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Microchip Technology MPLAD36KP43CA
- Part No.:
- MPLAD36KP43CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP43CA.pdf
- Description:
- TVS DIODE 43VWM 69.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,005
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Product details
Overview
MPLAD36KP43CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 43 V reverse standoff voltage (VWM), clamps to ≤69.4 V at 519 A peak pulse current (IPP), and operates across –55°C to +150°C junction temperature. It is certified for RTCA DO-160 Section 22 multi-stroke lightning protection and IEC 61000-4-5 Class 5 secondary lightning with 42 Ω source impedance.
For engineers reviewing the MPLAD36KP43CA datasheet, MPLAD36KP43CA pinout, MPLAD36KP43CA application, or MPLAD36KP43CA equivalent, this device is selected for high-reliability DC bus protection where low thermal resistance, bidirectional clamping, and compliance with aviation-grade surge standards are mandatory - especially in avionics power distribution units, engine control modules, and railway traction converters.
Technical Context
This TVS diode uses silicon avalanche technology with void-free thermosetting epoxy packaging to achieve ultra-low thermal resistance (RθJC = 1.0 °C/W) and stable clamping under repetitive transients. Its bidirectional construction enables symmetrical overvoltage suppression on AC-coupled or floating DC lines without polarity concerns.
It meets AEC-Q101 stress testing requirements and supports MIL-PRF-19500 upscreening options. Clamping response time is <5 ns, and it passes ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and pin-injection waveforms (RTCA/DO-160F Waveform 4 Level 4 and Waveform 5A Level 4) up to 43 V standoff.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains full-rated lightning surge energy without failure under defined duty cycle |
| Reverse Standoff Voltage (VWM) | 43 V - maximum continuous DC or peak AC voltage the device blocks before clamping begins |
| Breakdown Voltage (VBR) | 47.8–52.8 V @ 5 mA - ensures reliable avalanche initiation above operating voltage margin |
| Max Clamping Voltage (VC) | 69.4 V @ 519 A - limits downstream component stress during worst-case surge events |
| Thermal Resistance (RθJC) | 1.0 °C/W - enables efficient heat transfer to PCB copper pad or heatsink, critical for multi-stroke reliability |
| Junction Temperature Range | –55°C to +150°C - supports operation in extreme environments including engine bays and avionics bays |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack or baking required prior to reflow soldering |
Pinout & Package
Surface-mount PLAD package with metal base cathode (bidirectional symmetry eliminates anode/cathode distinction). Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ≈ 1.7–2.0 g. Mounting requires recommended FR4 pad layout (A = 11.94 mm, B = 5.85 mm) for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Anode-side marking) | AC input / Line 1 | Bidirectional conduction path - connects to protected line without polarity constraint |
| Terminal 2 (Cathode-side metal base) | AC input / Line 2 or Ground reference | Low-inductance thermal path - must be soldered to large copper pour for RθJC optimization |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of floating or AC-coupled buses without external polarity management |
| 1.0 °C/W junction-to-case thermal resistance | Supports >1000 surge cycles at 0.05% duty factor when mounted per spec, critical for DO-160 Section 22 compliance |
| RTCA DO-160F Waveform 4 Level 4 rating | Withstands 6.4/69 μs pin-injection surges up to 43 V VWM, validated for avionics data/power interconnects |
| AEC-Q101 qualified | Guarantees robustness against mechanical shock, temperature cycling, and humidity exposure in automotive ECUs |
| RoHS-compliant (e3) matte-tin plating | Ensures solderability per MIL-STD-750 Method 2026 and compatibility with lead-free reflow profiles |
Applications
| Avionics Power Distribution Unit (PDU) | Automotive Engine Control Module (ECM) |
|---|---|
Use Scenario: Protecting 28 V DC bus inputs against lightning-induced transients per RTCA DO-160 Section 22, Category A/B/C. IC Role / Device Role / Timing Role: Primary bidirectional TVS clamp placed at PDU input connector to limit surge voltage before upstream filters and DC-DC converters. Use Value: MPLAD36KP43CA clamps to ≤69.4 V at 519 A, ensuring downstream 100 V-rated MOSFETs and controllers remain within safe operating area during multi-stroke events. |
Use Scenario: Safeguarding 12 V battery-fed sensor and actuator interfaces from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary surge protector located at ECM main power entry, downstream of primary fuse but upstream of LDOs and microcontrollers. Use Value: Withstand 43 V standby and clamp below 70 V, preserving 5 V logic rails and preventing latch-up in CAN transceivers and analog front-ends. |
| Railway Traction Converter Interface | Industrial UPS DC Link Protection |
Use Scenario: Shielding gate driver power supplies in IGBT-based traction inverters from commutation-induced spikes and stray coupling. IC Role / Device Role / Timing Role: Bidirectional TVS placed across isolated DC/DC converter inputs feeding gate drivers, referenced to local ground plane. Use Value: Sub-5 ns response and 36 kW PPP capability suppress fast-rising transients (<100 ns rise time) without degrading PWM timing integrity. |
