P6SMB220 Equivalent & Substitute Parts

Part Overview

The P6SMB220 is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) surface mount package manufactured by Littelfuse Inc. This component is designed for general-purpose transient voltage suppression with a reverse standoff voltage of 185V and peak pulse power rating of 600W. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements. Active alternatives from multiple manufacturers provide compatible electrical and mechanical characteristics suitable for direct replacement in existing applications.

Substiute Parts

P6SMB220

Littelfuse Inc.In Stock: 2163P6SMB220 Datasheet

Current PartRFQ

P6SMB220A

Eaton - Electronics DivisionIn Stock: 36253P6SMB220A Datasheet

MFR RecommendedRFQ

P6SMB220A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 938P6SMB220A-E3/5B Datasheet

DirectRFQ

P6SMB220A

Eaton - Electronics DivisionIn Stock: 36253P6SMB220A Datasheet

MFR RecommendedRFQ

P6SMB220A-M3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 821P6SMB220A-M3/52 Datasheet

MFR RecommendedRFQ

P6SMB220A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 735P6SMB220A-M3/5B Datasheet

MFR RecommendedRFQ

SM6T220A

STMicroelectronicsIn Stock: 10218SM6T220A Datasheet

MFR RecommendedRFQ

SMBJP6KE220A-TP

Micro Commercial CoIn Stock: 2199SMBJP6KE220A-TP Datasheet

MFR RecommendedRFQ

TVP06B221A-G

Comchip TechnologyIn Stock: 1052TVP06B221A-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB220 is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 185V
• Voltage - Breakdown (Min): 198V minimum
• Voltage - Clamping (Max) @ Ipp: Maximum allowable clamp voltage
• Current - Peak Pulse (10/1000µs): 1.9A minimum
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB (surface mount)
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional

All substitute parts listed maintain the 185V reverse standoff voltage specification and 600W peak pulse power rating. Substitute parts are grouped by manufacturer and packaging configuration while preserving electrical compatibility within the specified parameter ranges. Parts with identical or superior electrical ratings and the same surface mount package are considered direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active products with ROHS3 or RoHS compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original P6SMB220 compliance profile.

Primary Substitutes (Closest Electrical Match): P6SMB220A (Eaton), P6SMB220A-E3/5B (Vishay), P6SMB220A-M3/52 (Vishay), P6SMB220A-M3/5B (Vishay), SMBJP6KE220A-TP (Micro Commercial Co), and TVP06B221A-G (Comchip Technology) maintain the 185V reverse standoff voltage and 600W power rating with clamping voltages of 328V and peak pulse currents between 1.8A and 1.9A. These parts are electrically equivalent for general-purpose transient suppression applications.

Alternative Substitute (Higher Current Capability): SM6T220A (STMicroelectronics) provides a 188V reverse standoff voltage with significantly higher peak pulse current of 10.3A (8/20µs) and 388V clamping voltage. This part is suitable for applications requiring enhanced transient suppression capability while maintaining the same 600W power rating and surface mount package.

Packaging Considerations: Eaton P6SMB220A is available in Cut Tape (CT) & Digi-Reel® packaging. Vishay variants (P6SMB220A-E3/5B, P6SMB220A-M3/52, P6SMB220A-M3/5B) are supplied in Tape & Reel (TR) or Tape & Box (TB) configurations. STMicroelectronics SM6T220A and Micro Commercial Co SMBJP6KE220A-TP are supplied in Tape & Reel (TR). Comchip Technology TVP06B221A-G is supplied in Tape & Reel (TR).

Frequently Asked Questions (FAQ)

Q: Can P6SMB220A directly replace P6SMB220? A: Yes. P6SMB220A maintains the 185V reverse standoff voltage, 600W peak pulse power, and DO-214AA (SMB) surface mount package. The clamping voltage is lower (328V vs 344.4V), which provides improved transient suppression performance. Both parts are RoHS compliant with MSL 1 rating.

Q: What is the difference between P6SMB220A variants from Vishay (E3/5B, M3/52, M3/5B)? A: These variants differ in packaging configuration and tape specifications. P6SMB220A-E3/5B is supplied in Tape & Reel (TR). P6SMB220A-M3/52 and P6SMB220A-M3/5B are supplied in Tape & Box (TB). All three maintain identical electrical specifications: 185V reverse standoff, 328V clamping, 1.8A peak pulse current, and -65 to 150°C operating temperature range.

Q: Why does SM6T220A have higher peak pulse current (10.3A) than other substitutes? A: SM6T220A is from the SM6T TRANSIL™ series, which is designed for higher current transient suppression. While it maintains the 185V nominal voltage class and 600W power rating, the higher current capability (10.3A vs 1.8-1.9A) makes it suitable for applications with more severe transient events. The 388V clamping voltage is also higher, reflecting its enhanced suppression capability.

Q: Are all substitute parts available in the same DO-214AA (SMB) package? A: Yes. All substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility with the original P6SMB220 design.

Q: What is the operating temperature range difference between substitutes? A: Most substitutes operate from -55 to 150°C. Vishay variants (P6SMB220A-E3/5B, P6SMB220A-M3/52, P6SMB220A-M3/5B) extend the lower temperature limit to -65°C. SMBJP6KE220A-TP extends the upper temperature limit to 175°C. Select based on your application's thermal requirements.

Q: Are all substitutes RoHS compliant? A: Yes. All listed substitute parts are ROHS3 compliant or RoHS compliant, matching the original P6SMB220 compliance status. All parts have MSL 1 (Unlimited) moisture sensitivity rating.