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Taiwan Semiconductor Corporation RS1JLS
- Part No.:
- RS1JLS
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123H
- Datasheet:
-
RS1JLS.pdf
- Description:
- DIODE GP 600V 1.2A SOD123HE
- Quantity:
- Payment:
- Shipping:
Inventory:29,208
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Product details
Overview
RS1JLS from Taiwan Semiconductor is a 1.2A, 600V fast recovery surface-mount rectifier diode in SOD-123HE package, featuring 50A peak surge current, 300ns reverse recovery time, and 175°C maximum junction temperature. It serves as a primary output rectifier in DC-DC converters and switching-mode power supplies where compact size and thermal robustness are critical.
For engineers reviewing the RS1JLS datasheet, RS1JLS pinout, RS1JLS application, or RS1JLS equivalent, key selection criteria include its 600V VRRM, 1.3V max forward voltage at 1.2A, 5µA max reverse leakage at 25°C, and SOD-123HE mechanical compatibility with high-density PCB layouts.
Technical Context
The RS1JLS employs a single-die silicon PN junction optimized for fast recovery (trr ≤ 300ns) under 0.5A forward / 1.0A reverse test conditions. Its thermal design supports 80°C/W junction-to-ambient resistance and 20°C/W junction-to-lead resistance, enabling reliable operation up to 175°C junction temperature.
Rated for repetitive 600V peak reverse voltage (VRRM) and 420V RMS reverse voltage, the device delivers low conduction loss (VF ≤ 1.3V @ 1.2A, 25°C) and controlled reverse leakage (IR ≤ 5µA @ 25°C, ≤150µA @ 125°C), making it suitable for high-frequency switching topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or boost output stages |
| IF | 1.2 A - Continuous average forward current; sets minimum heatsinking requirement in 12V/24V DC-DC outputs |
| IFSM | 50 A - Non-repetitive surge rating (8.3ms half-sine); withstands inrush during cold-start or fault transients |
| trr | 300 ns - Reverse recovery time; enables efficient operation up to ~500 kHz switching frequencies |
| VF | ≤1.3 V @ 1.2A - Forward voltage drop; determines conduction loss of 1.56W max at full load |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; requires ≥25 mm² copper pour for 1.2A continuous use at 70°C ambient |
Pinout & Package
Package: SOD-123HE - Surface-mount plastic case with matte tin-plated leads, J-STD-002 solderable, UL 94V-0 rated molding compound, cathode indicated by band, weight 0.022g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit point | Connected to output capacitor positive rail; polarity marked by visible band on package |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery performance | trr ≤ 300 ns enables reduced switching losses in 200–500 kHz SMPS designs |
| High surge capability | 50 A IFSM supports transient overload without bond-wire fusing |
| Thermal robustness | 175°C TJMAX and 20°C/W RθJL allow direct lead heat sinking in space-constrained modules |
| Automated assembly support | SOD-123HE footprint and level-1 moisture sensitivity enable standard pick-and-place integration |
Applications
| AC-DC Adapter Output Rectification | Isolated DC-DC Converter Secondary Side |
|---|---|
Use Scenario: 12V/1.2A output stage in wall-mounted AC-DC adapters powering IoT gateways. IC Role / Device Role / Timing Role: Primary unidirectional power conversion element converting transformer AC to regulated DC. Use Value: 1.3V VF limits conduction loss to ≤1.56W; SOD-123HE footprint fits <8 mm² board area. | Use Scenario: 5V/1.2A isolated auxiliary supply in industrial PLC power modules. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement in flyback topology. Use Value: 300ns trr minimizes reverse recovery loss at 300 kHz switching; 175°C rating sustains operation near hot components. |
| USB-C PD Power Delivery Sink | Telecom DC Power Distribution |
Use Scenario: Input rectification for 20V/1.2A USB-C PD sink circuitry in portable monitors. IC Role / Device Role / Timing Role: Input-stage protection and polarity enforcement before buck controller. Use Value: 600V VRRM provides 2× margin over 20V input; 5µA IR prevents standby current drain. | Use Scenario: -48V backup power feed rectification in telecom line cards with hot-swap capability. IC Role / Device Role / Timing Role: Reverse-polarity protection and hold-up rectifier in redundant DC feeds. Use Value: 50A IFSM survives 100A surge during hot-insertion; SOD-123HE allows dense dual-feed layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR120SFT1G | Same 1.2A/200V rating but lower VRRM; trr = 35ns (faster), RθJA = 120°C/W (higher thermal resistance) | Not suitable for 600V circuits; better for low-VIN, high-frequency (<1 MHz) designs | Select only when VRRM ≤ 200V and board-level thermal management permits higher RθJA |
| Vishay VS-1N4937-M3/54 | 1.2A/600V rating, but DO-41 through-hole package; trr = 200ns, IFSM = 30A (lower surge) | Requires manual or wave soldering; incompatible with automated SMT lines | Choose only for legacy through-hole designs or prototyping where SMT placement is unavailable |
Compared with MUR120SFT1G and VS-1N4937-M3/54, the RS1JLS uniquely balances 600V blocking, SMT compatibility, 50A surge tolerance, and 300ns recovery-making it optimal for production-grade 1.2A SMPS outputs requiring reliability and manufacturability.
