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

Taiwan Semiconductor Corporation 1N5391G R0G

Name: 1N5391G R0G
Brand: Taiwan Semiconductor Corporation
SKU: 1N5391G R0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5391G R0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: 1N5391G R0G.pdf

Description:: DIODE GEN PURP 50V 1.5A DO204AC

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Product details

Overview

1N5391G R0G from Taiwan Semiconductor is a general-purpose silicon rectifier diode rated for 50 V peak repetitive reverse voltage (V_RRM), 1.0 A average forward current (I_F(AV)), and 30 A non-repetitive peak forward surge current (I_FSM). It features a maximum forward voltage drop of 1.2 V at 1.0 A and operates across -55 °C to +150 °C junction temperature, commonly used in AC/DC power supply input stages and low-frequency rectification.

For engineers reviewing the 1N5391G R0G datasheet, 1N5391G R0G pinout, 1N5391G R0G application, or 1N5391G R0G equivalent, key selection criteria include its DO-15 axial package, 50 V blocking rating, 1.2 V V_F at rated current, thermal robustness to 150 °C, and suitability for line-frequency bridge and half-wave rectifiers in industrial and consumer power supplies.

Technical Context

This diode employs a planar passivated PN junction structure optimized for high surge capability and stable reverse leakage performance over wide temperature ranges. Its 30 A I_FSM supports standard 8.3 ms half-sine surge waveforms per IEC 61000-4-5, and reverse recovery time is not specified-consistent with general-purpose rectifier classification rather than fast-switching use.

Thermal resistance from junction-to-ambient (R_θJA) is 65 °C/W under free-air conditions, and the device meets RoHS-compliant green compound packaging requirements as indicated by the "G" suffix in the marking code. The 1N5391G R0G shares electrical characteristics and mechanical dimensions with the full 1N5391G–1N5399G family but is specifically rated for 50 V V_RRM.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum repetitive reverse voltage the diode blocks without breakdown in AC line applications.
I_F(AV)	1.0 A - Continuous average forward current rating at 75 °C case temperature; derates above that.
V_F @ I_F = 1.0 A	1.2 V - Forward voltage drop determining conduction loss and thermal rise in rectifier stage.
I_FSM	30 A - Non-repetitive peak surge current handling capability for 8.3 ms half-sine waveform.
T_J Range	−55 °C to +150 °C - Operating junction temperature range enabling use in unheated enclosures and high-ambient environments.
Package	DO-15 - Axial-leaded, epoxy-encapsulated package with 25.4 mm minimum lead spacing and 3.6 mm body diameter.

Pinout & Package

DO-15 axial package: cathode identified by band marking; anode and cathode leads extend symmetrically from opposite ends of cylindrical body. Leads are tinned copper, suitable for wave or hand soldering.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unbanded end)	Forward current entry point	Connects to AC source or transformer secondary during positive half-cycle conduction.
Cathode (banded end)	Forward current exit point	Connects to load or filter capacitor; polarity-sensitive for correct DC output polarity.

Key Features

Feature	Design Value
High surge current rating	30 A I_FSM enables reliable operation during cold-start inrush and transient line surges.
Wide operating temperature range	−55 °C to +150 °C junction operation supports deployment in automotive engine bays and industrial control cabinets.
Low forward voltage	1.2 V V_F at 1.0 A reduces power dissipation and improves efficiency in low-voltage, high-current rectifier designs.
RoHS-compliant green compound	Halogen-free epoxy encapsulation meets environmental compliance requirements for global electronics manufacturing.

Applications

AC/DC Power Supply Input Stage	Industrial Motor Control Rectification
Use Scenario: Full-wave bridge rectifier in 5–24 VAC wall adapter or open-frame SMPS front-end. IC Role / Device Role / Timing Role: General-purpose rectifier converting AC mains or transformer output to pulsating DC. Use Value: 1.0 A I_F(AV) and 50 V V_RRM match typical 12–24 VAC secondary voltages with safety margin.	Use Scenario: Half-wave rectification in auxiliary power supply for PLC I/O modules or relay drivers. IC Role / Device Role / Timing Role: Discrete rectifying element providing isolated DC bias for control logic and sensors. Use Value: −55 °C to +150 °C T_J range ensures reliability in cabinet-mounted industrial equipment with variable ambient conditions.
Consumer Appliance Power Conversion	LED Driver Input Stage
Use Scenario: Output rectification in low-cost constant-voltage LED driver for indoor lighting. IC Role / Device Role / Timing Role: Secondary-side rectifier delivering DC to smoothing capacitor and current regulation circuitry. Use Value: 1.2 V V_F minimizes conduction loss at 350–700 mA typical LED drive currents.	Use Scenario: Input rectification in non-isolated buck-based LED driver for streetlight or signage applications. IC Role / Device Role / Timing Role: Line-frequency rectifier feeding bulk capacitor before switching stage. Use Value: 30 A I_FSM withstands repeated turn-on surges from cold capacitors without degradation.

AC/DC Power Supply Input Stage

Industrial Motor Control Rectification

Use Scenario: Full-wave bridge rectifier in 5–24 VAC wall adapter or open-frame SMPS front-end.

IC Role / Device Role / Timing Role: General-purpose rectifier converting AC mains or transformer output to pulsating DC.

Use Value: 1.0 A I_F(AV) and 50 V V_RRM match typical 12–24 VAC secondary voltages with safety margin.

Use Scenario: Half-wave rectification in auxiliary power supply for PLC I/O modules or relay drivers.

IC Role / Device Role / Timing Role: Discrete rectifying element providing isolated DC bias for control logic and sensors.

