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Taiwan Semiconductor Corporation HS2AH
- Part No.:
- HS2AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
HS2AH.pdf
- Description:
- 50NS, 2A, 50V, HIGH EFFICIENT RE
- Quantity:
- Payment:
- Shipping:
Inventory:6,410
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Product details
Overview
HS2AH from Taiwan Semiconductor is a 2 A, 50 V repetitive peak reverse voltage (VRRM) surface-mount Schottky rectifier in DO-214AA (SMB) package, featuring 1.0 V max forward voltage at 2 A and 50 ns reverse recovery time. It is AEC-Q101 qualified and used in automotive DC-DC converters, freewheeling paths, and snubber circuits.
For engineers reviewing the HS2AH datasheet, HS2AH pinout, HS2AH application, or HS2AH equivalent, key selection criteria include its 50 V VRRM, 50 ns trr, 80 °C/W RθJA, AEC-Q101 qualification, and DO-214AA mechanical compatibility with automated SMT assembly.
Technical Context
The HS2AH is a single-die, glass-passivated silicon planar junction rectifier optimized for fast switching and low conduction loss. Its 50 ns reverse recovery time and 1.0 V typical forward voltage at 2 A enable high-efficiency operation in 100–500 kHz DC-DC topologies.
Designed for automotive-grade reliability, it supports junction temperatures from –55 °C to +150 °C and meets JESD201 Class 2 whisker resistance and RoHS/halogen-free requirements per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling clamping |
| IF | 2 A - Continuous average forward current; determines thermal sizing of PCB copper and heatsinking |
| IFSM | 50 A - Peak surge current for 8.3 ms half-sine; supports inrush and transient overload handling |
| trr | 50 ns - Reverse recovery time; enables efficient operation up to ~500 kHz switching frequencies |
| VF @ 2 A | ≤1.0 V - Forward voltage drop; directly impacts conduction loss and thermal rise in power path |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; sets temperature rise under 2 A continuous load on standard FR4 |
| Junction Temp | –55 to +150 °C - Operating range compatible with under-hood automotive environments |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode-indicated band; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter); requires adequate copper area for thermal dissipation |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to higher-potential rail (e.g., output capacitor positive); critical for polarity-sensitive snubber placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD |
| Glass passivated junction | Enhances moisture resistance and long-term reliability in humid or thermally cycled environments |
| Fast switching (50 ns trr) | Reduces switching losses in high-frequency DC-DC stages, improving efficiency above 100 kHz |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for eco-conscious manufacturing |
Applications
| Automotive DC-DC Converter | LED Driver Freewheeling Path |
|---|---|
Use Scenario: Step-down conversion in 12 V vehicle systems powering infotainment or ADAS modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck topology. Use Value: 50 ns trr minimizes switching loss during high-frequency PWM; 1.0 V VF reduces conduction loss at 2 A load. | Use Scenario: Inductive current recirculation in constant-current LED driver for headlamps or DRLs. IC Role / Device Role / Timing Role: Freewheeling diode across boost inductor or linear regulator bypass path. Use Value: AEC-Q101 rating ensures reliability under automotive thermal cycling; DO-214AA footprint fits compact LED module layouts. |
| Snubber Network Clamp | Automotive Cabin Lighting Supply |
Use Scenario: Voltage spike suppression across MOSFETs or relays in body control modules. IC Role / Device Role / Timing Role: Clamp diode in RC snubber network absorbing inductive kickback. Use Value: 50 V VRRM matches common 12 V system transients; fast trr prevents snap-off oscillation during clamp discharge. | Use Scenario: Low-noise, stable 5 V supply for interior ambient lighting controllers. IC Role / Device Role / Timing Role: Secondary-side rectifier in isolated flyback or buck-derived auxiliary supply. Use Value: Glass passivation and –55 °C to +150 °C rating ensure operation across cabin temperature extremes without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-2EYH05-M3/57T | Same DO-214AA package, 50 V VRRM, but 1.1 V VF max at 2 A and 75 ns trr | Slightly higher conduction and switching loss; less suitable for >300 kHz designs | Acceptable where thermal margin exists and cost sensitivity outweighs efficiency gain |
| ON Semiconductor MUR250E | DO-201AD package (axial), 50 V VRRM, 1.05 V VF, 50 ns trr, but not AEC-Q101 qualified | Requires through-hole assembly; unsuitable for automotive production without additional qualification | Only for non-automotive industrial prototypes where AEC-Q101 is not mandated |
Compared with VS-2EYH05-M3/57T and MUR250E, the HS2AH delivers lower VF and identical trr in an AEC-Q101-qualified, surface-mount package-making it the preferred choice for production automotive power supplies requiring validated reliability and SMT scalability.
Availability
HS2AH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED driver freewheeling paths, and snubber network clamps requiring stable component supply and full traceability.
Supply support for HS2AH 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 automotive, industrial, and consumer markets since 1979.
The HS2AH belongs to TSC's HS2xH high-efficiency rectifier family, engineered specifically for AEC-Q101-compliant automotive power conversion where low VF, fast trr, and robust thermal performance are critical.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HS2AH?
The HS2AH has a VRRM of 50 V, as confirmed in the Absolute Maximum Ratings table of the official TSC datasheet (Version A2102). This value defines the highest reverse voltage the device can block repeatedly without breakdown and must be respected in all circuit designs-including snubber and freewheeling applications-to prevent catastrophic failure. Derating to ≤35 V is recommended for long-term reliability in high-temperature environments.
Is HS2AH qualified for automotive use?
Yes, HS2AH is AEC-Q101 qualified, verified per the manufacturer's official documentation. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and electrostatic discharge (ESD). The HS2AH is therefore approved for use in automotive powertrain, body electronics, and lighting systems where reliability under thermal and mechanical stress is mandatory.
What is the forward voltage (VF) of HS2AH at rated current?
The HS2AH exhibits a maximum forward voltage of 1.0 V at 2 A and 25 °C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to minimize self-heating. At elevated temperatures (e.g., 125 °C), VF decreases slightly due to semiconductor physics, but system-level thermal design must still account for worst-case conduction loss using the 1.0 V specification.
Which package does HS2AH use, and what are its mounting features?
HS2AH uses the DO-214AA (SMB) surface-mount package, with matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. The cathode is marked by a visible band, and polarity must be observed during placement. Its compact footprint supports automated pick-and-place and is compatible with standard reflow profiles for lead-free assembly.
What is the reverse recovery time (trr) of HS2AH, and why does it matter?
The HS2AH has a reverse recovery time of 50 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter directly affects switching losses in high-frequency DC-DC converters: shorter trr reduces energy dissipated during turn-off transitions, enabling efficient operation up to ~500 kHz. In snubber applications, fast trr also suppresses voltage ringing caused by parasitic inductance.
HS2AH 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):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS2AH FAQ
1.How can I place an order for HS2AH through Aetrix?
Please submit a Request for Quotation (RFQ) for HS2AH 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 HS2AH reliable?
The price and inventory of HS2AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS2AH is usually 5 days.
3.What payment methods are accepted for HS2AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS2AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS2AH?
HS2AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS2AH 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 HS2AH?
For technical support, including HS2AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS2AH requirements.
6.How does Aetrix verify that HS2AH is sourced from the original manufacturer or authorized distributors?
All HS2AH 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 HS2AH meets industry standards.
7.What is the process for return or replacement of HS2AH?
All HS2AH units undergo pre-shipment inspection (PSI). If there is an issue with HS2AH, 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 HS2AH part is unused and in its original packaging.
Return procedure for HS2AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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