My Inquiry
My Account
Taiwan Semiconductor Corporation HS2KAH
- Part No.:
- HS2KAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
HS2KAH.pdf
- Description:
- 75NS, 1.5A, 800V, HIGH EFFICIENT
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HS2KAH from Taiwan Semiconductor is a 1.5A, 800V repetitive peak reverse voltage (VRRM) surface-mount fast recovery rectifier in DO-214AC (SMA) package, featuring 75 ns reverse recovery time (trr), 1.7 V forward voltage at 1.5 A, and 30 pF junction capacitance at 1 MHz/4 V - used in automotive snubber and freewheeling circuits.
For engineers reviewing the HS2KAH datasheet, HS2KAH pinout, HS2KAH application, or HS2KAH equivalent, this page delivers verified electrical parameters, thermal resistance (80 °C/W), AEC-Q101 qualification status, moisture sensitivity level (MSL 1), and real-world use context for DC-DC converter and car lighting designs.
Technical Context
The HS2KAH is a single-die, glass-passivated silicon rectifier optimized for high-efficiency switching applications. Its 800 V VRRM, 75 ns trr, and 1.7 V VF at 1.5 A support fast transient response in flyback and boost converters.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and operates across –55 °C to +150 °C junction temperature range with MSL 1 handling per J-STD-020 - enabling direct placement in automated SMT lines without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports input rails up to 560 VRMS in AC-DC front ends |
| IF | 1.5 A continuous - sustains steady-state current in low-power DC-DC stages |
| trr | 75 ns - reduces switching losses in 100–500 kHz power topologies |
| VF | 1.7 V @ 1.5 A, 25 °C - limits conduction loss to ≤2.55 W in worst-case thermal condition |
| RθJA | 80 °C/W - requires ≥25 mm² copper pad for safe operation at full IF |
| CJ | 30 pF @ 1 MHz, 4 V - minimizes capacitive coupling noise in high-dv/dt gate drive paths |
| IFSM | 50 A @ 8.3 ms - withstands inrush surges in automotive load-dump scenarios |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case meeting UL 94V-0, matte tin-plated leads solderable per J-STD-002, cathode indicated by band, weight ≈0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode | Current exit point during forward conduction; polarity marked by band | Connected to higher-potential rail (e.g., output capacitor positive terminal) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood environments including temperature cycling and HTRB |
| Glass passivated junction | Prevents moisture-induced leakage degradation and improves long-term IR stability |
| MSL 1 rating | Zero bake requirement before reflow - compatible with standard SMT assembly lines |
| Low profile SMA package | Height ≤2.6 mm - enables compact layout in space-constrained modules like LED drivers |
| Halogen-free construction | Complies with IEC 61249-2-21 - supports RoHS-compliant end-product certification |
Applications
| Automotive DC-DC Converters | LED Headlamp Drivers |
|---|---|
Use Scenario: Step-down conversion from 12 V battery to 5 V/3.3 V for ECU power rails in passenger vehicles. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter secondary path. Use Value: 75 ns trr and 1.7 V VF reduce switching loss and thermal rise versus slower 1N5822-class diodes. | Use Scenario: Constant-current regulation for high-brightness LED arrays in adaptive front-lighting systems. IC Role / Device Role / Timing Role: Snubber diode clamping inductive kickback from LED driver MOSFETs. Use Value: 800 V VRRM safely absorbs >600 V transients during PWM dimming transitions. |
| Industrial Power Supplies | On-Board Charger Auxiliary Rails |
Use Scenario: Output rectification in isolated 24 V/1 A auxiliary supplies for PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side rectifier in flyback topology. Use Value: 30 pF CJ minimizes EMI generation at 100–200 kHz switching frequencies. | Use Scenario: Bias supply generation from HV bus in EV on-board chargers. IC Role / Device Role / Timing Role: High-voltage clamp diode in resonant LLC auxiliary winding circuit. Use Value: AEC-Q101 qualification ensures reliability under repeated thermal cycling during charge cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-1N5819HM3/85A | 40 V VRRM, 1 A IF, 1.2 V VF, 30 ns trr - lower voltage/current rating | Suitable only for ≤28 V DC-DC outputs; not rated for automotive transients | Select only for low-voltage consumer power rails where 800 V capability is unnecessary |
| ON Semiconductor MUR160 | 600 V VRRM, 1 A IF, 1.25 V VF, 60 ns trr, TO-220AC package - lower voltage, higher thermal mass | Requires heatsink for >0.5 A; incompatible with SMT-only layouts | Choose when board-level thermal management allows through-hole mounting and 600 V suffices |
Compared with VS-1N5819HM3/85A and MUR160, the HS2KAH uniquely combines 800 V rating, 1.5 A current, SMA packaging, and AEC-Q101 compliance - making it the only drop-in solution for automotive-grade 12 V–48 V system snubbers requiring no layout change.
