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Diodes Incorporated 1N4004L-T
- Part No.:
- 1N4004L-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4004L-T.pdf
- Description:
- DIODE GEN PURP 400V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:6,333
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Product details
Overview
1N4004L-T from Diodes Incorporated is a general-purpose silicon rectifier diode in DO-41 package, rated for 400 V peak repetitive reverse voltage, 1.0 A average forward current, and 30 A non-repetitive surge current. It features low forward voltage drop (1.0 V at 1.0 A), low reverse leakage (5.0 µA at 25°C), and is widely used in AC/DC power supplies, adapter circuits, and input stage rectification.
For engineers reviewing the 1N4004L-T datasheet, 1N4004L-T pinout, 1N4004L-T application, or 1N4004L-T equivalent, key selection criteria include blocking voltage margin, thermal derating above 75°C, surge robustness under capacitive-input filter conditions, and compatibility with DO-41 footprint and lead-forming requirements.
Technical Context
This axial-lead diode employs a diffused PN junction optimized for cost-sensitive, medium-power linear power conversion. Its 100 K/W junction-to-ambient thermal resistance requires PCB copper area or ambient airflow for sustained 1.0 A operation above +75°C ambient.
The device exhibits 15 pF typical junction capacitance at 4.0 V reverse bias and 1 MHz, limiting high-frequency switching use; its 1.0 V forward voltage reflects standard silicon rectifier performance, not Schottky-level efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Sustains peak reverse voltage in half-wave rectifier applications with 280 V RMS input. |
| IO @ TA=+75°C | 1.0 A - Maximum continuous DC output current when leads are held at ambient at 9.5 mm from case. |
| IFSM (8.3 ms) | 30 A - Withstands single half-sine surge, critical for capacitor-input filter inrush limiting. |
| VFM @ IF=1.0 A | 1.0 V - Forward conduction loss yields ~1.0 W dissipation at full load, driving heatsink or layout decisions. |
| IRM @ VR=400 V | 5.0 µA @ 25°C - Low leakage preserves hold-up time in standby or high-impedance bias networks. |
| RθJA | 100 K/W - Requires ≥1 cm² of 1 oz copper pad to maintain junction below 150°C at 1.0 A in still air. |
Pinout & Package
DO-41 molded plastic package with axial leads; cathode identified by band. Standard lead finish: bright tin, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC source or transformer secondary; must withstand surge and reverse recovery stress. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to positive rail; reverse voltage appears across this node during off-state. |
Key Features
| Feature | Design Value |
|---|---|
| Diffused junction construction | Enables robust surge handling (30 A) without metallurgical degradation under repeated overloads. |
| UL 94V-0 flammability rating | Meets safety standards for enclosed power supply housings without additional flame-retardant barriers. |
| RoHS-compliant lead finish | Bright tin plating ensures reliable solder wetting and long-term intermetallic stability in reflow or hand-solder processes. |
| Low moisture sensitivity (J-STD-020D Level 1) | No bake requirement before assembly; suitable for standard SMT or through-hole production lines. |
Applications
| AC/DC Wall Adapters | Industrial Control Power Supplies |
|---|---|
Use Scenario: Step-down transformer followed by single-phase rectification into bulk capacitor. IC Role / Device Role / Timing Role: Primary rectifier converting 12–24 VAC transformer output to unregulated DC. Use Value: 400 V VRRM provides 2× margin over 170 V peak from 120 VAC line, ensuring reliability under brownout or surge conditions. | Use Scenario: Input rectification for 24 VDC PLC I/O power rails fed from 36 VAC control transformers. IC Role / Device Role / Timing Role: Bridge leg component (in discrete full-wave configuration) delivering stable DC bus for logic and relay drivers. Use Value: 30 A IFSM tolerates repeated motor contactor coil energization surges without degradation. |
| Consumer Audio Power Stages | LED Driver Input Rectification |
