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Diodes Incorporated RS3KB-13
- Part No.:
- RS3KB-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
RS3KB-13.pdf
- Description:
- DIODE GEN PURP 800V 3A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:3,730
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Product details
Overview
RS3KB-13 from Diodes Incorporated is a 800 V, 3.0 A surface-mount fast recovery rectifier in SMB (DO-214AA) package, featuring 250 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 and LED drivers.
For engineers reviewing the RS3KB-13 datasheet, RS3KB-13 pinout, RS3KB-13 application, or RS3KB-13 equivalent, key selection criteria include peak repetitive reverse voltage (800 V), average rectified current (3.0 A @ TT = 75°C), thermal resistance (25 K/W), recovery time (250 ns), and SMB package compatibility with automated SMT assembly.
Technical Context
This fast recovery rectifier uses glass-passivated silicon die to achieve controlled minority-carrier lifetime, enabling reduced switching losses in high-frequency rectification circuits operating up to 100 kHz. Its low Qrr and 250 ns trr support improved efficiency in flyback and boost PFC stages.
The device operates across –65°C to +150°C junction temperature range, with thermal resistance of 25 K/W (junction-to-terminal) measured on a 5.0 mm² copper pad. It sustains 100 A surge current (8.3 ms half-sine) and exhibits only 250 µA peak reverse current at 125°C under rated blocking voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rectification from 560 V RMS AC lines (e.g., 3-phase 400 V AC systems with transient margin) |
| IO @ TT=75°C | 3.0 A - continuous DC output current rating with thermal derating above 75°C terminal temperature |
| VFM @ IF=3.0A | 1.3 V - forward conduction loss of 3.9 W at full load, directly impacting thermal design and efficiency |
| trr | 250 ns - enables use in 100 kHz+ switching converters without excessive switching loss or EMI |
| IFSM (8.3 ms) | 100 A - withstands inrush currents during cold-start of offline SMPS without failure |
| RJT | 25 K/W - requires ≥5.0 mm² copper pad for thermal management per JEDEC test condition |
| IRM @ 125°C | 250 µA - low leakage preserves efficiency in high-temperature environments like enclosed LED drivers |
Pinout & Package
SMB (DO-214AA) plastic package with cathode band marking; molded UL 94V-0 material; solderable terminals per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | AC input node (positive half-cycle conduction path) | Connected to transformer secondary or bridge input; carries full load current during conduction |
| Cathode | DC output node (rectified positive rail) | Feeds bulk capacitor or downstream converter; marked by band/notch for polarity identification |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enhances reliability and moisture resistance in humid industrial environments without hermetic sealing |
| Fast recovery (250 ns) | Reduces reverse recovery charge (Qrr), minimizing switching loss and diode-induced ringing in high-frequency SMPS |
| 100 A surge rating | Supports robust cold-start behavior in offline power supplies with large input capacitors |
| UL 94V-0 plastic case | Meets flammability safety requirements for enclosed power equipment and lighting fixtures |
Applications
| Industrial AC/DC Power Supply | LED Driver Front-End Rectification |
|---|---|
Use Scenario: Single-phase rectification stage in 30–60 W industrial control power supplies with universal AC input (85–265 VAC). IC Role / Device Role / Timing Role: Fast recovery rectifier in bridge or single-diode configuration, converting AC line to unregulated DC bus. Use Value: 250 ns trr minimizes switching loss at 65 kHz operation; 800 V VRRM provides margin against 600 V transients on 400 VAC distribution lines. | Use Scenario: Input rectifier in isolated flyback LED drivers for streetlight and high-bay luminaires. IC Role / Device Role / Timing Role: Primary-side rectifier handling 50/60 Hz line frequency with occasional high-frequency noise coupling. Use Value: Low 1.3 V VFM reduces conduction loss at 3 A average current; SMB footprint enables compact PCB layout in thermally constrained enclosures. |
| UPS Input Stage | Motor Drive Auxiliary Power Supply |
Use Scenario: Rectification in offline auxiliary power supply for UPS system control logic and gate drivers. IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier feeding linear regulator or buck converter for 5 V/12 V bias rails. Use Value: 100 A IFSM ensures survival during battery-backup mode transitions with high inrush into bulk capacitance. | Use Scenario: DC bus rectification in auxiliary 24 V power supply for PLC I/O modules and motor driver logic. IC Role / Device Role / Timing Role: Fast recovery diode in voltage-doubler or bridge configuration supplying isolated control circuitry. Use Value: –65°C to +150°C operating range accommodates wide ambient conditions in factory automation cabinets. |
