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Taiwan Semiconductor Corporation RS2AAHR3G
- Part No.:
- RS2AAHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
RS2AAHR3G.pdf
- Description:
- DIODE GEN PURP 50V 1.5A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:10,800
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Product details
Overview
RS2AAHR3G from Taiwan Semiconductor is a 1.5A, 50V fast recovery surface-mount rectifier in DO-214AC (SMA) package, featuring 150 ns reverse recovery time, 1.3 V max forward voltage at 1.5 A, and 5 µA max reverse leakage at 25°C. It serves as a primary output rectifier in low-voltage DC-DC converters.
For engineers reviewing the RS2AAHR3G datasheet, RS2AAHR3G pinout, RS2AAHR3G application, or RS2AAHR3G equivalent, key selection criteria include repetitive peak reverse voltage (50 V), thermal resistance (RθJL = 18 °C/W), junction temperature range (–55 to +175 °C), and RoHS/halogen-free compliance for industrial power supplies.
Technical Context
This device is a single-die, glass-passivated silicon junction rectifier optimized for high-efficiency switching applications. Its fast recovery (trr ≤ 150 ns) and low forward voltage support reduced conduction and switching losses in 50–100 kHz SMPS topologies.
The DO-214AC (SMA) package provides robust thermal performance with RθJA = 55 °C/W and RθJL = 18 °C/W, enabling reliable operation up to 175 °C junction temperature under sustained 1.5 A DC load with proper PCB copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse voltage the device blocks without breakdown |
| IF | 1.5 A - Continuous average forward current rating at TL = 75 °C on standard PCB pad |
| IFSM | 50 A - Peak surge current capability for 8.3 ms half-sine wave, supporting inrush tolerance |
| trr | 150 ns - Measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables high-frequency rectification |
| VF | 1.3 V max - Forward voltage drop at 1.5 A and 25 °C; determines conduction loss in low-VOUT designs |
| IR | 5 µA max - Reverse leakage at rated VR and 25 °C; critical for low-power standby efficiency |
| RθJL | 18 °C/W - Junction-to-lead thermal resistance; defines heat transfer path to PCB copper via lead frame |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode-indicated band; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Output terminal for forward conduction | Connected to output capacitor positive rail; polarity marked by molded band |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enhances long-term reliability and moisture resistance per J-STD-020 Level 1 MSL |
| Fast recovery time (≤150 ns) | Reduces switching loss and EMI in 50–200 kHz DC-DC converters |
| RoHS and halogen-free construction | Meets IPC-1752A environmental compliance for industrial and consumer end equipment |
| UL 94V-0 molding compound | Ensures flame-retardant behavior during overcurrent fault conditions |
Applications
| DC-DC Converter Output Rectification | Snubber Circuit Diode |
|---|---|
Use Scenario: Used as secondary-side rectifier in isolated flyback or forward converters delivering 3.3–12 V at ≤1.5 A. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC; operates at switching frequency with minimal reverse recovery loss. Use Value: 150 ns trr and 1.3 V VF jointly reduce total power loss versus standard recovery diodes, improving efficiency by ~1.2% at full load. | Use Scenario: Placed across MOSFET drain-source or transformer primary to clamp voltage spikes during turn-off. IC Role / Device Role / Timing Role: Fast clamping diode absorbing inductive energy; requires rapid turn-on and low stored charge to minimize voltage overshoot. Use Value: Low Qrr (implied by 150 ns trr) and 50 V VRRM provide precise clamping margin above nominal bus voltage without excessive derating. |
| Lighting Driver Secondary Rectification | General-Purpose AC/DC Adapter Rectifier |
Use Scenario: Rectifying low-voltage AC from LED driver transformers in commercial LED troffers and downlights. IC Role / Device Role / Timing Role: High-reliability output rectifier operating continuously at elevated ambient temperatures (up to 85 °C). Use Value: 175 °C TJMAX and J-STD-020 Level 1 MSL rating ensure stable operation in thermally constrained lighting enclosures. | Use Scenario: Input or output rectification in wall-adapters and open-frame AC/DC modules rated ≤15 W. IC Role / Device Role / Timing Role: General-purpose silicon rectifier replacing legacy 1N400x series where faster recovery and tighter VF tolerance are needed. Use Value: DO-214AC footprint compatibility with existing SMA layouts allows drop-in replacement without board rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06U | 1 A, 600 V, trr = 75 ns, VF = 1.15 V @ 1 A | Higher VRRM, lower IF, faster recovery - suited for higher-voltage, lower-current snubbers | Select when system requires >50 V blocking with tighter trr budget and can accept 33% lower current rating |
| ON Semi MUR120 | 1 A, 200 V, trr = 75 ns, VF = 0.92 V @ 1 A, DO-41 package | Lower VF, smaller current, through-hole package - better for prototyping but not SMT-compatible | Choose for bench validation or legacy through-hole designs; not suitable for automated DO-214AC assembly |
Compared with STTH1L06U and MUR120, RS2AAHR3G offers the highest continuous current (1.5 A) in DO-214AC, making it optimal for compact, high-density 50 V output rails where thermal management relies on lead-frame conduction rather than case dissipation.
