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Taiwan Semiconductor Corporation RS1DLWH
- Part No.:
- RS1DLWH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
RS1DLWH.pdf
- Description:
- 150NS, 1A, 200V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:19,602
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Product details
Overview
RS1DLWH from Taiwan Semiconductor is a 1A, 200V fast recovery surface-mount rectifier in SOD-123W package, featuring glass passivated junction, AEC-Q101 qualification, and 150 ns reverse recovery time. It delivers low forward voltage (1.3 V max at 1 A), low leakage (5 µA at 25°C), and operates up to 175°C junction temperature-used in automotive lighting and DC-DC converter output stages.
For engineers reviewing the RS1DLWH datasheet, RS1DLWH pinout, RS1DLWH application, or RS1DLWH equivalent, key selection criteria include repetitive peak reverse voltage (200 V), surge current rating (30 A), thermal resistance (25 °C/W junction-to-lead), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The RS1DLWH is a single-die, silicon planar fast recovery rectifier optimized for high-efficiency switching applications. Its glass-passivated junction ensures stable performance under thermal cycling and humidity stress, while the SOD-123W low-profile package supports automated placement and meets JESD201 Class 2 whisker resistance.
It operates with a maximum junction temperature of 175°C and exhibits 150 ns reverse recovery time under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A conditions-enabling reduced switching losses in high-frequency converters and snubber circuits where fast turn-off is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Average Forward Current) | 1 A - supports continuous conduction in compact power supplies and LED drivers |
| VRRM (Repetitive Peak Reverse Voltage) | 200 V - rated for 24 V–48 V system-level input/output isolation and transient clamping |
| trr (Reverse Recovery Time) | 150 ns - enables efficient operation up to ~1 MHz switching frequencies in flyback and buck-derived topologies |
| VF (Forward Voltage, max) | 1.3 V @ 1 A, 25°C - limits conduction loss to ≤1.3 W per device at full load |
| RθJL (Junction-to-Lead Thermal Resistance) | 25 °C/W - allows direct PCB copper pour heat sinking for sustained 1 A operation without forced air |
| IR (Reverse Leakage, max) | 5 µA @ 25°C - ensures minimal standby power loss in battery-backed or energy-sensitive systems |
Pinout & Package
Package: SOD-123W - low-profile, surface-mount plastic case with matte tin-plated leads, UL 94V-0 molding compound, polarity indicated by cathode band, weight ≈ 0.016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side (e.g., ground or switch node) in common-cathode configurations |
| Cathode | Current exit terminal during forward conduction; marked by band | Connected to higher-potential rail (e.g., output capacitor positive or boost inductor) for unidirectional current flow |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and lighting ECUs requiring zero-failure field reliability |
| Glass passivated chip junction | Prevents moisture ingress and metallization corrosion, extending lifetime in humid or under-hood environments |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking-reduces manufacturing overhead and avoids delamination risk |
| Low profile SOD-123W package | Height ≤ 1.1 mm allows integration into space-constrained modules such as LED headlamp drivers and infotainment power rails |
Applications
| Automotive Lighting | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: High-brightness LED headlamp driver with PWM dimming and overvoltage protection. IC Role / Device Role / Timing Role: Output freewheeling rectifier in synchronous or quasi-resonant flyback topology. Use Value: 150 ns trr minimizes reverse recovery loss during high-frequency switching, improving efficiency >92% at 500 kHz. | Use Scenario: 12 V to 5 V/3.3 V isolated buck-derived supply for ADAS camera module. IC Role / Device Role / Timing Role: Secondary-side unidirectional current path with low VF and high TJ capability. Use Value: 175°C max junction temperature enables reliable operation near hot SoCs without derating. |
| Snubber Network | General Purpose AC/DC Adapter |
Use Scenario: RCD clamp circuit across MOSFET drain in offline SMPS to suppress voltage spikes. IC Role / Device Role / Timing Role: Fast-recovery diode conducting transient energy during MOSFET turn-off. Use Value: 30 A IFSM withstands repeated surge events without degradation, ensuring long-term snubber integrity. | Use Scenario: Universal-input (90–264 VAC) adapter for consumer IoT gateway. IC Role / Device Role / Timing Role: Bridge rectifier output stage component in voltage-doubler or full-wave configuration. Use Value: Glass passivation and RoHS/halogen-free compliance meet global regulatory requirements for mass-market devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02FL | Same 1 A / 200 V rating; trr = 120 ns (faster), VF = 1.25 V (lower), but not AEC-Q101 qualified | Suitable for industrial/commercial SMPS where automotive qualification is not required | Select when faster switching and lower conduction loss outweigh automotive reliability needs |
| ON Semi MUR120RLG | 1 A / 200 V; trr = 35 ns (significantly faster); VF = 1.15 V; TO-220AC package (not SMD) | Requires through-hole layout and heatsinking; incompatible with automated SMT lines | Choose only if ultra-fast recovery dominates board space and thermal design constraints |
Compared with STTH1R02FL and MUR120RLG, the RS1DLWH uniquely balances AEC-Q101 compliance, SOD-123W mountability, and 150 ns trr-making it optimal for automotive SMT power stages where qualification, size, and thermal robustness are jointly critical.
