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Taiwan Semiconductor Corporation RS3KH
- Part No.:
- RS3KH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
RS3KH.pdf
- Description:
- DIODE GEN PURP 800V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
RS3KH from Taiwan Semiconductor is a 3A, 800V fast recovery surface-mount rectifier in DO-214AB (SMC) package, featuring 500 ns reverse recovery time, 100 A peak surge current, and AEC-Q101 qualification for automotive-grade reliability. It serves as a primary or snubber rectifier in high-efficiency DC/DC converters and automotive lighting systems.
For engineers reviewing the RS3KH datasheet, RS3KH pinout, RS3KH application, or RS3KH equivalent, key selection criteria include its 800 V repetitive peak reverse voltage, 1.3 V max forward voltage at 3 A, 250 µA max reverse leakage at 125°C, AEC-Q101 qualification, and DO-214AB thermal performance (RθJL = 15°C/W).
Technical Context
The RS3KH employs a glass-passivated single-die silicon junction optimized for fast switching and high surge robustness. Its 500 ns reverse recovery time enables efficient operation in high-frequency switching topologies up to several hundred kHz, while maintaining low conduction loss under continuous 3 A forward current.
Designed for automotive environments, it supports junction temperatures from –55°C to +175°C and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity. The cathode-band polarity marking and matte tin-plated leads ensure compatibility with automated SMT assembly and lead-free reflow profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Withstands repetitive reverse voltage up to 800 V without breakdown, suitable for 400 V DC bus applications with safety margin. |
| IF | 3 A continuous - Rated average forward current at case temperature ≤ 75°C, enabling compact heatsink-less designs in low-power converters. |
| IFSM | 100 A (8.3 ms half-sine) - Handles transient surges common in automotive load-dump or inductive turn-off events without failure. |
| trr | 500 ns - Fast recovery minimizes switching losses and EMI in high-frequency flyback or active clamp circuits. |
| TJ max | +175°C - Enables operation in under-hood automotive environments and high-ambient industrial settings. |
| RθJL | 15°C/W - Low junction-to-lead thermal resistance allows direct PCB copper pour cooling without external heatsinks. |
| VF max | 1.3 V @ 3 A, 25°C - Limits conduction loss to < 3.9 W at full rated current, improving system efficiency. |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded plastic body per JEDEC DO-214AB, 7.75 mm × 6.25 mm footprint, 2.45 mm height, cathode indicated by band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit (e.g., transformer secondary center-tap or switch node return path). |
| Cathode | Forward current exit point | Connected to output rail or filter capacitor positive; marked by visible band for unambiguous orientation during placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD, enabling use in ASIL-B systems. |
| Glass passivated junction | Provides stable leakage current and long-term reliability under humidity and thermal cycling, critical for automotive under-hood deployment. |
| Fast recovery (500 ns) | Reduces reverse recovery charge (Qrr) and associated switching losses compared to standard rectifiers, improving converter efficiency above 100 kHz. |
| Moisture sensitivity level 1 | Allows indefinite floor life before reflow; no baking required prior to assembly, reducing manufacturing cost and process complexity. |
| Halogen-free & RoHS compliant | Meets global environmental compliance mandates and supports green manufacturing without compromising electrical or thermal performance. |
Applications
| Automotive LED Headlamp Driver | Industrial DC/DC Converter Output Rectification |
|---|---|
Use Scenario: High-brightness LED arrays powered by isolated flyback or forward converters in vehicle headlamps. IC Role / Device Role / Timing Role: Output rectifier converting transformer secondary AC to regulated DC, handling 3 A continuous load with transient surges. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime; 175°C max junction temperature accommodates sealed housing thermal buildup. | Use Scenario: Secondary-side rectification in 24 V input, 5–12 V output industrial DC/DC modules operating at 250 kHz. IC Role / Device Role / Timing Role: Fast-recovery power diode minimizing switching loss and EMI generation during high-frequency PWM cycles. Use Value: 500 ns trr reduces reverse recovery energy dissipation, enabling >92% efficiency at full load without snubber networks. |
| Automotive HVAC Blower Power Stage | Snubber Network in Motor Drive Inverters |
