MBR20100CTG Equivalent & Substitute Parts

Part Overview

The MBR20100CTG is a Schottky diode array manufactured by onsemi, configured as 1 pair common cathode with 100 V reverse voltage rating and 10 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 -65°C to 175°C. This part is classified as obsolete, 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)	100 V
Current - Average Rectified (Io) (per Diode)	10 A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 10 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	100 µA @ 100 V
Operating Temperature - Junction	-65°C ~ 175°C
Mounting Type	Through Hole
Package / Case	TO-220-3
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MBR20100CTG is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

Diode configuration must be 1 pair common cathode
Technology must be Schottky
Voltage - DC Reverse (Vr) must be 100 V minimum
Current - Average Rectified (Io) must be 10 A minimum per diode
Mounting type must be through hole
Package must be TO-220-3 or compatible TO-220 variant

Acceptable Variation Ranges:

Forward voltage (Vf) at rated current: acceptable within ±150 mV of specified value
Reverse leakage current: acceptable up to 150 µA @ 100 V
Operating temperature range: minimum -55°C to +150°C acceptable; extended range to -65°C to +175°C preferred
Current rating: 10 A minimum; higher ratings (15 A, 20 A) acceptable for applications requiring additional margin

Substitute parts are categorized as direct manufacturer equivalents, similar parts with compatible parameters, or parametric equivalents meeting all critical electrical specifications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Reverse Leakage @ Vr	Tj (Operating)	Package	Status
MBR20100CTG	onsemi	100 V	10 A	850 mV @ 10 A	100 µA @ 100 V	-65°C ~ 175°C	TO-220-3	Obsolete
MBR20100CT-E3/4W	Vishay General Semiconductor - Diodes Division	100 V	10 A	800 mV @ 10 A	100 µA @ 100 V	-65°C ~ 150°C	TO-220-3	Active
MBR10100CT	Taiwan Semiconductor Corporation	100 V	10 A	950 mV @ 10 A	100 µA @ 100 V	-55°C ~ 150°C	TO-220-3	Discontinued at DiGi Electronics
MBR20100CT-BP	Micro Commercial Co	100 V	10 A	950 mV @ 20 A	150 µA @ 100 V	-55°C ~ 150°C	TO-220-3	Active
MBR20100CT_T0_00001	Panjit International Inc.	100 V	20 A	800 mV @ 10 A	50 µA @ 100 V	-65°C ~ 175°C	TO-220-3	Active
SDT30A100CT	Diodes Incorporated	100 V	15 A	730 mV @ 15 A	100 µA @ 100 V	-55°C ~ 150°C	TO-220-3	Active
STPS20100CT	STMicroelectronics	100 V	10 A	950 mV @ 20 A	150 µA @ 100 V	-55°C ~ 175°C	TO-220-3	Active
STPS20H100CR	STMicroelectronics	100 V	10 A	770 mV @ 10 A	4.5 µA @ 100 V	-55°C ~ 175°C	TO-262-3 Long Leads, I2PAK, TO-262AA	Active
STPS20H100CT	STMicroelectronics	100 V	10 A	770 mV @ 10 A	4.5 µA @ 100 V	-55°C ~ 175°C	TO-220-3	Active
MBR10L100CTHC0G	Taiwan Semiconductor Corporation	100 V	10 A	850 mV @ 10 A	20 µA @ 100 V	-55°C ~ 150°C	TO-220-3	Active
MBR20H100CTG-E3/45	Vishay General Semiconductor - Diodes Division	100 V	10 A	850 mV @ 10 A	3.5 µA @ 100 V	-65°C ~ 175°C	TO-220-3	Active

Engineering Selection Recommendations

Direct Manufacturer Equivalent (Preferred for Direct Replacement):

MBR20100CT-E3/4W from Vishay General Semiconductor - Diodes Division is the direct manufacturer equivalent. This part maintains the same base product number (MBR20100), identical electrical specifications at rated current, and is currently in active production status. The forward voltage is 50 mV lower (800 mV vs. 850 mV @ 10 A), representing improved performance. The operating temperature range extends to -65°C minimum, matching the original specification. This part is RoHS3 compliant and carries REACH unaffected status.

Primary Active Substitutes (TO-220-3 Package):

STPS20H100CT from STMicroelectronics provides the closest electrical performance match with forward voltage of 770 mV @ 10 A and significantly reduced reverse leakage current (4.5 µA vs. 100 µA @ 100 V). This part maintains the full operating temperature range (-55°C to 175°C) and is available in high inventory (195,950 pcs). RoHS3 compliance and REACH unaffected status are confirmed.

