My Inquiry
My Account
Taiwan Semiconductor Corporation HS2KFS
- Part No.:
- HS2KFS
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
HS2KFS.pdf
- Description:
- DIODE GEN PURP 800V 2A SOD128
- Quantity:
- Payment:
- Shipping:
Inventory:6,800
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HS2KFS from Taiwan Semiconductor is a 2 A, 800 V high-efficiency surface-mount fast recovery rectifier in SOD-128 package, featuring 1.48 V max forward voltage at 2 A / 25°C, 75 ns reverse recovery time, and 12 pF junction capacitance - deployed in DC-DC converters and switching inverters requiring low-loss unidirectional conduction.
For engineers reviewing the HS2KFS datasheet, HS2KFS pinout, HS2KFS application, or HS2KFS equivalent, key selection criteria include peak reverse voltage rating (800 V), thermal resistance (RθJL = 17 °C/W), forward voltage behavior across temperature, surge current capability (120 A @ 1 ms), and SOD-128 mechanical compatibility with high-density PCB layouts.
Technical Context
The HS2KFS implements a single-die, glass-passivated PN junction optimized for fast recovery (trr ≤ 75 ns) and low conduction loss in high-frequency switching topologies. Its 800 V VRRM rating supports 400 V AC input-derived bus rails with margin, while RθJL = 17 °C/W enables direct thermal coupling to copper pads without heatsinks up to ~1.5 W dissipation.
Designed for surface-mount assembly, the device uses matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band; moisture sensitivity level is J-STD-020 Level 1 - suitable for standard reflow without dry-pack requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports 400 VRMS input stages with 100% safety margin against transients in industrial SMPS |
| IF | 2 A continuous - rated for steady-state output rectification in 20–50 W isolated DC-DC modules |
| trr | ≤75 ns - minimizes switching losses in 100–500 kHz flyback and forward converters |
| VF @ 2 A, 25°C | 1.48 V max - determines conduction loss of ~2.96 W at full load, critical for thermal design |
| CJ | 12 pF - reduces capacitive turn-on loss and EMI generation in hard-switched topologies |
| RθJL | 17 °C/W - allows junction-to-lead temperature rise of ≤34°C at 2 W dissipation on 5 mm × 5 mm Cu pad |
| IFSM (1 ms) | 120 A - withstands inrush and short-circuit surge events without bond-wire failure |
Pinout & Package
SOD-128 is a low-profile, surface-mount plastic package with gull-wing leads, 1.6 mm height, and 5.0 mm × 3.7 mm footprint. Cathode polarity is indicated by a visible band on the case body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry node during forward conduction | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode | Current exit node during forward conduction | Connected to output rail or filter capacitor positive terminal; marked by band |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable leakage performance (IR ≤ 1 µA @ 25°C) and long-term reliability under humidity stress |
| Fast recovery (trr ≤ 75 ns) | Reduces reverse recovery charge (Qrr) to < 25 nC, lowering EMI and diode-induced switching loss |
| J-STD-020 Level 1 MSL | Eliminates bake requirements before reflow - compatible with standard SMT lines without dry storage |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally constrained end equipment |
| Low-profile SOD-128 | Enables < 1.6 mm board height in space-constrained power modules and LED drivers |
Applications
| DC-DC Converter Rectification | Switching Inverter Freewheeling |
|---|---|
Use Scenario: Output rectification in 24 V input, 5–12 V output isolated flyback converters delivering up to 25 W. IC Role / Device Role / Timing Role: Unidirectional current valve converting high-frequency AC from transformer secondary to regulated DC output. Use Value: 1.48 V VF limits conduction loss to ≤3 W; 75 ns trr suppresses voltage spikes during MOSFET turn-on. | Use Scenario: Freewheeling path in half-bridge motor drive inverters operating at 20 kHz with 400 V DC bus. IC Role / Device Role / Timing Role: Provides low-loss return path for inductive current when high-side switch turns off. Use Value: 800 V VRRM withstands bus transients; 12 pF CJ minimizes capacitive coupling noise into gate drive circuits. |
| AC-DC Adapter Secondary Side | Industrial Power Supply Snubber |
Use Scenario: Secondary-side rectification in universal-input (90–264 VAC) adapters powering IoT gateways and PoE injectors. IC Role / Device Role / Timing Role: High-voltage output rectifier handling 400 V peak reverse stress during no-load conditions. Use Value: 150°C TJMAX and 120 A IFSM ensure robustness during line surges and startup inrush. | Use Scenario: Clamp diode in RCD snubber networks across MOSFETs in 1 kW telecom rectifiers. IC Role / Device Role / Timing Role: Fast-recovery clamp element absorbing turn-off energy and limiting voltage overshoot. Use Value: 75 ns trr ensures rapid voltage clamping; 17 °C/W RθJL enables direct thermal transfer to snubber resistor copper area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-2EYH08-M3 | Same 800 V VRRM, 2 A IF, but 50 ns trr and 1.25 V VF @ 2 A - lower conduction loss, faster recovery | Better suited for >300 kHz designs where Qrr dominates loss; slightly higher cost | Select when optimizing for efficiency over cost in high-frequency SMPS |
| ON Semiconductor MUR280SFP | 800 V VRRM, 2 A IF, but TO-220FP package - higher RθJA (50 °C/W), larger footprint | Requires heatsinking above ~1.2 W; incompatible with ultra-thin or high-density layouts | Select only when legacy through-hole compatibility or higher surge margin (150 A IFSM) is required |
Compared with VS-2EYH08-M3 and MUR280SFP, the HS2KFS offers optimal balance of SOD-128 compactness, 75 ns recovery, and 800 V rating - making it preferred for space-constrained, medium-frequency industrial DC-DC modules where thermal path to PCB is well-controlled.
