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

Taiwan Semiconductor Corporation HS2DFS

Name: HS2DFS
Brand: Taiwan Semiconductor Corporation
SKU: HS2DFS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HS2DFS

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-128

Datasheet:: HS2DFS.pdf

Description:: DIODE GEN PURP 200V 2A SOD128

Quantity:: RFQ Add To RFQ list

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Inventory:6,994

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Product details

Overview

HS2DFS from Taiwan Semiconductor is a 2 A, 200 V glass-passivated surface-mount fast recovery rectifier in SOD-128 package, featuring 0.87 V forward voltage at 2 A/25°C, 50 ns reverse recovery time, and 32 pF junction capacitance. It serves as a high-efficiency freewheeling or output rectifier in DC-DC converters and switching inverters.

For engineers reviewing the HS2DFS datasheet, HS2DFS pinout, HS2DFS application, or HS2DFS equivalent, key selection criteria include its 200 V V_RRM, 60 A I_FSM surge rating, 17 °C/W R_θJL, low-profile SOD-128 footprint, and verified performance at 125°C junction temperature.

Technical Context

The HS2DFS employs a single-die silicon PN junction with glass passivation for robustness and stable leakage behavior. Its fast recovery (t_rr ≤ 50 ns) and low forward voltage support high-frequency switching topologies up to several hundred kHz.

Thermally optimized for PCB mounting on 5 mm × 5 mm copper pads, it delivers 150°C maximum junction temperature operation with R_θJA = 53 °C/W and R_θJC = 21 °C/W - enabling compact power stage designs without forced air cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines safe operating range in flyback or buck-boost secondary-side rectification.
I_F	2 A continuous - Rated average forward current; supports sustained conduction in 12–48 V output DC-DC stages.
t_rr	≤ 50 ns - Fast reverse recovery enables efficient operation in 200–500 kHz SMPS without excessive switching loss or ringing.
V_F @ 2 A, 25°C	0.87 V max - Low conduction loss reduces thermal load and improves efficiency over Schottky alternatives at same current.
C_J	32 pF @ 4 V - Junction capacitance impacts high-frequency EMI and snubber design; value confirmed at 1 MHz bias.
R_θJL	17 °C/W - Low junction-to-lead thermal resistance allows direct heat transfer to PCB copper, simplifying thermal management.
I_FSM	60 A @ 8.3 ms - Surge rating supports inrush and transient overload conditions in industrial power supplies.

Pinout & Package

SOD-128 low-profile surface-mount package with cathode-indicating band; 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 point	Connected to lower-potential node (e.g., transformer secondary center-tap or switch node in synchronous rectification).
Cathode	Forward current exit / reverse-blocking terminal	Connected to output rail; polarity marked by visible band; must be routed with adequate creepage for 200 V isolation.

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable IR < 1 µA at 25°C and < 80 µA at 125°C under rated V_R, improving reliability in humid environments.
Low-profile SOD-128	Height ≤ 1.1 mm - fits under low-clearance heatsinks and enables double-sided PCB assembly in space-constrained modules.
Moisture sensitivity level 1	No bake requirement before reflow - compatible with standard J-STD-020 assembly processes without floor-life restrictions.
Halogen-free & RoHS-compliant	Meets IEC 61249-2-21 and EU Directive 2011/65/EU - suitable for consumer, industrial, and automotive-qualified end equipment.

Applications

DC-DC Converter Output Rectification	Switching Inverter Freewheeling
Use Scenario: Secondary-side rectification in isolated 12 V/24 V/48 V DC-DC converters operating at 200–300 kHz. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 0.87 V V_F at 2 A reduces conduction loss by ~15% vs. comparable 200 V ultrafast diodes, directly improving full-load efficiency.	Use Scenario: Freewheeling path across inductive loads (e.g., motor windings or PFC chokes) in half-bridge inverters. IC Role / Device Role / Timing Role: Provides low-loss return path during switch off-time, clamping inductive kickback. Use Value: 50 ns t_rr minimizes reverse recovery charge (Q_rr), reducing voltage overshoot and EMI generation during commutation.
AC-DC Adapter Secondary Rectifier	Industrial Power Supply Snubber Diode
Use Scenario: Output rectification in compact 15–30 W offline adapters with universal input (85–265 V_AC). IC Role / Device Role / Timing Role: Converts transformer secondary AC into smoothed DC; operates continuously under 2 A load. Use Value: 150°C T_JMAX and 60 A I_FSM ensure robustness against line surges and startup transients without derating.	Use Scenario: Clamp diode in RCD snubber networks across MOSFETs in 100–500 W industrial SMPS. IC Role / Device Role / Timing Role: Absorbs energy from leakage inductance spikes during MOSFET turn-off. Use Value: 32 pF C_J and low V_F allow precise snubber timing and minimal power dissipation compared to higher-capacitance alternatives.

DC-DC Converter Output Rectification

Switching Inverter Freewheeling

Use Scenario: Secondary-side rectification in isolated 12 V/24 V/48 V DC-DC converters operating at 200–300 kHz.

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

Use Value: 0.87 V V_F at 2 A reduces conduction loss by ~15% vs. comparable 200 V ultrafast diodes, directly improving full-load efficiency.

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

IC Role / Device Role / Timing Role: Provides low-loss return path during switch off-time, clamping inductive kickback.

Use Value: 50 ns t_rr minimizes reverse recovery charge (Q_rr), reducing voltage overshoot and EMI generation during commutation.

