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Taiwan Semiconductor Corporation 1K5SMPC39APH
- Part No.:
- 1K5SMPC39APH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
1K5SMPC39APH.pdf
- Description:
- 1500W, 39V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,990
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Product details
Overview
1K5SMPC39APH 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), 39.0V nominal breakdown voltage (VBR), and 53.9V maximum clamping voltage (VC) at 27.8A peak pulse current - used for automotive-level surge protection in BLDC motor drives and battery management systems.
For engineers reviewing the 1K5SMPC39APH datasheet, 1K5SMPC39APH pinout, 1K5SMPC39APH application, or 1K5SMPC39APH equivalent, key selection criteria include unidirectional polarity, IEC 61000-4-2 Level 4 / ISO 10605 L4 ESD immunity, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, 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 with precise VBR = 37.1–41.0V (min–max at IT = 1.0mA) and VWM = 33.3V, enabling robust overvoltage protection without forward conduction during normal operation. Its 1500W non-repetitive peak pulse power rating supports high-energy transients per IEC/ISO standards.
Thermal performance is defined by RθJL = 6.4°C/W and RθJC = 8.9°C/W on a 16mm × 16mm Cu pad test board, with junction temperature range of –55°C to +175°C and moisture sensitivity level 1 per J-STD-020 - confirming suitability for reflow-soldered automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min–max) | 37.1–41.0V at IT = 1.0mA - defines precise clamping onset threshold under standardized test conditions |
| VWM | 33.3V - maximum continuous reverse working voltage before leakage exceeds 1.0μA |
| VC @ IPPM | 53.9V at 27.8A (10/1000µs) - limits downstream voltage during worst-case surge events |
| PPPM | 1500W - peak pulse power handling capacity per standard waveform, derated above 25°C |
| Polarity | Unidirectional - blocks reverse current only; requires correct anode/cathode orientation in circuit |
| RθJL | 6.4°C/W - enables efficient heat transfer from junction to lead, critical for sustained surge duty cycles |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
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 |
|---|---|---|
| Cathode 1 | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to shunt energy to ground |
| Cathode 2 | Reverse-biased terminal | Electrically tied to Cathode 1 internally; provides dual-cathode mechanical symmetry for layout |
| Anode 3 | Reference/ground terminal | Common return path for surge current; must be low-inductance connection to system ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTGB, H3TRB, and ESD |
| IEC 61000-4-2 Level 4 immunity | Withstands ±15kV contact / ±20kV air discharge ESD without degradation or latch-up |
| ISO 7637-2 Pulse compliance | Survives all five standardized automotive transients (Pulse 1, 2a, 2b, 3a, 3b) without failure |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally restricted substances |
| Junction temperature range | Operates continuously from –55°C to +175°C - supports under-hood and high-ambient industrial use |
Applications
| BLDC Motor Drive Protection | Battery Management System (BMS) |
|---|---|
Use Scenario: Suppresses inductive kickback and load dump transients in 12–48V BLDC motor gate drivers and power stages. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse voltage spikes across MOSFETs and gate drivers during commutation. Use Value: Prevents gate oxide damage and logic upset using 53.9V clamping at 27.8A, aligned with ISO 7637-2 Pulse 2b requirements. | Use Scenario: Protects cell monitoring ICs and communication interfaces in 12–48V lithium-ion BMS modules from ESD and coupling surges. IC Role / Device Role / Timing Role: Standoff voltage of 33.3V ensures no interference during normal battery voltage monitoring (e.g., 3.6V/cell × 12 cells = 43.2V max). Use Value: Clamps fast transients to ≤53.9V while maintaining <1.0μA leakage at 33.3V, preserving measurement accuracy and low-power sleep modes. |
| Automotive Lighting Control | Switching Mode Power Supply (SMPS) |
Use Scenario: Shields LED driver ICs and CAN/LIN transceivers in headlamp and tail lamp modules from load dump and jump-start surges. IC Role / Device Role / Timing Role: Placed at input stage to clamp ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 3b (capacitive coupling) events. Use Value: 1500W peak power rating absorbs full energy of 12V system load dump pulses without thermal runaway or parametric shift. | Use Scenario: Safeguards primary-side controllers and secondary-side rectifiers in 12–48V DC-DC converters against switching noise and cross-talk surges. IC Role / Device Role / Timing Role: Positioned across input rails to limit transient overvoltage before it reaches PWM controller or synchronous rectifier MOSFETs. Use Value: 6.4°C/W junction-to-lead thermal resistance allows reliable operation at 100% rated power with minimal PCB copper area (16mm × 16mm pad). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Lower PPPM = 400W; VBR = 40.0–44.4V; SMA package (higher RθJA = 110°C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 or load dump | Select only for cost-sensitive consumer-grade SMPS where 1500W surge immunity is not required |
| 1.5KE39A | Through-hole DO-201 package; PPPM = 1500W; VBR = 41.8–46.2V; no AEC-Q101 or ISO 7637-2 validation | Not qualified for automotive; lacks ESD/EMC certification and moisture sensitivity control | Acceptable for industrial non-automotive power supplies with manual assembly and no reflow constraints |
Compared with SMAJ36A and 1.5KE39A, the 1K5SMPC39APH delivers automotive-grade reliability via AEC-Q101, certified ISO/IEC immunity, and superior thermal performance in a surface-mount TO-277A package - making it the only option qualified for under-hood BLDC and BMS deployments requiring zero field failures.
