42CTQ030STRR Equivalent & Substitute Parts

Part Overview

The 42CTQ030STRR is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration with a maximum reverse voltage of 30 V and average rectified current of 20 A per diode. The device is housed in a TO-263-3 D2PAK surface mount package with 2 leads plus tab.

The 42CTQ030STRR 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)	30 V
Current - Average Rectified (Io) (per Diode)	20 A
Voltage - Forward (Vf) (Max) @ If	480 mV @ 20 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	3 mA @ 30 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 42CTQ030STRR are classified into two categories based on electrical parameter compatibility:

Parametric Equivalents (Full Electrical Match): Parts that maintain identical electrical specifications across all critical parameters including reverse voltage (30 V), average rectified current (20 A per diode), forward voltage (480 mV @ 20 A), and reverse leakage current (3 mA @ 30 V). These parts are direct functional replacements.

Manufacturer Recommended Substitutes (Reduced Current Rating): Parts that maintain the same reverse voltage (30 V) and package form factor but operate at a reduced average rectified current of 15 A per diode. These substitutes are suitable for applications where the full 20 A current capability is not required.

All substitute parts share the following critical parameters with the main part:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 30 V
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type: Surface Mount
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Parameter Comparison

Manufacturer Part Number	Manufacturer	Io (per Diode)	Vf (Max) @ If	Reverse Leakage @ Vr	Tj (Max)	Product Status	RoHS Status	Packaging
42CTQ030STRR	Vishay General Semiconductor - Diodes Division	20 A	480 mV @ 20 A	3 mA @ 30 V	150°C	Obsolete	RoHS Non-Compliant	Bulk
VS-42CTQ030SHM3	Vishay General Semiconductor - Diodes Division	20 A	480 mV @ 20 A	3 mA @ 30 V	150°C	Active	ROHS3 Compliant	Tube
VS-42CTQ030STRL-M3	Vishay General Semiconductor - Diodes Division	20 A	480 mV @ 20 A	3 mA @ 30 V	150°C	Active	ROHS3 Compliant	Tape & Reel (TR)
STPS41L30CG-TR	STMicroelectronics	20 A	480 mV @ 20 A	1.5 mA @ 30 V	150°C	Active	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®
STPS3030CG-TR	STMicroelectronics	15 A	490 mV @ 15 A	1 mA @ 30 V	150°C	Active	ROHS3 Compliant	Tape & Reel (TR)
STPS30L30CG-TR	STMicroelectronics	15 A	460 mV @ 15 A	1.5 mA @ 60 V	150°C	Active	ROHS3 Compliant	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

The VS-42CTQ030STRL-M3 and VS-42CTQ030SHM3 are parametric equivalents manufactured by Vishay. Both parts maintain the full 20 A average rectified current specification and identical forward voltage characteristics. The VS-42CTQ030STRL-M3 is available in Tape & Reel packaging with 4361 units in stock, while VS-42CTQ030SHM3 is available in Tube packaging with 901 units in stock. Both parts are ROHS3 compliant and carry AEC-Q101 automotive qualification.

The STPS41L30CG-TR manufactured by STMicroelectronics is a parametric equivalent that maintains the 20 A current rating and 480 mV forward voltage specification. This part is available in Cut Tape & Digi-Reel® packaging with 1359 units in stock and is ROHS3 compliant.

For Current-Reduced Applications:

The STPS3030CG-TR and STPS30L30CG-TR manufactured by STMicroelectronics are suitable for applications where the average rectified current requirement does not exceed 15 A per diode. Both parts maintain the 30 V reverse voltage rating and are ROHS3 compliant. The STPS3030CG-TR is available in Tape & Reel packaging with 1594 units in stock. The STPS30L30CG-TR is available in Cut Tape & Digi-Reel® packaging with 4200 units in stock.

All substitute parts are active products with current manufacturing status, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can VS-42CTQ030STRL-M3 be used as a direct replacement for 42CTQ030STRR?

A: Yes. The VS-42CTQ030STRL-M3 is a parametric equivalent with identical electrical specifications: 20 A average rectified current, 480 mV forward voltage at 20 A, and 3 mA reverse leakage at 30 V. The primary difference is packaging format (Tape & Reel versus bulk) and compliance status (ROHS3 compliant versus non-compliant).

Q: What is the difference between STPS41L30CG-TR and STPS3030CG-TR?

A: The STPS41L30CG-TR maintains the 20 A average rectified current rating of the original 42CTQ030STRR. The STPS3030CG-TR operates at a reduced 15 A average rectified current. Both parts share the same 30 V reverse voltage rating and TO-263-3 D2PAK package. Selection depends on the application's current requirements.

Q: Are all substitute parts RoHS compliant?

A: The original 42CTQ030STRR is RoHS non-compliant. All substitute parts listed (VS-42CTQ030SHM3, VS-42CTQ030STRL-M3, STPS41L30CG-TR, STPS3030CG-TR, and STPS30L30CG-TR) are ROHS3 compliant.

Q: What packaging options are available for equivalent parts?

A: Vishay equivalents are available in Tube (VS-42CTQ030SHM3) and Tape & Reel (VS-42CTQ030STRL-M3) packaging. STMicroelectronics equivalents are available in Tape & Reel (STPS3030CG-TR) and Cut Tape & Digi-Reel® (STPS41L30CG-TR, STPS30L30CG-TR) packaging. Selection depends on assembly process requirements and volume needs.

Q: Can STPS30L30CG-TR be used in place of 42CTQ030STRR?

A: The STPS30L30CG-TR is suitable only for applications where the average rectified current requirement does not exceed 15 A per diode. The original 42CTQ030STRR is rated for 20 A. The STPS30L30CG-TR maintains the 30 V reverse voltage rating and TO-263-3 D2PAK package form factor.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts maintain a maximum junction temperature of 150°C. The original 42CTQ030STRR operates across -55°C to 150°C. Verify specific application temperature requirements against individual part specifications.

Q: Are automotive-qualified alternatives available?

A: Yes. The VS-42CTQ030SHM3 and VS-42CTQ030STRL-M3 carry AEC-Q101 automotive qualification and are suitable for automotive applications requiring equivalent performance to the original 42CTQ030STRR.

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