MBRF20100CT Equivalent & Substitute Parts

Part Overview

The MBRF20100CT is a Schottky diode array manufactured by onsemi, configured as a 1 Pair Common Cathode arrangement with a maximum reverse voltage rating of 100 V and average rectified current of 10 A per diode. The device is housed in a TO-220-3 Full Pack through-hole package and features fast recovery characteristics suitable for switching applications within the SWITCHMODE™ series.

The MBRF20100CT is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and compliance requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io) (per Diode)	10	A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 10 A	mV @ A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	150	µA @ 100 V
Operating Temperature - Junction	-65°C ~ 175°C	°C
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Mounting Type	Through Hole	—
Package / Case	TO-220-3 Full Pack	—

Substitute Part Grouping Explanation

Substitution of the MBRF20100CT is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V (exact match required)
Current - Average Rectified (Io) (per Diode): 10 A (minimum requirement)
Diode Configuration: 1 Pair Common Cathode (exact match required)
Technology: Schottky (exact match required)
Mounting Type: Through Hole (exact match required)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: Acceptable range 770 mV to 950 mV @ 10 A
Current - Reverse Leakage @ Vr: Acceptable range 3.5 µA to 150 µA @ 100 V
Operating Temperature - Junction: Acceptable range -65°C to 175°C (minimum)
Package / Case: TO-220-3 Full Pack or TO-220-3 Full Pack, Isolated Tab (mechanical compatibility)

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

Direct Manufacturer Substitutes: Parts manufactured by onsemi with identical electrical specifications and packaging, differing only in product status or packaging format (tube vs. bulk).

Similar Manufacturer Substitutes: Parts from alternative manufacturers (Vishay, STMicroelectronics) meeting all primary criteria with equivalent or superior electrical performance characteristics.

Parametric Equivalents: Parts meeting all primary electrical criteria with minor variations in secondary parameters such as forward voltage or reverse leakage current, suitable for applications where these variations are within design tolerance.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) @ If [mV @ A]	Reverse Leakage @ Vr [µA]	Tj (Operating) [°C]	Package / Case	Product Status	RoHS Status
MBRF20100CT	onsemi	100	10	850 @ 10	150 @ 100 V	-65 ~ 175	TO-220-3 Full Pack	Obsolete	Non-compliant
MBRF20100CTG	onsemi	100	10	850 @ 10	150 @ 100 V	-65 ~ 175	TO-220-3 Full Pack	Active	ROHS3 Compliant
MBRF20100CTL	SMC Diode Solutions	100	—	800 @ 5	1 @ 100 V	-55 ~ 150	TO-220-3 Full Pack, Isolated Tab	Active	ROHS3 Compliant
MBRF20100CTP	SMC Diode Solutions	100	—	900 @ 10	1 @ 100 V	-55 ~ 150	TO-220-3 Full Pack, Isolated Tab	Active	ROHS3 Compliant
MBRF20H100CT-E3/45	Vishay General Semiconductor - Diodes Division	100	10	770 @ 10	4.5 @ 100 V	-65 ~ 175	TO-220-3 Full Pack, Isolated Tab	Active	ROHS3 Compliant
STPS20H100CFP	STMicroelectronics	100	10	770 @ 10	4.5 @ 100 V	-65 ~ 175	TO-220-3 Full Pack	Active	ROHS3 Compliant
STPS20S100CFP	STMicroelectronics	100	10	850 @ 10	3.5 @ 100 V	-65 ~ 175	TO-220-3 Full Pack	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Replacement (Identical Electrical and Mechanical Specifications):

MBRF20100CTG is the primary direct replacement for the obsolete MBRF20100CT. Both parts are manufactured by onsemi with identical electrical specifications, diode configuration, and package format. MBRF20100CTG carries Active product status and ROHS3 compliance, addressing the regulatory limitations of the original part.

Active Manufacturer Alternatives (Equivalent Electrical Performance):

STPS20H100CFP and STPS20S100CFP, manufactured by STMicroelectronics, provide equivalent electrical performance with improved reverse leakage characteristics (4.5 µA and 3.5 µA respectively, compared to 150 µA in the original part). Both devices maintain the 100 V reverse voltage rating, 10 A average rectified current, and fast recovery speed. STPS20H100CFP features identical forward voltage (770 mV @ 10 A), while STPS20S100CFP matches the original forward voltage specification (850 mV @ 10 A). Both are ROHS3 compliant and carry Active product status.

