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Diodes Incorporated RS3B-13
- Part No.:
- RS3B-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- -
- Datasheet:
-
RS3B-13.pdf
- Description:
- DIODE GEN PURP 100V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:514
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Product details
Overview
RS3B-13 from Diodes Incorporated is a 100V peak repetitive reverse voltage, 3.0A average rectified output current, fast recovery surface-mount rectifier in SMB package with 150ns maximum reverse recovery time, 1.3V forward voltage at 3.0A, and glass-passivated die construction - used in AC/DC front-end rectification for offline switch-mode power supplies.
For engineers reviewing the RS3B-13 datasheet, RS3B-13 pinout, RS3B-13 application, or RS3B-13 equivalent, key selection criteria include VRRM rating, trr performance under 60Hz/switching conditions, thermal resistance (RJT = 25 K/W), and SMB footprint compatibility with automated SMT assembly.
Technical Context
This device operates as a single-phase, half-wave silicon rectifier optimized for high-efficiency switching power conversion. Its fast recovery time (trr ≤ 150 ns) minimizes switching losses during commutation, while low forward voltage (VFM = 1.3 V @ 3.0 A) reduces conduction loss at rated current.
The glass-passivated junction ensures stable reverse leakage (IRM = 5.0 µA @ 25°C, 250 µA @ 125°C) and robust surge capability (IFSM = 100 A, 8.3 ms half-sine). Thermal design relies on PCB copper pad (5.0 mm², 0.013 mm thick) to achieve RJT = 25 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum non-repetitive reverse voltage the device blocks without breakdown; defines safe operating range in 115/230VAC input stages. |
| IO @ TT=75°C | 3.0 A - Continuous DC output current achievable with terminal temperature held at 75°C; derated above this temperature per Fig. 1. |
| VFM @ IF=3.0A | 1.3 V - Forward voltage drop at full rated current; directly impacts conduction loss (Pcond ≈ 3.9 W) and thermal design margin. |
| trr | 150 ns - Maximum reverse recovery time under IF=0.5A, IR=1.0A, Irr=0.25A; critical for EMI control and efficiency in 50–500 kHz SMPS. |
| RJT | 25 K/W - Junction-to-terminal thermal resistance with specified 5.0 mm² copper pad; enables direct estimation of junction temperature rise (ΔTj = Pd × 25). |
| IFSM | 100 A - Non-repetitive surge current rating (8.3 ms, JEDEC method); supports cold-start inrush and transient line surges. |
Pinout & Package
SMB (DO-214AA) surface-mount package: cathode marked by band on body; anode and cathode are the only two terminals; designed for reflow soldering per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | AC input node connection | Accepts incoming alternating waveform; polarity determines half-wave conduction direction. |
| Cathode | DC output node connection | Delivers rectified unidirectional current to bulk capacitor or downstream converter; marked by band. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enables stable IR performance across -65°C to +150°C and improves humidity/moisture resistance vs. epoxy-passivated alternatives. |
| Fast recovery (trr ≤ 150 ns) | Reduces reverse recovery charge (Qrr) and associated switching loss in high-frequency SMPS, improving overall efficiency >90%. |
| Low VF (1.3 V @ 3.0 A) | Lowers steady-state power dissipation versus standard recovery rectifiers (e.g., 1N4007 VF ≈ 1.1 V @ 1A but not rated for 3A continuous). |
| UL 94V-0 molded plastic case | Meets flammability safety requirements for enclosed industrial and consumer power supplies without additional potting or shielding. |
Applications
| AC/DC Adapter Input Stage | Industrial PLC Power Supply |
|---|---|
Use Scenario: Rectifying 50/60 Hz AC mains into DC bus prior to PFC or flyback controller in compact wall adapters. IC Role / Device Role / Timing Role: Primary-side uncontrolled rectifier; conducts only during positive half-cycles with minimal reverse conduction delay. Use Value: 150 ns trr limits ringing and EMI generation; 100V VRRM safely handles 115VAC + 30% line surge. | Use Scenario: Front-end rectification in DIN-rail mounted 24V/48V DC power modules powering programmable logic controllers. IC Role / Device Role / Timing Role: High-reliability discrete rectifier handling continuous 3A load with ambient temperatures up to 70°C. Use Value: Glass-passivated junction maintains <5 µA IR at 25°C and <250 µA at 125°C, ensuring long-term stability in sealed enclosures. |
| LED Driver Bulk Rectification | UPS Battery Charger Input Stage |
Use Scenario: Converting AC line to DC for constant-current LED driver ICs in commercial lighting fixtures. IC Role / Device Role / Timing Role: Off-line rectifier feeding electrolytic bulk capacitor; must withstand repeated 100A surge events during capacitor pre-charge. Use Value: IFSM = 100 A (JEDEC) supports repeated cold-start surges without degradation; SMB footprint fits tight board spacing. | Use Scenario: Rectifying AC utility input in online UPS systems where battery charging circuitry requires stable DC input. IC Role / Device Role / Timing Role: Main rectifier in dual-path AC input stage; operates continuously under partial load with elevated ambient temperature. Use Value: RJT = 25 K/W allows thermal management using standard 5 mm² copper pour, eliminating need for external heatsinks. |
