P6SMB75CA Equivalent & Substitute Parts

Part Overview

The P6SMB75CA is a bidirectional Zener 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, 103V maximum clamping voltage, and 5.9A peak pulse current capability in a DO-214AA (SMB) package. The part is active in production, ROHS3 compliant, and suitable for applications requiring reliable overvoltage suppression across a wide operating temperature range of -55°C to 150°C.

Equivalent and substitute parts are identified based on matching electrical performance parameters, mechanical compatibility, and package specifications that ensure functional interchangeability in circuit applications.

Substiute Parts

P6SMB75CA

Littelfuse Inc.In Stock: 1578P6SMB75CA Datasheet

Current PartRFQ

TPSMB75CA

LittelfuseIn Stock: 4424TPSMB75CA Datasheet

DirectRFQ

SMBJ64CA

MeritekIn Stock: 35457SMBJ64CA Datasheet

MFR RecommendedRFQ

P6SMB75CA-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 4772P6SMB75CA-E3/52 Datasheet

DirectRFQ

SMBJP6KE75CA-TP

Micro Commercial CoIn Stock: 3778SMBJP6KE75CA-TP Datasheet

DirectRFQ

P6SMB75CA

Eaton - Electronics DivisionIn Stock: 1496P6SMB75CA Datasheet

MFR RecommendedRFQ

SM6T75CAY

STMicroelectronicsIn Stock: 22896SM6T75CAY Datasheet

MFR RecommendedRFQ

SMBJ64CA

MeritekIn Stock: 35457SMBJ64CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB75CA are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 64.0V to 64.1V
• Voltage - Clamping (Max) @ Ipp: 103V
• Current - Peak Pulse (10/1000µs): 5.8A to 5.9A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA or SMB
• Mounting Type: Surface Mount
• Type: Zener, Bidirectional, Single Channel

Compliance Requirements:

• RoHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Parts meeting these criteria are classified as direct electrical and mechanical equivalents. Variations in operating temperature range, manufacturer, or series designation do not affect functional substitutability when all primary electrical parameters and package specifications align.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Fully Interchangeable):

TPSMB75CA, SMBJ64CA, P6SMB75CA-E3/52, and SMBJP6KE75CA-TP meet all primary electrical and mechanical substitution criteria. These parts maintain identical clamping voltage (103V), equivalent reverse standoff voltage (64.0V to 64.1V), and comparable peak pulse current (5.8A to 5.9A). All are ROHS3 compliant with MSL 1 rating. Selection among these options may be based on availability, lead time, or extended operating temperature requirements. TPSMB75CA and SMBJP6KE75CA-TP offer extended upper temperature limits (-65°C to 175°C and -55°C to 175°C respectively), suitable for applications requiring broader thermal performance.

Conditional Substitute (Electrical Deviation):

SM6T75CAY exhibits higher clamping voltage (134V) and significantly higher peak pulse current (30A at 8/20µs pulse width) compared to the P6SMB75CA specification. This part is not a direct equivalent and should only be selected when circuit design specifically requires enhanced transient suppression capability and can accommodate the higher clamping voltage. The different pulse width specification (8/20µs versus 10/1000µs) indicates different application profiles.

Manufacturer Variants:

The P6SMB75CA designation appears across multiple manufacturers (Littelfuse, Eaton). The Eaton variant carries RoHS compliance (not ROHS3 specific) and is functionally equivalent for general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute TPSMB75CA for P6SMB75CA in my circuit?

A: Yes. TPSMB75CA is a direct electrical and mechanical equivalent with identical clamping voltage (103V), reverse standoff voltage (64.1V), and peak pulse current (5.9A). Both use DO-214AA SMB packaging. The TPSMB75CA offers extended operating temperature range (-65°C to 175°C versus -55°C to 150°C), making it suitable for wider thermal environments.

Q: What is the difference between P6SMB75CA and SM6T75CAY?

A: These parts differ significantly in clamping voltage and peak pulse current. P6SMB75CA clamps at 103V with 5.9A peak pulse current, while SM6T75CAY clamps at 134V with 30A peak pulse current (8/20µs). SM6T75CAY provides enhanced transient suppression but introduces higher clamping voltage into the circuit. Selection depends on specific circuit protection requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Most substitute parts listed are ROHS3 compliant. The P6SMB75CA variant from Eaton is marked as RoHS compliant without specific ROHS3 designation. Verify compliance requirements for your application before selection.

Q: Does package type affect substitutability?

A: All listed parts use DO-214AA or SMB package designation, which are equivalent mechanical packages for surface-mount applications. Package compatibility is maintained across all direct equivalents.

Q: Can I use SMBJ64CA as a substitute?

A: Yes. SMBJ64CA meets substitution criteria with 64V reverse standoff voltage, 103V clamping voltage, and 5.83A peak pulse current. Electrical parameters align within acceptable tolerance ranges for functional equivalence. ROHS3 compliance and MSL 1 rating match the original specification.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the component has unlimited shelf life under standard storage conditions and requires no special moisture control during handling or storage. This applies to all listed substitute parts.