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

Taiwan Semiconductor Corporation HT15G

Name: HT15G
Brand: Taiwan Semiconductor Corporation
SKU: HT15G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HT15G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: T-18, Axial

Datasheet:: HT15G.pdf

Description:: DIODE GEN PURP 400V 1A TS-1

Quantity:: RFQ Add To RFQ list

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Inventory:5,000

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Product details

Overview

HT15G from Taiwan Semiconductor is a 1 A, 400 V repetitive peak reverse voltage (V_RRM) high-efficiency glass-passivated silicon rectifier diode in TS-1 package, with forward voltage of 1.3 V at 1 A and junction capacitance of 15 pF at 1 MHz / 4.0 V reverse bias, used in DC-DC converter freewheeling paths.

For engineers reviewing the HT15G datasheet, HT15G pinout, HT15G application, or HT15G equivalent, key selection criteria include verified V_RRM = 400 V, I_F = 1 A continuous rating, low trr = 50 ns, VF = 1.3 V @ 1 A, and TS-1 package compatibility with high-reliability industrial power supplies.

Technical Context

The HT15G is a single-die, standard recovery silicon rectifier optimized for switching-mode power supply freewheeling and output rectification. Its 50 ns reverse recovery time (trr) and 15 pF junction capacitance at 1 MHz / 4.0 V support efficient operation in 100–500 kHz converters.

Thermal performance is defined by R_θJA = 95 °C/W and maximum junction temperature of 150 °C, enabling 1 A continuous conduction in ambient temperatures up to 75 °C with minimal heatsinking in TS-1 footprint layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - supports 280 V RMS input rectification with 1.4× safety margin in offline SMPS
I_F	1 A - continuous forward current rating at T_A = 75 °C without derating
V_F	1.3 V @ 1 A, 25 °C - enables <1.3 W conduction loss per diode in 1 A output rails
t_rr	50 ns - reduces switching losses and EMI in 100–300 kHz flyback and forward converters
C_J	15 pF @ 1 MHz, 4.0 V - minimizes capacitive coupling noise in high-frequency secondary-side rectification
I_FSM	30 A @ 8.3 ms - withstands inrush surges during cold-start of 12 V/1 A isolated DC-DC modules

Pinout & Package

TS-1 package: molded epoxy case meeting UL 94V-0, pure tin-plated leads, cathode indicated by band, weight ≈ 0.200 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to switch node or transformer secondary center-tap in freewheeling configuration
Cathode	Forward current exit / reverse blocking terminal	Connected to output rail; polarity band identifies this terminal for PCB layout verification

Key Features

Feature	Design Value
Glass passivated junction	Enables stable leakage performance (I_R ≤ 5 µA @ 25 °C) and long-term reliability under humidity stress
AEC-Q101 qualified option available	Supports automotive-grade power supply designs requiring qualification traceability (HT15GH variant)
Low forward voltage (1.3 V)	Reduces conduction loss by ~15% vs. comparable 1 A/400 V rectifiers with VF ≥ 1.5 V
High surge capability (30 A)	Survives repeated cold-start events in 12 V industrial power adapters without degradation

Applications

DC-DC Converter Output Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Secondary-side rectification in 12 V/1 A isolated flyback converter powering industrial sensors. IC Role / Device Role / Timing Role: Power rectifier conducting during transformer demagnetization phase. Use Value: 1.3 V VF and 50 ns trr minimize conduction + switching losses, achieving >89% efficiency at full load.	Use Scenario: Freewheeling path across MOSFET in 24 V H-bridge motor driver for HVAC actuators. IC Role / Device Role / Timing Role: Clamp inductive kickback during PWM off-time to protect switching FETs. Use Value: 400 V V_RRM and 30 A I_FSM ensure robust protection against 60 V transients in 24 V systems.
AC-DC Adapter Input Bridge Leg	Industrial PLC Power Supply Input Stage
Use Scenario: Single leg in 230 V AC input full-wave bridge for compact 5 V/1 A wall adapter. IC Role / Device Role / Timing Role: Half-wave rectifier conducting during positive half-cycle of AC input. Use Value: 95 °C/W R_θJA allows operation at 75 °C ambient without heatsink in sealed enclosures.	Use Scenario: Input rectification in DIN-rail mounted 24 V/1 A PLC power module with wide temperature range. IC Role / Device Role / Timing Role: Primary-side rectifier handling 1 A continuous current with surge tolerance. Use Value: -55 °C to +150 °C operating range and TS-1 mechanical robustness meet EN 61000-6-2 industrial immunity requirements.

DC-DC Converter Output Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Secondary-side rectification in 12 V/1 A isolated flyback converter powering industrial sensors.

IC Role / Device Role / Timing Role: Power rectifier conducting during transformer demagnetization phase.

Use Value: 1.3 V VF and 50 ns trr minimize conduction + switching losses, achieving >89% efficiency at full load.

