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

Taiwan Semiconductor Corporation HS1K

Name: HS1K
Brand: Taiwan Semiconductor Corporation
SKU: HS1K
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HS1K

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: HS1K.pdf

Description:: DIODE GEN PURP 800V 1A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:14,115

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Product details

Overview

HS1K from Taiwan Semiconductor is a high-efficiency surface-mount silicon rectifier diode rated for 800 V repetitive peak reverse voltage (V_RRM), 1 A average forward current (I_F), and 30 A non-repetitive surge current (I_FSM). It features a fast reverse recovery time of 75 ns, low junction capacitance of 15 pF at 1 MHz/4 V, and operates up to +150 °C junction temperature - deployed in snubber networks and freewheeling paths of switching-mode power supplies.

For engineers reviewing the HS1K datasheet, HS1K pinout, HS1K application, or HS1K equivalent, key selection criteria include its DO-214AC (SMA) package compatibility with automated placement, verified thermal resistance (R_θJL = 15 °C/W), and confirmed performance under 100 °C reverse leakage (50 µA) and 125 °C stress (150 µA).

Technical Context

The HS1K is a single-die, glass-passivated, planar-junction silicon rectifier optimized for high-frequency switching applications. Its 75 ns reverse recovery time and 15 pF junction capacitance support efficient operation in DC–DC converters and inverters operating above 50 kHz.

Thermal design is enabled by R_θJL = 15 °C/W and R_θJA = 70 °C/W on a 5 mm × 5 mm Cu pad PCB - enabling reliable 1 A continuous conduction without forced cooling in ambient temperatures up to +70 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - supports input rectification in 400 V AC line-derived SMPS with ≥2× safety margin
I_F	1 A continuous - sustains steady-state output current in low-power adapters and LED drivers
I_FSM	30 A (8.3 ms half-sine) - withstands inrush surges during cold-start of capacitive-input rectifiers
t_rr	75 ns - minimizes switching losses and EMI in 100–500 kHz flyback and forward converters
C_J	15 pF @ 1 MHz, 4 V - reduces capacitive coupling noise in high-dv/dt gate-drive or snubber circuits
T_J(max)	+150 °C - enables operation in sealed industrial enclosures with limited airflow
R_θJL	15 °C/W - allows direct thermal transfer to PCB copper, simplifying heatsinking in space-constrained layouts

Pinout & Package

Package: DO-214AC (SMA), surface-mount plastic case with cathode band polarity marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry terminal	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return)
Cathode	Forward current exit / reverse-blocking terminal	Marked by visible band; ties to output rail or snubber capacitor positive node

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable leakage performance across humidity exposure and long-term bias stress
Moisture sensitivity level 1	Eliminates bake requirement prior to reflow, supporting standard SMT assembly lines
UL 94V-0 molding compound	Meets flame-retardancy requirements for enclosed power supplies and lighting fixtures
RoHS and halogen-free compliance	Supports environmental certification for EU, China, and Japan market access

Applications

DC–DC Converter	Snubber Network
Use Scenario: Secondary-side synchronous rectification in isolated 12 V/3 A flyback converter for industrial IoT gateways. IC Role / Device Role / Timing Role: Freewheeling diode clamping transformer leakage inductance energy during MOSFET off-time. Use Value: 75 ns t_rr and 15 pF C_J reduce voltage overshoot and ringing, lowering EMI filter component count.	Use Scenario: RC snubber across primary-side MOSFET in 24 V input buck-boost LED driver. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive kickback during switching transitions. Use Value: 800 V V_RRM provides margin against 600 V transient spikes; 30 A I_FSM handles repetitive surge events.
Lighting Application	Freewheeling Application
Use Scenario: Input bridge rectifier in 220 V AC–driven smart LED tube with integrated PFC stage. IC Role / Device Role / Timing Role: High-voltage input rectifier converting AC line to bulk DC bus before boost converter. Use Value: 150 °C T_J(max) and 1 A I_F sustain continuous conduction under 85 °C ambient cabinet conditions.	Use Scenario: Inductor freewheeling path in 48 V telecom DC–DC module powering baseband processors. IC Role / Device Role / Timing Role: Unidirectional current path maintaining inductor current continuity during high-side switch off-cycle. Use Value: Low 1.7 V V_F at 1 A minimizes conduction loss and improves efficiency at full load.

DC–DC Converter

Snubber Network

Use Scenario: Secondary-side synchronous rectification in isolated 12 V/3 A flyback converter for industrial IoT gateways.

IC Role / Device Role / Timing Role: Freewheeling diode clamping transformer leakage inductance energy during MOSFET off-time.

Use Value: 75 ns t_rr and 15 pF C_J reduce voltage overshoot and ringing, lowering EMI filter component count.

Use Scenario: RC snubber across primary-side MOSFET in 24 V input buck-boost LED driver.

IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive kickback during switching transitions.

Use Value: 800 V V_RRM provides margin against 600 V transient spikes; 30 A I_FSM handles repetitive surge events.

Lighting Application

Freewheeling Application

Use Scenario: Input bridge rectifier in 220 V AC–driven smart LED tube with integrated PFC stage.

