STPS20M100SFP Equivalent & Substitute Parts

Part Overview

The STPS20M100SFP is a Schottky rectifier diode manufactured by STMicroelectronics, rated for 100 V DC reverse voltage and 20 A average rectified current in a TO-220FPAB through-hole package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical performance within the specified voltage and current ratings while accommodating package and configuration variations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	20	A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 20 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	40	µA @ 100 V
Technology	Schottky	—
Mounting Type	Through Hole	—
Package / Case	TO-220-3 Full Pack	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the STPS20M100SFP is determined by the following critical parameters:

Mandatory Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 20 A minimum per diode
Technology: Schottky
Mounting Type: Through Hole
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Package Compatibility: Substitute parts must use TO-220-series packages (TO-220AB, TO-220-3 Full Pack, or equivalent variants) to maintain mechanical and thermal interface compatibility with existing PCB layouts and heat sink mounting arrangements.

Electrical Performance: Forward voltage (Vf) and reverse leakage current (Ir) variations within the substitute parts are acceptable provided they do not exceed the maximum ratings of the original design. Reverse leakage current up to 1 mA @ 100 V is within acceptable limits for Schottky rectifier applications.

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and EAR99 export classification to ensure regulatory continuity.

Parameter Comparison

Parameter	STPS20M100SFP (Main)	MBRF20100CT	MBRF20100CTL	MBRF20100CTP	SBRF20100CT	MBR20100FCT_T0_00001
Manufacturer	STMicroelectronics	MDD	SMC Diode Solutions	SMC Diode Solutions	SMC Diode Solutions	Panjit International Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	20 A	20 A	—	—	—	20 A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 20 A	950 mV @ 10 A	800 mV @ 5 A	900 mV @ 10 A	940 mV @ 10 A	800 mV @ 10 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	40 µA @ 100 V	1 mA @ 200 V	1 mA @ 100 V	1 mA @ 100 V	1 mA @ 100 V	50 µA @ 100 V
Operating Temperature - Junction	150°C (Max)	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 175°C
Package / Case	TO-220-3 Full Pack	TO-220AB	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	2100 Pcs (Obsolete)	55200 Pcs	1392 Pcs	1483 Pcs	2839 Pcs	20200 Pcs

Engineering Selection Recommendations

Primary Substitute: MBR20100FCT_T0_00001 (Panjit International Inc.)

The MBR20100FCT_T0_00001 provides the closest electrical equivalence to the STPS20M100SFP. This part maintains the 100 V / 20 A rating specification, offers superior reverse leakage performance (50 µA @ 100 V versus 40 µA @ 100 V), and extends the operating temperature range to -65°C ~ 175°C. The part is active in production with substantial inventory availability (20200 Pcs). ROHS3 compliance and REACH unaffected status ensure regulatory continuity. The TO-220-3 Full Pack configuration provides direct mechanical compatibility with existing PCB layouts.

Secondary Substitute: MBRF20100CTL (SMC Diode Solutions)

The MBRF20100CTL is a 1 Pair Common Cathode diode array configuration in TO-220-3 Full Pack with isolated tab. This part meets the 100 V reverse voltage and fast recovery speed requirements. Forward voltage performance (800 mV @ 5 A) is superior to the main part. The isolated tab feature provides enhanced thermal management. Product status is active with 1392 Pcs inventory. ROHS3 compliance is maintained; however, REACH status is affected, requiring compliance verification in regulated markets.

Tertiary Substitute: MBRF20100CTP (SMC Diode Solutions)

The MBRF20100CTP offers equivalent electrical specifications to MBRF20100CTL with forward voltage rated at 900 mV @ 10 A. This 1 Pair Common Cathode configuration in TO-220-3 Full Pack with isolated tab maintains 100 V reverse voltage and fast recovery characteristics. Product status is active with 1483 Pcs inventory. ROHS3 compliance is maintained; REACH status is affected.

Alternative Substitute: SBRF20100CT (SMC Diode Solutions)

The SBRF20100CT is a 1 Pair Common Cathode diode array in TO-220-3 Full Pack with isolated tab, rated for 100 V reverse voltage and fast recovery speed. Forward voltage is specified at 940 mV @ 10 A. Product status is active with 2839 Pcs inventory. ROHS3 compliance is maintained; REACH status is affected.

