SP0502BAHT Equivalent & Substitute Parts

Part Overview

The SP0502BAHT is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 5.5V reverse standoff voltage and 8.5V maximum clamping voltage in a compact SOT-23-3 package. The part is classified as obsolete, making equivalent or substitute components necessary for new designs and ongoing production requirements.

Substiute Parts

SP0502BAHT

LittelfuseIn Stock: 7354SP0502BAHT Datasheet

Current PartRFQ

SP0502BAHTG

Littelfuse Inc.In Stock: 53186SP0502BAHTG Datasheet

DirectRFQ

ESD24VS2UE6327HTSA1

Infineon TechnologiesIn Stock: 123135ESD24VS2UE6327HTSA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SP0502BAHT is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Unidirectional channel configuration (2 channels required)
• Voltage - Reverse Standoff: 5.5V (Max)
• Voltage - Clamping (Max) @ Ipp: 8.5V
• Package / Case: SOT-23-3 (surface mount)
• Mounting Type: Surface Mount

Substitute Categories:

1. Direct Equivalent (SP0502BAHTG): Identical electrical specifications and package. Differs only in product status (Active vs. Obsolete) and RoHS compliance status.

2. Functional Alternative (ESD24VS2UE6327HTSA1): Different voltage ratings (24V standoff, 41V clamping) and higher performance specifications. Same package type (SOT-23-3) but not electrically interchangeable due to voltage parameter differences.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

SP0502BAHTG is the recommended direct substitute for SP0502BAHT. Both components share identical electrical specifications (5.5V standoff, 8.5V clamping) and package configuration. SP0502BAHTG offers the advantage of Active product status and ROHS3 compliance, making it suitable for new designs and production environments with RoHS requirements.

For Alternative Applications (Different Voltage Requirements):

ESD24VS2UE6327HTSA1 is suitable only for applications requiring higher voltage protection (24V standoff, 41V clamping). This component is not interchangeable with SP0502BAHT in circuits designed for 5.5V/8.5V protection levels. Selection of this alternative requires circuit redesign and validation.

Compliance Considerations:

SP0502BAHT is RoHS non-compliant. Both substitute options (SP0502BAHTG and ESD24VS2UE6327HTSA1) are ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can SP0502BAHTG be used as a direct replacement for SP0502BAHT?

A: Yes. SP0502BAHTG is electrically and mechanically identical to SP0502BAHT. Both components feature 5.5V reverse standoff voltage, 8.5V clamping voltage, and SOT-23-3 packaging. The primary differences are product status (Active vs. Obsolete) and RoHS compliance.

Q: Is ESD24VS2UE6327HTSA1 compatible with SP0502BAHT applications?

A: No. ESD24VS2UE6327HTSA1 has different voltage ratings (24V standoff, 41V clamping) and is not electrically interchangeable. This component is suitable only for circuits requiring higher voltage protection levels.

Q: What is the significance of the SOT-23-3 package for substitution?

A: The SOT-23-3 package is a standard surface-mount configuration for TVS diodes. All listed components use this package, ensuring mechanical compatibility in PCB layouts. Package compatibility alone does not guarantee electrical interchangeability.

Q: Why is SP0502BAHT marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. SP0502BAHTG provides continuity for this product line with identical specifications and active manufacturing status.

Q: Are there temperature range differences between substitutes?

A: Yes. SP0502BAHT and SP0502BAHTG operate from -40°C to 85°C (TA). ESD24VS2UE6327HTSA1 operates from -55°C to 150°C (TJ), providing extended temperature capability for demanding environments.