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Taiwan Semiconductor Corporation 1K5SMPC47APH
- Part No.:
- 1K5SMPC47APH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
1K5SMPC47APH.pdf
- Description:
- 1500W, 47V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,990
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Product details
Overview
1K5SMPC47APH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in TO-277A (SMPC4.6U) package, rated for 1500 W peak pulse power (10/1000 µs), 47.0 V nominal breakdown voltage (VBR), and 64.8 V maximum clamping voltage (VC) at 23.1 A peak pulse current - deployed in automotive battery management systems and BLDC motor control circuits.
For engineers reviewing the 1K5SMPC47APH datasheet, 1K5SMPC47APH pinout, 1K5SMPC47APH application, or 1K5SMPC47APH equivalent, key selection criteria include unidirectional polarity, IEC 61000-4-2 Level 4 ESD immunity, ISO 7637-2 pulse compliance, 175 °C max junction temperature, and TO-277A thermal performance (RθJL = 6.4 °C/W).
Technical Context
This TVS diode operates as a unidirectional overvoltage protection device with a defined breakdown threshold of 44.7–49.4 V and clamps transients to ≤64.8 V at 23.1 A. It meets AEC-Q101 stress requirements and supports automotive-grade reliability under ISO 7637-2 Pulse 1/2a/2b/3a/3b waveforms.
Thermal design is enabled by its low junction-to-lead resistance (6.4 °C/W) and UL 94V-0 molding compound. The device exhibits a typical VBR temperature coefficient of 0.092 %/°C, enabling predictable voltage shift across –55 °C to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 44.7 / 47.0 / 49.4 V - defines precise overvoltage triggering window for robust system-level surge margin |
| VWM | 40.2 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamping voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 1500 W - non-repetitive peak pulse power handling per IEC 61000-4-5 waveform |
| TJ max | +175 °C - enables operation in under-hood automotive environments without derating |
| Polarity | Unidirectional - protects against negative-going transients only; requires correct anode/cathode orientation |
| RθJL | 6.4 °C/W - low thermal resistance to PCB copper pad, critical for sustained surge duty cycles |
Pinout & Package
Package: TO-277A (SMPC4.6U), surface-mount, unidirectional, matte tin-plated leads, UL 94V-0 molding compound, 0.095 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Current entry terminal during forward conduction | Connected to protected circuit ground or low-side return path; determines polarity orientation |
| Cathode 1 (Pin 1) | Primary cathode connection | Connected to supply rail or signal line requiring clamping; forms main surge path |
| Cathode 2 (Pin 2) | Secondary cathode connection | Internally tied to Cathode 1; provides mechanical stability and enhanced thermal conduction to PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use with extended temperature cycling, humidity, and mechanical shock testing |
| IEC 61000-4-2 Level 4 & ISO 10605 L4 compliant | Withstands ±15 kV air discharge and ±8 kV contact discharge without degradation |
| ISO 7637-2 Pulse 1/2a/2b/3a/3b compliant | Protects against load dump, inductive switching, and battery disconnect transients in 12 V vehicle networks |
| TO-277A thermal performance | RθJL = 6.4 °C/W enables >1500 W surge dissipation on standard 16 mm × 16 mm Cu pad |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Battery Management System (BMS) | BLDC Motor Control |
|---|---|
Use Scenario: Protection of cell monitoring ICs and CAN bus interfaces against load dump and jump-start surges in 48 V mild-hybrid BMS modules. IC Role / Device Role: Unidirectional TVS clamp placed between battery rail and monitoring IC input pins. Use Value: Limits transient voltage to ≤64.8 V while sustaining 1500 W pulses, preventing latch-up or damage to precision analog front-ends. | Use Scenario: Guarding gate drivers and position sensors in automotive HVAC or EPS BLDC inverters exposed to inductive kickback. IC Role / Device Role: Rail-to-rail clamping device across DC bus and phase outputs. Use Value: Clamps fast-rising spikes (<10 ns rise time) to safe levels using low RθJL and stable VBR over temperature. |
| Automotive Lighting | Switching Mode Power Supply (SMPS) |
Use Scenario: Surge suppression on LED driver inputs subjected to ISO 7637-2 Pulse 2b (battery disconnect) in headlamp modules. IC Role / Device Role: Primary overvoltage protection element upstream of buck controller IC. Use Value: Maintains VWM = 40.2 V standoff while delivering 64.8 V clamping - compatible with 48 V architecture lighting systems. | Use Scenario: Input-stage transient protection in industrial 48 V telecom SMPS units experiencing lightning-induced surges. IC Role / Device Role: Front-end TVS on bulk capacitor input rail. Use Value: Handles 23.1 A peak surge current with <0.1 µs response time, preserving upstream fuse and rectifier integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A | DO-214AC package; lower PPPM = 400 W; VC = 77.4 V at 5.2 A | Limited to lower-energy surges; unsuitable for ISO 7637-2 Pulse 5a (load dump) | Select only for cost-sensitive, non-automotive 48 V rails with verified <400 W threat profile |
| TPSMD48 | TO-277A package; AEC-Q101 qualified; PPPM = 1500 W; VC = 77.0 V at 22.1 A | Higher clamping voltage reduces system margin; same footprint but different VBR tolerance (45.6–50.4 V) | Acceptable where 77.0 V clamping is within downstream IC absolute max ratings |
Compared with SMAJ48A and TPSMD48, the 1K5SMPC47APH delivers tighter VBR tolerance (±1 V), lower clamping voltage (64.8 V), and superior thermal resistance (6.4 °C/W), making it optimal for high-reliability 48 V automotive nodes demanding minimal voltage overshoot and repeatable surge endurance.
