NRTST40H100CTG Equivalent & Substitute Parts

Part Overview

The NRTST40H100CTG is a Schottky diode array manufactured by onsemi, configured as a 1 Pair Common Cathode with 100 V reverse voltage rating and 20 A average rectified current per diode. The device is packaged in TO-220-3 through-hole configuration and operates across a junction temperature range of -55°C to 150°C.

This part is classified as obsolete. Identifying equivalent and substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode array.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io) (per Diode)	20 A
Voltage - Forward (Vf) (Max) @ If	760 mV @ 20 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	50 µA @ 100 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the NRTST40H100CTG is determined by the following critical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode (mandatory match)
Technology: Schottky (mandatory match)
Voltage - DC Reverse (Vr) (Max): 100 V (mandatory match)
Current - Average Rectified (Io) (per Diode): 20 A (mandatory match for direct substitution)
Package / Case: TO-220-3 (mandatory match for through-hole mounting compatibility)
Mounting Type: Through Hole (mandatory match)

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: Acceptable range 730 mV to 850 mV @ rated current
Current - Reverse Leakage @ Vr: Acceptable range 1 µA to 220 µA @ 100 V
Operating Temperature - Junction: Minimum -40°C to maximum 175°C acceptable
RoHS Status: ROHS3 Compliant or RoHS Compliant

Substitute parts are grouped into two categories:

Category 1: Direct Parametric Equivalents (100% Parameter Match) Parts matching all primary substitution criteria with identical electrical specifications.

Category 2: Functional Equivalents (Relaxed Current Rating) Parts with identical voltage and configuration but reduced current ratings (10 A) or increased current ratings (30 A), suitable for applications where the exact 20 A specification is not critical.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Reverse Leakage @ Vr	Tj (Operating Range)	Package	Product Status
NRTST40H100CTG	onsemi	100 V	20 A	760 mV @ 20 A	50 µA @ 100 V	-55°C ~ 150°C	TO-220-3	Obsolete
MBR41H100CTG	onsemi	100 V	20 A	800 mV @ 20 A	10 µA @ 100 V	-55°C ~ 175°C	TO-220-3	Active
VX40M100C-M3/P	Vishay General Semiconductor - Diodes Division	100 V	20 A	760 mV @ 20 A	220 µA @ 100 V	-40°C ~ 175°C	TO-220-3	Active
VX40M100CHM3/P	Vishay General Semiconductor - Diodes Division	100 V	20 A	760 mV @ 20 A	220 µA @ 100 V	-40°C ~ 175°C	TO-220-3	Active
V40100C-M3/4W	Vishay General Semiconductor - Diodes Division	100 V	20 A	730 mV @ 20 A	1 mA @ 100 V	-40°C ~ 150°C	TO-220-3	Active
STPS60H100CT	STMicroelectronics	100 V	30 A	840 mV @ 30 A	10 µA @ 100 V	-55°C ~ 175°C	TO-220-3	Active
MPE-220A	Sanken Electric USA Inc.	100 V	10 A	850 mV @ 10 A	1 µA @ 100 V	-40°C ~ 150°C	TO-220-3	Active
MPE-220AVR	Sanken Electric USA Inc.	100 V	20 A	850 mV @ 10 A	1 µA @ 100 V	-40°C ~ 150°C	TO-252-4, DPAK	Active
MPE-220AVL	Sanken Electric USA Inc.	100 V	10 A	850 mV @ 10 A	1 µA @ 100 V	-40°C ~ 150°C	TO-252-4, DPAK	Active

Engineering Selection Recommendations

Primary Recommendation: MBR41H100CTG (onsemi)

The MBR41H100CTG is the preferred direct substitute for the obsolete NRTST40H100CTG. Both parts are manufactured by onsemi and share identical electrical specifications: 100 V reverse voltage, 20 A average rectified current per diode, and TO-220-3 packaging. The MBR41H100CTG is classified as active product status with SWITCHMODE™ series designation, ensuring long-term availability. The forward voltage specification (800 mV @ 20 A) is marginally higher than the original part (760 mV @ 20 A), and reverse leakage is significantly lower (10 µA versus 50 µA), representing improved performance characteristics. The maximum junction temperature extends to 175°C compared to 150°C on the original part. RoHS3 compliance is maintained.

Secondary Recommendations: Vishay Alternatives

The VX40M100C-M3/P and VX40M100CHM3/P from Vishay General Semiconductor - Diodes Division provide parametric equivalence with identical 100 V, 20 A, TO-220-3 specifications. Both parts feature forward voltage matching the original specification (760 mV @ 20 A) and extended junction temperature range (-40°C to 175°C). These parts carry AEC-Q101 automotive qualification and are suitable for applications requiring automotive-grade components. The VX40M100CHM3/P is a variant of VX40M100C-M3/P with identical electrical characteristics.

