SRAS20100 Equivalent & Substitute Parts

Part Overview

The SRAS20100 is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 20 A average rectified current in a surface mount TO-263AB (D2PAK) package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate specific application requirements where alternative electrical or thermal characteristics may be beneficial.

Substiute Parts

SRAS20100

Taiwan Semiconductor CorporationIn Stock: 1018SRAS20100 Datasheet

Current PartRFQ

STPS20M100SG-TR

STMicroelectronicsIn Stock: 17697STPS20M100SG-TR Datasheet

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STPS30SM100SG-TR

STMicroelectronicsIn Stock: 35386STPS30SM100SG-TR Datasheet

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STPS8H100G-TR

STMicroelectronicsIn Stock: 7061STPS8H100G-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SRAS20100 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 100 V
• Mounting Type: Surface Mount
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab)
• Technology: Schottky
• RoHS Status: ROHS3 Compliant

Flexible Parameters (Allow Variation):

• Current - Average Rectified (Io): Substitutes rated at 20 A or higher are acceptable
• Voltage - Forward (Vf) (Max) @ If: Lower forward voltage indicates improved efficiency
• Current - Reverse Leakage @ Vr: Lower leakage indicates reduced standby power dissipation
• Operating Temperature - Junction: Higher maximum junction temperature provides thermal margin

All identified substitute parts meet the mandatory matching criteria and are classified as Active product status with ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

STPS20M100SG-TR (STMicroelectronics)

This substitute provides identical current and voltage ratings to the SRAS20100. The STPS20M100SG-TR exhibits lower forward voltage (850 mV vs. 920 mV at 20 A) and reduced reverse leakage current (40 µA vs. 100 µA at 100 V), resulting in improved power efficiency and reduced standby power dissipation. Both parts share identical maximum junction temperature (150°C) and are ROHS3 compliant with MSL 1 rating. Direct pin-compatible replacement in TO-263AB D2PAK footprint.

STPS30SM100SG-TR (STMicroelectronics)

This substitute is rated for 30 A average rectified current, exceeding the SRAS20100 specification of 20 A. The higher current rating provides design margin for applications requiring increased current capacity within the same 100 V voltage class. Forward voltage at 30 A is 870 mV. Reverse leakage is 45 µA at 100 V. Maximum junction temperature is 150°C. ROHS3 compliant with MSL 1 rating. Pin-compatible in TO-263AB D2PAK package. Suitable for applications where current headroom is required.

STPS8H100G-TR (STMicroelectronics)

This substitute is rated for 8 A average rectified current, below the SRAS20100 specification of 20 A. The STPS8H100G-TR is not suitable as a direct replacement for applications requiring 20 A operation. However, it is applicable for lower-current designs within the 100 V voltage class. This part exhibits the lowest forward voltage (710 mV at 8 A) and lowest reverse leakage current (4.5 µA at 100 V) among all listed substitutes. Maximum junction temperature is 175°C, providing superior thermal performance. ROHS3 compliant with MSL 1 rating. Pin-compatible in TO-263AB D2PAK package.

All substitute parts are Active product status and maintain full regulatory compliance (ROHS3, REACH Unaffected, EAR99 ECCN classification).

Frequently Asked Questions (FAQ)

Q: Can STPS20M100SG-TR be used as a direct replacement for SRAS20100?

A: Yes. The STPS20M100SG-TR is a direct functional equivalent. Both parts are rated for 100 V DC reverse voltage and 20 A average rectified current in TO-263AB D2PAK package. The STPS20M100SG-TR exhibits superior electrical characteristics with lower forward voltage and reduced reverse leakage. Pin configuration and thermal characteristics are compatible.

Q: What is the difference between STPS20M100SG-TR and STPS30SM100SG-TR?

A: The primary difference is current rating. STPS20M100SG-TR is rated for 20 A, while STPS30SM100SG-TR is rated for 30 A. Both maintain 100 V voltage rating and TO-263AB D2PAK package. The 30 A variant provides additional current capacity for applications requiring higher current handling. Forward voltage characteristics differ slightly due to the higher current rating specification.

Q: Can STPS8H100G-TR replace SRAS20100 in a 20 A application?

A: No. STPS8H100G-TR is rated for 8 A average rectified current and is not suitable for applications requiring 20 A operation. Using an undersized component will result in excessive power dissipation, thermal stress, and potential component failure. STPS8H100G-TR is applicable only for designs rated at 8 A or lower within the 100 V voltage class.

Q: Are all substitute parts pin-compatible with SRAS20100?

A: Yes. All substitute parts use TO-263-3 D2PAK (2 Leads + Tab) package configuration, providing identical pin layout and footprint compatibility with SRAS20100. No PCB layout modifications are required for substitution.

Q: What are the compliance and regulatory differences between these parts?

A: All parts (SRAS20100 and all substitutes) are ROHS3 compliant, REACH unaffected, and classified as EAR99 under ECCN. All parts have MSL 1 (Unlimited) moisture sensitivity rating. No compliance or regulatory differences exist between the main part and substitutes.

Q: Which substitute offers the best thermal performance?

A: STPS8H100G-TR has the highest maximum junction temperature rating at 175°C, compared to 150°C for SRAS20100, STPS20M100SG-TR, and STPS30SM100SG-TR. However, thermal performance in application depends on actual current loading and thermal management design. For 20 A applications, STPS20M100SG-TR is the appropriate selection.

Q: How do forward voltage characteristics affect component selection?

A: Forward voltage directly impacts power dissipation and efficiency. Lower forward voltage reduces heat generation and improves overall system efficiency. STPS20M100SG-TR (850 mV @ 20 A) exhibits lower forward voltage than SRAS20100 (920 mV @ 20 A), resulting in reduced power loss. For applications sensitive to power efficiency or thermal management, STPS20M100SG-TR provides measurable improvement.

Q: What does reverse leakage current indicate?

A: Reverse leakage current represents standby power dissipation when the diode is reverse-biased. Lower reverse leakage reduces standby power consumption and heat generation during non-conducting periods. STPS20M100SG-TR (40 µA @ 100 V) and STPS30SM100SG-TR (45 µA @ 100 V) exhibit significantly lower reverse leakage than SRAS20100 (100 µA @ 100 V), providing improved efficiency in applications with extended reverse-bias periods.