Supplementary Substitute: MBRF20100CT (MDD)

The MBRF20100CT is a diode array rated for 100 V reverse voltage and 20 A per diode. This part uses TO-220AB package configuration, which differs from the original TO-220-3 Full Pack. Forward voltage is specified at 950 mV @ 10 A. Product status is active with 55200 Pcs inventory. ROHS3 compliance is maintained; REACH status is unaffected. Package configuration variation requires PCB layout verification.

Frequently Asked Questions (FAQ)

Q: Can the STPS20M100SFP be directly replaced with any of the listed substitute parts?

A: Direct replacement depends on circuit configuration and package constraints. The MBR20100FCT_T0_00001 provides the closest electrical equivalence with identical TO-220-3 Full Pack configuration. Parts with 1 Pair Common Cathode configuration (MBRF20100CTL, MBRF20100CTP, SBRF20100CT) require circuit topology verification to confirm compatibility with the original single-diode application.

Q: What is the significance of the "1 Pair Common Cathode" configuration in substitute parts?

A: The 1 Pair Common Cathode configuration indicates that the package contains two diodes with a shared cathode connection. This differs from the single-diode STPS20M100SFP. Applications requiring a single diode must either use only one diode in the pair or select single-diode alternatives such as MBR20100FCT_T0_00001 or MBRF20100CT.

Q: Are there package compatibility concerns when substituting the STPS20M100SFP?

A: The STPS20M100SFP uses TO-220FPAB package. Substitute parts use TO-220AB, TO-220-3 Full Pack, or TO-220-3 Full Pack with isolated tab configurations. All are TO-220-series packages with identical pin pitch and mounting hole spacing, ensuring mechanical compatibility with standard TO-220 heat sinks and PCB footprints. The isolated tab feature in some substitutes provides improved thermal isolation but does not affect mechanical fit.

Q: What are the forward voltage differences among substitute parts, and do they affect circuit performance?

A: Forward voltage specifications vary across substitutes: MBRF20100CTL (800 mV @ 5 A), MBR20100FCT_T0_00001 (800 mV @ 10 A), MBRF20100CTP (900 mV @ 10 A), SBRF20100CT (940 mV @ 10 A), and MBRF20100CT (950 mV @ 10 A). The original STPS20M100SFP is specified at 850 mV @ 20 A. Forward voltage variations of ±100 mV are typical within Schottky rectifier product families and generally do not require circuit redesign. Applications with tight voltage regulation requirements should evaluate forward voltage performance at the specific operating current.

Q: How do reverse leakage current differences impact substitute selection?

A: The STPS20M100SFP specifies 40 µA @ 100 V reverse leakage. Substitute parts specify 1 mA @ 100 V or 50 µA @ 100 V. The MBR20100FCT_T0_00001 (50 µA @ 100 V) provides the closest match. Higher reverse leakage in other substitutes (1 mA) is within acceptable limits for most rectifier applications but may affect performance in high-impedance circuits or low-current standby conditions. Applications sensitive to reverse leakage should prioritize MBR20100FCT_T0_00001.

Q: What is the impact of REACH status on substitute part selection?

A: The STPS20M100SFP and MBR20100FCT_T0_00001 are REACH unaffected, indicating no restricted substances requiring compliance documentation. Substitute parts from SMC Diode Solutions (MBRF20100CTL, MBRF20100CTP, SBRF20100CT) are REACH affected, requiring compliance verification and documentation for use in regulated markets. MBRF20100CT from MDD is REACH unaffected. Regulatory requirements in the end-use market determine whether REACH-affected parts are acceptable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant, matching the compliance status of the STPS20M100SFP. This ensures compatibility with RoHS-regulated applications and markets.

Q: What inventory considerations should influence substitute part selection?

A: MBR20100FCT_T0_00001 offers the highest inventory availability (20200 Pcs), followed by MBRF20100CT (55200 Pcs). Remaining substitutes offer moderate availability (1392–2839 Pcs). For high-volume production or long-term supply security, MBR20100FCT_T0_00001 or MBRF20100CT are preferred. Lower-inventory parts may be suitable for prototype or low-volume applications.

Q: Can the operating temperature range differences affect substitute selection?

A: The STPS20M100SFP specifies a maximum junction temperature of 150°C. All substitute parts support this maximum with extended lower-temperature limits (-55°C to -65°C). MBR20100FCT_T0_00001 extends the upper limit to 175°C, providing additional thermal margin. For applications operating near the 150°C limit, MBR20100FCT_T0_00001 offers superior thermal headroom.

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