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Diodes Incorporated 1N4001L-T
- Part No.:
- 1N4001L-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4001L-T.pdf
- Description:
- DIODE GEN PURP 50V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:7,132
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Product details
Overview
1N4001L-T from Diodes Incorporated is a general-purpose silicon rectifier diode in DO-41 package, rated for 50 V peak repetitive reverse voltage, 1.0 A average forward current at +75°C, and 30 A non-repetitive surge current. It features low forward voltage drop (1.0 V @ 1.0 A), low reverse leakage (5.0 µA @ 25°C), and RoHS-compliant bright tin-plated leads.
For engineers reviewing the 1N4001L-T datasheet, 1N4001L-T pinout, 1N4001L-T application, or 1N4001L-T equivalent, key selection criteria include its 50 V blocking capability, thermal resistance (100 K/W), junction capacitance (15 pF), DO-41 mechanical outline, and suitability for low-cost AC/DC front-end rectification in legacy power supplies.
Technical Context
This diode employs a diffused PN junction optimized for high surge tolerance and stable DC blocking under resistive or inductive loads at 60 Hz. Its 1.0 V forward voltage ensures minimal conduction loss at rated 1.0 A, while the 5.0 µA reverse leakage at 25°C supports reliable off-state isolation in low-power circuits.
The DO-41 molded plastic case (UL 94V-0) provides mechanical robustness and thermal dissipation to sustain operation from –65°C to +150°C. Junction-to-ambient thermal resistance of 100 K/W reflects standard leaded package limits, requiring PCB copper area or ambient airflow for sustained full-load operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Repetitive Reverse Voltage | 50 V - Maximum AC/DC reverse bias before breakdown; defines usable input range in 12–24 VAC transformer-based supplies. |
| Average Forward Current | 1.0 A @ +75°C - Continuous DC output capability with derating above ambient; requires heatsinking or airflow beyond 75°C. |
| Forward Voltage | 1.0 V @ 1.0 A - Conduction loss of 1.0 W at full load; impacts efficiency and thermal design in linear power stages. |
| Non-Repetitive Surge Current | 30 A (8.3 ms half-sine) - Withstands inrush from uncharged capacitors or motor startup without failure. |
| Reverse Leakage Current | 5.0 µA @ 25°C - Ensures minimal standby power loss and signal integrity in high-impedance hold circuits. |
| Junction Capacitance | 15 pF @ 4 V, 1 MHz - Limits high-frequency noise coupling and switching speed in snubber-free designs. |
| Thermal Resistance | 100 K/W - Requires ≥1 cm² copper pad or forced air for continuous 1.0 A operation at >50°C ambient. |
Pinout & Package
DO-41 axial-leaded plastic package with cathode band marking; body diameter 4.06–5.21 mm, length 25.4 mm, lead diameter 0.71–0.864 mm, lead spacing 2.00–2.72 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connects to AC source or transformer secondary; polarity must align with circuit's forward-bias requirement. |
| Cathode (banded end) | Forward current exit / reverse-blocking terminal | Identified by molded band; connects to positive rail or filter capacitor; determines rectifier orientation in bridge or half-wave topology. |
Key Features
| Feature | Design Value |
|---|---|
| Diffused junction construction | Enables uniform electric field distribution, improving surge reliability and reducing localized hot-spot risk during transient overload. |
| 30 A surge rating (8.3 ms) | Supports direct connection to 120 VAC mains with minimal inrush limiting, simplifying input stage design in cost-sensitive adapters. |
| Bright tin-plated leads | Ensures MIL-STD-202-compliant solderability and long-term intermetallic stability on PCBs without flux residue concerns. |
| UL 94V-0 flammability rating | Meets basic safety requirements for plastic-encapsulated components in consumer-grade power supplies and industrial controls. |
Applications
| AC/DC Wall Adapters | Industrial Control Power Supplies |
|---|---|
Use Scenario: Rectifying 12–24 VAC from toroidal transformers into unregulated DC for linear regulators in plug-in chargers. IC Role / Device Role / Timing Role: Half-wave or full-wave rectifier diode providing unidirectional current path and DC bus generation. Use Value: 1.0 V forward drop minimizes heat rise in compact enclosures; 30 A surge withstand accommodates repeated plug-in surges. | Use Scenario: Input-stage rectification in DIN-rail mounted 24 VDC power modules powering PLC I/O cards and sensors. IC Role / Device Role / Timing Role: Primary AC-to-DC conversion element in non-isolated auxiliary supplies feeding logic-level control circuitry. Use Value: –65°C to +150°C operating range ensures reliability across factory floor temperature extremes without derating. |
| LED Driver Auxiliary Supplies | Legacy Appliance Power Sections |
