My Inquiry
My Account
Taiwan Semiconductor Corporation HS2KALH
- Part No.:
- HS2KALH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
HS2KALH.pdf
- Description:
- 75NS, 2A, 800V, HIGH EFFICIENT R
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HS2KALH from Taiwan Semiconductor is a 2 A, 800 V glass-passivated surface-mount rectifier in Thin SMA package, featuring 1.48 V forward voltage at 2 A/25°C, 75 ns reverse recovery time, and AEC-Q101 qualification for automotive-grade reliability. It serves as a high-efficiency freewheeling or snubber diode in DC/DC converters operating up to 150°C junction temperature.
For engineers reviewing the HS2KALH datasheet, HS2KALH pinout, HS2KALH application, or HS2KALH equivalent, key selection criteria include peak reverse voltage (800 V), thermal resistance (RθJL = 17 °C/W), junction capacitance (12 pF), and automotive qualification status - all critical for power conversion and automotive subsystem design.
Technical Context
The HS2KALH is a single-die, unidirectional silicon rectifier optimized for fast switching and low conduction loss in medium-voltage power supplies. Its glass-passivated junction ensures stable leakage performance across temperature, while the Thin SMA package enables automated placement and supports high-density PCB layouts.
Designed for operation under repetitive surge conditions (IFSM = 60 A at 8.3 ms), it maintains reliable reverse blocking up to 800 V with IR ≤ 1 µA at 25°C and ≤ 80 µA at 125°C. The 75 ns trr and 12 pF CJ support efficient high-frequency rectification in DC/DC topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse voltage; defines safe blocking capability in 400–600 V DC bus applications |
| IF | 2 A continuous - Rated average forward current; supports sustained power delivery without derating below 100°C ambient |
| VF @ 2 A, 25°C | 1.48 V typical - Directly determines conduction loss (Pcond ≈ 2.96 W) and thermal load in linear operation |
| trr | 75 ns max - Enables use in 100–500 kHz switching converters with minimal switching loss and EMI generation |
| CJ | 12 pF @ 1 MHz, 4 V - Low junction capacitance reduces capacitive turn-on loss and improves high-frequency efficiency |
| RθJL | 17 °C/W - Junction-to-lead thermal resistance; enables direct heat transfer to PCB copper, simplifying thermal design |
| AEC-Q101 | Qualified - Confirmed reliability for automotive power electronics including engine control, lighting, and ADAS subsystems |
Pinout & Package
Package: Thin SMA - Low-profile, surface-mount package with matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), and UL 94V-0 molding compound. Cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; accepts 2 A continuous forward current with <1.5 V drop |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; sustains 800 V reverse bias with <1 µA leakage at 25°C |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable IR and VF over temperature and lifetime; eliminates risk of junction corrosion in humid environments |
| AEC-Q101 qualification | Validated for automotive use per stress test requirements including HTOL, TC, and HTRB - no additional qualification needed |
| Low-profile Thin SMA | Enables automated SMT placement and supports board thickness constraints in space-constrained modules (e.g., LED drivers) |
| 12 pF junction capacitance | Reduces displacement current during switching transitions, lowering EMI and gate drive burden in synchronous rectifier circuits |
| RθJL = 17 °C/W | Allows direct thermal coupling to PCB copper pad; achieves >100°C/W effective RθJA on standard 5 mm × 5 mm Cu pad |
Applications
| Automotive Lighting Systems | Industrial DC/DC Converters |
|---|---|
Use Scenario: High-brightness LED driver with buck topology and active freewheeling path. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current recirculation during MOSFET off-time. Use Value: 1.48 V VF minimizes conduction loss; AEC-Q101 qualification ensures compliance with automotive EMC and reliability standards. | Use Scenario: Isolated 24 V to 5 V flyback converter powering industrial I/O modules. IC Role / Device Role / Timing Role: Secondary-side output rectifier handling 2 A continuous output current. Use Value: 75 ns trr and 12 pF CJ reduce switching losses and improve efficiency above 200 kHz operation. |
| Snubber Networks | On-Board Charger (OBC) Auxiliary Supplies |
Use Scenario: RCD snubber across primary-side MOSFET in LLC resonant converter. IC Role / Device Role / Timing Role: Fast-recovery clamping diode absorbing voltage spikes during turn-off. Use Value: 800 V VRRM withstands transient overvoltage; 75 ns trr prevents reverse recovery oscillation. | Use Scenario: Auxiliary 12 V supply derived from high-voltage battery bus in EV on-board charger. IC Role / Device Role / Timing Role: Input rectifier stepping down 400–800 V DC to intermediate bus prior to regulation. Use Value: Glass passivation and 150°C TJMAX ensure long-term stability under continuous high-temperature operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R08 | 800 V VRRM, 2 A IF, 75 ns trr, but VF = 1.7 V @ 2 A - +15% conduction loss vs. HS2KALH | Same freewheeling/snubber use, but higher thermal load requires larger heatsinking | Prefer HS2KALH where VF-sensitive efficiency or thermal margin is critical |
| ES2J | 600 V VRRM, 2 A IF, 35 ns trr, VF = 1.7 V @ 2 A - lower voltage rating, faster recovery, higher VF | Suitable only for ≤600 V systems; not acceptable for 800 V bus applications | Select HS2KALH when 800 V blocking and AEC-Q101 are mandatory |
Compared with STTH2R08 and ES2J, the HS2KALH delivers superior forward voltage (1.48 V vs. ≥1.7 V) and full AEC-Q101 qualification - making it the preferred choice for automotive 800 V auxiliary supplies and thermally constrained industrial converters.
