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Microchip Technology MPLAD36KP43CA/TR
- Part No.:
- MPLAD36KP43CA/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP43CA/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:4,207
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Product details
Overview
MPLAD36KP43CA/TR from Microchip (formerly Microsemi) is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤69.4 V at 519 A, and features a 43 V working standoff voltage (VWM) with <5 ns response time. It is qualified to AEC-Q101 and meets RTCA DO-160G Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP43CA/TR datasheet, MPLAD36KP43CA/TR pinout, MPLAD36KP43CA/TR application, or MPLAD36KP43CA/TR equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin injection protection per DO-160G Waveform 4 (Level 4 & 5), and ESD/EFT suppression per IEC 61000-4-2/4-4 - all in a low-profile PLAD package with traceable lot screening and RoHS compliance.
Technical Context
This bidirectional TVS operates in avalanche breakdown mode with a specified breakdown voltage range of 47.8–52.8 V at 5 mA test current and exhibits a temperature coefficient of ±50 mV/°C. Its clamping behavior is characterized by a maximum clamping voltage of 69.4 V at 519 A (10/1000 μs), enabling robust overvoltage limiting during fast transients.
Thermal design is enabled by ultra-low junction-to-case thermal resistance (RθJC = 1.0 °C/W) and a metal-base cathode structure that facilitates direct heat sinking. The device maintains stable standby leakage (<10 µA at 43 V) and supports steady-state dissipation up to 504 W at 100 °C case temperature when properly mounted on FR4 with recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V DC working standoff voltage - sets maximum continuous operating rail voltage before conduction begins. |
| VBR @ IBR | 47.8–52.8 V at 5 mA - defines precise avalanche initiation threshold for predictable turn-on timing. |
| VC @ IPP | ≤69.4 V at 519 A (10/1000 μs) - ensures protected circuitry sees no more than 69.4 V during worst-case surge. |
| IPP | 519 A peak pulse current - quantifies maximum single-event surge energy absorption capability. |
| RθJC | 1.0 °C/W - enables direct thermal coupling to heatsink for sustained high-power surge handling without derating. |
| TJ/TSTG | –55 to +150 °C - supports operation in extreme environments including engine bays and avionics bays. |
| αV(BR) | ±50 mV/°C - allows accurate thermal drift modeling for precision clamp voltage prediction across temperature. |
Pinout & Package
The MPLAD36KP43CA/TR uses the PLAD surface-mount package: a low-profile, void-free thermosetting epoxy body (UL94V-0) with a metal base serving as the cathode terminal. The device has two terminals - anode and cathode - with polarity marked on the body and cathode located on the metal bottom surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface marking side) | Transient current entry point in bidirectional mode | Connects to protected line; conducts during both positive and negative surges relative to cathode reference. |
| Cathode (metal base) | Common reference and heat sink interface | Serves as primary thermal path to PCB copper pour or external heatsink; must be soldered to large copper area per Figure 7 pad layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Protects AC-coupled or floating lines against polarity-agnostic transients without requiring dual-device placement. |
| 36 kW peak pulse power rating | Enables single-device protection against severe lightning-induced surges per DO-160G Section 22 and IEC 61000-4-5 Class 4/5. |
| AEC-Q101 qualification & 3σ lot norm screening | Guarantees automotive-grade reliability with statistical control on standby leakage (ID) and full surge testing per lot. |
| Moisture sensitivity Level 1 (J-STD-020D.1) | Eliminates dry-pack requirement and floor-life constraints - simplifies SMT assembly and inventory management. |
| Traceable wafer and assembly lots | Supports full supply chain auditability for aerospace and defense programs requiring component pedigree documentation. |
Applications
| Aerospace Avionics Power Bus Protection | Automotive 12 V/24 V Load Dump Suppression |
|---|---|
Use Scenario: Protecting ARINC 429 data buses and flight control sensor power rails from induced lightning transients in aircraft fuselage. IC Role / Device Role / Timing Role: Bidirectional TVS placed at board-level entry points to clamp common-mode surges before they reach LDOs and ADC front-ends. Use Value: Meets RTCA DO-160G Section 22 Waveform 4 (6.4/69 μs) Level 4/5 and Waveform 5A (40/120 μs) Level 4 - verified for multi-stroke survivability. |
Use Scenario: Safeguarding infotainment ECUs and ADAS domain controllers during alternator load dump events in 12 V/24 V vehicle architectures. IC Role / Device Role / Timing Role: Primary surge limiter on battery input rail, positioned upstream of DC-DC converters and PMICs. Use Value: Clamps 12 V system transients to ≤69.4 V within <5 ns, preventing latch-up or gate oxide damage in downstream MOSFETs and regulators. |
| Industrial Motor Drive DC Link Protection | Renewable Energy Inverter DC Input Stage |
Use Scenario: Shielding variable-frequency drive (VFD) control boards from switching-induced transients generated by IGBT commutation. IC Role / Device Role / Timing Role: Transient absorber across DC bus rails to suppress dV/dt spikes coupled into logic supply domains. Use Value: Withstands repetitive 519 A surges at 0.05% duty factor while maintaining <10 µA leakage at 43 V - ensuring minimal standby power loss. |
Use Scenario: Securing solar string inverters' DC input against grid-switching transients and nearby lightning strikes. IC Role / Device Role / Timing Role: Secondary protection stage after MOV-based primary clamping, providing precise voltage limiting and fast response. Use Value: Enables IEC 61000-4-5 Class 4 compliance (42 Ω source) with 519 A peak current handling - critical for UL 1741 SA certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Lower peak power (600 W vs. 36,000 W); SMB package; RθJC = 15 °C/W | Suitable only for low-energy ESD/EFT; cannot meet DO-160G Section 22 or IEC 61000-4-5 Class 4/5 | Select SMBJ43CA only for cost-sensitive consumer electronics where surge energy is <10 J. |
| SMCJ43CA | Medium power (1500 W); SMC package; RθJC = 3.5 °C/W; same VWM/VC specs | Valid for IEC 61000-4-5 Class 2/3 (42 Ω), but fails Class 4/5 and DO-160G Waveform 4 Level 4/5 | Choose SMCJ43CA for industrial PLC I/O modules needing moderate surge margin without metal-base thermal path. |
Compared with SMBJ43CA and SMCJ43CA, the MPLAD36KP43CA/TR delivers 60× and 24× higher peak pulse power respectively, enables direct metal-base heatsinking for thermal stability under repeated surges, and is the only option validated for aviation-grade multi-stroke lightning standards - making it irreplaceable in safety-critical aerospace and high-reliability automotive systems.
