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

Taiwan Semiconductor Corporation 1N4935GHR0G

Name: 1N4935GHR0G
Brand: Taiwan Semiconductor Corporation
SKU: 1N4935GHR0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4935GHR0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

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

Datasheet:: 1N4935GHR0G.pdf

Description:: DIODE GEN PURP 200V 1A DO204AL

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Product details

Overview

1N4935GHR0G from Taiwan Semiconductor is a fast recovery rectifier diode with 200 V repetitive peak reverse voltage (V_RRM), 1 A average forward current (I_F), and 200 ns reverse recovery time (t_rr), used in DC-DC converters and switching-mode power supplies for efficient unidirectional current control.

For engineers reviewing the 1N4935GHR0G datasheet, 1N4935GHR0G pinout, 1N4935GHR0G application, or 1N4935GHR0G equivalent, key selection criteria include V_RRM = 200 V, I_F = 1 A, t_rr ≤ 200 ns, V_F ≤ 1.2 V at 1 A, and DO-41 package compatibility with high-surge (I_FSM = 30 A) requirements.

Technical Context

This device is a single-die, silicon planar junction fast recovery rectifier optimized for high-frequency switching applications where low forward voltage drop and rapid turn-off reduce conduction and switching losses. Its 200 ns t_rr and 10 pF junction capacitance support operation up to several hundred kHz in SMPS topologies.

The 1N4935GHR0G operates across -55°C to +150°C junction temperature range, with thermal resistance R_θJA = 65°C/W, enabling reliable performance in compact, thermally constrained PCB layouts without forced cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum non-repetitive reverse voltage the diode blocks without breakdown; defines usable input voltage range in flyback or boost converters.
I_F	1 A - Continuous average forward current rating; sets maximum steady-state output current capability in rectification stage.
t_rr	200 ns - Measured under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; determines minimum switching frequency before excessive reverse recovery loss.
V_F	≤1.2 V at 1 A, 25°C - Forward voltage drop directly impacts conduction loss and thermal rise in high-duty-cycle operation.
I_FSM	30 A - Peak non-repetitive surge current (8.3 ms half-sine); supports cold-start and transient overload conditions without failure.
Junction Temp	-55°C to +150°C - Operational temperature envelope enabling use in automotive under-hood and industrial ambient environments.
R_θJA	65°C/W - Thermal resistance from junction to ambient in free-air; informs heatsinking needs for sustained 1 A operation.

Pinout & Package

Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with cathode band marking; RoHS-compliant, halogen-free, UL 94V-0 rated compound; pure tin-plated leads, J-STD-002 solderable.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) during conduction phase.
Cathode	Forward current exit / reverse blocking terminal	Marked by colored band; ties to output filter capacitor positive rail; sustains 200 V reverse bias during off-state.

Key Features

Feature	Design Value
Fast recovery (t_rr ≤ 200 ns)	Enables efficient operation in 50–500 kHz switching converters by minimizing reverse recovery charge and associated switching loss.
Low V_F (≤1.2 V @ 1 A)	Reduces power dissipation and thermal stress compared to standard rectifiers, supporting higher efficiency in space-constrained designs.
High surge rating (I_FSM = 30 A)	Withstands inrush currents during power-up or line transients without degradation-critical for industrial AC/DC front-ends.
DO-41 package with JESD201 Class 2 whisker resistance	Ensures long-term reliability in vibration-prone or high-humidity environments, including automotive auxiliary systems.

Applications

AC-DC Adapter Rectification	DC-DC Converter Output Stage
Use Scenario: Converts rectified AC to regulated DC in wall adapters for consumer electronics (e.g., routers, set-top boxes). IC Role / Device Role / Timing Role: Unidirectional current valve on secondary side; conducts only during positive half-cycles of transformer output. Use Value: 200 ns t_rr minimizes switching loss at 65–130 kHz operating frequencies; 1.2 V V_F limits heat generation in sealed enclosures.	Use Scenario: Freewheeling path in synchronous or non-synchronous buck converters powering FPGA I/O rails or microcontroller cores. IC Role / Device Role / Timing Role: Provides low-loss return path for inductor current when main switch is off; defines output voltage ripple via conduction timing. Use Value: 30 A I_FSM handles load-step transients; DO-41 footprint allows manual rework and cost-effective through-hole assembly.
Automotive Body Control Module Power Supply	Industrial Sensor Signal Conditioning Front-End
Use Scenario: Input rectification in 12 V battery-fed BCM power rails, exposed to load dump and cold-crank conditions. IC Role / Device Role / Timing Role: Primary AC/DC interface component; blocks reverse polarity and clamps surge energy during transients. Use Value: -55°C to +150°C operating range meets AEC-Q101 environmental stress requirements; 200 V V_RRM accommodates 30 V load dump peaks.	Use Scenario: Isolation and level-shifting in analog sensor signal chains (e.g., pressure or temperature transducers) powered from 24 V industrial buses. IC Role / Device Role / Timing Role: Polarity protection and ESD clamp at signal input; prevents damage from reverse connection or field-induced surges. Use Value: 5 µA max reverse leakage at 25°C ensures minimal offset error; 10 pF C_J avoids signal integrity degradation at <1 MHz bandwidths.

AC-DC Adapter Rectification

DC-DC Converter Output Stage

Use Scenario: Converts rectified AC to regulated DC in wall adapters for consumer electronics (e.g., routers, set-top boxes).

IC Role / Device Role / Timing Role: Unidirectional current valve on secondary side; conducts only during positive half-cycles of transformer output.

Use Value: 200 ns t_rr minimizes switching loss at 65–130 kHz operating frequencies; 1.2 V V_F limits heat generation in sealed enclosures.