Availability
RS1DLWH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output rectification, and snubber network applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for RS1DLWH 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 RS1DLWH belongs to TSC's RS1xLWH fast recovery rectifier family, designed specifically for high-reliability, surface-mount power conversion in automotive and industrial environments where thermal resilience and qualification compliance are mandatory.
FAQ
What is the maximum junction temperature rating for RS1DLWH?
The RS1DLWH has a maximum junction temperature (TJ MAX) of +175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This allows sustained operation in under-hood automotive environments and high-density power modules. The RS1DLWH maintains specified electrical parameters up to this limit when thermal design respects RθJL = 25°C/W and PCB copper area is sufficient for heat dissipation.
Is RS1DLWH qualified for automotive applications?
Yes, the RS1DLWH is AEC-Q101 qualified, as explicitly stated in its features list and confirmed in Taiwan Semiconductor's official documentation. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and solderability-ensuring suitability for automotive lighting, body control modules, and other non-safety-critical vehicle subsystems. The RS1DLWH meets these requirements in its standard SOD-123W packaging.
What does the "D" in RS1DLWH indicate?
The "D" in RS1DLWH denotes the 200 V repetitive peak reverse voltage (VRRM) rating, per Taiwan Semiconductor's ordering code convention where "x" in RS1xLWH maps to voltage grade: D=200V, G=400V, J=600V, K=800V, M=1000V. This coding is printed as "RDLW" on the device body and is consistent across the RS1xLWH family datasheet revision A2103.
What is the reverse recovery time (trr) of RS1DLWH, and under what test conditions?
The RS1DLWH has a reverse recovery time (trr) of 150 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, as specified in the Electrical Specifications table. This value applies only to RS1DLWH and RS1GLWH variants; higher-voltage versions (J/K/M) have longer trr. The RS1DLWH's 150 ns trr supports efficient operation in switching power supplies operating up to ~1 MHz.
Does RS1DLWH have halogen-free and RoHS-compliant construction?
Yes, the RS1DLWH is both RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the FEATURES section of the official datasheet. Its molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002. These attributes make the RS1DLWH suitable for export to EU, China, and other regulated markets requiring strict environmental compliance.
RS1DLWH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 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):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- -55°C ~ 175°C
RS1DLWH FAQ
1.How can I place an order for RS1DLWH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1DLWH 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 RS1DLWH reliable?
The price and inventory of RS1DLWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1DLWH is usually 5 days.
3.What payment methods are accepted for RS1DLWH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1DLWH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1DLWH?
RS1DLWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1DLWH 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 RS1DLWH?
For technical support, including RS1DLWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1DLWH requirements.
6.How does Aetrix verify that RS1DLWH is sourced from the original manufacturer or authorized distributors?
All RS1DLWH 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 RS1DLWH meets industry standards.
7.What is the process for return or replacement of RS1DLWH?
All RS1DLWH units undergo pre-shipment inspection (PSI). If there is an issue with RS1DLWH, 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 RS1DLWH part is unused and in its original packaging.
Return procedure for RS1DLWH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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