P6SMB150A-E3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB150A-E3/5B is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates with a reverse standoff voltage of 128V and provides clamping protection at 207V maximum, with peak pulse current handling of 2.9A. The device is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

P6SMB150A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1177P6SMB150A-E3/5B Datasheet

Current PartRFQ

P6SMB150A

Good-Ark SemiconductorIn Stock: 41803P6SMB150A Datasheet

DirectRFQ

P6SMB150A

Good-Ark SemiconductorIn Stock: 41803P6SMB150A Datasheet

DirectRFQ

SM6T150A

STMicroelectronicsIn Stock: 36535SM6T150A Datasheet

DirectRFQ

SZP6SMB150AT3G

Littelfuse Inc.In Stock: 3624SZP6SMB150AT3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB150A-E3/5B are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 128V
• Voltage - Breakdown (Min): 143V
• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: 207V ± tolerance
• Current - Peak Pulse (10/1000µs): 2.9A (minimum requirement)
• Power - Peak Pulse: 600W (minimum requirement)
• Operating Temperature Range: -55°C to -65°C minimum, 150°C maximum

Substitute parts must maintain identical or superior electrical performance within the specified voltage and current ratings while preserving package compatibility and surface mount characteristics.

Parameter Comparison

Engineering Selection Recommendations

P6SMB150A (Good-Ark Semiconductor): Direct electrical equivalent with identical voltage and current ratings. Maintains -55°C to 150°C operating temperature range. RoHS3 compliant with MSL 1 rating. Suitable for general-purpose TVS applications requiring 128V standoff protection. Higher inventory availability (41,700 pcs) supports procurement continuity.

SM6T150A (STMicroelectronics): Electrical substitute with identical standoff and breakdown voltages. Operates at higher peak pulse current (15A at 8/20µs pulse width versus 2.9A at 10/1000µs). Clamping voltage reaches 265V maximum, providing enhanced transient suppression margin. Appropriate for applications requiring superior current handling or higher clamping performance. Operating temperature range -55°C to 150°C. RoHS3 compliant.

SZP6SMB150AT3G (Littelfuse Inc.): Direct electrical equivalent with identical 128V standoff, 143V breakdown, and 207V clamping specifications. Maintains -65°C to 150°C operating temperature range matching the original part. Carries AEC-Q101 automotive qualification, suitable for automotive and mission-critical applications. RoHS3 compliant with MSL 1 rating. Recommended for applications requiring automotive-grade reliability certification.

All substitute parts maintain DO-214AA (SMB) surface mount package compatibility, unidirectional zener diode topology, and RoHS3 compliance. Selection should be based on operating temperature requirements, current handling specifications, and applicable industry certifications.

Frequently Asked Questions (FAQ)

Q: Can P6SMB150A (Good-Ark) be used as a direct replacement for P6SMB150A-E3/5B (Vishay)?

A: Yes. Both parts share identical electrical specifications: 128V reverse standoff voltage, 143V minimum breakdown voltage, 207V maximum clamping voltage, and 2.9A peak pulse current. Both are RoHS3 compliant with MSL 1 rating and use DO-214AA (SMB) surface mount packaging. The primary difference is the operating temperature minimum: Good-Ark operates from -55°C while Vishay operates from -65°C. Substitution is valid for applications not requiring operation below -55°C.

Q: What is the difference between SM6T150A and the original P6SMB150A-E3/5B?

A: SM6T150A maintains identical standoff (128V) and breakdown (143V) voltages but differs in two parameters: clamping voltage reaches 265V maximum (versus 207V), and peak pulse current is rated at 15A for 8/20µs pulses (versus 2.9A for 10/1000µs pulses). These differences indicate higher transient suppression capability. Operating temperature range is -55°C to 150°C. SM6T150A is suitable when enhanced current handling or higher clamping voltage is required.

Q: Is SZP6SMB150AT3G suitable for automotive applications?

A: Yes. SZP6SMB150AT3G carries AEC-Q101 automotive qualification and is designated as automotive-grade. It maintains identical electrical specifications to the original part (128V standoff, 207V clamping, 2.9A peak pulse current) and operates across -65°C to 150°C. This part is recommended for automotive and mission-critical applications requiring formal automotive qualification.

Q: Are all substitute parts available in the same packaging?

A: Yes. All substitute parts use DO-214AA (SMB) surface mount package. This ensures mechanical and thermal compatibility with the original P6SMB150A-E3/5B in PCB layouts and assembly processes.

Q: What is the impact of different pulse width specifications (10/1000µs versus 8/20µs)?

A: Pulse width specifications define the test conditions for peak pulse current ratings. P6SMB150A-E3/5B and its direct equivalents are rated at 2.9A for 10/1000µs pulses. SM6T150A is rated at 15A for 8/20µs pulses. These represent different transient event profiles. Selection should match the actual transient pulse characteristics in the application circuit.

Q: Can I use SM6T150A if my application only requires 2.9A peak pulse current?

A: Yes. SM6T150A is rated for 15A peak pulse current, which exceeds the 2.9A requirement. The higher current rating provides design margin. However, the 265V clamping voltage (versus 207V) should be evaluated to ensure it does not exceed downstream component voltage ratings.

Q: What does RoHS3 compliance mean for these parts?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, hexavalent chromium, and specified brominated flame retardants. All listed parts are RoHS3 compliant, supporting environmental and regulatory requirements for commercial and industrial applications.

Q: How does MSL 1 (Unlimited) affect handling and storage?

A: MSL 1 (Unlimited) indicates the part has unlimited shelf life and requires no special moisture control during storage or handling. This simplifies logistics and reduces storage costs compared to higher MSL ratings requiring controlled humidity environments.