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Diodes Incorporated RDBF32-13
- Part No.:
- RDBF32-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Flat Leads
- Datasheet:
-
RDBF32-13.pdf
- Description:
- BRIDGE RECT 1PHASE 200V 3A DBF
- Quantity:
- Payment:
- Shipping:
Inventory:7,833
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Product details
Overview
RDBF32-13 from Diodes Incorporated is a 200 V peak repetitive reverse voltage, 3.0 A average rectified output current surface-mount fast bridge rectifier in DBF package, with 1.3 V max forward voltage at 2.5 A and 150 ns reverse recovery time, used for AC–DC full-wave rectification in LED lighting power supplies and compact AC adapters.
For engineers reviewing the RDBF32-13 datasheet, RDBF32-13 pinout, RDBF32-13 application, or RDBF32-13 equivalent, key selection criteria include rated blocking voltage (200 V), thermal resistance (15 °C/W junction-to-ambient), surge rating (100 A IFSM), low leakage (5 µA @ 25°C), and RoHS-compliant lead-free plating for SMT reliability.
Technical Context
This device integrates four fast-switching epitaxial planar diodes in a single-phase bridge configuration with glass-passivated junctions. It delivers 3.0 A average output current at TC = +120°C and supports capacitive-load applications with 20% derating.
Designed for high-efficiency switching-mode power supplies, it features 150 ns reverse recovery time and 45 pF typical capacitance per element at 1 MHz/4 V reverse bias - enabling reduced switching losses and EMI in 50–100 kHz SMPS topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; sets safe operating margin for 170 VAC input rectification. |
| IO | 3.0 A - Average rectified output current at TC = +120°C; defines continuous DC output capability in thermally constrained layouts. |
| VFM | 1.3 V @ 2.5 A - Forward voltage drop per diode leg; determines conduction loss (3.25 W total bridge loss at 2.5 A). |
| tRR | 150 ns - Reverse recovery time; enables efficient operation up to ~100 kHz without excessive switching loss or ringing. |
| IR | 5 µA @ 25°C - Peak reverse leakage current; ensures minimal standby power loss in offline converters. |
| IFSM | 100 A - Non-repetitive surge current rating; withstands cold-start inrush in 120 VAC/60 Hz systems. |
| RθJA | 15 °C/W - Junction-to-ambient thermal resistance on standard FR-4 PCB; guides heatsinking requirements for 3 A continuous load. |
Pinout & Package
Package: DBF - 4-terminal surface-mount molded plastic package (UL 94V-0), 6.45–6.85 mm × 8.50–8.90 mm footprint, 1.30–1.50 mm height, 0.02 g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC Input Terminal 1 | One of two alternating-current input nodes; connects to live/neutral line in full-wave bridge configuration. |
| ~AC2 | AC Input Terminal 2 | Second AC input node; polarity-insensitive - interchangeable with ~AC1 for universal AC input orientation. |
| +DC | Positive DC Output | Anode of output leg; delivers rectified positive voltage to bulk capacitor or downstream regulator. |
| –DC | Negative DC Output / Common Cathode | Cathode of output leg; serves as circuit ground reference and return path for DC load current. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die construction | Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments. |
| Fast recovery time (150 ns) | Reduces reverse recovery charge (Qrr) and associated switching losses in high-frequency SMPS designs. |
| Low forward voltage (1.3 V) | Lowers conduction loss by ~15% vs. standard silicon bridges at 2.5 A, improving efficiency in space-constrained adapters. |
| 100 A surge rating | Supports repeated cold-start events without degradation - critical for battery charger and LED driver field reliability. |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive change-control requirements; compatible with Pb-free reflow profiles (J-STD-020). |
Applications
| LED Lighting Power Supply | Compact AC Adapter |
|---|---|
Use Scenario: Off-line constant-current LED driver for commercial downlights operating from 90–264 VAC input. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC line to pulsating DC prior to PFC and buck converter stages. Use Value: 150 ns tRR minimizes high-frequency noise coupling into sensitive current-sense circuitry; 5 µA IR prevents standby power exceedance in Energy Star-compliant designs. | Use Scenario: 12 V/2.5 A wall-mounted adapter powering VoIP phones or IoT gateways. IC Role / Device Role / Timing Role: Primary-side AC–DC rectification stage feeding bulk capacitor and primary controller IC. Use Value: 3.0 A IO rating allows 25% design margin over nominal load; DBF package enables < 100 mm² board area allocation. |
| Home Appliance Control Board | Office Equipment SMPS |
