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MBR20100CT Equivalent & Substitute Parts
Part Overview
The MBR20100CT is a Schottky diode array in a 1 Pair Common Cathode configuration rated for 100 V DC reverse voltage and 10 A average rectified current per diode. Manufactured by Diodes Incorporated, this component is classified as Obsolete, though 146,764 units remain in stock as new original inventory. The part is housed in a TO-220-3 through-hole package and meets automotive-grade specifications with AEC-Q101 qualification.
Due to the obsolete product status, identification of equivalent and substitute parts is necessary for ongoing design support, production continuity, and long-term component availability. Substitute parts must maintain electrical compatibility across voltage, current, and thermal operating ranges while accommodating packaging and mechanical variations.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| 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 | 840 mV @ 10 A | — |
| Speed | Fast Recovery ≤ 500ns, > 200mA (Io) | — |
| Current - Reverse Leakage @ Vr | 50 | nA @ 100 V |
| Operating Temperature - Junction | -55 to 175 | °C |
| Mounting Type | Through Hole | — |
| Package / Case | TO-220-3 | — |
| Grade | Automotive | — |
| Qualification | AEC-Q101 | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the MBR20100CT is determined by the following critical parameters:
Mandatory Compatibility Parameters:
- Diode Configuration: 1 Pair Common Cathode
- Voltage - DC Reverse (Vr) (Max): 100 V minimum
- Mounting Type: Through Hole
- Package / Case: TO-220-3 or equivalent mechanical footprint (TO-220AB, ITO-220AB)
Performance Parameters (Allow Variation Within Limits):
- Current - Average Rectified (Io): 10 A minimum per diode
- Voltage - Forward (Vf): Typically 800–950 mV @ 10 A
- Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
- Operating Temperature - Junction: -55°C minimum to 150°C or higher
Compliance Parameters:
- RoHS Status: ROHS3 Compliant
- Technology: Schottky or Super Barrier (functionally equivalent)
Substitute parts are grouped into two categories:
Category A: Direct Electrical Equivalents (Active Status) Parts with identical or superior electrical ratings, matching diode configuration, and active product status. These include MBR20100CT-G1 (Diodes Incorporated), MBR20100CT (Good-Ark Semiconductor), MBR20100CTP (Littelfuse Inc.), SBR20100CT (Diodes Incorporated), and MBR20100CT-BP (Micro Commercial Co).
Category B: Higher Current Rating Variants (Active Status) Parts with 20 A current rating instead of 10 A, maintaining 100 V reverse voltage and common cathode configuration. These include MBRF20100CT (MDD), MBRF20100CTL (SMC Diode Solutions), MBRF20100CTP (SMC Diode Solutions), SBRF20100CT (SMC Diode Solutions), and MBR20L100CTHC0G (Taiwan Semiconductor Corporation).
Parameter Comparison
| Part Number | Manufacturer | Product Status | Vr (Max) [V] | Io (per Diode) [A] | Vf (Max) [mV] | Tj (°C) | Package | Technology |
|---|---|---|---|---|---|---|---|---|
| MBR20100CT | Diodes Incorporated | Obsolete | 100 | 10 | 840 @ 10A | -55 to 175 | TO-220-3 | Schottky |
| MBR20100CT-G1 | Diodes Incorporated | Active | 100 | 10 | 840 @ 10A | -55 to 175 | TO-220-3 | Schottky |
| MBR20100CT | Good-Ark Semiconductor | Active | 100 | 10 | — | — | TO-220-3 Full Pack, Isolated Tab | Schottky |
| MBR20100CTP | Littelfuse Inc. | Active | 100 | 10 | 900 @ 10A | -55 to 150 | TO-220-3 | Schottky |
| SBR20100CT | Diodes Incorporated | Active | 100 | 10 | 820 @ 10A | -65 to 175 | TO-220-3 | Super Barrier |
| MBR20100CT-BP | Micro Commercial Co | Active | 100 | 10 | 950 @ 20A | -55 to 150 | TO-220-3 | Schottky |
| MBRF20100CT | MDD | Active | 100 | 20 | 950 @ 10A | -55 to 150 | TO-220AB | Schottky |
| MBRF20100CTL | SMC Diode Solutions | Active | 100 | — | 800 @ 5A | -55 to 150 | TO-220-3 Full Pack, Isolated Tab | Schottky |
| MBRF20100CTP | SMC Diode Solutions | Active | 100 | — | 900 @ 10A | -55 to 150 | TO-220-3 Full Pack, Isolated Tab | Schottky |
| SBRF20100CT | SMC Diode Solutions | Active | 100 | — | 940 @ 10A | -55 to 150 | TO-220-3 Full Pack, Isolated Tab | Schottky |
| MBR20L100CTHC0G | Taiwan Semiconductor Corporation | Active | 100 | 20 | 850 @ 20A | -55 to 150 | TO-220-3 | Schottky |
Engineering Selection Recommendations
For Direct Replacement (10 A Rating, Identical Electrical Performance):
MBR20100CT-G1 (Diodes Incorporated) is the primary active equivalent. It maintains identical electrical specifications to the obsolete MBR20100CT, including 100 V reverse voltage, 10 A average rectified current, 840 mV forward voltage at 10 A, and -55°C to 175°C operating range. Product status is Active with 1,762 units in stock. This part is recommended for applications requiring exact electrical compatibility without design modification.
