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Taiwan Semiconductor Corporation 1K5SMPC12APH
- Part No.:
- 1K5SMPC12APH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
1K5SMPC12APH.pdf
- Description:
- 1500W, 12V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
1K5SMPC12APH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode rated for 1500W peak pulse power, 12V breakdown voltage (VBR = 11.4–12.6V at 1mA), and 10.2V stand-off voltage (VWM), designed for automotive-grade overvoltage protection in BLDC motor drives and battery management systems.
For engineers reviewing the 1K5SMPC12APH datasheet, 1K5SMPC12APH pinout, 1K5SMPC12APH application, or 1K5SMPC12APH equivalent, key selection criteria include its AEC-Q101 qualification, IEC 61000-4-2 Level 4/ISO 10605 L4 ESD robustness, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, TO-277A (SMPC4.6U) package, and 175°C maximum junction temperature.
Technical Context
This TVS diode operates as a unidirectional clamping device with a defined breakdown threshold and fast response to transients. Its electrical behavior is characterized by precise VBR (12.0V nominal), low clamping voltage (VC = 16.7V at IPPM = 89.8A), and high surge current capability (IPPM = 89.8A under 10/1000µs waveform).
Thermally, it delivers RθJL = 6.4°C/W and RθJC = 8.9°C/W when mounted on a 16mm × 16mm Cu pad PCB, enabling reliable operation up to TJ = 175°C. Its moisture sensitivity level is J-STD-020 Level 1, and it passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 / 12.0 / 12.6 V at 1 mA - defines precise clamping onset and ensures consistent overvoltage threshold across production units |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage exceeds 2 µA, ensuring no false triggering in 12V rail applications |
| PPPM | 1500 W - peak pulse power handling per 10/1000µs waveform, supporting high-energy load dump and inductive switching events |
| VC @ IPPM | 16.7 V at 89.8 A - clamping voltage during full-rated surge, limiting downstream voltage stress to safe levels for 12V-system ICs |
| TJ max | +175 °C - enables deployment in under-hood automotive environments without thermal derating penalties |
| Polarity | Unidirectional - provides reverse-biased clamping only, suitable for DC power line protection where polarity is fixed |
| Package | TO-277A (SMPC4.6U) - surface-mount outline with dual cathode/anode terminals, optimized for high-current PCB trace routing and thermal dissipation |
Pinout & Package
Package: TO-277A (SMPC4.6U), surface-mount, unidirectional, 3-terminal configuration with dual cathodes and single anode. Molding compound meets UL 94V-0; matte tin-plated leads comply with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode 1 | Primary cathode connection | Carries majority of surge current during clamping; electrically tied to Cathode 2 internally or via PCB layout |
| Cathode 2 | Secondary cathode connection | Provides parallel current path to reduce effective series inductance and improve high-frequency transient response |
| Anode | Common anode terminal | Connected to protected circuit ground or low-side return; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, mechanical shock, and humidity testing per AEC standard |
| IEC 61000-4-2 Level 4 & ISO 10605 L4 compliant | Withstands ±15 kV air discharge and ±8 kV contact discharge ESD without degradation or latch-up |
| ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity | Protects against real-world automotive transients including load dump (Pulse 5a/b not covered), inductive switch-off, and supply reversal |
| RoHS and halogen-free | Meets EU RoHS Directive 2011/65/EU and IEC 61249-2-21, supporting environmentally compliant manufacturing |
| Junction-to-lead thermal resistance (RθJL) | 6.4°C/W - enables efficient heat transfer to PCB copper, critical for sustained surge duty cycles in compact layouts |
Applications
| BLDC Motor Drive Protection | Battery Management System (BMS) |
|---|---|
Use Scenario: Protecting gate drivers and MCU power rails from inductive kickback during PWM commutation in 12V automotive BLDC motors. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed at motor controller input and gate driver supply pins. Use Value: Limits transient voltage to ≤16.7V during 89.8A surges, preventing damage to 20V-rated MOSFET drivers and 5V/3.3V logic supplies. | Use Scenario: Safeguarding cell monitoring ICs and communication interfaces in 12V Li-ion or lead-acid BMS modules exposed to jump-start and alternator load dump. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main battery input and CAN/LIN bus lines. Use Value: Withstands ISO 7637-2 Pulse 5a (load dump) up to 60V for 400ms while maintaining VC below 20V, preserving analog front-end accuracy. |
| Automotive Lighting Control | 12V Switching Mode Power Supply (SMPS) |
Use Scenario: Suppressing transients generated by LED driver switching and relay coil de-energization in headlamp and DRL modules. IC Role / Device Role / Timing Role: Input-stage TVS on 12V supply rail feeding buck/boost LED controllers. Use Value: Clamps 10/1000µs surges to 16.7V within nanoseconds, preventing reset or latch-up of current-mode PWM controllers. | Use Scenario: Input overvoltage protection for industrial and automotive 12V-input SMPS used in infotainment and ADAS ECUs. IC Role / Device Role / Timing Role: Front-end transient suppressor between connector and bulk capacitor. Use Value: Absorbs 1500W pulses without failure, maintaining VWM = 10.2V to avoid conduction during normal 12V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Lower PPPM (400W), SMA package, VBR = 13.3–14.7V, VC = 19.9V @ 20.1A | Not AEC-Q101 qualified; limited to non-automotive industrial use | Select when cost sensitivity outweighs automotive qualification and surge energy requirements |
| 1.5KE12A | Through-hole DO-201 package, PPPM = 1500W, VBR = 12.4–13.7V, VC = 19.2V @ 78.1A | Larger footprint and higher thermal resistance; unsuitable for dense SMT layouts | Choose only if legacy through-hole assembly is required and board space is unconstrained |
Compared with SMAJ12A and 1.5KE12A, the 1K5SMPC12APH delivers automotive-grade reliability in a compact surface-mount package with superior clamping performance (16.7V vs. ≥19.2V), lower thermal resistance, and full ISO 7637-2 compliance - making it the preferred choice for next-generation 12V automotive electronics requiring AEC-Q101 validation and high-density layout.
