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Taiwan Semiconductor Corporation HS3DB-K
- Part No.:
- HS3DB-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
HS3DB-K.pdf
- Description:
- 50NS, 3A, 200V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:7,886
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Product details
Overview
HS3DB-K from Taiwan Semiconductor is a 3A, 200V high-efficiency surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring 0.90V max forward voltage at 3.0A/25°C, 80A surge current capability, and 5µA max reverse leakage at 25°C. It serves as a primary output rectifier in DC-DC converters and switching-mode power supplies.
For engineers reviewing the HS3DB-K datasheet, HS3DB-K pinout, HS3DB-K application, or HS3DB-K equivalent, key selection criteria include its 200V repetitive peak reverse voltage, low thermal resistance (RθJL = 20°C/W), glass-passivated junction for reliability, and RoHS/halogen-free compliance for industrial and consumer power designs.
Technical Context
This device is a single-die, unidirectional silicon PN junction rectifier optimized for high-frequency switching applications. Its 50ns reverse recovery time and 56pF junction capacitance at 1MHz/4V support efficient operation in SMPS topologies up to several hundred kHz.
The DO-214AA (SMB) package enables automated placement and provides robust thermal performance: RθJA = 78°C/W on 10mm × 10mm Cu pad, with rated junction temperature spanning −55°C to +150°C and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in flyback or forward converter secondary side |
| IF | 3 A - Continuous average forward current; supports 36W output at 12V with typical derating above 75°C ambient |
| IFSM | 80 A - Non-repetitive surge current (8.3ms half-sine); withstands inrush and transient overloads in AC-DC front-ends |
| VF @ 3A/25°C | 0.90 V max - Low conduction loss reduces heat generation and improves efficiency in high-current paths |
| trr | 50 ns max - Fast recovery minimizes switching losses and EMI in high-frequency converters |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance enables direct PCB copper pad heat sinking without heatsink |
| IR @ 25°C | 5 µA max - Low leakage preserves efficiency in standby mode and high-impedance bias networks |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode-indicating band; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 1 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 return) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or filter capacitor positive; blocks reverse voltage up to 200V |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enhances long-term reliability under humidity and thermal cycling; eliminates need for conformal coating in non-hermetic environments |
| Moisture sensitivity level 1 | Zero floor life limitation; no baking required prior to reflow, reducing manufacturing overhead |
| UL 94V-0 molding compound | Self-extinguishing encapsulation meets safety standards for enclosed power supplies and industrial equipment |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21; supports green manufacturing and end-of-life recycling requirements |
Applications
| DC-DC Converter Output Rectification | Switching Mode Inverter Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in isolated 12V/3A buck-derived DC-DC modules for telecom and networking equipment. IC Role / Device Role / Timing Role: Unidirectional power conversion element; conducts during transformer secondary positive half-cycle and blocks reverse voltage. Use Value: 0.90V VF limits conduction loss to <1.2W at full load, enabling compact thermal design without forced air. | Use Scenario: Freewheeling path across inductive loads in motor drive inverters and UPS systems. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when main switching device turns off. Use Value: 50ns trr prevents voltage spikes >250V during turn-off, reducing snubber component count and stress on IGBTs. |
| AC-DC Adapter Primary-Side Clamp | Industrial Power Supply Input Bridge Leg |
Use Scenario: Snubber clamp diode in flyback transformer primary circuits handling 200V-rated MOSFETs. IC Role / Device Role / Timing Role: Absorbs leakage inductance energy during MOSFET turn-off; operates in unidirectional clamping mode. Use Value: 200V VRRM matches common 200V MOSFET ratings, while 80A IFSM handles worst-case energy dump pulses. | Use Scenario: Single-leg replacement in discrete bridge rectifiers for 24V/3A industrial control power supplies. IC Role / Device Role / Timing Role: Half-wave rectification element in modular, serviceable bridge configurations. Use Value: DO-214AA footprint allows drop-in replacement of legacy SMB diodes; 0.090g weight supports vibration-resistant mounting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L02 | 3A/200V, 50ns trr, but VF = 1.05V max @3A/25°C; TO-220AC package | Requires through-hole mounting and heatsinking; higher conduction loss increases thermal load | Prefer HS3DB-K for SMT space-constrained or high-volume automated assembly |
| SB320-E3/54 | 3A/200V, VF = 0.95V max @3A/25°C, 70ns trr; DO-214AA package | Slower recovery increases switching loss in >100kHz designs; higher IR at 125°C (50µA vs. 200µA for HS3DB-K) | Acceptable for <50kHz applications where cost is prioritized over efficiency |
Compared with STTH3L02 and SB320-E3/54, the HS3DB-K delivers superior thermal performance (RθJL = 20°C/W), lower forward voltage, and identical DO-214AA footprint-making it optimal for high-density, high-efficiency SMT power stages.
