P6SMB150C Equivalent & Substitute Parts

Part Overview

The P6SMB150C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection applications. This part operates with a reverse standoff voltage of 128V and provides clamping at 217.35V maximum. The P6SMB150C is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new designs.

Substiute Parts

P6SMB150C

LittelfuseIn Stock: 935P6SMB150C Datasheet

Current PartRFQ

P6SMB150CA

Eaton - Electronics DivisionIn Stock: 16225P6SMB150CA Datasheet

MFR RecommendedRFQ

P6SMB150CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 9156P6SMB150CA-E3/52 Datasheet

DirectRFQ

P6SMB150CA

Eaton - Electronics DivisionIn Stock: 16225P6SMB150CA Datasheet

MFR RecommendedRFQ

P6SMB150CA-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 866P6SMB150CA-M3/52 Datasheet

MFR RecommendedRFQ

P6SMB150CA-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 983P6SMB150CA-M3/5B Datasheet

MFR RecommendedRFQ

SM6T150CA

STMicroelectronicsIn Stock: 8911SM6T150CA Datasheet

MFR RecommendedRFQ

SMBJP6KE150CA-TP

Micro Commercial CoIn Stock: 8289SMBJP6KE150CA-TP Datasheet

MFR RecommendedRFQ

TVP06B151CA-G

Comchip TechnologyIn Stock: 942TVP06B151CA-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB150C is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Reverse Standoff Voltage: 128V (Typ)
• Bidirectional Channels: 1
• Type: Zener
• Mounting Type: Surface Mount
• Package / Case: DO-214AA, SMB
• Peak Pulse Power: 600W
• Moisture Sensitivity Level: 1 (Unlimited)

Acceptable Variation Parameters:

• Voltage - Clamping (Max) @ Ipp: Range 207V to 265V (within application tolerance)
• Voltage - Breakdown (Min): Range 135.45V to 143V
• Current - Peak Pulse: 2.9A to 15A (higher current capability acceptable)
• Operating Temperature Range: -55°C to -65°C minimum; 150°C to 175°C maximum

Substitute parts must maintain the same reverse standoff voltage, package type, and core electrical function. Variations in clamping voltage and peak pulse current represent acceptable performance enhancements or alternative specifications within the same product category.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status, ensuring long-term availability and manufacturing support. Selection among equivalents should be based on the following criteria:

Primary Recommendation: P6SMB150CA (Eaton - Electronics Division) or P6SMB150CA-E3/52 (Vishay) represent direct electrical equivalents with identical peak pulse current ratings (2.9A) and clamping characteristics (207V). Both manufacturers maintain active production status and ROHS3 compliance.

Alternative with Enhanced Performance: SM6T150CA (STMicroelectronics) provides higher peak pulse current capability (15A) and elevated clamping voltage (265V) while maintaining the same reverse standoff voltage and package format. This part is suitable for applications requiring additional transient energy absorption capacity.

Secondary Alternatives: P6SMB150CA-M3/52, P6SMB150CA-M3/5B (Vishay), SMBJP6KE150CA-TP (Micro Commercial Co), and TVP06B151CA-G (Comchip Technology) all meet electrical equivalence requirements with identical or near-identical specifications. Selection among these options may be determined by packaging format preference (Tape & Reel versus Tape & Box) and supplier availability.

All substitute parts comply with ROHS3 or equivalent RoHS standards and maintain MSL 1 (Unlimited) moisture sensitivity classification, ensuring compatibility with standard manufacturing and storage conditions.

Frequently Asked Questions (FAQ)

Q: Can P6SMB150CA directly replace P6SMB150C in existing designs?

A: Yes. P6SMB150CA maintains identical reverse standoff voltage (128V), peak pulse power (600W), peak pulse current (2.9A), and package format (DO-214AA, SMB). The clamping voltage specification (207V versus 217.35V) represents a minor variation within acceptable application tolerance for general-purpose overvoltage protection.

Q: What is the difference between P6SMB150CA and SM6T150CA?

A: Both parts share the same reverse standoff voltage (128V) and package (DO-214AA, SMB). SM6T150CA provides enhanced performance with peak pulse current of 15A (versus 2.9A) and clamping voltage of 265V (versus 207V). SM6T150CA is suitable for applications requiring higher transient energy absorption. Standard applications requiring 2.9A capability should use P6SMB150CA.

Q: Are packaging variations (Tape & Reel versus Tape & Box) electrically equivalent?

A: Yes. Packaging format differences (TR, TB, CT) represent only handling and delivery variations. Electrical specifications and performance characteristics remain identical across all packaging options for the same part number base.

Q: Does the operating temperature range affect substitution compatibility?

A: Operating temperature ranges vary slightly among substitutes (-55°C to -65°C minimum; 150°C to 175°C maximum). For applications operating within -55°C to 150°C, all listed substitutes are compatible. Applications requiring extended temperature operation to 175°C should specify SMBJP6KE150CA-TP or Vishay variants (P6SMB150CA-E3/52, P6SMB150CA-M3/52, P6SMB150CA-M3/5B).

Q: Is RoHS compliance consistent across all substitutes?

A: All substitute parts comply with RoHS regulations. Most are ROHS3 compliant. P6SMB150CA (Eaton) carries standard RoHS compliance. Both certifications are acceptable for applications requiring RoHS-compliant components.

Q: What inventory considerations apply to part selection?

A: P6SMB150CA (Eaton) maintains the highest inventory level (16,190 pcs), followed by SM6T150CA (8,830 pcs) and SMBJP6KE150CA-TP (8,211 pcs). Remaining alternatives maintain inventory levels between 845 and 9,100 pcs. Inventory availability should be confirmed with suppliers for production requirements.