Availability
1K5SMPC39APH 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, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for 1K5SMPC39APH 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, and automotive-qualified components.
The 1K5SMPCxxAPH series is designed specifically for high-reliability automotive and industrial transient suppression - delivering AEC-Q101-qualified, ISO/IEC-compliant TVS performance in compact surface-mount packages.
FAQ
What is the breakdown voltage tolerance for 1K5SMPC39APH?
The 1K5SMPC39APH has a specified breakdown voltage range of 37.1V to 41.0V at test current IT = 1.0mA, corresponding to ±5% nominal deviation around 39.0V. This tolerance is verified per JEDEC test methods and applies across the full operating temperature range of –55°C to +175°C, with temperature coefficient αT = 0.091%/°C factored into design margins.
Is 1K5SMPC39APH suitable for bidirectional transient protection?
No, the 1K5SMPC39APH is a unidirectional TVS diode and must be used with correct polarity - anode connected to ground, cathodes to protected line. For bidirectional protection, a separate symmetric device such as 1K5SMPC39CA would be required. Using 1K5SMPC39APH in reverse orientation risks permanent breakdown or failure during positive transients.
What is the maximum clamping voltage of 1K5SMPC39APH at rated surge current?
The 1K5SMPC39APH clamps to a maximum of 53.9V when subjected to its rated peak pulse current of 27.8A under the standard 10/1000µs waveform. This value is measured at TA = 25°C and is guaranteed per datasheet specifications - critical for ensuring downstream ICs remain within absolute maximum ratings during surge events.
Does 1K5SMPC39APH require derating at elevated ambient temperatures?
Yes, the 1K5SMPC39APH must be derated above TA = 25°C per Figure 1 in the datasheet. At 85°C ambient, its 1500W peak pulse power rating reduces to approximately 900W, and at 125°C, it drops to ~550W. Derating is based on junction temperature limits and thermal resistance values, and proper PCB copper area (16mm × 16mm) is required to maintain thermal performance.
Can 1K5SMPC39APH be used in lead-free reflow processes?
Yes, the 1K5SMPC39APH is qualified for lead-free reflow soldering per J-STD-020, with moisture sensitivity level (MSL) 1 - meaning it can be stored indefinitely at ≤30°C/60% RH without baking. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the UL 94V-0 molding compound withstands peak reflow temperatures up to 260°C.
1K5SMPC39APH 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 27.8A
- 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
1K5SMPC39APH FAQ
1.How can I place an order for 1K5SMPC39APH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1K5SMPC39APH 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 1K5SMPC39APH reliable?
The price and inventory of 1K5SMPC39APH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1K5SMPC39APH is usually 5 days.
3.What payment methods are accepted for 1K5SMPC39APH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1K5SMPC39APH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1K5SMPC39APH?
1K5SMPC39APH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1K5SMPC39APH 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 1K5SMPC39APH?
For technical support, including 1K5SMPC39APH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1K5SMPC39APH requirements.
6.How does Aetrix verify that 1K5SMPC39APH is sourced from the original manufacturer or authorized distributors?
All 1K5SMPC39APH 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 1K5SMPC39APH meets industry standards.
7.What is the process for return or replacement of 1K5SMPC39APH?
All 1K5SMPC39APH units undergo pre-shipment inspection (PSI). If there is an issue with 1K5SMPC39APH, 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 1K5SMPC39APH part is unused and in its original packaging.
Return procedure for 1K5SMPC39APH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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