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Microchip Technology MPLAD36KP300CA
- Part No.:
- MPLAD36KP300CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP300CA.pdf
- Description:
- TVS DIODE 300VWM 483VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,274
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Product details
Overview
MPLAD36KP300CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps at ≤483 V under 75 A peak impulse current, and features a 300 V reverse standoff voltage (VWM), 333–369 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance - enabling robust secondary lightning protection per RTCA DO-160 Section 22 and IEC 61000-4-5.
For engineers reviewing the MPLAD36KP300CA datasheet, MPLAD36KP300CA pinout, MPLAD36KP300CA application, or MPLAD36KP300CA equivalent, key selection criteria include its bidirectional polarity, 300 V VWM rating, 483 V max clamping voltage at IPP, compliance with AEC-Q101 and MIL-PRF-19500 screening options, and suitability for pin-injection protection Level 5 per RTCA/DO-160F Waveform 4.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered by avalanche breakdown, with symmetrical bidirectional conduction enabling protection against both positive and negative transients without polarity sensitivity. Its low RθJC (1.0 °C/W) and void-free UL94V-0 epoxy package support high-reliability mounting on FR4 PCBs using recommended thermal pad layout.
It meets multi-stroke lightning immunity per RTCA DO-160F Section 22 (Waveform 4, Level 5) and secondary surge immunity per IEC 61000-4-5 with 42 Ω, 12 Ω, and 2 Ω source impedances - validated for Class 5 (short distance) and Class 3/4 applications depending on impedance configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 300 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 333–369 V @ 5 mA - precise avalanche threshold ensures predictable turn-on margin |
| Max Clamping Voltage (VC) | 483 V @ 75 A - limits downstream circuit voltage during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or copper pour |
| Steady-State Power Dissipation | 71 W @ TC = 100°C - supports sustained thermal management in high-ambient environments |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack required, simplifies SMT handling and storage |
Pinout & Package
Package: PLAD - low-profile surface-mount thermoset epoxy case (UL94V-0), dimensions 12.32 × 10.54 × 5.08 mm (L × W × H), metal base cathode side for unidirectional variants; MPLAD36KP300CA is bidirectional and non-polarized, with two symmetric terminals soldered to PCB pads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Identical terminal behavior - conducts equally in both directions above V(BR) |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal forming symmetrical clamping path across protected line |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Enables single-device protection of AC lines or differential buses without polarity concerns |
| 36 kW PPP rating @ 10/1000 μs | Meets RTCA DO-160 Section 22 multi-stroke lightning requirements for avionics |
| AEC-Q101 qualified | Validated for automotive load dump and ESD/EFT immunity per IEC 61000-4-2/-4-4 |
| 1.0 °C/W RθJC | Supports >70 W steady-state dissipation when mounted on heatsink-equipped PCB |
| RoHS-compliant (e3 plating) | Tin-lead-free matte-tin terminations ensure lead-free assembly compatibility and solderability |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC primary power input in flight control computers subjected to lightning-induced transients per RTCA DO-160F Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting bus voltage to ≤483 V during 6.4/69 μs Waveform 4 surges. Use Value: Enables Level 5 pin-injection compliance without external series impedance or additional protection stages. | Use Scenario: Secondary surge suppression on battery-fed 12 V supply rails in engine management systems exposed to ISO 7637-2 load dump events. IC Role / Device Role / Timing Role: Fast-response crowbar device clamping transients within <5 ns to protect microcontroller and CAN transceiver inputs. Use Value: Survives repeated 36 kW surges while maintaining VWM stability over temperature (αV(BR) = 368 mV/°C). |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Protection of 300 V DC link in variable-frequency drives against switching-induced voltage spikes and induced RFI. IC Role / Device Role / Timing Role: High-energy clamping element placed across DC bus terminals to absorb regenerative energy spikes. Use Value: 300 V VWM aligns precisely with nominal bus voltage, minimizing standby leakage (ID ≤ 10 μA) while ensuring margin before clamping. | Use Scenario: Surge hardening of 24 V signaling lines in track-side electronic interlocking units subject to IEC 61000-4-5 Class 4 surges (42 Ω source). IC Role / Device Role / Timing Role: Bidirectional transient suppressor installed at line entry point to limit induced surges to safe levels for optocoupler isolation barriers. Use Value: Validated for Class 4 with 42 Ω source impedance - eliminates need for external series resistors or gas discharge tubes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ300CA | 600 W PPP rating, same VWM and bidirectional polarity, but 1/60th the surge capacity | Restricted to low-energy industrial I/O protection; insufficient for DO-160F Level 5 or IEC 61000-4-5 Class 4 | Select only where surge energy is limited to <100 J and PCB space constraints prohibit PLAD footprint |
| SMCJ300CA | 1500 W PPP, same VWM and CA polarity, but lacks AEC-Q101 qualification and RTCA DO-160F validation | Acceptable for commercial-grade 300 V DC bus protection but not certified for aerospace or automotive safety-critical use | Choose when cost sensitivity outweighs certification requirements and surge profiles remain below 1.5 kW |
Compared with SMBJ300CA and SMCJ300CA, the MPLAD36KP300CA provides 24× and 24× higher peak pulse power respectively, full DO-160F Waveform 4 Level 5 validation, AEC-Q101 qualification, and 1.0 °C/W thermal resistance - making it the sole option for certified high-reliability 300 V surge protection in aerospace and automotive power systems.