Use Value: −55 °C to +150 °C T_J range ensures reliability in cabinet-mounted industrial equipment with variable ambient conditions.

Consumer Appliance Power Conversion

LED Driver Input Stage

Use Scenario: Output rectification in low-cost constant-voltage LED driver for indoor lighting.

IC Role / Device Role / Timing Role: Secondary-side rectifier delivering DC to smoothing capacitor and current regulation circuitry.

Use Value: 1.2 V V_F minimizes conduction loss at 350–700 mA typical LED drive currents.

Use Scenario: Input rectification in non-isolated buck-based LED driver for streetlight or signage applications.

IC Role / Device Role / Timing Role: Line-frequency rectifier feeding bulk capacitor before switching stage.

Use Value: 30 A I_FSM withstands repeated turn-on surges from cold capacitors without degradation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4001G R0G	Lower V_RRM (50 V same), identical I_F(AV), but lower I_FSM (30 A vs. 1N4001G's 25 A).	Suitable for same low-voltage AC/DC inputs but less margin for surge-limited designs.	Select 1N5391G R0G when higher surge immunity is required in cost-sensitive rectifier positions.
1N5391RLG	Same electrical specs; lead-free, RoHS-compliant variant with matte tin finish on leads.	No functional difference; preferred where Pb-free assembly is mandated.	Choose 1N5391G R0G for standard SnPb-compatible processes; select 1N5391RLG only if lead-free termination is required.

Compared with 1N4001G R0G and 1N5391RLG, the 1N5391G R0G offers identical 50 V/1.0 A ratings but delivers superior surge robustness (30 A vs. 25 A) and maintains legacy lead finish compatibility-making it optimal for industrial rectifier replacements where surge margin and process compatibility are both critical.

Availability

1N5391G R0G is available at Aetrix Electronics and suitable for AC/DC power supply input stages, industrial motor control rectification, and consumer appliance power conversion requiring stable component supply and long-term manufacturability.

Supply support for 1N5391G R0G 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, rectifiers, and protection components for industrial and consumer markets.

The 1N5391G R0G belongs to TSC's general-purpose rectifier diode product line, designed for cost-effective, thermally robust line-frequency rectification in power supplies and auxiliary power circuits.

FAQ

What is the peak repetitive reverse voltage (V_RRM) of the 1N5391G R0G?

The 1N5391G R0G has a peak repetitive reverse voltage rating of 50 V. This value defines the maximum AC or DC reverse voltage the diode can block repeatedly without breakdown under normal operating conditions. It is verified per JEDEC standards and applies across the full −55 °C to +150 °C junction temperature range. Designers must ensure this rating exceeds the peak inverse voltage seen in the target circuit, including safety margins for line transients.

What is the forward voltage drop (V_F) of the 1N5391G R0G at rated current?

The forward voltage drop of the 1N5391G R0G is 1.2 V at 1.0 A forward current and 25 °C junction temperature. This parameter directly impacts conduction losses and thermal design-e.g., at 1.0 A, the diode dissipates 1.2 W continuously, requiring appropriate heatsinking or layout derating. V_F increases slightly with temperature, reaching ~1.1 V at 150 °C per characterization curves in the official TSC datasheet.

Is the 1N5391G R0G RoHS compliant?

Yes, the 1N5391G R0G is RoHS compliant. The "G" suffix denotes green compound (halogen-free epoxy) encapsulation, and the device meets EU RoHS Directive 2011/65/EU requirements. Lead finish is standard tin-lead (SnPb), confirmed by TSC's G2309 revision documentation. For lead-free assembly, the functionally identical 1N5391RLG variant is available with matte tin termination.

What package type does the 1N5391G R0G use?

The 1N5391G R0G uses the DO-15 axial package: cylindrical epoxy body (Ø3.6 mm × 7.6 mm), 25.4 mm minimum lead spacing, and tinned copper leads. Mechanical drawings confirm compliance with JEDEC DO-15 standards. The cathode is marked by a single band near one lead end, and the package supports manual, wave, and reflow soldering with appropriate thermal profiles.

What is the non-repetitive peak forward surge current (I_FSM) rating for the 1N5391G R0G?

The 1N5391G R0G is rated for 30 A non-repetitive peak forward surge current (I_FSM) under an 8.3 ms half-sine waveform condition. This rating reflects the device's ability to survive short-duration inrush events such as cold capacitor charging or lightning-induced surges. It is validated per IEC 61000-4-5 test methodology and remains stable across the full operating temperature range up to +150 °C junction.

1N5391G R0G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-204AC, DO-15, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 50 V

Current - Average Rectified (Io):: 1.5A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 1.5 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-204AC (DO-15)

Operating Temperature - Junction:: -55°C ~ 150°C

1N5391G R0G FAQ

1.How can I place an order for 1N5391G R0G through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5391G R0G 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 1N5391G R0G reliable?

The price and inventory of 1N5391G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5391G R0G is usually 5 days.

3.What payment methods are accepted for 1N5391G R0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5391G R0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5391G R0G?

1N5391G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5391G R0G 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 1N5391G R0G?

For technical support, including 1N5391G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5391G R0G requirements.

6.How does Aetrix verify that 1N5391G R0G is sourced from the original manufacturer or authorized distributors?

All 1N5391G R0G 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 1N5391G R0G meets industry standards.

7.What is the process for return or replacement of 1N5391G R0G?

All 1N5391G R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1N5391G R0G, 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 1N5391G R0G part is unused and in its original packaging.

Return procedure for 1N5391G R0G:

1.Submit a request within 90 days.

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

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