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Taiwan Semiconductor Corporation RS1G
- Part No.:
- RS1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
RS1G.pdf
- Description:
- DIODE GEN PURP 400V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:14,143
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Product details
Overview
RS1G from Taiwan Semiconductor is a 1 A, 400 V repetitive peak reverse voltage (VRRM) fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 150 ns reverse recovery time (trr), 1.3 V max forward voltage at 1 A, and 5 µA max reverse leakage at 25°C - used in DC-DC converters and snubber circuits.
For engineers reviewing the RS1G datasheet, RS1G pinout, RS1G application, or RS1G equivalent, key selection criteria include its 400 V VRRM, fast 150 ns trr, DO-214AC thermal performance (RθJA = 105°C/W), and compatibility with automated SMT placement per J-STD-020 Level 1 moisture sensitivity.
Technical Context
The RS1G is a single-die, silicon planar junction fast recovery rectifier optimized for high-frequency switching applications. Its glass-passivated chip junction ensures stable operation up to 175°C junction temperature, while the DO-214AC (SMA) package provides robust thermal dissipation with RθJL = 30°C/W.
Designed for efficiency-critical topologies, it delivers low forward voltage (≤1.3 V @ 1 A) and tight reverse leakage control (≤5 µA @ 25°C, ≤50 µA @ 125°C), supporting reliable operation in compact power supplies and lighting drivers where thermal management and fast transient response are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum non-repetitive reverse blocking voltage; defines safe operating range in 400 V-rated SMPS designs |
| IF | 1 A continuous - average forward current rating at TA = 75°C; sets baseline conduction capability |
| trr | 150 ns - measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables efficient operation in ≥100 kHz switching topologies |
| VF | ≤1.3 V @ 1 A, 25°C - forward conduction loss directly impacts system efficiency and thermal design |
| IR | ≤5 µA @ 400 V, 25°C - low leakage preserves output regulation and reduces standby power loss |
| RθJA | 105 °C/W - junction-to-ambient thermal resistance under standard PCB conditions; informs heatsinking requirements |
| Package | DO-214AC (SMA) - industry-standard SMT outline with cathode band polarity marking and J-STD-002 solderability |
Pinout & Package
DO-214AC (SMA) package: molded plastic body, matte tin-plated leads, cathode indicated by band, weight ≈ 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; must handle full 1 A RMS and 30 A surge |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; carries return current and sustains 400 V reverse bias during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and humidity resistance without hermetic sealing |
| Fast 150 ns recovery | Reduces switching losses and EMI generation in high-frequency DC-DC converters |
| J-STD-020 Level 1 moisture sensitivity | Enables direct placement without baking; supports standard SMT reflow profiles |
| RoHS & halogen-free compliance | Meets global environmental regulations for industrial and consumer end equipment |
| UL 94V-0 molding compound | Provides flame-retardant housing suitable for safety-critical power applications |
Applications
| DC-DC Converter | Snubber Circuit |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Fast recovery rectifier handling 1 A output current with minimal conduction and switching loss. Use Value: 150 ns trr and ≤1.3 V VF reduce heat generation and improve efficiency over slower or higher-VF alternatives. | Use Scenario: Voltage spike suppression across MOSFETs or IGBTs in motor drives and inverters. IC Role / Device Role / Timing Role: Clamp diode absorbing inductive kickback energy during switching transitions. Use Value: 400 V VRRM and 30 A IFSM withstand repetitive transients while maintaining fast turn-off to limit clamping duration. |
| LED Driver | Switching Inverter |
Use Scenario: Output rectification in constant-current LED drivers for commercial lighting systems. IC Role / Device Role / Timing Role: High-reliability rectifier delivering stable DC output under thermal cycling and line-voltage variation. Use Value: 175°C TJMAX and ≤5 µA IR at 25°C ensure consistent lumen maintenance and low standby loss. | Use Scenario: DC bus rectification in low-power AC-DC inverters for HVAC or appliance control. IC Role / Device Role / Timing Role: Single-phase bridge leg component converting rectified AC to regulated DC bus. Use Value: DO-214AC footprint and J-STD-002 solderability support high-yield automated assembly in volume production. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04 | Same 1 A / 400 V rating; trr = 120 ns (slightly faster); VF = 1.25 V typ | Optimized for ultra-fast switching; marginally better efficiency at high frequency | Preferred when <120 ns trr is required and STMicroelectronics sourcing is preferred |
| ES1D | Same DO-214AC package; VRRM = 200 V (lower); trr = 35 ns (much faster); IF = 1 A | Limited to ≤200 V circuits; suited for very high-frequency, low-voltage SMPS | Select only if system VRRM requirement is ≤200 V and sub-50 ns recovery is critical |
Compared with STTH1R04 and ES1D, the RS1G offers balanced performance at 400 V with proven thermal robustness (175°C TJMAX) and J-STD-020 Level 1 handling - making it optimal for cost-sensitive, thermally demanding 400 V industrial and lighting applications where moderate speed suffices.
