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Taiwan Semiconductor Corporation 1K5SMPC20APH
- Part No.:
- 1K5SMPC20APH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
1K5SMPC20APH.pdf
- Description:
- 1500W, 20V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
1K5SMPC20APH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode rated for 1500 W peak pulse power, 20.0 V nominal breakdown voltage (VBR), and 27.7 V maximum clamping voltage (VC) at 54.2 A peak pulse current - designed for automotive-level surge protection in BLDC motor drives and battery management systems.
For engineers reviewing the 1K5SMPC20APH datasheet, 1K5SMPC20APH pinout, 1K5SMPC20APH application, or 1K5SMPC20APH equivalent, this device delivers AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and IEC 61000-4-2 Level 4 ESD robustness in a TO-277A (SMPC4.6U) package with verified thermal resistance (RθJL = 6.4 °C/W).
Technical Context
This TVS diode operates as a unidirectional clamping device with a 19.0–21.0 V VBR range at 1.0 mA test current and 17.1 V stand-off voltage (VWM). Its 1500 W PPPM rating applies to 10/1000 µs waveform per Fig.3, derated above 25 °C using thermal curves in Fig.1.
Thermal performance is characterized on a 16 mm × 16 mm Cu pad PCB: RθJA = 51.1 °C/W, RθJC = 8.9 °C/W, and RθJL = 6.4 °C/W. Junction temperature range is –55 °C to +175 °C, supporting under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V at 1.0 mA - defines precise clamping onset threshold for overvoltage events |
| VWM | 17.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 27.7 V at 54.2 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 1500 W - peak pulse power handling capability per IEC 61000-4-5 and ISO 7637-2 standards |
| Polarity | Unidirectional - protects against negative transients only; requires correct anode/cathode orientation |
| Package | TO-277A (SMPC4.6U) - surface-mount, low-profile (1.1 mm height), UL 94V-0 molded case |
| TJ max | +175 °C - enables operation in high-temperature automotive engine compartments |
Pinout & Package
Package: TO-277A (SMPC4.6U), 3-terminal surface-mount package with matte tin-plated leads, polarity-marked cathode band, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side transient sink | Connected to protected line (e.g., motor phase or battery rail); carries full surge current to ground |
| 2 (Cathode) | Parallel cathode terminal | Dual-cathode configuration reduces inductance and improves high-frequency surge response |
| 3 (Anode) | Reference/ground return | Low-inductance path to system ground; must be routed with minimal loop area for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, HAST, and UHST |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) |
| IEC 61000-4-2 Level 4 | Survives ±15 kV air discharge and ±8 kV contact discharge without parametric shift or failure |
| RθJL = 6.4 °C/W | Enables efficient heat transfer to PCB copper, supporting sustained surge duty cycles without thermal runaway |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing |
Applications
| BLDC Motor Drive Protection | Battery Management System (BMS) |
|---|---|
|
Use Scenario: Suppresses switching-induced voltage spikes across MOSFET half-bridges in 12–48 V automotive BLDC controllers. IC Role / Device Role / Timing Role: Clamps transient overvoltages faster than MOSFET body diodes, preventing gate oxide damage and shoot-through. Use Value: 27.7 V clamping at 54.2 A ensures gate drivers and MCU I/O remain within safe operating area during PWM commutation. |
Use Scenario: Protects cell monitoring ICs and communication lines from load-dump surges during 12 V auxiliary battery disconnect/reconnect events. IC Role / Device Role / Timing Role: Acts as primary front-end surge clamp on BMS input rails and CAN bus power lines. Use Value: AEC-Q101 qualification and ISO 7637-2 Pulse 1 compliance guarantee reliability in harsh vehicle electrical environments. |
| Automotive Lighting Control | On-Board Charger (OBC) Interface |
|
Use Scenario: Shields LED driver ICs and LIN bus transceivers from ignition noise and alternator ripple in headlamp modules. IC Role / Device Role / Timing Role: Unidirectional clamping on 12 V supply rail and LIN signal line (with series resistor). Use Value: 17.1 V VWM allows stable operation during cold-crank (down to ~6 V) while blocking >20 V transients. |
Use Scenario: Guards isolated DC-DC converter control signals and feedback paths in EV on-board chargers exposed to high-voltage battery transients. IC Role / Device Role / Timing Role: Surge suppression on auxiliary 12 V control rail feeding gate drivers and microcontrollers. Use Value: 1500 W PPPM rating handles repetitive load-dump energy without degradation, validated per ISO 7637-2 Pulse 2b. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | DO-214AC package; 20 V VBR, 32.4 V VC @ 46.3 A; lower PPPM (400 W) | Limited to non-automotive industrial SMPS; lacks AEC-Q101 and ISO 7637-2 validation | Select when cost sensitivity outweighs automotive qualification and higher surge margin |
| TPSMA6.8A-Q1 | Automotive-grade DO-214AC; 6.8 V VBR, 11.5 V VC @ 130 A; same AEC-Q101/ISO 7637-2 compliance | Designed for lower-voltage rails (e.g., MCU I/O); not suitable for 12–24 V power rail clamping | Choose only for sub-10 V protection; 1K5SMPC20APH remains optimal for 17–21 V stand-off applications |
Compared with SMAJ20A and TPSMA6.8A-Q1, the 1K5SMPC20APH uniquely combines 1500 W surge capacity, TO-277A low-inductance dual-cathode layout, and full automotive qualification - making it the only option among the three rated for direct placement on high-current motor phase lines per ISO 7637-2 Pulse 1.
