SACB36 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SACB36 is a unidirectional Zener-type transient voltage suppressor manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 36V reverse standoff voltage with a 60V maximum clamping voltage and 8.6A peak pulse current capability in the SMB (DO-214AA) package. The part maintains active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical performance parameters and mechanical compatibility within the SMB package form factor.

Substiute Parts

SACB36

Littelfuse Inc.In Stock: 3649SACB36 Datasheet

Current PartRFQ

SM6T42AY

STMicroelectronicsIn Stock: 28042SM6T42AY Datasheet

MFR RecommendedRFQ

SMB10J36A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 2625SMB10J36A-E3/52 Datasheet

MFR RecommendedRFQ

SMBJ36A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 4231SMBJ36A-E3/5B Datasheet

MFR RecommendedRFQ

SMBJ36A-TP

Micro Commercial CoIn Stock: 3075SMBJ36A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SACB36 are qualified based on the following electrical and mechanical criteria:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 36V
• Voltage - Breakdown (Min): 40V
• Package / Case: DO-214AA, SMB (surface mount)
• Unidirectional Channels: 1
• Type: Zener
• RoHS3 Compliance
• Operating Temperature Range: -55°C minimum to 150°C minimum

Secondary Performance Parameters:

• Voltage - Clamping (Max) @ Ipp: 58.1V to 76V (acceptable range for 36V standoff class)
• Current - Peak Pulse: 8.6A to 52A (dependent on application requirements)
• Power - Peak Pulse: 500W to 1000W (dependent on thermal design)

All substitute parts maintain the same reverse standoff voltage class and package footprint, ensuring direct mechanical and electrical compatibility for general-purpose transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full RoHS3 compliance, qualifying them for direct replacement in applications requiring 36V standoff voltage protection. Selection among substitutes depends on application-specific current and power dissipation requirements:

SMBJ36A-TP (Micro Commercial Co): Suitable for applications with standard current requirements (10.3A peak pulse) and extended operating temperature range to 175°C. Offers cost-effective general-purpose protection.

SMBJ36A-E3/5B (Vishay General Semiconductor): Provides equivalent performance to SMBJ36A-TP with 10.3A peak pulse current and 600W power dissipation. TransZorb® series qualification ensures automotive-grade reliability for general-purpose applications.

SMB10J36A-E3/52 (Vishay General Semiconductor): Delivers higher current handling (17.2A peak pulse) and maximum power dissipation (1000W), suitable for applications requiring enhanced transient suppression capability. TransZorb® series designation indicates automotive-grade performance.

SM6T42AY (STMicroelectronics): Automotive-qualified component (AEC-Q101) with highest peak pulse current (52A at 8/20µs) and 600W power dissipation. Recommended for high-energy transient environments requiring automotive-grade reliability.

Frequently Asked Questions (FAQ)

Q: Can SACB36 be directly replaced with any of these substitute parts?

A: Yes, all listed substitute parts share the same 36V reverse standoff voltage, 40V minimum breakdown voltage, and DO-214AA (SMB) package footprint. Direct mechanical and electrical substitution is supported for general-purpose transient suppression applications.

Q: What is the difference between the clamping voltage specifications?

A: Clamping voltage varies between 58.1V and 76V across substitutes while maintaining the same 36V standoff class. This variation reflects different device designs and manufacturing processes. Selection should be based on application circuit requirements for maximum allowable transient voltage.

Q: Are there temperature rating differences among substitutes?

A: SMBJ36A-TP extends the upper operating temperature to 175°C compared to 150°C for other parts. This extended range is beneficial for high-temperature environments but not required for standard applications.

Q: What does AEC-Q101 qualification mean for SM6T42AY?

A: AEC-Q101 certification indicates the component meets automotive industry reliability and quality standards. This qualification is relevant only if your application requires automotive-grade components.

Q: How do peak pulse current ratings affect component selection?

A: Peak pulse current ratings (8.6A to 52A) indicate the maximum transient current the device can suppress. Higher ratings provide greater protection margin for high-energy transient events. Selection should match or exceed the maximum expected transient current in your circuit.

Q: Is the SMB package compatible across all substitute parts?

A: Yes, all parts use the DO-214AA (SMB) package designation, ensuring identical PCB footprint and mounting compatibility. No layout modifications are required for substitution.