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Taiwan Semiconductor Corporation RS3DB-T
- Part No.:
- RS3DB-T
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
RS3DB-T.pdf
- Description:
- 150NS, 3A, 200V, FAST RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
RS3DB-T from Taiwan Semiconductor is a 3A, 200V fast recovery surface-mount rectifier in DO-214AA (SMB) package, featuring 150 ns reverse recovery time, 1.02 V forward voltage at 3.0A/25°C, and 80A surge current capability. It serves as a primary AC/DC input rectifier in compact switching power supplies.
For engineers reviewing the RS3DB-T datasheet, RS3DB-T pinout, RS3DB-T application, or RS3DB-T equivalent, key selection criteria include VRRM=200V, trr≤150ns, VF≤1.02V @3A, thermal resistance RθJA=78°C/W, and SMB package compatibility with automated SMT assembly.
Technical Context
This single-die fast recovery rectifier uses glass-passivated junction technology to achieve low reverse leakage (≤5 µA @25°C) and stable operation up to 150°C junction temperature. Its 200V repetitive peak reverse voltage and 150 ns recovery time support high-frequency switching topologies.
The device exhibits forward voltage drop of 0.87 V @3.0A/125°C and junction capacitance of 50 pF @4V, enabling efficient performance in DC-DC converters and SMPS where conduction loss and switching loss trade-offs are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage for reliable operation in 115VAC input rectification |
| IF | 3 A - Continuous average forward current rating at TC=75°C, defining steady-state power handling |
| trr | 150 ns - Reverse recovery time at IF=0.5A/IR=1.0A, limiting switching losses in 100–500 kHz converters |
| VF @3A/25°C | 1.02 V - Forward voltage drop determining conduction loss and thermal rise under full load |
| RθJA | 78 °C/W - Junction-to-ambient thermal resistance on standard 10mm×10mm PCB copper pad, guiding heatsinking needs |
| IR @25°C | 5 µA - Max reverse leakage current, ensuring low standby power in offline PSUs |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 1 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to AC input or transformer secondary; requires adequate trace width for 3A continuous current |
| Cathode | Forward current exit / polarity indicator | Marked by visible band; ties to bulk capacitor positive rail; defines unidirectional conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables ≤5 µA reverse leakage at 25°C and robust moisture resistance per J-STD-020 Level 1 |
| Fast recovery (trr ≤150 ns) | Reduces switching loss and EMI in high-frequency SMPS versus standard rectifiers (e.g., 1N4007) |
| DO-214AA (SMB) package | Supports automated pick-and-place assembly and provides 0.090g mass for consistent reflow profiling |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally constrained industrial applications |
Applications
| AC/DC Front-End Rectification | DC-DC Converter Input Stage |
|---|---|
Use Scenario: Rectifying 90–264VAC input in compact open-frame AC/DC adapters. IC Role / Device Role / Timing Role: Primary unidirectional current switch converting AC line to pulsating DC before bulk capacitor filtering. Use Value: 200V VRRM safely handles 264VAC peak (≈373V), while 150 ns trr minimizes switching node ringing in 65–130 kHz flyback designs. | Use Scenario: Input rectification in isolated 48V-to-12V telecom DC-DC modules. IC Role / Device Role / Timing Role: High-efficiency freewheeling path during synchronous rectifier dead-time intervals. Use Value: 1.02 V VF @3A reduces conduction loss vs. Schottky alternatives above 100V, improving overall efficiency at full load. |
| Switching Inverter Auxiliary Supply | Industrial Control Power Rail |
Use Scenario: Generating auxiliary +15V bias supply from inverter DC bus in motor drives. IC Role / Device Role / Timing Role: Fast-recovery rectifier in flyback or buck-derived auxiliary converter. Use Value: 80A IFSM withstands startup surges; 150°C TJ max ensures reliability in enclosed drive enclosures with ambient >85°C. | Use Scenario: Providing isolated 5V/3.3V logic supply in PLC I/O modules. IC Role / Device Role / Timing Role: Input-stage rectifier feeding regulated linear or switching post-regulator. Use Value: Low IR (≤5 µA) prevents capacitor discharge drift in always-on control circuits; SMB footprint fits dense PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | 600V VRRM, 1.15V VF @3A/25°C, 50 ns trr, same DO-214AA package | Higher voltage rating suits 230VAC systems; faster recovery enables >300 kHz operation | Select when higher VRRM margin or lower trr is required; verify layout compatibility with identical SMB footprint |
| ON Semi MUR320 | 200V VRRM, 1.3V VF @3A/25°C, 35 ns trr, DO-214AA package | Ultra-fast recovery reduces EMI but increases conduction loss; optimized for high-frequency SMPS | Prefer for noise-sensitive applications where trr <50 ns is mandatory; accept higher VF penalty for reduced switching loss |
Compared with STTH3L06S and MUR320, the RS3DB-T offers the lowest VF among 200V-class fast rectifiers (1.02 V), making it optimal for thermally constrained 3A applications where conduction loss dominates, while maintaining proven manufacturability in high-volume SMT lines.