Availability
1K5SMPC20APH is available at Aetrix Electronics and suitable for automotive BLDC motor drives, battery management systems, lighting control modules, and on-board charger interfaces requiring stable component supply and long-term lifecycle support.
Supply support for 1K5SMPC20APH 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 TVS diodes, rectifiers, and power MOSFETs for industrial and automotive markets.
The 1K5SMPCxxAPH series was developed specifically for AEC-Q101-compliant transient suppression in high-reliability 12–48 V automotive subsystems, emphasizing low clamping voltage, high surge current capability, and robust thermal performance in compact surface-mount packages.
FAQ
What is the exact breakdown voltage tolerance for 1K5SMPC20APH?
The 1K5SMPC20APH has a guaranteed breakdown voltage range of 19.0 V (min) to 21.0 V (max) at 1.0 mA test current, with 20.0 V as the nominal value. This ±5% tolerance is measured per JEDEC JESD201 and documented in the Electrical Characteristics table on page 2 of the official datasheet revision B2109. The 1K5SMPC20APH maintains this specification across its full operating temperature range of –55 °C to +175 °C.
Is 1K5SMPC20APH suitable for bidirectional transient suppression?
No, the 1K5SMPC20APH is a unidirectional TVS diode and only clamps negative-going transients relative to its anode. It cannot suppress positive transients on the cathode side. For bidirectional protection, a separate device such as a symmetric TVS array or back-to-back configuration would be required. The 1K5SMPC20APH datasheet explicitly states "Polarity: Uni-directional" in the Mechanical Data section.
What is the recommended PCB pad layout for 1K5SMPC20APH?
Taiwan Semiconductor specifies a 16 mm × 16 mm copper pad for optimal thermal performance, matching the test board used to characterize RθJA = 51.1 °C/W. The suggested pad layout is provided in the Package Outline Dimensions sheet (page 4, Version B2109), with defined solder mask openings and thermal relief patterns to ensure reliable reflow and mechanical anchoring. Use of this layout is critical to achieve rated 1500 W PPPM performance.
Does 1K5SMPC20APH meet ISO 16750-2 for automotive environmental testing?
The 1K5SMPC20APH is qualified to AEC-Q101 and meets ISO 7637-2 (Pulse 1/2a/2b/3a/3b) and ISO 10605 (ESD), but ISO 16750-2 compliance is not claimed in the datasheet or product documentation. ISO 16750-2 covers broader environmental stress categories (e.g., temperature cycling, humidity, vibration); qualification to that standard would require additional system-level testing beyond the component-level validations performed for 1K5SMPC20APH.
What is the maximum allowable mounting temperature during reflow for 1K5SMPC20APH?
The 1K5SMPC20APH is rated for moisture sensitivity level (MSL) 1 per J-STD-020, meaning it has unlimited floor life and may be subjected to standard lead-free reflow profiles without baking. Peak reflow temperature must not exceed 260 °C for ≤ 30 seconds, consistent with IPC/JEDEC J-STD-020D. The device's UL 94V-0 molding compound and matte tin plating are fully compatible with industry-standard Pb-free assembly processes.
1K5SMPC20APH 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 54.2A
- 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
1K5SMPC20APH FAQ
1.How can I place an order for 1K5SMPC20APH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1K5SMPC20APH 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 1K5SMPC20APH reliable?
The price and inventory of 1K5SMPC20APH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1K5SMPC20APH is usually 5 days.
3.What payment methods are accepted for 1K5SMPC20APH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1K5SMPC20APH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1K5SMPC20APH?
1K5SMPC20APH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1K5SMPC20APH 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 1K5SMPC20APH?
For technical support, including 1K5SMPC20APH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1K5SMPC20APH requirements.
6.How does Aetrix verify that 1K5SMPC20APH is sourced from the original manufacturer or authorized distributors?
All 1K5SMPC20APH 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 1K5SMPC20APH meets industry standards.
7.What is the process for return or replacement of 1K5SMPC20APH?
All 1K5SMPC20APH units undergo pre-shipment inspection (PSI). If there is an issue with 1K5SMPC20APH, 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 1K5SMPC20APH part is unused and in its original packaging.
Return procedure for 1K5SMPC20APH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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