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Taiwan Semiconductor Corporation HS1KALH
- Part No.:
- HS1KALH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
HS1KALH.pdf
- Description:
- 75NS, 1A, 800V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:28,000
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Product details
Overview
HS1KALH from Taiwan Semiconductor is a 1 A, 800 V glass-passivated surface-mount rectifier in Thin SMA package, featuring 1.49 V forward voltage at 1.0 A and 25°C, 75 ns reverse recovery time, and AEC-Q101 qualification for automotive-grade reliability in DC/DC converters and snubber circuits.
For engineers reviewing the HS1KALH datasheet, HS1KALH pinout, HS1KALH application, or HS1KALH equivalent, key selection criteria include peak reverse voltage (800 V), thermal resistance (RθJL = 29 °C/W), junction temperature range (–55 to +150 °C), and low-profile Thin SMA packaging for high-density power layouts.
Technical Context
This device is a single-die, unidirectional silicon rectifier optimized for fast-switching, high-efficiency power conversion. Its glass-passivated junction ensures stable performance under thermal cycling and humidity stress, while the Thin SMA package supports automated placement and meets J-STD-020 moisture sensitivity level 1.
The HS1KALH operates with a maximum average forward current of 1 A and withstands repetitive peak reverse voltages up to 800 V. Electrical behavior is characterized by a typical junction capacitance of 8 pF at 1 MHz and VR = 4.0 V, enabling reduced switching losses in high-frequency applications such as automotive DC/DC stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or snubber networks |
| IF | 1 A - Continuous average forward current rating; determines steady-state power dissipation capability |
| VF @ 1.0 A, 25°C | 1.49 V (typ), 1.70 V (max) - Directly impacts conduction loss and thermal rise in compact PCB layouts |
| trr | 75 ns - Fast recovery enables efficient operation above 100 kHz switching frequencies |
| CJ | 8 pF @ 1 MHz, 4 V - Low junction capacitance minimizes capacitive coupling and EMI in high-speed switching nodes |
| RθJL | 29 °C/W - Junction-to-lead thermal resistance; enables direct heat transfer to PCB copper pads without heatsink |
| AEC-Q101 | Qualified - Confirmed reliability for automotive underhood applications including temperature cycling and HTRB |
Pinout & Package
Package: Thin SMA - low-profile surface-mount outline with cathode band polarity marking, matte tin-plated leads, UL 94V-0 molding compound, and 0.029 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; requires adequate copper area for thermal management |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; ties to higher-potential node; critical for correct orientation in automated assembly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood use including temperature cycling, HTRB, and mechanical shock |
| Glass-passivated junction | Prevents moisture ingress and metallization corrosion, extending lifetime in humid environments |
| Low-profile Thin SMA package | Enables high-density layout in space-constrained modules such as engine control units and ADAS power supplies |
| Fast 75 ns recovery | Reduces switching loss and ringing in 100–500 kHz DC/DC topologies, improving overall efficiency |
| Junction capacitance: 8 pF | Minimizes displacement current and EMI generation during hard-switching transitions |
Applications
| Automotive Engine Control Unit (ECU) | Industrial DC/DC Converter |
|---|---|
Use Scenario: Freewheeling path in 12 V–48 V bidirectional buck-boost converter for 48 V mild-hybrid systems. IC Role / Device Role / Timing Role: High-voltage rectifier handling transient energy return during MOSFET turn-off. Use Value: 800 V VRRM and AEC-Q101 compliance ensure robust operation across load dump and cold-crank conditions. | Use Scenario: Output rectification in isolated 24 V input, 5 V/3 A flyback supply for PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional current path with minimal conduction loss and fast recovery to reduce output ripple. Use Value: 1.49 V VF at 1 A and 29 °C/W RθJL enable thermally stable operation on standard FR4 with 5 mm × 5 mm Cu pad. |
| Snubber Network in Motor Drive Inverter | On-Board Charger (OBC) Auxiliary Supply |
Use Scenario: RC snubber across IGBT collector-emitter to suppress voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Fast-recovery diode clamping transient energy into capacitor during turn-off. Use Value: 75 ns trr and 8 pF CJ allow precise timing alignment with IGBT switching edges, minimizing overshoot. | Use Scenario: Input rectification stage in auxiliary 12 V supply derived from OBC's high-voltage DC bus. IC Role / Device Role / Timing Role: Primary AC-to-DC conversion element rated for continuous 800 V reverse stress. Use Value: Glass passivation and –55 to +150 °C TJ range support reliable operation in thermally aggressive OBC enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08 | 800 V VRRM, 1 A IF, 75 ns trr, but TO-277 package (larger footprint, higher RθJA) | Less suitable for ultra-thin automotive modules due to 1.1 mm height vs. Thin SMA's 1.0 mm max | Preferred where board-level thermal relief is available and AEC-Q101 not required |
| ES1J | 600 V VRRM, same Thin SMA package, 35 A IFSM, but only 60 ns trr and no AEC-Q101 qualification | Not rated for 800 V systems; limited to 48 V–60 V DC bus applications | Select when cost sensitivity outweighs voltage margin and automotive qualification needs |
Compared with STTH1R08 and ES1J, the HS1KALH uniquely combines 800 V rating, AEC-Q101 qualification, and Thin SMA footprint-enabling direct integration into space- and reliability-constrained automotive power stages without layout or thermal redesign.
