P6SMB12CA-M3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB12CA-M3/5B is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the DO-214AA (SMB) package and is designed for general-purpose transient voltage suppression applications. The part is active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to availability constraints, supply chain considerations, or design flexibility needs.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	10.2	V
Voltage - Breakdown (Min)	11.4	V
Voltage - Clamping (Max) @ Ipp	16.7	V
Current - Peak Pulse (10/1000µs)	35.9	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65°C to 150°C	TJ
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the P6SMB12CA-M3/5B is determined by strict equivalence in the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 10.2V
Voltage - Breakdown (Min): 11.4V
Voltage - Clamping (Max) @ Ipp: 16.7V
Current - Peak Pulse (10/1000µs): 35.9A minimum
Power - Peak Pulse: 600W minimum
Package / Case: DO-214AA or SMB
Mounting Type: Surface Mount
Operating Temperature: -55°C to 150°C minimum range
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories: direct equivalents with identical electrical specifications and alternative manufacturers offering equivalent performance within the specified parameter ranges.

Parameter Comparison

Part Number	Manufacturer	Vwm (Typ) V	Vbr (Min) V	Vc (Max) V	Ipp A	Power W	Temp Range °C	Package
P6SMB12CA-M3/5B	Vishay	10.2	11.4	16.7	35.9	600	-65 to 150	DO-214AA
P6SMB12CA-E3/52	Vishay	10.2	11.4	16.7	35.9	600	-65 to 150	DO-214AA
1KSMB12CA	Taiwan Semiconductor	10.2	11.4	16.7	59.9	1000	-55 to 175	DO-214AA
P6SMB12CA	Good-Ark Semiconductor	10.2	11.4	16.7	35.9	600	-55 to 150	DO-214AA
SM6T12CA	STMicroelectronics	10.2	11.4	21.7	184	600	-55 to 150	DO-214AA
SMBJP6KE12CA-TP	Micro Commercial Co	10.2	11.4	16.7	36.5	600	-55 to 175	DO-214AA
SZP6SMB12CAT3G	Littelfuse Inc.	10.2	11.4	16.7	36	600	-65 to 150	DO-214AA

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) rating, ensuring compatibility with standard manufacturing and storage requirements.

P6SMB12CA-E3/52 (Vishay) is a direct equivalent differing only in packaging format (Cut Tape & Digi-Reel versus Tape & Box), suitable for high-volume production environments.

1KSMB12CA (Taiwan Semiconductor) provides enhanced performance with 59.9A peak pulse current and 1000W power rating, supporting extended operating temperature range to 175°C. This part exceeds minimum specifications and is suitable for applications requiring higher transient energy absorption.

P6SMB12CA (Good-Ark Semiconductor) maintains identical electrical specifications with equivalent packaging, offering supply chain flexibility from an alternative manufacturer.

SM6T12CA (STMicroelectronics) exhibits higher clamping voltage (21.7V) and significantly higher peak pulse current (184A with 8/20µs pulse), representing a performance upgrade suitable for applications requiring enhanced surge protection.

SMBJP6KE12CA-TP (Micro Commercial Co) provides equivalent clamping voltage and peak pulse current with extended operating temperature to 175°C, maintaining 600W power rating.

SZP6SMB12CAT3G (Littelfuse Inc.) includes automotive-grade qualification (AEC-Q101) with equivalent electrical specifications, suitable for automotive and harsh environment applications.

Frequently Asked Questions (FAQ)

Q: Can P6SMB12CA-E3/52 replace P6SMB12CA-M3/5B directly?

A: Yes. Both parts are manufactured by Vishay with identical electrical specifications (10.2V standoff, 16.7V clamping, 35.9A peak pulse, 600W power). The difference is packaging format: M3/5B uses Tape & Box while E3/52 uses Cut Tape & Digi-Reel. Electrical performance and mechanical compatibility are equivalent.

Q: Is 1KSMB12CA a suitable substitute?

A: Yes, with performance enhancement. The 1KSMB12CA maintains the required voltage specifications (10.2V standoff, 16.7V clamping) but provides higher peak pulse current (59.9A versus 35.9A) and 1000W power rating. Operating temperature extends to 175°C. This part is suitable for applications where higher transient energy absorption is beneficial or required.

Q: What is the difference between SM6T12CA and the main part?

A: SM6T12CA maintains the same standoff voltage (10.2V) and breakdown voltage (11.4V) but exhibits higher clamping voltage (21.7V) and significantly higher peak pulse current (184A). This represents a performance upgrade for applications requiring enhanced surge suppression capability.

Q: Can I use SZP6SMB12CAT3G in automotive applications?

A: Yes. SZP6SMB12CAT3G carries AEC-Q101 automotive qualification with equivalent electrical specifications to the main part. This part is specifically qualified for automotive and harsh environment use.

Q: Are all substitute parts in the same DO-214AA package?

A: Yes. All listed substitute parts use DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility with the original design.

Q: Do all substitutes meet RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting standard manufacturing and storage requirements.

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