P6SMB36C Equivalent & Substitute Parts

Part Overview

The P6SMB36C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 30.8V reverse standoff voltage, 52.4V maximum clamping voltage, and 600W peak pulse power rating in a DO-214AA (SMB) package. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	30.8	V
Voltage - Breakdown (Min)	32.4	V
Voltage - Clamping (Max) @ Ipp	52.4	V
Current - Peak Pulse (10/1000µs)	12.2	A
Power - Peak Pulse	600	W
Package / Case	DO-214AA, SMB	—
Operating Temperature Range	-55 to 150	°C (TJ)
Type	Zener	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution for the P6SMB36C is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 30.8V
Voltage - Breakdown (Min): 32.4V minimum
Voltage - Clamping (Max) @ Ipp: Maximum allowable 52.4V
Current - Peak Pulse (10/1000µs): Minimum 12.2A
Power - Peak Pulse: 600W
Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Operating Temperature: -55°C to 150°C minimum
RoHS Status: ROHS3 Compliant

Substitute parts must maintain electrical compatibility within these parameters. Parts with lower clamping voltages (49.9V) are acceptable as they provide superior transient suppression. Parts with higher peak pulse current ratings (62A) are acceptable as they exceed minimum requirements. Packaging variants (Cut Tape, Tape & Reel, Tape & Box) are interchangeable for the same electrical specification.

Parameter Comparison

Part Number	Manufacturer	VWM (Typ) V	VBR (Min) V	VC (Max) @ Ipp V	Ipp (10/1000µs) A	PPP W	Package	Temp Range °C	Status
P6SMB36C	Littelfuse Inc.	30.8	32.4	52.4	12.2	600	DO-214AA (SMBJ)	-55 to 150	Obsolete
P6SMB36CA	Good-Ark Semiconductor	30.8	34.2	49.9	12	600	DO-214AA (SMB)	-55 to 150	Active
SZP6SMB36CAT3G	Littelfuse Inc.	30.8	34.2	49.9	12	600	DO-214AA (SMB)	-65 to 150	Active
P6SMB36CA-M3/52	Vishay General Semiconductor	30.8	34.2	49.9	12	600	DO-214AA (SMBJ)	-65 to 150	Active
P6SMB36CA-M3/5B	Vishay General Semiconductor	30.8	34.2	49.9	12	600	DO-214AA (SMBJ)	-65 to 150	Active
P6SMB36CAHE3_A/H	Vishay General Semiconductor	30.8	34.2	49.9	12	600	DO-214AA (SMB)	-65 to 150	Obsolete
SM6T36CA	STMicroelectronics	30.8	34.2	64.3	62	600	DO-214AA (SMB)	-55 to 150	Active
SM6T36CA-E3/52	Vishay General Semiconductor	30.8	34.2	49.9	12	600	DO-214AA (SMBJ)	-65 to 150	Active
SM6T36CA-E3/5B	Vishay General Semiconductor	30.8	34.2	49.9	12	600	DO-214AA (SMBJ)	-65 to 150	Active
SM6T36CAY	STMicroelectronics	30.8	34.2	64.3	62	600	DO-214AA (SMB)	-55 to 150	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs)

P6SMB36CA (Good-Ark Semiconductor) and SZP6SMB36CAT3G (Littelfuse Inc.) are the preferred direct replacements. Both maintain identical reverse standoff voltage (30.8V) and peak pulse power (600W) while offering improved clamping performance at 49.9V. SZP6SMB36CAT3G provides extended temperature range (-65°C to 150°C) and is manufactured by the original equipment supplier, ensuring design continuity.

Secondary Substitutes (Equivalent Performance)

P6SMB36CA-M3/52, P6SMB36CA-M3/5B, SM6T36CA-E3/52, and SM6T36CA-E3/5B maintain full electrical equivalence with identical voltage and current specifications. These parts are available in active production status with extended temperature ranges. Packaging variants (Tape & Box, Cut Tape, Tape & Reel) accommodate different procurement and assembly workflows.

High-Performance Alternatives

SM6T36CA and SM6T36CAY offer superior transient suppression capability with 62A peak pulse current (8/20µs) and 64.3V clamping voltage. These parts exceed the minimum current requirement and are suitable for applications requiring enhanced overvoltage protection margins. SM6T36CAY includes automotive-grade qualification (AEC-Q101).

Obsolete Parts to Avoid

P6SMB36CAHE3_A/H is obsolete and should not be selected for new designs despite electrical equivalence.

Frequently Asked Questions (FAQ)

Q: Can I use P6SMB36CA as a direct replacement for P6SMB36C?

A: Yes. P6SMB36CA maintains the same reverse standoff voltage (30.8V), peak pulse power (600W), and package type (DO-214AA). The clamping voltage is lower (49.9V vs. 52.4V), which provides superior transient suppression performance.

Q: What is the difference between DO-214AA (SMB) and DO-214AA (SMBJ) packaging?

A: Both designations refer to the same physical package footprint and are mechanically and electrically interchangeable. The suffix indicates supplier-specific packaging conventions and does not affect circuit performance.

Q: Why do some substitutes have higher peak pulse current ratings (62A vs. 12A)?

A: SM6T36CA and SM6T36CAY are designed for higher transient energy absorption. The 62A rating (8/20µs) represents a different pulse waveform specification than the 12A rating (10/1000µs). Both meet the 600W peak pulse power requirement and are electrically compatible.

Q: Is SZP6SMB36CAT3G suitable for automotive applications?

A: SZP6SMB36CAT3G is not listed with automotive qualification. For automotive-grade requirements, SM6T36CAY (AEC-Q101 qualified) is the appropriate selection.

Q: Can I substitute parts with different temperature ranges?

A: Yes, provided the selected part's operating temperature range meets or exceeds your application requirements. SZP6SMB36CAT3G, P6SMB36CA-M3/52, P6SMB36CA-M3/5B, SM6T36CA-E3/52, and SM6T36CA-E3/5B all support -65°C to 150°C, which exceeds the original P6SMB36C specification of -55°C to 150°C.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original P6SMB36C specifications.

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