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

Taiwan Semiconductor Corporation HS1MFS

Name: HS1MFS
Brand: Taiwan Semiconductor Corporation
SKU: HS1MFS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HS1MFS

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-128

Datasheet:: HS1MFS.pdf

Description:: DIODE GEN PURP 1KV 1A SOD128

Quantity:: RFQ Add To RFQ list

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Product details

Overview

HS1MFS from Taiwan Semiconductor is a 1A, 1000V repetitive peak reverse voltage (V_RRM) surface-mount fast recovery rectifier in SOD-128 package, featuring 1.49V typical forward voltage at 1.0A/25°C, 75ns reverse recovery time, and 8pF junction capacitance. It serves as a high-efficiency freewheeling or output rectifier in DC-DC converters operating up to 150°C junction temperature.

For engineers reviewing the HS1MFS datasheet, HS1MFS pinout, HS1MFS application, or HS1MFS equivalent, key selection criteria include its 1000V V_RRM, thermal resistance of 29°C/W (junction-to-lead), RoHS-compliant halogen-free construction, and SOD-128 low-profile footprint for space-constrained power stages.

Technical Context

The HS1MFS implements a single-die, glass-passivated silicon PN junction optimized for fast switching in high-voltage SMPS topologies. Its 75ns reverse recovery time and low 8pF junction capacitance reduce switching losses during turn-off transitions in flyback and forward converters.

Thermal performance is defined by R_θJL = 29°C/W and R_θJA = 51°C/W on a 5mm × 5mm Cu pad PCB, enabling reliable 1A continuous conduction at T_J ≤ 150°C. Polarity is marked by a cathode band, and terminals are matte tin-plated per J-STD-002.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - supports input or output stages in 800V-class AC-DC front-ends or high-bus DC-DC designs
I_F	1 A continuous - rated for sustained conduction in low-power isolated converters up to ~15W
V_F @ 1A, 25°C	1.49 V typical - determines conduction loss and thermal rise in high-duty-cycle operation
t_rr	75 ns - enables efficient operation at switching frequencies up to ~500 kHz with minimal tail current loss
C_J	8 pF @ 1 MHz, 4 V - reduces capacitive coupling and EMI in high-dv/dt node placements
R_θJL	29 °C/W - allows direct thermal path to PCB copper, simplifying heatsinking in compact layouts
T_J max	150 °C - supports operation in sealed enclosures or high-ambient industrial environments

Pinout & Package

Package: SOD-128 - low-profile, surface-mount plastic package with gull-wing leads; 0.028g weight; UL 94V-0 molding compound; moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point during forward conduction	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node)
Cathode	Current exit point during forward conduction; marked by band	Connected to output filter capacitor or load return; defines polarity-sensitive placement

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability under humidity and thermal cycling stress in industrial-grade power supplies
Fast recovery (75 ns)	Reduces reverse recovery charge (Q_rr) and associated switching losses in high-frequency converters
RoHS & halogen-free	Meets IEC 61249-2-21 compliance for environmentally regulated end equipment
Low-profile SOD-128	Enables <1.1 mm board height in ultra-thin power modules and portable adapters

Applications

DC-DC Converter Output Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Secondary-side rectification in isolated 12–48V output flyback or forward converters delivering ≤15W. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary to regulated DC output. Use Value: 1000V V_RRM provides margin against reflected voltage spikes; 1.49V V_F limits conduction loss at full load.	Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or relay coils) in half-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss recirculation path during switch off-time to clamp inductive kickback. Use Value: 75ns t_rr minimizes voltage overshoot and EMI; 150°C T_J rating ensures stability under transient overloads.
AC-DC Adapter Input Bridge Leg	High-Voltage Auxiliary Supply Rectification
Use Scenario: One leg of a discrete bridge rectifier in universal-input (85–265V AC) offline adapters targeting 1000V surge immunity. IC Role / Device Role / Timing Role: Handles peak reverse voltage exceeding 700V during line surges while maintaining low leakage. Use Value: 1µA max reverse current at 25°C and 35µA at 125°C ensures minimal standby power loss in energy-efficient designs.	Use Scenario: Rectifying auxiliary winding output in high-bus (>400V DC) PFC+LLC systems powering control ICs and gate drivers. IC Role / Device Role / Timing Role: Converts high-impedance, low-current AC from auxiliary winding into stable bias rail. Use Value: 8pF C_J reduces capacitive loading on auxiliary winding, preserving regulation accuracy and startup timing.

DC-DC Converter Output Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Secondary-side rectification in isolated 12–48V output flyback or forward converters delivering ≤15W.

IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary to regulated DC output.

Use Value: 1000V V_RRM provides margin against reflected voltage spikes; 1.49V V_F limits conduction loss at full load.

Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or relay coils) in half-bridge inverters.

IC Role / Device Role / Timing Role: Provides low-loss recirculation path during switch off-time to clamp inductive kickback.

Use Value: 75ns t_rr minimizes voltage overshoot and EMI; 150°C T_J rating ensures stability under transient overloads.

AC-DC Adapter Input Bridge Leg

High-Voltage Auxiliary Supply Rectification

Use Scenario: One leg of a discrete bridge rectifier in universal-input (85–265V AC) offline adapters targeting 1000V surge immunity.

