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

Diodes Incorporated 1N4933GL-T

Name: 1N4933GL-T
Brand: Diodes Incorporated
SKU: 1N4933GL-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4933GL-T

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

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

Datasheet:: 1N4933GL-T.pdf

Description:: DIODE GEN PURP 50V 1A DO41

Quantity:: RFQ Add To RFQ list

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Inventory:7,580

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Product details

Overview

1N4933GL-T from Diodes Incorporated is a 1.0A fast recovery glass passivated rectifier diode in DO-41 package, rated for 50V peak repetitive reverse voltage (V_RRM), 1.2V forward voltage at 1.0A, and 200ns reverse recovery time - deployed in AC/DC input stage rectification for low-cost offline power supplies.

For engineers reviewing the 1N4933GL-T datasheet, 1N4933GL-T pinout, 1N4933GL-T application, or 1N4933GL-T equivalent, key selection criteria include V_RRM margin vs. line surge, thermal derating at 75°C ambient, I_FSM capability under 8.3ms half-sine surge, and DO-41 lead-form compatibility with through-hole PCB layouts.

Technical Context

This discrete rectifier uses a diffused junction and glass passivated die construction to achieve fast switching (t_rr = 200 ns) and stable leakage performance (I_R = 5.0 µA @ 25°C). Its 1.0A average forward current rating assumes 9.5mm lead length at ambient temperature.

The device operates across –65°C to +150°C junction range, with thermal resistance R_θJA = 100 K/W and junction capacitance C_j = 15 pF @ 1 MHz / 4 V. Surge rating of 30A (8.3 ms half-sine) supports inrush handling in unregulated AC adapters.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum non-repetitive reverse voltage before breakdown; sets minimum clearance for 24–36 VAC input designs.
I_O	1.0 A @ T_A = 75°C - Continuous DC output current limit with standard PC-board mounting and 9.5 mm lead length.
V_F	1.2 V @ I_F = 1.0 A - Forward conduction loss directly impacts efficiency and thermal rise in linear or flyback secondary rectification.
t_rr	200 ns - Reverse recovery time determines switching losses and EMI generation in high-frequency rectifier applications.
I_FSM	30 A (8.3 ms) - Single half-sine surge withstand capability; critical for cold-start inrush in capacitive-input supplies.
C_j	15 pF @ 1 MHz, 4 V - Junction capacitance affects high-frequency noise coupling and snubber design in SMPS outputs.

Pinout & Package

Package: DO-41 molded plastic case (UL 94V-0), axial leads with cathode band marking. Weight: ~0.35 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to AC source or transformer secondary; polarity-sensitive for correct rectification direction.
Cathode	Forward current exit point	Marked by band; ties to positive rail or filter capacitor; defines output polarity in bridge or half-wave configuration.

Key Features

Feature	Design Value
Glass passivated die	Enables stable IR performance and long-term reliability under humidity and thermal cycling stress.
Fast recovery (200 ns)	Reduces switching loss and diode-induced ringing in 20–100 kHz SMPS secondary-side rectifiers.
30A surge rating	Supports repeated cold-start events without degradation in low-cost wall adapters and LED drivers.
DO-41 axial package	Compatible with legacy wave-solder and hand-solder processes; enables direct replacement in existing through-hole designs.

Applications

AC/DC Wall Adapters

Industrial Control Power Supplies

Use Scenario: 24 VAC input converted to 12 VDC for PLC I/O modules using half-wave rectification and bulk capacitance.

IC Role / Device Role / Timing Role: Primary rectifier converting AC line to pulsating DC; handles 50/60 Hz input with minimal conduction loss.

Use Value: 1.2 V V_F limits heat generation at 1 A load, while 50 V V_RRM provides 2× safety margin over peak 24 VAC (34 V).

Use Scenario: Rectifying 36 VAC control transformer output in motor starter cabinets with high ambient temperature (>70°C).

IC Role / Device Role / Timing Role: Input-stage diode in unregulated linear supply feeding relay coils and status LEDs.

Use Value: Rated I_O = 1.0 A @ 75°C ensures continuous operation without derating in enclosed enclosures.

LED Driver Secondary Side

Low-Power HVAC Sensors

Use Scenario: Output rectification in 5 W flyback LED driver powering 12 V string arrays in commercial downlights.

