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Taiwan Semiconductor Corporation HS2AAH
- Part No.:
- HS2AAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
HS2AAH.pdf
- Description:
- 50NS, 1.5A, 50V, HIGH EFFICIENT
- Quantity:
- Payment:
- Shipping:
Inventory:2,263
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Product details
Overview
HS2AAH from Taiwan Semiconductor is a 1.5A, 50V repetitive peak reverse voltage (VRRM) surface-mount fast recovery rectifier in DO-214AC (SMA) package, featuring 50 ns reverse recovery time (trr), 1.0 V max forward voltage at 1.5 A, and AEC-Q101 qualification for automotive use in DC-DC converters and freewheeling circuits.
For engineers reviewing the HS2AAH datasheet, HS2AAH pinout, HS2AAH application, or HS2AAH equivalent, key selection considerations include its 50 V VRRM, 50 ns trr, 1.0 V VF @ 1.5 A, DO-214AC mechanical compatibility, and AEC-Q101 qualification for under-hood automotive systems.
Technical Context
The HS2AAH is a single-die, glass-passivated silicon junction rectifier optimized for high-efficiency switching applications. Its 50 ns reverse recovery time and low 1.0 V forward voltage support reduced conduction and switching losses in high-frequency DC-DC topologies.
Designed for automotive-grade reliability, it meets AEC-Q101 stress test requirements and JESD201 Class 2 whisker resistance, with moisture sensitivity level 1 and UL 94V-0 molding compound - enabling direct placement in automated SMT lines without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe operating range in snubber and freewheeling paths. |
| IF | 1.5 A continuous - Rated average forward current; determines thermal design margin at 150°C junction temperature. |
| trr | 50 ns - Measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables efficient operation up to ~2 MHz switching frequencies. |
| VF | ≤1.0 V @ 1.5 A, 25°C - Low conduction loss improves power stage efficiency and reduces heatsink requirements. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance in standard JEDEC PCB layout; sets baseline for thermal derating curves. |
| IFSM | 50 A - Non-repetitive surge rating (8.3 ms half-sine); supports inrush and fault-current handling in automotive power rails. |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, cathode indicated by band, polarity-critical for rectification direction. Weight: 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load or switch node; must withstand full surge current during turn-on. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to higher-potential rail; blocks 50 V reverse voltage with ≤5 µA leakage at 25°C. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood environments including temperature cycling, humidity bias, and mechanical shock per AEC standard. |
| Glass passivated chip junction | Provides stable reverse leakage and long-term reliability against environmental contamination and humidity ingress. |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly without dry-pack or floor-life constraints. |
| Low profile DO-214AC (SMA) | Height ≤2.6 mm; fits space-constrained automotive modules and portable DC-DC converters. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive; suitable for environmentally regulated OEM supply chains. |
Applications
| DC-DC Converter | Automotive Lighting |
|---|---|
Use Scenario: Secondary-side synchronous rectification or output freewheeling in 12 V–48 V automotive buck/boost converters. IC Role / Device Role / Timing Role: Fast recovery rectifier providing unidirectional current path with minimal VF and trr-induced losses. Use Value: Enables >92% efficiency at 1.5 A output with 50 ns trr reducing switching node ringing and EMI generation. | Use Scenario: LED driver output rectification and overvoltage protection in headlamp and DRL modules. IC Role / Device Role / Timing Role: Freewheeling diode across inductive LED current sources and transient suppression in CAN-connected lighting ECUs. Use Value: AEC-Q101 qualification ensures operational stability across -40°C to +125°C ambient, while 50 V VRRM covers load-dump transients. |
| Snubber Network | Freewheeling Application |
Use Scenario: RCD snubber clamp across MOSFETs in flyback or forward converters powering infotainment systems. IC Role / Device Role / Timing Role: Fast-recovery clamping diode that resets snubber capacitor with minimal stored charge. Use Value: 50 ns trr prevents reverse recovery current spikes during MOSFET turn-on, improving snubber energy transfer accuracy. | Use Scenario: Inductive load commutation in solenoid drivers, HVAC actuators, and fuel pump controllers. IC Role / Device Role / Timing Role: Freewheeling path for back-EMF energy dissipation when switching off 12 V inductive coils. Use Value: 50 A IFSM rating handles repeated inductive kickback surges; glass passivation ensures long-term leakage stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L50 | Same DO-214AC package, 1.5 A IF, but 50 V VRRM and 75 ns trr; VF ≈ 0.95 V @ 1.5 A. | Higher trr increases switching loss in >500 kHz designs; suitable where EMI is less critical. | Prefer HS2AAH where faster recovery and AEC-Q101 compliance are required. |
| MBR150 | DO-41 through-hole; 1.5 A IF, 50 V VRRM, Schottky architecture; VF ≈ 0.55 V but no AEC-Q101 rating. | Lower VF reduces conduction loss, but lacks automotive qualification and has higher leakage above 85°C. | HS2AAH preferred for SMT automotive production; MBR150 only for non-automotive prototyping. |
Compared with STTH1L50 and MBR150, HS2AAH uniquely combines AEC-Q101 qualification, 50 ns trr, and DO-214AC SMT compatibility - making it the only drop-in-qualified option for production automotive DC-DC and lighting modules requiring zero rework on thermal or reliability validation.
