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Diodes Incorporated RL204-T
- Part No.:
- RL204-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
RL204-T.pdf
- Description:
- DIODE GEN PURP 400V 2A DO15
- Quantity:
- Payment:
- Shipping:
Inventory:9,512
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Product details
Overview
RL204-T from Diodes Incorporated is a 2.0A, 400V general-purpose silicon rectifier diode in DO-15 package, featuring 1.0V max forward voltage at 2.0A DC, 70A peak surge current, and 5.0mA max reverse leakage at 25°C - used in AC/DC power supplies, adapter front-ends, and industrial control power stages.
For engineers reviewing the RL204-T datasheet, RL204-T pinout, RL204-T application, or RL204-T equivalent, key selection criteria include VRRM = 400V, I(AV) = 2.0A with 9.5mm lead length at TA = 50°C, thermal resistance RθJC = 40°C/W, and DO-15 mechanical compatibility in through-hole power conversion designs.
Technical Context
This axial-lead rectifier operates in single-phase, half-wave 60Hz configurations with resistive or inductive loads. Its junction capacitance is 40pF at 4V reverse bias (1MHz), and it sustains 70A non-repetitive surge for 8.3ms per JEDEC method.
The device exhibits a forward voltage drop of ≤1.0V at rated 2.0A DC, with reverse leakage limited to 5.0mA at 25°C and 50mA at 125°C under full-rated blocking voltage - enabling reliable operation across -65°C to +150°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive peak reverse voltage; defines safe AC input voltage handling in bridge or half-wave rectification |
| I(AV) | 2.0 A - average forward rectified current at 50°C ambient with 9.5 mm lead length; sets continuous power delivery capability |
| VF | 1.0 V max at 2.0 A DC - forward voltage drop directly impacts conduction loss and thermal rise in linear power stages |
| IFSM | 70 A - peak non-repetitive surge current for 8.3 ms half-sine; determines robustness against line transients and inrush |
| RθJC | 40 °C/W - junction-to-case thermal resistance; enables thermal modeling when mounted on PCB or heatsink |
| CJ | 40 pF at 4 V - junction capacitance affects high-frequency switching noise and EMI in SMPS front-end filtering |
Pinout & Package
DO-15 molded plastic package with axial leads; cathode indicated by color band; weight ≈ 0.4 g; compliant with UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or transformer secondary; must withstand surge and steady-state current |
| Cathode | Forward current exit point | Marked with color band; connects to bulk capacitor or downstream regulator input |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | ≤1.0 V at 2.0 A reduces conduction loss and improves efficiency in low-voltage power supplies |
| High surge current rating | 70 A for 8.3 ms meets JEDEC requirements for line transient immunity in universal-input adapters |
| Low reverse leakage | 5.0 mA max at 25°C ensures minimal standby power loss in offline power converters |
| UL 94V-0 plastic case | Flame-retardant housing satisfies safety standards for enclosed industrial and consumer power equipment |
Applications
| AC/DC Wall Adapters | Industrial Motor Control Power Supplies |
|---|---|
Use Scenario: 5–24V output, 1–3W universal-input offline adapters for IoT sensors and embedded controllers. IC Role / Device Role / Timing Role: Primary-side rectifier converting 85–265V AC to pulsating DC before bulk capacitor and linear regulator. Use Value: 1.0V VF minimizes heat generation in compact enclosures; DO-15 form factor allows manual or wave soldering in cost-sensitive production. | Use Scenario: Auxiliary power supply for gate drivers and logic in 3-phase motor inverters operating up to 60°C ambient. IC Role / Device Role / Timing Role: Half-wave rectifier feeding isolated DC/DC converter powering IGBT driver bias rails. Use Value: 70A IFSM tolerates startup surges from large filter capacitors; -65°C to +150°C rating supports wide industrial temperature deployment. |
| LED Driver Input Stage | PLC Digital Input Protection |
Use Scenario: Constant-voltage LED drivers for commercial lighting with dimmable AC input. IC Role / Device Role / Timing Role: Input rectifier in passive PFC topology, preceding buck or flyback controller. Use Value: 400V VRRM accommodates 277V AC line peaks; 40pF CJ limits high-frequency noise coupling into sensitive current-sense circuitry. | Use Scenario: 24V DC digital input modules in programmable logic controllers with 120/240V AC field wiring. IC Role / Device Role / Timing Role: Reverse-polarity and overvoltage protection rectifier in input conditioning stage before optocoupler isolation. Use Value: 50mA IR at 125°C ensures stable leakage behavior during extended high-temperature operation; DO-15 axial leads simplify PCB layout for DIN-rail mount designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 2A04G | Same VRRM = 400V, I(AV) = 2.0A, but in DO-204AL (SMA) surface-mount package | Requires rework of PCB layout and assembly process; lacks axial-leaded mechanical robustness for high-vibration environments | Select when space-constrained designs demand SMT assembly and thermal performance via pad copper area is prioritized |