Use Scenario: Brushed DC motor control in climate control systems, where PWM-driven H-bridge includes freewheeling paths. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current recirculation during MOSFET off-time in bidirectional drive. Use Value: 100 A IFSM withstands motor stall currents; glass passivation prevents parameter drift under vibration and thermal shock. | Use Scenario: RCD snubber across IGBTs or MOSFETs in 3-phase inverter drives for pumps or compressors. IC Role / Device Role / Timing Role: Snubber diode clamping voltage spikes during device turn-off, absorbing inductive energy. Use Value: 800 V VRRM provides margin against 600 V DC bus transients; fast recovery avoids snap-off oscillation and secondary breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-3EYH08-M3 | Same DO-214AB package, 800 V VRRM, but 350 ns trr; VF = 1.25 V typ @ 3 A. | Lower trr improves high-frequency efficiency but lacks AEC-Q101 qualification. | Preferred for non-automotive industrial SMPS where faster recovery is prioritized over automotive qualification. |
| ON Semiconductor MUR380E | DO-214AC (SMA) package, 800 V VRRM, 500 ns trr, but only 2 A IF rating and no AEC-Q101. | Smaller footprint but derated current handling; unsuitable for sustained 3 A loads without thermal derating. | Acceptable for space-constrained, lower-duty-cycle applications where peak current remains below 2 A. |
Compared with VS-3EYH08-M3 and MUR380E, the RS3KH uniquely combines AEC-Q101 qualification, 3 A continuous rating, and 500 ns recovery in DO-214AB-making it the only drop-in solution for automotive-grade 3 A rectification requiring both reliability and thermal robustness.
Availability
RS3KH is available at Aetrix Electronics and suitable for automotive lighting, industrial DC/DC converters, and HVAC blower power stages requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for RS3KH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS diodes, and automotive-qualified components.
The RS3KH belongs to TSC's RS3xH fast recovery rectifier family, engineered specifically for high-reliability automotive and industrial power conversion where AEC-Q101 compliance, thermal resilience, and consistent surge robustness are mandatory.
FAQ
What is the maximum junction temperature rating for RS3KH?
The RS3KH has a maximum junction temperature (TJ) rating of +175°C, verified per absolute maximum ratings in the official datasheet. This allows reliable operation in under-hood automotive environments and high-ambient industrial enclosures. Derating curves confirm usable current capacity down to –55°C ambient, and the RS3KH maintains specified electrical parameters across this full range.
Is RS3KH pin-compatible with other devices in the RS3xH series?
Yes, all RS3xH devices-including RS3AH, RS3BH, RS3DH, RS3GH, RS3JH, RS3KH, and RS3MH-share identical DO-214AB (SMC) package dimensions, pinout, and thermal pad layout. The only differences are VRRM ratings (50 V to 1000 V) and corresponding reverse recovery times (150–500 ns), making RS3KH a direct mechanical and soldering replacement within the same voltage class group.
Does RS3KH require pre-baking before reflow soldering?
No, RS3KH has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH without baking. No floor-life limitations or preconditioning steps are required prior to standard lead-free reflow profiles, simplifying SMT line integration and reducing manufacturing overhead.
What is the reverse recovery time (trr) of RS3KH and how is it measured?
The RS3KH reverse recovery time is 500 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the official TSC datasheet. This value reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss and EMI in high-frequency converters. The test circuit and waveform definitions are documented in Figure 6 of the RS3AH–RS3MH datasheet revision B2304.
Can RS3KH be used in place of RS3JH in an existing design?
Yes, RS3KH can replace RS3JH in most designs because both share identical package, pinout, forward current (3 A), surge rating (100 A), and thermal characteristics. The key difference is VRRM: RS3JH is rated for 600 V, while RS3KH is rated for 800 V. Using RS3KH provides increased voltage margin and improved robustness against transients, with no layout or thermal changes required.
RS3KH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 800 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS3KH FAQ
1.How can I place an order for RS3KH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS3KH on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for RS3KH reliable?
The price and inventory of RS3KH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3KH is usually 5 days.
3.What payment methods are accepted for RS3KH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3KH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS3KH?
RS3KH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS3KH order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for RS3KH?
For technical support, including RS3KH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3KH requirements.
6.How does Aetrix verify that RS3KH is sourced from the original manufacturer or authorized distributors?
All RS3KH products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that RS3KH meets industry standards.
7.What is the process for return or replacement of RS3KH?
All RS3KH units undergo pre-shipment inspection (PSI). If there is an issue with RS3KH, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The RS3KH part is unused and in its original packaging.
Return procedure for RS3KH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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