Availability
RS2AAHR3G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, snubber circuits, LED lighting drivers, and general-purpose AC/DC adapters requiring stable component supply and JEDEC-compliant SMT packaging.
Supply support for RS2AAHR3G 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, specializing in power rectifiers, TVS devices, and MOSFETs since 1979.
The RS2xx series was designed specifically for cost-sensitive, high-volume power conversion applications demanding fast recovery, tight parameter distribution, and full RoHS/halogen-free compliance in standard SMT packages.
FAQ
What is the maximum junction temperature rating for RS2AAHR3G?
The RS2AAHR3G has a maximum junction temperature (TJMAX) of +175 °C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating supports operation in thermally demanding environments such as enclosed LED drivers or industrial power supplies, provided PCB layout maintains adequate thermal relief to the anode/cathode leads.
Is RS2AAHR3G compatible with lead-free reflow soldering processes?
Yes, RS2AAHR3G is qualified for lead-free reflow soldering per J-STD-002. Its matte tin-plated leads and DO-214AC package meet IPC/JEDEC standards for wetting balance and intermetallic formation. The device is rated MSL Level 1, meaning it may be stored indefinitely before assembly without baking.
Does RS2AAHR3G have a specified reverse recovery charge (Qrr) value?
No Qrr value is published in the Taiwan Semiconductor RS2AA–RS2MA datasheet. Only reverse recovery time (trr ≤ 150 ns) is specified under defined test conditions (IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A). Designers should use trr and measured VF/IR data for loss estimation in snubber or high-frequency rectifier simulations.
What is the marking code printed on the RS2AAHR3G device body?
The RS2AAHR3G is marked "RS2AA" on the device body, consistent with Taiwan Semiconductor's ordering code convention where "AA" denotes the 50 V VRRM variant. The full part number includes internal date/factory codes (e.g., "GYWF") per the marking diagram in the datasheet, but the functional identifier is RS2AA.
Can RS2AAHR3G replace a 1N4001 in a new design?
RS2AAHR3G can replace 1N4001 in SMT-based designs where space, thermal performance, and switching speed matter - but only if the circuit operates below 50 V reverse voltage. Unlike the 1N4001 (50 V VRRM, 30 µA IR, 300 ns trr), RS2AAHR3G offers lower VF (1.3 V vs. ~1.1 V typical but wider spread), tighter IR (5 µA max), and faster trr, improving efficiency in switching applications.
RS2AAHR3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS2AAHR3G FAQ
1.How can I place an order for RS2AAHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2AAHR3G 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 RS2AAHR3G reliable?
The price and inventory of RS2AAHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2AAHR3G is usually 5 days.
3.What payment methods are accepted for RS2AAHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2AAHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2AAHR3G?
RS2AAHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2AAHR3G 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 RS2AAHR3G?
For technical support, including RS2AAHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2AAHR3G requirements.
6.How does Aetrix verify that RS2AAHR3G is sourced from the original manufacturer or authorized distributors?
All RS2AAHR3G 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 RS2AAHR3G meets industry standards.
7.What is the process for return or replacement of RS2AAHR3G?
All RS2AAHR3G units undergo pre-shipment inspection (PSI). If there is an issue with RS2AAHR3G, 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 RS2AAHR3G part is unused and in its original packaging.
Return procedure for RS2AAHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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