Availability
RS1G is available at Aetrix Electronics and suitable for DC-DC converters, snubber circuits, and LED drivers requiring stable component supply, consistent parametric performance, and RoHS-compliant SMT rectifiers.
Supply support for RS1G 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 belongs to TSC's RS1x fast rectifier product line, engineered specifically for high-efficiency, surface-mount power conversion in space-constrained and thermally demanding applications - emphasizing reliability, automation readiness, and regulatory compliance.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for RS1G?
The RS1G has a VRRM of 400 V, meaning it can safely block up to 400 V of reverse voltage in repetitive operation. This rating is confirmed in the Absolute Maximum Ratings table and defines the upper limit for use in 400 V-rated power supplies and inverters. Exceeding this voltage risks avalanche breakdown and device failure.
What is the reverse recovery time (trr) of RS1G and how is it measured?
The RS1G has a trr of 150 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value reflects the time required for the device to transition from conduction to full blocking state, directly impacting switching losses in high-frequency topologies. The RS1G datasheet specifies this parameter explicitly for the RS1G variant.
Is RS1G suitable for automated SMT assembly?
Yes, RS1G is designed for automated placement and reflow soldering. It meets J-STD-020 moisture sensitivity level 1, requires no pre-baking, and features matte tin-plated leads compliant with J-STD-002. Its DO-214AC (SMA) package geometry and marking (cathode band) support high-accuracy pick-and-place and optical inspection in volume manufacturing.
What is the maximum junction temperature (TJMAX) rating for RS1G?
The RS1G has a maximum junction temperature rating of +175°C, verified per absolute maximum ratings. This allows operation in high-ambient environments such as enclosed LED drivers or industrial power supplies. Thermal design must ensure that actual junction temperature - calculated using RθJA = 105°C/W and power dissipation - remains below this limit under worst-case load and ambient conditions.
Does RS1G have RoHS and halogen-free compliance?
Yes, RS1G is RoHS compliant and halogen-free, as stated in the official Taiwan Semiconductor documentation. These attributes meet EU Directive 2011/65/EU and IEC 61249-2-21 requirements, enabling use in environmentally regulated end equipment including commercial lighting, industrial controls, and consumer electronics.
RS1G 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:
- 10pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS1G FAQ
1.How can I place an order for RS1G through Aetrix?
Please submit a Request for Quotation (RFQ) for RS1G 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 reliable?
The price and inventory of RS1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS1G is usually 5 days.
3.What payment methods are accepted for RS1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS1G?
RS1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS1G 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?
For technical support, including RS1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS1G requirements.
6.How does Aetrix verify that RS1G is sourced from the original manufacturer or authorized distributors?
All RS1G 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 meets industry standards.
7.What is the process for return or replacement of RS1G?
All RS1G units undergo pre-shipment inspection (PSI). If there is an issue with RS1G, 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 part is unused and in its original packaging.
Return procedure for RS1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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