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Taiwan Semiconductor Corporation HS3A
- Part No.:
- HS3A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
HS3A.pdf
- Description:
- DIODE GEN PURP 50V 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,168
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Product details
Overview
HS3A from Taiwan Semiconductor is a 3A, 50V surface-mount high-efficiency rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, low forward voltage drop (1.0 V at 3 A), and 150 A peak surge current capability; used in high-frequency switching-mode power supplies for computers and telecom equipment.
For engineers reviewing the HS3A datasheet, HS3A pinout, HS3A application, or HS3A equivalent, key selection criteria include repetitive peak reverse voltage (50 V), thermal resistance (60 °C/W), junction capacitance (80 pF), reverse recovery time (50 ns), and moisture sensitivity level (J-STD-020 Level 1).
Technical Context
The HS3A is a single-die, unidirectional silicon rectifier optimized for high-frequency operation with fast reverse recovery (50 ns) and low conduction loss. Its glass-passivated junction ensures reliability under thermal cycling and humidity exposure.
Designed for automated SMT assembly, the DO-214AB (SMC) package supports reflow soldering per J-STD-002, with matte tin-plated leads and UL 94V-0 molding compound; polarity is marked by cathode band.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - maximum repetitive reverse voltage before breakdown; defines safe operating range in DC-blocking or freewheeling paths |
| IF | 3 A - continuous forward current rating at 25°C ambient; determines steady-state power handling in rectification stages |
| IFSM | 150 A - non-repetitive surge current (8.3 ms half-sine); enables robustness against inrush or fault transients |
| VF @ 3 A | 1.0 V - forward voltage drop at rated current; directly impacts conduction loss and thermal design in SMPS |
| trr | 50 ns - reverse recovery time at IF = 0.5 A, IR = 1.0 A; critical for minimizing switching losses above 100 kHz |
| RθJA | 60 °C/W - junction-to-ambient thermal resistance; sets minimum PCB copper area and airflow requirements |
| CJ | 80 pF @ 1 MHz, VR = 4 V - junction capacitance; affects high-frequency noise coupling and EMI filter design |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, low-profile, cathode-indicated by band; weight ≈ 0.210 g; RoHS and halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of AC source or switch node in flyback/freewheeling configuration |
| Cathode | Forward current exit point | Marked by band; ties to output rail or energy storage node; defines polarity-sensitive placement on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability under humid environments and thermal stress without requiring conformal coating |
| Low forward voltage (1.0 V) | Reduces conduction loss by ~15% vs. comparable 1.15 V diodes at 3 A, lowering heatsink demand in compact adapters |
| Fast recovery (50 ns) | Enables efficient operation up to 500 kHz in resonant LLC or synchronous rectifier auxiliary paths |
| J-STD-020 Level 1 MSL | Allows unlimited floor life and standard reflow without baking, simplifying SMT line logistics |
Applications
| Server Power Supply Rectification | Telecom DC-DC Converter Output Stage |
|---|---|
Use Scenario: High-density 1U server PSU converting 12 V input to 3.3/5 V rails using synchronous rectification with freewheeling path. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during high-side FET off-time in buck-derived topologies. Use Value: 50 ns trr minimizes reverse recovery charge loss; 1.0 V VF reduces conduction loss by 0.3 W vs. legacy 1.3 V diodes at 3 A. | Use Scenario: 48 V to 12 V isolated DC-DC module in 5G baseband unit with strict efficiency and thermal constraints. IC Role / Device Role / Timing Role: Secondary-side rectifier in forward or active-clamp forward converter, handling 3 A continuous output current. Use Value: DO-214AB footprint enables high-current routing with minimal board area; 60 °C/W RθJA supports natural convection cooling. |
| Industrial PLC Power Input Protection | Automotive Infotainment DC-DC Front-End |
Use Scenario: Reverse-polarity and surge protection at 24 V DC input of programmable logic controller with transient immunity requirements. IC Role / Device Role / Timing Role: Input rectifier and clamp in bridge or single-diode configuration, absorbing back-EMF from solenoid loads. Use Value: 150 A IFSM withstands 100 ms load dump surges; glass passivation prevents corrosion in dusty, humid factory environments. | Use Scenario: 12 V to 5 V step-down converter in head unit supplying USB-C PD and display logic, subject to automotive temperature cycling. IC Role / Device Role / Timing Role: Freewheeling diode in buck regulator feeding SoC core voltage, operating across -40°C to +125°C junction range. Use Value: -55°C to +150°C TJ rating ensures functionality during engine-bay thermal soak; JESD201 Class 2 whisker resistance prevents field failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-3EYH05-M3/45 | Same DO-214AB package, 3 A / 50 V, VF = 0.95 V typ., trr = 35 ns, RθJA = 55 °C/W | Lower VF and faster trr improve light-load efficiency but require tighter layout control due to higher dV/dt sensitivity | Select when optimizing for <200 kHz operation with minimal conduction loss; verify snubber needs for fast-edge circuits |
| ON Semiconductor MUR350E | DO-201AD package (larger), 3 A / 50 V, VF = 1.15 V, trr = 75 ns, RθJA = 75 °C/W | Through-hole mounting and higher thermal resistance limit use in ultra-thin or high-power-density designs | Prefer for prototyping or legacy through-hole boards where reflow compatibility is not required |
Compared with VS-3EYH05-M3/45 and MUR350E, the HS3A offers balanced trade-offs: moderate VF and trr suitable for 100–300 kHz SMPS, industry-standard DO-214AB footprint, and J-STD-020 Level 1 handling-making it optimal for volume SMT production with controlled thermal budgets.