MBRF20H100CT-E3/45, manufactured by Vishay General Semiconductor - Diodes Division, meets all primary electrical criteria with superior reverse leakage performance (4.5 µA @ 100 V) and lower forward voltage (770 mV @ 10 A). The device features an isolated tab package variant and maintains the full operating temperature range (-65°C ~ 175°C). ROHS3 compliance and Active product status are confirmed.

Alternative Configurations (Modified Package Format):

MBRF20100CTL and MBRF20100CTP, manufactured by SMC Diode Solutions, provide substitution with isolated tab package variants (TO-220-3 Full Pack, Isolated Tab). Both maintain the 100 V reverse voltage rating and 1 Pair Common Cathode configuration. MBRF20100CTP specifies 900 mV @ 10 A forward voltage, while MBRF20100CTL specifies 800 mV @ 5 A. Both exhibit significantly reduced reverse leakage (1 mA @ 100 V) and operate within -55°C ~ 150°C temperature range. ROHS3 compliance is confirmed for both parts.

Compliance Considerations:

The original MBRF20100CT is RoHS non-compliant. All substitute parts listed carry ROHS3 compliance certification, suitable for applications requiring regulatory adherence. MBRF20100CTL and MBRF20100CTP carry REACH Affected status, while all other substitutes maintain REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can MBRF20100CTG be used as a direct replacement for MBRF20100CT?

A: Yes. MBRF20100CTG is manufactured by onsemi with identical electrical specifications (100 V reverse voltage, 10 A average rectified current, 850 mV forward voltage @ 10 A, 150 µA reverse leakage @ 100 V) and package format (TO-220-3 Full Pack). The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Electrical and mechanical compatibility is complete.

Q: What are the differences between STPS20H100CFP and STPS20S100CFP?

A: Both parts are manufactured by STMicroelectronics and meet the primary substitution criteria (100 V reverse voltage, 10 A average rectified current, fast recovery speed, TO-220-3 Full Pack). The key difference is forward voltage specification: STPS20H100CFP specifies 770 mV @ 10 A, while STPS20S100CFP specifies 850 mV @ 10 A (matching the original MBRF20100CT). Reverse leakage differs slightly (4.5 µA vs. 3.5 µA @ 100 V). Selection depends on circuit requirements for forward voltage drop.

Q: Are the isolated tab variants (MBRF20100CTL, MBRF20100CTP) mechanically compatible with the original TO-220-3 Full Pack?

A: The isolated tab variants feature TO-220-3 Full Pack, Isolated Tab package format. While the overall package outline remains TO-220-3, the isolated tab configuration provides electrical isolation between the tab and the mounting surface. This requires verification of PCB layout and thermal management design. Direct mechanical substitution without layout modification is not recommended.

Q: What is the significance of reverse leakage current differences among substitute parts?

A: Reverse leakage current affects power dissipation and circuit performance at elevated temperatures and reverse bias conditions. The original MBRF20100CT specifies 150 µA @ 100 V. Substitute parts offer significantly lower reverse leakage: STPS20H100CFP and MBRF20H100CT-E3/45 specify 4.5 µA, STPS20S100CFP specifies 3.5 µA, and MBRF20100CTL/CTP specify 1 mA. Lower reverse leakage reduces standby power consumption and improves circuit efficiency.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification. The original MBRF20100CT is RoHS non-compliant. Substitution with any listed part addresses RoHS compliance requirements for new production and updated designs.

Q: What is the operating temperature range difference between the original part and substitutes?

A: The original MBRF20100CT operates from -65°C to 175°C. STPS20H100CFP, STPS20S100CFP, and MBRF20H100CT-E3/45 maintain this full range. MBRF20100CTL and MBRF20100CTP operate within a narrower range (-55°C to 150°C). Applications requiring the full -65°C to 175°C range should select from the first group.

Q: Can MBRF20100CT be substituted with a higher current-rated device?

A: The substitute list includes only parts rated at 10 A average rectified current per diode, matching the original specification. Higher current-rated devices are not included as substitutes because they represent design changes rather than equivalent replacements. Circuit redesign would be required to accommodate higher current ratings.

Q: What packaging format differences exist among the substitute parts?

A: Most substitute parts use TO-220-3 Full Pack (standard package). MBRF20100CTL and MBRF20100CTP use TO-220-3 Full Pack, Isolated Tab variant. MBRF20H100CT-E3/45 also uses the isolated tab variant. The isolated tab configuration provides electrical isolation from the mounting surface, requiring PCB design verification before substitution.

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