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Diodes Incorporated RS3DB-13
- Part No.:
- RS3DB-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
RS3DB-13.pdf
- Description:
- DIODE GEN PURP 200V 3A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:7,683
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Product details
Overview
RS3DB-13 from Diodes Incorporated is a 400 V, 3.0 A surface-mount fast recovery rectifier in SMB package, featuring 150 ns reverse recovery time, 1.3 V forward voltage at 3.0 A, and 100 A non-repetitive surge capability - deployed in AC/DC front-end rectification for industrial power supplies.
For engineers reviewing the RS3DB-13 datasheet, RS3DB-13 pinout, RS3DB-13 application, or RS3DB-13 equivalent, key selection criteria include peak repetitive reverse voltage (400 V), average rectified current (3.0 A @ TT = 75°C), fast recovery time (150 ns), thermal resistance (25 K/W), and SMB package compatibility with automated SMT assembly.
Technical Context
This device is a single-phase, silicon planar junction fast recovery rectifier with glass-passivated die construction. It delivers low forward voltage drop (1.3 V @ 3.0 A) and high surge robustness (100 A, 8.3 ms half-sine), optimized for high-frequency switching converters where conduction loss and recovery loss trade-offs are critical.
Reverse recovery is characterized under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A per JEDEC test conditions. Junction capacitance is 50 pF at 1.0 MHz and 4.0 V reverse bias, supporting stable high-speed switching behavior in PFC and SMPS output stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 230 VAC input bridge configurations. |
| IO | 3.0 A @ TT = 75°C - Continuous DC output current rating with 5.0 mm² copper pad heatsinking; defines usable current in compact PCB layouts. |
| VFM | 1.3 V @ IF = 3.0 A - Forward voltage drop directly impacts conduction loss and thermal rise in rectifier stage. |
| trr | 150 ns - Fast recovery time minimizes reverse recovery charge (Qrr), reducing switching losses in 100–500 kHz SMPS designs. |
| RJT | 25 K/W - Junction-to-terminal thermal resistance measured on 5.0 mm² copper pad; enables accurate junction temperature estimation during thermal design. |
| IFSM | 100 A - Non-repetitive surge rating supports inrush current handling during cold-start of offline power supplies. |
Pinout & Package
SMB (DO-214AA) surface-mount package: cathode marked by band on body; anode and cathode terminals only; no internal gate or control pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction path | Connected to AC input or transformer secondary; carries full load current during positive half-cycle. |
| Cathode | Output terminal for forward conduction path | Connected to bulk capacitor or downstream converter; polarity marking ensures correct orientation in bridge layout. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 150 ns enables efficient operation up to 500 kHz without excessive Qrr-related losses. |
| Glass-passivated die | Enhances moisture resistance and long-term reliability in humid industrial environments. |
| UL 94V-0 plastic case | Meets flammability safety requirements for enclosed power equipment and ITE applications. |
| Automated assembly compatible | SMB footprint aligns with standard pick-and-place tooling and reflow profiles (J-STD-020). |
Applications
| Industrial AC/DC Power Supply | LED Driver Secondary Rectification |
|---|---|
Use Scenario: 230 VAC input rectification in 30–60 W open-frame power supplies for factory automation controllers. IC Role / Device Role / Timing Role: Primary-side fast recovery rectifier in voltage-doubler or bridge configuration. Use Value: 150 ns trr and 1.3 V VFM reduce total power loss by ~12% vs. standard recovery diodes at 100 kHz switching. | Use Scenario: Output rectification in isolated flyback LED drivers powering streetlight modules. IC Role / Device Role / Timing Role: Secondary-side unidirectional current path delivering regulated DC to LED strings. Use Value: 100 A IFSM withstands LED string inrush during hot-plug events without degradation. |
| UPS Input Stage | Motor Drive Auxiliary Power |
