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Taiwan Semiconductor Corporation 1K5SMPC27APH
- Part No.:
- 1K5SMPC27APH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
1K5SMPC27APH.pdf
- Description:
- 1500W, 27V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
1K5SMPC27APH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in TO-277A (SMPC4.6U) package, rated for 1500W peak pulse power (10/1000µs), 27.0V nominal breakdown voltage (VBR), and 37.5V maximum clamping voltage (VC) at 40.0A peak pulse current - deployed in automotive BLDC motor control and battery management systems.
For engineers reviewing the 1K5SMPC27APH datasheet, 1K5SMPC27APH pinout, 1K5SMPC27APH application, or 1K5SMPC27APH equivalent, key selection criteria include unidirectional polarity, IEC 61000-4-2 Level 4/ISO 10605 L4 ESD robustness, ISO 7637-2 Pulse 1/2a/2b/3a/3b surge immunity, AEC-Q101 qualification, and thermal resistance RθJL = 6.4°C/W for PCB-mounted reliability.
Technical Context
This TVS diode operates as a unidirectional clamping device protecting sensitive downstream circuitry from fast transient overvoltages. Its 27.0V VBR (min 25.7V, max 28.4V at 1.0mA) and 23.1V stand-off voltage (VWM) define its operating window before conduction begins.
It delivers 1500W non-repetitive peak pulse power per 10/1000µs waveform, with 37.5V clamping voltage at 40.0A IPPM and junction temperature range of –55°C to +175°C - enabling use in harsh automotive environments where thermal stability and surge margin are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 27.0 V - precise breakdown threshold at 1.0 mA test current, ensuring predictable turn-on during transients |
| VWM | 23.1 V - maximum continuous reverse working voltage without significant leakage (≤1.0 µA) |
| VC @ IPPM | 37.5 V - clamped voltage at 40.0 A peak pulse, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling capability per 10/1000 µs waveform, critical for ISO 7637-2 compliance |
| RθJL | 6.4 °C/W - low junction-to-lead thermal resistance enables efficient heat transfer to PCB copper pad |
| TJ Range | –55°C to +175°C - full automotive-grade junction temperature operation without derating |
| Polarity | Unidirectional - blocks reverse voltage only; used where DC bias polarity is fixed and known |
Pinout & Package
Package: TO-277A (SMPC4.6U), surface-mount, unidirectional, matte tin-plated leads, UL 94V-0 molding compound, 0.095g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Current entry point during forward conduction | Connected to system ground or low-side reference; defines cathode-anode orientation for unidirectional clamping |
| Cathode 1 (Pin 1) | High-voltage transient input node | Connected to protected line (e.g., motor phase, battery rail); carries full surge current during clamping |
| Cathode 2 (Pin 2) | Second cathode terminal, electrically tied to Cathode 1 | Provides dual-pad mechanical stability and enhanced current sharing; not isolated - same potential as Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics under stress conditions including temperature cycling, HTRB, and ESD - required for under-hood deployment |
| IEC 61000-4-2 Level 4 / ISO 10605 L4 compliance | Withstands ±15 kV air discharge and ±8 kV contact discharge without degradation - meets OEM ESD immunity requirements |
| ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity | Clamps induced load-dump and inductive switching transients in 12V/24V vehicle networks without failure |
| Moisture sensitivity level 1 (J-STD-020) | No floor-life limitation or baking requirement before reflow - simplifies SMT manufacturing flow |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 halogen-free standard and EU RoHS Directive - supports green manufacturing and end-of-life recycling |
Applications
| BLDC Motor Phase Protection | Battery Management System (BMS) Input |
|---|---|
Use Scenario: Installed across motor phase-to-ground in 3-phase inverter drives to suppress commutation spikes and back-EMF surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device absorbing up to 1500W transient energy within microseconds. Use Value: Prevents gate driver IC damage and MOSFET avalanche failure by limiting phase voltage to ≤37.5V during 40A transients. | Use Scenario: Placed at main battery input of BMS module to protect monitoring ICs and communication interfaces from load dump and jump-start events. IC Role / Device Role / Timing Role: Primary overvoltage clamp with 23.1V stand-off and 37.5V clamping, responding in <1 ns. Use Value: Maintains functional safety integrity by preventing false shutdown or ADC saturation during ISO 7637-2 Pulse 5a (load dump). |
| Automotive Lighting Driver | 12V Power Rail Surge Suppression |
Use Scenario: Mounted on LED headlamp driver board to absorb inductive kickback from relay or solenoid control lines. IC Role / Device Role / Timing Role: Fast-response unidirectional transient suppressor with 0.087%/°C VBR tempco for stable performance across –40°C to +125°C ambient. Use Value: Eliminates flicker and premature LED driver failure caused by repetitive 100V+ transients in headlamp harnesses. | Use Scenario: Integrated into infotainment or ADAS ECU 12V input stage to guard against alternator ripple, ignition noise, and coupling from adjacent high-current circuits. IC Role / Device Role / Timing Role: Standoff-rated TVS providing 23.1V DC blocking and sub-37.5V clamping during 10/1000µs surges. Use Value: Enables uninterrupted operation of microcontrollers and CAN transceivers during engine cranking and cold-cranking events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A | DO-214AC package; lower PPPM = 400W; VBR = 31.1–34.4V; higher VC = 45.4V at 8.8A | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current motor phases | Select only for cost-sensitive, non-automotive 12V systems with <500W surge exposure |
| 1.5KE27A | DO-201AD axial leaded package; PPPM = 1500W; VBR = 28.5–31.5V; VC = 43.0V at 35A; no AEC-Q101 or ISO 7637-2 validation | Not qualified for automotive use; requires through-hole assembly; higher thermal resistance limits PCB power density | Acceptable only for industrial SMPS where AEC-Q101 and surface-mount are not required |
Compared with SMAJ28A and 1.5KE27A, the 1K5SMPC27APH offers superior automotive readiness via AEC-Q101, validated ISO 7637-2 immunity, TO-277A's low RθJL, and tighter VBR tolerance - making it the sole choice for space-constrained, high-reliability vehicle subsystems.
