STPS20SM60D Equivalent & Substitute Parts

Part Overview

The STPS20SM60D is a Schottky rectifier diode rated for 60 V DC reverse voltage and 20 A average rectified current in a Through Hole TO-220AC package. This component is classified as Obsolete, necessitating identification of active equivalent parts for continued system design and procurement. The part is RoHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), making it suitable for standard industrial and commercial applications without special handling requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	20	A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 20 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	85	µA @ 60 V
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-2	—
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the STPS20SM60D is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage Rating: 60 V DC reverse voltage (Vr) maximum
Current Rating: 20 A average rectified current (Io)
Package Type: TO-220-2 (TO-220AC supplier designation)
Mounting Configuration: Through Hole
Technology: Schottky rectifier diode
Compliance: RoHS3 compliant status
Temperature Rating: 150°C maximum junction temperature

Substitute parts must maintain identical or superior electrical performance within these defined parameters. Forward voltage characteristics and reverse leakage current are secondary selection criteria when primary ratings are matched.

Parameter Comparison

Parameter	STPS20SM60D (Main Part)	STPS20M60D (Substitute)	Match Status
Manufacturer	STMicroelectronics	STMicroelectronics	Identical
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	Identical
Current - Average Rectified (Io)	20 A	20 A	Identical
Voltage - Forward (Vf) (Max) @ If	630 mV @ 20 A	580 mV @ 20 A	Substitute Superior
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Identical
Current - Reverse Leakage @ Vr	85 µA @ 60 V	125 µA @ 60 V	Main Part Superior
Operating Temperature - Junction (Max)	150°C	150°C	Identical
Mounting Type	Through Hole	Through Hole	Identical
Package / Case	TO-220-2	TO-220-2	Identical
Technology	Schottky	Schottky	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Product Status	Obsolete	Active	Substitute Active

Engineering Selection Recommendations

The STPS20M60D is the direct equivalent substitute for the obsolete STPS20SM60D. Both parts are manufactured by STMicroelectronics and share identical electrical ratings, package configuration, and compliance certifications.

Selection Basis:

Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current procurement requirements.
Product Status: The STPS20M60D carries Active product status, providing long-term availability and supply chain continuity compared to the Obsolete STPS20SM60D.
Electrical Equivalence: Voltage and current ratings are identical across both parts. The STPS20M60D demonstrates improved forward voltage performance (580 mV versus 630 mV at 20 A), resulting in lower power dissipation and improved thermal efficiency.
Package Compatibility: Both parts utilize identical TO-220-2 Through Hole packaging, enabling direct mechanical and electrical substitution without circuit board redesign.

The STPS20M60D is the recommended replacement for new designs and ongoing procurement of applications currently using the STPS20SM60D.

Frequently Asked Questions (FAQ)

Q: Can the STPS20M60D be used as a direct replacement for the STPS20SM60D in existing designs?

A: Yes. Both parts share identical voltage ratings (60 V), current ratings (20 A), package type (TO-220-2), and mounting configuration (Through Hole). No circuit modifications are required for substitution.

Q: What is the primary difference between these two parts?

A: The STPS20M60D features improved forward voltage characteristics (580 mV versus 630 mV at 20 A), resulting in lower power dissipation. The STPS20SM60D exhibits lower reverse leakage current (85 µA versus 125 µA at 60 V). Both differences are within normal manufacturing variation for Schottky diodes and do not affect functional compatibility.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity level (MSL 1). Regulatory and environmental requirements are equivalent.

Q: Why is the STPS20SM60D classified as Obsolete?

A: Product obsolescence is determined by manufacturer lifecycle decisions. The STPS20M60D represents the current active equivalent in the STMicroelectronics product line for this voltage and current rating combination.

Q: Can these parts be used interchangeably in thermal management applications?

A: The improved forward voltage of the STPS20M60D (580 mV) results in lower junction heating compared to the STPS20SM60D (630 mV) at identical 20 A current levels. Both parts operate at the same maximum junction temperature (150°C). Thermal design calculations should account for the lower power dissipation of the STPS20M60D.

Q: Are there any package or pinout differences?

A: No. Both parts use identical TO-220-2 package configuration with Through Hole mounting. Pinout and mechanical dimensions are equivalent, enabling direct board-level substitution.

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