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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Diodes Incorporated 1N4002L

Name: 1N4002L
Brand: Diodes Incorporated
SKU: 1N4002L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4002L

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-204AL, DO-41, Axial

Datasheet:: 1N4002L.pdf

Description:: DIODE GEN PURP 100V 1A DO41

Quantity:: RFQ Add To RFQ list

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Inventory:8,289

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Product details

Overview

1N4002L from Diodes Incorporated is a 1.0A general-purpose silicon rectifier diode in the A-405 (DO-204AL) axial package, rated for 100V peak repetitive reverse voltage (VRRM), 1.0V forward voltage at 1.0A, and 30A non-repetitive surge current - used in AC/DC power supplies, adapter inputs, and low-frequency rectification stages.

For engineers reviewing the 1N4002L datasheet, 1N4002L pinout, 1N4002L application, or 1N4002L equivalent, key selection criteria include VRRM margin for line-voltage transients, thermal derating above 75°C ambient, IRM leakage at elevated temperature, and compatibility with DO-204AL hand-soldering and wave-solder processes.

Technical Context

This device is a planar-diffused, single-junction silicon PN rectifier optimized for half-wave and full-wave bridge operation at 50/60 Hz. Its junction capacitance is 15 pF at 4.0V reverse bias and 1 MHz, and its thermal resistance (R_JA) is 100 K/W under standard lead conditions.

The 1N4002L operates across –65°C to +175°C junction temperature range, with cathode band polarity marking and UL 94V-0 flammability-rated epoxy encapsulation. It is not designed for high-frequency switching (>1 kHz) due to minority-carrier recovery limitations.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	100 V - Maximum peak reverse voltage before breakdown; sets minimum insulation margin for 120VAC input circuits.
I_O	1.0 A @ T_A = 75°C - Continuous DC output current capability with leads held at ambient at 9.5 mm from case.
V_F @ 1.0A	1.0 V - Forward conduction loss per diode; determines ~1W dissipation at full load in linear supplies.
I_FSM	30 A - Peak surge rating for 8.3 ms half-sine; supports inrush limiting in transformer-fed supplies.
I_R @ 25°C	5.0 µA - Reverse leakage at rated DC blocking voltage; negligible for most low-voltage secondary-side use.
R_JA	100 K/W - Junction-to-ambient thermal resistance; defines temperature rise per watt without heatsinking.

Pinout & Package

Package: A-405 (DO-204AL), axial-leaded, molded plastic case with cathode band marking. Weight: ~0.20 g. Mounting position: any.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry terminal during forward conduction	Connected to AC source or transformer secondary; must withstand full surge current path.
Cathode	Current exit terminal during forward conduction	Marked with band; connects to positive rail or filter capacitor; carries full load current.

Key Features

Feature	Design Value
High surge tolerance	30A I_FSM enables robust handling of transformer inrush and capacitor charging spikes.
Low forward voltage	1.0V V_F at 1.0A reduces conduction loss and improves efficiency in low-cost linear supplies.
UL 94V-0 rated encapsulant	Meets flammability safety requirements for enclosed consumer and industrial power assemblies.
Wide operating temperature	–65°C to +175°C T_j range supports deployment in automotive under-hood and industrial control environments.

Applications

AC/DC Wall Adapters

Industrial Control Power Supplies

Use Scenario: Rectifying 120VAC mains input in low-power wall adapters for consumer electronics.

IC Role / Device Role / Timing Role: Half-wave or bridge rectifier converting AC to pulsating DC prior to filtering and regulation.

Use Value: 100V VRRM provides 2× safety margin over 120VAC peak (170V), and 1.0A rating supports up to 12W output.

Use Scenario: Input-stage rectification in DIN-rail mounted PLC power modules.

IC Role / Device Role / Timing Role: Primary-side diode in unregulated auxiliary supply feeding logic and sensor circuitry.

Use Value: –65°C to +175°C operating range ensures reliability in unventilated enclosures with wide ambient swings.

LED Driver Input Stages

Appliance Motor Control Boards

Use Scenario: Bridge rectification for constant-current LED drivers in commercial lighting fixtures.