Availability
MPLAD36KP43CA/TR is available at Aetrix Electronics and suitable for aerospace avionics, automotive ADAS ECUs, industrial motor drives, and renewable energy inverters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MPLAD36KP43CA/TR 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
Microchip Technology Inc. (NASDAQ: MCHP) is a global semiconductor company formed through the acquisition of Microsemi, offering high-reliability analog, mixed-signal, and power management solutions for aerospace, defense, and industrial markets.
The MPLAD36KP43CA/TR belongs to Microchip's high-power PLAD-series TVS family, engineered specifically for mission-critical surge protection in environments where multi-stroke lightning, load dump, and EFT events demand guaranteed clamping performance and thermal resilience.
FAQ
What is the clamping voltage of MPLAD36KP43CA/TR at its rated peak pulse current?
The MPLAD36KP43CA/TR has a maximum clamping voltage (VC) of 69.4 V when subjected to its rated peak pulse current of 519 A under the 10/1000 μs waveform. This value is measured across the device terminals during standardized surge testing and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The clamping performance is guaranteed across the full operating temperature range and is integral to meeting IEC 61000-4-5 and DO-160G compliance requirements for the MPLAD36KP43CA/TR.
Is MPLAD36KP43CA/TR suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD36KP43CA/TR is explicitly AEC-Q101 qualified, confirming its suitability for automotive electronic control units including engine management, ADAS, and infotainment systems. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and surge endurance - all performed on production lots. The MPLAD36KP43CA/TR also undergoes 3σ lot norm screening on standby current (ID) and full-surge testing per lot, satisfying OEM requirements for zero-defect reliability in automotive deployments.
How does the PLAD package of MPLAD36KP43CA/TR improve thermal performance compared to standard SMC or SMB packages?
The PLAD package of MPLAD36KP43CA/TR integrates a metal base that serves as both the cathode terminal and primary thermal conduction path, achieving a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W - over 14× lower than SMC (3.5 °C/W) and 15× lower than SMB (15 °C/W). This enables direct mounting to heatsinks or large PCB copper pours, allowing the MPLAD36KP43CA/TR to sustain repeated 36 kW surges without thermal runaway. Standard packages rely on PCB traces for heat dissipation, limiting their usable surge duty cycle - a limitation eliminated by the MPLAD36KP43CA/TR's metal-base architecture.
Can MPLAD36KP43CA/TR be used for IEC 61000-4-5 Class 5 lightning surge protection?
Yes, the MPLAD36KP43CA/TR is certified for IEC 61000-4-5 Class 5 secondary lightning protection when tested with 42 Ω source impedance and short-distance coupling - supporting up to 400 V VWM devices. For the MPLAD36KP43CA/TR specifically (43 V VWM), Class 5 compliance is confirmed per the manufacturer's application guidance in Section 1.2 of the datasheet. Its 519 A peak current rating and sub-5 ns response ensure reliable clamping under the 1.2/50 μs open-circuit voltage and 8/20 μs short-circuit current waveforms defined in Class 5 testing.
What is the meaning of the "TR" suffix in MPLAD36KP43CA/TR?
The "TR" suffix in MPLAD36KP43CA/TR indicates tape-and-reel packaging per EIA-481-B standard, enabling automated pick-and-place assembly. This packaging format includes carrier tape, cover tape, and reel - optimized for high-volume SMT production. The "TR" variant retains identical electrical, thermal, and reliability specifications as the bulk version; only the delivery format differs. Aetrix Electronics supplies MPLAD36KP43CA/TR exclusively in TR packaging to support seamless integration into contract manufacturing workflows.
MPLAD36KP43CA/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 519A
- Power - Peak Pulse:
- 36000W (36kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP43CA/TR FAQ
1.How can I place an order for MPLAD36KP43CA/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP43CA/TR 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 MPLAD36KP43CA/TR reliable?
The price and inventory of MPLAD36KP43CA/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP43CA/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP43CA/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP43CA/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP43CA/TR?
MPLAD36KP43CA/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP43CA/TR 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 MPLAD36KP43CA/TR?
For technical support, including MPLAD36KP43CA/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP43CA/TR requirements.
6.How does Aetrix verify that MPLAD36KP43CA/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP43CA/TR 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 MPLAD36KP43CA/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP43CA/TR?
All MPLAD36KP43CA/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP43CA/TR, 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 MPLAD36KP43CA/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP43CA/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP43CA/TR Tags
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