VS-30CTQ035PBF Equivalent & Substitute Parts

Part Overview

The VS-30CTQ035PBF is a Schottky diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 35 V DC reverse voltage and 15 A average rectified current per diode in a Through Hole TO-220-3 package. The part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	35 V
Current - Average Rectified (Io) (per Diode)	15 A
Voltage - Forward (Vf) (Max) @ If	620 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	2 mA @ 35 V
Operating Temperature - Junction	-55°C ~ 175°C
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the VS-30CTQ035PBF is determined by the following critical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 35 V minimum
Mounting Type: Through Hole
Package / Case: TO-220-3

Allowable Variation Parameters:

Current - Average Rectified (Io): Equal to or greater than 15 A
Voltage - Forward (Vf): Variations acceptable within application tolerance
Current - Reverse Leakage: Variations acceptable within application tolerance
Operating Temperature Range: Equal to or exceeding -55°C ~ 175°C

Substitute parts are grouped into three categories based on their relationship to the main part specifications:

Direct Manufacturer Substitutes: Parts from the same manufacturer (Vishay) with identical configuration and voltage rating but potentially different current ratings or packaging variants.

Parametric Equivalents: Parts from alternative manufacturers with identical or superior electrical specifications and the same package type.

Cross-Manufacturer Alternatives: Parts from different manufacturers meeting or exceeding the core electrical requirements with compatible packaging.

Parameter Comparison

Parameter	VS-30CTQ035PBF (Main)	VS-30CTQ035-M3	VS-30CTQ035HN3	MBR2535CTG	STPS3045CT	30CTQ035
Manufacturer	Vishay	Vishay	Vishay	onsemi	STMicroelectronics	SMC Diode Solutions
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	35 V	35 V	35 V	35 V	45 V	35 V
Current - Average Rectified (Io) (per Diode)	15 A	30 A	15 A	30 A	15 A	15 A
Voltage - Forward (Vf) (Max) @ If	620 mV @ 15 A	760 mV @ 30 A	620 mV @ 15 A	820 mV @ 30 A	570 mV @ 15 A	620 mV @ 15 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)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	2 mA @ 35 V	2 mA @ 35 V	2 mA @ 35 V	200 µA @ 35 V	200 µA @ 45 V	1 mA @ 35 V
Operating Temperature - Junction	-55°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 175°C	-65°C ~ 175°C	Max 200°C	-55°C ~ 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220-3
Product Status	Discontinued	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

VS-30CTQ035-M3 (Vishay Direct Manufacturer Substitute)

This part is a direct Vishay alternative with identical voltage rating and configuration. The current rating is doubled to 30 A, providing enhanced current handling capability. The part is in Active product status with full availability. Forward voltage increases to 760 mV at the higher 30 A rating. This substitute is suitable for applications requiring the same 35 V rating with potential for higher current demands. ROHS3 compliance and MSL 1 rating match the original specification.

VS-30CTQ035HN3 (Vishay Parametric Equivalent)

This part provides identical electrical specifications to the main part with matching 15 A current rating and 620 mV forward voltage. The key distinction is AEC-Q101 automotive qualification and automotive-grade designation. This part is in Active product status with high availability. Selection of this part is appropriate for automotive applications or where automotive-grade qualification is required. All other parameters remain equivalent to the original part.

MBR2535CTG (onsemi Cross-Manufacturer Alternative)

This onsemi SWITCHMODE™ series part matches the 35 V voltage rating with doubled 30 A current capacity. The part is in Active product status with high inventory availability. Forward voltage is 820 mV at 30 A. Reverse leakage is significantly lower at 200 µA compared to 2 mA. Operating temperature range extends to -65°C minimum. This part is suitable for applications requiring higher current capability and lower leakage characteristics.

STPS3045CT (STMicroelectronics Cross-Manufacturer Alternative)

This part features a higher 45 V voltage rating with matching 15 A current capacity. The part is in Active product status with extensive inventory availability. Forward voltage is superior at 570 mV at 15 A. Reverse leakage is 200 µA at the higher 45 V rating. Maximum junction temperature reaches 200°C. This part is suitable for applications requiring higher voltage margin or superior forward voltage characteristics.

30CTQ035 (SMC Diode Solutions Parametric Equivalent)

This part from SMC Diode Solutions provides identical electrical specifications with 35 V rating and 15 A current. Forward voltage matches at 620 mV. Reverse leakage is slightly lower at 1 mA. The part is in Active product status with good availability. REACH Status is listed as Affected. This part is suitable as a direct parametric replacement with equivalent performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can VS-30CTQ035-M3 be used as a direct replacement for VS-30CTQ035PBF?

A: Yes. VS-30CTQ035-M3 maintains identical voltage rating (35 V), configuration (1 Pair Common Cathode), technology (Schottky), and package (TO-220-3). The increased current rating (30 A vs. 15 A) is a superset of the original specification and does not prevent substitution. Forward voltage increases to 760 mV at the higher current rating.

Q: What is the difference between VS-30CTQ035HN3 and the main part VS-30CTQ035PBF?

A: Electrical specifications are identical. VS-30CTQ035HN3 includes AEC-Q101 automotive qualification and automotive-grade designation. This part is suitable for automotive applications or designs requiring automotive-qualified components. All other parameters including voltage, current, temperature range, and package remain equivalent.

Q: Is STPS3045CT compatible with a 35 V application?

A: Yes. STPS3045CT has a 45 V rating, which exceeds the 35 V requirement of the original part. The higher voltage rating provides additional safety margin. Current rating matches at 15 A. Forward voltage is superior at 570 mV. The part is suitable for 35 V applications with the benefit of higher voltage headroom.

Q: What are the package compatibility considerations?

A: All substitute parts use the TO-220-3 package, identical to the original VS-30CTQ035PBF. Through Hole mounting type is consistent across all alternatives. PCB layout and thermal management considerations remain unchanged. No mechanical redesign is required for package substitution.

Q: How does reverse leakage differ among the alternatives?

A: The main part and most Vishay alternatives specify 2 mA reverse leakage at 35 V. MBR2535CTG and STPS3045CT specify 200 µA, which is significantly lower. SMC Diode Solutions 30CTQ035 specifies 1 mA. Lower reverse leakage may be beneficial in low-power or precision applications but does not prevent substitution in standard rectification circuits.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the original part specification. REACH status varies: most parts are REACH Unaffected; the SMC Diode Solutions 30CTQ035 is listed as REACH Affected. Verify REACH compliance requirements for your specific application and region.

Q: What is the significance of product status (Active vs. Discontinued)?

A: The main part VS-30CTQ035PBF is discontinued, which necessitates finding alternatives. All listed substitute parts are in Active product status, ensuring ongoing availability and manufacturer support. Active status indicates current production and long-term supply reliability.

Q: Can higher current-rated parts (30 A) be used in 15 A applications?

A: Yes. Parts with higher current ratings (VS-30CTQ035-M3 at 30 A and MBR2535CTG at 30 A) can be used in applications designed for 15 A. The higher rating provides additional thermal margin and current capacity. Forward voltage specifications apply at the rated current; verify that forward voltage at your actual operating current meets application requirements.

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