Availability
RS1JLS is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and general-purpose power rectification requiring stable component supply across automotive infotainment, industrial control, and consumer power adapter programs.
Supply support for RS1JLS 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 power and signal conditioning markets since 1979.
The RS1JLS belongs to TSC's RS1xLS fast recovery rectifier family, engineered specifically for high-efficiency, high-density AC-DC and DC-DC power conversion where thermal resilience and SMT scalability are essential.
FAQ
What is the maximum junction temperature rating for RS1JLS?
The RS1JLS has a maximum junction temperature (TJ) rating of +175°C, verified per absolute maximum ratings table. This allows sustained operation in thermally demanding environments such as enclosed power supplies or proximity to MOSFETs. Derating curves confirm usable current down to 0.8A at 125°C ambient, ensuring robustness in RS1JLS-based designs.
Does RS1JLS have a specified reverse recovery time, and under what test conditions?
Yes, RS1JLS specifies a typical reverse recovery time (trr) of ≤300 ns. This value is measured under defined conditions: IF = 0.5A, IR = 1.0A, IRR = 0.25A, per the electrical specifications table. The test circuit diagram is provided in Figure 6 of the RS1JLS datasheet revision E2304.
What is the marking code printed on the RS1JLS device body?
The RS1JLS is marked with "RJLS" on its package surface, as confirmed in the Absolute Maximum Ratings table. This 4-character laser marking appears adjacent to the cathode band and is used for visual identification and traceability in production and field service of RS1JLS units.
Is RS1JLS compliant with RoHS and halogen-free standards?
Yes, RS1JLS is RoHS compliant and halogen-free, as explicitly stated in the FEATURES section. The device meets JEDEC J-STD-020 moisture sensitivity level 1 and passes JESD 201 class 2 whisker testing-critical for long-term reliability in RS1JLS deployments across consumer and industrial applications.
What is the thermal resistance from junction to lead (RθJL) for RS1JLS?
The junction-to-lead thermal resistance (RθJL) for RS1JLS is 20°C/W, per the Thermal Performance table. This low value enables effective heat transfer from the die directly into the PCB copper via the leads-especially valuable when using thermal pads or internal ground planes beneath the SOD-123HE footprint in RS1JLS layouts.
RS1JLS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123H
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 1.2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1.2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 300 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123HE
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1JLS FAQ
1.How can I place an order for RS1JLS through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1JLS 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 RS1JLS reliable?
The price and inventory of RS1JLS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1JLS is usually 5 days.
3.What payment methods are accepted for RS1JLS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1JLS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1JLS?
RS1JLS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1JLS 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 RS1JLS?
For technical support, including RS1JLS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1JLS requirements.
6.How does Aetrix verify that RS1JLS is sourced from the original manufacturer or authorized distributors?
All RS1JLS 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 RS1JLS meets industry standards.
7.What is the process for return or replacement of RS1JLS?
All RS1JLS units undergo pre-shipment inspection (PSI). If there is an issue with RS1JLS, 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 RS1JLS part is unused and in its original packaging.
Return procedure for RS1JLS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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