VS-1N1189 Equivalent & Substitute Parts Reference

Part Overview

The VS-1N1189 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates at 500 V DC reverse voltage with 35 A average rectified current in a DO-203AB (DO-5) chassis stud mount package. The part is currently Active in product status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical parameters are required for circuit design flexibility, inventory management, or application-specific performance needs.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	500	V
Current - Average Rectified (Io)	35	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 110	V @ A
Current - Reverse Leakage @ Vr	10	mA @ 500 V
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Mounting Type	Chassis, Stud Mount	—
Package / Case	DO-203AB, DO-5, Stud	—
Operating Temperature - Junction	-65 to 190	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the VS-1N1189 are identified based on the following electrical and mechanical compatibility criteria:

Mandatory Compatibility Parameters:

Package / Case: DO-203AB (DO-5) stud mount configuration
Mounting Type: Chassis, Stud Mount
Operating Temperature Range: -65°C to 190°C junction temperature
Technology: Standard recovery rectifier diode
RoHS Compliance: ROHS3 Compliant

Allowable Parameter Variations: Substitute parts may exceed the main part specifications in voltage rating (Vr) and current rating (Io) while maintaining the same package and mounting configuration. Forward voltage (Vf) and reverse leakage current may vary within the standard performance envelope for the technology class. Parts with higher voltage and current ratings are electrically compatible in applications designed for the VS-1N1189 specifications.

Parameter Comparison

Parameter	VS-1N1189	VS-40HF80	Unit
Voltage - DC Reverse (Vr) (Max)	500	800	V
Current - Average Rectified (Io)	35	40	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 110	1.3 @ 125	V @ A
Current - Reverse Leakage @ Vr	10 @ 500 V	9 @ 800 V	mA @ V
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	—
Mounting Type	Chassis, Stud Mount	Chassis, Stud Mount	—
Package / Case	DO-203AB, DO-5, Stud	DO-203AB, DO-5, Stud	—
Operating Temperature - Junction	-65 to 190	-65 to 190	°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Product Status	Active	Active	—

Engineering Selection Recommendations

VS-1N1189 Selection Criteria: The VS-1N1189 is appropriate for applications requiring 500 V reverse voltage blocking with 35 A average rectified current. This part is Active in product status with full ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The component is suitable for standard recovery rectification in industrial and power conversion applications within the specified voltage and current envelope.

VS-40HF80 Selection Criteria: The VS-40HF80 is a higher-rated alternative with 800 V reverse voltage and 40 A average rectified current. This substitute maintains identical package configuration (DO-203AB stud mount), operating temperature range (-65°C to 190°C), and compliance certifications (ROHS3). The VS-40HF80 is Active in product status. Selection of this substitute is appropriate when circuit design requires higher voltage margin or increased current capacity while maintaining mechanical and thermal compatibility with the original specification.

Compliance and Certification: Both parts are ROHS3 Compliant, REACH Unaffected, and classified under ECCN EAR99. Both carry HTSUS code 8541.10.0080. Moisture sensitivity level is 1 (Unlimited) for both components, indicating no special moisture handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can VS-40HF80 be used as a direct replacement for VS-1N1189?

A: Yes. The VS-40HF80 maintains identical package configuration (DO-203AB stud mount), mounting type (chassis stud mount), and operating temperature range (-65°C to 190°C). The higher voltage rating (800 V vs. 500 V) and current rating (40 A vs. 35 A) are compatible with applications designed for the VS-1N1189 specifications.

Q: What are the key differences between these parts?

A: The VS-40HF80 provides higher reverse voltage blocking capability (800 V vs. 500 V) and increased average rectified current (40 A vs. 35 A). Forward voltage is lower on the VS-40HF80 (1.3 V @ 125 A vs. 1.7 V @ 110 A), resulting in reduced power dissipation. Reverse leakage current is comparable (9 mA @ 800 V vs. 10 mA @ 500 V).

Q: Are the packages mechanically identical?

A: Yes. Both parts use DO-203AB (DO-5) stud mount package configuration. Mechanical compatibility is confirmed for chassis and stud mount applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both VS-1N1189 and VS-40HF80 are ROHS3 Compliant, REACH Unaffected, and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. Moisture sensitivity level is 1 (Unlimited) for both components.

Q: What is the recovery speed classification for these diodes?

A: Both parts are classified as Standard Recovery with recovery time >500 ns at >200 mA (Io). This specification applies to both the VS-1N1189 and VS-40HF80.

Q: Are there any thermal considerations when substituting these parts?

A: Both parts operate across the same junction temperature range (-65°C to 190°C). The VS-40HF80 exhibits lower forward voltage (1.3 V vs. 1.7 V), which may result in reduced thermal dissipation in high-current applications. Thermal design should account for the specific application current levels and heat sink configuration.

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