8TQ100STRR Schottky Diode Equivalent & Substitute Parts

Part Overview

The 8TQ100STRR is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 100 V DC reverse voltage and 8 A average rectified current in a surface mount TO-263AB (D2PAK) package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with modified parameters suitable for the same application circuit topology.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	8	A
Voltage - Forward (Vf) (Max) @ If	720 mV @ 8 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	550 µA @ 100 V	µA
Technology	Schottky	—
Mounting Type	Surface Mount	—
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	—
Operating Temperature - Junction	-55 to 175	°C

Substitute Part Grouping Explanation

Substitution of the 8TQ100STRR is determined by the following critical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 8 A minimum
Technology: Schottky
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction: -55°C to 175°C minimum

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB or compatible variant

Compliance Criteria:

RoHS Status: ROHS3 Compliant preferred for new designs
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories: parametric equivalents (identical electrical ratings from Vishay) and manufacturer-recommended alternatives (functionally compatible from other manufacturers with modified current or leakage specifications).

Parameter Comparison

Parameter	8TQ100STRR	VS-8TQ100S-M3	VS-8TQ100SHM3	VS-8TQ100STRL-M3	STPS8H100G-TR	DSS16-01AS-TRL
Manufacturer	Vishay	Vishay	Vishay	Vishay	STMicroelectronics	IXYS
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)	8 A	8 A	8 A	8 A	8 A	16 A
Voltage - Forward (Vf) (Max) @ If	720 mV @ 8 A	720 mV @ 8 A	720 mV @ 8 A	720 mV @ 8 A	710 mV @ 8 A	790 mV @ 15 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	550 µA @ 100 V	550 µA @ 80 V	550 µA @ 80 V	550 µA @ 80 V	4.5 µA @ 100 V	500 µA @ 100 V
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Operating Temperature - Junction	-55 to 175 °C	-55 to 175 °C	-55 to 175 °C	-55 to 175 °C	Max 175 °C	-55 to 175 °C
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	—	Tube	Tube	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
Automotive Grade	—	—	Yes (AEC-Q101)	—	—	—

Engineering Selection Recommendations

Parametric Equivalents (Preferred for Direct Replacement):

The Vishay parts VS-8TQ100S-M3, VS-8TQ100SHM3, and VS-8TQ100STRL-M3 are parametric equivalents to the 8TQ100STRR, maintaining identical electrical specifications (100 V, 8 A, 720 mV forward voltage). All three are active products with ROHS3 compliance, addressing the obsolescence of the original part. Selection among these three depends on packaging requirements:

VS-8TQ100S-M3 (Tube packaging): Standard production packaging for moderate-volume applications
VS-8TQ100SHM3 (Tube packaging, AEC-Q101): Automotive-grade qualification for automotive and harsh-environment applications
VS-8TQ100STRL-M3 (Tape & Reel): High-volume production and automated assembly applications

Manufacturer-Recommended Alternatives:

STPS8H100G-TR (STMicroelectronics): Maintains 100 V, 8 A ratings with superior reverse leakage performance (4.5 µA vs. 550 µA), resulting in lower power dissipation. Forward voltage is marginally lower (710 mV vs. 720 mV). Suitable for applications where leakage current minimization is critical. Cut Tape & Digi-Reel packaging supports high-volume production.
DSS16-01AS-TRL (IXYS): Provides 100 V rating with doubled current capacity (16 A vs. 8 A), enabling use in higher-current applications or providing design margin. Forward voltage is higher (790 mV @ 15 A). Reverse leakage is comparable (500 µA). Tape & Reel packaging for production environments.

All substitute parts maintain fast recovery speed (≤ 500ns), surface mount TO-263AB package compatibility, and operating temperature range of -55°C to 175°C.

Frequently Asked Questions (FAQ)

Q: Can VS-8TQ100S-M3 be used as a direct replacement for 8TQ100STRR?

A: Yes. VS-8TQ100S-M3 is a parametric equivalent with identical electrical specifications (100 V, 8 A, 720 mV forward voltage) and compatible TO-263AB package. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant). Packaging is Tube instead of the original specification.

Q: What is the difference between VS-8TQ100SHM3 and VS-8TQ100S-M3?

A: Both parts are parametric equivalents with identical electrical ratings. VS-8TQ100SHM3 carries AEC-Q101 automotive qualification and is designated as automotive-grade, making it suitable for automotive and mission-critical applications requiring enhanced reliability screening. VS-8TQ100S-M3 is the standard industrial-grade equivalent.

Q: Why does STPS8H100G-TR have lower reverse leakage (4.5 µA vs. 550 µA)?

A: STPS8H100G-TR is manufactured by STMicroelectronics using different process technology and die design compared to the Vishay parts. Lower reverse leakage reduces thermal dissipation and improves efficiency in applications sensitive to standby power consumption. This is a material difference in device characteristics, not a deficiency in the original part.

Q: Can DSS16-01AS-TRL be used in place of 8TQ100STRR?

A: DSS16-01AS-TRL is functionally compatible but not a direct equivalent. It maintains the 100 V rating and fast recovery speed but provides 16 A current capacity (vs. 8 A) and higher forward voltage (790 mV @ 15 A vs. 720 mV @ 8 A). Use DSS16-01AS-TRL when higher current capacity is required or when design margin is needed. Verify that the higher forward voltage does not impact circuit performance.

Q: Are all substitute parts in the same package?

A: All substitute parts use TO-263-3, D2PAK (2 Leads + Tab) package variants compatible with TO-263AB footprints. Mechanical pinout and PCB land patterns are identical. Packaging format (Tube, Tape & Reel, Cut Tape) differs for supply chain and assembly automation purposes but does not affect electrical or mechanical compatibility.

Q: What is the significance of RoHS3 compliance?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. The original 8TQ100STRR is RoHS non-compliant. All active substitute parts are ROHS3 compliant, meeting regulatory requirements for new product designs and markets with environmental restrictions.

Q: Can packaging type (Tube vs. Tape & Reel) affect electrical performance?

A: No. Packaging type affects supply chain logistics, automated assembly compatibility, and storage handling but does not alter electrical specifications or performance. Selection should be based on production volume, assembly equipment capability, and inventory management requirements.

Q: What is MSL (Moisture Sensitivity Level) and why is it relevant?

A: MSL indicates the component's sensitivity to moisture absorption during storage and handling. All listed parts have MSL 1 (Unlimited), meaning they can be stored indefinitely without moisture-related degradation, simplifying inventory management and reducing risk of solder joint defects during reflow assembly.

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