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Microchip Technology MPLAD36KP45CAE3/TR
- Part No.:
- MPLAD36KP45CAE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP45CAE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:5,872
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Product details
Overview
MPLAD36KP45CAE3/TR from Microchip Technology (formerly Microsemi) is a bidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 45 V working standoff voltage (VWM), 50.0–55.3 V breakdown voltage (VBR), and 72.7 V clamping voltage (VC) at 496 A peak impulse current - designed for secondary lightning protection in avionics per RTCA DO-160 Section 22 and IEC 61000-4-5.
For engineers reviewing the MPLAD36KP45CAE3/TR datasheet, MPLAD36KP45CAE3/TR pinout, MPLAD36KP45CAE3/TR application, or MPLAD36KP45CAE3/TR equivalent, this device delivers verified multi-stroke surge capability, AEC-Q101 qualification, RoHS-compliant matte-tin plating, and low thermal resistance (RθJC = 1.0 °C/W) in a PLAD package - critical for high-reliability aerospace, automotive load dump, and industrial power rail protection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling robust protection against bipolar transients without polarity-sensitive layout constraints. Its low clamping ratio (VC/VWM ≈ 1.62) and sub-5 ns response time ensure fast voltage limiting during fast-rising surges such as EFT (IEC 61000-4-4) and pin injection waveforms (RTCA DO-160G Waveform 4 & 5A).
Thermally optimized for high-power dissipation, it features a metal-base cathode structure with void-free epoxy encapsulation (UL94V-0), junction-to-case thermal resistance of 1.0 °C/W, and derated steady-state power up to 504 W at TC = 100 °C - supporting integration into thermally constrained PCB layouts with FR4 and 1 oz copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 45 V - Maximum continuous DC or repetitive peak reverse voltage applied without conduction; sets minimum system operating margin. |
| VBR @ IBR | 50.0–55.3 V at 5 mA - Confirmed breakdown threshold range; ensures predictable turn-on before damage to downstream circuitry. |
| VC @ IPP | 72.7 V at 496 A - Clamped voltage under full-rated 10/1000 μs surge; defines maximum stress on protected ICs. |
| PPP | 36,000 W - Peak pulse power handling at 10/1000 μs; enables compliance with DO-160 Level 4/5 and IEC 61000-4-5 Class 5. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; allows direct heatsink mounting for sustained surge duty cycles. |
| ID @ VWM | ≤10 µA - Standby leakage current at rated standoff; minimizes quiescent power loss in always-on systems. |
| αV(BR) | 51 mV/°C - Temperature coefficient of breakdown voltage; supports stable clamping performance across –55 to +150 °C junction range. |
Pinout & Package
The MPLAD36KP45CAE3/TR uses the PLAD surface-mount package: a low-profile, thermally enhanced outline with exposed metal base acting as the cathode terminal for unidirectional variants - and serving as the common reference node for bidirectional operation. The device has two terminals: anode and cathode, with polarity marked by orientation on the body and confirmed via the metal base (cathode) per Figure 5 and Table 5 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive surge path input | Accepts transient energy from either polarity in bidirectional mode; connects to protected line (e.g., CAN_H, RS-485 A). |
| Cathode (metal base) | Common reference / heat sink interface | Serves as return path and primary thermal conduction surface; must be soldered to large copper pour or heatsink for RθJC = 1.0 °C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetrical clamping on AC-coupled or floating lines (e.g., differential buses) without external polarity management. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain and chassis applications including 12 V/24 V load dump per ISO 7637-2. |
| DO-160G Section 22 compliance | Meets multi-stroke lightning test requirements (Waveform 4 & 5A) for aircraft electronics up to Level 5 at 45 V standoff. |
| RoHS-compliant matte-tin plating | Ensures solderability per MIL-STD-750 Method 2026 and eliminates lead-based contamination in production environments. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement per IPC/JEDEC J-STD-020D.1 - simplifies SMT handling and reduces assembly cost. |
Applications
| Avionics Power Bus Protection | Automotive CAN FD Transceiver Protection |
|---|---|
Use Scenario: Protecting 28 V DC distribution buses in commercial aircraft against induced lightning transients per RTCA DO-160G Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS placed at bus entry point to clamp common-mode surges before they reach power converters and avionics controllers. Use Value: With 72.7 V clamping at 496 A and <5 ns response, MPLAD36KP45CAE3/TR limits bus overvoltage to safe levels for 3.3 V/5 V logic interfaces while surviving repeated strokes. | Use Scenario: Safeguarding high-speed CAN FD physical layer transceivers (e.g., TCAN1042) from ESD and coupled noise in electric vehicle battery management systems. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS installed directly at connector pins to suppress fast transients without degrading signal integrity. Use Value: 10 µA leakage and 72.7 V clamping preserve CAN FD timing margins and prevent false dominant states during 10/1000 μs load dump events. |
| Industrial Ethernet PHY Protection | Renewable Energy Inverter DC Link Protection |