Use Scenario: Auxiliary power supply on washing machine main control board, deriving 5 V/3.3 V logic rails. IC Role / Device Role / Timing Role: Input rectifier for isolated flyback converter powering MCU, display, and sensor interfaces. Use Value: 100 A IFSM withstands motor startup surges without latch-up; 15 °C/W RθJA enables natural convection cooling without heatsink. | Use Scenario: Internal power supply in multifunction printers handling intermittent high-power laser and fuser loads. IC Role / Device Role / Timing Role: Bridge rectifier in dual-output forward converter delivering 24 V (motor) and 5 V (logic) rails. Use Value: Low 45 pF capacitance per leg reduces EMI filter component count; RoHS/Green compliance satisfies global regulatory submissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSB30TM | Successor part: same DBF package, 3.0 A IO, but 300 V VRRM and 125 ns tRR; higher surge rating (120 A). | Direct replacement where 200 V margin is insufficient; preferred for 230 VAC-only designs requiring extended lifetime. | Select MSB30TM for new designs - RDBF32-13 is obsolete and no longer recommended for production. |
| GBU4K | Through-hole GBU package; 4 A IO, 800 V VRRM, 1.1 V VFM, but 500 ns tRR and 35 °C/W RθJA. | Suitable only where board space permits larger footprint and thermal management includes heatsinking. | Choose only if legacy through-hole assembly remains; not drop-in due to package and thermal mismatch. |
Compared with RDBF32-13, MSB30TM offers improved voltage margin and faster recovery for next-gen designs, while GBU4K trades surface-mount convenience for higher voltage headroom and lower forward drop - but requires mechanical redesign and thermal reassessment.
Availability
RDBF32-13 is available at Aetrix Electronics and suitable for LED lighting power supplies, compact AC adapters, and home appliance control boards requiring stable component supply during legacy product support and end-of-life transition phases.
Supply support for RDBF32-13 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, serving industrial, computing, consumer, and communications markets with high-reliability components.
RDBF32-13 belongs to the RDBF3x fast bridge rectifier family, designed specifically for space-constrained, high-efficiency AC–DC conversion in consumer and industrial power supplies - emphasizing low profile, SMT compatibility, and robust surge performance.
FAQ
Is RDBF32-13 still in active production?
No - Diodes Incorporated has officially discontinued RDBF32-13 and marked it obsolete per DS39412 Rev. 4. It is superseded by MSB30TM. Aetrix Electronics maintains limited legacy stock for last-time buy and repair fulfillment, with full traceability and documentation.
What is the maximum operating temperature for RDBF32-13?
The RDBF32-13 is rated for junction temperatures from –55°C to +150°C. Its 3.0 A average current rating is specified at TC = +120°C, meaning case temperature must be maintained at or below that level under continuous load using appropriate PCB copper area or thermal vias.
Can RDBF32-13 be used in automotive applications?
RDBF32-13 itself is not AEC-Q200 qualified. While its operating temperature range (–55°C to +150°C) meets automotive ambient requirements, Diodes states that automotive-grade variants require explicit qualification - contact Diodes or Aetrix for PPAP-capable, IATF 16949-manufactured alternatives like MSB30TM-A.
What does the marking "RDBF32" on the device body indicate?
The top-side marking "RDBF32" identifies the device type and voltage grade (200 V VRRM). The full date code follows (e.g., "5A12" = 2025, January, 12th day). No internal lot or wafer traceability is encoded in the visible marking per DS39412.
RDBF32-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SMD, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 200 V
- Current - Average Rectified (Io):
- 3 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2.5 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DBF
RDBF32-13 FAQ
1.How can I place an order for RDBF32-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for RDBF32-13 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 RDBF32-13 reliable?
The price and inventory of RDBF32-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RDBF32-13 is usually 5 days.
3.What payment methods are accepted for RDBF32-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RDBF32-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RDBF32-13?
RDBF32-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RDBF32-13 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 RDBF32-13?
For technical support, including RDBF32-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RDBF32-13 requirements.
6.How does Aetrix verify that RDBF32-13 is sourced from the original manufacturer or authorized distributors?
All RDBF32-13 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 RDBF32-13 meets industry standards.
7.What is the process for return or replacement of RDBF32-13?
All RDBF32-13 units undergo pre-shipment inspection (PSI). If there is an issue with RDBF32-13, 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 RDBF32-13 part is unused and in its original packaging.
Return procedure for RDBF32-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RDBF32-13 Tags
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