SR210 Schottky Diode Equivalent & Substitute Parts

Part Overview

The SR210 is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 2 A average rectified current in a DO-204AC (DO-15) through-hole axial package. This component is used in power supply circuits, voltage regulation applications, and fast-switching rectification where low forward voltage drop and rapid recovery characteristics are required. Substitute parts are identified based on matching electrical specifications and package compatibility to support procurement flexibility and supply chain continuity.

Substiute Parts

SR210

Taiwan Semiconductor CorporationIn Stock: 1667SR210 Datasheet

Current PartRFQ

SB2100

Diotec SemiconductorIn Stock: 17386SB2100 Datasheet

DirectRFQ

STPS2H100

STMicroelectronicsIn Stock: 2244STPS2H100 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SR210 are qualified based on the following electrical and mechanical criteria:

Primary Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 100 V
• Current - Average Rectified (Io): 2 A
• Technology: Schottky
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Mounting Type: Through Hole
• RoHS3 Compliance

Package Compatibility: Substitute parts must use axial through-hole packages compatible with DO-204AC (DO-15) or DO-204AL (DO-41) footprints. Both package types accommodate the same lead spacing and mounting methodology in through-hole applications.

Electrical Tolerance: Forward voltage (Vf) and reverse leakage current (Ir) variations within the Schottky diode technology class are acceptable provided the maximum ratings do not exceed the application requirements. Operating temperature range differences are acceptable when the substitute part's maximum junction temperature meets or exceeds the application's thermal requirements.

Parameter Comparison

Engineering Selection Recommendations

SR210 (Taiwan Semiconductor Corporation) The SR210 is the primary reference part, actively manufactured and ROHS3 compliant. It provides a baseline specification for 100 V, 2 A Schottky rectification in DO-15 package format. This part is suitable for applications requiring the specified electrical characteristics and operating temperature range of -55 to 150 °C.

SB2100 (Diotec Semiconductor) - Direct Equivalent The SB2100 is a direct functional equivalent with identical voltage and current ratings in the same DO-15 package. It exhibits lower forward voltage (790 mV vs. 850 mV at 2 A), resulting in reduced power dissipation. The operating temperature range (-50 to 150 °C) is slightly narrower at the lower bound. This part is ROHS3 compliant and suitable for applications where the -50 °C minimum temperature is acceptable.

STPS2H100 (STMicroelectronics) - Package Variant The STPS2H100 meets all electrical specifications in a DO-41 package variant. It features significantly lower reverse leakage current (1 µA vs. 100 µA at 100 V), beneficial for low-leakage applications. The maximum operating temperature is 175 °C, exceeding both alternative parts. This part is ROHS3 compliant. The DO-41 package requires verification of PCB footprint compatibility, as it differs from the DO-15 format.

All three parts are active products with ROHS3 compliance and are suitable for direct substitution based on electrical parameters and package availability.

Frequently Asked Questions (FAQ)

Q: Can the SB2100 replace the SR210 in all applications? A: The SB2100 is electrically equivalent for 100 V, 2 A Schottky rectification. The primary difference is the minimum operating temperature of -50 °C versus -55 °C for the SR210. Substitution is valid for applications operating above -50 °C. The lower forward voltage of the SB2100 (790 mV) reduces power dissipation compared to the SR210 (850 mV).

Q: What is the difference between DO-15 and DO-41 packages? A: Both are through-hole axial packages for Schottky diodes. DO-15 (DO-204AC) and DO-41 (DO-204AL) differ in physical dimensions and lead spacing. The STPS2H100 uses DO-41 format. PCB footprint compatibility must be verified before substitution, as the packages are not mechanically interchangeable without layout modification.

Q: Why does the STPS2H100 have lower reverse leakage current? A: Reverse leakage current (1 µA vs. 100 µA) is a manufacturing characteristic of the specific Schottky junction design. Lower leakage reduces standby power consumption and is beneficial in battery-powered or low-power applications. This is a performance advantage, not a limitation.

Q: Are all three parts RoHS compliant? A: Yes. The SR210, SB2100, and STPS2H100 are all ROHS3 compliant, meeting lead-free and hazardous substance restrictions for electronic components.

Q: Which part should be selected for high-temperature applications? A: The STPS2H100 supports operation to 175 °C maximum junction temperature, compared to 150 °C for the SR210 and SB2100. For applications requiring thermal headroom above 150 °C, the STPS2H100 is the appropriate selection, provided DO-41 package compatibility is confirmed.

Q: Can forward voltage differences affect circuit performance? A: Forward voltage variations (790 mV to 860 mV at 2 A) are within typical Schottky diode tolerance. In voltage regulation and power supply circuits, these differences produce minor variations in output voltage and power dissipation. Circuit design margins typically accommodate this range. Verification through simulation or testing is appropriate for precision applications.