SZP6SMB62CAT3G Equivalent & Substitute Parts

Part Overview

The SZP6SMB62CAT3G is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for surface mount applications in the DO-214AA (SMB) package. This bidirectional Zener diode operates with a 53V reverse standoff voltage and 85V maximum clamping voltage, delivering 7.1A peak pulse current at 600W peak pulse power. The device is AEC-Q101 qualified for automotive applications and maintains active product status with 1583 units in current inventory.

Equivalent and substitute parts are identified based on matching electrical characteristics (voltage ratings, clamping specifications, and peak pulse current) and mechanical compatibility (surface mount packaging, DO-214AA/SMB form factor). Substitutes enable design flexibility, supply chain optimization, and sourcing alternatives from qualified manufacturers.

Substiute Parts

SZP6SMB62CAT3G

Littelfuse Inc.In Stock: 1629SZP6SMB62CAT3G Datasheet

Current PartRFQ

1KSMB62CA

Taiwan Semiconductor CorporationIn Stock: 94081KSMB62CA Datasheet

MFR RecommendedRFQ

P6SMB62CA

Eaton - Electronics DivisionIn Stock: 61426P6SMB62CA Datasheet

MFR RecommendedRFQ

TPSMB62CA

Littelfuse Inc.In Stock: 6507TPSMB62CA Datasheet

MFR RecommendedRFQ

SMBJP6KE62CA-TP

Micro Commercial CoIn Stock: 3511SMBJP6KE62CA-TP Datasheet

UpgradeRFQ

P6SMB62CA

Eaton - Electronics DivisionIn Stock: 61426P6SMB62CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SZP6SMB62CAT3G is determined by the following critical parameters:

• Voltage - Reverse Standoff: 53V (±tolerance)
• Voltage - Breakdown (Min): 58.9V
• Voltage - Clamping (Max) @ Ipp: 85V
• Current - Peak Pulse (10/1000µs): 7.1A minimum
• Power - Peak Pulse: 600W minimum
• Package / Case: DO-214AA or SMB equivalent
• Mounting Type: Surface Mount
• Bidirectional Channels: 1
• Type: Zener

All identified substitute parts maintain these core electrical specifications within the allowed tolerance range. Peak pulse current values of 7.2A and 11.8A exceed the minimum 7.1A requirement and remain compatible. Operating temperature ranges and compliance certifications vary by manufacturer but do not affect electrical substitutability for the specified voltage and current ratings.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Manufacturer Recommended):

1KSMB62CA (Taiwan Semiconductor Corporation) — Delivers 11.8A peak pulse current and 1000W peak pulse power, exceeding the SZP6SMB62CAT3G specifications. Operates across -55 to 175°C temperature range. ROHS3 compliant. Suitable for applications requiring enhanced transient suppression capability within the same voltage class.

P6SMB62CA (Eaton - Electronics Division) — Matches 7.2A peak pulse current and 600W power rating with identical voltage specifications. Operates -55 to 150°C. RoHS compliant. Recommended for direct pin-compatible replacement in telecom applications.

TPSMB62CA (Littelfuse Inc.) — Delivers 7.2A peak pulse current and 600W power. Extends operating temperature to -65 to 175°C. AEC-Q101 qualified for automotive applications, matching the original part's automotive grade. ROHS3 compliant. Preferred for automotive designs requiring equivalent qualification status.

Upgrade Option:

SMBJP6KE62CA-TP (Micro Commercial Co) — Provides 7.2A peak pulse current and 600W power across -55 to 175°C. ROHS3 compliant. Offers extended temperature range and general-purpose application flexibility.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance or equivalent RoHS certification. The SZP6SMB62CAT3G and TPSMB62CA share AEC-Q101 automotive qualification; substitutes without this certification are suitable for non-automotive or general industrial applications. REACH status varies; TPSMB62CA is REACH Affected while others are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can I use 1KSMB62CA as a direct replacement for SZP6SMB62CAT3G?

A: Yes. The 1KSMB62CA maintains identical voltage ratings (53V standoff, 85V clamping) and exceeds the peak pulse current requirement (11.8A vs. 7.1A). Both use DO-214AA (SMB) surface mount packaging. The higher current rating provides additional transient suppression margin.

Q: What is the difference between P6SMB62CA and TPSMB62CA?

A: Both deliver 7.2A peak pulse current and 600W power with matching voltage specifications. P6SMB62CA (Eaton) operates -55 to 150°C and is RoHS compliant. TPSMB62CA (Littelfuse) extends to -65 to 175°C and carries AEC-Q101 automotive qualification. Select TPSMB62CA for automotive applications requiring the same qualification as the original part.

Q: Are all substitute parts in the same package?

A: Yes. All substitute parts use DO-214AA or SMB equivalent surface mount packaging, ensuring mechanical and footprint compatibility with the SZP6SMB62CAT3G.

Q: Does the higher peak pulse current of 1KSMB62CA affect circuit compatibility?

A: No. Higher peak pulse current (11.8A vs. 7.1A) and power rating (1000W vs. 600W) indicate enhanced transient suppression capability. The device clamps at the same 85V maximum voltage, maintaining circuit protection characteristics.

Q: Which substitute is best for automotive applications?

A: TPSMB62CA is the recommended choice for automotive designs. It carries AEC-Q101 qualification matching the original SZP6SMB62CAT3G, extends operating temperature to 175°C, and maintains ROHS3 compliance.

Q: Can I use these substitutes in high-temperature environments?

A: TPSMB62CA, 1KSMB62CA, and SMBJP6KE62CA-TP all operate to 175°C, exceeding the original part's 150°C maximum. P6SMB62CA is limited to 150°C, matching the original specification.

Q: What is the inventory status of substitute parts?

A: 1KSMB62CA: 9300 units; P6SMB62CA: 61400 units; TPSMB62CA: 6487 units; SMBJP6KE62CA-TP: 3424 units. All are in active production with new original stock available.