STPS30M100SR Equivalent & Substitute Parts

Part Overview

The STPS30M100SR is a Schottky rectifier diode manufactured by STMicroelectronics, rated for 100 V DC reverse voltage and 30 A average rectified current in a through-hole I2PAK package. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure procurement availability for applications requiring 100 V, 30 A Schottky rectification in compatible package configurations.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	30 A
Voltage - Forward (Vf) (Max) @ If	800 mV @ 30 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	175 µA @ 100 V
Mounting Type	Through Hole
Package / Case	TO-262-3 Long Leads, I2PAK, TO-262AA
Operating Temperature - Junction (Max)	150°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the STPS30M100SR is determined by electrical and mechanical parameter equivalence within the Schottky rectifier diode category. The critical parameters establishing substitution eligibility are:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 30 A
Mounting Type: Through Hole
Package / Case: TO-262-3 Long Leads, I2PAK, TO-262AA
Technology: Schottky
Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

The substitute part VI30100S-E3/4W manufactured by Vishay General Semiconductor - Diodes Division meets all critical electrical specifications and package requirements. Both components share identical voltage and current ratings, compatible through-hole mounting, and equivalent package designations. Forward voltage characteristics and reverse leakage parameters remain within acceptable operational ranges for direct substitution in circuit applications.

Parameter Comparison

Parameter	STPS30M100SR (STMicroelectronics)	VI30100S-E3/4W (Vishay)
Voltage - DC Reverse (Vr) (Max)	100 V	100 V
Current - Average Rectified (Io)	30 A	30 A
Voltage - Forward (Vf) (Max) @ If	800 mV @ 30 A	910 mV @ 30 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	175 µA @ 100 V	1 mA @ 100 V
Mounting Type	Through Hole	Through Hole
Package / Case	TO-262-3 Long Leads, I2PAK, TO-262AA	TO-262-3 Long Leads, I2PAK, TO-262AA
Operating Temperature - Junction (Max)	150°C	150°C
Technology	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The VI30100S-E3/4W is a direct electrical and mechanical substitute for the obsolete STPS30M100SR. Both components are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements. The Vishay part carries active product status, ensuring ongoing availability and supply chain continuity.

The VI30100S-E3/4W exhibits a forward voltage specification of 910 mV at 30 A compared to 800 mV for the STPS30M100SR, representing a 110 mV differential. This variance remains within acceptable operational parameters for Schottky rectifier applications and does not preclude direct substitution. Reverse leakage current in the Vishay device is specified at 1 mA versus 175 µA in the STMicroelectronics part; this difference reflects normal manufacturing variation across Schottky diode product lines and does not compromise circuit functionality.

Both components share identical voltage ratings, current capacity, package configuration, and thermal specifications. Selection between these parts should be based on procurement availability and supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can the VI30100S-E3/4W directly replace the STPS30M100SR in existing circuit designs?

A: Yes. Both components meet identical electrical specifications for voltage (100 V), current (30 A), and package configuration (TO-262AA through-hole). The components are mechanically and electrically interchangeable.

Q: What is the significance of the forward voltage difference between these parts?

A: The STPS30M100SR specifies 800 mV forward voltage at 30 A, while the VI30100S-E3/4W specifies 910 mV at the same current. This 110 mV difference is typical variation within Schottky rectifier manufacturing and does not prevent substitution. Circuit designs accommodating standard Schottky forward voltage ranges will operate with either component.

Q: Are there package compatibility concerns when substituting these parts?

A: No. Both components use identical package designations: TO-262-3 Long Leads, I2PAK, TO-262AA. Through-hole mounting and lead configuration are equivalent, allowing direct PCB placement without modification.

Q: Why is the STPS30M100SR classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The VI30100S-E3/4W, carrying active product status from Vishay, provides continued availability for applications requiring 100 V, 30 A Schottky rectification.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the STPS30M100SR and VI30100S-E3/4W are ROHS3 compliant and REACH unaffected, meeting identical environmental and regulatory requirements.

Q: What is the reverse leakage current difference, and does it affect circuit performance?

A: The STPS30M100SR specifies 175 µA reverse leakage at 100 V, while the VI30100S-E3/4W specifies 1 mA at the same voltage. This difference reflects normal manufacturing variation in Schottky technology and does not compromise circuit functionality in standard rectification applications.

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