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Taiwan Semiconductor Corporation RS2GAL
- Part No.:
- RS2GAL
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
RS2GAL.pdf
- Description:
- DIODE GEN PURP 400V 2A THIN SMA
- Quantity:
- Payment:
- Shipping:
Inventory:12,752
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Product details
Overview
RS2GAL from Taiwan Semiconductor is a 2 A, 400 V fast recovery surface-mount rectifier diode in a Thin SMA package, featuring 150 ns reverse recovery time, 1.01 V forward voltage at 2 A/25°C, and 175°C maximum junction temperature. It serves as a primary output rectifier in DC-DC converters and switching-mode power supplies where efficiency and thermal robustness are critical.
For engineers reviewing the RS2GAL datasheet, RS2GAL pinout, RS2GAL application, or RS2GAL equivalent, key selection criteria include its 400 V VRRM, low RθJA of 73°C/W on standard PCB mounting, glass-passivated junction for reliability, and compatibility with automated SMT assembly lines.
Technical Context
The RS2GAL is a single-die, unidirectional silicon rectifier optimized for high-frequency switching applications. Its fast recovery (trr ≤ 150 ns) and low forward voltage (VF = 1.01 V @ 2 A, 25°C) reduce conduction and switching losses in SMPS topologies.
Thermally, it delivers RθJL = 16°C/W and RθJC = 14°C/W, enabling stable operation up to 175°C junction temperature. The device uses a glass-passivated junction and matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse voltage the device blocks reliably in circuit |
| IF | 2 A - Continuous average forward current rating under defined thermal conditions |
| trr | ≤150 ns - Fast reverse recovery enables efficient operation in ≥100 kHz switching converters |
| VF @ 2 A, 25°C | 1.01 V - Low conduction loss reduces heat generation and improves system efficiency |
| RθJA | 73 °C/W - Thermal resistance to ambient on 5 mm × 5 mm Cu pad, informs heatsinking requirements |
| Junction Temp | −55°C to +175°C - Wide operating range supports industrial and automotive under-hood environments |
| CJ @ 1 MHz | 11 pF - Low junction capacitance minimizes switching noise and EMI in high-speed circuits |
Pinout & Package
Package: Thin SMA (JEDEC DO-221AC variation), low-profile surface-mount package with cathode band polarity marking and matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit terminal | Connected to output rail; marked by visible band; carries full load current to filter capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and moisture resistance without hermetic sealing |
| Fast recovery (≤150 ns) | Reduces switching loss and ringing in high-frequency DC-DC converters |
| Low profile Thin SMA package | Enables compact board layout and compatibility with automated pick-and-place equipment |
| J-STD-020 Level 1 MSL | Eliminates need for pre-bake before reflow, simplifying manufacturing flow |
| RoHS & halogen-free | Meets global environmental compliance requirements for commercial and industrial products |
Applications
| AC-DC Adapter Output Rectification | DC-DC Buck Converter Secondary Side |
|---|---|
Use Scenario: 12 V/2 A isolated flyback adapter powering IoT gateways. IC Role / Device Role / Timing Role: Primary output rectifier converting high-frequency transformer output to regulated DC. Use Value: 1.01 V VF at 2 A minimizes dropout and thermal rise in space-constrained enclosures. | Use Scenario: 5 V/2 A point-of-load buck converter in telecom baseband boards. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in non-synchronous designs requiring simplicity and cost control. Use Value: 150 ns trr ensures minimal dead-time loss and clean waveform integrity at 500 kHz switching. |
| Industrial Motor Drive Auxiliary Supply | LED Driver Input Bridge Leg |
Use Scenario: 24 V auxiliary supply derived from main DC bus in servo drive controllers. IC Role / Device Role / Timing Role: Freewheeling diode in isolated auxiliary flyback or forward converter. Use Value: 175°C TJMAX supports reliable operation near heat-generating IGBT modules. | Use Scenario: Single-leg rectifier in constant-current LED driver input stage. IC Role / Device Role / Timing Role: Input AC rectification element feeding bulk capacitor in offline LED drivers. Use Value: 400 V VRRM provides sufficient margin over 265 VAC peak (375 V), ensuring surge robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R04 | Same 2 A / 400 V rating; trr = 50 ns (faster); VF = 1.15 V @ 2 A (higher) | Better suited for >1 MHz converters where ultra-fast recovery dominates efficiency | Prefer RS2GAL when lower VF and cost sensitivity outweigh need for sub-100 ns trr |
| ON Semi MUR240 | Same 2 A / 400 V; trr = 60 ns; VF = 1.10 V @ 2 A; TO-277 package (larger footprint) | Requires PCB redesign due to different package outline and thermal pad layout | Choose RS2GAL for Thin SMA footprint compatibility and tighter board area constraints |
Compared with STTH2R04 and MUR240, the RS2GAL offers the lowest forward voltage in its class and optimal thermal performance per unit area in the Thin SMA package-making it ideal for thermally dense, cost-sensitive 400 V rectification tasks.