| RS2M | Same DO-15 package, but VRRM = 1000V and I(AV) = 2.0A; higher VF = 1.15V typical | Over-spec'd reverse voltage increases cost and may degrade efficiency in 400V-class systems | Choose only if system-level surge testing requires >600V transient margin or legacy design reuse mandates identical footprint |
Compared with RL204-T, 2A04G offers SMT compatibility at the expense of mechanical mounting flexibility, while RS2M trades higher voltage headroom for increased conduction loss - making RL204-T optimal for cost-sensitive, vibration-prone 400V rectification where DO-15 reliability is essential.
Availability
RL204-T is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial motor control auxiliary rails, and LED driver input stages requiring stable component supply and long-term manufacturability planning.
Supply support for RL204-T 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 automotive, industrial, computing, and consumer markets with high-reliability components.
The RL series belongs to Diodes' general-purpose rectifier product line, engineered for cost-effective, thermally robust AC/DC conversion in mainstream power supply designs where DO-15 axial packaging and proven surge tolerance are critical.
FAQ
Is RL204-T still in active production?
No - Diodes Incorporated has discontinued RL204-T and marked it "Not Recommended for New Designs." It remains available through authorized distributors for legacy support and repair, but new designs should migrate to the 2A01G–2A07G series, which offer improved thermal performance and RoHS compliance in the same DO-15 footprint.
What is the maximum allowable lead temperature during soldering?
The RL204-T leads are rated for soldering per MIL-STD-202, Method 208: maximum 260°C for 10 seconds. Exceeding this risks internal bond wire damage or epoxy cracking. Preheating to 150°C before soldering is recommended to minimize thermal shock during wave or hand-soldering processes.
Can RL204-T be used in full-wave bridge configurations?
Yes - RL204-T is rated for single-phase, half-wave operation per datasheet conditions, but its 400V VRRM and 70A IFSM make it suitable as an individual leg in discrete full-wave bridges. Ensure each diode sees ≤400V reverse voltage and shares current evenly; derate I(AV) to 1.5A per leg under continuous conduction mode.
How does RL204-T's thermal resistance compare to modern alternatives?
RL204-T specifies RθJC = 40°C/W, measured from junction to case. Modern DO-15 rectifiers like 2A04G achieve ~35°C/W due to optimized die attach and leadframe design. This 5°C/W difference translates to ~2.5°C higher junction temperature at 2.0A - acceptable for most ambient-limited applications but relevant in sealed enclosures above 60°C.
RL204-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
- Operating Temperature - Junction:
- -65°C ~ 150°C
RL204-T FAQ
1.How can I place an order for RL204-T through Aetrix?
Please submit a Request for Quotation (RFQ) for RL204-T 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 RL204-T reliable?
The price and inventory of RL204-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RL204-T is usually 5 days.
3.What payment methods are accepted for RL204-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RL204-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RL204-T?
RL204-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RL204-T 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 RL204-T?
For technical support, including RL204-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RL204-T requirements.
6.How does Aetrix verify that RL204-T is sourced from the original manufacturer or authorized distributors?
All RL204-T 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 RL204-T meets industry standards.
7.What is the process for return or replacement of RL204-T?
All RL204-T units undergo pre-shipment inspection (PSI). If there is an issue with RL204-T, 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 RL204-T part is unused and in its original packaging.
Return procedure for RL204-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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