AC-DC Adapter Secondary Rectifier

Industrial Power Supply Snubber Diode

Use Scenario: Output rectification in compact 15–30 W offline adapters with universal input (85–265 V_AC).

IC Role / Device Role / Timing Role: Converts transformer secondary AC into smoothed DC; operates continuously under 2 A load.

Use Value: 150°C T_JMAX and 60 A I_FSM ensure robustness against line surges and startup transients without derating.

Use Scenario: Clamp diode in RCD snubber networks across MOSFETs in 100–500 W industrial SMPS.

IC Role / Device Role / Timing Role: Absorbs energy from leakage inductance spikes during MOSFET turn-off.

Use Value: 32 pF C_J and low V_F allow precise snubber timing and minimal power dissipation compared to higher-capacitance alternatives.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R02	V_RRM = 200 V, I_F = 2 A, t_rr = 35 ns, V_F = 0.95 V @ 2 A - faster but higher forward drop.	Better suited for >300 kHz operation where Q_rr dominates loss; less optimal in thermally constrained 25°C ambient layouts.	Select STTH2R02 when minimizing reverse recovery charge is critical and board-level thermal margin allows higher V_F-related loss.
MBR220LSFT1G	Schottky, V_R = 20 V only - not voltage-compatible; unsuitable for 200 V blocking.	Only applicable in low-voltage (<30 V) DC-DC outputs; cannot replace HS2DFS in 200 V-rated circuits.	Reject MBR220LSFT1G for any application requiring ≥150 V reverse blocking; use only in sub-30 V systems where ultra-low V_F justifies voltage limitation.

Compared with STTH2R02 and MBR220LSFT1G, the HS2DFS provides optimal balance of 200 V blocking, 50 ns recovery, and 0.87 V conduction loss in cost-sensitive industrial and adapter designs - neither ultrafast nor Schottky, but purpose-fit for mainstream 200 V SMPS rectification.

Availability

HS2DFS is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching inverter freewheeling, and industrial power supply snubber networks requiring stable component supply and long-term manufacturability.

Supply support for HS2DFS 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, industrial, and consumer markets since 1979.

The HS2DFS belongs to TSC's HS2xFS fast recovery rectifier family, engineered specifically for high-efficiency, surface-mount secondary-side rectification and freewheeling in 200–1000 V switching power supplies.

FAQ

What is the maximum junction temperature rating for HS2DFS?

The HS2DFS has a maximum junction temperature (T_JMAX) of +150°C, validated per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version C2103. This rating permits continuous operation in high-ambient industrial environments when mounted on a 5 mm × 5 mm copper pad, supported by its 17 °C/W R_θJL. Derating begins above 125°C ambient, and the device remains functional up to its 150°C limit without permanent degradation.

Does HS2DFS have a specified reverse recovery time, and how is it measured?

Yes, the HS2DFS specifies a 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 electrical specifications table in the Taiwan Semiconductor datasheet. This value is confirmed at 25°C and applies to the HS2DFS variant exclusively - higher-voltage variants (e.g., HS2GFS) exhibit longer t_rr due to process trade-offs.

What is the forward voltage of HS2DFS at 2 A and 125°C?

The forward voltage (V_F) of HS2DFS is 0.74 V typical and 0.82 V maximum at I_F = 2 A and T_J = 125°C, as published in the Electrical Specifications section of the official datasheet. This reduced V_F versus room-temperature operation reflects the negative temperature coefficient of silicon PN junctions and confirms stable conduction performance across the full industrial temperature range.

Is HS2DFS compatible with lead-free reflow soldering processes?

Yes, HS2DFS features matte tin-plated leads qualified to J-STD-002 for solderability and is rated for moisture sensitivity level 1 per J-STD-020 - meaning it may be stored indefinitely at ≤30°C/60% RH and requires no baking prior to standard lead-free reflow (peak 260°C). The SOD-128 package also meets UL 94V-0 flammability requirements.

What does the marking code "HS2DFS" indicate on the device body?

The marking code "HS2DFS" laser-etched on the cathode band of the device uniquely identifies the 200 V variant within the HS2xFS rectifier family. Per the Ordering Information section, the "x" in HS2xFS maps directly to voltage grade: D = 200 V, G = 400 V, J = 600 V, K = 800 V, M = 1000 V - so HS2DFS is unambiguously the 200 V part, distinguishable from other family members by both marking and electrical test data.

HS2DFS 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):: 200 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 2 A

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 200 V

Capacitance @ Vr, F:: 32pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-128

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

HS2DFS FAQ

1.How can I place an order for HS2DFS through Aetrix?

Please submit a Request for Quotation (RFQ) for HS2DFS 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 HS2DFS reliable?

The price and inventory of HS2DFS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS2DFS is usually 5 days.

3.What payment methods are accepted for HS2DFS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS2DFS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HS2DFS?

HS2DFS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HS2DFS 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 HS2DFS?

For technical support, including HS2DFS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS2DFS requirements.

6.How does Aetrix verify that HS2DFS is sourced from the original manufacturer or authorized distributors?

All HS2DFS 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 HS2DFS meets industry standards.

7.What is the process for return or replacement of HS2DFS?

All HS2DFS units undergo pre-shipment inspection (PSI). If there is an issue with HS2DFS, 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 HS2DFS part is unused and in its original packaging.

Return procedure for HS2DFS:

1.Submit a request within 90 days.

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

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