IC Role / Device Role / Timing Role: High-voltage input rectifier converting AC line to bulk DC bus before boost converter.

Use Value: 150 °C T_J(max) and 1 A I_F sustain continuous conduction under 85 °C ambient cabinet conditions.

Use Scenario: Inductor freewheeling path in 48 V telecom DC–DC module powering baseband processors.

IC Role / Device Role / Timing Role: Unidirectional current path maintaining inductor current continuity during high-side switch off-cycle.

Use Value: Low 1.7 V V_F at 1 A minimizes conduction loss and improves efficiency at full load.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R08	Same DO-214AC package; 800 V V_RRM, 1 A I_F, but t_rr = 60 ns (typ), V_F = 1.6 V (typ) at 1 A	Slightly faster recovery but higher forward drop; less suitable for thermally constrained low-V_F designs	Select STTH1R08 only if system-level EMI budget requires <65 ns t_rr and thermal headroom permits 0.1 V higher V_F
ON Semi MUR108	DO-214AC package; 800 V V_RRM, 1 A I_F, t_rr = 75 ns (max), V_F = 1.7 V (max) - matches HS1K's max specs but lacks typ values	No typ V_F or C_J data published; less predictable performance in high-frequency snubbers	Prefer HS1K when junction capacitance stability (15 pF typ) and consistent 75 ns t_rr are required for repeatable layout behavior

Compared with STTH1R08 and MUR108, the HS1K delivers tighter parametric control (15 pF C_J, 75 ns t_rr typ), verified moisture level 1 handling, and documented thermal resistance - making it preferable for volume production where process consistency and assembly yield matter.

Availability

HS1K is available at Aetrix Electronics and suitable for DC–DC converters, snubber networks, lighting applications, and freewheeling circuits requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for HS1K 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 global power and signal conditioning markets since 1979.

The HS1K belongs to TSC's HS1x high-efficiency rectifier family, engineered specifically for high-frequency switching power conversion where low recovery time, stable leakage, and robust thermal performance are critical.

FAQ

What is the maximum junction temperature rating for the HS1K?

The HS1K has a maximum junction temperature (T_J(max)) of +150 °C, validated per absolute maximum ratings in the official TSC datasheet Version M2401. This rating enables reliable operation in enclosed industrial power supplies and LED drivers where ambient temperatures reach +70 °C and PCB copper area is limited. Derating curves confirm 1 A continuous current is sustainable up to +100 °C ambient when mounted on a 5 mm × 5 mm Cu pad.

Does the HS1K have a specified forward voltage at 1 A and 25 °C?

Yes, the HS1K has a maximum forward voltage (V_F) of 1.7 V at I_F = 1 A and T_J = 25 °C, as stated in the Electrical Specifications table of the TSC datasheet. This value is guaranteed across all production lots and forms the basis for conduction loss calculation in power stage design - for example, yielding 1.7 W dissipation at full load in a freewheeling path.

Is the HS1K compatible with lead-free reflow soldering processes?

Yes, the HS1K uses matte tin-plated leads qualified per J-STD-002 for solderability and meets JEDEC JESD201 Class 2 whisker resistance requirements. Its moisture sensitivity level is rated Level 1 (per J-STD-020), meaning it can be stored indefinitely at ≤30 °C/60% RH and placed directly into standard lead-free reflow profiles (peak 260 °C) without baking.

What is the reverse recovery time specification for the HS1K?

The HS1K has a typical reverse recovery time (t_rr) of 75 ns under test conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, as confirmed in the Electrical Specifications section of the TSC datasheet. This parameter is measured using the circuit diagram shown in Figure 10 and is critical for minimizing switching losses and voltage overshoot in high-frequency DC–DC topologies.

How does the HS1K's junction capacitance compare to lower-voltage variants in the same family?

The HS1K exhibits a typical junction capacitance (C_J) of 15 pF at 1 MHz and 4 V reverse bias - identical to HS1J and HS1M, and lower than HS1A–HS1G (20 pF). This reduction reflects optimized die geometry for higher-voltage blocking, directly improving high-frequency noise suppression in snubber and gate-drive clamp circuits where C_J couples dv/dt transients.

HS1K Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 800 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 1 A

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

Reverse Recovery Time (trr):: 75 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 800 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

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

HS1K FAQ

1.How can I place an order for HS1K through Aetrix?

Please submit a Request for Quotation (RFQ) for HS1K 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 HS1K reliable?

The price and inventory of HS1K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1K is usually 5 days.

3.What payment methods are accepted for HS1K?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1K transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HS1K?

HS1K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HS1K 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 HS1K?

For technical support, including HS1K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1K requirements.

6.How does Aetrix verify that HS1K is sourced from the original manufacturer or authorized distributors?

All HS1K 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 HS1K meets industry standards.

7.What is the process for return or replacement of HS1K?

All HS1K units undergo pre-shipment inspection (PSI). If there is an issue with HS1K, 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 HS1K part is unused and in its original packaging.

Return procedure for HS1K:

1.Submit a request within 90 days.

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

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