MBR20H100CTG-E3/45 from Vishay General Semiconductor - Diodes Division matches the original part's full operating temperature range (-65°C to 175°C) and forward voltage specification (850 mV @ 10 A). Reverse leakage current is significantly lower (3.5 µA vs. 100 µA @ 100 V). RoHS3 compliance and REACH unaffected status are confirmed.

Higher Current Rating Substitute:

MBR20100CT_T0_00001 from Panjit International Inc. provides 20 A current rating (double the original 10 A specification) while maintaining 100 V reverse voltage. Forward voltage is 800 mV @ 10 A. This part extends the operating temperature range to -65°C to 175°C, matching the original specification. RoHS3 compliance is confirmed.

Alternative Package Consideration:

STPS20H100CR from STMicroelectronics provides identical electrical specifications to STPS20H100CT but in TO-262-3 (I2PAK) package. This part is suitable only for applications where PCB layout accommodates the alternative package footprint.

Parametric Equivalents:

MBR10L100CTHC0G from Taiwan Semiconductor Corporation meets all critical electrical parameters with automotive-grade qualification (AEC-Q101). This part is suitable for applications requiring automotive-level reliability. Reverse leakage current is 20 µA @ 100 V. Operating temperature range is -55°C to 150°C.

SDT30A100CT from Diodes Incorporated provides 15 A current rating with forward voltage of 730 mV @ 15 A, representing improved thermal performance. This part is suitable for applications requiring additional current margin.

Frequently Asked Questions (FAQ)

Q: Can MBR20100CT-E3/4W directly replace MBR20100CTG without circuit modification?

A: Yes. MBR20100CT-E3/4W is the direct manufacturer equivalent with identical diode configuration, voltage rating, and current rating. The 50 mV lower forward voltage (800 mV vs. 850 mV @ 10 A) represents improved performance and does not require circuit modification. Both parts are 1 pair common cathode Schottky diodes in TO-220-3 package.

Q: What is the difference between TO-220-3 and TO-220AB package designations?

A: TO-220-3 and TO-220AB both refer to the same three-lead through-hole package. The designations are manufacturer-specific nomenclature for the identical physical package. Parts specified as TO-220AB are mechanically and electrically compatible with TO-220-3 applications.

Q: Can I use STPS20H100CR (I2PAK package) as a substitute for the TO-220-3 package?

A: STPS20H100CR is electrically equivalent but uses TO-262-3 (I2PAK) package instead of TO-220-3. Substitution requires PCB redesign to accommodate the different package footprint. The I2PAK package provides improved thermal performance due to larger copper contact area.

Q: Why do some substitute parts have higher reverse leakage current specifications?

A: Reverse leakage current varies by manufacturer process technology and device design. Parts with higher leakage (up to 150 µA @ 100 V) remain within acceptable substitution parameters. For applications sensitive to leakage current, STPS20H100CT (4.5 µA) or MBR20H100CTG-E3/45 (3.5 µA) provide superior performance.

Q: Is MBR10100CT suitable as a substitute despite being discontinued?

A: MBR10100CT meets all critical electrical parameters but is discontinued at DiGi Electronics. Forward voltage is 950 mV @ 10 A, which is 100 mV higher than the original specification. This part should be avoided for new designs due to discontinued status and higher forward voltage.

Q: What is the advantage of selecting MBR20100CT_T0_00001 with 20 A rating?

A: MBR20100CT_T0_00001 provides double the current rating (20 A vs. 10 A) while maintaining 100 V reverse voltage. This part is suitable for applications requiring additional current margin or thermal headroom. The 20 A rating does not require circuit modification for 10 A applications and provides design flexibility for future upgrades.

Q: Are all substitute parts RoHS3 compliant?

A: All active substitute parts listed are RoHS3 compliant. MBR10100CT (discontinued) is also RoHS3 compliant. Compliance status is confirmed for all parts in this reference.

Q: What is the significance of AEC-Q101 qualification on MBR10L100CTHC0G?

A: AEC-Q101 qualification indicates automotive-grade reliability testing and qualification. MBR10L100CTHC0G is suitable for automotive applications requiring enhanced reliability standards. This qualification is not required for general industrial applications.

Q: Can I mix different substitute parts in the same circuit?

A: Yes, all listed substitute parts meet the critical electrical parameters (100 V reverse voltage, 10 A minimum current rating, 1 pair common cathode configuration, TO-220-3 package). Mixing different manufacturers in the same circuit is acceptable from an electrical standpoint. However, thermal design should account for forward voltage variations (770 mV to 950 mV @ rated current) to ensure consistent heat dissipation across multiple devices.

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