SR320 Schottky Diode 200V 3A Equivalent & Substitute Parts

Part Overview

The SR320 is an active Schottky rectifier diode rated for 200V DC reverse voltage and 3A average rectified current in a DO-201AD axial through-hole package. Manufactured by Taiwan Semiconductor Corporation, this component is ROHS3 compliant and designed for fast recovery applications with switching speeds ≤500ns. Substitute parts may be required due to inventory availability, regional supplier preferences, or specific application performance requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

SR320

Taiwan Semiconductor CorporationIn Stock: 21128SR320 Datasheet

Current PartRFQ

SB3200

SMC Diode SolutionsIn Stock: 3578SB3200 Datasheet

DirectRFQ

SR5200-TP

Micro Commercial CoIn Stock: 5110SR5200-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SR320 are classified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Direct Substitutes maintain identical electrical ratings: 200V DC reverse voltage, 3A average rectified current, DO-201AD package, through-hole mounting, and fast recovery Schottky technology. These parts are interchangeable in applications where the specified current and voltage ratings are required.

Similar Substitutes share the same voltage rating (200V) and package form factor (DO-201AD, axial, through-hole) but differ in current rating or secondary electrical characteristics. These parts are suitable for applications where higher current capacity is acceptable or beneficial, provided circuit design accommodates the different electrical parameters.

All substitute parts maintain ROHS3 compliance, Schottky technology classification, and fast recovery speed characteristics (≤500ns, >200mA).

Parameter Comparison

Engineering Selection Recommendations

SB3200 (Direct Substitute): This part is a direct electrical equivalent to the SR320, maintaining identical 200V/3A ratings and DO-201AD package specifications. The SB3200 exhibits lower forward voltage (900 mV vs. 950 mV @ 3A), which may result in reduced power dissipation in the application. Higher reverse leakage current (1 mA vs. 100 µA @ 200V) should be evaluated for applications with strict leakage requirements. Both parts are ROHS3 compliant and active products. The SB3200 is packaged in Cut Tape format with 3,518 units in stock.

SR5200-TP (Similar Substitute): This part shares the 200V voltage rating and DO-201AD package with the SR320 but is rated for 5A average rectified current. The SR5200-TP is suitable for applications where the circuit design permits higher current capacity or where future design margin is required. Operating temperature range extends to -65°C (vs. -55°C minimum for SR320). Reverse leakage current is 500 µA @ 200V. This part is ROHS3 compliant, active, and available in Cut Tape packaging with 5,011 units in stock.

Selection between these substitutes depends on application-specific requirements for forward voltage characteristics, reverse leakage performance, and current capacity needs.

Frequently Asked Questions (FAQ)

Q: Can the SB3200 be used as a direct replacement for the SR320?

A: Yes. The SB3200 maintains identical voltage (200V), current (3A), and package (DO-201AD, through-hole) specifications. Both are Schottky diodes with fast recovery characteristics. The primary difference is lower forward voltage drop (900 mV vs. 950 mV @ 3A) in the SB3200, which is generally beneficial for power efficiency.

Q: What are the limitations of using SR5200-TP as a substitute for SR320?

A: The SR5200-TP is rated for 5A average rectified current, exceeding the SR320's 3A rating. This part is suitable only in applications where the circuit design accommodates higher current capacity. The SR5200-TP maintains the same 200V voltage rating and DO-201AD package form factor. Reverse leakage current is higher (500 µA vs. 100 µA @ 200V).

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All parts listed (SR320, SB3200, SR5200-TP) use the DO-201AD axial through-hole package, ensuring mechanical and footprint compatibility on printed circuit boards designed for this package type.

Q: Do substitute parts meet the same compliance standards as the SR320?

A: Yes. All substitute parts are ROHS3 compliant and classified as active products. Both SB3200 and SR5200-TP maintain the same environmental and regulatory compliance status as the SR320.

Q: How do reverse leakage currents differ among these parts?

A: The SR320 specifies 100 µA reverse leakage @ 200V. The SB3200 specifies 1 mA (1000 µA), and the SR5200-TP specifies 500 µA. Applications requiring minimal leakage current should prioritize the SR320. Higher leakage in substitute parts may impact circuit performance in sensitive analog or high-impedance applications.

Q: What is the temperature operating range for each part?

A: The SR320 and SB3200 operate from -55°C to 150°C junction temperature. The SR5200-TP extends the lower temperature limit to -65°C, providing wider temperature range coverage for applications requiring operation in colder environments.