Use Scenario: Generating low-current bias rails for constant-current LED driver ICs in retrofit lamps and signage. IC Role / Device Role / Timing Role: Low-power rectifier supplying 5–12 VDC to driver control logic and gate drivers. Use Value: 5.0 µA reverse leakage prevents standby current drain in always-on lighting systems with battery backup. | Use Scenario: Main rectifier in decades-old microwave oven control boards and washing machine motor controllers. IC Role / Device Role / Timing Role: General-purpose power diode replacing obsolete 1N4001 variants in repair and maintenance contexts. Use Value: DO-41 footprint and identical electrical specs enable drop-in replacement without PCB modification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar general-purpose rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4001-T (Diodes Inc.) | Same electrical specs and DO-41 package; differs only in tape-and-reel packaging (5K vs. 1N4001L-T's 5K reel with different carrier tape spec). | No functional difference; both intended for automated SMT placement with compatible feeders. | Select based on assembly line tape width and sprocket pitch requirements-not electrical performance. |
| S1A-T (Diodes Inc.) | Higher 50 V PIV rating but lower 1.0 A average current derating curve; smaller DO-204AL (SMA) package with 60 K/W RθJA. | Better suited for space-constrained PCBs where thermal management allows higher ambient operation. | Prefer S1A-T when board area is critical and thermal design accommodates tighter derating; avoid if legacy DO-41 footprint is fixed. |
Compared with 1N4001L-T, the 1N4001-T offers identical performance in a functionally interchangeable tape format, while the S1A-T trades package size and thermal resistance for identical voltage rating-making it viable only where layout and cooling permit.
Availability
1N4001L-T is available at Aetrix Electronics and suitable for AC/DC wall adapters, industrial control power supplies, and legacy appliance repairs requiring stable component supply and long-lifecycle support.
Supply support for 1N4001L-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, designed specifically for cost-sensitive, high-volume AC/DC conversion in consumer, industrial, and appliance applications where reliability and manufacturability outweigh advanced performance metrics.
FAQ
Is 1N4001L-T suitable for new designs?
No. Diodes Incorporated explicitly marks this part as "NOT RECOMMENDED FOR NEW DESIGN" in its official datasheet (DS28002 Rev. 9-3). It is maintained for legacy support and repair; new designs should use modern alternatives like the S1A-S1M series, which offer improved surge robustness, smaller footprints, and better thermal performance.
What does the 'L' suffix in 1N4001L-T signify?
The 'L' denotes compliance with Diodes Incorporated's specific tape-and-reel packaging specification-distinct from the standard 1N4001-T reel. Both are DO-41 packaged and electrically identical, but the 'L' variant uses a carrier tape engineered for enhanced moisture barrier and feeder compatibility per internal Diodes Inc. packaging standards.
Can 1N4001L-T replace 1N4007 in a 1000 V circuit?
No. 1N4001L-T has a 50 V peak repetitive reverse voltage rating, while 1N4007 is rated for 1000 V. Substituting it in a 1000 V application will cause immediate reverse breakdown and catastrophic failure. Voltage ratings are not interchangeable; always match or exceed the required VRRM.
How does thermal performance compare between 1N4001L-T and SMD equivalents?
1N4001L-T has a junction-to-ambient thermal resistance of 100 K/W in free air, whereas surface-mount equivalents like S1A-T specify 60 K/W. This means the DO-41 device requires significantly more PCB copper area or airflow to dissipate the same 1.0 W of power-making SMD versions thermally superior when board space permits.
1N4001L-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):
- 50 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 @ 50 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
1N4001L-T FAQ
1.How can I place an order for 1N4001L-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4001L-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 1N4001L-T reliable?
The price and inventory of 1N4001L-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4001L-T is usually 5 days.
3.What payment methods are accepted for 1N4001L-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4001L-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4001L-T?
1N4001L-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4001L-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 1N4001L-T?
For technical support, including 1N4001L-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4001L-T requirements.
6.How does Aetrix verify that 1N4001L-T is sourced from the original manufacturer or authorized distributors?
All 1N4001L-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 1N4001L-T meets industry standards.
7.What is the process for return or replacement of 1N4001L-T?
All 1N4001L-T units undergo pre-shipment inspection (PSI). If there is an issue with 1N4001L-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 1N4001L-T part is unused and in its original packaging.
Return procedure for 1N4001L-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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