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Taiwan Semiconductor Corporation HS3AB
- Part No.:
- HS3AB
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
HS3AB.pdf
- Description:
- DIODE GEN PURP 50V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,929
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Product details
Overview
HS3AB from Taiwan Semiconductor is a 3A, 50V repetitive peak reverse voltage surface-mount Schottky rectifier in DO-214AA (SMB) package, featuring 1.0V max forward voltage at 3A and 50ns reverse recovery time, designed for high-efficiency switching mode power supplies and AC/DC adapters.
For engineers reviewing the HS3AB datasheet, HS3AB pinout, HS3AB application, or HS3AB equivalent, key selection criteria include its 50V VRRM, 100A IFSM, 60°C/W RθJA, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1 compliance.
Technical Context
This single-die, glass-passivated silicon rectifier operates with junction temperatures from –55°C to +150°C and supports automated SMT placement. Its low-profile DO-214AA (SMB) package meets UL 94V-0 flammability and features matte tin-plated leads solderable per J-STD-002.
The device delivers 3A average forward current with 1.0V typical forward voltage at 3A and 25°C, 10μA max reverse leakage at rated 50V and 25°C, and 80pF junction capacitance at 1MHz/4V - enabling fast switching and reduced conduction losses in compact power converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - maximum non-repetitive reverse blocking capability without breakdown |
| IF | 3 A - continuous average forward current rating at case temperature ≤75°C |
| IFSM | 100 A - surge withstand for 8.3ms half-sine wave, supporting inrush current handling |
| VF @ 3A, 25°C | ≤1.0 V - low conduction loss enabling >90% efficiency in 5–12V output SMPS stages |
| trr | ≤50 ns - fast recovery minimizes switching losses in 100–500kHz DC/DC topologies |
| RθJA | 60 °C/W - thermal resistance enables 1.5W dissipation with 90°C ambient rise on standard 1-in² copper |
| Junction Temp Range | –55°C to +150°C - suitable for industrial and enclosed adapter environments |
Pinout & Package
DO-214AA (SMB) surface-mount package: molded epoxy body, cathode band marking polarity, matte tin-plated leads, 0.093g mass, UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to unregulated input rail (e.g., rectified AC or HV DC bus) |
| Cathode | Output current exit point | Feeds downstream filter capacitor and regulation stage; marked by visible band |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | ≤1.0 V @ 3A ensures <0.3W conduction loss at full load in 12V-output adapters |
| Glass passivated junction | Enhances long-term reliability under humidity and thermal cycling stress per JESD22-A101 |
| Moisture sensitivity level 1 | No bake required before reflow - compatible with standard SMT assembly lines |
| Fast switching performance | 50ns trr reduces turn-off energy loss in high-frequency flyback and LLC converters |
| Halogen-free construction | Complies with IEC 61249-2-21 - meets RoHS and green procurement mandates |
Applications
| AC/DC Adapter Power Stage | Monitor Internal SMPS |
|---|---|
Use Scenario: Secondary-side rectification in 12–24V, 36W wall adapters with 100–250kHz flyback topology. IC Role / Device Role / Timing Role: Unidirectional current switch converting transformer secondary AC to regulated DC output. Use Value: 1.0V VF reduces heat generation vs. higher-VF alternatives, enabling smaller heatsink or no heatsink in compact enclosures. | Use Scenario: Output rectification in slim-profile LCD monitor power supplies with tight thermal constraints. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode in synchronous rectified forward converter. Use Value: 50ns trr prevents cross-conduction loss during MOSFET gate drive transitions, improving light-load efficiency by ≥2.5%. |
| TV Standby Power Supply | Industrial Control PSU |
Use Scenario: Auxiliary winding rectification in TV main board standby circuit delivering 5V/0.5A. IC Role / Device Role / Timing Role: Low-leakage output rectifier maintaining <10μA reverse current at 50V to minimize no-load power draw. Use Value: 10μA max IR at 25°C ensures standby consumption stays below 150mW per IEC 62301 Ed.2 Class 1 limits. | Use Scenario: Input bridge rectifier replacement in DIN-rail mounted 24V industrial control power modules. IC Role / Device Role / Timing Role: Surface-mount alternative to through-hole GBU series, enabling automated assembly and higher power density. Use Value: DO-214AA footprint allows direct PCB layout reuse while supporting same 3A/100A ratings as legacy parts. |
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-3EJH05-M3/45 | 50V VRRM, 3A IF, 1.1V VF max @ 3A, 65ns trr, DO-214AA | Higher VF increases conduction loss by ~0.3W at full load; slightly slower recovery | Acceptable where thermal margin exists and cost sensitivity outweighs 5% efficiency penalty |
| ON Semiconductor MUR350G | 50V VRRM, 3A IF, 1.25V VF max @ 3A, 75ns trr, DO-201AD | Larger DO-201AD package requires PCB redesign; higher VF and trr reduce efficiency | Only suitable if legacy through-hole assembly remains in production or DO-214AA footprint unavailable |
Compared with VS-3EJH05-M3/45 and MUR350G, HS3AB offers the lowest forward voltage and fastest recovery in DO-214AA, making it optimal for space-constrained, thermally sensitive 36W+ adapter designs requiring >91% efficiency at full load.