Availability
HS1KALH is available at Aetrix Electronics and suitable for automotive engine control units, industrial DC/DC converters, snubber networks, and on-board charger auxiliary supplies requiring stable component supply and long-term lifecycle support.
Supply support for HS1KALH 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 global automotive, industrial, and consumer markets since 1979.
The HS1KALH belongs to TSC's HS1xALH high-voltage rectifier family, engineered specifically for AEC-Q101-compliant, high-efficiency power conversion in automotive and industrial switching power supplies.
FAQ
What is the peak repetitive reverse voltage rating for HS1KALH?
The HS1KALH has a peak repetitive reverse voltage (VRRM) rating of 800 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2103), and defines the maximum reverse-biased voltage the device can block repeatedly without breakdown under normal operating conditions. The HS1KALH is part of the HS1DALH–HS1MALH series where "K" explicitly denotes the 800 V grade.
Is HS1KALH qualified for automotive applications?
Yes, HS1KALH is AEC-Q101 qualified, as stated in the FEATURES section of the official datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock-validating its suitability for underhood automotive systems such as engine control units and ADAS power supplies. The HS1KALH shares this qualification across the full HS1xALH series.
What is the forward voltage drop of HS1KALH at 1.0 A and 25°C?
The forward voltage (VF) of HS1KALH is 1.49 V (typical) and 1.70 V (maximum) at 1.0 A and 25°C, per the Electrical Specifications table. These values are measured under pulsed conditions (PW = 0.3 ms) and directly determine conduction losses in power stage design. At 125°C, VF drops to 1.16 V (typ) due to negative temperature coefficient of silicon diodes.
Does HS1KALH have a specified reverse recovery time?
Yes, HS1KALH has a reverse recovery time (trr) of 75 ns maximum, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is shared with HS1JALH and HS1MALH in the datasheet's Electrical Specifications table and confirms suitability for high-frequency switching applications up to several hundred kHz.
What package type does HS1KALH use, and what are its key mechanical attributes?
HS1KALH uses the Thin SMA package-a low-profile surface-mount outline with cathode band polarity marking, matte tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and moisture sensitivity level 1 per J-STD-020. Its approximate weight is 0.029 g, and it is designed for automated placement in high-volume manufacturing. The package dimensions and pad layout are detailed in the Package Outline Dimensions section of the datasheet.
HS1KALH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 8pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1KALH FAQ
1.How can I place an order for HS1KALH through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1KALH 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 HS1KALH reliable?
The price and inventory of HS1KALH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1KALH is usually 5 days.
3.What payment methods are accepted for HS1KALH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1KALH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1KALH?
HS1KALH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1KALH 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 HS1KALH?
For technical support, including HS1KALH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1KALH requirements.
6.How does Aetrix verify that HS1KALH is sourced from the original manufacturer or authorized distributors?
All HS1KALH 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 HS1KALH meets industry standards.
7.What is the process for return or replacement of HS1KALH?
All HS1KALH units undergo pre-shipment inspection (PSI). If there is an issue with HS1KALH, 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 HS1KALH part is unused and in its original packaging.
Return procedure for HS1KALH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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