IC Role / Device Role / Timing Role: Secondary-side freewheeling/rectifier diode operating at 65 kHz switching frequency.

Use Value: 200 ns t_rr minimizes reverse recovery loss and associated EMI during MOSFET turn-on transitions.

Use Scenario: Half-wave rectification of 12 VAC thermostat signal in battery-backed HVAC sensor nodes.

IC Role / Device Role / Timing Role: Signal-level AC-to-DC conversion for microcontroller ADC reference or logic-level detection.

Use Value: Low 5.0 µA I_R at 25°C prevents signal leakage that could corrupt low-current analog sensing paths.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4933G-T	Same electrical specs and DO-41 package; no tape-and-reel packaging - requires manual loading.	Identical use in prototyping and low-volume production where reel feed is unnecessary.	Select when prioritizing lowest unit cost and board-level assembly flexibility over automated placement.
STTH1R06U	Higher V_RRM (600 V), lower V_F (1.05 V), SOD-123FL package - surface-mount, not pin-compatible.	Suitable for higher-line-voltage designs (e.g., 115/230 VAC universal inputs) and space-constrained PCBs.	Choose only if redesigning for SMT and requiring >50 V blocking or improved efficiency at 1 A.

Compared with 1N4933G-T and STTH1R06U, the 1N4933GL-T uniquely balances tape-and-reel automation readiness, DO-41 through-hole compatibility, and verified 50 V/1 A performance for cost-sensitive 24–36 VAC systems - making it optimal for volume manufacturing of legacy-compatible power supplies.

Availability

1N4933GL-T is available at Aetrix Electronics and suitable for AC/DC wall adapters, industrial control power supplies, and LED driver secondary-side rectification requiring stable component supply and DO-41 through-hole compatibility.

Supply support for 1N4933GL-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, specializing in high-reliability, cost-optimized components for power management and signal integrity.

The 1N4933GL-T belongs to the 1N493xG fast recovery rectifier family, engineered for high-efficiency, low-cost AC/DC conversion in consumer and industrial power supplies where robust surge handling and thermal stability are essential.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The 1N4933GL-T has an operating junction temperature range of –65°C to +150°C. For continuous DC operation at full 1.0 A, thermal design must ensure T_J stays within this limit - typically achieved with 9.5 mm lead length and adequate PCB copper area per the derating curve in Figure 1.

Is the 1N4933GL-T suitable for use in a capacitive-input filter configuration?

No - the datasheet explicitly states that current must be derated by 20% for capacitive loads. In such configurations, peak current stresses exceed the 1.0 A average rating, risking premature failure; use a higher-current diode like 1N540x or add inrush limiting.

Does the "L" in 1N4933GL-T indicate a different electrical specification than 1N4933G-T?

No - the "L" denotes tape-and-reel packaging with 5,000 units per reel on 13-inch reels; all electrical, thermal, and mechanical specifications match those of the 1N4933G-T and bare 1N4933G variants.

Can this diode replace a 1N4001 in an existing design?

Yes - the 1N4933GL-T offers faster recovery (200 ns vs. 30 µs), lower V_F (1.2 V vs. 1.1 V), and identical DO-41 package and 50 V V_RRM, enabling direct drop-in replacement where reduced switching loss or improved efficiency is needed.

1N4933GL-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:: 1.2 V @ 1 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 200 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 50 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-41

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

1N4933GL-T FAQ

1.How can I place an order for 1N4933GL-T through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4933GL-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 1N4933GL-T reliable?

The price and inventory of 1N4933GL-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4933GL-T is usually 5 days.

3.What payment methods are accepted for 1N4933GL-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4933GL-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4933GL-T?

1N4933GL-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4933GL-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 1N4933GL-T?

For technical support, including 1N4933GL-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4933GL-T requirements.

6.How does Aetrix verify that 1N4933GL-T is sourced from the original manufacturer or authorized distributors?

All 1N4933GL-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 1N4933GL-T meets industry standards.

7.What is the process for return or replacement of 1N4933GL-T?

All 1N4933GL-T units undergo pre-shipment inspection (PSI). If there is an issue with 1N4933GL-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 1N4933GL-T part is unused and in its original packaging.

Return procedure for 1N4933GL-T:

1.Submit a request within 90 days.

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

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