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

Taiwan Semiconductor Corporation 1N4933GHR0G

Name: 1N4933GHR0G
Brand: Taiwan Semiconductor Corporation
SKU: 1N4933GHR0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4933GHR0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

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

Datasheet:: 1N4933GHR0G.pdf

Description:: DIODE GEN PURP 50V 1A DO204AL

Quantity:: RFQ Add To RFQ list

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Inventory:6,220

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Product details

Overview

1N4933GHR0G from Taiwan Semiconductor is a 1A, 50V fast recovery rectifier diode in DO-41 package, featuring 1.2V max forward voltage at 1A, 200ns reverse recovery time, and 30A surge capability-used in DC-DC converters and switching inverters for efficient unidirectional power conversion.

For engineers reviewing the 1N4933GHR0G datasheet, 1N4933GHR0G pinout, 1N4933GHR0G application, or 1N4933GHR0G equivalent, key selection criteria include V_RRM = 50V, I_F = 1A, t_rr ≤ 200ns, R_θJA = 65°C/W, and AEC-Q101 qualification status (indicated by 'H' suffix).

Technical Context

This single-die, axial-leaded fast recovery rectifier operates with low conduction loss (V_F ≤ 1.2V @ 1A) and rapid charge removal (t_rr ≤ 200ns), enabling high-frequency switching in SMPS topologies. Its 30A non-repetitive surge rating supports transient load handling without thermal runaway.

The device uses pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and meets JESD201 Class 2 whisker resistance. Junction temperature range is –55°C to +150°C, supporting automotive under-hood and industrial ambient conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum repetitive reverse blocking voltage; defines safe DC/peak AC voltage limit in rectification circuits
I_F	1 A - Continuous forward current rating; determines steady-state power dissipation and heatsink requirements
t_rr	≤ 200 ns - Reverse recovery time; critical for minimizing switching losses in ≥50 kHz converters
V_F	≤ 1.2 V @ 1A, 25°C - Forward voltage drop; directly impacts conduction loss and thermal design
I_FSM	30 A - Non-repetitive surge current (8.3 ms half-sine); enables robustness against inrush and fault transients
R_θJA	65 °C/W - Junction-to-ambient thermal resistance; used to calculate junction temperature rise in free-air operation

Pinout & Package

Package: DO-204AL (DO-41), axial leaded, cathode indicated by band. Weight: 0.330 g. Molding compound: UL 94V-0 rated.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of source (e.g., transformer secondary center-tap or switch node)
Cathode	Forward current exit point	Connected to output rail or filter capacitor; polarity marked by visible band on body

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements
Fast recovery (t_rr ≤ 200 ns)	Reduces switching losses and EMI in high-frequency SMPS, enabling >100 kHz operation without excessive heating
Low V_F (≤1.2 V @ 1A)	Lowers conduction loss by ~15% vs. standard recovery diodes, improving efficiency in 12–48 V DC-DC stages
RoHS & halogen-free	Complies with IEC 61249-2-21 and EU RoHS Directive; suitable for green manufacturing and export compliance

Applications

AC-DC Adapter Power Supply	Automotive Body Control Module (BCM)
Use Scenario: Secondary-side rectification in 5–24 W offline flyback adapters powering IoT gateways and smart home hubs. IC Role / Device Role / Timing Role: Fast recovery rectifier converting transformer output to regulated DC; replaces slower 1N400x series to reduce heat and improve light-load efficiency. Use Value: 200 ns t_rr cuts switching loss by 30% vs. 1N4007, allowing smaller heatsinks and higher power density.	Use Scenario: Input rectification for 12 V battery-fed DC-DC converters supplying microcontrollers and CAN transceivers in BCMs. IC Role / Device Role / Timing Role: AEC-Q101-qualified rectifier ensuring long-term reliability in under-dash environments with –40°C to +125°C ambient swings. Use Value: 150°C T_JMAX and JESD201 Class 2 whisker resistance prevent field failures due to thermal cycling or tin migration.
Industrial Motor Drive Auxiliary PSU	Telecom Wall Adapter
Use Scenario: Bias supply rectification for gate drivers and isolated feedback circuits in 3-phase inverter auxiliary power units. IC Role / Device Role / Timing Role: High-surge (30 A I_FSM) rectifier tolerating repeated start-up surges and line transients without degradation. Use Value: 30 A surge rating exceeds IEC 61000-4-5 Level 3 requirements, eliminating need for external TVS clamping in many designs.	Use Scenario: Output rectification in compact 12 V/1.5 A wall adapters for VoIP phones and security cameras. IC Role / Device Role / Timing Role: Low-V_F (≤1.2 V) rectifier minimizing dropout and thermal rise in space-constrained plastic enclosures. Use Value: 1.2 V V_F reduces power loss by 0.12 W vs. 1.35 V alternatives, lowering internal temperature by ~8°C at full load.

AC-DC Adapter Power Supply

Automotive Body Control Module (BCM)

Use Scenario: Secondary-side rectification in 5–24 W offline flyback adapters powering IoT gateways and smart home hubs.

IC Role / Device Role / Timing Role: Fast recovery rectifier converting transformer output to regulated DC; replaces slower 1N400x series to reduce heat and improve light-load efficiency.

Use Value: 200 ns t_rr cuts switching loss by 30% vs. 1N4007, allowing smaller heatsinks and higher power density.

Use Scenario: Input rectification for 12 V battery-fed DC-DC converters supplying microcontrollers and CAN transceivers in BCMs.

IC Role / Device Role / Timing Role: AEC-Q101-qualified rectifier ensuring long-term reliability in under-dash environments with –40°C to +125°C ambient swings.

Use Value: 150°C T_JMAX and JESD201 Class 2 whisker resistance prevent field failures due to thermal cycling or tin migration.

