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Taiwan Semiconductor Corporation HS3AH
- Part No.:
- HS3AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
HS3AH.pdf
- Description:
- 50NS, 3A, 50V, HIGH EFFICIENT RE
- Quantity:
- Payment:
- Shipping:
Inventory:6,298
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Product details
Overview
HS3AH from Taiwan Semiconductor is a 3A, 50V AEC-Q101-qualified surface-mount Schottky rectifier in DO-214AB (SMC) package, featuring 1.0V max forward voltage at 3A, 150A peak surge current, and 60°C/W junction-to-ambient thermal resistance. It serves as a high-efficiency freewheeling diode in automotive DC-DC converters and LED lighting circuits.
For engineers reviewing the HS3AH datasheet, HS3AH pinout, HS3AH application, or HS3AH equivalent, key selection criteria include its 50V repetitive peak reverse voltage, low-profile SMC package compatibility with automated placement, AEC-Q101 qualification for automotive environments, and 10µA max reverse leakage at 25°C.
Technical Context
The HS3AH is a single-die, unidirectional silicon rectifier optimized for high-efficiency switching power supplies. Its glass-passivated junction ensures reliability under thermal cycling, while the matte tin-plated leads meet J-STD-002 solderability requirements and JESD201 Class 2 whisker resistance.
Designed for operation up to +150°C junction temperature, the device exhibits 50ns typical reverse recovery time and 80pF junction capacitance at 1MHz/4V, enabling stable performance in snubber networks and high-frequency freewheeling paths where low stored charge is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in DC-DC output rectification |
| IF | 3 A - Continuous forward current rating; supports compact heatsinking in space-constrained automotive modules |
| VF (max) | 1.0 V @ 3A, 25°C - Low conduction loss directly reduces power dissipation and improves system efficiency |
| IFSM | 150 A - Peak non-repetitive surge capability; withstands inrush currents during cold-start in vehicle electronics |
| trr (typ) | 50 ns - Fast reverse recovery enables use in >100kHz switching topologies without excessive switching loss |
| RθJA | 60 °C/W - Thermal resistance value used to calculate junction temperature rise under real PCB layout conditions |
| CJ | 80 pF @ 1MHz, 4V - Junction capacitance impacts EMI filtering design and high-frequency noise coupling behavior |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, low-profile case with cathode band polarity marking; moisture sensitivity level 1 per J-STD-020; weight ≈0.210g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); requires thermal pad connection for optimal heat transfer |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; ties to output rail or ground return path; determines direction of freewheeling current flow |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST - required for under-hood and lighting control modules |
| Glass passivated junction | Enhances long-term stability against humidity and contamination in harsh environments like engine compartments |
| Low forward voltage drop | 1.0V max at rated 3A reduces conduction loss by ~25% vs. standard PN rectifiers, improving thermal margin |
| DO-214AB (SMC) package | Standardized footprint compatible with industry-wide pick-and-place equipment and reflow profiles |
| Moisture sensitivity level 1 | Enables unlimited floor life before reflow - eliminates baking requirement and streamlines SMT production |
Applications
| Automotive DC-DC Converters | LED Headlight Drivers |
|---|---|
Use Scenario: Step-down conversion from 12V battery to 5–24V for infotainment and ADAS subsystems. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck topology. Use Value: 50ns trr and 1.0V VF minimize switching losses and thermal stress during continuous 3A operation. | Use Scenario: Constant-current regulation for high-brightness automotive LED arrays. IC Role / Device Role / Timing Role: Freewheeling diode across inductive driver stage. Use Value: AEC-Q101 qualification and 150°C TJ max ensure reliability in sealed headlamp enclosures. |
| Snubber Networks | Industrial Power Supplies |
Use Scenario: RCD clamp circuit across MOSFETs in flyback or forward converters. IC Role / Device Role / Timing Role: Fast-recovery path for transient energy dissipation. Use Value: 80pF CJ and 50ns trr enable precise timing control and reduced ringing in high-voltage transients. | Use Scenario: Secondary-side rectification in industrial AC-DC adapters rated for 3A output. IC Role / Device Role / Timing Role: Main output rectifier handling continuous load current. Use Value: UL 94V-0 molding compound and halogen-free construction meet IEC 62368-1 safety and environmental compliance. |
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, 50V VRRM, but 1.1V VF max at 3A and 100ns trr | Slightly higher conduction loss and slower recovery; less suitable for >200kHz designs | Acceptable where thermal margin exists and cost is prioritized over efficiency |
| ON Semiconductor MUR350E | TO-220AC package, 50V VRRM, 1.2V VF, 75ns trr - not surface-mount | Requires through-hole assembly and larger PCB area; incompatible with automated SMT lines | Only viable for legacy through-hole designs or prototyping with manual soldering |
Compared with VS-3EYH05-M3/45 and MUR350E, the HS3AH delivers superior high-frequency performance due to its 50ns trr and 1.0V VF, while maintaining full SMT compatibility and AEC-Q101 compliance - making it the preferred choice for new automotive and space-constrained industrial designs.