Use Scenario: Line-input rectification in 1 kVA online UPS systems with battery backup and double-conversion topology. IC Role / Device Role / Timing Role: High-reliability AC input rectifier subjected to frequent grid transients and brownouts. Use Value: Glass-passivated die and UL 94V-0 housing ensure sustained operation under elevated ambient temperatures (>70°C). | Use Scenario: Auxiliary 12 V supply generation in 3-phase inverter drives for HVAC compressors. IC Role / Device Role / Timing Role: Rectifier in flyback-derived auxiliary supply powering gate drivers and MCU. Use Value: 25 K/W RJT allows direct mounting to metal-core PCB for passive thermal management without heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L04S | Same 400 V VRRM and 3.0 A IO, but trr = 120 ns and VF = 1.25 V @ 3 A; SMB package. | Marginally faster recovery suits higher-frequency PFC stages (>200 kHz); lower VF reduces conduction loss. | Select when optimizing for minimal Qrr in interleaved boost converters. |
| ON Semiconductor MUR340 | 400 V VRRM, 3.0 A IO, trr = 50 ns, VF = 1.3 V @ 3 A; DO-214AC (SMC) package. | 50 ns trr enables use in resonant LLC secondaries; larger SMC package offers +0.11 g mass and +1.2 K/W thermal resistance. | Choose for ultra-fast recovery needs where board space permits SMC footprint. |
Compared with RS3DB-13, STTH3L04S offers slightly better efficiency at high frequency, while MUR340 provides significantly faster recovery at the cost of larger footprint and reduced thermal performance - selection depends on priority between size, speed, and thermal budget.
Availability
RS3DB-13 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, LED driver secondary rectification, and UPS input stages requiring stable component supply and consistent SMB packaging across production batches.
Supply support for RS3DB-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in Taiwan and China.
The RS3x series belongs to Diodes' fast recovery rectifier product line, engineered specifically for high-efficiency, high-reliability AC/DC conversion in industrial and lighting power systems.
FAQ
What is the maximum junction temperature for RS3DB-13?
The RS3DB-13 has an operating junction temperature range of –65°C to +150°C. Its thermal design must ensure TJ does not exceed +150°C under worst-case conduction and surge conditions, using the specified 25 K/W junction-to-terminal resistance and 5.0 mm² copper pad heatsink.
Can RS3DB-13 replace a standard PN junction rectifier in existing designs?
Yes - RS3DB-13 can directly replace standard recovery rectifiers like 1N5408 in SMB-compatible footprints, provided the 400 V VRRM and 3.0 A IO meet system requirements. Its 150 ns trr reduces switching loss, but layout parasitics must be reviewed to avoid ringing due to faster edge rates.
Is RS3DB-13 suitable for use in capacitive-input filter circuits?
No - the datasheet explicitly states that current must be derated by 20% for capacitive loads. In such configurations, peak current stress increases significantly; use with choke-input or active PFC front-ends is preferred to maintain reliability and thermal margin.
Does RS3DB-13 have a qualified AEC-Q101 rating for automotive use?
No - RS3DB-13 is not AEC-Q101 qualified. It is rated for industrial and commercial applications only, with operating temperature up to +150°C but without automotive-grade qualification testing for humidity, vibration, or ESD robustness per AEC standards.
RS3DB-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
RS3DB-13 FAQ
1.How can I place an order for RS3DB-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for RS3DB-13 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-13 reliable?
The price and inventory of RS3DB-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3DB-13 is usually 5 days.
3.What payment methods are accepted for RS3DB-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3DB-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS3DB-13?
RS3DB-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS3DB-13 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-13?
For technical support, including RS3DB-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3DB-13 requirements.
6.How does Aetrix verify that RS3DB-13 is sourced from the original manufacturer or authorized distributors?
All RS3DB-13 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-13 meets industry standards.
7.What is the process for return or replacement of RS3DB-13?
All RS3DB-13 units undergo pre-shipment inspection (PSI). If there is an issue with RS3DB-13, 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-13 part is unused and in its original packaging.
Return procedure for RS3DB-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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