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Microchip Technology MPLAD36KP400CAE3/TR
- Part No.:
- MPLAD36KP400CAE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP400CAE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:2,735
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Product details
Overview
MPLAD36KP400CAE3/TR from Microsemi (now Microchip) is a bidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 400 V working standoff voltage (VWM), 444–492 V breakdown voltage (VBR), and 644 V clamping voltage (VC) at 56 A peak impulse current. It delivers lightning and load-dump protection in aerospace avionics meeting RTCA DO-160 Section 22.
For engineers reviewing the MPLAD36KP400CAE3/TR datasheet, MPLAD36KP400CAE3/TR pinout, MPLAD36KP400CAE3/TR application, or MPLAD36KP400CAE3/TR equivalent, key selection criteria include bidirectional polarity, IEC 61000-4-5 Class 5 compliance (42 Ω source), RTCA/DO-160G Waveform 4 Level 4 capability, AEC-Q101 qualification, and thermal resistance of 1.0 °C/W junction-to-case.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transients above its VWM threshold, with sub-5 ns response time for bidirectional variants. Its low RθJC = 1.0 °C/W enables high-power dissipation when mounted on heatsink-equipped PCBs, supporting multi-stroke lightning immunity per DO-160G.
It meets IEC 61000-4-2 ESD (±30 kV air/±30 kV contact), IEC 61000-4-4 EFT (40 A), and IEC 61000-4-5 surge (4 kV/2 kV line-earth) standards. The PLAD package features a metal base acting as cathode terminal, enabling direct thermal coupling to PCB copper planes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W at 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Working Standoff Voltage (VWM) | 400 V DC - blocks normal system operating voltage while remaining non-conductive |
| Clamping Voltage (VC) | 644 V at IPP = 56 A - limits downstream circuit stress during worst-case surge |
| Breakdown Voltage (VBR) | 444–492 V at IBR = 5 mA - defines precise turn-on threshold for reliable triggering |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or copper pour for repeated surge handling |
| Surge Current (IPP) | 56 A at 10/1000 μs - quantifies maximum single-event current it can shunt safely |
| Temperature Coefficient (αV(BR)) | 493 mV/°C - ensures predictable VBR drift over –55°C to +150°C operating range |
Pinout & Package
The MPLAD36KP400CAE3/TR uses the PLAD surface-mount package: a low-profile, void-free thermosetting epoxy body (UL94V-0) with metal base acting as cathode terminal. Dimensions are 10.2 × 8.5 × 3.5 mm (L × W × H); weight ≈ 1.8 g. Cathode is the entire metal underside; anode is the top-side metallized pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom Surface) | Cathode | Primary heat path and surge return node; must be soldered to large copper area or heatsink |
| Top Metallized Pad | Anode | Transient input node; connects to protected line (e.g., aircraft 28 V bus or data line) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Protects AC-coupled or differential lines (e.g., RS-485, CAN FD) against both polarities of surge |
| AEC-Q101 qualified | Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock |
| RTCA DO-160G Section 22 compliance | Meets multi-stroke lightning test requirements for civil aircraft avionics installations |
| Moisture Sensitivity Level 1 | No dry-pack or baking required before reflow - simplifies SMT assembly and reduces process risk |
| RoHS-compliant (e3) | Lead-free matte-tin plating compatible with Pb-free soldering profiles up to 260°C |
Applications
| Aircraft Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
|
Use Scenario: 28 V DC main power distribution in commercial aircraft, exposed to lightning-induced transients per DO-160G Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS placed across bus rails to clamp ±1000 V surges within 5 ns. Use Value: Prevents damage to flight control computers and sensors by limiting rail voltage to ≤644 V during multi-stroke events. |
Use Scenario: 12 V/24 V battery-fed systems in trucks and off-highway vehicles experiencing alternator load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary surge suppression device connected between battery rail and ground. Use Value: Absorbs 36 kW pulses without degradation, maintaining <10 µA leakage at 400 V standby - critical for low-quiescent systems. |
| Industrial Ethernet Port Protection | Renewable Energy DC Link Protection |
|
Use Scenario: Gigabit Ethernet PHY interfaces in outdoor telecom cabinets subjected to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Bidirectional TVS on differential pairs (e.g., TX+/TX−) to suppress common-mode transients. Use Value: Clamps 4 kV IEC 61000-4-5 surges to <644 V while adding <0.5 pF capacitance - preserves signal integrity up to 1 Gbps. |
Use Scenario: DC link between solar inverters and battery banks in utility-scale PV plants, vulnerable to grid-switching transients. IC Role / Device Role / Timing Role: High-energy TVS across 400 V DC bus to protect IGBT gate drivers and sensing circuits. Use Value: Withstands 56 A peak impulse current and 1.0 °C/W thermal resistance, enabling repeated surge handling without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400CA | Lower peak power (600 W), smaller SMB package, higher RθJA (110 °C/W) | Suitable only for single-stroke, low-repetition surges in consumer electronics - not DO-160G or ISO 7637-2 compliant | Select only for cost-sensitive, non-safety-critical designs where 36 kW rating is unnecessary |
| SMCJ400CA | Same 400 V VWM, but 1500 W peak power and larger SMC package; RθJC = 2.5 °C/W | Lacks multi-stroke lightning validation; limited to industrial IEC 61000-4-5 Class 3/4 applications | Use where DO-160G compliance is not required but higher surge margin than SMBJ is needed |
Compared with SMBJ400CA and SMCJ400CA, the MPLAD36KP400CAE3/TR delivers 24× and 24× higher peak power respectively, validated clamping performance under multi-stroke conditions, and thermal design enabling sustained operation in aerospace and heavy-duty automotive systems.