IC Role / Device Role / Timing Role: Input rectifier supplying bulk capacitor in flyback or buck-derived topologies.

Use Value: Low 5.0 µA IR at 25°C minimizes standby leakage in always-on lighting systems.

Use Scenario: Snubber and freewheeling paths in brushed motor H-bridge driver PCBs.

IC Role / Device Role / Timing Role: Freewheeling diode clamping inductive kickback from DC motors during PWM commutation.

Use Value: 30A I_FSM safely absorbs energy from 24V/0.5A motor windings during turn-off transients.

Equivalent & Alternatives

The following parts are listed as comparable options for similar general-purpose rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4002 (DO-41)	Same electrical specs; DO-41 package (larger, 0.30 g) vs. A-405 (0.20 g); longer leads, higher R_JA.	Preferred where board space allows and legacy DO-41 footprint is fixed.	Select when mechanical compatibility with existing DO-41 tooling or layout is required.
STPS1H100 (SMA)	Schottky, 100V/1A, V_F ≈ 0.85V, but IR ≈ 100 µA @ 25°C - higher leakage, lower switching loss.	Better for high-efficiency, high-frequency SMPS; unsuitable for high-temp or high-reliability reverse-bias hold.	Choose only if forward-loss reduction outweighs reverse-leakage sensitivity in final design.

Compared with 1N4002 (DO-41), the 1N4002L offers identical electrical performance in a smaller, lighter A-405 package with lower thermal resistance; versus STPS1H100, it trades higher V_F for dramatically lower IR and superior high-temperature reverse stability.

Availability

1N4002L is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial control boards, LED driver input stages, and appliance motor control circuits requiring stable component supply and long-term manufacturability.

Supply support for 1N4002L 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 U.S.

The 1N400x/L series belongs to Diodes' general-purpose rectifier product line, engineered for cost-sensitive, high-volume AC/DC conversion in consumer, industrial, and appliance applications.

FAQ

What is the maximum junction temperature for continuous operation?

The 1N4002L has a maximum junction temperature of +175°C and a storage temperature range of –65°C to +175°C. Continuous operation at this limit requires strict thermal management - typical designs maintain T_j ≤ 125°C using ambient derating curves and adequate PCB copper area.

Can the 1N4002L be used in full-wave bridge configurations?

Yes - four 1N4002L diodes can form a discrete full-wave bridge rectifier for 120VAC inputs. Each diode sees only half the peak inverse voltage (≈170V), so the 100V VRRM rating requires derating or use of ≥1N4004L (400V) for direct replacement in standard bridges.

Is the 1N4002L RoHS compliant and halogen-free?

Yes - Diodes Incorporated confirms the 1N4002L meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Compliance documentation, including material declarations and test reports, is available via Diodes' official product page and distributor portals.

How does forward voltage vary with temperature and current?

V_F decreases by ~2 mV/°C at constant current and increases logarithmically with forward current. At 1.0A and 25°C, V_F is 1.0V; at 100°C junction temperature, it drops to ~0.85V - a behavior confirmed in Figure 2 of the DS28002 datasheet.

1N4002L Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-204AL, DO-41, Axial

Packaging:: Bulk

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 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 @ 100 V

Capacitance @ Vr, F:: 15pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-41

Operating Temperature - Junction:: -55°C ~ 125°C

1N4002L FAQ

1.How can I place an order for 1N4002L through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4002L 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 1N4002L reliable?

The price and inventory of 1N4002L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4002L is usually 5 days.

3.What payment methods are accepted for 1N4002L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4002L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4002L?

1N4002L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4002L 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 1N4002L?

For technical support, including 1N4002L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4002L requirements.

6.How does Aetrix verify that 1N4002L is sourced from the original manufacturer or authorized distributors?

All 1N4002L 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 1N4002L meets industry standards.

7.What is the process for return or replacement of 1N4002L?

All 1N4002L units undergo pre-shipment inspection (PSI). If there is an issue with 1N4002L, 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 1N4002L part is unused and in its original packaging.

Return procedure for 1N4002L:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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