Availability
HS2KAH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter design, and industrial snubber circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for HS2KAH 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 computing markets since 1979.
The HS2KAH belongs to TSC's HS2x series of AEC-Q101-qualified fast recovery rectifiers - engineered specifically for high-reliability automotive power conversion and transient suppression where robustness, consistency, and SMT compatibility are critical.
FAQ
What is the maximum junction temperature rating for HS2KAH?
The HS2KAH has a maximum junction temperature (TJ) of +150 °C and a minimum of –55 °C. This wide operating range enables deployment in under-hood automotive environments and industrial enclosures without active cooling. Derating curves confirm 1.5 A continuous current is maintainable up to 115 °C ambient with adequate PCB copper area. The HS2KAH must not exceed 150 °C at the die level during operation.
Is HS2KAH suitable for use in AEC-Q101-compliant automotive designs?
Yes, HS2KAH is explicitly qualified to AEC-Q101 standards, including stress tests for temperature cycling, high-temperature reverse bias, and unbiased high-humidity storage. Its glass-passivated junction, MSL 1 rating, and halogen-free construction meet automotive OEM requirements for power conversion and lighting subsystems. HS2KAH is documented in TSC's A2102 revision as qualified for automotive applications.
What does the marking code 'HS2KAH' indicate on the device body?
The marking code 'HS2KAH' identifies the specific variant within the HS2x family: 'K' denotes 800 V VRRM, and 'H' indicates the DO-214AC (SMA) package. This matches the ordering code structure defined in TSC's datasheet - where 'x' maps to voltage grade (A=50 V, B=100 V, ..., K=800 V, M=1000 V). No additional date or factory codes are embedded in the 'HS2KAH' marking itself.
How does the junction capacitance of HS2KAH affect EMI performance?
HS2KAH exhibits 30 pF junction capacitance at 1 MHz and 4 V reverse bias - significantly lower than earlier-generation rectifiers (e.g., 50 pF in HS2AAH–HS2GAH variants). This reduced CJ lowers high-frequency displacement current during switching transitions, directly suppressing common-mode EMI in 100–500 kHz DC-DC converters. Layout-sensitive applications benefit from predictable capacitive loading on switch nodes.
Can HS2KAH replace HS2JAH or HS2MAH in an existing design?
HS2KAH is not a direct replacement for HS2JAH (600 V) or HS2MAH (1000 V) without verifying voltage margin and thermal behavior. While all share identical package, pinout, and thermal resistance, their VRRM differs: HS2JAH = 600 V, HS2KAH = 800 V, HS2MAH = 1000 V. Substituting HS2KAH for HS2JAH increases voltage headroom; substituting for HS2MAH reduces it - both require revalidation of worst-case transient immunity and derating curves.
HS2KAH 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):
- 800 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- 30pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS2KAH FAQ
1.How can I place an order for HS2KAH through Aetrix?
Please submit a Request for Quotation (RFQ) for HS2KAH 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 HS2KAH reliable?
The price and inventory of HS2KAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS2KAH is usually 5 days.
3.What payment methods are accepted for HS2KAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS2KAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS2KAH?
HS2KAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS2KAH 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 HS2KAH?
For technical support, including HS2KAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS2KAH requirements.
6.How does Aetrix verify that HS2KAH is sourced from the original manufacturer or authorized distributors?
All HS2KAH 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 HS2KAH meets industry standards.
7.What is the process for return or replacement of HS2KAH?
All HS2KAH units undergo pre-shipment inspection (PSI). If there is an issue with HS2KAH, 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 HS2KAH part is unused and in its original packaging.
Return procedure for HS2KAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HS2KAH 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…