Availability
HS3A is available at Aetrix Electronics and suitable for server power supplies, telecom DC-DC converters, and industrial PLC power inputs requiring stable component supply, consistent parametric performance, and full traceability across production lots.
Supply support for HS3A 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 devices, and MOSFETs for industrial and computing markets.
The HS3A belongs to TSC's HS3x high-efficiency rectifier family, designed specifically for high-frequency switching-mode power conversion in space-constrained, thermally demanding applications such as data center PSUs and 5G infrastructure.
FAQ
What is the maximum junction temperature rating for the HS3A?
The HS3A has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings table in the official TSC datasheet K2102. This allows reliable operation in high-temperature environments such as enclosed server power supplies or automotive infotainment modules. Derating curves confirm usable current capacity down to 1.5 A at 100°C ambient. The HS3A must be mounted on adequate copper area to maintain this limit under full 3 A load.
Does the HS3A support lead-free reflow soldering processes?
Yes, the HS3A supports lead-free reflow soldering per J-STD-002, with matte tin-plated leads and a DO-214AB package rated for peak temperatures up to 260°C. Its moisture sensitivity level is J-STD-020 Level 1, meaning no baking is required prior to assembly. The HS3A is RoHS compliant and halogen-free per IEC 61249-2-21, making it suitable for modern eco-compliant manufacturing lines.
What is the reverse recovery time (trr) specification for the HS3A?
The HS3A has a maximum reverse recovery time (trr) of 50 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the electrical specifications table in TSC document K2102. This value is confirmed for the HS3A variant only; higher-voltage members of the HS3x family (e.g., HS3M) specify 75 ns. The HS3A's 50 ns trr enables efficient operation in 200–500 kHz switching converters without excessive switching loss.
Is the HS3A pin-compatible with other DO-214AB rectifiers like the MUR350E?
No, the HS3A is not pin-compatible with the MUR350E because the MUR350E uses the larger DO-201AD package, which has different pad dimensions and lead spacing. While both are axial-lead-equivalent in function, their footprints are mechanically incompatible. The HS3A shares the DO-214AB (SMC) footprint with devices such as the STTH3L05 and Vishay VS-3EYH05-M3/45, enabling direct PCB replacement only within that package group.
What does the marking code "HS3A" indicate on the device body?
The marking code "HS3A" laser-etched on the HS3A device body identifies the exact voltage grade (50 V VRRM) within the HS3x family, as defined in TSC's ordering information: "x" maps to voltage-HS3A = 50 V, HS3B = 100 V, up to HS3M = 1000 V. It also confirms the DO-214AB package and green molding compound (per marking diagram in K2102). No additional date or factory codes are embedded in the "HS3A" marking itself.
HS3A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 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:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS3A FAQ
1.How can I place an order for HS3A through Aetrix?
Please submit a Request for Quotation (RFQ) for HS3A 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 HS3A reliable?
The price and inventory of HS3A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS3A is usually 5 days.
3.What payment methods are accepted for HS3A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS3A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS3A?
HS3A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS3A 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 HS3A?
For technical support, including HS3A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS3A requirements.
6.How does Aetrix verify that HS3A is sourced from the original manufacturer or authorized distributors?
All HS3A 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 HS3A meets industry standards.
7.What is the process for return or replacement of HS3A?
All HS3A units undergo pre-shipment inspection (PSI). If there is an issue with HS3A, 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 HS3A part is unused and in its original packaging.
Return procedure for HS3A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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