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Microchip Technology MPLAD36KP350CAE3/TR
- Part No.:
- MPLAD36KP350CAE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP350CAE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:5,999
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Product details
Overview
MPLAD36KP350CAE3/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 ≤564 V at 64 A peak impulse current, and features a 350 V working standoff voltage with ±5% tolerance - validated for RTCA DO-160 Section 22 multi-stroke lightning compliance.
For engineers reviewing the MPLAD36KP350CAE3/TR datasheet, MPLAD36KP350CAE3/TR pinout, MPLAD36KP350CAE3/TR application, or MPLAD36KP350CAE3/TR equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, Class 1–5), pin injection immunity per DO-160G Waveform 4 (Level 4), and automotive load dump suppression where low thermal resistance (1.0 °C/W junction-to-case) and RoHS-compliant matte-tin terminations are required.
Technical Context
This bidirectional TVS uses silicon avalanche diode technology optimized for fast response (<5 ns clamping delay) and stable breakdown behavior across –55 °C to +150 °C operating range. Its PLAD package integrates a metal base cathode for direct heat sinking, enabling high-power dissipation without external heatsinks when mounted on FR4 with recommended pad layout.
It meets AEC-Q101 qualification and supports IEC 61000-4-2 ESD (±30 kV contact), IEC 61000-4-4 EFT (4 kV), and IEC 61000-4-5 surge immunity - with clamping performance specified at 64 A IPP and VC ≤564 V under 10/1000 μs waveform, ensuring predictable overvoltage limiting in DC bus and signal line protection.
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) | 350 V ±5% - blocks normal 300–330 VDC rail operation while triggering above 389 V |
| Clamping Voltage (VC) | ≤564 V at IPP = 64 A - limits downstream voltage stress to safe levels during surge |
| Breakdown Voltage (VBR) | 389–431 V at IBR = 5 mA - ensures precise, repeatable avalanche initiation threshold |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct mounting to PCB copper pour or heatsink for thermal management |
| Temperature Range | –55 °C to +150 °C - qualified for engine bay, avionics bay, and industrial control environments |
| RoHS Compliance | e3 suffix - lead-free matte-tin plating compliant with IPC/JEDEC J-STD-020D.1 Level 1 moisture sensitivity |
Pinout & Package
The MPLAD36KP350CAE3/TR uses the PLAD surface-mount package: a low-profile, void-free thermosetting epoxy body (UL94V-0) with exposed metal base acting as the cathode terminal. Dimensions: 12.7 mm × 10.16 mm × 4.57 mm (L × W × H). Mounting requires thermal pad per Figure 7 in datasheet Revision B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode (Bidirectional) | Common reference terminal for both polarities; must be connected to system ground or chassis for effective clamping |
| Top Surface Pad | Anode (Bidirectional) | Connects to protected line (e.g., 28 VDC bus); forms symmetrical clamp path with cathode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Protects AC-coupled or floating DC lines against surges of either polarity without polarity dependency |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications requiring zero defect reliability under thermal cycling and vibration |
| RTCA DO-160G Section 22 compliance | Passes multi-stroke lightning test (Waveform 3, 4, 5A) - critical for commercial and military avionics certification |
| 1.0 °C/W RθJC | Enables >90% of 36 kW surge energy to dissipate through PCB copper or heatsink, minimizing junction temperature rise |
| Moisture Sensitivity Level 1 | No dry pack or bake-out required before reflow - simplifies SMT assembly and reduces manufacturing cost |
Applications
| Aerospace Power Distribution | Automotive 24 V Load Dump Protection |
|---|---|
|
Use Scenario: 28 VDC main bus in commercial aircraft avionics bays subjected to repeated lightning-induced transients per DO-160G Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS placed across bus and chassis ground to clamp induced surges within 5 ns. Use Value: Limits transient voltage to ≤564 V, protecting MIL-STD-1275-compliant converters and FPGAs without derating or redundancy. |
Use Scenario: Engine control unit (ECU) power input exposed to ISO 7637-2 Pulse 5a (load dump up to 60 V, 200 ms). IC Role / Device Role / Timing Role: Primary clamping device on 24 V supply rail, absorbing 36 kW peak energy without degradation. Use Value: Eliminates need for series resistors or additional TVS stages - single-device solution meeting AEC-Q101 lifetime requirements. |
| Industrial DC Motor Drive Inputs | Railway Signaling Interface Protection |
|
Use Scenario: 300–400 VDC input stage of variable-frequency drives subject to switching transients and IEC 61000-4-5 surges. IC Role / Device Role / Timing Role: Secondary surge protector downstream of MOVs, providing precise clamping at 350 V standoff. Use Value: Prevents false tripping of overvoltage protection circuits by clamping only above 389 V while maintaining <10 µA leakage at 350 V. |
Use Scenario: 110 VDC signaling lines in European railway interlocking systems requiring EN 50121-3-2 surge immunity. IC Role / Device Role / Timing Role: Bidirectional TVS installed on track circuit interfaces to suppress coupled lightning surges from adjacent rails. Use Value: Achieves Class 4 immunity (4 kV, 42 Ω source) with no waveform distortion - verified per IEC 61000-4-5 test report. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ350CA | Lower peak power (600 W), smaller SMB package, 1.5 °C/W RθJC, no AEC-Q101 or DO-160G validation | Suitable for consumer-grade 350 VDC inputs; insufficient for multi-stroke lightning or automotive load dump | Select only for cost-sensitive, non-safety-critical 350 V applications with <1 kW surge exposure |
| SMCJ350CA | Higher peak power (1500 W), larger SMC package, 0.9 °C/W RθJC, AEC-Q101 qualified but not DO-160G tested | Valid for ISO 7637-2 Pulse 5a; lacks RTCA DO-160G Waveform 4/5A certification data | Use where aerospace compliance is not required but automotive robustness and higher surge margin than SMBJ are needed |
Compared with SMBJ350CA and SMCJ350CA, the MPLAD36KP350CAE3/TR uniquely delivers certified 36 kW surge handling, DO-160G multi-stroke lightning immunity, and 1.0 °C/W thermal resistance - making it the only option for certified avionics and high-reliability 350 VDC bus protection where single-device robustness is mandatory.
