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Microchip Technology MPLAD36KP40CAE3/TR
- Part No.:
- MPLAD36KP40CAE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP40CAE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:2,554
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Product details
Overview
MPLAD36KP40CAE3/TR from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 40 V working standoff voltage (VWM), 44.4–49.1 V breakdown voltage (VBR), and 64.5 V clamping voltage (VC) at 559 A peak pulse current - designed for lightning and load dump protection in aerospace and automotive power rails.
For engineers reviewing the MPLAD36KP40CAE3/TR datasheet, MPLAD36KP40CAE3/TR pinout, MPLAD36KP40CAE3/TR application, or MPLAD36KP40CAE3/TR equivalent, key selection criteria include bidirectional polarity, DO-160 Section 22 multi-stroke compliance, IEC 61000-4-5 Class 5 secondary lightning capability (42 Ω source), thermal resistance of 1.0 °C/W (junction-to-case), and RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transients above its VWM, delivering sub-5 ns response time in bidirectional configuration and maintaining low clamping ratio (VC/VBR ≈ 1.31). Its PLAD package features a metal base acting as cathode terminal, enabling direct thermal coupling to PCB copper pour or heatsink.
Rated for –55 °C to +150 °C junction temperature, it supports steady-state dissipation up to 504 W at TC = 100 °C and exhibits 44 mV/°C temperature coefficient of VBR, ensuring predictable voltage drift across operating range. Surge testing per IEC 61000-4-2/4-4/4-5 and RTCA/DO-160G Waveform 4 & 5A is validated for this specific part number.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous dc/repetitive peak reverse voltage before conduction begins; sets minimum system operating margin. |
| VBR @ 5 mA | 44.4–49.1 V - Measured breakdown voltage range at 5 mA test current; defines turn-on threshold consistency. |
| VC @ IPP | 64.5 V at 559 A - Clamped voltage during 10/1000 μs surge; determines maximum stress on downstream circuitry. |
| PPP | 36,000 W - Peak pulse power handling at 10/1000 μs waveform; enables robust multi-stroke lightning protection. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; allows precise thermal design when mounted to heatsink or copper plane. |
| ID @ VWM | 10 µA max - Standby leakage current at rated standoff voltage; ensures minimal power loss in always-on systems. |
| αVBR | 44 mV/°C - Temperature coefficient of breakdown voltage; enables accurate derating over –55 °C to +150 °C range. |
Pinout & Package
The MPLAD36KP40CAE3/TR uses the PLAD surface-mount package: void-free UL94V-0 epoxy body with metal base acting as cathode terminal; total weight 1.7–2.0 g; RoHS-compliant annealed matte-tin plating on terminals; polarity marked by cathode on metal bottom surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary current return path and thermal interface; must be soldered to large copper area or heatsink for RθJC = 1.0 °C/W performance. |
| Top Surface Pad | Anode | Signal/power input side; connects to protected line; requires controlled impedance trace routing for fast transient coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Clamps both positive and negative transients without polarity sensitivity - ideal for AC lines or floating DC buses. |
| AEC-Q101 qualification | Validated for automotive under-hood environments including temperature cycling, humidity, and mechanical shock per JESD22 standards. |
| DO-160G Section 22 compliance | Passes multi-stroke lightning test (Waveform 4 & 5A) up to Level 5 - required for avionics power distribution units. |
| Moisture Sensitivity Level 1 | No dry pack or baking required before reflow - simplifies SMT assembly and reduces manufacturing cost. |
| Traceable wafer & assembly lots | Full lot traceability enables failure analysis and reliability monitoring for safety-critical aerospace programs. |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC power bus in commercial aircraft avionics rack subjected to repeated lightning-induced surges per RTCA/DO-160G Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS device clamping transients on main power rail to protect downstream DC-DC converters and FPGAs. Use Value: Enables compliance with Level 5 pin injection (Waveform 4, 6.4/69 μs) and multi-stroke endurance without degradation over 1000+ strikes. | Use Scenario: 12 V battery-fed engine control unit exposed to ISO 7637-2 Pulse 5a (load dump) events up to 60 V/100 ms. IC Role / Device Role / Timing Role: Primary transient suppression element placed at ECU input connector to limit voltage excursion to ≤64.5 V. Use Value: Withstands 36 kW peak power and dissipates energy without thermal runaway, eliminating need for series fuse coordination. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: 400 V DC link in variable-frequency drive subject to IGBT switching transients and inductive kickback. IC Role / Device Role / Timing Role: Secondary protection device parallel to bulk capacitor, clamping overshoots exceeding 40 V working standoff. Use Value: Sub-5 ns response time prevents latch-up in gate drivers; 1.0 °C/W RθJC enables direct mounting to aluminum chassis for passive cooling. | Use Scenario: 72 V signaling line in train control system requiring IEC 61000-4-5 Class 4 immunity (42 Ω source, 4 kV) over 10-year service life. IC Role / Device Role / Timing Role: Bidirectional TVS placed at field-side connector to absorb coupled surges from adjacent traction power cables. Use Value: Validated for long-distance Class 4 protection (up to 280CA rating), ensuring margin against aging and voltage drift over lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40CA | 600 W PPP, 43.3 V VC @ 13.9 A, DO-214AA package, RθJC ≈ 40 °C/W | Lower power handling; suitable only for single-stroke or low-energy transients | Select SMBJ40CA only for cost-sensitive consumer electronics where 36 kW surge capacity is unnecessary. |
| SMCJ40CA | 1500 W PPP, 64.5 V VC @ 23.3 A, DO-214AB package, RθJC ≈ 15 °C/W | Mid-power alternative with higher thermal resistance than PLAD package | Choose SMCJ40CA when board space permits larger footprint but full 36 kW rating is not required. |
Compared with SMBJ40CA and SMCJ40CA, the MPLAD36KP40CAE3/TR delivers 24× and 24× higher peak pulse power respectively, with 15× and 15× lower thermal resistance - making it uniquely suited for mission-critical aerospace and heavy-duty automotive systems demanding multi-stroke survivability and thermal stability.
