P6SMB75 Equivalent & Substitute Parts

Part Overview

The P6SMB75 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection in surface-mount applications. This component features a 64.1V reverse standoff voltage, 108.15V maximum clamping voltage, and 5.9A peak pulse current capability in a DO-214AA (SMB) package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P6SMB75

Littelfuse Inc.In Stock: 1143P6SMB75 Datasheet

Current PartRFQ

P6SMB75A

Eaton - Electronics DivisionIn Stock: 2124P6SMB75A Datasheet

MFR RecommendedRFQ

SMBJ64A

MeritekIn Stock: 23111SMBJ64A Datasheet

MFR RecommendedRFQ

P6SMB75A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 868P6SMB75A-E3/5B Datasheet

DirectRFQ

P6SMB75A

Eaton - Electronics DivisionIn Stock: 2124P6SMB75A Datasheet

MFR RecommendedRFQ

SM6T75AY

STMicroelectronicsIn Stock: 5091SM6T75AY Datasheet

MFR RecommendedRFQ

SMBJ58E3/TR13

Microchip TechnologyIn Stock: 1049SMBJ58E3/TR13 Datasheet

MFR RecommendedRFQ

SMBJ64A

MeritekIn Stock: 23111SMBJ64A Datasheet

MFR RecommendedRFQ

SMBJ64AE3/TR13

Microchip TechnologyIn Stock: 949SMBJ64AE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB75 is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 64.1V ± tolerance
• Voltage - Clamping (Max) @ Ipp: 103V to 108.15V range
• Current - Peak Pulse (10/1000µs): 5.8A to 5.9A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C minimum

Substitute parts are grouped into two categories based on electrical performance alignment:

Category A - Direct Electrical Equivalents: Parts with reverse standoff voltage of 64V to 64.1V and clamping voltage within 103V to 108.15V range, maintaining identical peak pulse current specifications.

Category B - Functional Alternatives: Parts with similar voltage protection characteristics but with variations in clamping voltage or peak pulse current that remain within acceptable application parameters for general-purpose transient suppression.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Category A - Direct Equivalents):

P6SMB75A-E3/5B (Vishay) and SMBJ64AE3/TR13 (Microchip) are the closest electrical equivalents to the P6SMB75. Both maintain the 64V to 64.1V reverse standoff voltage specification and deliver clamping voltages within the 103V range. These parts are active products with ROHS3 compliance and extended operating temperature ranges (-65°C to 150°C), providing improved thermal performance over the obsolete original part.

SMBJ64A (Meritek) provides equivalent electrical performance with 64V reverse standoff and 103V clamping voltage. This part offers the highest inventory availability (23,100 units) among active substitutes and maintains full ROHS3 compliance.

Secondary Substitute (Category B - Functional Alternative):

SM6T75AY (STMicroelectronics) maintains the 64.1V reverse standoff voltage but features a higher clamping voltage of 134V and significantly higher peak pulse current of 30A (8/20µs). This part is AEC-Q101 qualified for automotive applications and is suitable for applications requiring enhanced transient suppression capability.

SMBJ58E3/TR13 (Microchip) operates at a lower reverse standoff voltage of 58V with 103V clamping voltage and 5.8A peak pulse current. This part is appropriate for lower-voltage protection circuits and offers extended temperature range (-65°C to 150°C).

All substitute parts are active products with current manufacturing status and full RoHS compliance, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can P6SMB75A-E3/5B directly replace the P6SMB75?

A: Yes. Both parts share identical reverse standoff voltage (64.1V), equivalent clamping voltage (103V vs. 108.15V), and matching peak pulse current (5.8A vs. 5.9A). The P6SMB75A-E3/5B is packaged in DO-214AA (SMB) and offers extended operating temperature range (-65°C to 150°C). Tape & Reel packaging is available.

Q: What is the difference between SMBJ64A and SMBJ64AE3/TR13?

A: Both parts deliver identical electrical specifications: 64V reverse standoff, 103V clamping voltage, and 5.8A peak pulse current in DO-214AA (SMB) package. SMBJ64AE3/TR13 is supplied by Microchip Technology in Tape & Reel packaging with extended temperature range (-65°C to 150°C). SMBJ64A is supplied by Meritek with standard temperature range (-55°C to 150°C).

Q: Why does SM6T75AY have higher peak pulse current (30A) than the original P6SMB75 (5.9A)?

A: SM6T75AY uses a different pulse waveform specification (8/20µs) compared to the P6SMB75 (10/1000µs). The higher current rating reflects the different transient profile. This part is suitable for applications requiring enhanced transient suppression and is AEC-Q101 qualified for automotive use.

Q: Is SMBJ58E3/TR13 compatible with the P6SMB75 application?

A: SMBJ58E3/TR13 operates at a lower reverse standoff voltage (58V vs. 64.1V) and is suitable only for circuits designed for lower-voltage protection. It maintains equivalent clamping voltage (103V) and peak pulse current (5.8A). Verify circuit voltage requirements before substitution.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: What packaging options are available for substitute parts?

A: P6SMB75A-E3/5B, SM6T75AY, SMBJ58E3/TR13, and SMBJ64AE3/TR13 are available in Tape & Reel (TR) packaging. SMBJ64A is available in standard packaging. All parts use DO-214AA (SMB) surface-mount package format.