Use Scenario: Dual-rail ±15 V linear supply for op-amp-based audio preamplifiers. IC Role / Device Role / Timing Role: Half-wave rectifier in center-tapped transformer configuration. Use Value: 1.0 V VFM minimizes dropout and thermal rise in compact chassis with limited airflow. | Use Scenario: Off-line LED driver with capacitive dropper and bridge rectifier. IC Role / Device Role / Timing Role: One leg of four-diode bridge converting 230 VAC mains to pulsating DC. Use Value: 5.0 µA IRM prevents excessive leakage current that would compromise Class II isolation and touch-safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4004G | Same electrical specs; green molding compound (halogen-free), identical DO-41 mechanicals. | No functional difference; selected where halogen-free compliance is mandated. | Choose for RoHS+REACH-compliant industrial designs requiring halogen-free materials. |
| S1J | 1.0 A IO, 600 V VRRM, same DO-41 package but higher surge rating (50 A) and lower VFM (0.95 V). | Better suited for higher-line-voltage regions (230 VAC) or designs needing extra surge margin. | Select when upgrading legacy 1N4004-T designs for global mains compatibility or tighter thermal budgets. |
Compared with 1N4004L-T, 1N4004G offers identical performance with halogen-free packaging, while S1J delivers higher blocking voltage and improved surge capability-both enable design continuity without footprint change but address distinct compliance or robustness requirements.
Availability
1N4004L-T is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial control systems, and consumer audio equipment requiring stable component supply and tape-and-reel delivery for automated assembly.
Supply support for 1N4004L-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, with design and manufacturing operations across Asia and the Americas.
The 1N400x series belongs to Diodes' general-purpose rectifier product line, engineered for cost-effective, high-volume linear power conversion in consumer, industrial, and computing applications.
FAQ
Is 1N4004L-T suitable for switching power supplies?
No. The 1N4004L-T has relatively slow reverse recovery (not specified in datasheet but typical of standard recovery rectifiers > 2 µs), making it unsuitable for high-frequency SMPS (>20 kHz). It is intended for line-frequency (50/60 Hz) rectification only.
What is the maximum operating temperature for continuous 1.0 A current?
At 1.0 A DC, junction temperature must stay ≤150°C. With RθJA = 100 K/W and ambient at +75°C, power dissipation (1.0 A × 1.0 V = 1.0 W) raises junction by 100°C - reaching exactly 175°C. Therefore, full 1.0 A is only rated at TA ≤ +75°C, per datasheet note.
Does 1N4004L-T have a specified reverse recovery time (trr)?
No. The DS28002 datasheet does not specify trr for the 1N400x series. These are standard recovery rectifiers; trr is typically > 2 µs and not characterized - confirming their unsuitability for fast-switching applications.
Can 1N4004L-T replace 1N4007 in a 120 VAC input circuit?
Yes, with caution. 1N4004L-T's 400 V VRRM exceeds the 170 V peak of 120 VAC, providing adequate margin. However, if the design may encounter 230 VAC input or transient spikes >400 V, 1N4007 (1000 V) is safer. Derating and surge history must be verified.
1N4004L-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 150°C
1N4004L-T FAQ
1.How can I place an order for 1N4004L-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4004L-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 1N4004L-T reliable?
The price and inventory of 1N4004L-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4004L-T is usually 5 days.
3.What payment methods are accepted for 1N4004L-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4004L-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4004L-T?
1N4004L-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4004L-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 1N4004L-T?
For technical support, including 1N4004L-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4004L-T requirements.
6.How does Aetrix verify that 1N4004L-T is sourced from the original manufacturer or authorized distributors?
All 1N4004L-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 1N4004L-T meets industry standards.
7.What is the process for return or replacement of 1N4004L-T?
All 1N4004L-T units undergo pre-shipment inspection (PSI). If there is an issue with 1N4004L-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 1N4004L-T part is unused and in its original packaging.
Return procedure for 1N4004L-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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