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Diodes Incorporated RS3AB-13
- Part No.:
- RS3AB-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
RS3AB-13.pdf
- Description:
- DIODE GEN PURP 50V 3A SMB
- Quantity:
- Payment:
- Shipping:
Inventory:2,202
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Product details
Overview
RS3AB-13 from Diodes Incorporated is a 50 V, 3.0 A surface-mount fast recovery rectifier in SMB (DO-214AA) package, featuring 150 ns reverse recovery time, 1.3 V forward voltage at 3.0 A, and 100 A non-repetitive surge capability - used in AC/DC front-end rectification for compact power adapters and DC-DC input stages.
For engineers reviewing the RS3AB-13 datasheet, RS3AB-13 pinout, RS3AB-13 application, or RS3AB-13 equivalent, key selection criteria include peak repetitive reverse voltage (50 V), average forward current (3.0 A @ TT = 75 °C), thermal resistance (25 K/W), fast recovery performance (150 ns), and SMB package compatibility with automated SMT assembly.
Technical Context
This device is a single-phase, silicon planar fast recovery rectifier with glass-passivated junction. It operates under resistive or inductive loads at 60 Hz, with derating required for capacitive loads (−20% IO). The 150 ns recovery time enables high-frequency switching efficiency in offline SMPS input stages.
Thermal design relies on PCB copper pad heat sinking (5.0 mm², 0.013 mm thick), delivering 25 K/W junction-to-terminal resistance. Reverse leakage remains ≤5.0 µA at 25 °C and rated blocking voltage, rising to ≤250 µA at 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 36–48 VAC input rectification. |
| IO | 3.0 A @ TT = 75 °C - Continuous average forward current with thermal management; defines usable output capacity in compact adapters. |
| VFM | 1.3 V @ IF = 3.0 A - Forward conduction loss at rated current; contributes ~3.9 W conduction loss per diode in full-wave bridge. |
| trr | 150 ns - Measured with IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables <500 kHz switching without excessive switching loss. |
| IFSM | 100 A - Peak surge rating (8.3 ms half-sine); withstands inrush into bulk capacitors during cold start. |
| RJT | 25 K/W - Junction-to-terminal thermal resistance with specified 5.0 mm² copper pad; determines temperature rise under steady-state load. |
Pinout & Package
SMB (DO-214AA) surface-mount package: cathode marked by band on body; anode and cathode terminals occupy opposite ends of molded plastic case; terminals are solder-plated for MIL-STD-202 compliant reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to AC source or transformer secondary; must handle full surge current and RMS ripple. |
| Cathode | Output terminal for forward conduction | Feeds bulk capacitor or downstream converter; polarity marking ensures correct orientation in bridge layout. |
Key Features
| Feature | Design Value |
|---|---|
| Fast recovery time | 150 ns - Reduces reverse recovery charge (Qrr), minimizing switching loss and EMI in high-frequency rectifiers. |
| Glass-passivated die | Enhanced moisture and contamination resistance - improves long-term reliability in humid or industrial environments. |
| UL 94V-0 plastic case | Flame-retardant housing - meets safety requirements for enclosed power supplies and Class II equipment. |
| Solderable terminals | MIL-STD-202, Method 208 compliant - ensures robust reflow joint integrity in high-volume SMT manufacturing. |
Applications
| USB-C Power Adapter Input Rectification | Industrial DC-DC Converter Input Stage |
|---|---|
Use Scenario: Rectifying 24–48 VAC from isolated transformer in 65 W USB-C PD adapter. IC Role / Device Role / Timing Role: Fast recovery rectifier in voltage-doubler or full-wave bridge configuration. Use Value: 150 ns trr minimizes switching loss at 100–200 kHz operation; 1.3 V VFM limits conduction loss to <4 W at full load. | Use Scenario: Input rectification for 24 V input, 48 V output isolated DC-DC module in PLC power supply. IC Role / Device Role / Timing Role: Primary-side unidirectional current path handling 3 A continuous and 100 A surge. Use Value: 100 A IFSM supports repeated cold-start surges; UL 94V-0 case satisfies industrial safety certifications. |
| LED Driver Bulk Capacitor Charging | Medical Equipment Auxiliary Power Supply |
