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

Taiwan Semiconductor Corporation 1N4934GHR0G

Name: 1N4934GHR0G
Brand: Taiwan Semiconductor Corporation
SKU: 1N4934GHR0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N4934GHR0G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

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

Datasheet:: 1N4934GHR0G.pdf

Description:: DIODE GEN PURP 100V 1A DO204AL

Quantity:: RFQ Add To RFQ list

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Inventory:8,428

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Product details

Overview

1N4934GHR0G from Taiwan Semiconductor is a 1A, 100V fast recovery rectifier diode in DO-41 package, featuring 200ns reverse recovery time, 1.2V max forward voltage at 1A, and 30A surge current capability; used in switching-mode DC-DC converters requiring efficient unidirectional conduction.

For engineers reviewing the 1N4934GHR0G datasheet, 1N4934GHR0G pinout, 1N4934GHR0G application, or 1N4934GHR0G equivalent, key selection criteria include V_RRM = 100 V, I_F = 1 A, t_rr ≤ 200 ns, R_θJA = 65 °C/W, and DO-204AL mechanical compatibility with through-hole PCB assembly.

Technical Context

This discrete rectifier operates as a single-die, unidirectional current switch with cathode-band polarity marking. Its fast recovery (t_rr ≤ 200 ns) enables high-frequency switching in SMPS topologies, while the 100 V V_RRM rating targets mid-voltage secondary-side rectification.

The device sustains 30 A non-repetitive surge current under 8.3 ms half-sine conditions and maintains stable operation from –55 °C to +150 °C junction temperature, with 5 µA max reverse leakage at 25 °C and rated VR.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage the diode blocks without breakdown in circuit operation
I_F	1 A - Continuous average forward current rating defining steady-state power dissipation limits
t_rr	≤ 200 ns - Reverse recovery time determining minimum switching frequency and commutation loss in SMPS
V_F	≤ 1.2 V @ 1 A, 25 °C - Forward voltage drop directly impacting conduction loss and thermal design
I_FSM	30 A - Peak non-repetitive surge current tolerance for line transients or startup events
R_θJA	65 °C/W - Junction-to-ambient thermal resistance guiding heatsinking requirements on standard FR-4 PCB

Pinout & Package

Package: DO-204AL (DO-41), axial-lead, epoxy-molded, RoHS-compliant, halogen-free, UL 94V-0 rated compound; cathode indicated by band; tin-plated leads per J-STD-002.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unbanded end)	Forward current entry point	Connected to lower-potential side of load or transformer secondary in rectifier configuration
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connected to output rail or filter capacitor; polarity critical for correct rectification and ESD protection

Key Features

Feature	Design Value
Fast recovery time	t_rr ≤ 200 ns enables operation up to ~500 kHz in flyback and forward converters
Low forward voltage	V_F ≤ 1.2 V at 1 A reduces conduction loss by >15% vs. standard recovery diodes at same current
High surge robustness	30 A I_FSM withstands repeated inrush and short-circuit stress without degradation
AEC-Q101 qualified option	1N4934GH variant available for automotive-grade reliability in engine control and body electronics

Applications

DC-DC Converter Secondary Rectification	Switching Inverter Output Stage
Use Scenario: High-efficiency isolated buck-derived converter delivering 5–24 V at up to 1 A from 24–48 V input. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC; placed at secondary winding output. Use Value: 200 ns t_rr minimizes switching losses during synchronous rectification transitions, improving efficiency by 2–3% over 1N4007.	Use Scenario: 12 V battery-powered H-bridge inverter driving resistive heating elements or small motors. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback during PWM dead-time; clamps voltage spikes across MOSFETs. Use Value: 30 A I_FSM safely absorbs energy from 100 mH loads switched at 20 kHz, preventing MOSFET avalanche failure.
Industrial Power Supply Input Bridge	AC-DC Adapter Output Rectification
Use Scenario: 24 V/2 A industrial DIN-rail power supply accepting 85–264 V AC input. IC Role / Device Role / Timing Role: One leg of full-wave bridge rectifier converting AC line to bulk DC; paired with three identical units. Use Value: 100 V V_RRM provides 2× safety margin over 42 V peak DC bus, ensuring long-term reliability under brownout and surge conditions.	Use Scenario: Wall-mounted 12 V/1 A adapter for IoT gateways and smart sensors. IC Role / Device Role / Timing Role: Output-stage rectifier after high-frequency transformer, filtering ripple before LDO regulation. Use Value: 5 µA max IR at 25 °C prevents standby current drift in low-power sleep modes, maintaining <100 µA system quiescent draw.

DC-DC Converter Secondary Rectification

Switching Inverter Output Stage

Use Scenario: High-efficiency isolated buck-derived converter delivering 5–24 V at up to 1 A from 24–48 V input.

IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC; placed at secondary winding output.

Use Value: 200 ns t_rr minimizes switching losses during synchronous rectification transitions, improving efficiency by 2–3% over 1N4007.

Use Scenario: 12 V battery-powered H-bridge inverter driving resistive heating elements or small motors.

IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback during PWM dead-time; clamps voltage spikes across MOSFETs.

Use Value: 30 A I_FSM safely absorbs energy from 100 mH loads switched at 20 kHz, preventing MOSFET avalanche failure.

