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Taiwan Semiconductor Corporation 1K5SMPC22APH
- Part No.:
- 1K5SMPC22APH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
1K5SMPC22APH.pdf
- Description:
- 1500W, 22V, 5%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,990
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Product details
Overview
1K5SMPC22APH 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), 22.0 V nominal breakdown voltage (VBR), and 30.6 V maximum clamping voltage (VC) at 49.0 A peak surge current - used for ESD and surge protection in automotive BLDC motor drives and battery management systems.
For engineers reviewing the 1K5SMPC22APH datasheet, 1K5SMPC22APH pinout, 1K5SMPC22APH application, or 1K5SMPC22APH equivalent, key selection criteria include unidirectional polarity, 18.8 V stand-off voltage (VWM), 1.0 µA max reverse leakage at VWM, -55°C to +175°C operating junction temperature, and compliance with ISO 10605 (L4), IEC 61000-4-2 (Level 4), and ISO 7637-2 (Pulse 1/2a/2b/3a/3b).
Technical Context
This TVS diode employs a silicon avalanche structure optimized for fast response (<1 ns) to transient overvoltages and robust energy absorption under repetitive surge stress. Its unidirectional configuration provides low-capacitance protection for DC-biased signal or power lines without forward conduction during normal operation.
Thermal design is supported by RθJL = 6.4°C/W (junction-to-lead) and RθJC = 8.9°C/W (junction-to-case), validated on a 16 mm × 16 mm Cu pad PCB per JESD51-14. It meets AEC-Q101 qualification and J-STD-020 moisture sensitivity level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 / 22.0 / 23.1 V - ensures reliable avalanche triggering above 18.8 V operating voltage while maintaining margin against false triggering. |
| VWM | 18.8 V - maximum continuous reverse working voltage; defines safe DC bias limit before leakage rises significantly. |
| VC @ IPPM | 30.6 V at 49.0 A - clamping voltage limits downstream IC stress during 10/1000 µs transients in automotive load-dump or inductive switching events. |
| PPPM | 1500 W - peak pulse power rating determines survivability of high-energy surges such as ISO 7637-2 Pulse 1 (inductive kickback) and Pulse 2b (battery disconnect). |
| IR @ VWM | ≤1.0 µA at 25°C - ultra-low leakage preserves efficiency in always-on battery-connected circuits like BMS monitoring paths. |
| TJ Range | -55°C to +175°C - enables deployment in under-hood automotive environments where ambient temperatures exceed 125°C. |
Pinout & Package
Package: TO-277A (SMPC4.6U), surface-mount, unidirectional, matte tin-plated leads, UL 94V-0 molding compound, 0.095 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 3) | Current entry terminal during clamping | Connected to protected line (e.g., motor phase or battery rail); must be routed with low-inductance trace for effective surge shunting. |
| Cathode 1 (Pin 1) | Common cathode connection | Internally tied to Cathode 2; serves as primary surge return path to ground or low-impedance reference plane. |
| Cathode 2 (Pin 2) | Redundant cathode terminal | Provides parallel current path to enhance thermal dissipation and reduce localized heating during multi-pulse events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias HAST, and mechanical shock - required for engine control and chassis modules. |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Guarantees immunity to real-world automotive transients including load dump (Pulse 5a not covered), enabling drop-in use in OEM power distribution designs. |
| IEC 61000-4-2 Level 4 & ISO 10605 Level L4 | Withstands ±15 kV air discharge and ±8 kV contact discharge - sufficient for infotainment, ADAS sensor, and body electronics ESD hardening. |
| RθJL = 6.4°C/W | Enables sustained surge handling without derating when mounted on standard 16 mm × 16 mm Cu pad - simplifies thermal layout for high-volume automotive PCBs. |
Applications
| BLDC Motor Drive Protection | Battery Management System (BMS) |
|---|---|
Use Scenario: Protecting gate drivers and current-sense amplifiers in 12–24 V BLDC inverters from inductive switching spikes and load dump. IC Role / Device Role: Unidirectional TVS placed across motor phase-to-ground or supply rail-to-ground to clamp transients below IC absolute maximum ratings. Use Value: Limits VC to 30.6 V during 49 A surges, preventing latch-up or oxide damage in 36 V-rated gate drivers and op-amps. | Use Scenario: Safeguarding cell voltage monitoring ICs and communication interfaces (e.g., CAN, UART) in 12 V lead-acid or 48 V Li-ion BMS modules. IC Role / Device Role: Standoff-clamp protection on analog front-end inputs and isolated data lines exposed to battery terminal transients. Use Value: 1.0 µA leakage at 18.8 V avoids measurement offset drift; 175°C TJ rating supports placement near hot battery cells. |
| Automotive Lighting Control | Switching Mode Power Supply (SMPS) |
Use Scenario: Suppressing turn-off spikes in LED driver MOSFETs and protecting microcontroller I/O pins in headlamp control units. IC Role / Device Role: Localized TVS at MOSFET drain and MCU reset line to absorb flyback energy and ESD from user interface buttons. Use Value: Fast <1 ns response time prevents logic upset; TO-277A footprint allows compact placement adjacent to sensitive nodes. | Use Scenario: Input-stage surge suppression in 12 V automotive DC/DC converters subjected to ISO 7637-2 Pulse 1 (−200 V, 50 Ω, 2 ms) and Pulse 2a (+100 V, 2 Ω, 50 ms). IC Role / Device Role: Primary transient clamp on main input rail before bulk capacitor and controller IC. Use Value: 1500 W PPPM sustains multiple Pulse 1 events without degradation; unidirectional polarity avoids forward conduction losses during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Lower PPPM (400 W), SMA package (higher RθJA), VC = 35.5 V @ 11.3 A | Not AEC-Q101 qualified; limited to non-automotive industrial or consumer SMPS | Select only if cost-sensitive, non-automotive, and surge energy is ≤400 W. |
| 1.5KE22A | Through-hole DO-201 package, PPPM = 1500 W, VC = 33.2 V @ 45.3 A, no AEC-Q101 or ISO 7637-2 validation | Requires PCB rework for SMT transition; unsuitable for vibration-prone automotive mounting | Use only for legacy through-hole designs where board space and reliability requirements are less stringent. |
Compared with SMAJ22A and 1.5KE22A, the 1K5SMPC22APH delivers automotive-grade qualification, lower clamping voltage (30.6 V vs. ≥33.2 V), and surface-mount compatibility - making it the sole option for new AEC-compliant BLDC or BMS designs requiring validated ISO 7637-2 immunity.