Availability
HS2KALH is available at Aetrix Electronics and suitable for automotive lighting systems, industrial DC/DC converters, snubber networks, and on-board charger auxiliary supplies requiring stable component supply and automotive-grade reliability.
Supply support for HS2KALH 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with global distribution and AEC-Q101-compliant product lines.
The HS2KALH belongs to TSC's HS2xALH high-efficiency rectifier family, designed specifically for automotive and industrial power conversion where high voltage blocking, fast recovery, and thermal robustness are essential.
FAQ
What is the maximum junction temperature rating for HS2KALH?
The HS2KALH has a maximum junction temperature (TJMAX) of +150°C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as engine compartments or enclosed industrial power modules. Derating begins above 100°C ambient, and thermal design must account for RθJL = 17 °C/W to maintain safe TJ under 2 A load. The HS2KALH datasheet specifies this limit across all versions in the HS2xALH series.
Is HS2KALH pin-compatible with other parts in the HS2xALH family?
Yes, all HS2xALH variants - including HS2DALH, HS2GALH, HS2JALH, HS2KALH, and HS2MALH - share identical Thin SMA package dimensions, pinout, and mechanical footprint. The only differences are VRRM (200–1000 V) and corresponding electrical parameters like VF and CJ. This enables drop-in voltage-scaling substitutions without PCB layout changes, provided thermal and electrical margins are re-verified for the selected variant.
Does HS2KALH meet automotive qualification standards?
Yes, HS2KALH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This includes stress testing for high-temperature operating life, temperature cycling, and highly accelerated stress testing. The qualification applies to the entire HS2xALH family, and HS2KALH carries the same qualification status as HS2DALH through HS2MALH - confirming suitability for automotive powertrain, body electronics, and ADAS applications.
What is the reverse recovery time (trr) specification for HS2KALH?
The HS2KALH has a maximum reverse recovery time (trr) of 75 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is confirmed in the Electrical Specifications table and applies identically to HS2JALH, HS2KALH, and HS2MALH. The 75 ns trr supports efficient operation in switch-mode power supplies operating up to 500 kHz without excessive switching loss or ringing.
How does the junction capacitance of HS2KALH affect high-frequency performance?
The HS2KALH exhibits 12 pF typical junction capacitance (CJ) at 1 MHz and 4 V reverse bias - the lowest in the HS2xALH family. This low CJ reduces displacement current during voltage transitions, minimizing EMI generation and gate-drive loading in synchronous rectifier or active clamp circuits. It directly contributes to improved efficiency in high-frequency DC/DC converters where capacitive switching loss dominates.
HS2KALH 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):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 12pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS2KALH FAQ
1.How can I place an order for HS2KALH through Aetrix?
Please submit a Request for Quotation (RFQ) for HS2KALH 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 HS2KALH reliable?
The price and inventory of HS2KALH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS2KALH is usually 5 days.
3.What payment methods are accepted for HS2KALH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS2KALH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS2KALH?
HS2KALH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS2KALH 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 HS2KALH?
For technical support, including HS2KALH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS2KALH requirements.
6.How does Aetrix verify that HS2KALH is sourced from the original manufacturer or authorized distributors?
All HS2KALH 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 HS2KALH meets industry standards.
7.What is the process for return or replacement of HS2KALH?
All HS2KALH units undergo pre-shipment inspection (PSI). If there is an issue with HS2KALH, 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 HS2KALH part is unused and in its original packaging.
Return procedure for HS2KALH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HS2KALH Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
