MBR2535CTG Equivalent & Substitute Parts

Part Overview

The MBR2535CTG is a Schottky diode array manufactured by onsemi, configured as a 1 Pair Common Cathode arrangement in a TO-220-3 through-hole package. This component is rated for 35 V DC reverse voltage and 30 A average rectified current per diode, with a maximum forward voltage of 820 mV at 30 A. The part is currently in active production status and is RoHS3 compliant.

Identification of substitute parts becomes necessary when the primary component reaches end-of-life status, experiences supply constraints, or when design requirements permit operation within the electrical and mechanical parameters of alternative qualified devices.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	35	V
Current - Average Rectified (Io) (per Diode)	30	A
Voltage - Forward (Vf) (Max) @ If	820 mV @ 30 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Operating Temperature - Junction	-65 to 175	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—

Substitute Part Grouping Explanation

Substitution of the MBR2535CTG is evaluated based on the following critical parameters:

Configuration Match: The substitute part must maintain the same diode configuration (1 Pair Common Cathode) to ensure pin compatibility and functional equivalence.

Technology Match: Both the main part and substitute must use Schottky technology to preserve switching characteristics and forward voltage performance.

Electrical Ratings: The substitute part must meet or exceed the voltage and current specifications of the primary component. The MBR2535CTG operates at 35 V maximum reverse voltage and 30 A average rectified current. A substitute part with lower ratings cannot be used in applications requiring these specifications.

Package Compatibility: The TO-220-3 through-hole package is mandatory for mechanical and thermal interface compatibility.

Speed Characteristics: Fast recovery performance (≤ 500ns, > 200mA) must be maintained.

The STPS30L30CT is evaluated against these criteria and exhibits deviations in maximum reverse voltage (30 V versus 35 V) and average rectified current (15 A versus 30 A), which restrict its application scope.

Parameter Comparison

Parameter	MBR2535CTG (Main Part)	STPS30L30CT (Substitute)
Manufacturer	onsemi	Vishay General Semiconductor - Diodes Division
Product Status	Active	Obsolete
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	35 V	30 V
Current - Average Rectified (Io) (per Diode)	30 A	15 A
Voltage - Forward (Vf) (Max) @ If	820 mV @ 30 A	460 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 35 V	1.5 mA @ 30 V
Operating Temperature - Junction	-65 to 175°C	Max 150°C
Mounting Type	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3
RoHS Status	RoHS3 Compliant	RoHS non-compliant

Engineering Selection Recommendations

Primary Component (MBR2535CTG): This part is the preferred selection for new designs and ongoing production. It maintains active product status, full RoHS3 compliance, and superior electrical specifications including higher reverse voltage rating (35 V) and current capacity (30 A per diode).

Substitute Consideration (STPS30L30CT): This part is obsolete and RoHS non-compliant. Its reduced electrical ratings (30 V reverse voltage, 15 A current) and lower maximum junction temperature (150°C) restrict its application to circuits with lower voltage and current requirements. The higher reverse leakage current (1.5 mA at 30 V) may impact circuit performance in sensitive applications. This part is not suitable for direct replacement in applications designed for the MBR2535CTG specifications.

For applications requiring a substitute due to MBR2535CTG unavailability, alternative parts with equivalent or superior ratings should be sourced rather than accepting the electrical and compliance limitations of the STPS30L30CT.

Frequently Asked Questions (FAQ)

Q: Can the STPS30L30CT be used as a direct replacement for the MBR2535CTG?

A: No. The STPS30L30CT has lower maximum reverse voltage (30 V versus 35 V) and reduced current capacity (15 A versus 30 A per diode). Direct substitution is only permissible in applications designed for the lower electrical specifications of the STPS30L30CT.

Q: What are the critical parameters that must match for substitution?

A: Diode configuration (1 Pair Common Cathode), technology (Schottky), package type (TO-220-3), and mounting method (through-hole) must remain identical. Electrical ratings must meet or exceed the application requirements.

Q: Why is the STPS30L30CT listed as obsolete?

A: The STPS30L30CT is no longer in active production. Obsolete status indicates limited or no availability through standard distribution channels.

Q: Does the STPS30L30CT meet RoHS compliance requirements?

A: No. The STPS30L30CT is RoHS non-compliant, whereas the MBR2535CTG is RoHS3 compliant. This is a significant consideration for applications subject to RoHS regulations.

Q: How do the forward voltage characteristics compare?

A: The MBR2535CTG exhibits 820 mV forward voltage at 30 A, while the STPS30L30CT exhibits 460 mV at 15 A. These measurements are taken at different current levels and cannot be directly compared for circuit performance prediction.

Q: What is the impact of the higher reverse leakage current in the STPS30L30CT?

A: The STPS30L30CT has reverse leakage of 1.5 mA at 30 V compared to 200 µA at 35 V for the MBR2535CTG. Higher leakage current increases power dissipation and may affect circuit stability in precision applications.

Q: Are the operating temperature ranges compatible?

A: No. The MBR2535CTG operates from -65°C to 175°C, while the STPS30L30CT is limited to a maximum of 150°C. Applications requiring the full temperature range of the MBR2535CTG cannot use the STPS30L30CT.

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