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Taiwan Semiconductor Corporation 3KSMC23AH
- Part No.:
- 3KSMC23AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KSMC23AH.pdf
- Description:
- 3000W, 23.4V, 5%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,450
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Product details
Overview
3KSMC23AH from Taiwan Semiconductor is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 23.4V typical breakdown voltage (VBR), 32.4V maximum clamping voltage (VC) at 92.6A peak pulse current, and AEC-Q101 qualification for automotive reliability.
For engineers reviewing the 3KSMC23AH datasheet, 3KSMC23AH pinout, 3KSMC23AH application, or 3KSMC23AH equivalent, this device serves as a robust overvoltage protection component in high-energy surge environments such as BLDC motor drives, battery management systems, and ISO 7637-2-compliant automotive power lines.
Technical Context
The 3KSMC23AH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 22.2–24.6V VBR range at 1mA test current. Its 32.4V clamping voltage at 92.6A (10/1000µs) ensures low-voltage overshoot suppression during transients.
Thermally, it features RθJL = 17°C/W and RθJA = 50°C/W on a 16mm × 16mm Cu pad PCB, supporting continuous power dissipation up to 8.5W at TL = 25°C and junction temperatures from –55°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.2 / 23.4 / 24.6 V @ 1 mA - defines precise avalanche onset threshold for predictable overvoltage triggering |
| VC @ IPPM | 32.4 V @ 92.6 A (10/1000 µs) - limits downstream circuit voltage during worst-case surge events |
| PPPM | 3000 W - sustains high-energy transients per IEC 61000-4-2 Level 4 and ISO 10605 L4 |
| RD | 0.097 Ω - dynamic resistance determines clamping voltage rise slope under surge current |
| TJ Range | –55°C to +175°C - enables operation in under-hood automotive and industrial power supply environments |
| αT | 9.4 × 10–4/°C - temperature coefficient used to adjust VBR and VC across operating temperature range |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional polarity indicated by cathode band. Weight: ~0.210 g. Matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Avalanche conduction terminal | Connected to protected line (e.g., 24V rail); clamps to VC when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JESD47 |
| IEC 61000-4-2 / ISO 10605 Level 4 compliance | Withstands ±15 kV air discharge and ±8 kV contact discharge without degradation |
| ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity | Protects against load dump, inductive switching, and supply line transients in vehicle ECUs |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally restricted substances |
Applications
| BLDC Motor Drive Protection | Battery Management System (BMS) |
|---|---|
Use Scenario: Suppresses inductive kickback and commutation spikes on 24V BLDC gate driver power rails. IC Role / Device Role / Timing Role: Unidirectional TVS placed between motor phase output and ground to clamp transients below MOSFET VDS rating. Use Value: Limits VC to 32.4V at 92.6A, preventing gate oxide damage and ensuring >100,000-cycle reliability per ISO 7637-2 Pulse 2b. | Use Scenario: Guards cell monitor IC inputs and CAN bus power lines against jump-start surges and charger transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24V auxiliary supply input to BMS controller board. Use Value: Withstands 3000W pulses while maintaining <1 µA leakage at 20V (VWM), preserving low-power sleep mode integrity. |
| Automotive Lighting Control | Industrial SMPS Input Stage |
Use Scenario: Protects LED driver ICs and microcontrollers in headlamp modules exposed to load dump events. IC Role / Device Role / Timing Role: Front-end TVS on switched 24V supply line upstream of DC/DC converter. Use Value: Clamps ISO 7637-2 Pulse 5a (load dump) to ≤32.4V within 10 ns, avoiding latch-up in downstream logic. | Use Scenario: Shields AC-DC PFC stage and primary-side controller from lightning-induced surges on 230VAC input. IC Role / Device Role / Timing Role: Secondary-side TVS on 24V bias rail feeding PWM controller and optocoupler. Use Value: Delivers 3000W peak power handling with RθJA = 50°C/W, enabling stable operation at 85°C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower PPPM (600W), higher VC (38.9V @ 15.4A), SMB package (smaller thermal mass) | Not suitable for ISO 7637-2 Pulse 5a or high-current Pulse 1; limited to low-energy consumer-grade surges | Select only for cost-sensitive non-automotive designs where 3000W rating is unnecessary |
| SMCJ24A | Same DO-214AB package, but 3000W rating with VBR = 26.7–29.5V and VC = 38.9V @ 77.1A - higher clamping voltage than 3KSMC23AH | Acceptable for general industrial SMPS, but less effective for tight-clamp 24V systems requiring sub-33V VC | Choose when footprint compatibility is critical and 32.4V clamping is required; verify layout thermal relief matches 3KSMC23AH's RθJL = 17°C/W |
Compared with SMBJ24A and SMCJ24A, the 3KSMC23AH delivers tighter VBR tolerance (±2.7V), lower VC (32.4V vs. ≥38.9V), and verified AEC-Q101 qualification - making it the preferred choice for automotive 24V rail protection where clamping margin and reliability are design-critical.