Use Scenario: Freewheeling path in synchronous or non-synchronous buck converters powering FPGA I/O rails or microcontroller cores.

IC Role / Device Role / Timing Role: Provides low-loss return path for inductor current when main switch is off; defines output voltage ripple via conduction timing.

Use Value: 30 A I_FSM handles load-step transients; DO-41 footprint allows manual rework and cost-effective through-hole assembly.

Automotive Body Control Module Power Supply

Industrial Sensor Signal Conditioning Front-End

Use Scenario: Input rectification in 12 V battery-fed BCM power rails, exposed to load dump and cold-crank conditions.

IC Role / Device Role / Timing Role: Primary AC/DC interface component; blocks reverse polarity and clamps surge energy during transients.

Use Value: -55°C to +150°C operating range meets AEC-Q101 environmental stress requirements; 200 V V_RRM accommodates 30 V load dump peaks.

Use Scenario: Isolation and level-shifting in analog sensor signal chains (e.g., pressure or temperature transducers) powered from 24 V industrial buses.

IC Role / Device Role / Timing Role: Polarity protection and ESD clamp at signal input; prevents damage from reverse connection or field-induced surges.

Use Value: 5 µA max reverse leakage at 25°C ensures minimal offset error; 10 pF C_J avoids signal integrity degradation at <1 MHz bandwidths.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R02U	V_RRM = 200 V, t_rr = 150 ns, V_F = 1.05 V @ 1 A - faster recovery and lower V_F, but TO-220AC package (larger footprint, higher thermal mass)	Preferred in high-efficiency, thermally managed designs where board area permits larger package; not suitable for DO-41 footprint constraints.	Select when optimizing for lowest conduction + switching loss and layout allows TO-220 mounting.
ON Semiconductor MUR120	V_RRM = 200 V, t_rr = 75 ns, V_F = 1.15 V @ 1 A - significantly faster recovery, same DO-41 package, but higher cost and tighter process control.	Better suited for >300 kHz resonant converters or noise-sensitive instrumentation where ultra-low Q_rr is critical.	Choose when 75 ns t_rr is required to meet EMI targets or improve light-load efficiency in high-frequency SMPS.

Compared with STTH1R02U and MUR120, the 1N4935GHR0G offers balanced performance in the DO-41 form factor-lower cost than MUR120, smaller footprint than STTH1R02U-making it optimal for cost-sensitive, medium-frequency (<200 kHz) industrial and consumer power supplies requiring proven reliability and AEC-Q101 readiness.

Availability

1N4935GHR0G is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and general-purpose rectification requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for 1N4935GHR0G 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, analog ICs, and optoelectronics, headquartered in Hsinchu, Taiwan.

The 1N4935GHR0G belongs to TSC's AEC-Q101-qualified fast recovery rectifier family, engineered for robustness in automotive body electronics and industrial power conversion where reliability under thermal and surge stress is mandatory.

FAQ

What is the peak repetitive reverse voltage rating for the 1N4935GHR0G?

The 1N4935GHR0G has a repetitive peak reverse voltage (V_RRM) rating of 200 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version I2104), where 1N4935G is explicitly assigned 200 V under the V_RRM column. It defines the maximum reverse-bias voltage the device can block repeatedly without avalanche breakdown.

Does the 1N4935GHR0G meet AEC-Q101 qualification standards?

Yes, the "H" suffix in 1N4935GHR0G indicates AEC-Q101 qualification per Taiwan Semiconductor's ordering code nomenclature (as documented in the Ordering Information section). The device undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life to ensure suitability for automotive electronic modules.

What is the reverse recovery time (t_rr) specification for the 1N4935GHR0G?

The 1N4935GHR0G has a maximum reverse recovery time (t_rr) of 200 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is specified in the Electrical Specifications table and reflects its classification as a fast recovery rectifier suitable for switching frequencies up to ~200 kHz.

Is the 1N4935GHR0G supplied in tape-and-reel packaging?

Yes, the 1N4935GHR0G is available in tape-and-reel packaging: 5,000 units per reel. This is indicated by the "R0G" suffix in the part number and confirmed in the Ordering Information table, where "1N493xG" and "1N493xGH" variants are listed with "5,000 / Tape & Reel" packing option.

What is the forward voltage drop of the 1N4935GHR0G at rated current?

The 1N4935GHR0G exhibits a maximum forward voltage (V_F) of 1.2 V at I_F = 1 A and T_J = 25°C, as specified in the Electrical Specifications table. This parameter directly influences conduction loss and thermal design margin in continuous-duty rectifier applications.

1N4935GHR0G 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):: 200 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 @ 200 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

1N4935GHR0G FAQ

1.How can I place an order for 1N4935GHR0G through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4935GHR0G 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 1N4935GHR0G reliable?

The price and inventory of 1N4935GHR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4935GHR0G is usually 5 days.

3.What payment methods are accepted for 1N4935GHR0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4935GHR0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4935GHR0G?

1N4935GHR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4935GHR0G 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 1N4935GHR0G?

For technical support, including 1N4935GHR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4935GHR0G requirements.

6.How does Aetrix verify that 1N4935GHR0G is sourced from the original manufacturer or authorized distributors?

All 1N4935GHR0G 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 1N4935GHR0G meets industry standards.

7.What is the process for return or replacement of 1N4935GHR0G?

All 1N4935GHR0G units undergo pre-shipment inspection (PSI). If there is an issue with 1N4935GHR0G, 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 1N4935GHR0G part is unused and in its original packaging.

Return procedure for 1N4935GHR0G:

1.Submit a request within 90 days.

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

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