The V40100C-M3/4W from Vishay offers the lowest forward voltage (730 mV @ 20 A) among available substitutes, providing superior thermal efficiency. This part is also AEC-Q101 qualified and maintains TO-220-3 packaging. Operating temperature range is -40°C to 150°C, matching the original part's maximum temperature.

Higher Current Alternative: STPS60H100CT (STMicroelectronics)

The STPS60H100CT provides increased current capacity (30 A per diode) while maintaining 100 V reverse voltage and TO-220-3 packaging. This part is suitable for applications where the original 20 A specification represents a design margin and higher current capability is beneficial. Product status is active with extended junction temperature range (175°C maximum). Forward voltage is 840 mV @ 30 A.

Lower Current Alternatives: MPE-220A and MPE-220AVL (Sanken Electric USA Inc.)

The MPE-220A and MPE-220AVL provide 10 A current rating with 100 V reverse voltage and Schottky technology. These parts are suitable for applications where 20 A capacity exceeds actual requirements. The MPE-220A maintains TO-220-3 through-hole packaging identical to the original part. The MPE-220AVL uses TO-252-4 DPAK surface-mount packaging and is supplied on tape and reel. Both parts feature extremely low reverse leakage (1 µA @ 100 V) and are RoHS compliant.

Package Consideration: MPE-220AVR

The MPE-220AVR from Sanken Electric USA Inc. matches the 20 A current specification and 100 V voltage rating but uses TO-252-4 DPAK surface-mount packaging instead of through-hole TO-220-3. This part is suitable only for applications where PCB redesign to accommodate surface-mount packaging is feasible.

Frequently Asked Questions (FAQ)

Q: Can MBR41H100CTG directly replace NRTST40H100CTG without circuit modification?

A: Yes. The MBR41H100CTG is a direct parametric equivalent with identical diode configuration (1 Pair Common Cathode), reverse voltage (100 V), average rectified current (20 A per diode), and TO-220-3 packaging. Pin-to-pin compatibility is maintained. The improved performance characteristics (lower reverse leakage, extended temperature range) present no compatibility issues.

Q: What is the difference between VX40M100C-M3/P and VX40M100CHM3/P?

A: Both parts are parametrically identical with 100 V reverse voltage, 20 A current rating, 760 mV forward voltage @ 20 A, and TO-220-3 packaging. The VX40M100CHM3/P is a variant designation within the same product family. Selection between these parts should be based on supplier availability and packaging specifications.

Q: Can STPS60H100CT be used as a drop-in replacement?

A: Yes, for through-hole mounting applications. The STPS60H100CT maintains TO-220-3 packaging and 100 V reverse voltage specification. The increased current rating (30 A versus 20 A) does not create compatibility issues; the part operates within the original circuit's voltage and configuration requirements. Forward voltage is slightly higher (840 mV @ 30 A versus 760 mV @ 20 A), which may result in marginally increased power dissipation in high-current applications.

Q: Are the Vishay parts (V40100C-M3/4W, VX40M100C-M3/P, VX40M100CHM3/P) suitable for automotive applications?

A: Yes. All three Vishay parts carry AEC-Q101 automotive qualification and are suitable for automotive-grade applications. The V40100C-M3/4W and VX40M100C-M3/P are explicitly designated with automotive grade classification.

Q: What is the primary advantage of MPE-220A over the original NRTST40H100CTG?

A: The MPE-220A provides significantly lower reverse leakage current (1 µA @ 100 V versus 50 µA @ 100 V), resulting in reduced standby power consumption. However, the reduced current rating (10 A versus 20 A) limits its application to circuits where the original 20 A specification exceeds actual requirements.

Q: Can MPE-220AVR be used in place of NRTST40H100CTG?

A: The MPE-220AVR matches the 20 A current specification and 100 V voltage rating but uses TO-252-4 DPAK surface-mount packaging instead of TO-220-3 through-hole packaging. Direct substitution is not possible without PCB redesign. This part is suitable only for new designs or applications where surface-mount conversion is planned.

Q: What is the significance of the forward voltage differences among substitute parts?

A: Forward voltage differences (ranging from 730 mV to 850 mV @ rated current) directly impact power dissipation and thermal performance. Lower forward voltage (V40100C-M3/4W at 730 mV) reduces heat generation, while higher forward voltage (MPE-220A/MPE-220AVL at 850 mV) increases dissipation. Selection should consider thermal design requirements and heat sink capacity of the application.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are either ROHS3 Compliant or RoHS Compliant, maintaining environmental compliance with the original NRTST40H100CTG specification.

Q: What is the operating temperature range consideration for substitute selection?

A: The original NRTST40H100CTG operates from -55°C to 150°C. Most active substitutes extend the maximum temperature to 175°C, providing improved thermal margin. The minimum operating temperature varies: onsemi and STMicroelectronics parts maintain -55°C minimum, while Vishay and Sanken parts specify -40°C minimum. Selection should verify that the substitute's temperature range encompasses the application's actual operating environment.

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