IC Role / Device Role / Timing Role: Handles peak reverse voltage exceeding 700V during line surges while maintaining low leakage.

Use Value: 1µA max reverse current at 25°C and 35µA at 125°C ensures minimal standby power loss in energy-efficient designs.

Use Scenario: Rectifying auxiliary winding output in high-bus (>400V DC) PFC+LLC systems powering control ICs and gate drivers.

IC Role / Device Role / Timing Role: Converts high-impedance, low-current AC from auxiliary winding into stable bias rail.

Use Value: 8pF C_J reduces capacitive loading on auxiliary winding, preserving regulation accuracy and startup timing.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-1EWH10	Same 1000V V_RRM, 1A I_F, but 1.7V max V_F @ 1A/25°C vs. HS1MFS 1.49V typical; 50ns t_rr vs. 75ns	Better suited for ultra-low-loss, high-frequency designs where V_F dominates loss budget	Select VS-1EWH10 when minimizing conduction loss at elevated temperatures is critical; verify layout compatibility with SOD-128 footprint
ON Semiconductor MUR110	1000V V_RRM, 1A I_F, but TO-220AC package (not SMD); 1.25V max V_F @ 1A/25°C; 75ns t_rr	Requires through-hole assembly and heatsinking; unsuitable for automated SMT lines	Choose MUR110 only for prototyping or legacy through-hole systems; HS1MFS offers superior manufacturability and thermal integration in SMT designs

Compared with VS-1EWH10 and MUR110, the HS1MFS delivers best-in-class forward voltage among SOD-128 1000V rectifiers while maintaining industry-standard 75ns recovery-enabling higher efficiency in compact, high-density power supplies without sacrificing assembly flexibility.

Availability

HS1MFS is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and high-voltage auxiliary supply rectification requiring stable component supply and consistent parametric performance across production lots.

Supply support for HS1MFS 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, including rectifiers, TVS diodes, and MOSFETs, with global distribution and AEC-Q200 qualified products.

The HS1MFS belongs to TSC's HS1xFS high-voltage fast recovery rectifier family, engineered for efficiency-critical, space-constrained AC-DC and DC-DC power conversion in industrial, computing, and consumer applications.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) rating for HS1MFS?

The HS1MFS has a maximum repetitive peak reverse voltage (V_RRM) rating of 1000 V, confirmed in the Absolute Maximum Ratings table. This rating applies under standard test conditions (T_A = 25°C) and defines the highest reverse voltage the device can block repeatedly without breakdown. The HS1MFS is the highest-voltage variant in the HS1DFS–HS1MFS series, where "M" explicitly denotes 1000V capability per the ordering code specification.

What is the typical forward voltage (V_F) of HS1MFS at 1.0A and 25°C?

The typical forward voltage (V_F) of HS1MFS is 1.49 V at 1.0A and 25°C, as specified in the Electrical Specifications table under "HS1KFS HS1MFS" row. This value is measured using pulse testing (PW = 0.3ms) and represents the conduction loss baseline for thermal and efficiency calculations. The maximum V_F is 1.70 V under the same conditions, ensuring design margin for worst-case conduction loss.

Does HS1MFS have a specified reverse recovery time (t_rr)?

Yes, HS1MFS has a specified reverse recovery time (t_rr) of 75 ns, measured at I_F = 0.5A, I_R = 1.0A, and I_rr = 0.25A. This value is explicitly listed in the Electrical Specifications table for HS1JFS, HS1KFS, and HS1MFS variants. The 75 ns t_rr confirms its classification as a fast recovery rectifier, suitable for switching frequencies up to several hundred kHz.

What package type does HS1MFS use, and what are its key mechanical attributes?

HS1MFS uses the SOD-128 surface-mount package, as confirmed in the Mechanical Data and Ordering Information sections. Key attributes include a low-profile gull-wing leadform, UL 94V-0 flammability-rated molding compound, moisture sensitivity level 1 (per J-STD-020), matte tin-plated leads compliant with J-STD-002, and a nominal weight of 0.028g. Polarity is indicated by a cathode band.

Is HS1MFS RoHS compliant and halogen-free?

Yes, HS1MFS is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as stated in the FEATURES section. This compliance is verified for the entire HS1DFS–HS1MFS family and applies to all production lots. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and bromine/chlorine content is below threshold limits.

HS1MFS Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: SOD-128

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 1000 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:: 1 µA @ 1000 V

Capacitance @ Vr, F:: 8pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-128

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

HS1MFS FAQ

1.How can I place an order for HS1MFS through Aetrix?

Please submit a Request for Quotation (RFQ) for HS1MFS 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 HS1MFS reliable?

The price and inventory of HS1MFS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1MFS is usually 5 days.

3.What payment methods are accepted for HS1MFS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1MFS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HS1MFS?

HS1MFS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HS1MFS 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 HS1MFS?

For technical support, including HS1MFS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1MFS requirements.

6.How does Aetrix verify that HS1MFS is sourced from the original manufacturer or authorized distributors?

All HS1MFS 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 HS1MFS meets industry standards.

7.What is the process for return or replacement of HS1MFS?

All HS1MFS units undergo pre-shipment inspection (PSI). If there is an issue with HS1MFS, 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 HS1MFS part is unused and in its original packaging.

Return procedure for HS1MFS:

1.Submit a request within 90 days.

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

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