Availability
MPLAD36KP300CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power inputs, and industrial motor drive DC bus protection requiring stable component supply, long-term lifecycle assurance, and certified surge performance.
Supply support for MPLAD36KP300CA 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 Corporation (now part of Microchip Technology) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP300CA belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical platforms where multi-stroke surge endurance and thermal robustness are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP300CA at its rated peak pulse current?
The MPLAD36KP300CA has a maximum clamping voltage (VC) of 483 V at 75 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 circuits during worst-case surge events. The clamping performance is guaranteed across the full operating temperature range and forms the basis for system-level overvoltage design margins in applications like avionics power inputs.
Is MPLAD36KP300CA certified for RTCA DO-160F lightning protection?
Yes, the MPLAD36KP300CA is validated for pin-injection protection Level 5 per RTCA DO-160F Section 22 Waveform 4 (6.4/69 μs) at 25°C. This certification is explicitly stated in the "Pin injection protection" section of the RF01216 datasheet. The device meets this requirement due to its fast response time (<5 ns), low clamping voltage, and ability to dissipate multi-stroke energy without degradation - making MPLAD36KP300CA suitable for flight-critical avionics power and signal lines.
Does MPLAD36KP300CA require derating at elevated temperatures?
Yes, MPLAD36KP300CA requires thermal derating above 25°C ambient. Its peak pulse power (PPP) must be reduced per the derating curve in Figure 3 of RF01216, and steady-state power dissipation drops from 71 W at TC = 100°C to 2.5 W at TA = 25°C. The device's temperature coefficient of breakdown voltage (αV(BR) = 368 mV/°C) also necessitates voltage margin adjustment in wide-temperature designs. Full derating guidance is provided in MicroNote 134 referenced in the datasheet.
What packaging options are available for MPLAD36KP300CA?
MPLAD36KP300CA is offered in bulk and tape-and-reel formats. Tape-and-reel packaging follows EIA-481-B standards and requires adding the "TR" suffix to the part number (e.g., MPLAD36KP300CA-TR). The device uses void-free transfer-molded thermosetting epoxy (UL94V-0) with annealed matte-tin (e3) RoHS-compliant terminations. Weight is approximately 1.7–2.0 g, and the recommended pad layout is specified on page 6 of RF01216 for optimal thermal and mechanical reliability.
How does the bidirectional construction of MPLAD36KP300CA affect its circuit placement?
The bidirectional construction of MPLAD36KP300CA eliminates polarity sensitivity, allowing it to be placed across any two points in a circuit without regard to voltage direction - ideal for AC lines, differential buses, or floating DC rails. Unlike unidirectional TVS devices, MPLAD36KP300CA has identical electrical behavior on both terminals, with symmetrical breakdown and clamping characteristics. This simplifies layout, reduces BOM count, and avoids field failures caused by incorrect orientation during assembly.
MPLAD36KP300CA 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):
- 300V
- Voltage - Breakdown (Min):
- 333V
- Voltage - Clamping (Max) @ Ipp:
- 483V
- Current - Peak Pulse (10/1000µs):
- 75A
- 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
MPLAD36KP300CA FAQ
1.How can I place an order for MPLAD36KP300CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP300CA 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 MPLAD36KP300CA reliable?
The price and inventory of MPLAD36KP300CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP300CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP300CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP300CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP300CA?
MPLAD36KP300CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP300CA 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 MPLAD36KP300CA?
For technical support, including MPLAD36KP300CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP300CA requirements.
6.How does Aetrix verify that MPLAD36KP300CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP300CA 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 MPLAD36KP300CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP300CA?
All MPLAD36KP300CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP300CA, 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 MPLAD36KP300CA part is unused and in its original packaging.
Return procedure for MPLAD36KP300CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP300CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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