P6SMB68CA-M3/52 Equivalent & Substitute Parts

Part Overview

The P6SMB68CA-M3/52 is a bidirectional Zener 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 status and RoHS3 compliant. Substitute parts may be required due to packaging availability, lead time constraints, or specific manufacturing source preferences while maintaining equivalent electrical performance.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	58.1	V
Voltage - Breakdown (Min)	64.6	V
Voltage - Clamping (Max) @ Ipp	92	V
Current - Peak Pulse (10/1000µs)	6.5	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	—

Substitute Part Grouping Explanation

Substitution validity for the P6SMB68CA-M3/52 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 58.1V
Voltage - Breakdown (Min): 64.6V
Voltage - Clamping (Max) @ Ipp: 92V
Current - Peak Pulse (10/1000µs): 6.5A
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1

Parts are grouped as direct substitutes when all critical electrical parameters match exactly and the package remains DO-214AA (SMB) surface mount. Packaging format variations (Tape & Box vs. Cut Tape vs. Tape & Reel) do not affect electrical equivalence.

Parameter Comparison

Parameter	P6SMB68CA-M3/52 (Main)	P6SMB68CA-E3/52	P6SMB68CA (Eaton)	SM6T68CA	SM6T68CAY
Manufacturer	Vishay	Vishay	Eaton	STMicroelectronics	STMicroelectronics
Voltage - Reverse Standoff (Typ)	58.1V	58.1V	5.8V	58.1V	58.1V
Voltage - Breakdown (Min)	64.6V	64.6V	6.45V	64.6V	64.6V
Voltage - Clamping (Max) @ Ipp	92V	92V	10.5V	121V	121V
Current - Peak Pulse (10/1000µs)	6.5A	6.5A	58.1A	33A (8/20µs)	33A (8/20µs)
Power - Peak Pulse	600W	600W	600W	600W	600W
Operating Temperature Range	-65°C to 150°C	-65°C to 150°C	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Qualification	—	—	—	—	AEC-Q101

Engineering Selection Recommendations

Direct Electrical Equivalents:

P6SMB68CA-E3/52 (Vishay) is a direct electrical equivalent to P6SMB68CA-M3/52. Both parts share identical electrical specifications and operating temperature range. The difference is packaging format: P6SMB68CA-E3/52 is supplied in Cut Tape & Digi-Reel format versus Tape & Box for the main part. Both are ROHS3 compliant and Active status.

Non-Equivalent Parts:

P6SMB68CA (Eaton) does not meet substitution criteria. Although it carries the same base part number designation, the electrical parameters differ significantly: Reverse Standoff voltage is 5.8V (vs. 58.1V), Breakdown voltage is 6.45V (vs. 64.6V), Clamping voltage is 10.5V (vs. 92V), and Peak Pulse Current is 58.1A (vs. 6.5A). This part operates in a different voltage class and is not interchangeable.

SM6T68CA and SM6T68CAY (STMicroelectronics) do not meet substitution criteria. While Reverse Standoff and Breakdown voltages match (58.1V and 64.6V respectively), the Clamping voltage is 121V (vs. 92V) and Peak Pulse Current is 33A (vs. 6.5A). These represent different performance characteristics within the same voltage class.

SM6T68CAY includes AEC-Q101 automotive qualification, which is not present in the main part specification.

Frequently Asked Questions (FAQ)

Q: Can P6SMB68CA-E3/52 replace P6SMB68CA-M3/52 in production?

A: Yes. P6SMB68CA-E3/52 is electrically identical to P6SMB68CA-M3/52. The only difference is packaging format (Cut Tape & Digi-Reel vs. Tape & Box). Both are surface mount DO-214AA (SMB) components with identical electrical performance and compliance status.

Q: Why are the Eaton P6SMB68CA and STMicroelectronics SM6T68CA parts listed as non-equivalent?

A: These parts have different electrical specifications. The Eaton part operates at a different voltage class (5.8V standoff vs. 58.1V). The STMicroelectronics parts have higher clamping voltage (121V vs. 92V) and higher peak pulse current (33A vs. 6.5A). These differences make them unsuitable for direct substitution in circuits designed for the P6SMB68CA-M3/52.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Tape & Box, Cut Tape, or Tape & Reel) does not affect electrical performance. All formats deliver the same component with identical specifications. Format selection is based on assembly process requirements and inventory management.

Q: Are all listed parts RoHS compliant?

A: Yes. P6SMB68CA-M3/52, P6SMB68CA-E3/52, and both STMicroelectronics parts (SM6T68CA, SM6T68CAY) are RoHS3 compliant. The Eaton P6SMB68CA is RoHS compliant but not specifically ROHS3 certified.

Q: What is the significance of AEC-Q101 qualification on SM6T68CAY?

A: AEC-Q101 is an automotive qualification standard. SM6T68CAY meets this standard; the main part P6SMB68CA-M3/52 does not list this qualification. If automotive-grade qualification is required, SM6T68CAY would not be suitable as a direct substitute due to its different electrical parameters, regardless of qualification status.

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