Availability
3KSMC23AH is available at Aetrix Electronics and suitable for BLDC motor drives, battery management systems, and automotive lighting applications requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 3KSMC23AH 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 3KSMCxxAH series belongs to TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for harsh-environment overvoltage protection in 12–48V automotive and industrial power systems.
FAQ
What is the maximum clamping voltage of the 3KSMC23AH under a 10/1000µs surge?
The 3KSMC23AH has a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current of 92.6 A with a 10/1000 µs waveform. This value is measured at TA = 25°C and reflects the upper limit of voltage seen by protected circuitry during worst-case transient events. The 3KSMC23AH maintains this performance across its specified junction temperature range due to its 9.4 × 10–4/°C temperature coefficient.
Is the 3KSMC23AH suitable for automotive applications?
Yes, the 3KSMC23AH is AEC-Q101 qualified and meets ISO 7637-2 (Pulse 1/2a/2b/3a/3b) and ISO 10605 (Level L4) standards, confirming its suitability for automotive use. It supports junction temperatures from –55°C to +175°C and is designed for under-hood and ECU-level protection. The 3KSMC23AH also complies with halogen-free and RoHS requirements mandated for modern vehicle platforms.
What is the standoff voltage (VWM) of the 3KSMC23AH?
The working peak reverse voltage (VWM) of the 3KSMC23AH is 20 V, meaning it remains in high-impedance blocking state up to this voltage with leakage current ≤3 µA at 25°C. This allows safe operation on nominal 24V systems where normal ripple and tolerance stay below 20V, while still providing margin before avalanche conduction begins at VBR (min 22.2 V).
How does the 3KSMC23AH differ from the 3KSMC24AH?
The 3KSMC23AH has a VBR range of 22.2–24.6 V and VC = 32.4 V, whereas the 3KSMC24AH (not covered here) specifies VBR = 23.1–25.5 V and VC = 33.2 V. The 3KSMC23AH offers tighter clamping for 24V nominal rails where sub-33V protection is critical. Both share identical DO-214AB packaging, 3000W rating, and AEC-Q101 qualification - the 3KSMC23AH is selected when lower VC is prioritized over VBR centering.
What is the thermal resistance from junction to lead (RθJL) for the 3KSMC23AH?
The junction-to-lead thermal resistance (RθJL) of the 3KSMC23AH is 17°C/W, measured on a standard 16 mm × 16 mm copper pad PCB. This low value enables efficient heat transfer from the silicon die to the PCB copper, supporting reliable 8.5W steady-state power dissipation at lead temperature TL = 25°C. Proper thermal pad design is essential to maintain this performance in production layouts.
3KSMC23AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V (Max)
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 92.6A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
3KSMC23AH FAQ
1.How can I place an order for 3KSMC23AH through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KSMC23AH 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 3KSMC23AH reliable?
The price and inventory of 3KSMC23AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KSMC23AH is usually 5 days.
3.What payment methods are accepted for 3KSMC23AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KSMC23AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KSMC23AH?
3KSMC23AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KSMC23AH 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 3KSMC23AH?
For technical support, including 3KSMC23AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KSMC23AH requirements.
6.How does Aetrix verify that 3KSMC23AH is sourced from the original manufacturer or authorized distributors?
All 3KSMC23AH 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 3KSMC23AH meets industry standards.
7.What is the process for return or replacement of 3KSMC23AH?
All 3KSMC23AH units undergo pre-shipment inspection (PSI). If there is an issue with 3KSMC23AH, 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 3KSMC23AH part is unused and in its original packaging.
Return procedure for 3KSMC23AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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