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

Diodes Incorporated 1N5401-B

Name: 1N5401-B
Brand: Diodes Incorporated
SKU: 1N5401-B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5401-B

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: 1N5401-B.pdf

Description:: DIODE GEN PURP 100V 3A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:6,697

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Product details

Overview

1N5401-B from Diodes Incorporated is a 3.0A, 100V peak repetitive reverse voltage general-purpose silicon rectifier diode in DO-201AD package, featuring 1.0V forward voltage at 3.0A, 200A non-repetitive surge capability, and low 10μA reverse leakage at 25°C - used in AC/DC power supplies, battery chargers, and DC motor control circuits.

For engineers reviewing the 1N5401-B datasheet, 1N5401-B pinout, 1N5401-B application, or 1N5401-B equivalent, key selection criteria include its 100V V_RRM, thermal resistance of 15°C/W, DO-201AD mechanical compatibility, and derated current handling up to 105°C ambient.

Technical Context

This axial-lead rectifier employs a diffused junction for stable high-current conduction and low forward voltage drop. Its 200A surge rating supports transient line-voltage spikes in unregulated power supplies without failure.

Designed for single-phase, half-wave rectification at 60Hz with resistive or inductive loads, it requires 20% current derating under capacitive loading per specification. Thermal performance is validated with leads held at ambient temperature 9.5mm from case.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum peak reverse voltage before breakdown; defines safe AC input voltage ceiling (e.g., ≤70V RMS).
I_O	3.0 A @ T_A = 105°C - Continuous average forward current with specified lead length and ambient cooling.
V_F	1.0 V @ I_F = 3.0A - Forward conduction loss directly impacts power dissipation (3.0W typical at full load).
I_FSM	200 A (8.3ms half-sine) - Withstands brief inrush surges during power-up or fault conditions.
I_R	10 μA @ 25°C, rated V_R - Low leakage preserves efficiency in high-impedance hold-up or sensing circuits.
R_θJA	15 °C/W - Junction-to-ambient thermal resistance determines heatsinking requirement for sustained operation.
T_j/T_STG	–65°C to +150°C - Wide operating range enables use in industrial enclosures and automotive under-hood environments.

Pinout & Package

DO-201AD molded plastic package with axial leads; cathode identified by band marking; tin-plated leads compliant with MIL-STD-202 Method 208 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry point	Connected to AC source or transformer secondary; must withstand full surge current path.
Cathode (Lead 2, banded end)	Forward current exit / reverse blocking terminal	Connects to filter capacitor or load; reverse-biased during negative half-cycle to block conduction.

Key Features

Feature	Design Value
Diffused junction construction	Enables uniform current distribution and stable V_F over lifetime and temperature.
200A surge rating (8.3ms)	Supports reliable startup in transformer-coupled supplies without fusing or derating.
UL 94V-0 flammability rating	Meets safety standards for enclosed power equipment requiring flame-retardant encapsulation.
RoHS-compliant tin plating	Ensures lead-free assembly compatibility and corrosion resistance in humid environments.

Applications

AC/DC Power Supply Input Stage

Battery Charger Rectification

Use Scenario: Converts 50/60Hz AC mains or transformer output to pulsating DC prior to filtering and regulation.

IC Role / Device Role / Timing Role: Primary rectifying element in single-phase half-wave or full-wave bridge configurations.

Use Value: 3.0A continuous rating and 200A surge tolerance ensure robust operation under line transients and load surges.

Use Scenario: Rectifies AC from step-down transformer to charge 12V lead-acid or NiMH battery banks.

IC Role / Device Role / Timing Role: Unidirectional current gate enabling controlled charging current flow into battery terminals.

Use Value: Low 1.0V V_F minimizes heat generation and improves charger efficiency at 3A nominal current.

DC Motor Control (Unidirectional)

Industrial Control Relay Snubber

Use Scenario: Supplies unidirectional DC to brushed DC motors in conveyor systems or actuator drives.

IC Role / Device Role / Timing Role: Polarity protection and commutation path isolation in H-bridge or single-FET drive topologies.

