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Taiwan Semiconductor Corporation RS1KLH
- Part No.:
- RS1KLH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
RS1KLH.pdf
- Description:
- 500NS, 0.8A, 800V, FAST RECOVERY
- Quantity:
- Payment:
- Shipping:
Inventory:6,641
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Product details
Overview
RS1KLH from Taiwan Semiconductor is a fast recovery surface mount rectifier with 800 V repetitive peak reverse voltage (VRRM), 0.8 A average forward current (IF), and 500 ns reverse recovery time (trr), designed for freewheeling and snubber circuits in automotive lighting and DC-DC converters.
For engineers reviewing the RS1KLH datasheet, RS1KLH pinout, RS1KLH application, or RS1KLH equivalent, key selection criteria include its AEC-Q101 qualification, Sub SMA package compatibility with automated placement, 150°C max junction temperature, and glass-passivated junction for reliability in harsh environments.
Technical Context
The RS1KLH is a single-die, unidirectional silicon rectifier optimized for fast switching in high-frequency power conversion. Its 500 ns trr enables reduced switching losses in flyback and boost topologies, while the glass-passivated junction ensures stable performance under thermal cycling and humidity stress.
Rated for 800 V VRRM and 30 A non-repetitive surge current (IFSM), the device operates across –55°C to +150°C junction temperature range and features matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports isolation and blocking in 48 V–400 V DC bus systems |
| IF | 0.8 A - continuous conduction capability for low-power auxiliary rails and LED drivers |
| trr | 500 ns - enables operation up to ~300 kHz in hard-switched converters without excessive loss |
| TJ max | +150 °C - allows deployment in under-hood automotive modules without derating at ambient ≤105 °C |
| RθJA | 105 °C/W - requires minimal copper area (≥25 mm²) on standard FR-4 for thermal compliance at full load |
| VR(RMS) | 560 V - defines maximum continuous AC input voltage in bridge or half-wave configurations |
| IFSM | 30 A - withstands inrush and transient surges in automotive cold-crank and load-dump conditions |
Pinout & Package
Package: Sub SMA - surface-mount plastic package with cathode band marking, UL 94V-0 rated molding compound, and 0.019 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter or ground return in snubber) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to higher-potential rail (e.g., output capacitor positive or supply rail) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47 |
| Glass passivated junction | Eliminates moisture-induced leakage drift and improves long-term stability in humid environments |
| Moisture sensitivity level 1 | No bake required before reflow; compatible with standard SMT assembly lines without dry-pack handling |
| Fast switching (500 ns trr) | Reduces reverse recovery charge (Qrr) to <15 nC, minimizing EMI and diode-induced voltage spikes |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting RoHS-compliant and environmentally regulated end equipment |
Applications
| Automotive LED Headlamp Driver | Industrial DC-DC Auxiliary Supply |
|---|---|
Use Scenario: High-side switch freewheeling path in constant-current LED driver with PWM dimming. IC Role / Device Role / Timing Role: Freewheeling rectifier providing low-loss current recirculation during MOSFET off-time. Use Value: 500 ns trr minimizes voltage overshoot across the switch, reducing need for snubber components and improving system efficiency by ~1.2% at 250 kHz. | Use Scenario: Output rectification in isolated 24 V input → 5 V/0.5 A flyback converter for PLC I/O module. IC Role / Device Role / Timing Role: Secondary-side unidirectional current path enabling energy transfer to output capacitor. Use Value: 800 V VRRM provides 2× safety margin over reflected 325 V spike, ensuring robustness against transformer leakage inductance ringing. |
| Snubber Network in Motor Drive Inverter | Car Interior Lighting Power Supply |
Use Scenario: RCD snubber clamp across IGBT collector-emitter in 12 V BLDC motor control. IC Role / Device Role / Timing Role: Fast recovery path for snubber capacitor discharge during switching transitions. Use Value: 500 ns trr ensures complete discharge before next switching edge, preventing snubber inefficiency and thermal runaway at 20 kHz switching. | Use Scenario: Reverse polarity protection and input rectification in 12 V vehicle USB charger module. IC Role / Device Role / Timing Role: Input-stage rectifier converting alternator AC ripple to stabilized DC bus. Use Value: AEC-Q101 qualification and 150°C TJ rating allow direct placement near engine compartment PCBs without thermal derating. |
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 | 800 V VRRM, 1 A IF, 75 ns trr, DO-214AC package | Higher IF and faster trr, but larger footprint and no AEC-Q101 qualification | Preferred where higher current or tighter timing is needed, but not for automotive production |
| ON Semi MUR108 | 800 V VRRM, 1 A IF, 75 ns trr, DO-41 through-hole | Faster recovery and higher current, but through-hole mounting limits automation and thermal performance | Suitable for prototyping or legacy through-hole designs; not recommended for new SMT automotive layouts |
Compared with STTH1R08 and MUR108, the RS1KLH trades speed and current headroom for AEC-Q101 compliance, Sub SMA compactness, and moisture-insensitive assembly-making it optimal for volume automotive SMT production where reliability and process compatibility outweigh raw performance.