Availability
HS2AAH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter design, and freewheeling applications requiring stable component supply, AEC-Q101 traceability, and DO-214AC footprint consistency.
Supply support for HS2AAH 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 HS2AAH belongs to TSC's HS2x series of AEC-Q101-qualified fast recovery rectifiers, engineered specifically for high-reliability automotive power conversion and inductive load control where thermal robustness and switching speed are critical.
FAQ
What is the maximum junction temperature rating for HS2AAH?
The HS2AAH has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating allows operation in under-hood automotive environments when mounted on standard FR-4 PCBs with appropriate copper area. Derating begins above 25°C ambient per the forward current derating curve, and HS2AAH must not exceed this limit during steady-state or transient conditions.
Is HS2AAH pin-compatible with other parts in the HS2xAH family?
Yes, all HS2xAH parts-including HS2AAH, HS2BAH, and up to HS2MAH-share identical DO-214AC (SMA) package dimensions, lead pitch, and cathode-band polarity marking. Mechanical and soldering compatibility is guaranteed across the family; only VRRM, trr, and VF vary by voltage grade. HS2AAH can be substituted on the same footprint for 50 V designs without layout change.
Does HS2AAH meet automotive qualification standards?
Yes, HS2AAH is explicitly AEC-Q101 qualified per the manufacturer's documentation, covering stress tests including temperature cycling, high-temperature reverse bias, and mechanical shock. This qualification applies specifically to the HS2AAH variant-not inferred from the family-and is confirmed in the "Features" section of the official datasheet revision A2102.
What is the reverse leakage current specification for HS2AAH at elevated temperature?
At 125°C junction temperature and rated 50 V reverse voltage, HS2AAH exhibits a maximum reverse current (IR) of 100 µA, as specified in the Electrical Specifications table. At 25°C, the limit is 5 µA. This leakage behavior is measured under pulse conditions (PW = 30 ms) and remains stable due to glass passivation of the junction.
Can HS2AAH be used in surface-mount reflow processes without pre-baking?
Yes, HS2AAH has Moisture Sensitivity Level (MSL) 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and placed directly into standard lead-free reflow profiles (e.g., JEDEC J-STD-020 Class 3) without baking. No floor life limitation or dry-pack requirement applies, simplifying SMT line integration.
HS2AAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 1.5 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-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS2AAH FAQ
1.How can I place an order for HS2AAH through Aetrix?
Please submit a Request for Quotation (RFQ) for HS2AAH 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 HS2AAH reliable?
The price and inventory of HS2AAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS2AAH is usually 5 days.
3.What payment methods are accepted for HS2AAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS2AAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS2AAH?
HS2AAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS2AAH 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 HS2AAH?
For technical support, including HS2AAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS2AAH requirements.
6.How does Aetrix verify that HS2AAH is sourced from the original manufacturer or authorized distributors?
All HS2AAH 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 HS2AAH meets industry standards.
7.What is the process for return or replacement of HS2AAH?
All HS2AAH units undergo pre-shipment inspection (PSI). If there is an issue with HS2AAH, 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 HS2AAH part is unused and in its original packaging.
Return procedure for HS2AAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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