P6SMBJ30C Equivalent & Substitute Parts

Part Overview

The P6SMBJ30C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc. in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 25.6V reverse standoff voltage and 600W peak pulse power rating. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	P6SMBJ30C
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Bidirectional Channels	1
Voltage - Reverse Standoff (Typ)	25.6V
Voltage - Breakdown (Min)	27V
Voltage - Clamping (Max) @ Ipp	43.47V
Current - Peak Pulse (10/1000µs)	14.7A
Power - Peak Pulse	600W
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the P6SMBJ30C is determined by the following critical parameters:

Reverse standoff voltage: 25.6V (Typ)
Breakdown voltage range: 27V minimum to 28.5V minimum
Clamping voltage: 41.4V to 43.47V maximum
Peak pulse current: 14.4A to 14.7A
Peak pulse power: 600W
Package type: DO-214AA (SMB) surface mount
Bidirectional configuration: Single channel

All substitute parts listed maintain these electrical specifications within acceptable engineering tolerances for transient voltage suppression applications. Package compatibility and RoHS compliance are preserved across all alternatives.

Parameter Comparison

Parameter	P6SMBJ30C (Main)	SZP6SMB30CAT3G	P6SMB30CA (Eaton)	P6SMB30CAHE3_A/H	SM6T30CA	SM6T30CAY
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Eaton - Electronics Division	Vishay General Semiconductor	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Obsolete	Active	Active
Voltage - Reverse Standoff (Typ)	25.6V	25.6V	25.6V	25.6V	25.6V	25.6V
Voltage - Breakdown (Min)	27V	28.5V	28.5V	28.5V	28.5V	28.5V
Voltage - Clamping (Max) @ Ipp	43.47V	41.4V	41.4V	41.4V	54.6V	54.6V
Current - Peak Pulse (10/1000µs)	14.7A	14.4A	14.7A	14.5A	75A (8/20µs)	75A (8/20µs)
Power - Peak Pulse	600W	600W	600W	600W	600W	600W
Operating Temperature	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Status, Closest Electrical Match):

SZP6SMB30CAT3G and P6SMB30CA (Eaton) are the preferred active alternatives. Both maintain the 25.6V reverse standoff voltage and 600W power rating. The SZP6SMB30CAT3G offers automotive-grade qualification (AEC-Q101) with extended temperature range (-65°C to 150°C). The P6SMB30CA from Eaton provides the highest inventory availability (20,000 pcs) and maintains identical peak pulse current (14.7A) to the original part.

Secondary Substitutes (Active Status, Higher Clamping Voltage):

SM6T30CA and SM6T30CAY from STMicroelectronics maintain the 25.6V reverse standoff voltage and 600W power rating but feature higher clamping voltage (54.6V) and significantly higher peak pulse current (75A at 8/20µs pulse). These parts are suitable for applications requiring enhanced transient suppression capability. SM6T30CAY includes automotive-grade qualification (AEC-Q101).

Obsolete Alternatives (Not Recommended for New Designs):

P6SMB30CAHE3_A/H from Vishay is listed as obsolete and should not be selected for new designs despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can I use SM6T30CA or SM6T30CAY as direct replacements for P6SMBJ30C?

A: Yes, with design consideration. Both parts maintain the critical 25.6V reverse standoff voltage and 600W power rating in the same DO-214AA (SMB) package. However, the higher clamping voltage (54.6V vs. 43.47V) and peak pulse current (75A vs. 14.7A) indicate enhanced suppression capability. Applications requiring the original clamping voltage specification should use SZP6SMB30CAT3G or P6SMB30CA instead.

Q: What is the difference between SZP6SMB30CAT3G and P6SMB30CA?

A: Both parts share identical electrical specifications (25.6V standoff, 41.4V clamping, 600W power). SZP6SMB30CAT3G is supplied in Tape & Reel packaging with automotive qualification (AEC-Q101) and extended temperature range (-65°C to 150°C). P6SMB30CA is supplied in Cut Tape & Digi-Reel packaging with standard temperature range (-55°C to 150°C). Selection depends on packaging requirements and temperature operating conditions.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are RoHS compliant (ROHS3 or RoHS Compliant status). The original P6SMBJ30C is ROHS3 compliant.

Q: Can I use P6SMB30CAHE3_A/H for new designs?

A: No. This part is listed as obsolete and should not be selected for new designs. Use SZP6SMB30CAT3G or P6SMB30CA instead.

Q: What packaging options are available for substitutes?

A: SZP6SMB30CAT3G is supplied in Tape & Reel (TR). P6SMB30CA is supplied in Cut Tape (CT) & Digi-Reel. SM6T30CA and SM6T30CAY are supplied in Cut Tape (CT) & Digi-Reel. All parts use the DO-214AA (SMB) surface mount package compatible with the original P6SMBJ30C footprint.

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