Availability
HS3AB is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and flat-panel display power systems requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for HS3AB 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 since 1979.
The HS3AB belongs to TSC's HS3x series of high-efficiency surface-mount rectifiers, engineered specifically for compact, high-frequency AC/DC conversion in consumer and industrial power supplies.
FAQ
What is the maximum repetitive peak reverse voltage rating for HS3AB?
The HS3AB has a maximum repetitive peak reverse voltage (VRRM) rating of 50 V, verified per TSC datasheet Version L2102. This defines the highest reverse-biased voltage the device can block continuously without avalanche breakdown. Exceeding 50 V risks irreversible junction failure. The HS3AB is not interchangeable with higher-voltage variants like HS3BB (100V) or HS3DB (200V) without circuit revalidation.
Does HS3AB support lead-free reflow soldering processes?
Yes, HS3AB supports lead-free reflow soldering per J-STD-002. Its matte tin-plated leads are qualified for peak temperatures up to 260°C, and its moisture sensitivity level is rated Class 1 per J-STD-020 - meaning no pre-bake is required prior to reflow. The DO-214AA package also complies with UL 94V-0 flammability requirements for safety-critical power applications.
What is the typical forward voltage drop of HS3AB at rated current?
The HS3AB exhibits a maximum forward voltage (VF) of 1.0 V at 3 A and 25°C junction temperature, with typical values lower under real operating conditions. This low VF directly reduces conduction losses - for example, yielding only 3.0 W of power dissipation at full 3 A load - making HS3AB especially effective in thermally constrained adapter and monitor power supplies.
Can HS3AB be used as a direct replacement for older DO-214AA rectifiers like 1N5822?
HS3AB is not a direct replacement for 1N5822 due to differences in surge rating and thermal resistance: HS3AB specifies 100 A IFSM and 60°C/W RθJA, whereas 1N5822 typically offers 80 A IFSM and ~75°C/W RθJA. While both share DO-214AA footprint and 3A rating, HS3AB's superior surge and thermal performance may require layout verification for mechanical stress and thermal relief in legacy designs.
What is the reverse leakage current specification for HS3AB at elevated temperature?
At 100°C junction temperature, HS3AB exhibits a maximum reverse leakage current (IR) of 250 μA when biased at its rated 50 V reverse voltage. This value is critical for standby power design - for instance, in TV auxiliary supplies - where sub-200 μA leakage helps meet strict IEC 62301 Ed.2 no-load consumption targets. At 25°C, leakage is limited to 10 μA max.
HS3AB 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):
- 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-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS3AB FAQ
1.How can I place an order for HS3AB through Aetrix?
Please submit a Request for Quotation (RFQ) for HS3AB 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 HS3AB reliable?
The price and inventory of HS3AB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS3AB is usually 5 days.
3.What payment methods are accepted for HS3AB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS3AB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS3AB?
HS3AB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS3AB 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 HS3AB?
For technical support, including HS3AB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS3AB requirements.
6.How does Aetrix verify that HS3AB is sourced from the original manufacturer or authorized distributors?
All HS3AB 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 HS3AB meets industry standards.
7.What is the process for return or replacement of HS3AB?
All HS3AB units undergo pre-shipment inspection (PSI). If there is an issue with HS3AB, 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 HS3AB part is unused and in its original packaging.
Return procedure for HS3AB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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