Use Value: –65°C to +150°C operating range supports deployment in factory-floor enclosures with wide ambient swings.

Use Scenario: Suppresses inductive kickback across relay coils or solenoid drivers in PLC I/O modules.

IC Role / Device Role / Timing Role: Freewheeling path for stored magnetic energy during coil de-energization.

Use Value: 100V V_RRM safely clamps typical 24V/48V control circuit transients without avalanche stress.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5401-T	Same electrical specs; tape-and-reel packaging (1.2K/reel) vs. bulk (500/unit)	Optimized for automated SMT placement; requires reel-handling infrastructure	Select for high-volume production lines using pick-and-place equipment.
1N5402-B	Higher 200V V_RRM; identical I_O, V_F, I_FSM, package, and thermal specs	Supports higher AC input voltages (e.g., 120V RMS systems); no change to layout or thermal design	Choose when system-level voltage margin exceeds 100V or long-term reliability under overvoltage is critical.

Compared with 1N5401-T and 1N5402-B, the 1N5401-B offers optimal cost-per-unit for manual or low-volume assembly while maintaining full functional equivalence in 100V-class rectification - whereas 1N5402-B extends voltage headroom without altering footprint or thermal behavior.

Availability

1N5401-B is available at Aetrix Electronics and suitable for AC/DC power supplies, battery chargers, and DC motor control circuits requiring stable component supply and long-lifecycle support.

Supply support for 1N5401-B 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, specializing in high-reliability power management, signal integrity, and protection devices.

The S3A–S3M series - including the 1N5400–1N5408 family - was engineered for cost-effective, high-surge-capability general-purpose rectification in industrial and consumer power conversion.

FAQ

Is the 1N5401-B RoHS compliant?

Yes, the 1N5401-B features lead-free finish and is RoHS compliant per EU Directive Annex Notes 5 and 7, with exemptions applied for glass and high-temperature solder. Tin-plated leads meet MIL-STD-202 Method 208 solderability requirements and UL 94V-0 flammability rating.

What is the maximum operating temperature for continuous use?

The 1N5401-B supports continuous operation up to +105°C ambient temperature at its rated 3.0A average forward current, provided leads are maintained at ambient temperature at a distance of 9.5mm from the case. Junction temperature must not exceed +150°C under any condition.

Can the 1N5401-B be used in full-wave bridge configurations?

Yes - four 1N5401-B diodes can be assembled into a discrete full-wave bridge rectifier. Each device handles one quadrant; the 100V V_RRM rating supports input voltages up to 70V RMS. Ensure adequate PCB copper area and airflow to manage 3.0A × 1.0V = 3.0W total dissipation per diode at full load.

Why is this part marked "Not Recommended for New Design"?

Diodes Incorporated issued this designation because newer surface-mount alternatives (e.g., S3A–S3M series) offer comparable performance in smaller footprints with improved thermal profiles. The 1N5401-B remains fully qualified and supported for legacy repair, maintenance, and cost-sensitive through-hole designs where DO-201AD form factor is required.

1N5401-B Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Bulk

Product Status:: Obsolete

Technology:: Standard

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

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 3 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 100 V

Capacitance @ Vr, F:: 50pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

Operating Temperature - Junction:: -65°C ~ 150°C

1N5401-B FAQ

1.How can I place an order for 1N5401-B through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5401-B 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 1N5401-B reliable?

The price and inventory of 1N5401-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5401-B is usually 5 days.

3.What payment methods are accepted for 1N5401-B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5401-B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5401-B?

1N5401-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5401-B 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 1N5401-B?

For technical support, including 1N5401-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5401-B requirements.

6.How does Aetrix verify that 1N5401-B is sourced from the original manufacturer or authorized distributors?

All 1N5401-B 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 1N5401-B meets industry standards.

7.What is the process for return or replacement of 1N5401-B?

All 1N5401-B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5401-B, 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 1N5401-B part is unused and in its original packaging.

Return procedure for 1N5401-B:

1.Submit a request within 90 days.

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

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