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Taiwan Semiconductor Corporation RS1G-T
- Part No.:
- RS1G-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
RS1G-T.pdf
- Description:
- 150NS, 1A, 400V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:8,253
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Product details
Overview
RS1G-T from Taiwan Semiconductor is a 1A, 400V fast recovery surface-mount rectifier in DO-214AC (SMA) 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. It serves as a primary output rectifier in DC-DC converters requiring high switching efficiency and thermal reliability up to 150°C junction temperature.
For engineers reviewing the RS1G-T datasheet, RS1G-T pinout, RS1G-T application, or RS1G-T equivalent, key selection criteria include repetitive peak reverse voltage (400 V), fast trr performance (150 ns), thermal resistance (RθJA = 105 °C/W), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance for industrial power supply designs.
Technical Context
The RS1G-T employs a glass-passivated silicon junction optimized for fast recovery in high-frequency switching topologies. Its single-die configuration and DO-214AC package support automated placement while maintaining low forward voltage drop and controlled junction capacitance (10 pF at 1 MHz, 4 V).
Designed for operation across -55°C to +150°C junction range, it delivers stable reverse leakage (≤5 µA at 25°C, ≤50 µA at 125°C) and withstands 30 A non-repetitive surge current (8.3 ms half-sine), making it suitable for transient-heavy SMPS secondary-side rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or forward converter output stages |
| IF | 1 A continuous - Rated average forward current; determines steady-state power dissipation capability (PD ≈ IF × VF) |
| trr | 150 ns - Fast reverse recovery time; minimizes switching losses and EMI in 100–500 kHz SMPS designs |
| VF (max) | 1.3 V @ 1 A, 25°C - Low conduction loss improves system efficiency; critical for thermally constrained PCB layouts |
| RθJA | 105 °C/W - Junction-to-ambient thermal resistance; informs heatsinking requirements for 1 A load at ambient ≤70°C |
| IR (max) | 5 µA @ 25°C - Low reverse leakage preserves regulation in high-impedance feedback paths and low-power standby modes |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-anode/single-cathode configuration. Cathode identified by molded band. Matte tin-plated leads, J-STD-002 solderable, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or ground return) |
| Cathode | Forward current exit point | Connected to output capacitor positive rail; polarity marked by visible band on body |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments |
| Fast recovery (150 ns) | Reduces turn-off energy loss and diode-induced ringing in synchronous rectifier-assisted or quasi-resonant converters |
| Low VF (1.3 V max) | Enables >92% efficiency in 12 V output, 1 A DC-DC modules without active cooling |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking-critical for high-volume SMT production |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Auxiliary Supply |
|---|---|
Use Scenario: Secondary-side rectification in isolated 5–24 V, 1 A buck-derived or flyback converters powering control logic or sensors. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary to regulated DC. Use Value: 150 ns trr limits reverse recovery charge (Qrr), reducing MOSFET turn-on loss and improving light-load efficiency. | Use Scenario: Isolated auxiliary bias supply in 3-phase motor drives delivering 15 V/0.5 A to gate drivers and MCU. IC Role / Device Role / Timing Role: High-voltage output rectifier handling 400 V reverse stress during inverter shoot-through transients. Use Value: 400 V VRRM and 30 A IFSM ensure robustness against reflected voltage spikes without snubber overhead. |
| Industrial PLC Power Module | LED Driver Secondary Rectification |
Use Scenario: Input rectification for 24 V DC input stage of programmable logic controller power supply with wide ambient range (-25°C to +70°C). IC Role / Device Role / Timing Role: Primary AC-DC bridge replacement in compact, convection-cooled front-end design. Use Value: RθJA = 105 °C/W and TJMAX = 150°C enable full 1 A rating without forced air, reducing BOM cost. | Use Scenario: Constant-current LED driver output stage rectifying 36 V AC from high-frequency transformer in Class II isolated architecture. IC Role / Device Role / Timing Role: Fast-switching rectifier minimizing conduction loss and thermal rise in sealed LED housing. Use Value: 1.3 V VF max reduces power dissipation to <1.3 W at 1 A, enabling use in thermally restricted aluminum-core PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04 | VRRM = 400 V, trr = 35 ns, VF = 1.15 V @ 1 A - faster but higher cost | Better suited for >1 MHz resonant converters where Qrr dominates loss | Choose STTH1R04 when trr < 50 ns is required and budget allows premium pricing |
| SB140 | VRRM = 40 V, trr = 35 ns, IF = 1 A - lower voltage rating, Schottky construction | Limited to low-VOUT (<24 V) applications; unsuitable for 400 V blocking | Select SB140 only for sub-40 V outputs where ultra-low VF (0.45 V) justifies voltage derating |
Compared with STTH1R04 and SB140, the RS1G-T provides optimal balance of 400 V blocking, 150 ns recovery, and cost-effective DO-214AC packaging for mainstream 100–300 kHz industrial SMPS-without over-specifying speed or under-specifying voltage.