Availability
RS2GAL is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and general-purpose power rectification requiring stable component supply across industrial and consumer production programs.
Supply support for RS2GAL 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 and protection markets since 1979.
The RS2GAL belongs to TSC's RS2xAL 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 repetitive peak reverse voltage (VRRM) for RS2GAL?
The RS2GAL has a maximum repetitive peak reverse voltage (VRRM) of 400 V, as specified in the absolute maximum ratings table. This rating defines the highest reverse voltage the device can block repeatedly without breakdown under normal operating conditions. Engineers must ensure that peak circuit voltages-including transients and ringing-remain below this value to guarantee long-term reliability of the RS2GAL in applications such as flyback or forward converters.
What is the forward voltage drop of RS2GAL at full rated current?
The RS2GAL exhibits a typical forward voltage (VF) of 1.01 V at 2.0 A and 25°C, rising to 0.88 V at 2.0 A and 125°C. This low VF directly reduces conduction losses and thermal stress in continuous-duty rectification stages. The RS2GAL's VF remains stable across temperature, supporting predictable thermal design in ambient temperatures up to 85°C with appropriate PCB copper area.
Does RS2GAL have a specified reverse recovery time (trr)?
Yes, the RS2GAL has a maximum reverse recovery time (trr) of 150 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter confirms its suitability for high-frequency switching applications up to several hundred kHz. The RS2GAL's trr is verified per JEDEC test conditions and contributes to reduced switching loss and EMI compared to standard recovery diodes.
What package type does RS2GAL use, and is it RoHS compliant?
The RS2GAL is housed in a Thin SMA package (JEDEC DO-221AC variation), featuring a low-profile outline, glass-passivated chip, and matte tin-plated leads. It is fully RoHS compliant and halogen-free, meeting J-STD-020 Moisture Sensitivity Level 1-meaning no floor-life limitation or pre-bake is required prior to reflow soldering. This makes the RS2GAL compatible with standard SMT processes without special handling.
What is the maximum junction temperature rating for RS2GAL?
The RS2GAL is rated for a maximum junction temperature (TJ) of +175°C, with a storage temperature range of −55°C to +175°C. This wide thermal capability allows deployment in harsh environments such as industrial motor drives or automotive under-hood auxiliary supplies. When mounted on a 5 mm × 5 mm copper pad, its RθJA is 73°C/W, enabling accurate thermal modeling to ensure the RS2GAL stays within safe operating limits under full load.
RS2GAL 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):
- 400 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- 11pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS2GAL FAQ
1.How can I place an order for RS2GAL through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2GAL 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 RS2GAL reliable?
The price and inventory of RS2GAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2GAL is usually 5 days.
3.What payment methods are accepted for RS2GAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2GAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2GAL?
RS2GAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2GAL 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 RS2GAL?
For technical support, including RS2GAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2GAL requirements.
6.How does Aetrix verify that RS2GAL is sourced from the original manufacturer or authorized distributors?
All RS2GAL 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 RS2GAL meets industry standards.
7.What is the process for return or replacement of RS2GAL?
All RS2GAL units undergo pre-shipment inspection (PSI). If there is an issue with RS2GAL, 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 RS2GAL part is unused and in its original packaging.
Return procedure for RS2GAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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