47CTQ020STRL Equivalent & Substitute Parts

Part Overview

The 47CTQ020STRL is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 20 V DC reverse voltage and 20 A average rectified current per diode. The part is packaged in TO-263-3 (D2PAK) surface mount format with fast recovery characteristics suitable for high-frequency rectification applications.

The 47CTQ020STRL is classified as obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V
Current - Average Rectified (Io) (per Diode)	20 A
Voltage - Forward (Vf) (Max) @ If	450 mV @ 20 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	3 mA @ 20 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Substitute Part Grouping Explanation

Substitution of the 47CTQ020STRL is determined by matching the following critical parameters:

Electrical Parameters:

Diode configuration (1 Pair Common Cathode)
Schottky technology
Voltage rating (20 V DC reverse minimum)
Current rating (20 A average rectified minimum)
Forward voltage characteristics
Fast recovery speed classification

Mechanical Parameters:

Surface mount mounting type
TO-263-3 D2PAK package format

Substitute parts are classified into two categories: parametric equivalents that maintain identical electrical and mechanical specifications, and manufacturer-recommended alternatives that provide enhanced performance characteristics within compatible package formats.

Parameter Comparison

Parameter	47CTQ020STRL	VS-47CTQ020STRL-M3	VS-47CTQ020STRR-M3	STPS2045CG-TR
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V	45 V
Current - Average Rectified (Io) (per Diode)	20 A	20 A	20 A	10 A
Voltage - Forward (Vf) (Max) @ If	450 mV @ 20 A	450 mV @ 20 A	450 mV @ 20 A	570 mV @ 10 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	3 mA @ 20 V	3 mA @ 20 V	3 mA @ 20 V	100 µA @ 45 V
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	175°C (Max)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Part Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitutes):

VS-47CTQ020STRL-M3 and VS-47CTQ020STRR-M3 are parametric equivalents of the 47CTQ020STRL. These parts maintain identical electrical specifications including 20 V reverse voltage rating, 20 A average rectified current, 450 mV forward voltage at 20 A, and identical thermal operating range. Both substitute parts are classified as Active and ROHS3 Compliant, providing improved regulatory compliance compared to the obsolete original part. These substitutes are suitable for direct replacement in applications requiring the original 47CTQ020STRL specifications.

Manufacturer-Recommended Alternative:

STPS2045CG-TR is a manufacturer-recommended alternative from STMicroelectronics. This part differs in electrical specifications: it provides a higher 45 V reverse voltage rating and a lower 10 A average rectified current rating compared to the 20 V / 20 A original specification. The STPS2045CG-TR maintains the same TO-263-3 D2PAK package format and Schottky technology. This alternative is suitable for applications where higher voltage capability is required, provided that the reduced current rating of 10 A per diode is acceptable for the circuit design. The STPS2045CG-TR is Active and ROHS3 Compliant.

Selection between parametric equivalents and the manufacturer-recommended alternative depends on circuit voltage and current requirements. Parametric equivalents provide identical performance characteristics. The manufacturer-recommended alternative provides enhanced voltage capability at the cost of reduced current capacity.

Frequently Asked Questions (FAQ)

Q: Can VS-47CTQ020STRL-M3 be used as a direct replacement for 47CTQ020STRL?

A: Yes. VS-47CTQ020STRL-M3 is a parametric equivalent with identical electrical and mechanical specifications. Both parts feature 20 V reverse voltage, 20 A average rectified current, 450 mV forward voltage at 20 A, and TO-263-3 D2PAK packaging. The primary difference is part status: VS-47CTQ020STRL-M3 is Active and ROHS3 Compliant, while the original is Obsolete and RoHS non-compliant.

Q: What is the difference between VS-47CTQ020STRL-M3 and VS-47CTQ020STRR-M3?

A: Both parts are parametric equivalents with identical electrical specifications and package format. The difference lies in packaging configuration: VS-47CTQ020STRL-M3 is supplied in Tape & Reel (TR) format, while VS-47CTQ020STRR-M3 is also supplied in Tape & Reel (TR) format. Both are suitable for automated assembly processes.

Q: Can STPS2045CG-TR replace 47CTQ020STRL in all applications?

A: STPS2045CG-TR is not a direct parametric equivalent. While it maintains the same package format and Schottky technology, it has different electrical ratings: 45 V reverse voltage (versus 20 V) and 10 A average rectified current (versus 20 A). STPS2045CG-TR is suitable only for applications where the circuit voltage does not exceed 45 V and where the reduced current capacity of 10 A per diode is acceptable.

Q: Are all substitute parts compatible with the original PCB layout?

A: Yes. All substitute parts use the TO-263-3 D2PAK package format with identical pinout and mechanical dimensions. No PCB layout modifications are required for substitution.

Q: What is the inventory status of substitute parts?

A: VS-47CTQ020STRL-M3 has 3,597 pieces in stock. VS-47CTQ020STRR-M3 has 1,050 pieces in stock. STPS2045CG-TR has 20,100 pieces in stock. All parts are available as new original components.

Q: Do the substitute parts meet current regulatory requirements?

A: VS-47CTQ020STRL-M3, VS-47CTQ020STRR-M3, and STPS2045CG-TR are all ROHS3 Compliant and REACH Unaffected. The original 47CTQ020STRL is RoHS non-compliant. Substitution with any of these parts improves regulatory compliance for new designs and production runs.

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