Availability
RS1G-T is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and industrial PLC power modules requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.
Supply support for RS1G-T 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 industrial, computing, and consumer markets since 1979.
The RS1G-T belongs to TSC's RS1x-T fast recovery rectifier family, engineered specifically for high-efficiency, surface-mount secondary-side rectification in cost-sensitive, high-volume power supplies operating up to 150°C junction temperature.
FAQ
What is the maximum junction temperature rating for RS1G-T?
The RS1G-T has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet F2111. This enables reliable operation in enclosed industrial enclosures or near heat-generating components without derating at full 1 A current, provided PCB copper area and ambient conditions meet thermal design guidelines for DO-214AC.
Does RS1G-T have a halogen-free construction?
Yes, the RS1G-T is halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the "Features" section of the Taiwan Semiconductor RS1D-T–RS1M-T datasheet (Version F2111). The molding compound and internal materials contain no bromine, chlorine, or other regulated halogens, supporting environmental compliance for export to EU and other regulated markets.
What is the reverse recovery time (trr) specification for RS1G-T?
The RS1G-T 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 conditions per the Electrical Specifications table in the RS1D-T–RS1M-T datasheet. This value is confirmed for all units within the RS1G-T ordering code and distinguishes it from slower variants like RS1J-T (250 ns) and RS1K-T (500 ns).
Is RS1G-T compatible with lead-free reflow soldering processes?
Yes, the RS1G-T features matte tin-plated leads compliant with J-STD-002 for solderability and is rated MSL Level 1 per J-STD-020, meaning it can undergo standard lead-free reflow profiles (e.g., JEDEC J-STD-020D peak 260°C) without baking or special handling. Its UL 94V-0 molding compound also withstands repeated thermal excursions.
What does the marking code 'RS1G' indicate on the RS1G-T device body?
The marking code 'RS1G' laser-etched on the RS1G-T case directly identifies the device as the 400 V variant in the RS1x-T series, per the Absolute Maximum Ratings table in the Taiwan Semiconductor datasheet. 'G' corresponds exclusively to VRRM = 400 V - distinct from RS1D (200 V), RS1J (600 V), RS1K (800 V), and RS1M (1000 V) - ensuring unambiguous visual identification during assembly and inspection.
RS1G-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 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 @ 400 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1G-T FAQ
1.How can I place an order for RS1G-T through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1G-T 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 RS1G-T reliable?
The price and inventory of RS1G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1G-T is usually 5 days.
3.What payment methods are accepted for RS1G-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1G-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1G-T?
RS1G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1G-T 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 RS1G-T?
For technical support, including RS1G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1G-T requirements.
6.How does Aetrix verify that RS1G-T is sourced from the original manufacturer or authorized distributors?
All RS1G-T 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 RS1G-T meets industry standards.
7.What is the process for return or replacement of RS1G-T?
All RS1G-T units undergo pre-shipment inspection (PSI). If there is an issue with RS1G-T, 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 RS1G-T part is unused and in its original packaging.
Return procedure for RS1G-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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