Availability
HS3AH is available at Aetrix Electronics and suitable for automotive lighting systems, DC-DC converter modules, and industrial power supply designs requiring stable component supply, AEC-Q101 qualification, and consistent DO-214AB packaging.
Supply support for HS3AH 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 automotive-qualified components.
The HS3AH belongs to TSC's HS3xH high-efficiency rectifier family, engineered specifically for automotive and industrial switching power supplies where low VF, fast trr, and AEC-Q101 reliability are mandatory.
FAQ
What is the maximum junction temperature rating for the HS3AH?
The HS3AH has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet revision A2102. This rating allows reliable operation in under-hood automotive environments and enclosed industrial power supplies. Derating curves confirm usable current capacity down to 0A at 150°C ambient when mounted on standard FR-4 PCBs. The HS3AH must be thermally managed to stay within this limit to avoid parametric shift or premature failure.
Is the HS3AH RoHS and halogen-free compliant?
Yes, the HS3AH is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the "Features" section of the Taiwan Semiconductor datasheet. The molding compound meets UL 94V-0 flammability standards, and the matte tin-plated leads satisfy J-STD-002 solderability requirements. These certifications are confirmed for the HS3AH specifically, not just the HS3xH family generically.
Does the HS3AH have AEC-Q101 qualification?
Yes, the HS3AH is explicitly AEC-Q101 qualified, as documented in the "Features" list of the official Taiwan Semiconductor datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and unbiased highly accelerated stress test (UHAST), confirming suitability for automotive electronic control units, lighting modules, and powertrain auxiliary systems.
What is the reverse recovery time (trr) specification for the HS3AH?
The HS3AH has a typical reverse recovery time (trr) of 50 ns, measured under IF = 0.5A, IR = 1.0A, and Irr = 0.25A conditions, per the Electrical Specifications table in the Taiwan Semiconductor datasheet. This value is confirmed for the HS3AH variant only - higher-voltage members (e.g., HS3MH) specify 75 ns. The 50 ns trr supports efficient operation in switching frequencies up to 500 kHz.
What does the "x" in HS3xH ordering code represent for HS3AH?
The "x" in HS3xH denotes the peak reverse voltage rating: for HS3AH, "A" corresponds to 50V VRRM, as defined in the Absolute Maximum Ratings table and Ordering Information section of the Taiwan Semiconductor datasheet. This coding scheme applies across the HS3xH series (e.g., HS3BH = 100V, HS3DH = 200V), and the HS3AH marking on the device body confirms this 50V rating.
HS3AH 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS3AH FAQ
1.How can I place an order for HS3AH through Aetrix?
Please submit a Request for Quotation (RFQ) for HS3AH 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 HS3AH reliable?
The price and inventory of HS3AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS3AH is usually 5 days.
3.What payment methods are accepted for HS3AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS3AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS3AH?
HS3AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS3AH 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 HS3AH?
For technical support, including HS3AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS3AH requirements.
6.How does Aetrix verify that HS3AH is sourced from the original manufacturer or authorized distributors?
All HS3AH 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 HS3AH meets industry standards.
7.What is the process for return or replacement of HS3AH?
All HS3AH units undergo pre-shipment inspection (PSI). If there is an issue with HS3AH, 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 HS3AH part is unused and in its original packaging.
Return procedure for HS3AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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