Availability
RS3DB-T is available at Aetrix Electronics and suitable for AC/DC front-end rectification, DC-DC converter input stages, and industrial control power rails requiring stable component supply and long-term production continuity.
Supply support for RS3DB-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 power electronics markets since 1979.
The RS3DB-T belongs to TSC's RS3x series of fast recovery rectifiers designed specifically for cost-sensitive, high-volume switching power supplies demanding tight VF consistency, low trr, and robust thermal performance in SMB packaging.
FAQ
What is the maximum junction temperature rating for RS3DB-T?
The RS3DB-T has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This allows reliable operation in enclosed industrial environments where ambient temperatures exceed 85°C, provided thermal design maintains junction temperature below this limit using the specified RθJA=78°C/W on a 10mm×10mm Cu pad. The RS3DB-T must not be operated beyond this TJ MAX value under any condition.
Is RS3DB-T compatible with lead-free reflow soldering processes?
Yes, RS3DB-T features matte tin-plated leads that meet J-STD-002 solderability requirements and are fully compatible with standard lead-free reflow profiles (peak temperature up to 260°C). Its DO-214AA (SMB) package is rated for moisture sensitivity level 1 per J-STD-020, eliminating bake requirements prior to assembly. The RS3DB-T has been validated for use in automated SMT lines processing RS3DB-T without solder joint defects.
What does the 'D' in RS3DB-T signify?
The 'D' in RS3DB-T denotes the 200V VRRM rating within the RS3x-T family, as explicitly defined in the ordering information: "x" defines voltage from 200V (RS3DB-T) to 1000V (RS3MB-T). This is confirmed by the Absolute Maximum Ratings table showing VRRM = 200 V for RS3DB-T, and the marking code printed on the device body as "RS3DB". No other interpretation of the 'D' is supported by Taiwan Semiconductor documentation.
How does RS3DB-T compare to standard recovery rectifiers like 1N4007?
RS3DB-T delivers significantly faster switching with trr ≤150 ns versus 1N4007's 30 µs recovery, reducing switching losses and EMI in SMPS above 20 kHz. Its 1.02 V VF @3A is comparable to 1N4007 but achieved with superior thermal performance (RθJA=78°C/W vs ~100°C/W) and tighter parameter distribution. RS3DB-T is not a drop-in replacement due to different electrical behavior-designers must validate snubber networks and layout when upgrading from 1N4007 to RS3DB-T.
What is the reverse leakage current specification for RS3DB-T at elevated temperature?
At TJ = 125°C, RS3DB-T exhibits a maximum reverse leakage current (IR) of 150 µA under rated VRRM, as specified in the Electrical Specifications table. This value is measured using a 30 ms pulse test and reflects real-world performance in hot-running power supplies. The RS3DB-T maintains low leakage across its full operating range (−55°C to +150°C), supporting stable operation in automotive and industrial environments where thermal stress is significant.
RS3DB-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS3DB-T FAQ
1.How can I place an order for RS3DB-T through Aetrix?
Please submit a Request for Quotation (RFQ) for RS3DB-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 RS3DB-T reliable?
The price and inventory of RS3DB-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3DB-T is usually 5 days.
3.What payment methods are accepted for RS3DB-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3DB-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS3DB-T?
RS3DB-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS3DB-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 RS3DB-T?
For technical support, including RS3DB-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3DB-T requirements.
6.How does Aetrix verify that RS3DB-T is sourced from the original manufacturer or authorized distributors?
All RS3DB-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 RS3DB-T meets industry standards.
7.What is the process for return or replacement of RS3DB-T?
All RS3DB-T units undergo pre-shipment inspection (PSI). If there is an issue with RS3DB-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 RS3DB-T part is unused and in its original packaging.
Return procedure for RS3DB-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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