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Taiwan Semiconductor Corporation RS1DAL
- Part No.:
- RS1DAL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
RS1DAL.pdf
- Description:
- DIODE GEN PURP 200V 1A THIN SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,142
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Product details
Overview
RS1DAL from Taiwan Semiconductor is a 1A, 200V fast recovery surface-mount rectifier in a Thin SMA package, featuring 0.97V forward voltage at 1.0A/25°C, 150ns reverse recovery time, and 175°C maximum junction temperature. It serves as a primary AC/DC input rectifier in compact DC-DC converters requiring low conduction loss and high thermal robustness.
For engineers reviewing the RS1DAL datasheet, RS1DAL pinout, RS1DAL application, or RS1DAL equivalent, key selection criteria include its 200V VRRM rating, 30A IFSM surge capability, J-STD-020 Level 1 moisture sensitivity, RoHS/halogen-free compliance, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
The RS1DAL employs a single-die, glass-passivated PN junction optimized for fast recovery (trr ≤ 150ns) and low forward voltage drop. Its thermal design targets ≤19°C/W junction-to-lead resistance when mounted on a 5mm × 5mm copper pad, enabling reliable operation up to 175°C junction temperature under continuous 1A DC load.
It operates within a -55°C to +175°C storage and junction temperature range, with reverse leakage limited to 1µA at 25°C and 33µA at 125°C under rated VRRM. The device exhibits 7pF junction capacitance at 1MHz/4V, supporting high-frequency switching in SMPS front-end stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; defines safe AC input peak handling in bridge or single-diode rectification |
| IF | 1 A - Continuous forward current rating; supports steady-state output of up to ~12W in 12V DC-DC outputs with proper heatsinking |
| trr | 150 ns - Reverse recovery time; enables efficient operation up to ~500 kHz switching frequency without excessive switching loss |
| VF @ 1A/25°C | 0.97 V - Forward voltage drop; contributes ~0.97W conduction loss at full load, critical for thermal budget in sealed enclosures |
| RθJL | 19 °C/W - Junction-to-lead thermal resistance; allows direct thermal path to PCB copper, reducing need for external heatsinks |
| IR @ 25°C | 1 µA - Max reverse leakage at rated VRRM; ensures minimal standby power loss in always-on power supplies |
Pinout & Package
Package: Thin SMA (JEDEC DO-221AC variation), low-profile surface-mount package with matte tin-plated leads, cathode indicated by band, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; must withstand 30A surge (8.3ms half-sine) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to bulk capacitor positive rail; blocks 200V reverse during off-cycle |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and humidity resistance in industrial environments without conformal coating |
| Fast recovery (trr ≤ 150ns) | Reduces switching losses in high-frequency SMPS, improving efficiency over standard rectifiers by ≥3% at 300 kHz |
| Thin SMA package | Enables ultra-low profile (<1.45 mm height) designs and compatibility with fine-pitch automated pick-and-place equipment |
| J-STD-020 Level 1 MSL | Eliminates bake requirements prior to reflow, reducing manufacturing cycle time and cost in high-volume SMT lines |
Applications
| AC-DC Front-End Rectification | Isolated DC-DC Converter Input |
|---|---|
Use Scenario: Single-phase rectification of 120/230VAC mains input in compact offline adapters. IC Role / Device Role / Timing Role: Primary unidirectional current switch converting AC to pulsating DC before bulk capacitor filtering. Use Value: 200V VRRM and 30A IFSM ensure margin against line surges; 0.97V VF minimizes heat generation in space-constrained enclosures. | Use Scenario: Secondary-side rectification in flyback or forward converters delivering 5–24V outputs. IC Role / Device Role / Timing Role: Synchronous or freewheeling rectifier conducting during transformer reset phase. Use Value: 150ns trr prevents cross-conduction loss with MOSFET switches; 175°C TJ max supports operation near hot components. |
| High-Frequency Inverter Stage | Industrial Sensor Power Supply |
Use Scenario: DC bus rectification in motor drive inverters operating at 20–100 kHz PWM frequencies. IC Role / Device Role / Timing Role: Freewheeling diode clamping inverter leg voltage spikes during switching transitions. Use Value: 7pF CJ and fast trr suppress ringing and EMI; RθJL = 19°C/W enables direct thermal coupling to copper pour. | Use Scenario: Low-power auxiliary supply for 4–20mA loop-powered sensors in factory automation. IC Role / Device Role / Timing Role: Input protection and rectification for isolated 3.3V/5V microcontroller rails. Use Value: 1µA IR at 25°C preserves battery life in backup modes; halogen-free/RoHS compliance meets industrial safety mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02 | Same 1A/200V rating but TO-277 package; VF = 0.95V @ 1A; trr = 120ns; higher RθJA (100°C/W) | Requires larger PCB footprint; better for ultra-fast timing-critical snubbers | Prefer RS1DAL for space-constrained SMT designs; STTH1R02 where sub-120ns trr is mandatory |
| MBR120ESFT1G | Schottky diode, 1A/20V; VF = 0.45V @ 1A; no reverse recovery; max VRRM only 20V | Not suitable for 200V AC line rectification; limited to low-voltage DC-DC outputs | Select RS1DAL for 200V-rated applications; MBR120ESFT1G only for ≤20V secondary-side use |
Compared with STTH1R02 and MBR120ESFT1G, the RS1DAL uniquely balances 200V capability, 150ns trr, and Thin SMA packaging-making it optimal for cost-sensitive, high-density AC-DC front ends where Schottky voltage limits or through-hole footprints are unacceptable.