Use Scenario: Shielding Gigabit Ethernet PHYs (e.g., DP83867IR) from EFT bursts and surge coupling on PoE-powered equipment in factory automation. IC Role / Device Role / Timing Role: Bidirectional TVS on MDI pairs to absorb common-mode transients while maintaining <2 pF capacitance impact on differential impedance. Use Value: Enables IEC 61000-4-4 Level 4 compliance with minimal signal distortion due to low parasitic capacitance and precise 45 V standoff matching PHY operating voltage. | Use Scenario: Securing 400 V DC link rails in solar inverters against grid-switching transients and lightning-induced surges in outdoor installations. IC Role / Device Role / Timing Role: High-energy TVS mounted directly across DC bus capacitors to clamp voltage spikes before IGBT gate drivers are damaged. Use Value: 36 kW pulse rating and 1.0 °C/W thermal resistance allow sustained clamping at 45 V standoff without thermal runaway during repeated 10/1000 μs events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45CA | Lower peak power (600 W), higher clamping voltage (70 V), SMB package with RθJA = 110 °C/W. | Suitable for consumer-grade single-stroke ESD/EFT; insufficient for DO-160 multi-stroke or automotive load dump. | Select only for cost-sensitive, low-energy applications where thermal mass and surge repetition are not concerns. |
| SMCJ45CA | Higher peak power (1500 W), same clamping (70 V), SMC package with RθJA = 25 °C/W - but no AEC-Q101 or DO-160 validation. | Used in industrial motor drives and UPS systems; lacks aviation qualification and traceability for aerospace BOMs. | Prefer when AEC-Q101 or DO-160 compliance is not required and board space permits larger SMC footprint. |
Compared with SMBJ45CA and SMCJ45CA, the MPLAD36KP45CAE3/TR uniquely combines 36 kW surge capacity, AEC-Q101 qualification, DO-160G Level 5 compliance, and 1.0 °C/W thermal resistance - making it the only option for certified multi-stroke protection in safety-critical avionics and automotive power systems.
Availability
MPLAD36KP45CAE3/TR is available at Aetrix Electronics and suitable for avionics power bus protection, automotive CAN FD transceiver protection, and industrial Ethernet PHY protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for MPLAD36KP45CAE3/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 and now offers its high-reliability analog, mixed-signal, and discrete portfolio - including radiation-tolerant, aerospace-grade, and automotive-qualified components.
The MPLAD36KP45CAE3/TR belongs to Microchip's high-power surface-mount TVS family, engineered specifically for multi-stroke lightning protection in certified avionics and harsh-environment automotive systems where thermal robustness and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP45CAE3/TR at its rated peak pulse current?
The MPLAD36KP45CAE3/TR has a maximum clamping voltage (VC) of 72.7 V at its rated peak pulse current (IPP) of 496 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 worst-case surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is MPLAD36KP45CAE3/TR qualified for automotive applications?
Yes, the MPLAD36KP45CAE3/TR is AEC-Q101 qualified, confirming its suitability for automotive powertrain and chassis applications. It meets stringent stress tests including temperature cycling, humidity bias, and mechanical shock - and its 45 V working standoff and 72.7 V clamping voltage align with 24 V system load dump requirements per ISO 7637-2. Full lot traceability and wafer-level screening further support automotive BOM compliance.
Does MPLAD36KP45CAE3/TR meet RTCA DO-160G lightning protection standards?
Yes, the MPLAD36KP45CAE3/TR is explicitly validated for RTCA DO-160G Section 22 lightning-induced transient testing. Per the datasheet, it achieves Level 4 and Level 5 compliance for Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) at 45 V standoff - making it suitable for primary and secondary lightning protection in commercial aircraft electronics without additional external circuitry.
What is the thermal resistance specification for MPLAD36KP45CAE3/TR, and how does it affect PCB layout?
The MPLAD36KP45CAE3/TR has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, measured with the metal base fully soldered to a thermal pad. This requires PCB layout with a large copper pour (minimum 1 in² recommended) connected to the cathode base, ideally with multiple thermal vias to internal ground planes. Failure to implement adequate copper area will degrade thermal performance and reduce surge endurance during repetitive events.
How does the bidirectional configuration of MPLAD36KP45CAE3/TR impact its use in differential signal lines?
The bidirectional configuration of MPLAD36KP45CAE3/TR enables symmetrical clamping on both polarities of differential buses like CAN FD or RS-485, eliminating the need for dual unidirectional devices or polarity-aware placement. Its matched VBR (50.0–55.3 V) and low leakage (<10 µA) preserve common-mode rejection and signal fidelity - unlike unidirectional TVS diodes that require careful orientation and may introduce imbalance in high-speed data paths.
MPLAD36KP45CAE3/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):
- 45V
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 72.7V
- Current - Peak Pulse (10/1000µs):
- 496A
- 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
MPLAD36KP45CAE3/TR FAQ
1.How can I place an order for MPLAD36KP45CAE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP45CAE3/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 MPLAD36KP45CAE3/TR reliable?
The price and inventory of MPLAD36KP45CAE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP45CAE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP45CAE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP45CAE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP45CAE3/TR?
MPLAD36KP45CAE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP45CAE3/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 MPLAD36KP45CAE3/TR?
For technical support, including MPLAD36KP45CAE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP45CAE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP45CAE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP45CAE3/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 MPLAD36KP45CAE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP45CAE3/TR?
All MPLAD36KP45CAE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP45CAE3/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 MPLAD36KP45CAE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP45CAE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP45CAE3/TR Tags
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