Vishay General Semiconductor - Diodes Division RS3KHE3_A/H

Overview

RS3KHE3_A/H from Vishay General Semiconductor is a surface-mount fast switching rectifier diode with 800 V maximum repetitive peak reverse voltage, 3.0 A average forward current, and 150 ns reverse recovery time, designed for high-efficiency power supply rectification in automotive and industrial converters.

For engineers reviewing the RS3KHE3_A/H datasheet, RS3KHE3_A/H pinout, RS3KHE3_A/H application, or RS3KHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, SMC (DO-214AB) package, 1.3 V forward voltage at 2.5 A, 100 A surge capability, and suitability for freewheeling and flyback topologies requiring fast recovery and high thermal reliability.

Technical Context

This device is a single silicon PN junction diode optimized for fast switching in DC/DC and AC/DC power conversion stages. Its 150 ns reverse recovery time and low 1.3 V forward voltage at 2.5 A support high-frequency operation with reduced switching losses and conduction losses.

The RS3KHE3_A/H features glass passivated chip construction, matte tin-plated leads compliant with J-STD-002, and meets MSL level 1 per J-STD-020 with 260 °C peak reflow tolerance. It operates across –55 °C to +150 °C junction temperature range and is qualified to AEC-Q101 for automotive use.

Key Specifications

Pinout & Package

Package: SMC (DO-214AB), surface-mount, low-profile case with cathode band marking. Molded compound meets UL 94 V-0; terminals are matte tin-plated and solderable per J-STD-002.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast switching rectifier applications.

Compared with STTH3R08S and ES3J-M3/86A, RS3KHE3_A/H uniquely combines AEC-Q101 qualification, 150 ns recovery, and SMC packaging-making it the preferred choice for automotive-grade 800 V rectification where reliability validation and thermal robustness are mandatory.

Availability

RS3KHE3_A/H is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS outputs, LED driver freewheeling, and UPS inverter stages requiring stable component supply and long-term lifecycle assurance.

Supply support for RS3KHE3_A/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and automotive-grade performance.

The RS3x series is designed specifically for high-reliability fast switching rectification in power conversion systems where low V_F, fast t_rr, and AEC-Q101 qualification are critical-targeting automotive, industrial, and telecom infrastructure applications.

FAQ

What is the maximum junction temperature rating for RS3KHE3_A/H?

The RS3KHE3_A/H has a maximum junction temperature (T_J) of +150 °C, verified per Vishay's thermal characterization data. This rating allows sustained operation in high-ambient environments such as engine compartments or sealed industrial enclosures. Derating curves confirm 3.0 A I_F(AV) is maintained up to 75 °C lead temperature, and thermal resistance values (R_θJA = 50 °C/W, R_θJL = 15 °C/W) support accurate thermal design using standard PCB copper pad layouts. RS3KHE3_A/H must be operated within this limit to ensure long-term reliability.

Is RS3KHE3_A/H qualified to AEC-Q101?

Yes, RS3KHE3_A/H is explicitly AEC-Q101 qualified, as confirmed in the Vishay document 88709 revision 25-Feb-2020. The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified versions, and the ordering code RS3KHE3_A/H includes the automotive-grade qualification. This qualification covers temperature cycling, humidity bias, mechanical shock, and ESD testing per AEC-Q101 Rev D, making RS3KHE3_A/H suitable for automotive powertrain and body electronics applications.

What does the "_A/H" suffix mean in RS3KHE3_A/H?

The "_A/H" suffix in RS3KHE3_A/H indicates two distinct identifiers: "A" is the revision code per Vishay's documentation (e.g., Document Number 88709, Revision: 25-Feb-2020), and "H" denotes the preferred package code for 7-inch diameter plastic tape and reel, with a base quantity of 850 units. This format aligns with Vishay's ordering information table and ensures correct material handling and automated placement compatibility. RS3KHE3_A/H is not a variant with altered electrical specs-it retains all rated parameters of the RS3K family.

What is the reverse recovery time (t_rr) of RS3KHE3_A/H and how is it measured?

The RS3KHE3_A/H has a maximum reverse recovery time (t_rr) of 150 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, as specified in the Electrical Characteristics table of Vishay document 88709. This value reflects the time required for minority carriers to clear after forward conduction ceases, directly impacting switching loss in high-frequency converters. The 150 ns t_rr is consistent across the RS3K grade and distinguishes it from slower variants like RS3J (250 ns) and RS3G (500 ns).

Does RS3KHE3_A/H have a halogen-free option?

No, RS3KHE3_A/H is RoHS-compliant and AEC-Q101 qualified but not halogen-free. Vishay designates halogen-free versions with the "HM3" suffix (e.g., RS3KHM3_A/H). The "HE3" suffix used in RS3KHE3_A/H specifies RoHS compliance and AEC-Q101 qualification only; halogen content is not restricted in this variant. For applications requiring halogen-free materials (e.g., certain EU industrial or aerospace standards), RS3KHM3_A/H must be selected instead.