P6SMB24A-E3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB24A-E3/5B is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates with a reverse standoff voltage of 20.5V and provides clamping protection at 33.2V maximum, making it suitable for general-purpose transient suppression applications. The part is active in production status and RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative performance characteristics better suit specific application requirements.

Substiute Parts

P6SMB24A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 3497P6SMB24A-E3/5B Datasheet

Current PartRFQ

SM6T24A

STMicroelectronicsIn Stock: 2942SM6T24A Datasheet

DirectRFQ

1KSMB24A

Taiwan Semiconductor CorporationIn Stock: 77121KSMB24A Datasheet

MFR RecommendedRFQ

P6SMB24A

Eaton - Electronics DivisionIn Stock: 2059P6SMB24A Datasheet

MFR RecommendedRFQ

P6SMB24A

Eaton - Electronics DivisionIn Stock: 2059P6SMB24A Datasheet

MFR RecommendedRFQ

SM6T24AY

STMicroelectronicsIn Stock: 2639SM6T24AY Datasheet

MFR RecommendedRFQ

SMBJP6KE24A-TP

Micro Commercial CoIn Stock: 2931SMBJP6KE24A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB24A-E3/5B are qualified based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 20.5V
• Voltage - Breakdown (Min): 22.8V
• Voltage - Clamping (Max) @ Ipp: 33.2V (or higher, indicating enhanced performance)
• Unidirectional channel configuration (1 channel)
• Type: Zener diode

Mechanical Compatibility Criteria:

• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Compliance Criteria:

• RoHS3 Compliant or RoHS Compliant
• Active product status

Substitute parts meeting these criteria are electrically and mechanically interchangeable. Parts with higher clamping voltages or peak pulse currents provide enhanced transient suppression capability while maintaining compatibility with the original design envelope.

Parameter Comparison

Engineering Selection Recommendations

Direct Electrical Equivalents (Identical Clamping Voltage):

The following parts provide direct electrical equivalence with 33.2V clamping voltage matching the P6SMB24A-E3/5B:

• 1KSMB24A (Taiwan Semiconductor Corporation): Offers enhanced peak pulse power rating of 1000W versus 600W, with extended operating temperature range to 175°C. Suitable for applications requiring higher thermal margin or increased transient energy absorption.

• P6SMB24A (Eaton - Electronics Division): Maintains identical electrical specifications with 18.4A peak pulse current. Provides alternative sourcing from Eaton's electronics division.

• SMBJP6KE24A-TP (Micro Commercial Co): Delivers equivalent performance with extended operating temperature range to 175°C and higher peak pulse power capability. Qualified for general-purpose applications.

Enhanced Performance Alternatives (Higher Clamping Voltage):

The following parts provide superior transient suppression with higher clamping voltages:

• SM6T24A (STMicroelectronics): Offers 42.8V clamping voltage with significantly higher peak pulse current of 93A (8/20µs pulse). Suitable for applications requiring enhanced transient suppression margin.

• SM6T24AY (STMicroelectronics): Automotive-grade variant (AEC-Q101 qualified) with 42.8V clamping voltage and 93A peak pulse current. Recommended for automotive and mission-critical applications requiring higher reliability qualification.

All substitute parts maintain DO-214AA/SMB package compatibility, surface mount configuration, and RoHS compliance. Selection should be based on specific application requirements for operating temperature range, peak pulse power handling, and transient suppression margin.

Frequently Asked Questions (FAQ)

Q: Can SM6T24A or SM6T24AY be used as direct replacements for P6SMB24A-E3/5B?

A: Yes, with design consideration. Both parts maintain the same reverse standoff voltage (20.5V) and minimum breakdown voltage (22.8V), ensuring circuit protection activation at identical thresholds. The higher clamping voltage (42.8V versus 33.2V) provides enhanced transient suppression margin. This is a pin-compatible, package-compatible substitution that improves performance characteristics.

Q: What is the difference between SM6T24A and SM6T24AY?

A: SM6T24AY is the automotive-grade variant qualified to AEC-Q101 standard. Both parts share identical electrical specifications (20.5V standoff, 42.8V clamping, 93A peak pulse current). SM6T24AY is recommended for automotive applications or systems requiring higher reliability qualification. SM6T24A is suitable for general industrial and commercial applications.

Q: Does the 1KSMB24A offer any advantages over the original P6SMB24A-E3/5B?

A: Yes. The 1KSMB24A provides double the peak pulse power rating (1000W versus 600W) and extends the operating temperature range to 175°C (versus 150°C). These enhancements provide greater thermal margin and increased transient energy absorption capability while maintaining identical clamping voltage and package compatibility.

Q: Are all substitute parts available in the same packaging options?

A: All substitute parts are available in DO-214AA/SMB surface mount package. Packaging formats (Tape & Reel, Cut Tape, Digi-Reel) vary by manufacturer and supplier. Verify packaging availability with your component distributor based on procurement volume and assembly requirements.

Q: What is the operating temperature consideration when selecting a substitute?

A: The P6SMB24A-E3/5B operates from -65°C to 150°C. Most substitute parts operate from -55°C to 150°C, reducing the lower temperature limit by 10°C. For applications requiring -65°C operation, verify substitute part specifications. The 1KSMB24A and SMBJP6KE24A-TP extend the upper limit to 175°C, providing additional thermal headroom for high-temperature environments.

Q: Is the SMBJP6KE24A-TP package designation different from standard SMB?

A: The SMBJP6KE24A-TP uses DO-214AA (SMBJ) designation, which is mechanically and electrically compatible with standard DO-214AA (SMB) packages. Both are surface mount packages with identical footprints and pin configurations. The "J" designation indicates a variant within the same package family.