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 | VRRM = 600 V, trr = 35 ns, IO = 3.0 A, SMA package | Higher voltage rating and faster recovery, but larger forward voltage (1.7 V @ 3A) and different footprint | Select when higher blocking voltage or lower Qrr is required; verify PCB land pattern compatibility. |
| ON Semi MUR320 | VRRM = 200 V, trr = 35 ns, IO = 3.0 A, DO-214AC (SMA) package | Faster recovery than RS3B-13 but lower VRRM; same current rating and thermal resistance | Prefer for 230VAC-input designs needing tighter trr control; requires SMA footprint redesign. |
Compared with RS3B-13, STTH3L06S offers superior voltage margin and speed but sacrifices conduction efficiency and package compatibility; MUR320 matches current rating and thermal behavior while enabling faster switching at moderate voltage stress - both require layout revision due to SMA vs. SMB footprint.
Availability
RS3B-13 is available at Aetrix Electronics and suitable for offline AC/DC converters, industrial power modules, LED driver front-ends, and UPS battery charger circuits requiring stable component supply and consistent SMB packaging.
Supply support for RS3B-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 and manufacturing operations across Asia and the US.
RS3B-13 belongs to the RS3x fast recovery rectifier product line, engineered specifically for high-efficiency, space-constrained AC/DC power conversion where low VF, controlled trr, and SMB manufacturability are prioritized over ultra-high voltage or ultra-low Qrr.
FAQ
What is the maximum junction temperature for RS3B-13?
The RS3B-13 has an operating junction temperature range of –65°C to +150°C. Its absolute maximum Tj is 150°C, and sustained operation above this limit risks irreversible parametric shift or bond wire failure. Derating curves in Fig. 1 assume terminal temperature (TT) of 75°C corresponds to ~125°C junction under typical PCB thermal conditions.
Can RS3B-13 be used in full-wave bridge configurations?
Yes - RS3B-13 is a single diode and can be used in discrete full-wave bridge designs (e.g., four units in KBPC layout). However, it is not a monolithic bridge; each unit must be individually placed and routed. For integrated solutions, consider Diodes Inc.'s DB107S or GBU6K, which offer matched characteristics and thermal coupling.
Is RS3B-13 compliant with lead-free and RoHS requirements?
Yes - RS3B-13 is manufactured with lead-free terminations and complies with EU RoHS Directive 2011/65/EU and REACH SVHC regulations. The device meets J-STD-020 moisture sensitivity level (MSL) 1 and is qualified for Pb-free reflow soldering profiles up to 260°C peak.
How does capacitive loading affect RS3B-13's current rating?
Per datasheet note, average forward current must be derated by 20% under capacitive load conditions (e.g., bulk capacitor input without PFC). This accounts for high peak currents during capacitor charging, which increase RMS heating beyond resistive/inductive load assumptions - resulting in effective IO limit of 2.4 A for such topologies.
RS3B-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Technology:
- -
- Voltage - DC Reverse (Vr) (Max):
- -
- Current - Average Rectified (Io):
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- -
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
RS3B-13 FAQ
1.How can I place an order for RS3B-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for RS3B-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 RS3B-13 reliable?
The price and inventory of RS3B-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3B-13 is usually 5 days.
3.What payment methods are accepted for RS3B-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3B-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS3B-13?
RS3B-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS3B-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 RS3B-13?
For technical support, including RS3B-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3B-13 requirements.
6.How does Aetrix verify that RS3B-13 is sourced from the original manufacturer or authorized distributors?
All RS3B-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 RS3B-13 meets industry standards.
7.What is the process for return or replacement of RS3B-13?
All RS3B-13 units undergo pre-shipment inspection (PSI). If there is an issue with RS3B-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 RS3B-13 part is unused and in its original packaging.
Return procedure for RS3B-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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