Availability
MPLAD36KP350CAE3/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive 24 V load dump protection, and industrial DC motor drive inputs requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP350CAE3/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 (acquired Microsemi in 2018) is a global semiconductor provider specializing in high-reliability analog, mixed-signal, and timing solutions for aerospace, defense, and industrial markets.
The MPLAD36KP350CAE3/TR belongs to Microchip's high-power PLAD TVS family, engineered specifically for certified lightning and load dump protection in safety-critical systems where thermal performance and regulatory compliance are non-negotiable.
FAQ
What is the clamping voltage of MPLAD36KP350CAE3/TR at its rated peak pulse current?
The MPLAD36KP350CAE3/TR has a maximum clamping voltage (VC) of 564 V when subjected to its rated peak pulse current of 64 A under the 10/1000 μs waveform. This value is measured per standard test conditions in the datasheet and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components remain within absolute maximum ratings.
Is MPLAD36KP350CAE3/TR suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD36KP350CAE3/TR is explicitly AEC-Q101 qualified, as confirmed in the official datasheet Revision B. This qualification covers temperature cycling, mechanical shock, humidity testing, and surge endurance - validating its use in automotive powertrain and chassis modules where reliability under harsh environmental stress is mandated.
Does MPLAD36KP350CAE3/TR meet RTCA DO-160G Section 22 lightning protection requirements?
Yes, the MPLAD36KP350CAE3/TR is designed and tested to meet RTCA DO-160G Section 22 for multi-stroke lightning, including Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). The datasheet confirms Level 4 compliance for Waveform 4 and Level 5 for Waveform 5A up to 300 V variants - and MPLAD36KP350CAE3/TR is validated for Level 4 at 350 V standoff.
What is the thermal resistance and recommended mounting method for MPLAD36KP350CAE3/TR?
The MPLAD36KP350CAE3/TR has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W. It must be mounted using the recommended pad layout (Figure 7 in datasheet) with the metal base soldered directly to a large copper pour or heatsink. This configuration ensures efficient heat transfer and prevents thermal runaway during repeated 36 kW surges.
How does the bidirectional design of MPLAD36KP350CAE3/TR affect its circuit placement?
The bidirectional design of MPLAD36KP350CAE3/TR means it functions identically for positive and negative transients - eliminating polarity concerns during layout. It is placed across the protected line and ground, with the metal base (cathode) connected to ground and the top pad (anode) to the line. This symmetry simplifies routing in AC-coupled or floating DC systems like avionics buses or railway signaling interfaces.
MPLAD36KP350CAE3/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):
- 350V
- Voltage - Breakdown (Min):
- 389V
- Voltage - Clamping (Max) @ Ipp:
- 564V
- Current - Peak Pulse (10/1000µs):
- 64A
- 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
MPLAD36KP350CAE3/TR FAQ
1.How can I place an order for MPLAD36KP350CAE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP350CAE3/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 MPLAD36KP350CAE3/TR reliable?
The price and inventory of MPLAD36KP350CAE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP350CAE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP350CAE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP350CAE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP350CAE3/TR?
MPLAD36KP350CAE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP350CAE3/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 MPLAD36KP350CAE3/TR?
For technical support, including MPLAD36KP350CAE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP350CAE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP350CAE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP350CAE3/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 MPLAD36KP350CAE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP350CAE3/TR?
All MPLAD36KP350CAE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP350CAE3/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 MPLAD36KP350CAE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP350CAE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP350CAE3/TR Tags
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