Availability
1K5SMPC47APH is available at Aetrix Electronics and suitable for battery management systems, BLDC motor control, automotive lighting, and switching mode power supply designs requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for 1K5SMPC47APH 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 Company (TSC) is a vertically integrated Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers for automotive and industrial markets.
The 1K5SMPCxxAPH series was developed specifically for AEC-Q101-compliant, high-power transient suppression in 12–51 V automotive electrical architectures, emphasizing low clamping voltage, tight VBR tolerance, and robust thermal performance in TO-277A.
FAQ
What is the breakdown voltage range for 1K5SMPC47APH?
The 1K5SMPC47APH has a guaranteed breakdown voltage (VBR) range of 44.7 V (min) to 49.4 V (max) at 1.0 mA test current, with a nominal value of 47.0 V. This tight ±1 V tolerance ensures consistent clamping behavior across production lots and temperature extremes, critical for protecting sensitive 48 V automotive electronics.
Is 1K5SMPC47APH suitable for automotive applications?
Yes, 1K5SMPC47APH is AEC-Q101 qualified and certified for automotive use. It meets ISO 7637-2 Pulse 1/2a/2b/3a/3b and IEC 61000-4-2 Level 4, making it appropriate for battery management, BLDC motor drives, and lighting systems in passenger vehicles and commercial EVs.
What is the maximum clamping voltage of 1K5SMPC47APH at rated surge current?
The 1K5SMPC47APH clamps to a maximum of 64.8 V at its rated peak pulse current of 23.1 A (10/1000 µs waveform). This low clamping voltage preserves margin for downstream components rated to 65 V or higher, such as CAN transceivers and microcontrollers in 48 V domains.
Does 1K5SMPC47APH have unidirectional or bidirectional polarity?
The 1K5SMPC47APH is a unidirectional TVS diode, meaning it conducts only during reverse-biased overvoltage events. Its polarity must be observed during PCB layout: Anode (Pin 3) connects to ground or low-side reference, and Cathodes (Pins 1 & 2) connect to the protected line.
What package type does 1K5SMPC47APH use, and what are its thermal characteristics?
1K5SMPC47APH uses the TO-277A (SMPC4.6U) surface-mount package. Its thermal performance includes RθJL = 6.4 °C/W (junction-to-lead), RθJC = 8.9 °C/W (junction-to-case), and RθJA = 51.1 °C/W (junction-to-ambient on 16 mm × 16 mm Cu pad), enabling efficient heat transfer in high-power surge scenarios.
1K5SMPC47APH 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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
1K5SMPC47APH FAQ
1.How can I place an order for 1K5SMPC47APH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1K5SMPC47APH 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 1K5SMPC47APH reliable?
The price and inventory of 1K5SMPC47APH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1K5SMPC47APH is usually 5 days.
3.What payment methods are accepted for 1K5SMPC47APH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1K5SMPC47APH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1K5SMPC47APH?
1K5SMPC47APH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1K5SMPC47APH 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 1K5SMPC47APH?
For technical support, including 1K5SMPC47APH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1K5SMPC47APH requirements.
6.How does Aetrix verify that 1K5SMPC47APH is sourced from the original manufacturer or authorized distributors?
All 1K5SMPC47APH 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 1K5SMPC47APH meets industry standards.
7.What is the process for return or replacement of 1K5SMPC47APH?
All 1K5SMPC47APH units undergo pre-shipment inspection (PSI). If there is an issue with 1K5SMPC47APH, 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 1K5SMPC47APH part is unused and in its original packaging.
Return procedure for 1K5SMPC47APH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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