SZ1SMB64CAT3G Equivalent & Substitute Parts

Part Overview

The SZ1SMB64CAT3G is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for surface mount applications in the SMB package. This component provides transient voltage protection with a 64V reverse standoff voltage and 103V maximum clamping voltage. The part is actively produced and maintains AEC-Q101 automotive qualification status. Substitute parts are identified to provide equivalent electrical performance and mechanical compatibility for applications requiring TVS protection in the same form factor and voltage rating.

Substiute Parts

SZ1SMB64CAT3G

LittelfuseIn Stock: 833SZ1SMB64CAT3G Datasheet

Current PartRFQ

SMBJE64CAH

Eaton - Electronics DivisionIn Stock: 5927SMBJE64CAH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SZ1SMB64CAT3G is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 64V
• Voltage - Breakdown (Min): 71.1V
• Voltage - Clamping (Max) @ Ipp: 103V
• Current - Peak Pulse (10/1000µs): 5.8A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB (surface mount)
• Type: Zener, Bidirectional (1 channel)
• Mounting Type: Surface Mount
• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant

The SMBJE64CAH from Eaton - Electronics Division meets all electrical and mechanical requirements for direct substitution. Both parts share identical voltage ratings, peak pulse current specifications, power dissipation capability, and automotive-grade qualification. Package compatibility is confirmed through the DO-214AA (SMB) form factor used by both manufacturers.

Parameter Comparison

Engineering Selection Recommendations

Both the SZ1SMB64CAT3G and SMBJE64CAH are active production components with identical electrical specifications and automotive-grade AEC-Q101 qualification. Selection between these parts is based on availability, supply chain requirements, and procurement preferences. Both parts maintain ROHS3 compliance and are suitable for applications requiring 64V standoff voltage protection with 5.8A peak pulse current capability in surface mount SMB packaging. The identical voltage ratings, clamping characteristics, and power dissipation specifications ensure functional equivalence in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can SMBJE64CAH replace SZ1SMB64CAT3G in existing designs?

A: Yes. Both parts share identical electrical specifications including 64V reverse standoff voltage, 71.1V minimum breakdown voltage, 103V maximum clamping voltage, and 5.8A peak pulse current. Both use the DO-214AA (SMB) surface mount package and maintain AEC-Q101 automotive qualification.

Q: Are there differences in operating temperature ranges?

A: The SZ1SMB64CAT3G operates from -65°C to 150°C, while the SMBJE64CAH operates from -55°C to 150°C. Applications requiring operation below -55°C must use the SZ1SMB64CAT3G.

Q: Do both parts have identical package dimensions?

A: Both parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and footprint compatibility on PCBs designed for either component.

Q: Are both parts RoHS compliant?

A: Yes. Both the SZ1SMB64CAT3G and SMBJE64CAH are ROHS3 compliant and REACH unaffected.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage and handling.