Use Scenario: Charging bulk electrolytic capacitor after bridge rectification in constant-current LED driver. IC Role / Device Role / Timing Role: Fast-recovery diode in discrete bridge replacing integrated bridge ICs for cost-sensitive designs. Use Value: Low 5.0 µA IR at 25 °C prevents capacitor self-discharge; SMB footprint saves board space vs. through-hole alternatives. | Use Scenario: Isolated auxiliary 5 V/3.3 V supply in patient-connected diagnostic device. IC Role / Device Role / Timing Role: Safety-critical rectifier in double-insulated, low-leakage auxiliary winding circuit. Use Value: Glass-passivated die ensures stable IR over lifetime; −65 to +150 °C Tj range supports wide ambient operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MUR350E | Same VRRM (50 V), same IO (3.0 A), but trr = 35 ns (faster), VFM = 1.25 V (slightly lower) | Higher cost; preferred where ultra-low Qrr is critical in >300 kHz designs | Select when faster recovery outweighs minor cost increase and layout change is acceptable. |
| Vishay VS-3EJH05-M3/45 | Same SMB package, VRRM = 50 V, IO = 3.0 A, trr = 150 ns, but VFM = 1.45 V (higher), IR = 10 µA @ 25 °C (higher leakage) | Lower cost; suitable where leakage and conduction loss are less constrained | Select for cost-sensitive industrial controls where 150 ns trr and 5 µA IR meet spec. |
Compared with RS3AB-13, MUR350E offers superior speed and marginally lower conduction loss but at higher unit cost and different thermal profile, while VS-3EJH05-M3/45 trades higher VFM and IR for lower acquisition cost in thermally forgiving applications.
Availability
RS3AB-13 is available at Aetrix Electronics and suitable for USB-C power adapters, industrial DC-DC converters, and medical auxiliary power supplies requiring stable component supply, consistent SMB footprint, and verified fast-recovery performance.
Supply support for RS3AB-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for power management, signal integrity, and connectivity.
RS3AB-13 belongs to the RS3x fast recovery rectifier product line, designed specifically for high-efficiency, compact AC/DC and DC/DC power conversion where fast switching, low forward drop, and robust surge handling are essential.
FAQ
What is the maximum allowable junction temperature for RS3AB-13?
The absolute maximum junction temperature is +150 °C, with storage temperature matching this range (−65 to +150 °C). Operation above 125 °C increases reverse leakage exponentially; thermal design must maintain TJ ≤ 125 °C under worst-case load and ambient conditions using the specified 5.0 mm² copper pad.
Can RS3AB-13 be used in a full-wave bridge configuration?
Yes - RS3AB-13 is a single-diode device intended for use in discrete full-wave bridges. Four units can form a standard bridge rectifier; its 150 ns trr and 100 A IFSM make it suitable for high-frequency, high-surge applications where integrated bridges lack sufficient surge margin or thermal performance.
Is RS3AB-13 RoHS compliant and lead-free?
Yes - RS3AB-13 is RoHS compliant and lead-free, with halogen-free molding compound and lead-free matte tin-plated terminals. It meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 and is compatible with standard Pb-free reflow profiles (peak 260 °C).
How does capacitive loading affect RS3AB-13's current rating?
Capacitive loading requires a 20% reduction in average forward current (IO) rating - i.e., max 2.4 A instead of 3.0 A - due to increased peak current stress during capacitor charging. This derating is specified in the datasheet and applies regardless of thermal conditions or heatsinking.
RS3AB-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):
- 50 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 @ 50 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
- Operating Temperature - Junction:
- -65°C ~ 150°C
RS3AB-13 FAQ
1.How can I place an order for RS3AB-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for RS3AB-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 RS3AB-13 reliable?
The price and inventory of RS3AB-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3AB-13 is usually 5 days.
3.What payment methods are accepted for RS3AB-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3AB-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS3AB-13?
RS3AB-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS3AB-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 RS3AB-13?
For technical support, including RS3AB-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3AB-13 requirements.
6.How does Aetrix verify that RS3AB-13 is sourced from the original manufacturer or authorized distributors?
All RS3AB-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 RS3AB-13 meets industry standards.
7.What is the process for return or replacement of RS3AB-13?
All RS3AB-13 units undergo pre-shipment inspection (PSI). If there is an issue with RS3AB-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 RS3AB-13 part is unused and in its original packaging.
Return procedure for RS3AB-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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