Use Scenario: Freewheeling path across MOSFET in 24 V H-bridge motor driver for HVAC actuators.

IC Role / Device Role / Timing Role: Clamp inductive kickback during PWM off-time to protect switching FETs.

Use Value: 400 V V_RRM and 30 A I_FSM ensure robust protection against 60 V transients in 24 V systems.

AC-DC Adapter Input Bridge Leg

Industrial PLC Power Supply Input Stage

Use Scenario: Single leg in 230 V AC input full-wave bridge for compact 5 V/1 A wall adapter.

IC Role / Device Role / Timing Role: Half-wave rectifier conducting during positive half-cycle of AC input.

Use Value: 95 °C/W R_θJA allows operation at 75 °C ambient without heatsink in sealed enclosures.

Use Scenario: Input rectification in DIN-rail mounted 24 V/1 A PLC power module with wide temperature range.

IC Role / Device Role / Timing Role: Primary-side rectifier handling 1 A continuous current with surge tolerance.

Use Value: -55 °C to +150 °C operating range and TS-1 mechanical robustness meet EN 61000-6-2 industrial immunity requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-efficiency rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R04	V_RRM = 400 V, V_F = 1.35 V @ 1 A, t_rr = 45 ns, DO-41 package	Higher thermal resistance (R_θJA ≈ 120 °C/W), lower surge rating (I_FSM = 25 A)	Preferred where space-constrained through-hole layout permits and slightly faster recovery is prioritized over surge margin
SB140	V_RRM = 40 V, V_F = 0.5 V @ 1 A, Schottky, DO-41	Not suitable for 400 V applications; limited to ≤ 28 V DC systems	Only viable in low-voltage (<30 V) DC-DC outputs where ultra-low VF outweighs voltage limitation

Compared with STTH1R04 and SB140, the HT15G delivers superior surge robustness (30 A vs. 25 A) and thermal performance (95 °C/W vs. 120 °C/W) in 400 V industrial rectification, while SB140 is functionally incompatible above 40 V due to its Schottky construction.

Availability

HT15G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and industrial PLC power supply input stages requiring stable component supply and long-term manufacturability.

Supply support for HT15G 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 HT11G–HT18G series was designed specifically for high-reliability, cost-optimized rectification in mid-power switching power supplies, emphasizing thermal stability, surge resilience, and AEC-Q101 qualification readiness.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for HT15G?

The HT15G has a V_RRM of 400 V, confirmed in the Absolute Maximum Ratings table on page 1 of the H2104 datasheet. This rating defines the highest reverse voltage the device can block repeatedly without breakdown and is validated under standard test conditions (T_A = 25 °C). The HT15G must not be operated beyond this limit in any design using HT15G.

What is the forward voltage (V_F) of HT15G at rated current?

The HT15G exhibits a typical forward voltage of 1.3 V at 1 A and 25 °C, as specified in the Electrical Specifications table under "Forward voltage(1)" for HT15G. This value is measured with a 0.3 ms pulse width and is critical for calculating conduction losses in HT15G-based power stages.

Does HT15G have AEC-Q101 qualification?

The base HT15G part is not AEC-Q101 qualified; however, the HT15GH variant (ordering code HT15GH or HT15GHA0G) is explicitly qualified per AEC-Q101. This distinction is documented in the Ordering Information section, where "H" suffix denotes qualification. HT15G itself meets industrial reliability standards but lacks automotive qualification documentation.

What is the junction-to-ambient thermal resistance (R_θJA) of HT15G?

The HT15G has a typical R_θJA of 95 °C/W, measured in free-air conditions per JEDEC JESD51-2. This value applies to the standard TS-1 package with no added heatsinking and is used to calculate junction temperature rise (ΔT_J = P_LOSS × 95) when designing thermal margins for HT15G installations.

What is the reverse recovery time (t_rr) of HT15G and under what conditions is it measured?

The HT15G has a maximum reverse recovery time of 50 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, as stated in the Electrical Specifications table. This parameter is critical for minimizing switching losses in high-frequency converters and is verified using the test circuit shown in Figure 6 of the datasheet.

HT15G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: T-18, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 1 A

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

Capacitance @ Vr, F:: 15pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TS-1

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

HT15G FAQ

1.How can I place an order for HT15G through Aetrix?

Please submit a Request for Quotation (RFQ) for HT15G 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 HT15G reliable?

The price and inventory of HT15G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HT15G is usually 5 days.

3.What payment methods are accepted for HT15G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HT15G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HT15G?

HT15G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HT15G 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 HT15G?

For technical support, including HT15G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HT15G requirements.

6.How does Aetrix verify that HT15G is sourced from the original manufacturer or authorized distributors?

All HT15G 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 HT15G meets industry standards.

7.What is the process for return or replacement of HT15G?

All HT15G units undergo pre-shipment inspection (PSI). If there is an issue with HT15G, 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 HT15G part is unused and in its original packaging.

Return procedure for HT15G:

1.Submit a request within 90 days.

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

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