Availability
RS1KLH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter design, and snubber circuit implementation requiring stable component supply and long-term lifecycle support.
Supply support for RS1KLH 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, serving global automotive, industrial, and consumer markets since 1979.
The RS1KLH belongs to TSC's RS1xLH fast recovery rectifier family, engineered specifically for AEC-Q101-compliant automotive power conversion where compact size, thermal resilience, and assembly robustness are prioritized over ultra-fast switching.
FAQ
What is the maximum junction temperature rating for RS1KLH?
The RS1KLH has a maximum junction temperature (TJ max) of +150°C, verified per AEC-Q101 stress testing. This rating allows the RS1KLH to operate reliably in under-hood automotive environments without thermal derating when mounted on ≥25 mm² copper pour. The device's RθJA of 105°C/W defines the thermal interface requirement for maintaining TJ ≤150°C at 0.8 A DC load.
Is RS1KLH qualified for automotive applications?
Yes, RS1KLH is AEC-Q101 qualified, with test reports covering HTGB, HTRB, temperature cycling, and ESD per JESD47. Its glass-passivated junction, moisture sensitivity level 1, and halogen-free construction meet automotive manufacturing and field reliability requirements. RS1KLH is commonly deployed in car lighting and body control modules where such qualification is mandatory.
What does the 'K' in RS1KLH indicate?
The 'K' in RS1KLH denotes the 800 V repetitive peak reverse voltage (VRRM) rating, per TSC's ordering code convention: A=50V, B=100V, D=200V, G=400V, J=600V, K=800V, M=1000V. This coding is confirmed in the Absolute Maximum Ratings table on page 1 of the RS1ALH–RS1MLH datasheet (Version A2103), where RS1KLH is explicitly listed with VRRM = 800 V.
What is the reverse recovery time (trr) of RS1KLH and how is it measured?
The RS1KLH has a reverse recovery time (trr) of 500 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC standards. This value is specified in the Electrical Specifications table on page 2 of the RS1ALH–RS1MLH datasheet (Version A2103). The test circuit and waveform definitions are shown in Figure 6 of the same document.
Does RS1KLH have a halogen-free and RoHS-compliant construction?
Yes, RS1KLH is both RoHS compliant and halogen-free per IEC 61249-2-21. These attributes are explicitly stated in the FEATURES section of the RS1ALH–RS1MLH datasheet (Version A2103). The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated to J-STD-002 standards-ensuring environmental compliance and solder joint integrity.
RS1KLH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 800 mA
- 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:
- Sub SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1KLH FAQ
1.How can I place an order for RS1KLH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1KLH 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 RS1KLH reliable?
The price and inventory of RS1KLH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1KLH is usually 5 days.
3.What payment methods are accepted for RS1KLH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1KLH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1KLH?
RS1KLH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1KLH 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 RS1KLH?
For technical support, including RS1KLH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1KLH requirements.
6.How does Aetrix verify that RS1KLH is sourced from the original manufacturer or authorized distributors?
All RS1KLH 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 RS1KLH meets industry standards.
7.What is the process for return or replacement of RS1KLH?
All RS1KLH units undergo pre-shipment inspection (PSI). If there is an issue with RS1KLH, 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 RS1KLH part is unused and in its original packaging.
Return procedure for RS1KLH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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