Availability
MPLAD36KP400CAE3/TR is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain, industrial Ethernet infrastructure, and renewable energy DC link protection requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP400CAE3/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
Microsemi - now part of Microchip Technology - designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP400CAE3/TR belongs to Microsemi's high-power PLAD TVS family, engineered specifically for mission-critical surge protection in aviation, transportation, and energy infrastructure where multi-stroke lightning immunity and thermal robustness are mandatory.
FAQ
What is the clamping voltage of the MPLAD36KP400CAE3/TR at its rated peak pulse current?
The MPLAD36KP400CAE3/TR has a maximum clamping voltage (VC) of 644 V at IPP = 56 A using the 10/1000 μs waveform. This value is measured per standard test conditions and ensures downstream components see no more than 644 V during worst-case surge events, making it suitable for protecting 400 V-rated systems with adequate safety margin.
Is the MPLAD36KP400CAE3/TR certified for RTCA DO-160G Section 22 lightning testing?
Yes, the MPLAD36KP400CAE3/TR is explicitly validated for RTCA DO-160G Section 22 multi-stroke lightning testing. Its 36,000 W peak pulse power rating, sub-5 ns response time, and thermal design enable compliance with Level 4 and Level 5 pin-injection waveforms (Waveform 4 and 5A), as confirmed in the official Microsemi datasheet Revision B.
Does the MPLAD36KP400CAE3/TR require moisture preconditioning before reflow soldering?
No, the MPLAD36KP400CAE3/TR is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020D.1, meaning it may be stored indefinitely at ambient conditions and placed directly into reflow without baking or dry-pack handling - reducing manufacturing complexity and eliminating moisture-related popcorning risks.
How does the thermal performance of the MPLAD36KP400CAE3/TR compare to standard SMC/SMB TVS diodes?
The MPLAD36KP400CAE3/TR achieves RθJC = 1.0 °C/W - over 2× better than typical SMCJ devices (~2.5 °C/W) and ~110× better than SMBJ parts (~110 °C/W). This allows it to dissipate 36 kW surges repeatedly when mounted on a heatsinked PCB, whereas standard packages would thermally saturate after one event.
Can the MPLAD36KP400CAE3/TR replace unidirectional TVS diodes in existing designs?
The MPLAD36KP400CAE3/TR is bidirectional (CA suffix) and cannot directly replace unidirectional parts without verifying circuit topology. In DC systems with defined polarity, a unidirectional device may offer lower leakage and tighter VBR tolerance. For AC, differential, or polarity-agnostic protection, the MPLAD36KP400CAE3/TR provides superior symmetry and dual-polarity clamping.
MPLAD36KP400CAE3/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):
- 400V
- Voltage - Breakdown (Min):
- 444V
- Voltage - Clamping (Max) @ Ipp:
- 644V
- Current - Peak Pulse (10/1000µs):
- 56A
- 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
MPLAD36KP400CAE3/TR FAQ
1.How can I place an order for MPLAD36KP400CAE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP400CAE3/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 MPLAD36KP400CAE3/TR reliable?
The price and inventory of MPLAD36KP400CAE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP400CAE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP400CAE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP400CAE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP400CAE3/TR?
MPLAD36KP400CAE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP400CAE3/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 MPLAD36KP400CAE3/TR?
For technical support, including MPLAD36KP400CAE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP400CAE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP400CAE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP400CAE3/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 MPLAD36KP400CAE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP400CAE3/TR?
All MPLAD36KP400CAE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP400CAE3/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 MPLAD36KP400CAE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP400CAE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP400CAE3/TR Tags
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