P6SMB43A-M3/5B Equivalent & Substitute Parts

Part Overview

The P6SMB43A-M3/5B is a unidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 36.8V reverse standoff voltage class and provides 59.3V clamping protection at peak pulse currents. The part is active in production and widely used in general-purpose transient suppression applications. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity across manufacturing sources.

Substiute Parts

P6SMB43A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1044P6SMB43A-M3/5B Datasheet

Current PartRFQ

P6SMB43A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 1199P6SMB43A-E3/52 Datasheet

DirectRFQ

1KSMB43A

Taiwan Semiconductor CorporationIn Stock: 421771KSMB43A Datasheet

MFR RecommendedRFQ

P6SMB43A

Eaton - Electronics DivisionIn Stock: 148264P6SMB43A Datasheet

MFR RecommendedRFQ

P6SMB43A

Eaton - Electronics DivisionIn Stock: 148264P6SMB43A Datasheet

MFR RecommendedRFQ

TPSMB43A

Littelfuse Inc.In Stock: 3334TPSMB43A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diodes in the P6SMB43 series is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Voltage - Reverse Standoff (Typ): 36.8V
• Voltage - Breakdown (Min): 40.9V
• Voltage - Clamping (Max) @ Ipp: 59.3V
• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Acceptable Variation Parameters:

• Current - Peak Pulse (10/1000µs): ≥10.1A (higher values acceptable)
• Power - Peak Pulse: ≥600W (higher values acceptable)
• Operating Temperature Range: Minimum -55°C acceptable (original -65°C); Maximum ≥150°C acceptable
• Packaging Format: Tape & Reel (TR) or Tape & Box (TB) acceptable

All identified substitute parts maintain identical voltage specifications and package form factor, ensuring direct functional and mechanical compatibility. Differences in peak pulse current and power dissipation represent enhanced performance characteristics that do not compromise substitution validity.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts are active products with full RoHS compliance and MSL 1 rating, confirming suitability for direct replacement in the P6SMB43A voltage class.

P6SMB43A-E3/52 (Vishay): Identical electrical and thermal specifications to the main part. Packaging format differs only in tape & reel configuration versus tape & box. Recommended for applications requiring Vishay sourcing continuity.

1KSMB43A (Taiwan Semiconductor): Maintains all critical voltage parameters with enhanced peak pulse current (16.9A) and power dissipation (1000W). Extended upper operating temperature to 175°C. Suitable for applications with higher transient energy requirements or elevated ambient conditions.

P6SMB43A (Eaton): Equivalent voltage and power specifications with marginally higher peak pulse current (10.3A). Operating temperature minimum of -55°C acceptable for most applications. Recommended for applications requiring Eaton component sourcing.

TPSMB43A (Littelfuse): Meets all electrical specifications with extended upper operating temperature to 175°C. Carries AEC-Q101 automotive qualification and REACH Affected designation. Recommended for automotive and high-reliability applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can P6SMB43A-E3/5B replace P6SMB43A-M3/5B? A: Yes. Both parts are Vishay P6SMB43A devices with identical electrical specifications (36.8V standoff, 59.3V clamping, 10.1A peak pulse). The difference is packaging format: E3/52 uses tape & reel while M3/5B uses tape & box. Electrical performance and mechanical compatibility are equivalent.

Q: Is 1KSMB43A a suitable substitute despite higher peak pulse current? A: Yes. The 1KSMB43A maintains all critical voltage parameters (36.8V standoff, 40.9V breakdown, 59.3V clamping) and uses the same DO-214AA SMB package. The higher peak pulse current (16.9A versus 10.1A) and power rating (1000W versus 600W) represent enhanced performance that does not compromise substitution validity. The component will function identically in circuits designed for the P6SMB43A-M3/5B.

Q: What is the difference between Tape & Reel and Tape & Box packaging? A: Both formats contain the same component in the same DO-214AA SMB package. Tape & Reel (TR) is supplied on continuous reel for automated assembly lines. Tape & Box (TB) is supplied in tape format within a box for manual or lower-volume assembly. Electrical and mechanical specifications are identical.

Q: Can TPSMB43A be used in non-automotive applications? A: Yes. TPSMB43A meets all electrical specifications for the P6SMB43 voltage class and uses the same surface mount package. AEC-Q101 automotive qualification indicates enhanced reliability testing but does not restrict use to automotive applications. The component is suitable for general-purpose transient suppression.

Q: Are there temperature range differences that affect substitution? A: The main part operates -65°C to 150°C. Substitute parts operate within -55°C to 175°C ranges. For applications within -65°C to 150°C, all substitutes are fully compatible. For applications requiring -65°C minimum or 175°C maximum, specific part selection is required based on the stated operating range.

Q: Do all substitute parts have the same RoHS compliance status? A: All substitute parts are RoHS compliant. The main part and most substitutes carry ROHS3 designation. Eaton's P6SMB43A carries RoHS Compliant designation. Both compliance levels are acceptable for equivalent substitution.