Use Scenario: Protecting 400 V DC link capacitors and inverter bridges in modular UPS systems from grid-switching transients and capacitor bank switching overshoot. IC Role / Device Role / Timing Role: High-power TVS mounted directly across DC link terminals, thermally coupled to chassis via metal base. Use Value: 1.0 °C/W RθJC allows sustained operation at elevated ambient temperatures (up to +85°C) while maintaining clamping stability over 1000+ surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ43CA | 600 W PPP rating, SMA package, RθJA = 50 °C/W - lacks multi-stroke DO-160 validation and thermal performance | Suitable only for consumer-grade single-event surge suppression, not aviation or automotive multi-stroke use | Select only for cost-sensitive, non-safety-critical 43 V circuits with low surge repetition rates |
| Vishay V260CH8 | 260 V VWM, 36 kW PPP, DO-160 compliant - mismatched voltage rating prevents direct substitution at 43 V system level | Designed for higher-voltage DC bus protection (e.g., 200–250 V telecom rectifiers), not 28/48 V systems | Consider only if redesigning system voltage architecture; not a drop-in replacement for MPLAD36KP43CA |
Compared with SMAJ43CA and V260CH8, the MPLAD36KP43CA uniquely combines 43 V standoff, 36 kW PPP, DO-160F Waveform 4 Level 4 certification, and 1.0 °C/W thermal resistance - making it irreplaceable for high-reliability 28 V avionics and automotive power entry protection where thermal cycling and multi-stroke endurance are design-critical.
Availability
MPLAD36KP43CA is available at Aetrix Electronics and suitable for avionics power distribution, automotive engine control, and industrial UPS systems requiring stable component supply with long-term lifecycle assurance and traceable sourcing.
Supply support for MPLAD36KP43CA 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and power solutions for aerospace, defense, and industrial markets.
The MPLAD36KP43CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for DO-160-compliant lightning protection in safety-critical platforms where thermal robustness and multi-event survivability are non-negotiable.
FAQ
What is the clamping voltage of MPLAD36KP43CA at its rated peak pulse current?
The MPLAD36KP43CA has a maximum clamping voltage (VC) of 69.4 V at 519 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and defines the upper voltage limit imposed on protected circuitry during a full-rated surge event. The MPLAD36KP43CA maintains this clamping performance across its operational temperature range when properly mounted.
Is MPLAD36KP43CA certified for RTCA DO-160 Section 22 lightning testing?
Yes, the MPLAD36KP43CA is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing in both short- and long-distance configurations. Per the datasheet, it achieves Level 4 for Waveform 4 (6.4/69 μs) and Level 4 for Waveform 5A (40/120 μs) at 43 V VWM. This certification applies to the exact MPLAD36KP43CA variant and is confirmed in Microsemi Application Note MicroNote 132.
Does MPLAD36KP43CA require special handling for moisture sensitivity?
No, the MPLAD36KP43CA is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions and does not require dry packing, baking, or floor-life tracking before reflow soldering. This simplifies manufacturing logistics and eliminates pre-reflow bake steps in high-volume SMT assembly of the MPLAD36KP43CA.
What is the thermal resistance from junction to case (RθJC) for MPLAD36KP43CA?
The MPLAD36KP43CA has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, measured with the metal base soldered to a specified FR4 pad layout. This ultra-low value enables effective heat dissipation during repetitive surge events and is essential for meeting DO-160 multi-stroke requirements. Achieving this RθJC requires adherence to the pad dimensions and copper pour guidelines in the RF01216 datasheet.
Can MPLAD36KP43CA be used in automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD36KP43CA is tested and qualified to AEC-Q101 standards for discrete semiconductors, covering stress tests including temperature cycling, humidity bias, mechanical shock, and ESD. This qualification confirms suitability for under-hood automotive applications such as engine control modules and battery management systems where the MPLAD36KP43CA provides robust transient protection on 12 V and 24 V power rails.
MPLAD36KP43CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP43CA FAQ
1.How can I place an order for MPLAD36KP43CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP43CA 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 reliable?
The price and inventory of MPLAD36KP43CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP43CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP43CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP43CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP43CA?
MPLAD36KP43CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP43CA 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?
For technical support, including MPLAD36KP43CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP43CA requirements.
6.How does Aetrix verify that MPLAD36KP43CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP43CA 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 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP43CA?
All MPLAD36KP43CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP43CA, 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 part is unused and in its original packaging.
Return procedure for MPLAD36KP43CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP43CA Tags
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