Availability
HS2KFS is available at Aetrix Electronics and suitable for DC-DC converter rectification, switching inverter freewheeling, and AC-DC adapter secondary-side applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for HS2KFS 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and consumer markets.
The HS2KFS belongs to TSC's HS2xFS fast recovery rectifier family, engineered specifically for high-efficiency, high-voltage switching power supplies where low profile, fast recovery, and thermal reliability are prioritized over ultra-low VF.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HS2KFS?
The HS2KFS has a maximum repetitive peak reverse voltage (VRRM) of 800 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2103). This rating defines the highest transient reverse voltage the device can block repeatedly without breakdown, and is validated across temperature and lifetime testing. The HS2KFS is therefore suitable for 400 VRMS AC input-derived bus applications with appropriate derating.
Does HS2KFS have a specified reverse recovery time (trr)?
Yes, the HS2KFS has a specified reverse recovery time (trr) of ≤75 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the Electrical Specifications section of the Taiwan Semiconductor datasheet. This value is measured at 25°C and applies to all members of the HS2JFS–HS2MFS group, including HS2KFS. It reflects the device's suitability for high-frequency switching topologies.
What package type is used for HS2KFS?
The HS2KFS uses the SOD-128 surface-mount package, as explicitly stated in the Mechanical Data and Ordering Information sections of the Taiwan Semiconductor datasheet. This low-profile package features gull-wing leads, measures 5.0 mm × 3.7 mm, and has a maximum height of 1.6 mm. Polarity is indicated by a cathode band on the case body, and the device is rated J-STD-020 Level 1 for moisture sensitivity.
What is the forward voltage (VF) of HS2KFS at 2 A and 25°C?
The forward voltage (VF) of HS2KFS is 1.48 V maximum at 2 A forward current and 25°C junction temperature, per the Electrical Specifications table in the Taiwan Semiconductor datasheet. The typical value is 1.30 V under the same conditions. This parameter directly impacts conduction loss and thermal design - for example, at 2 A, worst-case power dissipation is 2.96 W.
Is HS2KFS RoHS and halogen-free compliant?
Yes, HS2KFS is both RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as confirmed in the FEATURES section of the Taiwan Semiconductor datasheet. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated to meet J-STD-002 solderability requirements. These compliance attributes are verified for the full HS2DFS–HS2MFS series, including HS2KFS.
HS2KFS 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):
- 800 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 12pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS2KFS FAQ
1.How can I place an order for HS2KFS through Aetrix?
Please submit a Request for Quotation (RFQ) for HS2KFS 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 HS2KFS reliable?
The price and inventory of HS2KFS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS2KFS is usually 5 days.
3.What payment methods are accepted for HS2KFS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS2KFS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS2KFS?
HS2KFS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS2KFS 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 HS2KFS?
For technical support, including HS2KFS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS2KFS requirements.
6.How does Aetrix verify that HS2KFS is sourced from the original manufacturer or authorized distributors?
All HS2KFS 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 HS2KFS meets industry standards.
7.What is the process for return or replacement of HS2KFS?
All HS2KFS units undergo pre-shipment inspection (PSI). If there is an issue with HS2KFS, 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 HS2KFS part is unused and in its original packaging.
Return procedure for HS2KFS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HS2KFS Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