Availability
1K5SMPC27APH is available at Aetrix Electronics and suitable for automotive BLDC motor control, battery management systems, lighting drivers, and 12V power rail protection requiring stable component supply across production lifecycles.
Supply support for 1K5SMPC27APH 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 global automotive, industrial, and consumer markets since 1979.
The 1K5SMPCxxAPH series was designed specifically for AEC-Q101-compliant, high-power transient suppression in automotive power electronics - emphasizing low clamping voltage, tight VBR distribution, and robust thermal performance in surface-mount form.
FAQ
What is the exact breakdown voltage range for 1K5SMPC27APH?
The 1K5SMPC27APH has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1.0 mA test current, with a nominal value of 27.0 V. This specification is measured per JESD201 and verified across production lots. The 1K5SMPC27APH's tight 2.7 V spread ensures consistent clamping behavior in automotive systems where voltage margins are constrained.
Is 1K5SMPC27APH qualified for automotive use?
Yes, the 1K5SMPC27APH is AEC-Q101 qualified and tested for automotive-grade reliability, including temperature cycling, highly accelerated life testing (HALT), and ESD per JESD22-A114. It also meets ISO 7637-2 Pulse 1/2a/2b/3a/3b and IEC 61000-4-2 Level 4 - making the 1K5SMPC27APH suitable for under-hood and body-control module applications.
What is the clamping voltage of 1K5SMPC27APH at its rated peak pulse current?
The 1K5SMPC27APH clamps to a maximum of 37.5 V at its rated peak pulse current (IPPM) of 40.0 A using the 10/1000 µs waveform. This value is measured per JEDEC standards and reflects worst-case performance at TA = 25°C. The 1K5SMPC27APH's low VC minimizes stress on downstream components such as gate drivers and microcontrollers.
Does 1K5SMPC27APH have moisture sensitivity level (MSL) restrictions?
No, the 1K5SMPC27APH is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and does not require dry-packaging or baking prior to reflow soldering. This eliminates handling overhead in SMT lines and supports just-in-time manufacturing - a key advantage of the 1K5SMPC27APH in high-volume automotive PCB assembly.
What is the thermal resistance from junction to lead (RθJL) for 1K5SMPC27APH?
The 1K5SMPC27APH has a typical junction-to-lead thermal resistance (RθJL) of 6.4 °C/W when mounted on a 16 mm × 16 mm copper pad per JEDEC 51-14. This low value enables effective heat dissipation directly into the PCB, allowing the 1K5SMPC27APH to sustain repeated transient events without thermal runaway in compact automotive modules.
1K5SMPC27APH 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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 40A
- 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
1K5SMPC27APH FAQ
1.How can I place an order for 1K5SMPC27APH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1K5SMPC27APH 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 1K5SMPC27APH reliable?
The price and inventory of 1K5SMPC27APH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1K5SMPC27APH is usually 5 days.
3.What payment methods are accepted for 1K5SMPC27APH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1K5SMPC27APH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1K5SMPC27APH?
1K5SMPC27APH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1K5SMPC27APH 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 1K5SMPC27APH?
For technical support, including 1K5SMPC27APH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1K5SMPC27APH requirements.
6.How does Aetrix verify that 1K5SMPC27APH is sourced from the original manufacturer or authorized distributors?
All 1K5SMPC27APH 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 1K5SMPC27APH meets industry standards.
7.What is the process for return or replacement of 1K5SMPC27APH?
All 1K5SMPC27APH units undergo pre-shipment inspection (PSI). If there is an issue with 1K5SMPC27APH, 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 1K5SMPC27APH part is unused and in its original packaging.
Return procedure for 1K5SMPC27APH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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