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Taiwan Semiconductor Corporation RS1DLW
- Part No.:
- RS1DLW
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
RS1DLW.pdf
- Description:
- 150NS, 1A, 200V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:12,870
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Product details
Overview
RS1DLW from Taiwan Semiconductor is a 1 A, 200 V fast recovery surface-mount rectifier diode in SOD-123W package, featuring 150 ns reverse recovery time, 1.3 V max forward voltage at 1 A, and 5 µA max reverse leakage at 25°C - deployed in DC-DC converters and switching-mode power supplies.
For engineers reviewing the RS1DLW datasheet, RS1DLW pinout, RS1DLW application, or RS1DLW equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, 30 A non-repetitive surge rating, 175°C maximum junction temperature, low-profile SOD-123W footprint, and J-STD-020 Level 1 moisture sensitivity.
Technical Context
The RS1DLW is a single-die, silicon planar fast recovery rectifier with glass-passivated junction, optimized for high-frequency switching operation. Its 150 ns trr and 1.3 V VF support efficient energy transfer in compact SMPS designs where thermal management and conduction loss are critical.
Thermal performance is defined by RθJL = 25°C/W and RθJA = 80°C/W, enabling reliable operation up to 175°C junction temperature. Polarity is marked by cathode band; terminals are matte tin-plated per J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous Forward Current) | 1 A - supports steady-state output current in low-power DC-DC stages |
| VRRM (Repetitive Peak Reverse Voltage) | 200 V - defines maximum blocking capability in primary-side clamp or secondary-side rectification |
| trr (Reverse Recovery Time) | 150 ns - enables stable operation up to ~1 MHz switching frequencies without excessive switching loss |
| VF (Forward Voltage, max @ 1 A) | 1.3 V - limits conduction loss to ≤1.3 W at full rated current |
| IR (Reverse Leakage, max @ 25°C) | 5 µA - ensures minimal standby power loss in high-impedance hold-up circuits |
| TJ MAX (Maximum Junction Temperature) | 175°C - allows operation in thermally constrained environments such as sealed industrial enclosures |
Pinout & Package
Package: SOD-123W - low-profile, surface-mount plastic case with UL 94V-0 molding compound, 0.016 g mass, and cathode polarity indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node return path) |
| Cathode | Current exit terminal during forward conduction; polarity-marked end | Connected to output rail or filter capacitor positive; determines unidirectional current flow direction |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enhances long-term reliability under humidity and thermal cycling stress in industrial-grade power modules |
| Low profile SOD-123W package | Enables <0.9 mm board height in space-constrained USB-C PD adapters and IoT power bricks |
| J-STD-020 Level 1 moisture sensitivity | Eliminates bake preconditioning prior to reflow, reducing manufacturing cycle time and cost |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green electronics manufacturing |
Applications
| DC-DC Converter Secondary Rectification | Switching Mode Inverter Auxiliary Supply |
|---|---|
Use Scenario: Isolated buck-derived DC-DC converter delivering 5 V/1 A to microcontroller subsystems in programmable logic controllers. IC Role / Device Role / Timing Role: Fast recovery rectifier conducting during transformer secondary half-cycle; replaces slower general-purpose diodes to reduce switching loss. Use Value: 150 ns trr and 1.3 V VF minimize conduction + recovery losses, improving efficiency by ≥2% over 1N4007-based designs at 250 kHz. | Use Scenario: Auxiliary 12 V bias supply in three-phase motor drive inverters, derived from main DC bus via flyback transformer. IC Role / Device Role / Timing Role: Output rectifier handling discontinuous conduction mode (DCM) flyback waveforms with rapid voltage reversal. Use Value: 200 V VRRM safely withstands reflected flyback spikes; 30 A IFSM tolerates startup surges without degradation. |
| USB-C Power Delivery Adapter Output Stage | Industrial Sensor Node Power Conditioning |
Use Scenario: Final-stage synchronous rectification replacement in 27 W USB-C charger secondary side operating at 500 kHz. IC Role / Device Role / Timing Role: Discrete fast recovery diode used where synchronous FET control complexity is avoided. Use Value: SOD-123W footprint matches layout constraints; 175°C TJ rating sustains reliability under sealed enclosure thermal conditions. | Use Scenario: Low-power 3.3 V rail generation from 24 V field bus in wireless vibration sensor nodes with 10-year battery life target. IC Role / Device Role / Timing Role: Input protection and rectification element in ultra-low-quiescent linear regulator front-end. Use Value: 5 µA IR at 25°C and 150 µA at 125°C limit no-load leakage, preserving battery capacity over extended shelf life. |
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 MUR120 | Same 1 A / 200 V rating but TO-220AC package; 50 ns trr; higher VF (1.4 V) | Requires through-hole mounting and heatsinking; unsuitable for ultra-thin designs | Select when higher surge robustness and legacy PCB compatibility outweigh size constraints |
| Vishay VS-1EQH02-M3/5AT | SOD-123W package, 1 A / 200 V, 35 ns trr, 1.15 V VF, but rated only to 150°C TJ | Better high-frequency efficiency but limited thermal margin in sealed enclosures | Select when switching frequency >1 MHz and ambient temperature remains <85°C |
Compared with MUR120 and VS-1EQH02-M3/5AT, the RS1DLW offers optimal balance of SMD compatibility, 175°C thermal headroom, and 150 ns trr - making it preferred for space- and temperature-constrained industrial DC-DC modules where long-term reliability is prioritized over marginal speed gains.
