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

Taiwan Semiconductor Corporation HS1F

Name: HS1F
Brand: Taiwan Semiconductor Corporation
SKU: HS1F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HS1F

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: HS1F.pdf

Description:: DIODE GEN PURP 300V 1A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:14,990

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Product details

Overview

HS1F from Taiwan Semiconductor is a 300 V repetitive peak reverse voltage, 1 A average forward current, surface-mount fast recovery rectifier in DO-214AC (SMA) package, with 50 ns reverse recovery time and 1.0 V forward voltage at 1 A, used in DC-DC converters and snubber circuits.

For engineers reviewing the HS1F datasheet, HS1F pinout, HS1F application, or HS1F equivalent, key selection criteria include its 300 V V_RRM, 50 ns trr, 1.0 V V_F at 1 A, thermal resistance of 15 °C/W (junction-to-lead), and DO-214AC mechanical compatibility with automated placement.

Technical Context

The HS1F is a single-die, glass-passivated silicon junction rectifier optimized for high-efficiency switching applications. Its fast recovery (trr ≤ 50 ns) and low forward voltage (V_F = 1.0 V @ 1 A, 25°C) reduce conduction and switching losses in high-frequency power conversion stages.

Designed for surface-mount assembly on PCBs with 5 mm × 5 mm copper pads, it delivers R_θJL = 15 °C/W and operates across –55°C to +150°C junction temperature range, meeting J-STD-020 moisture sensitivity level 1 and JESD 201 class 2 whisker resistance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	300 V - maximum non-repetitive reverse blocking voltage, defining safe operating range in flyback or snubber networks
I_F	1 A - continuous average forward current rating at 75°C case temperature, suitable for medium-power SMPS outputs
trr	≤ 50 ns - fast reverse recovery enables operation up to ~1 MHz switching frequencies with minimal tail current loss
V_F	1.0 V @ 1 A, 25°C - low conduction drop improves efficiency in low-voltage output rectification
R_θJL	15 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation without external heatsinking
C_J	20 pF @ 1 MHz, 4 V - low junction capacitance minimizes capacitive coupling noise in high-dv/dt environments

Pinout & Package

Package: DO-214AC (SMA), molded plastic body per JEDEC DO-214 AC variation, matte tin-plated leads, cathode indicated by band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node)
Cathode	Forward current exit / reverse blocking terminal	Marked with band; ties to output rail or filter capacitor positive; blocks 300 V reverse voltage

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in industrial environments
Fast recovery (trr ≤ 50 ns)	Reduces switching loss and EMI generation in 100–500 kHz SMPS topologies such as active clamp forward or LLC resonant converters
Moisture sensitivity level 1	Enables direct use in reflow assembly without baking, lowering manufacturing cost and cycle time
RoHS & halogen-free compliance	Meets IPC-1752A material declaration requirements for export to EU, Japan, and China RoHS jurisdictions

Applications

DC-DC Converter Output Rectification	Snubber Network Clamping
Use Scenario: Secondary-side rectification in isolated 12 V/1 A buck-derived DC-DC modules for telecom power supplies. IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated output while blocking reverse voltage during switch off-time. Use Value: 1.0 V V_F and 50 ns trr minimize conduction and recovery losses, sustaining >92% efficiency at full load.	Use Scenario: RC snubber across MOSFET drain-source in 48 V input flyback converters operating at 250 kHz. IC Role / Device Role / Timing Role: Fast clamping diode that absorbs inductive energy spikes during MOSFET turn-off. Use Value: 300 V V_RRM withstands reflected voltage peaks; 50 ns trr ensures rapid reset before next switching cycle.
Switching Inverter Freewheeling	LED Driver Flyback Rectification
Use Scenario: Freewheeling path in half-bridge motor drive inverters powering 24 V BLDC fans. IC Role / Device Role / Timing Role: Provides low-loss return path for inductive current when upper switch is off. Use Value: 30 A I_FSM handles surge currents during startup; DO-214AC footprint allows dense layout near gate drivers.	Use Scenario: Output rectifier in constant-current LED drivers for street lighting (36 V, 0.7 A). IC Role / Device Role / Timing Role: Converts high-frequency transformer output to stable DC for LED string bias. Use Value: 1.0 V V_F reduces thermal stress on heat-sensitive LED boards; R_θJL = 15 °C/W enables direct PCB copper pad cooling.

DC-DC Converter Output Rectification

Snubber Network Clamping

Use Scenario: Secondary-side rectification in isolated 12 V/1 A buck-derived DC-DC modules for telecom power supplies.

IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated output while blocking reverse voltage during switch off-time.

Use Value: 1.0 V V_F and 50 ns trr minimize conduction and recovery losses, sustaining >92% efficiency at full load.

Use Scenario: RC snubber across MOSFET drain-source in 48 V input flyback converters operating at 250 kHz.

IC Role / Device Role / Timing Role: Fast clamping diode that absorbs inductive energy spikes during MOSFET turn-off.

Use Value: 300 V V_RRM withstands reflected voltage peaks; 50 ns trr ensures rapid reset before next switching cycle.