Availability
RS1DAL is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose industrial power supplies requiring stable component supply, consistent parametric performance, and J-STD-020 Level 1 moisture handling.
Supply support for RS1DAL 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, automotive, and industrial markets since 1979.
The RS1DAL belongs to TSC's RS1xAL fast recovery rectifier family, engineered specifically for high-efficiency, surface-mount AC-DC and DC-DC conversion in space- and thermally constrained applications.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for RS1DAL?
The RS1DAL has a VRRM rating of 200 V, meaning it can safely block up to 200 volts of repetitive reverse voltage without breakdown. This rating is verified per JEDEC test conditions and defines the upper limit for AC input voltage peaks in rectifier applications. Exceeding this voltage risks avalanche failure. The RS1DAL datasheet confirms this value in the Absolute Maximum Ratings table under the RS1DAL column.
What is the forward voltage drop (VF) of RS1DAL at 1.0A and 25°C?
The RS1DAL exhibits a typical forward voltage drop of 0.97 V at 1.0A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating effects. At 125°C, VF drops to 0.83 V due to semiconductor physics, which is also documented in the same datasheet section.
Does RS1DAL have a defined reverse recovery time (trr), and what is its value?
Yes, the RS1DAL has a specified reverse recovery time of ≤150 ns under test conditions of IF = 0.5A, IR = 1.0A, and Irr = 0.25A. This parameter is explicitly listed in the Electrical Specifications table for the RS1DAL variant. The trr value is critical for minimizing switching losses in high-frequency power converters and distinguishes RS1DAL from standard recovery rectifiers.
What package type does RS1DAL use, and is it compatible with automated assembly?
The RS1DAL uses the Thin SMA package (JEDEC DO-221AC variation), a low-profile surface-mount outline with matte tin-plated leads. It is explicitly rated for automated placement per manufacturer documentation and carries J-STD-020 Moisture Sensitivity Level 1, eliminating pre-bake requirements. The 0.029g weight and standardized pad layout further support high-yield SMT processing.
What is the maximum junction temperature (TJ MAX) specification for RS1DAL?
The RS1DAL has a maximum junction temperature rating of +175°C, as stated in both the Absolute Maximum Ratings and Thermal Performance sections of the datasheet. This allows sustained operation in thermally demanding environments such as enclosed power supplies or proximity to hot components. Derating curves in the datasheet show usable current capacity down to zero amps at 175°C ambient when mounted on a 5mm × 5mm Cu pad.
RS1DAL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- 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:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- 7pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1DAL FAQ
1.How can I place an order for RS1DAL through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1DAL 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 RS1DAL reliable?
The price and inventory of RS1DAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1DAL is usually 5 days.
3.What payment methods are accepted for RS1DAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1DAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1DAL?
RS1DAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1DAL 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 RS1DAL?
For technical support, including RS1DAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1DAL requirements.
6.How does Aetrix verify that RS1DAL is sourced from the original manufacturer or authorized distributors?
All RS1DAL 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 RS1DAL meets industry standards.
7.What is the process for return or replacement of RS1DAL?
All RS1DAL units undergo pre-shipment inspection (PSI). If there is an issue with RS1DAL, 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 RS1DAL part is unused and in its original packaging.
Return procedure for RS1DAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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