Availability
RS1DLW is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and industrial sensor power conditioning requiring stable component supply across multi-year production cycles.
Supply support for RS1DLW 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 industrial, computing, and consumer markets since 1979.
The RS1DLW belongs to TSC's RS1xLW fast recovery rectifier family, engineered specifically for high-efficiency, surface-mount power conversion in space-constrained and thermally demanding applications.
FAQ
What is the maximum junction temperature rating for RS1DLW?
The RS1DLW has a maximum junction temperature (TJ MAX) of +175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet revision C2103. This rating enables deployment in sealed industrial enclosures and high-ambient-temperature environments where thermal derating margins are critical. The RS1DLW maintains specified electrical performance up to this limit when operated within its thermal resistance constraints (RθJL = 25°C/W).
Does RS1DLW have a cathode band marking, and how is polarity identified?
Yes, RS1DLW uses a cathode band marking on the SOD-123W package body to indicate polarity, consistent with JEDEC standard orientation. The banded end is the cathode terminal, and the opposite end is the anode. This marking aligns with IPC-7351 pad layout recommendations and ensures correct orientation during automated placement. The RS1DLW datasheet explicitly confirms polarity indication via cathode band in its mechanical data section.
What is the reverse recovery time (trr) specification for RS1DLW, and under what test conditions?
The RS1DLW has a reverse recovery time (trr) of 150 ns maximum, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the Electrical Specifications table in the Taiwan Semiconductor RS1DLW–RS1MLW datasheet (C2103). This value applies exclusively to RS1DLW and differs from higher-voltage variants (e.g., RS1KLW/RS1MLW specify 250 ns), confirming its optimized speed for 200 V-class switching applications.
Is RS1DLW compliant with RoHS and halogen-free requirements?
Yes, RS1DLW is RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21, as stated in the Features section of the official Taiwan Semiconductor datasheet. The device uses matte tin-plated leads and UL 94V-0 molding compound, and all materials meet TSC's green product policy. These certifications apply directly to the RS1DLW ordering code and are verified in production lot documentation.
What is the moisture sensitivity level (MSL) of RS1DLW, and does it require baking before reflow?
The RS1DLW 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 dry-pack requirements and requires no pre-reflow baking. This MSL rating is confirmed in the Mechanical Data section of the Taiwan Semiconductor datasheet and simplifies SMT line integration for high-volume manufacturing of RS1DLW-based power supplies.
RS1DLW 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- -55°C ~ 175°C
RS1DLW FAQ
1.How can I place an order for RS1DLW through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1DLW 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 RS1DLW reliable?
The price and inventory of RS1DLW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1DLW is usually 5 days.
3.What payment methods are accepted for RS1DLW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1DLW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1DLW?
RS1DLW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1DLW 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 RS1DLW?
For technical support, including RS1DLW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1DLW requirements.
6.How does Aetrix verify that RS1DLW is sourced from the original manufacturer or authorized distributors?
All RS1DLW 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 RS1DLW meets industry standards.
7.What is the process for return or replacement of RS1DLW?
All RS1DLW units undergo pre-shipment inspection (PSI). If there is an issue with RS1DLW, 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 RS1DLW part is unused and in its original packaging.
Return procedure for RS1DLW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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