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Taiwan Semiconductor Corporation RS1KH
- Part No.:
- RS1KH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
RS1KH.pdf
- Description:
- DIODE GEN PURP 800V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
RS1KH from Taiwan Semiconductor is a 1A, 800V fast recovery surface-mount rectifier diode in DO-214AC (SMA) package, featuring 500 ns reverse recovery time, 1.3 V max forward voltage at 1 A, and 5 µA max reverse leakage at 25°C - used in automotive snubber circuits and DC-DC converters requiring high-voltage transient suppression.
For engineers reviewing the RS1KH datasheet, RS1KH pinout, RS1KH application, or RS1KH equivalent, key selection criteria include peak reverse voltage (800 V), thermal resistance (RθJA = 105 °C/W), junction temperature range (–55 to +175 °C), and AEC-Q101 qualification for automotive reliability validation.
Technical Context
The RS1KH operates as a single-die, unidirectional fast recovery rectifier with glass-passivated junction for enhanced moisture resistance and long-term stability under thermal cycling. Its 500 ns trr enables efficient switching in high-frequency flyback and snubber topologies where diode recovery losses must be minimized.
Designed for automated SMT placement, it meets J-STD-002 solderability and JESD201 Class 2 whisker resistance standards. The DO-214AC (SMA) package supports 30 A non-repetitive surge current (8.3 ms half-sine) and maintains rated performance up to 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - maximum repetitive reverse voltage; defines safe blocking capability in 400–600 V DC bus applications |
| IF | 1 A continuous - average forward current rating at TA = 75 °C with PCB pad area per JEDEC standard |
| trr | 500 ns - measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; critical for minimizing switching loss in 100–500 kHz converters |
| VF (max) | 1.3 V @ 1 A, 25 °C - directly impacts conduction loss and thermal rise in high-duty-cycle rectification |
| RθJA | 105 °C/W - junction-to-ambient thermal resistance on standard FR-4 with 1-inch² copper pad; determines heatsinking requirement |
| IFSM | 30 A - peak surge current handling for line transients or startup inrush without failure |
| Junction temp | –55 to +175 °C - extended operating range enables under-hood automotive use without derating |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode indicated by molded band; two-terminal device (anode and cathode) with matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; must withstand full surge current and thermal stress during conduction |
| Cathode | Forward current exit / reverse voltage blocking terminal | Marked by band; carries full reverse voltage during off-state and defines polarity-sensitive PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Prevents moisture ingress and metallization corrosion, extending lifetime in humid or under-hood environments |
| Fast recovery (500 ns) | Reduces reverse recovery charge (Qrr) and associated switching losses in high-frequency power supplies |
| Moisture sensitivity level 1 | No dry-pack or baking required before reflow; compatible with standard SMT assembly lines |
| Halogen-free & RoHS compliant | Meets EU environmental directives and automotive material compliance requirements (e.g., ELV, IMDS) |
Applications
| Automotive LED Headlamp Driver | Industrial DC-DC Snubber Circuit |
|---|---|
Use Scenario: High-side switch snubbing in 12 V/24 V automotive LED driver modules with PWM dimming. IC Role / Device Role / Timing Role: Fast recovery rectifier absorbing inductive kickback from MOSFET switching node. Use Value: 800 V VRRM and 500 ns trr prevent voltage overshoot beyond MOSFET breakdown while minimizing energy dissipation in snubber resistor. | Use Scenario: Clamp diode in flyback converter output rectification stage operating at 250 kHz. IC Role / Device Role / Timing Role: Unidirectional current path with low forward drop and controlled recovery to reduce EMI and improve efficiency. Use Value: 1.3 V VF max and RθJA = 105 °C/W enable stable operation at 1 A load without forced air cooling. |
| On-Board Charger (OBC) Auxiliary Supply | Commercial HVAC Control Board Power Input |
Use Scenario: Input rectification for auxiliary 12 V supply in EV on-board chargers exposed to battery voltage transients. IC Role / Device Role / Timing Role: Primary AC/DC rectifier handling 400 V DC link surges and cold-crank conditions. Use Value: AEC-Q101 qualification and 30 A IFSM ensure robustness against ISO 7637-2 pulse 5a/b transients without derating. | Use Scenario: Input-stage rectifier in 24 VAC-to-DC control power supply for HVAC zone controllers. IC Role / Device Role / Timing Role: General-purpose bridge input diode replacing slower 1N4007 equivalents in space-constrained designs. Use Value: DO-214AC footprint reduces board area vs. axial DO-41; 175 °C TJMAX supports sealed enclosure operation up to 85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08 | Same 1 A / 800 V rating; trr = 150 ns (faster), but RθJA = 120 °C/W (worse thermal performance) | Better for ultra-high-frequency SMPS; less suitable for thermally constrained automotive modules | Choose STTH1R08 only if trr < 200 ns is mandatory and thermal margin allows higher RθJA |
| ON Semi MUR108 | 1 A / 800 V; trr = 75 ns, VF = 1.7 V (higher conduction loss), AEC-Q101 not claimed | Preferred in cost-sensitive industrial supplies; not qualified for automotive use | Select MUR108 for non-automotive applications where lowest trr outweighs VF penalty and qualification needs |
Compared with STTH1R08 and MUR108, the RS1KH uniquely balances AEC-Q101 compliance, 500 ns trr, and 105 °C/W thermal resistance - making it optimal for automotive power modules where reliability, thermal headroom, and moderate switching speed are jointly prioritized.
