SR202-TP Equivalent & Substitute Parts

Part Overview

The SR202-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 20V DC reverse voltage and 2A average rectified current in a DO-41 through-hole package. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. Organizations using SR202-TP in active production or maintenance applications require qualified substitute components that maintain electrical and mechanical compatibility while offering active product status and continued supply availability.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 20 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-50°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SR202-TP is determined by the following critical parameters:

Mandatory Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 20 V
Current - Average Rectified (Io): 2 A
Technology: Schottky
Mounting Type: Through Hole
RoHS Status: ROHS3 Compliant

Package Compatibility: Substitute parts must use axial through-hole packages compatible with DO-41 or DO-15 footprints. Physical dimensions and lead spacing must accommodate existing PCB layouts designed for the SR202-TP.

Electrical Performance: Forward voltage (Vf) at rated current and reverse leakage current are secondary parameters that may vary within acceptable ranges for Schottky diode applications. Operating temperature range may extend beyond the original specification without compromising substitution validity.

Product Status: Substitute parts with "Active" product status are preferred to ensure long-term supply continuity and manufacturing support.

Parameter Comparison

Parameter	SR202-TP	SB220-E3/54	SB220-E3/73	SB220E-G	SR102 A0G
Manufacturer	Micro Commercial Co	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Comchip Technology	Taiwan Semiconductor Corporation
Product Status	Not For New Designs	Active	Active	Active	Active
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V	20 V	20 V
Current - Average Rectified (Io)	2 A	2 A	2 A	2 A	1 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 2 A	500 mV @ 2 A	500 mV @ 2 A	500 mV @ 2 A	550 mV @ 1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 20 V	500 µA @ 20 V	500 µA @ 20 V	500 µA @ 20 V	500 µA @ 20 V
Package / Case	DO-204AL, DO-41, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-50°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Full Electrical and Current Rating Match):

SB220-E3/54, SB220-E3/73, and SB220E-G are direct electrical equivalents to the SR202-TP, maintaining the 20V/2A rating specification. All three parts carry Active product status, ensuring ongoing manufacturing support and supply availability. These substitutes feature improved reverse leakage characteristics (500 µA versus 1 mA) and extended operating temperature ranges (-65°C to 125°C), providing enhanced reliability margins. Package differences between DO-41 and DO-15 axial formats require PCB layout verification for mechanical fit, though both are standard through-hole axial packages with compatible lead spacing for most applications.

Secondary Substitute (Reduced Current Rating):

SR102 A0G is a 1A-rated Schottky diode with 20V reverse voltage rating. This part is suitable only for applications where the circuit current requirement does not exceed 1A. The SR102 A0G maintains the DO-41 package format, providing direct mechanical compatibility with the original SR202-TP footprint. This part carries Active product status and ROHS3 compliance.

Compliance and Supply Considerations:

All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original SR202-TP specifications. The transition from "Not For New Designs" status to Active product status ensures long-term component availability and manufacturing continuity for production and maintenance applications.

Frequently Asked Questions (FAQ)

Q: Can SB220-E3/54, SB220-E3/73, and SB220E-G be used interchangeably with SR202-TP?

A: Yes, these three parts are electrically equivalent to SR202-TP, sharing identical 20V/2A ratings, Schottky technology, and fast recovery characteristics. The primary difference is package format: SB220 variants use DO-15 (DO-204AC) packages while SR202-TP uses DO-41 (DO-204AL). Both are axial through-hole packages with compatible lead spacing. PCB layout verification is required to confirm mechanical fit in existing designs.

Q: What is the difference between SB220-E3/54, SB220-E3/73, and SB220E-G?

A: All three parts share identical electrical specifications (20V/2A Schottky diode). Differences exist in manufacturer (Vishay versus Comchip) and packaging format (Cut Tape versus Tape & Reel). Selection between these parts depends on procurement requirements and packaging preferences. Electrical performance and substitution capability are equivalent.

Q: Why does SR102 A0G have a lower current rating than SR202-TP?

A: SR102 A0G is rated for 1A average rectified current, compared to SR202-TP's 2A rating. This part is suitable only for circuits where maximum current does not exceed 1A. Using SR102 A0G in a 2A application would exceed the component's current rating and create reliability risk.

Q: Are there package compatibility concerns when substituting DO-41 with DO-15?

A: Both DO-41 and DO-15 are standard axial through-hole packages with compatible lead spacing and diameter. Physical dimensions differ slightly, but both fit standard 0.3-inch pitch PCB holes. Verify PCB layout spacing to confirm the substitute package accommodates existing component placement without interference.

Q: Do the substitute parts maintain the same operating temperature range as SR202-TP?

A: SR202-TP operates from -50°C to 125°C. SB220 variants and SB220E-G extend this range to -65°C to 125°C, providing wider temperature margin. SR102 A0G operates from -55°C to 125°C. All substitutes meet or exceed the original temperature specification.

Q: What is the significance of reverse leakage current differences?

A: SR202-TP specifies 1 mA reverse leakage at 20V, while substitute parts specify 500 µA. Lower reverse leakage indicates reduced parasitic current flow in reverse bias condition, which improves circuit efficiency and reduces power dissipation. This difference is beneficial for most applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts (SB220-E3/54, SB220-E3/73, SB220E-G, and SR102 A0G) are ROHS3 compliant, matching the original SR202-TP specification. All parts carry MSL 1 (Unlimited) moisture sensitivity rating.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message