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Taiwan Semiconductor Corporation 1K5SMPC24APH
- Part No.:
- 1K5SMPC24APH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
1K5SMPC24APH.pdf
- Description:
- 1500W, 24V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,998
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Product details
Overview
1K5SMPC24APH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode rated for 1500W peak pulse power, 24.0V nominal breakdown voltage (VBR), and 33.2V maximum clamping voltage (VC) at 45.2A peak pulse current (IPPM). It is designed for automotive-grade overvoltage protection in BLDC motor drives and battery management systems.
For engineers reviewing the 1K5SMPC24APH datasheet, 1K5SMPC24APH pinout, 1K5SMPC24APH application, or 1K5SMPC24APH equivalent, key selection criteria include its AEC-Q101 qualification, TO-277A (SMPC4.6U) package, 20.5V stand-off voltage (VWM), 1.0μA max reverse leakage at VWM, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b and IEC 61000-4-2 Level 4.
Technical Context
This TVS diode operates as a unidirectional clamping device with a junction temperature range of –55°C to +175°C and thermal resistance RθJL = 6.4°C/W. Its 10/1000µs waveform rating enables robust surge suppression in automotive power electronics.
The device features low clamping ratio (VC/VBR ≈ 1.38), tight VBR tolerance (±5% at 24.0V), and temperature coefficient αT = 0.085%/°C - enabling predictable voltage drift across operating temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8V / 24.0V / 25.2V - ensures reliable triggering above 20.5V system stand-off voltage |
| VWM | 20.5V - maximum continuous reverse working voltage before leakage exceeds 1.0μA |
| VC @ IPPM | 33.2V - clamps transients to safe levels during 45.2A 10/1000µs surges |
| PPPM | 1500W - handles high-energy load dump and inductive switching events |
| TJ max | +175°C - supports under-hood automotive environments without derating |
| Polarity | Unidirectional - protects against negative-going transients only, simplifying circuit integration |
| RθJL | 6.4°C/W - enables efficient heat transfer to PCB copper pad for sustained surge duty |
Pinout & Package
Package: TO-277A (SMPC4.6U), surface-mount, unidirectional configuration with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Current return path during clamping | Connected to ground or low-side reference; completes conduction path when VAK > VBR |
| Cathode 1 (Pin 1) | High-side transient input node | Connected to protected line (e.g., motor phase, battery rail); conducts surge current to Anode |
| Cathode 2 (Pin 2) | Redundant cathode terminal | Electrically tied to Cathode 1 internally; provides mechanical stability and dual-point solder attachment |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTOL, TC, UHAST, and ESD |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Guarantees immunity to real-world automotive transients including load dump and inductive kickback |
| IEC 61000-4-2 Level 4 & ISO 10605 L4 | Withstands ±15kV air discharge and ±8kV contact discharge ESD events |
| UL 94V-0 molding compound | Ensures flame-retardant behavior in high-temperature under-hood environments |
| Moisture sensitivity level 1 | Allows unlimited floor life without dry-pack handling or baking prior to reflow |
Applications
| BLDC Motor Drive Protection | Battery Management System (BMS) |
|---|---|
Use Scenario: Suppresses inductive flyback spikes from PWM-driven gate drivers and phase-switching MOSFETs in 24V automotive BLDC motors. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across motor phases or supply rails to clamp transients below MOSFET VDSS rating. Use Value: Prevents gate oxide damage and latch-up by limiting VC to 33.2V during 45.2A surges, maintaining system reliability over 10,000+ cycles. | Use Scenario: Protects cell monitoring ICs and communication interfaces from load dump and jump-start transients on 24V battery packs. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 20.5V) placed at BMS input to absorb ISO 7637-2 Pulse 5a energy without leakage-induced measurement error. Use Value: Maintains <1.0μA reverse leakage at 20.5V, ensuring accurate voltage sensing while surviving 1500W surges. |
| Automotive Lighting Control | Switching Mode Power Supply (SMPS) |
Use Scenario: Shields LED driver ICs and CAN/LIN transceivers from alternator ripple and relay bounce in headlamp modules. IC Role / Device Role / Timing Role: Fast-response unidirectional TVS connected between supply rail and ground to clamp sub-100ns transients. Use Value: Achieves 33.2V clamping within 1.0ns response time, preventing false resets and communication errors in lighting ECUs. | Use Scenario: Safeguards primary-side controllers and secondary-side rectifiers in 24V-input DC/DC converters used in ADAS domain controllers. IC Role / Device Role / Timing Role: Input-stage TVS with 20.5V VWM and 1500W PPPM absorbs switching noise and line surges before they reach regulation circuitry. Use Value: Enables stable operation under 10/1000µs surges up to 45.2A without derating, supporting 100% duty-cycle SMPS designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Lower PPPM (400W), SMA package, higher VC/VBR ratio (1.55), non-AEC-Q101 | Not suitable for automotive load dump; limited to industrial SMPS or consumer lighting | Select only if cost-sensitive and AEC-Q101/ISO 7637-2 compliance is not required |
| 1.5KE24A | Through-hole DO-201 package, same VBR but lower IPPM (65.8A), no AEC-Q101 or ISO 7637-2 validation | Requires PCB redesign; lacks automotive qualification and moisture sensitivity level 1 | Use only for legacy through-hole designs where surface-mount upgrade is not feasible |
Compared with SMAJ24A and 1.5KE24A, the 1K5SMPC24APH delivers 3.75× higher surge power handling, AEC-Q101 qualification, and TO-277A packaging optimized for automated SMT assembly - making it the sole choice for new automotive electronics requiring ISO 7637-2 Pulse 5a immunity.