Industrial Motor Drive Auxiliary PSU

Telecom Wall Adapter

Use Scenario: Bias supply rectification for gate drivers and isolated feedback circuits in 3-phase inverter auxiliary power units.

IC Role / Device Role / Timing Role: High-surge (30 A I_FSM) rectifier tolerating repeated start-up surges and line transients without degradation.

Use Value: 30 A surge rating exceeds IEC 61000-4-5 Level 3 requirements, eliminating need for external TVS clamping in many designs.

Use Scenario: Output rectification in compact 12 V/1.5 A wall adapters for VoIP phones and security cameras.

IC Role / Device Role / Timing Role: Low-V_F (≤1.2 V) rectifier minimizing dropout and thermal rise in space-constrained plastic enclosures.

Use Value: 1.2 V V_F reduces power loss by 0.12 W vs. 1.35 V alternatives, lowering internal temperature by ~8°C at full load.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R06	V_RRM = 600 V, t_rr = 75 ns, V_F = 1.15 V @ 1A - higher voltage rating and faster recovery	Targeted at 400 V bus systems (e.g., PFC front-ends); over-specified for 50 V applications	Select when higher V_RRM margin or lower t_rr is required; not drop-in due to different TO-220AC footprint
ON Semi MUR105	V_RRM = 50 V, t_rr = 75 ns, V_F = 1.1 V @ 1A - faster and lower V_F, but not AEC-Q101 qualified	Suitable for commercial-grade SMPS where automotive qualification is unnecessary	Prefer for cost-sensitive consumer power supplies; avoid where AEC-Q101 compliance is mandatory

Compared with STTH1R06 and MUR105, the 1N4933GHR0G offers optimal balance of 50 V rating, AEC-Q101 qualification, DO-41 compatibility, and proven thermal performance-making it the preferred choice for automotive and industrial 12–24 V auxiliary supplies where qualification and form factor are decisive.

Availability

1N4933GHR0G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and automotive body control modules requiring stable component supply across extended production lifecycles.

Supply support for 1N4933GHR0G 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and consumer markets since 1979.

The 1N493xG family is designed specifically for high-reliability, medium-current rectification in automotive and industrial power supplies-emphasizing fast recovery, AEC-Q101 compliance, and robust thermal performance in DO-41 packaging.

FAQ

What is the peak repetitive reverse voltage rating for 1N4933GHR0G?

The 1N4933GHR0G has a peak repetitive reverse voltage (V_RRM) rating of 50 V. This value is specified in the Absolute Maximum Ratings table and defines the maximum DC or sinusoidal peak reverse voltage the diode can block continuously without breakdown. It is strictly limited to 50 V-exceeding this risks avalanche failure or permanent damage. The '33' in the part number explicitly denotes the 50 V grade within the 1N4933G–1N4937G family.

Is 1N4933GHR0G AEC-Q101 qualified?

Yes, the 'H' in the ordering code 1N4933GHR0G indicates AEC-Q101 qualification. Per Taiwan Semiconductor's documentation, devices with the 'H' suffix undergo full stress testing per AEC-Q101 Rev D, including HTGB, HTRB, TC, and ESD. The 'R0G' suffix denotes tape-and-reel packaging (5,000 pcs), but does not affect qualification status-the AEC-Q101 compliance applies to the 1N4933GHR0G device itself.

What is the reverse recovery time (t_rr) of 1N4933GHR0G and how is it measured?

The reverse recovery time (t_rr) of the 1N4933GHR0G is ≤200 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, per the Electrical Specifications table. This parameter reflects the time required for minority carriers to clear after forward conduction ceases, directly impacting switching loss in high-frequency converters. The test circuit and waveform are shown in Figure 6 of the official datasheet.

Does 1N4933GHR0G have a halogen-free construction?

Yes, the 1N4933GHR0G is halogen-free in accordance with IEC 61249-2-21. Taiwan Semiconductor confirms this in the FEATURES section and MECHANICAL DATA, specifying that the molding compound contains no brominated or chlorinated flame retardants. This supports compliance with environmental directives such as China RoHS II and JEITA EG02, and eliminates corrosive gas generation during soldering or end-of-life incineration.

What is the thermal resistance (R_θJA) of 1N4933GHR0G in free air?

The junction-to-ambient thermal resistance (R_θJA) of the 1N4933GHR0G is 65°C/W under natural convection conditions, as stated in the THERMAL PERFORMANCE table. This value assumes the device is mounted in still air with no heatsink or PCB copper area enhancement. For accurate thermal design, derating curves (Figure 1) must be applied-e.g., at 75°C ambient, maximum continuous I_F drops to ~0.75 A.

1N4933GHR0G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

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:: 10pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AL (DO-41)

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

1N4933GHR0G FAQ

1.How can I place an order for 1N4933GHR0G through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4933GHR0G 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 1N4933GHR0G reliable?

The price and inventory of 1N4933GHR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4933GHR0G is usually 5 days.

3.What payment methods are accepted for 1N4933GHR0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4933GHR0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4933GHR0G?

1N4933GHR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4933GHR0G 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 1N4933GHR0G?

For technical support, including 1N4933GHR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4933GHR0G requirements.

6.How does Aetrix verify that 1N4933GHR0G is sourced from the original manufacturer or authorized distributors?

All 1N4933GHR0G 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 1N4933GHR0G meets industry standards.

7.What is the process for return or replacement of 1N4933GHR0G?

All 1N4933GHR0G units undergo pre-shipment inspection (PSI). If there is an issue with 1N4933GHR0G, 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 1N4933GHR0G part is unused and in its original packaging.

Return procedure for 1N4933GHR0G:

1.Submit a request within 90 days.

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

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