P6SMBJ200 Equivalent & Substitute Parts

Part Overview

The P6SMBJ200 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 171V reverse standoff voltage with a 287.7V maximum clamping voltage at peak pulse current and is housed in a DO-214AA (SMB) package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	P6SMBJ200
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	171V
Voltage - Breakdown (Min)	180V
Voltage - Clamping (Max) @ Ipp	287.7V
Current - Peak Pulse (10/1000µs)	2.2A
Power - Peak Pulse	600W
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the P6SMBJ200 is determined by the following critical parameters:

Reverse Standoff Voltage (Typ): 171V — all substitutes must maintain this specification
Unidirectional Configuration: Single channel operation required
Package Type: DO-214AA (SMB) surface-mount package mandatory
Voltage Clamping Range: Maximum clamping voltage between 274V and 287.7V acceptable
Peak Pulse Current: 2.2A nominal, with tolerance to 2.19A acceptable
Power Dissipation: 600W peak pulse power maintained across all substitutes
Operating Temperature Range: Minimum -55°C to 150°C required
RoHS Compliance: ROHS3 Compliant status required

Substitute parts are grouped into two categories: manufacturer-recommended active alternatives and direct functional equivalents. All listed substitutes meet the electrical and mechanical compatibility requirements for direct replacement in the P6SMBJ200 application.

Parameter Comparison

Parameter	P6SMBJ200	P6SMB200A (Meritek)	SZP6SMB200AT3G	SMBJP6KE200A-TP	P6SMB200AHE3_A/H	SM6T200A-E3/52	SM6T200A-E3/5B
Manufacturer	Littelfuse Inc.	Meritek	Littelfuse Inc.	Micro Commercial Co	Vishay	Vishay	Vishay
Product Status	Obsolete	Active	Active	Active	Obsolete	Active	Active
Voltage - Reverse Standoff (Typ)	171V	171V	171V	171V	171V	171V	171V
Voltage - Breakdown (Min)	180V	190V	190V	190V	190V	190V	190V
Voltage - Clamping (Max) @ Ipp	287.7V	274V	274V	274V	274V	274V	274V
Current - Peak Pulse (10/1000µs)	2.2A	2.19A	2.2A	2.2A	2.2A	2.2A	2.2A
Power - Peak Pulse	600W	600W	600W	600W	600W	600W	600W
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 175°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C
Package / Case	DO-214AA, SMB	DO-214AA (SMB)	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: P6SMB200A (Meritek)

The P6SMB200A is the manufacturer-recommended substitute with active product status. It maintains all critical electrical parameters within acceptable tolerance, including 171V reverse standoff voltage, 274V clamping voltage, and 2.19A peak pulse current. This part offers the highest inventory availability (38,905 units) and is ROHS3 compliant with unlimited moisture sensitivity rating.

Secondary Recommendation: SZP6SMB200AT3G (Littelfuse Inc.)

The SZP6SMB200AT3G is an active Littelfuse product with automotive-grade qualification (AEC-Q101) and extended operating temperature range (-65°C to 150°C). It maintains identical electrical specifications to the original part with 2.2A peak pulse current and includes capacitance specification (115pF @ 1MHz). This option is suitable for applications requiring automotive-grade components.

Alternative Options: SMBJP6KE200A-TP, SM6T200A-E3/52, SM6T200A-E3/5B

All three alternatives are active products meeting core electrical requirements. SMBJP6KE200A-TP (Micro Commercial Co) offers extended operating temperature to 175°C. SM6T200A-E3/52 and SM6T200A-E3/5B (Vishay) provide automotive-grade qualification with -65°C lower temperature limit. All maintain 171V standoff voltage, 274V clamping voltage, and 600W power dissipation.

Obsolete Status Consideration: P6SMB200AHE3_A/H

While P6SMB200AHE3_A/H is classified as obsolete, it remains available with 8,169 units in stock and meets all electrical and mechanical specifications. This part includes automotive-grade qualification and AEC-Q101 certification. Selection should prioritize active alternatives unless specific design requirements mandate this variant.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for the P6SMBJ200?

A: Yes. All listed substitute parts maintain the critical electrical parameters: 171V reverse standoff voltage, DO-214AA (SMB) package, 600W peak pulse power, and ROHS3 compliance. Voltage clamping specifications range from 274V to 287.7V, which is acceptable for general-purpose TVS applications. Verify your circuit design tolerates the clamping voltage variation before final selection.

Q: What is the difference between the 287.7V clamping voltage of the original P6SMBJ200 and the 274V clamping voltage of most substitutes?

A: The clamping voltage difference of 13.7V represents the maximum voltage the diode will clamp transient events to at peak pulse current. Both values are within acceptable ranges for 171V standoff voltage applications. The lower clamping voltage of substitute parts provides slightly tighter voltage regulation. Confirm your circuit design can accommodate this specification before implementation.

Q: Are there any temperature range limitations I should consider?

A: The original P6SMBJ200 operates from -55°C to 150°C. Most substitutes maintain this range, while SZP6SMB200AT3G, P6SMB200AHE3_A/H, SM6T200A-E3/52, and SM6T200A-E3/5B extend the lower limit to -65°C. SMBJP6KE200A-TP extends the upper limit to 175°C. Select based on your application's thermal requirements.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is an automotive-grade qualification standard for discrete semiconductors. Parts carrying this certification (SZP6SMB200AT3G, P6SMB200AHE3_A/H, SM6T200A-E3/52, SM6T200A-E3/5B) meet stringent reliability and quality requirements for automotive applications. Use these variants if your design requires automotive-grade components.

Q: Which substitute offers the best inventory availability?

A: P6SMB200A (Meritek) provides the highest inventory with 38,905 units in stock, followed by SM6T200A with 74,790 units. Both are active products with immediate availability for production requirements.

Q: Is the packaging identical across all substitutes?

A: Yes. All substitute parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical and footprint compatibility. Packaging options vary (Tape & Reel, Cut Tape, Digi-Reel), but the component package itself remains consistent.

Q: Can I mix different substitute parts in the same design?

A: Yes. All substitutes meet the same electrical and mechanical specifications for the 171V standoff voltage class. However, maintain consistent part sourcing within a production batch to ensure uniform performance characteristics across your assembly.

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