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Diodes Incorporated RS404L-F
- Part No.:
- RS404L-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, RS-4L
- Datasheet:
-
RS404L-F.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 4A RS-4L
- Quantity:
- Payment:
- Shipping:
Inventory:3,282
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Product details
Overview
RS404L-F from Rectron Semiconductor is a 4.0A, 400V PIV single-phase bridge rectifier in RS-4L plastic package with UL 94V-0 flammability rating, 200A peak surge capability, and 1.0V max forward voltage at 3.0A - used for AC/DC conversion in industrial power supplies and motor control front-ends.
For engineers reviewing the RS404L-F datasheet, RS404L-F pinout, RS404L-F application, or RS404L-F equivalent, key selection criteria include rated PIV (400V), average forward current (4.0A @ 50°C), surge robustness (200A, 8.3ms), thermal derating curve, and RS-4L mechanical footprint compatibility with PCB layout constraints.
Technical Context
This bridge rectifier integrates four silicon diodes in a single-phase full-wave configuration, enabling efficient AC-to-DC conversion without external wiring. It supports resistive or inductive loads at 60Hz and requires 20% current derating for capacitive loads per datasheet guidance.
Thermal performance is defined by case temperature derating (Fig.1), with full 4.0A output only at TA ≤ 50°C and linear reduction to zero at TC = 140°C. Reverse leakage remains ≤10.0 µA at 25°C and ≤1.0 mA at 100°C under rated DC blocking voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum recurrent peak reverse voltage; defines safe AC input voltage ceiling before breakdown. |
| I(AV) | 4.0 A at TA = 50°C - Continuous DC output current capability; must be derated above 50°C per Fig.1. |
| IFSM | 200 A (8.3ms half-sine) - Surge withstand level for line transients or inrush; critical for reliability in unfiltered mains inputs. |
| VF | 1.0 V at 3.0A - Forward voltage drop directly impacts conduction loss and thermal design in high-current paths. |
| IR | 10.0 µA at 25°C, 1.0 mA at 100°C - Reverse leakage affects standby power and high-impedance sensing circuits. |
| TJ Range | –55°C to +150°C - Junction temperature range enables operation in harsh industrial environments without forced cooling. |
Pinout & Package
Package: RS-4L molded plastic case (UL 94V-0), 5.6 g weight, dimensions A=18.5–19.5 mm, B=15.4–16.0 mm, D=6.2–6.5 mm, E=4.6–5.6 mm, G=1.5–2.0 mm, H≈1.3 mm. Leads are tin-plated and solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC Input Terminal 1 | One leg of AC input; connects to transformer secondary or line filter output. |
| ~AC2 | AC Input Terminal 2 | Second leg of AC input; completes full-wave bridge input path. |
| +DC | Positive DC Output | Anode-side output node; feeds bulk capacitor or downstream regulator. |
| –DC | Negative DC Output / Common Return | Cathode-side output node; serves as system ground reference for rectified output. |
Key Features
| Feature | Design Value |
|---|---|
| UL Recognition | Recognized under UL File E94661 - ensures compliance with safety standards for end-equipment certification. |
| Surge Robustness | 200A non-repetitive peak surge (JEDEC 8.3ms) - sustains repeated line surges without degradation. |
| Low Leakage | ≤10 µA IR at 25°C - minimizes standby power loss and improves efficiency in low-load conditions. |
| High-Temp Operation | Rated up to +150°C junction temperature - supports compact heatsinkless designs in enclosed industrial enclosures. |
Applications
| Industrial Power Supply | Motor Control Front-End |
|---|---|
Use Scenario: AC mains input stage of DIN-rail mounted 24V/48V DC power supply for PLCs and I/O modules. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 115/230VAC to unregulated DC bus prior to filtering and regulation. Use Value: 400V PIV and 200A surge rating ensure immunity to 1.5kV line spikes common in factory floor environments. | Use Scenario: Rectification stage in single-phase AC induction motor drive with braking resistor interface. IC Role / Device Role / Timing Role: Converts AC line to DC link for inverter stage; handles regenerative energy during dynamic braking. Use Value: Low VF (1.0V) reduces conduction loss in high-duty-cycle applications, lowering heatsink requirements. |
| LED Driver Input Stage | Test Equipment Power Module |