Switching Inverter Freewheeling

LED Driver Flyback Rectification

Use Scenario: Freewheeling path in half-bridge motor drive inverters powering 24 V BLDC fans.

IC Role / Device Role / Timing Role: Provides low-loss return path for inductive current when upper switch is off.

Use Value: 30 A I_FSM handles surge currents during startup; DO-214AC footprint allows dense layout near gate drivers.

Use Scenario: Output rectifier in constant-current LED drivers for street lighting (36 V, 0.7 A).

IC Role / Device Role / Timing Role: Converts high-frequency transformer output to stable DC for LED string bias.

Use Value: 1.0 V V_F reduces thermal stress on heat-sensitive LED boards; R_θJL = 15 °C/W enables direct PCB copper pad cooling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R03U	Same DO-214AC package; 300 V V_RRM, 1.05 V V_F @ 1 A, 35 ns trr, higher I_FSM = 40 A	Slightly faster recovery suits higher-frequency (>300 kHz) designs; marginally higher V_F increases conduction loss	Prefer STTH1R03U where trr < 40 ns is critical and layout allows minor efficiency trade-off
MBR130LSFT1G	DO-214AC package; 30 V V_RRM, 0.45 V V_F @ 1 A, Schottky architecture, no reverse recovery	Not suitable for 300 V blocking; only viable in low-voltage (<40 V) outputs where ultra-low V_F dominates	Select MBR130LSFT1G only if system V_RRM requirement is ≤30 V and zero trr is mandatory

Compared with STTH1R03U and MBR130LSFT1G, the HS1F offers optimal balance of 300 V blocking, 1.0 V conduction loss, and 50 ns recovery for cost-sensitive 100–250 kHz industrial DC-DC converters-neither over-specified nor under-rated for its target voltage class.

Availability

HS1F is available at Aetrix Electronics and suitable for DC-DC converter output rectification, snubber network clamping, and switching inverter freewheeling requiring stable component supply and consistent DO-214AC packaging.

Supply support for HS1F 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with ISO 9001 and IATF 16949 certification.

The HS1F belongs to TSC's HS1x fast recovery rectifier family, engineered for high-efficiency, surface-mount power conversion in industrial and consumer switching power supplies where reliability, automated assembly, and thermal performance are critical.

FAQ

What is the maximum repetitive peak reverse voltage rating for HS1F?

The HS1F has a maximum repetitive peak reverse voltage (V_RRM) rating of 300 V, verified per TSC datasheet revision M2401. This defines the highest reverse voltage the device can block repeatedly without breakdown under normal operating conditions. Exceeding 300 V risks avalanche failure. The HS1F is part of an 8-part family spanning 50 V to 1000 V, with HS1F specifically designated for the 300 V grade.

What is the forward voltage drop of HS1F at rated current?

The HS1F exhibits a typical forward voltage (V_F) of 1.0 V at 1 A forward current and 25°C junction temperature, as specified in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating effects. At higher temperatures or continuous DC, V_F decreases slightly due to negative temperature coefficient of silicon PN junctions.

Is HS1F suitable for automated SMT assembly?

Yes, HS1F is explicitly designed for automated placement, as confirmed in its FEATURES section. It meets moisture sensitivity level 1 per J-STD-020, requires no pre-baking, and features matte tin-plated leads compliant with J-STD-002 solderability standards. Its DO-214AC (SMA) package geometry and 0.060 g weight ensure stable feeding and accurate placement on high-speed pick-and-place machines.

What is the reverse recovery time of HS1F and how is it tested?

The HS1F has a maximum reverse recovery time (t_rr) of 50 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, per the datasheet's ELECTRICAL SPECIFICATIONS table. This test uses a standardized double-pulse setup defined in Figure 10, ensuring repeatable characterization of minority-carrier lifetime and switching speed for fast recovery rectifiers.

Does HS1F have RoHS and halogen-free compliance?

Yes, HS1F is RoHS compliant and halogen-free, as stated in both the FEATURES and ORDERING INFORMATION sections of the TSC datasheet. It satisfies EU Directive 2011/65/EU and related regional restrictions on lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. The molding compound is green compound (G), and all materials meet IPC-1752A reporting requirements for substance declarations.

HS1F 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):: 300 V

Current - Average Rectified (Io):: 1A

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

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 300 V

Capacitance @ Vr, F:: 20pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

HS1F FAQ

1.How can I place an order for HS1F through Aetrix?

Please submit a Request for Quotation (RFQ) for HS1F 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 HS1F reliable?

The price and inventory of HS1F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1F is usually 5 days.

3.What payment methods are accepted for HS1F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HS1F?

HS1F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HS1F 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 HS1F?

For technical support, including HS1F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1F requirements.

6.How does Aetrix verify that HS1F is sourced from the original manufacturer or authorized distributors?

All HS1F 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 HS1F meets industry standards.

7.What is the process for return or replacement of HS1F?

All HS1F units undergo pre-shipment inspection (PSI). If there is an issue with HS1F, 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 HS1F part is unused and in its original packaging.

Return procedure for HS1F:

1.Submit a request within 90 days.

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

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