Availability
HS3DB-K is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for HS3DB-K 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, automotive, and industrial markets since 1979.
The HS3DB-K belongs to TSC's HS3x series of high-efficiency surface-mount rectifiers, engineered specifically for high-frequency switching power supplies where low VF, fast trr, and robust thermal behavior are critical.
FAQ
What is the maximum junction temperature rating for the HS3DB-K?
The HS3DB-K has a maximum junction temperature (TJ) of +150°C and a minimum of −55°C. This wide operating range supports deployment in industrial environments with elevated ambient temperatures. Derating curves in the datasheet show usable forward current drops to ~1.8A at 100°C ambient on standard PCB layout. Thermal design must account for RθJA = 78°C/W and RθJL = 20°C/W to ensure HS3DB-K remains within limits under full load.
Does the HS3DB-K have a specified reverse recovery time, and how is it measured?
Yes, the HS3DB-K has a maximum reverse recovery time (trr) of 50 ns, measured under conditions of IF = 0.5A, IR = 1.0A, and IRR = 0.25A using a half-sine waveform. This value is confirmed across production lots and applies specifically to the HS3DB-K variant-not extrapolated from higher-voltage family members. The fast trr directly contributes to reduced switching losses in high-frequency SMPS designs.
Is the HS3DB-K compatible with lead-free reflow soldering processes?
Yes, the HS3DB-K is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the device is rated for peak reflow temperatures up to 260°C per JEDEC J-STD-020. Moisture sensitivity level 1 means no pre-bake is required, simplifying manufacturing flow. The UL 94V-0 epoxy body also withstands multiple reflow cycles without delamination.
What does the "-K" suffix indicate in HS3DB-K?
The "-K" suffix in HS3DB-K denotes tape-and-reel packaging: 3,000 units per reel in DO-214AA (SMB) configuration. It does not indicate a performance variant or temperature grade. All electrical and thermal specifications for HS3DB-K remain identical to those published for the base part; the suffix solely reflects packaging format for automated assembly.
How does the forward voltage of HS3DB-K vary with temperature?
The HS3DB-K exhibits negative temperature coefficient for forward voltage: VF decreases as junction temperature rises. At 3.0A, VF is 0.90V max at 25°C but drops to 0.75V max at 125°C. This behavior improves thermal stability in parallel configurations and reduces conduction loss at elevated operating temperatures-unlike many Schottky diodes, this is a characteristic of its silicon PN junction construction.
HS3DB-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Capacitance @ Vr, F:
- 56pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS3DB-K FAQ
1.How can I place an order for HS3DB-K through Aetrix?
Please submit a Request for Quotation (RFQ) for HS3DB-K 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 HS3DB-K reliable?
The price and inventory of HS3DB-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS3DB-K is usually 5 days.
3.What payment methods are accepted for HS3DB-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS3DB-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS3DB-K?
HS3DB-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS3DB-K 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 HS3DB-K?
For technical support, including HS3DB-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS3DB-K requirements.
6.How does Aetrix verify that HS3DB-K is sourced from the original manufacturer or authorized distributors?
All HS3DB-K 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 HS3DB-K meets industry standards.
7.What is the process for return or replacement of HS3DB-K?
All HS3DB-K units undergo pre-shipment inspection (PSI). If there is an issue with HS3DB-K, 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 HS3DB-K part is unused and in its original packaging.
Return procedure for HS3DB-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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