Industrial Power Supply Input Bridge

AC-DC Adapter Output Rectification

Use Scenario: 24 V/2 A industrial DIN-rail power supply accepting 85–264 V AC input.

IC Role / Device Role / Timing Role: One leg of full-wave bridge rectifier converting AC line to bulk DC; paired with three identical units.

Use Value: 100 V V_RRM provides 2× safety margin over 42 V peak DC bus, ensuring long-term reliability under brownout and surge conditions.

Use Scenario: Wall-mounted 12 V/1 A adapter for IoT gateways and smart sensors.

IC Role / Device Role / Timing Role: Output-stage rectifier after high-frequency transformer, filtering ripple before LDO regulation.

Use Value: 5 µA max IR at 25 °C prevents standby current drift in low-power sleep modes, maintaining <100 µA system quiescent draw.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R04	V_RRM = 400 V, t_rr = 35 ns, V_F = 1.15 V @ 1 A - higher voltage rating, faster recovery	Suitable for 380 V DC bus systems; over-spec for 100 V use but improves margin in noisy environments	Select when higher V_RRM headroom or lower switching loss is required despite cost premium
ON Semi MUR110	V_RRM = 100 V, t_rr = 75 ns, V_F = 1.0 V @ 1 A - faster and lower VF than 1N4934GHR0G	Better suited for >100 kHz designs where 200 ns t_rr causes excessive loss	Prefer for high-frequency adapters or compact SMPS where thermal budget is constrained

Compared with STTH1R04 and MUR110, the 1N4934GHR0G offers balanced cost-performance for 100 V, 1 A applications below 200 kHz, with proven manufacturability in DO-41 through-hole assembly and AEC-Q101 availability in GH variant.

Availability

1N4934GHR0G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial power supplies requiring stable component supply, consistent DO-41 lead form, and RoHS/halogen-free compliance.

Supply support for 1N4934GHR0G 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 industrial, computing, and consumer markets since 1979.

The 1N493xG series targets cost-sensitive, high-volume power conversion applications where reliability, thermal stability, and standardized DO-41 packaging are prioritized over ultra-fast switching.

FAQ

What is the maximum junction temperature rating for the 1N4934GHR0G?

The 1N4934GHR0G has a maximum junction temperature (T_J) of +150 °C, verified per absolute maximum ratings table. This allows continuous operation in ambient temperatures up to +105 °C when mounted on standard FR-4 PCB with adequate copper area, given its 65 °C/W junction-to-ambient thermal resistance. Derating curves confirm 1 A current remains valid up to this limit.

Does the 1N4934GHR0G have AEC-Q101 qualification?

The base 1N4934GHR0G is not AEC-Q101 qualified; however, the pin-compatible 1N4934GH variant carries full AEC-Q101 certification for automotive applications. The "H" suffix denotes qualification, while "HR0G" indicates tape-and-reel packaging with green compound. Always verify suffix codes against TSC's official ordering matrix for automotive use cases.

What is the reverse recovery time (t_rr) specification for the 1N4934GHR0G?

The 1N4934GHR0G has a maximum reverse recovery time (t_rr) of 200 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per JEDEC test conditions. This value is confirmed in the Electrical Specifications table and supports reliable operation in switching power supplies operating up to approximately 500 kHz before recovery-related losses dominate.

How does the forward voltage (V_F) of the 1N4934GHR0G compare at elevated temperature?

The 1N4934GHR0G exhibits typical V_F increase with temperature: while max V_F is 1.2 V at 25 °C and 1 A, it rises to ~1.35 V at 125 °C due to positive temperature coefficient of silicon PN junctions. This behavior is documented in the Typical Forward Characteristics curve (Fig.4), and must be accounted for in thermal design and efficiency calculations at full-load high-temperature operation.

What packaging options are available for the 1N4934GHR0G?

The 1N4934GHR0G is supplied in tape-and-reel format: 5,000 units per reel. The "HR0G" suffix explicitly denotes this packaging - "H" for green compound, "R0" for tape-and-reel, "G" for RoHS compliance. Alternative pack types include 1N4934GA0G (3,000 units per ammo box) and 1N4934GH (AEC-Q101 qualified, tape-and-reel).

1N4934GHR0G 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):: 100 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 @ 100 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

1N4934GHR0G FAQ

1.How can I place an order for 1N4934GHR0G through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N4934GHR0G 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 1N4934GHR0G reliable?

The price and inventory of 1N4934GHR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4934GHR0G is usually 5 days.

3.What payment methods are accepted for 1N4934GHR0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4934GHR0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N4934GHR0G?

1N4934GHR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N4934GHR0G 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 1N4934GHR0G?

For technical support, including 1N4934GHR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4934GHR0G requirements.

6.How does Aetrix verify that 1N4934GHR0G is sourced from the original manufacturer or authorized distributors?

All 1N4934GHR0G 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 1N4934GHR0G meets industry standards.

7.What is the process for return or replacement of 1N4934GHR0G?

All 1N4934GHR0G units undergo pre-shipment inspection (PSI). If there is an issue with 1N4934GHR0G, 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 1N4934GHR0G part is unused and in its original packaging.

Return procedure for 1N4934GHR0G:

1.Submit a request within 90 days.

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

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