P6SMB27A-M3/52 Equivalent & Substitute Parts

Part Overview

The P6SMB27A-M3/52 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 23.1V reverse standoff range with a 37.5V maximum clamping voltage and 16A peak pulse current rating. The device is designed for general-purpose transient protection applications and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). Finding equivalent and substitute parts is necessary to address supply chain flexibility, packaging preferences, and application-specific requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

P6SMB27A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 30388P6SMB27A-M3/52 Datasheet

Current PartRFQ

P6SMB27A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 2225P6SMB27A-E3/52 Datasheet

DirectRFQ

P6SMB27A

Eaton - Electronics DivisionIn Stock: 20240P6SMB27A Datasheet

MFR RecommendedRFQ

P6SMB27A

Eaton - Electronics DivisionIn Stock: 20240P6SMB27A Datasheet

MFR RecommendedRFQ

SM6T27A

STMicroelectronicsIn Stock: 10481SM6T27A Datasheet

MFR RecommendedRFQ

SM6T27AY

STMicroelectronicsIn Stock: 7176SM6T27AY Datasheet

MFR RecommendedRFQ

SZP6SMB27AT3G

onsemiIn Stock: 2160SZP6SMB27AT3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB27A-M3/52 are classified based on strict electrical and mechanical parameter alignment:

Group 1: Direct Electrical & Packaging Equivalents These parts maintain identical voltage ratings (23.1V reverse standoff, 25.7V breakdown minimum, 37.5V clamping maximum), identical peak pulse current (16A at 10/1000µs), and identical package format (DO-214AA SMB). Substitution is based on matching these core electrical parameters and surface mount package compatibility.

Group 2: Electrical Equivalents with Higher Peak Pulse Current These parts maintain identical voltage ratings but feature higher peak pulse current ratings (16.3A or 83A). Substitution is permissible when the application can accommodate higher current handling capability without adverse effects.

Group 3: Electrical Equivalents with Higher Clamping Voltage These parts maintain identical voltage standoff and breakdown parameters but feature higher clamping voltage (48.3V). Substitution requires verification that the application circuit can tolerate the increased clamping voltage.

Key Parameters Determining Substitution:

• Voltage - Reverse Standoff (Typ): 23.1V
• Voltage - Breakdown (Min): 25.7V
• Voltage - Clamping (Max) @ Ipp: 37.5V (or higher acceptable)
• Current - Peak Pulse (10/1000µs): 16A (or higher acceptable)
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount

Parameter Comparison

Engineering Selection Recommendations

P6SMB27A-E3/52 (Vishay): Direct substitute with identical electrical specifications and packaging. Differs only in tape and reel configuration (Cut Tape & Digi-Reel versus Tape & Box). Suitable for applications requiring the same performance envelope. RoHS3 compliant.

P6SMB27A (Eaton): Acceptable substitute with marginally higher peak pulse current (16.3A versus 16A) and identical voltage ratings. Operating temperature range is reduced to -55°C minimum. RoHS compliant. Select when higher current margin is beneficial and lower temperature limit is acceptable.

SM6T27A (STMicroelectronics): Acceptable substitute with identical voltage ratings but significantly higher peak pulse current (83A at 8/20µs) and higher clamping voltage (48.3V). Operating temperature range is -55°C to 150°C. ROHS3 compliant. Select only when the application circuit can accommodate higher clamping voltage without performance degradation.

SM6T27AY (STMicroelectronics): Acceptable substitute with identical electrical specifications to SM6T27A. Includes automotive grade qualification (AEC-Q101). Operating temperature range is -55°C to 150°C. ROHS3 compliant. Select for automotive applications requiring AEC-Q101 qualification.

SZP6SMB27AT3G (onsemi): Direct substitute with identical electrical specifications and operating temperature range (-65°C to 150°C). Includes automotive grade qualification (AEC-Q101). ROHS3 compliant. Select for automotive applications or when AEC-Q101 qualification is required.

Frequently Asked Questions (FAQ)

Q: Can P6SMB27A-E3/52 replace P6SMB27A-M3/52 directly? A: Yes. Both parts are manufactured by Vishay with identical electrical specifications (23.1V reverse standoff, 25.7V breakdown, 37.5V clamping, 16A peak pulse current). The difference is packaging configuration (Cut Tape & Digi-Reel versus Tape & Box). Both are RoHS3 compliant and suitable for direct substitution.

Q: What is the difference between SM6T27A and SM6T27AY? A: Both parts have identical electrical specifications and operating temperature ranges. SM6T27AY includes automotive grade qualification (AEC-Q101) certification. Select SM6T27AY for applications requiring automotive qualification.

Q: Can I use SM6T27A or SM6T27AY as substitutes for P6SMB27A-M3/52? A: These parts maintain identical voltage ratings (23.1V reverse standoff, 25.7V breakdown) but feature higher clamping voltage (48.3V versus 37.5V) and significantly higher peak pulse current (83A versus 16A). Substitution is permissible only if the application circuit can tolerate the higher clamping voltage without adverse effects on downstream components or circuit performance.

Q: What is the operating temperature difference between Vishay and other manufacturers? A: Vishay P6SMB27A-M3/52 and onsemi SZP6SMB27AT3G operate from -65°C to 150°C. Eaton P6SMB27A and STMicroelectronics SM6T27A/SM6T27AY operate from -55°C to 150°C. Select Vishay or onsemi parts for applications requiring -65°C minimum operating temperature.

Q: Is SZP6SMB27AT3G suitable for automotive applications? A: Yes. SZP6SMB27AT3G includes automotive grade qualification (AEC-Q101) and is ROHS3 compliant. It maintains identical electrical specifications to P6SMB27A-M3/52 with operating temperature range of -65°C to 150°C.

Q: What does the packaging designation "Tape & Box (TB)" versus "Cut Tape (CT) & Digi-Reel" mean? A: Tape & Box (TB) indicates components supplied on tape in a box container. Cut Tape (CT) & Digi-Reel indicates components supplied on cut tape or on a reel. Both are surface mount compatible. Selection depends on assembly process requirements and inventory management preferences.

Q: Can I substitute P6SMB27A (Eaton) for P6SMB27A-M3/52 (Vishay)? A: Yes, with considerations. Eaton P6SMB27A has marginally higher peak pulse current (16.3A versus 16A) and identical voltage ratings. However, the operating temperature minimum is -55°C versus -65°C. Substitution is acceptable for applications not requiring -65°C operation.