Use Scenario: Input rectifier in constant-current LED drivers for outdoor signage operating on 230VAC. IC Role / Device Role / Timing Role: Provides isolated DC bus feeding active PFC and buck converter stages. Use Value: UL 94V-0 package and 150°C TJ rating support long-life operation in thermally constrained outdoor enclosures. | Use Scenario: Bench power supply module in automated test equipment requiring stable, ripple-tolerant DC rails. IC Role / Device Role / Timing Role: Delivers clean, high-current DC output for powering DUT interfaces and signal conditioning circuitry. Use Value: Tight IR spec (≤10 µA at 25°C) prevents drift in precision analog reference paths during standby modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU4K (ON Semiconductor) | Same 4.0A/400V rating, but GBU package (larger footprint, higher thermal resistance). | Requires PCB pad redesign; less suitable for space-constrained layouts where RS-4L fits. | Choose when existing GBU4K footprint is standardized and thermal margin allows. |
| DB104S (Diodes Inc.) | 4.0A/400V, but SMB package - lower surge rating (100A vs. 200A) and no UL recognition. | Not suitable for mains-connected industrial equipment requiring safety certification. | Acceptable only in low-risk, non-certified consumer-grade power modules. |
Compared with GBU4K and DB104S, RS404L-F offers superior surge immunity (200A), UL recognition (E94661), and optimized RS-4L footprint for industrial PCB density - making it preferred for certified, high-reliability AC/DC front-ends.
Availability
RS404L-F is available at Aetrix Electronics and suitable for industrial power supplies, motor control systems, and LED driver input stages requiring stable component supply, long-lifecycle assurance, and UL-compliant rectification.
Supply support for RS404L-F 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
Rectron Semiconductor is a Taiwan-based power semiconductor manufacturer specializing in rectifiers, diodes, and bridge modules for industrial, automotive, and consumer applications.
The RS401L–RS407L series targets cost-sensitive yet reliability-critical AC/DC front-end designs where surge resilience, thermal stability, and safety certification are mandatory.
FAQ
What is the maximum allowable case temperature for continuous 4.0A operation?
The RS404L-F delivers its full 4.0A average forward current only when case temperature (TC) is maintained at or below 50°C, as specified in Fig.1 of the datasheet. Above 50°C, current must be linearly derated to zero at 140°C - requiring thermal design that accounts for PCB copper area, ambient airflow, and proximity to heat sources.
Does RS404L-F support capacitive load applications without modification?
No - the datasheet explicitly requires 20% derating of I(AV) for capacitive loads due to higher peak currents and increased thermal stress. For a 4.0A-rated unit, this means limiting continuous output to 3.2A when feeding bulk capacitance directly after rectification, unless additional thermal margin or active cooling is implemented.
Is the RS-4L package compatible with standard wave soldering processes?
Yes - the RS-4L package uses tin-plated leads compliant with MIL-STD-202 Method 208, supporting both wave and reflow soldering. Peak temperature must not exceed 260°C for ≤10 seconds, and preheat ramp rate should stay within 3°C/s to avoid internal delamination or lead finish oxidation.
How does the 200A surge rating compare to typical JEDEC test conditions?
The 200A rating follows JEDEC Method 201A for 8.3ms half-sine waveform - matching one full cycle of 60Hz AC. This reflects real-world surge events like cold-start inrush or lightning-induced transients on distribution lines, and is validated per Fig.4 in the datasheet showing survivability across 1–250 cycles at rated amplitude.
RS404L-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SIP, RS-4L
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- RS-4L
RS404L-F FAQ
1.How can I place an order for RS404L-F through Aetrix?
Please submit a Request for Quotation (RFQ) for RS404L-F 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 RS404L-F reliable?
The price and inventory of RS404L-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS404L-F is usually 5 days.
3.What payment methods are accepted for RS404L-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS404L-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS404L-F?
RS404L-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS404L-F 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 RS404L-F?
For technical support, including RS404L-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS404L-F requirements.
6.How does Aetrix verify that RS404L-F is sourced from the original manufacturer or authorized distributors?
All RS404L-F 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 RS404L-F meets industry standards.
7.What is the process for return or replacement of RS404L-F?
All RS404L-F units undergo pre-shipment inspection (PSI). If there is an issue with RS404L-F, 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 RS404L-F part is unused and in its original packaging.
Return procedure for RS404L-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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