P6SMB350A-M3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB350A-M3/5B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates with a 300V reverse standoff voltage and provides 482V maximum clamping voltage at peak pulse current, delivering 600W peak pulse power dissipation in a surface mount DO-214AA (SMB) package. The part is Active status and RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the TVS diode category.

Substiute Parts

P6SMB350A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1041P6SMB350A-M3/5B Datasheet

Current PartRFQ

P6SMB350A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 3678P6SMB350A-M3/52 Datasheet

DirectRFQ

P6SMB350A

Eaton - Electronics DivisionIn Stock: 19666P6SMB350A Datasheet

MFR RecommendedRFQ

P6SMB350A

Eaton - Electronics DivisionIn Stock: 19666P6SMB350A Datasheet

MFR RecommendedRFQ

SMBJ300A

Good-Ark SemiconductorIn Stock: 15468SMBJ300A Datasheet

MFR RecommendedRFQ

SMBJ300A

Good-Ark SemiconductorIn Stock: 15468SMBJ300A Datasheet

MFR RecommendedRFQ

SMBJ350A

MeritekIn Stock: 30440SMBJ350A Datasheet

MFR RecommendedRFQ

SMBJP6KE350A-TP

Micro Commercial CoIn Stock: 6203SMBJP6KE350A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB350A-M3/5B are grouped based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 300V
• Voltage - Clamping (Max) @ Ipp: 482V (±tolerance)
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional

Acceptable Variation Parameters:

• Current - Peak Pulse (10/1000µs): 1.24A to 1.3A
• Voltage - Breakdown (Min): 332V to 335V
• Operating Temperature Range: -55°C to -65°C minimum; 150°C maximum

Secondary Substitutes (Different Voltage Rating):

• SMBJ350A: 350V reverse standoff (higher voltage rating, different application profile)

Parts meeting all primary criteria are direct substitutes. Parts with different voltage ratings are listed as alternatives for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical Performance):

P6SMB350A-M3/52, P6SMB350A (Eaton), SMBJ300A, and SMBJP6KE350A-TP are functionally equivalent to the P6SMB350A-M3/5B. All parts maintain 300V reverse standoff voltage, 482V clamping voltage (within tolerance), and 600W peak pulse power. All are Active status and RoHS3 compliant. Selection among these substitutes depends on packaging availability (Tape & Box vs. Cut Tape vs. Tape & Reel) and inventory requirements.

Extended Temperature Range Option:

SMBJP6KE350A-TP offers an extended upper operating temperature of 175°C compared to the standard 150°C maximum, providing additional thermal margin for high-temperature applications while maintaining electrical equivalence.

Alternative Voltage Rating:

SMBJ350A (Meritek) provides a higher 350V reverse standoff voltage with 567V clamping voltage. This part is suitable only for applications requiring higher voltage suppression and is not a direct substitute for 300V standoff applications.

All substitute parts are Active status and meet RoHS3 compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can P6SMB350A-M3/52 be used as a direct replacement for P6SMB350A-M3/5B?

A: Yes. Both parts are manufactured by Vishay with identical electrical specifications: 300V reverse standoff, 333V breakdown minimum, 482V clamping voltage, 1.24A peak pulse current, and 600W peak pulse power. The difference is packaging format: M3/5B is Tape & Box while M3/52 is Cut Tape. Electrical performance and PCB compatibility are identical.

Q: What is the difference between the Eaton P6SMB350A and the Vishay P6SMB350A-M3/5B?

A: Both maintain 300V reverse standoff and 482V clamping voltage. The Eaton part has slightly higher peak pulse current (1.3A vs. 1.24A) and a reduced minimum operating temperature (-55°C vs. -65°C). For applications within -55°C to 150°C range, the Eaton part is electrically compatible. Verify thermal requirements for your specific application.

Q: Is SMBJ300A compatible with P6SMB350A-M3/5B?

A: SMBJ300A (Good-Ark) is electrically compatible. It maintains 300V reverse standoff and 600W peak pulse power. Clamping voltage is 486V (vs. 482V), which is within acceptable tolerance for TVS applications. Peak pulse current is 1.3A (vs. 1.24A). Operating temperature range is -55°C to 150°C. Verify application requirements before substitution.

Q: Why is SMBJ350A listed as a substitute if it has different voltage ratings?

A: SMBJ350A is listed as an alternative, not a direct substitute. It provides 350V reverse standoff and 567V clamping voltage—higher ratings than the 300V/482V of the P6SMB350A-M3/5B. Use SMBJ350A only in applications requiring higher voltage suppression. It is not suitable for 300V standoff circuits.

Q: What does "Tape & Box" vs. "Cut Tape" vs. "Tape & Reel" packaging mean?

A: These refer to supply formats: Tape & Box (TB) provides components on tape in a box for manual handling; Cut Tape (CT) provides individual tape strips; Tape & Reel (TR) provides continuous tape on reels for automated assembly. All formats contain identical components. Selection depends on assembly process and volume requirements.

Q: Can I use SMBJP6KE350A-TP in applications requiring -65°C minimum temperature?

A: No. SMBJP6KE350A-TP operates from -55°C minimum, not -65°C. If your application requires -65°C operation, use P6SMB350A-M3/5B or P6SMB350A-M3/52 (both rated to -65°C). Verify your actual operating temperature range before selecting a substitute.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant, matching the compliance status of the P6SMB350A-M3/5B. All parts are also REACH unaffected and classified as EAR99 for export purposes.