Availability
RS1KH is available at Aetrix Electronics and suitable for automotive lighting systems, industrial DC-DC converters, and HVAC control boards requiring stable component supply with automotive-grade traceability and long-lifecycle support.
Supply support for RS1KH 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 MOSFETs for industrial and automotive markets.
The RS1KH belongs to TSC's RS1xH fast recovery rectifier family, engineered specifically for AEC-Q101-compliant automotive power conversion and high-reliability industrial snubbing applications.
FAQ
What is the maximum junction temperature rating for RS1KH?
The RS1KH has a maximum junction temperature (TJMAX) of +175 °C, verified per absolute maximum ratings table in the official datasheet. This rating allows sustained operation in under-hood automotive environments and sealed industrial enclosures. Derating begins above 75 °C ambient, and the device maintains full 1 A current capability up to 125 °C case temperature when mounted on recommended PCB copper area. RS1KH's thermal design must account for RθJA = 105 °C/W to avoid exceeding this limit.
Is RS1KH pin-compatible with other devices in the RS1xH series?
Yes, all RS1xH series devices - including RS1AH through RS1MH - share identical DO-214AC (SMA) package dimensions, pinout, and thermal pad layout. The RS1KH uses the same anode/cathode terminal configuration and marking orientation as RS1JH and RS1MH. This enables direct substitution within the same voltage grade group (e.g., 600–1000 V variants) without PCB redesign, provided voltage and recovery time requirements align.
Does RS1KH meet automotive qualification standards?
Yes, RS1KH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This includes passing stress tests for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD). The qualification applies to the full RS1xH family, and RS1KH's lot traceability, burn-in, and wafer-level screening follow automotive-grade protocols - confirming suitability for safety-critical vehicle subsystems like lighting and body control modules.
What is the reverse recovery time (trr) specification for RS1KH?
The RS1KH has a maximum reverse recovery time (trr) of 500 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is confirmed in the Electrical Specifications table of the official datasheet and distinguishes RS1KH from lower-voltage variants (e.g., RS1JH at 250 ns). The 500 ns trr balances switching speed and softness for reduced EMI in automotive snubber applications.
Can RS1KH replace a 1N4007 in high-frequency designs?
No - RS1KH is not a direct replacement for 1N4007 in high-frequency designs due to fundamental differences in recovery behavior. While both are 1 A rectifiers, the 1N4007 is a general-purpose slow recovery diode (trr > 2 µs), whereas RS1KH is a fast recovery device (trr = 500 ns). Substituting RS1KH for 1N4007 in legacy 50/60 Hz transformer supplies offers no benefit and may increase cost unnecessarily; however, RS1KH is the correct upgrade for any design moving to >20 kHz switching where 1N4007 would overheat or fail.
RS1KH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1KH FAQ
1.How can I place an order for RS1KH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1KH 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 RS1KH reliable?
The price and inventory of RS1KH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1KH is usually 5 days.
3.What payment methods are accepted for RS1KH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1KH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1KH?
RS1KH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1KH 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 RS1KH?
For technical support, including RS1KH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1KH requirements.
6.How does Aetrix verify that RS1KH is sourced from the original manufacturer or authorized distributors?
All RS1KH 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 RS1KH meets industry standards.
7.What is the process for return or replacement of RS1KH?
All RS1KH units undergo pre-shipment inspection (PSI). If there is an issue with RS1KH, 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 RS1KH part is unused and in its original packaging.
Return procedure for RS1KH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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