Availability
1K5SMPC12APH is available at Aetrix Electronics and suitable for BLDC motor drives, battery management systems, and automotive lighting applications requiring stable component supply, AEC-Q101 compliance, and high-energy transient suppression.
Supply support for 1K5SMPC12APH 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, TVS diodes, and rectifiers, with global distribution and automotive qualification capabilities.
The 1K5SMPCxAPH series was developed specifically for high-reliability 12V–51V automotive power rail protection, addressing stringent ISO 7637-2, AEC-Q101, and thermal performance requirements in space-constrained SMT designs.
FAQ
What is the exact breakdown voltage range for 1K5SMPC12APH at 1 mA test current?
The 1K5SMPC12APH has a guaranteed breakdown voltage (VBR) range of 11.4 V to 12.6 V at 1 mA test current, with a nominal value of 12.0 V. This tight tolerance ensures predictable clamping behavior in 12V system designs and is verified per the manufacturer's B2109 datasheet revision. The 1K5SMPC12APH's VBR stability supports robust overvoltage margining in automotive applications.
Is 1K5SMPC12APH qualified for automotive use, and what standards does it meet?
Yes, the 1K5SMPC12APH is AEC-Q101 qualified and certified for automotive applications. It meets IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact), ISO 10605 Level L4, and ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. These qualifications are explicitly stated in the official Taiwan Semiconductor datasheet for the 1K5SMPC12APH, confirming its suitability for under-hood and body-control module deployments.
What is the clamping voltage of 1K5SMPC12APH under full-rated surge current?
The 1K5SMPC12APH clamps to a maximum of 16.7 V when subjected to its peak pulse current (IPPM) of 89.8 A under the standardized 10/1000 µs waveform. This low clamping voltage is critical for protecting downstream 12V-rail components such as microcontrollers and gate drivers. The 1K5SMPC12APH achieves this performance while maintaining unidirectional operation and AEC-Q101 compliance.
What package type does 1K5SMPC12APH use, and what are its mounting characteristics?
The 1K5SMPC12APH uses the TO-277A (SMPC4.6U) surface-mount package - a 3-terminal, unidirectional outline with dual cathodes and one anode. It features matte tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and JESD 201 Class 2 whisker resistance. The 1K5SMPC12APH is designed for reflow soldering on PCBs with 16 mm × 16 mm copper pads to achieve optimal thermal performance (RθJL = 6.4°C/W).
Does 1K5SMPC12APH have a specified junction-to-case thermal resistance?
Yes, the 1K5SMPC12APH has a specified junction-to-case thermal resistance (RθJC) of 8.9°C/W when mounted on the standard test board (16 mm × 16 mm Cu pad). This parameter is essential for thermal modeling in high-power automotive applications and confirms the device's ability to sustain repeated 1500W transients without exceeding TJ = 175°C. The 1K5SMPC12APH's RθJC value is published in the Thermal Performance section of the official datasheet.
1K5SMPC12APH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- 1K5SMPC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 89.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMPC4.6U
1K5SMPC12APH FAQ
1.How can I place an order for 1K5SMPC12APH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1K5SMPC12APH 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 1K5SMPC12APH reliable?
The price and inventory of 1K5SMPC12APH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1K5SMPC12APH is usually 5 days.
3.What payment methods are accepted for 1K5SMPC12APH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1K5SMPC12APH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1K5SMPC12APH?
1K5SMPC12APH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1K5SMPC12APH 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 1K5SMPC12APH?
For technical support, including 1K5SMPC12APH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1K5SMPC12APH requirements.
6.How does Aetrix verify that 1K5SMPC12APH is sourced from the original manufacturer or authorized distributors?
All 1K5SMPC12APH 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 1K5SMPC12APH meets industry standards.
7.What is the process for return or replacement of 1K5SMPC12APH?
All 1K5SMPC12APH units undergo pre-shipment inspection (PSI). If there is an issue with 1K5SMPC12APH, 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 1K5SMPC12APH part is unused and in its original packaging.
Return procedure for 1K5SMPC12APH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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