Availability
MPLAD36KP40CAE3/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive DC bus applications requiring stable component supply across extended production lifecycles.
Supply support for MPLAD36KP40CAE3/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) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened ICs for aerospace, defense, and industrial markets.
The MPLAD36KP40CAE3/TR belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump compliance in harsh-environment systems.
FAQ
What is the clamping voltage of MPLAD36KP40CAE3/TR at its rated peak pulse current?
The MPLAD36KP40CAE3/TR has a maximum clamping voltage (VC) of 64.5 V when subjected to its rated peak pulse current of 559 A under the standard 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that downstream components experience no more than 64.5 V during worst-case surge events - critical for protecting 72 V-rated interface ICs and microcontrollers in aerospace systems.
Is MPLAD36KP40CAE3/TR qualified for automotive applications?
Yes, the MPLAD36KP40CAE3/TR is AEC-Q101 qualified, meaning it has passed stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life required for automotive under-hood use. Its 40 V VWM and 64.5 V VC make it suitable for 12 V and 24 V battery systems, particularly for load dump protection in engine control units and ADAS power modules where sustained reliability is mandatory.
Does MPLAD36KP40CAE3/TR meet RTCA/DO-160G lightning protection requirements?
Yes, the MPLAD36KP40CAE3/TR is explicitly validated for RTCA/DO-160G Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) up to Level 5 and Waveform 5A (40/120 μs) up to Level 4. Its 36,000 W peak pulse rating and bidirectional architecture ensure compliance without derating - a requirement for commercial avionics power distribution units certified under FAA AC 20-136A.
What is the thermal resistance junction-to-case for MPLAD36KP40CAE3/TR?
The MPLAD36KP40CAE3/TR has a specified thermal resistance junction-to-case (RθJC) of 1.0 °C/W, measured when mounted on an FR4 PCB with recommended pad layout per Figure 7 of the datasheet. This ultra-low value enables efficient heat transfer to external heatsinks or copper planes, supporting continuous operation at elevated ambient temperatures up to +150 °C junction - essential for enclosed avionics enclosures with limited airflow.
How does the bidirectional polarity of MPLAD36KP40CAE3/TR affect its circuit placement?
The "CA" suffix confirms bidirectional polarity, meaning the MPLAD36KP40CAE3/TR clamps transients of either polarity symmetrically - no orientation dependency during PCB placement. The metal base serves as common cathode for both directions, so it must be connected to the reference plane (e.g., chassis ground or power return), while the top pad connects to the protected line. This eliminates risk of incorrect installation in AC-coupled or floating DC systems like railway signaling interfaces.
MPLAD36KP40CAE3/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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 559A
- 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
MPLAD36KP40CAE3/TR FAQ
1.How can I place an order for MPLAD36KP40CAE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP40CAE3/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 MPLAD36KP40CAE3/TR reliable?
The price and inventory of MPLAD36KP40CAE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP40CAE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP40CAE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP40CAE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP40CAE3/TR?
MPLAD36KP40CAE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP40CAE3/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 MPLAD36KP40CAE3/TR?
For technical support, including MPLAD36KP40CAE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP40CAE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP40CAE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP40CAE3/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 MPLAD36KP40CAE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP40CAE3/TR?
All MPLAD36KP40CAE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP40CAE3/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 MPLAD36KP40CAE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP40CAE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP40CAE3/TR Tags
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