SBR20100CT (Diodes Incorporated) offers an alternative using Super Barrier technology instead of Schottky. It provides superior forward voltage characteristics (820 mV @ 10 A versus 840 mV) and extended upper temperature rating (-65°C to 175°C). Product status is Active with 27,055 units in stock. This part is suitable for applications where lower forward voltage drop or extended temperature range provides system benefit.
MBR20100CTP (Littelfuse Inc.) maintains 100 V / 10 A specifications with slightly elevated forward voltage (900 mV @ 10 A) and reduced upper temperature limit (-55°C to 150°C). Product status is Active with 16,330 units in stock. This part is compatible for applications not requiring the full 175°C upper temperature rating.
MBR20100CT-BP (Micro Commercial Co) is manufacturer-recommended and maintains 100 V / 10 A core specifications. Product status is Active with 5,013 units in stock. Forward voltage specification is provided at 20 A (950 mV), requiring application-level verification for 10 A operation.
For Higher Current Applications (20 A Rating):
MBR20L100CTHC0G (Taiwan Semiconductor Corporation) provides 20 A average rectified current while maintaining 100 V reverse voltage. It includes automotive-grade classification and AEC-Q101 qualification, matching the original part's compliance profile. Forward voltage is 850 mV @ 20 A. Product status is Active with 1,003 units in stock. This part is suitable for applications requiring increased current capacity without voltage derating.
MBRF20100CT (MDD) offers 20 A rating with 100 V reverse voltage and Fast Recovery speed. Product status is Active with 55,200 units in stock. This part accommodates higher current requirements with established supply availability.
Compliance and Certification:
All recommended substitute parts maintain ROHS3 compliance and are manufactured using Schottky or Super Barrier technology. MBR20L100CTHC0G includes automotive-grade classification and AEC-Q101 qualification, matching the original part's qualification status. Parts from Diodes Incorporated (MBR20100CT-G1, SBR20100CT) provide direct manufacturer continuity from the original supplier.
Frequently Asked Questions (FAQ)
Q: Can MBR20100CT-G1 be used as a direct replacement for the obsolete MBR20100CT?
A: Yes. MBR20100CT-G1 is manufactured by Diodes Incorporated and maintains identical electrical specifications: 100 V reverse voltage, 10 A average rectified current per diode, 840 mV forward voltage at 10 A, and -55°C to 175°C operating temperature range. The part is in Active product status with 1,762 units in stock. No circuit modification is required.
Q: What is the difference between Schottky and Super Barrier technology in these diodes?
A: Both technologies are Schottky-type rectifiers. Super Barrier (SBR) technology, used in SBR20100CT, typically provides lower forward voltage drop and improved reverse recovery characteristics compared to standard Schottky. For the MBR20100CT application, SBR20100CT offers 820 mV forward voltage versus 840 mV, representing approximately 2.4% reduction in forward drop.
Q: Can I use a 20 A rated part (MBRF20100CT or MBR20L100CTHC0G) in place of the 10 A rated MBR20100CT?
A: Yes, from an electrical compatibility standpoint. Both 20 A variants maintain 100 V reverse voltage and 1 Pair Common Cathode configuration. The higher current rating provides design margin and does not degrade performance in 10 A applications. However, verify that the specific package variant (TO-220AB versus TO-220-3) is mechanically compatible with the PCB layout.
Q: What is the significance of "Full Pack, Isolated Tab" packaging mentioned for some parts?
A: This refers to mechanical package construction. Standard TO-220-3 packages have a common tab connection. "Full Pack, Isolated Tab" variants (ITO-220AB) provide electrical isolation of the tab from the diode array, preventing unintended current paths through the mounting hardware. Verify PCB design compatibility before substitution.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed maintain ROHS3 compliance status, matching the original MBR20100CT specification.
Q: Which substitute part has the lowest forward voltage drop?
A: SBR20100CT (Diodes Incorporated) provides the lowest forward voltage at 820 mV @ 10 A, compared to 840 mV for the original MBR20100CT. This represents a 20 mV reduction and may provide thermal benefit in high-current applications.
Q: What is the operating temperature range difference between substitute parts?
A: The original MBR20100CT operates from -55°C to 175°C. Most substitute parts operate from -55°C to 150°C, representing a 25°C reduction in upper temperature limit. SBR20100CT extends the lower limit to -65°C while maintaining 175°C upper limit. Verify application thermal requirements before selection.
Q: Is automotive-grade qualification maintained across all substitute parts?
A: No. The original MBR20100CT includes automotive-grade classification and AEC-Q101 qualification. Among substitutes, only MBR20L100CTHC0G (Taiwan Semiconductor Corporation) maintains both automotive-grade and AEC-Q101 qualification. Other parts are industrial-grade unless otherwise specified. For automotive applications, MBR20L100CTHC0G is the recommended substitute.
Q: What is the inventory status for each substitute part?
A: MBR20100CT-G1: 1,762 units; MBR20100CT (Good-Ark): 146,764 units; MBR20100CTP: 16,330 units; SBR20100CT: 27,055 units; MBRF20100CT: 55,200 units; MBRF20100CTL: 1,392 units; MBRF20100CTP: 1,483 units; SBRF20100CT: 2,839 units; MBR20100CT-BP: 5,013 units; MBR20L100CTHC0G: 1,003 units. Parts with higher inventory (Good-Ark, Littelfuse, MDD) provide greater supply security for long-term production.
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