STB20100 Equivalent & Substitute Parts

Part Overview

The STB20100 is an active Schottky rectifier diode manufactured by SMC Diode Solutions, designed for surface mount applications in the D2PAK package. This component operates at a maximum reverse voltage of 100 V with fast recovery characteristics suitable for high-frequency switching applications. The part is RoHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges while maintaining package compatibility and compliance certifications. The STB20100 has one qualified substitute in the current inventory.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	100	V
Voltage - Forward (Vf) (Max) @ If	750 mV @ 20 A	mV @ A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	1	mA @ 100 V
Package / Case	TO-263-3, D2PAK (2 Leads + Tab)	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the STB20100 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 100 V
Technology: Must be Schottky type
Speed: Must maintain Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case: Must be TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Compliance & Environmental Criteria:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Mounting Type: Surface Mount

The STPS8H100G-TR meets all substitution criteria through equivalent reverse voltage rating, matching Schottky technology, identical fast recovery speed specification, and identical D2PAK package configuration. Both parts maintain ROHS3 compliance and MSL 1 rating.

Parameter Comparison

Parameter	STB20100	STPS8H100G-TR	Unit
Manufacturer	SMC Diode Solutions	STMicroelectronics	—
Technology	Schottky	Schottky	—
Voltage - DC Reverse (Vr) (Max)	100	100	V
Voltage - Forward (Vf) (Max) @ If	750 mV @ 20 A	710 mV @ 8 A	mV @ A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	1	4.5	mA / µA @ 100 V
Package / Case	TO-263-3, D2PAK (2 Leads + Tab)	TO-263-3, D2PAK (2 Leads + Tab)	—
Mounting Type	Surface Mount	Surface Mount	—
Operating Temperature - Junction (Max)	150	175	°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	—
Product Status	Active	Active	—

Engineering Selection Recommendations

Both the STB20100 and STPS8H100G-TR are active products with ROHS3 compliance and unlimited moisture sensitivity rating. Selection between these parts is based on application-specific requirements and availability:

STB20100 (SMC Diode Solutions):

Primary choice when specified in original design documentation
Current inventory: 1032 pieces
Maximum junction temperature: 150°C
Forward voltage: 750 mV @ 20 A

STPS8H100G-TR (STMicroelectronics):

Qualified substitute with higher current rating (8 A average rectified current)
Current inventory: 7000 pieces
Maximum junction temperature: 175°C (higher thermal capability)
Forward voltage: 710 mV @ 8 A (lower forward drop)
Lower reverse leakage current: 4.5 µA @ 100 V

Both parts share identical reverse voltage rating, package configuration, fast recovery speed specification, and compliance certifications. The STPS8H100G-TR offers enhanced thermal performance and lower reverse leakage characteristics within the same D2PAK footprint.

Frequently Asked Questions (FAQ)

Q: Can STPS8H100G-TR be used as a direct replacement for STB20100?

A: Yes. Both parts are Schottky diodes with 100 V reverse voltage rating in identical TO-263-3 D2PAK packages. Electrical specifications for reverse voltage, fast recovery speed, and package configuration are equivalent. Both maintain ROHS3 compliance and MSL 1 rating.

Q: What are the differences between these two parts?

A: The primary differences are manufacturer (SMC Diode Solutions vs. STMicroelectronics), current rating (20 A vs. 8 A forward voltage measurement point), maximum junction temperature (150°C vs. 175°C), and reverse leakage current (1 mA vs. 4.5 µA @ 100 V). The STPS8H100G-TR provides lower forward voltage drop and higher thermal capability.

Q: Are the packages physically identical?

A: Yes. Both parts use the TO-263-3 D2PAK (2 Leads + Tab) package configuration, ensuring identical PCB footprint and mounting compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the STB20100 and STPS8H100G-TR are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. The STPS8H100G-TR offers higher thermal capability (175°C junction temperature) and lower reverse leakage current. The STB20100 is the original specified part. Both are active products with adequate inventory.

Q: What is the significance of the fast recovery speed specification?

A: The Fast Recovery ≤ 500ns, > 200mA (Io) specification indicates both parts are suitable for high-frequency switching applications. This parameter is identical between the two diodes.

Q: Can these parts be used interchangeably in existing assemblies?

A: Yes, provided the application does not require the specific forward voltage or current characteristics of the original STB20100. The identical package and electrical ratings for reverse voltage and recovery speed ensure mechanical and electrical compatibility.

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