Availability
1K5SMPC24APH is available at Aetrix Electronics and suitable for BLDC motor drives, battery management systems, automotive lighting control, and switching mode power supplies requiring stable component supply across automotive production lifecycles.
Supply support for 1K5SMPC24APH 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, specializing in high-reliability protection devices and power components.
The 1K5SMPCxxAPH series was developed specifically for automotive-grade transient suppression, targeting ISO 7637-2 compliance and AEC-Q101 qualification in compact surface-mount packages for next-generation electric vehicle subsystems.
FAQ
What is the maximum clamping voltage of the 1K5SMPC24APH at its rated peak pulse current?
The 1K5SMPC24APH has a maximum clamping voltage (VC) of 33.2V at its rated peak pulse current (IPPM) of 45.2A under 10/1000µs waveform conditions. This value is measured per JEDEC standards and guarantees that protected downstream components remain below their absolute maximum voltage ratings during surge events. The 1K5SMPC24APH maintains this clamping performance across its full operating temperature range of –55°C to +175°C.
Is the 1K5SMPC24APH qualified for automotive applications?
Yes, the 1K5SMPC24APH is AEC-Q101 qualified and validated for automotive use, meeting ISO 7637-2 Pulse 1/2a/2b/3a/3b and IEC 61000-4-2 Level 4 requirements. Its TO-277A package is rated MSL Level 1, eliminating bake requirements before reflow. These qualifications make the 1K5SMPC24APH suitable for under-hood and chassis-mounted applications where reliability under thermal cycling and mechanical vibration is critical.
What is the stand-off voltage (VWM) of the 1K5SMPC24APH and why does it matter?
The 1K5SMPC24APH has a stand-off voltage (VWM) of 20.5V, meaning it remains in high-impedance state with ≤1.0μA reverse leakage up to this voltage. This parameter ensures compatibility with 24V nominal automotive systems where normal operating voltage can reach 20–22V, preventing false triggering while allowing sufficient margin before breakdown. Exceeding VWM risks premature conduction and increased power loss in steady-state operation.
How does the thermal performance of the 1K5SMPC24APH support high-reliability designs?
The 1K5SMPC24APH features a junction-to-lead thermal resistance (RθJL) of 6.4°C/W, enabling efficient heat transfer from the silicon die to the PCB copper pad. When mounted on a 16mm × 16mm Cu pad per JEDEC standards, it sustains repeated 1500W surges without exceeding its +175°C maximum junction temperature. This thermal capability supports high-duty-cycle protection in BLDC motor drives and battery chargers where surge repetition is frequent.
What packaging and reel configuration is available for the 1K5SMPC24APH?
The 1K5SMPC24APH is supplied in TO-277A (SMPC4.6U) surface-mount package on tape-and-reel format, with 6,000 units per reel. The package features matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. This configuration supports high-speed pick-and-place assembly and meets IPC-A-610 Class 3 process requirements for automotive electronics manufacturing.
1K5SMPC24APH 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45.2A
- 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
1K5SMPC24APH FAQ
1.How can I place an order for 1K5SMPC24APH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1K5SMPC24APH 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 1K5SMPC24APH reliable?
The price and inventory of 1K5SMPC24APH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1K5SMPC24APH is usually 5 days.
3.What payment methods are accepted for 1K5SMPC24APH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1K5SMPC24APH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1K5SMPC24APH?
1K5SMPC24APH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1K5SMPC24APH 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 1K5SMPC24APH?
For technical support, including 1K5SMPC24APH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1K5SMPC24APH requirements.
6.How does Aetrix verify that 1K5SMPC24APH is sourced from the original manufacturer or authorized distributors?
All 1K5SMPC24APH 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 1K5SMPC24APH meets industry standards.
7.What is the process for return or replacement of 1K5SMPC24APH?
All 1K5SMPC24APH units undergo pre-shipment inspection (PSI). If there is an issue with 1K5SMPC24APH, 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 1K5SMPC24APH part is unused and in its original packaging.
Return procedure for 1K5SMPC24APH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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