C (junction), compared to 150°C for the original P6SMB22A-M3/52. This extended range provides additional thermal margin for applications operating near maximum rated temperature. All other electrical parameters remain equivalent.

Q: Are all substitute parts RoHS compliant?

A: Yes. All identified substitutes are RoHS compliant. P6SMB22A (Eaton), SM6T22A, SM6T22AY, and SMBJP6KE22A-TP meet RoHS requirements. The original P6SMB22A-M3/52 is ROHS3 compliant, and all substitutes maintain equivalent or superior compliance status.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, provided packaging format compatibility is confirmed. All parts use DO-214AA SMB surface mount package with identical footprint and pin configuration. Verify that your assembly equipment and reflow profile are compatible with the specific packaging format (Tape & Box, Cut Tape, Digi-Reel®, or Tape & Reel) of the selected substitute.