TLD8S24AH Equivalent & Substitute Parts

Part Overview

The TLD8S24AH is an active Transient Voltage Suppressor (TVS) diode manufactured by Taiwan Semiconductor Corporation. This unidirectional zener-type TVS diode is designed for surface mount applications in the DO-218AB package and is qualified to automotive standards (AEC-Q101). The device provides transient voltage suppression with a 24V reverse standoff voltage and 38.9V maximum clamping voltage at peak pulse current. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across manufacturing cycles.

Substiute Parts

TLD8S24AH

Taiwan Semiconductor CorporationIn Stock: 1371TLD8S24AH Datasheet

Current PartRFQ

SM8S24A

Yenyo TechnologyIn Stock: 10370SM8S24A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLD8S24AH is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 24V
• Voltage - Breakdown (Min): 26.7V
• Voltage - Clamping (Max) @ Ipp: 38.9V
• Current - Peak Pulse (10/1000µs): 170A
• Power - Peak Pulse: 6600W

Mechanical & Package Parameters:

• Package / Case: DO-218AB
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Type: Zener

Environmental & Compliance Parameters:

• Operating Temperature Range: -55°C to 175°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

Substitute parts must match all electrical specifications, package configuration, and automotive qualification requirements. The SM8S24A from Yenyo Technology meets these criteria and is classified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

TLD8S24AH (Taiwan Semiconductor Corporation)

The TLD8S24AH is the primary reference part and maintains active product status. It carries AEC-Q101 automotive qualification and RoHS3 compliance. Current inventory of 1,301 pieces is available. This part is suitable for applications requiring established supply chain documentation and Taiwan Semiconductor Corporation manufacturer support.

SM8S24A (Yenyo Technology)

The SM8S24A is a direct electrical and mechanical equivalent with identical performance specifications across all critical parameters. It holds AEC-Q101 automotive qualification and RoHS compliance status. Current inventory of 10,261 pieces provides enhanced availability. The SM8S24A is suitable for applications where supply chain flexibility and higher stock levels are advantageous. REACH status differs (REACH Affected vs. REACH Unaffected); this distinction must be evaluated against specific regulatory requirements for the end application.

Both parts are active products with automotive-grade qualification and identical electrical performance. Selection between them should be based on supply chain requirements, inventory availability, and regulatory compliance needs specific to the application region.

Frequently Asked Questions (FAQ)

Q: Can SM8S24A be used as a direct replacement for TLD8S24AH?

A: Yes. The SM8S24A meets all electrical, mechanical, and environmental specifications of the TLD8S24AH. Both devices are unidirectional zener-type TVS diodes with identical voltage ratings (24V standoff, 38.9V clamping), peak pulse current (170A), power dissipation (6600W), operating temperature range (-55°C to 175°C), and DO-218AB surface mount package configuration. Both hold AEC-Q101 automotive qualification.

Q: Are there any differences in compliance or certification between these parts?

A: Both parts carry AEC-Q101 automotive qualification and RoHS compliance. The primary difference is REACH status: TLD8S24AH is REACH Unaffected, while SM8S24A is REACH Affected. Applications subject to REACH regulations must account for this distinction. Both parts have MSL 1 (Unlimited) moisture sensitivity rating.

Q: Do these parts require different PCB footprints or assembly procedures?

A: No. Both parts use the DO-218AB surface mount package and Tape & Reel (TR) packaging format. PCB footprints, assembly procedures, and reflow profiles are identical.

Q: What is the significance of the 24V reverse standoff voltage and 38.9V clamping voltage?

A: The 24V reverse standoff voltage is the maximum voltage the diode blocks without conducting. The 38.9V clamping voltage is the maximum voltage across the diode when subjected to a 170A peak pulse current over 10/1000 microseconds. These parameters define the transient suppression performance and must match exactly for circuit protection equivalence.

Q: Can these parts be used in non-automotive applications?

A: Yes. While both parts carry automotive-grade qualification (AEC-Q101), they are suitable for any application requiring a 24V standoff, unidirectional TVS diode with 6600W peak pulse power dissipation in a DO-218AB package. Automotive qualification indicates enhanced reliability and quality standards applicable across multiple industries.

Q: What inventory considerations should influence part selection?

A: TLD8S24AH has 1,301 pieces in stock, while SM8S24A has 10,261 pieces available. For high-volume production or extended lead time mitigation, SM8S24A offers superior inventory availability. For applications with established supply chain documentation tied to Taiwan Semiconductor Corporation, TLD8S24AH maintains continuity.