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 | 600 V VRRM, 3.0 A IO, 150 ns trr, SMA package | Limited to ≤420 V RMS AC input; smaller thermal pad area | Select when lower voltage rating suffices and board space is constrained |
| ON Semiconductor MUR380E | 800 V VRRM, 3.0 A IO, 150 ns trr, SMB package, higher VF (1.55 V @ 3 A) | Higher conduction loss; tighter trr tolerance for critical EMI-sensitive designs | Prefer where faster recovery dominates over forward loss, e.g., high-frequency PFC stages |
Compared with RS3KB-13, STTH3L06S offers faster recovery but insufficient voltage margin for 400 VAC systems, while MUR380E matches voltage rating and package but trades 0.25 V higher forward drop for 100 ns faster recovery - requiring thermal and EMI trade-off analysis.
Availability
RS3KB-13 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, LED driver front-end rectification, and UPS auxiliary power supplies requiring stable component supply and long-term manufacturing continuity.
Supply support for RS3KB-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, specializing in high-efficiency power management and signal integrity solutions for industrial, computing, and consumer markets.
The RS3x series targets cost-sensitive, high-volume rectification applications demanding fast recovery, robust surge capability, and standardized SMT packaging - optimized for automated manufacturing in power conversion subsystems.
FAQ
What is the maximum allowable junction temperature for RS3KB-13?
The absolute maximum junction temperature is +150°C, with continuous operation permitted from –65°C to +150°C. Derating begins at terminal temperatures above 75°C, per Figure 1 in the datasheet; sustained operation above 150°C risks permanent parametric shift or catastrophic failure.
Can RS3KB-13 replace a standard PN junction rectifier in an existing design?
Yes - RS3KB-13 can directly replace slower rectifiers (e.g., 1N4007) in most cases, provided the 800 V VRRM and 3.0 A IO ratings meet system requirements. Its faster 250 ns trr reduces switching loss but may increase EMI if snubbing is not reviewed; layout and filtering should be verified.
Is RS3KB-13 suitable for use in a full-wave bridge configuration?
Yes - RS3KB-13 is commonly used as one leg in discrete full-wave bridge rectifiers. Four units can form a complete bridge; ensure matching VFM and trr across all four devices for balanced thermal and dynamic performance in high-current applications.
Does RS3KB-13 require a heatsink in typical applications?
No external heatsink is required for ≤3.0 A continuous operation at TT ≤ 75°C with the specified 5.0 mm² copper pad. At higher currents or ambient temperatures, thermal simulation using RJT = 25 K/W and PCB copper area is recommended to confirm junction temperature remains below 150°C.
RS3KB-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):
- 800 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):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
RS3KB-13 FAQ
1.How can I place an order for RS3KB-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for RS3KB-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 RS3KB-13 reliable?
The price and inventory of RS3KB-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3KB-13 is usually 5 days.
3.What payment methods are accepted for RS3KB-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3KB-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS3KB-13?
RS3KB-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS3KB-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 RS3KB-13?
For technical support, including RS3KB-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3KB-13 requirements.
6.How does Aetrix verify that RS3KB-13 is sourced from the original manufacturer or authorized distributors?
All RS3KB-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 RS3KB-13 meets industry standards.
7.What is the process for return or replacement of RS3KB-13?
All RS3KB-13 units undergo pre-shipment inspection (PSI). If there is an issue with RS3KB-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 RS3KB-13 part is unused and in its original packaging.
Return procedure for RS3KB-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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