Availability
1K5SMPC22APH is available at Aetrix Electronics and suitable for automotive BLDC motor drives, battery management systems, lighting control units, and switching mode power supplies requiring stable component supply across extended temperature and high-reliability environments.
Supply support for 1K5SMPC22APH 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 rectifiers with global automotive and industrial certifications.
The 1K5SMPCxxAPH series was designed specifically for AEC-Q101-compliant transient suppression in harsh automotive environments - targeting high-energy surge immunity (ISO 7637-2), low-leakage precision clamping, and thermally robust SMT packaging.
FAQ
What is the maximum clamping voltage of the 1K5SMPC22APH at its rated peak pulse current?
The 1K5SMPC22APH has a maximum clamping voltage (VC) of 30.6 V at its rated peak pulse current (IPPM) of 49.0 A under the 10/1000 µs waveform. This value is measured per the test conditions defined in the official Taiwan Semiconductor datasheet and reflects worst-case voltage seen by downstream circuitry during standardized surge events. The 1K5SMPC22APH maintains this clamping performance across its full operating temperature range.
Is the 1K5SMPC22APH suitable for bidirectional transient protection?
No, the 1K5SMPC22APH is a unidirectional TVS diode and is not suitable for bidirectional protection. Its electrical characteristics - including polarity marking, VBR specification, and I-V curve - are defined only for reverse-biased operation. For AC-coupled or symmetrical transient environments, a dedicated bidirectional device such as the 1K5SMPC22CA must be selected. The 1K5SMPC22APH datasheet explicitly states "Polarity: Uni-directional".
Does the 1K5SMPC22APH meet AEC-Q101 stress test requirements?
Yes, the 1K5SMPC22APH is AEC-Q101 qualified. This certification covers stress tests including high-temperature operating life (HTOL), temperature cycling, highly accelerated stress test (HAST), and mechanical shock - all performed per the AEC-Q101-001 standard. The qualification applies to the exact 1K5SMPC22APH part number and is documented in Taiwan Semiconductor's official qualification report (Version B2109).
What is the recommended PCB pad layout for optimal thermal performance of the 1K5SMPC22APH?
Taiwan Semiconductor specifies a 16 mm × 16 mm copper pad for the 1K5SMPC22APH to achieve the published thermal resistance values (RθJL = 6.4°C/W). The pad must be solid, unbroken, and connected to internal ground planes via ≥4 thermal vias (0.3 mm diameter, spaced ≤2 mm apart). The 1K5SMPC22APH datasheet includes a suggested pad layout diagram in Package Outline Dimensions section, which must be followed to ensure reliable power derating and long-term surge endurance.
Can the 1K5SMPC22APH replace the 1K5SMPC20APH or 1K5SMPC24APH in an existing design?
The 1K5SMPC22APH is not a direct replacement for 1K5SMPC20APH or 1K5SMPC24APH due to differences in VBR (22.0 V vs. 20.0 V / 24.0 V) and VWM (18.8 V vs. 17.1 V / 20.5 V). Substitution requires verification that the protected circuit's operating voltage remains within the new device's 10% VWM margin and that clamping does not violate downstream IC absolute maximum ratings. The 1K5SMPC22APH datasheet lists each variant separately with distinct electrical tables - confirming non-interchangeability without system-level validation.
1K5SMPC22APH 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- 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
1K5SMPC22APH FAQ
1.How can I place an order for 1K5SMPC22APH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1K5SMPC22APH 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 1K5SMPC22APH reliable?
The price and inventory of 1K5SMPC22APH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1K5SMPC22APH is usually 5 days.
3.What payment methods are accepted for 1K5SMPC22APH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1K5SMPC22APH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1K5SMPC22APH?
1K5SMPC22APH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1K5SMPC22APH 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 1K5SMPC22APH?
For technical support, including 1K5SMPC22APH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1K5SMPC22APH requirements.
6.How does Aetrix verify that 1K5SMPC22APH is sourced from the original manufacturer or authorized distributors?
All 1K5SMPC22APH 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 1K5SMPC22APH meets industry standards.
7.What is the process for return or replacement of 1K5SMPC22APH?
All 1K5SMPC22APH units undergo pre-shipment inspection (PSI). If there is an issue with 1K5SMPC22APH, 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 1K5SMPC22APH part is unused and in its original packaging.
Return procedure for 1K5SMPC22APH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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