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Microchip Technology MPLAD36KP400CAE3
- Part No.:
- MPLAD36KP400CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP400CAE3.pdf
- Description:
- TVS DIODE 400VWM 644VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,266
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Product details
Overview
MPLAD36KP400CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, features a 400 V reverse standoff voltage (VWM), clamps to ≤644 V at 50 A peak pulse current, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP400CAE3 datasheet, MPLAD36KP400CAE3 pinout, MPLAD36KP400CAE3 application, or MPLAD36KP400CAE3 equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin-injection immunity per RTCA/DO-160F Waveforms 4 and 5A, and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device during transients, leveraging avalanche breakdown in silicon PN junctions to divert surge energy away from protected circuitry. Its bidirectional construction enables symmetrical clamping for AC-coupled or floating signal lines, with thermal resistance of 1.0 °C/W junction-to-case enabling effective heat transfer to PCB copper or heatsink.
The device is characterized for operation across –55°C to +150°C junction temperature, with <5 ns response time and low standby current (≤10 μA at VWM). It supports steady-state power dissipation up to 71 W at TC = 100°C and is qualified to AEC-Q101 for automotive underhood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains full-rated surge energy without degradation in single-event or low-duty-cycle (<0.05%) applications |
| Reverse Standoff Voltage (VWM) | 400 V - maximum continuous DC or peak AC voltage the device blocks without conduction; sets minimum system operating voltage margin |
| Max Clamping Voltage (VC) | 644 V @ IPP = 50 A - peak voltage seen by protected circuit during worst-case 10/1000 μs surge; defines downstream component voltage stress |
| Breakdown Voltage (V(BR)) | 444–492 V @ 5 mA - guaranteed avalanche initiation range; ensures reliable turn-on before VC is exceeded |
| Thermal Resistance (RθJC) | 1.0 °C/W - enables direct thermal path to heatsink or large copper pour; critical for sustained surge repetition or elevated ambient conditions |
| Steady-State Power (PD) | 71 W @ TC = 100°C - usable continuous power handling when case temperature is actively managed, e.g., via mounting pad or heatsink |
| Temperature Range | –55°C to +150°C - validated operation across extended industrial and aerospace environments without derating |
Pinout & Package
Package: PLAD (Plastic Leaded Anode/Cathode) - void-free UL94V-0 thermosetting epoxy body with metal baseplate for thermal and mechanical robustness; dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H); weight: ~1.85 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface Pad) | Surge Current Entry (Bidirectional) | Primary current path during positive- or negative-polarity transients; soldered to PCB trace requiring low-inductance routing |
| Cathode (Metal Baseplate) | Surge Current Return / Thermal Path | Low-resistance thermal interface to PCB copper or heatsink; electrically connected to ground or reference plane in most layouts |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Enables protection of AC-coupled buses (e.g., RS-485, CAN FD, Ethernet PHY) without polarity sensitivity or external biasing |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for Level 4 (6.4/69 μs) and Level 5 (40/120 μs) pin injection immunity - essential for avionics I/O interface hardening |
| IEC 61000-4-5 Class 5 support (42 Ω, short distance) | Meets highest severity secondary lightning test for aircraft subsystems where surge source impedance is low and energy coupling is strong |
| RoHS-compliant matte-tin plating (e3) | Ensures reliable solderability per MIL-STD-750 Method 2026 and compatibility with lead-free reflow profiles up to 260°C |
| AEC-Q101 qualification | Confirms reliability for automotive powertrain and chassis modules exposed to vibration, thermal cycling, and load dump events |
Applications
| Aircraft Data Bus Protection | Automotive Load Dump Suppression |
|---|---|
|
Use Scenario: Protecting ARINC 429 or MIL-STD-1553 data lines against induced lightning currents and EMI coupling in flight control systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to clamp transients before reaching line driver/receiver ICs. Use Value: Maintains signal integrity under RTCA DO-160 Section 22 multi-stroke lightning (≥36 kW) while preserving <5 ns response time and low capacitance. |
Use Scenario: Safeguarding 12 V/24 V vehicle electronics (e.g., ADAS ECUs, infotainment head units) during alternator load dump events (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary surge shunt mounted at power input stage to absorb >300 V, 100 ms transients without failure. Use Value: Withstands 36,000 W peak power and 50 A IPP, eliminating need for series resistors or additional filtering stages in compact ECU designs. |
| Industrial Ethernet PHY Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Hardening Gigabit Ethernet PHY interfaces in outdoor telecom cabinets exposed to nearby lightning strikes and RFI. IC Role / Device Role / Timing Role: Bidirectional TVS on differential pairs (TX+/−, RX+/−) to suppress common-mode surges without distorting signal rise/fall times. Use Value: Clamps to ≤644 V within <5 ns while maintaining low leakage (<10 μA), preventing PHY latch-up or damage during IEC 61000-4-5 testing. |
Use Scenario: Protecting high-voltage DC link monitoring circuits in solar inverters subjected to grid-switching transients and capacitor bank discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS across measurement inputs (e.g., shunt resistor sense lines) to prevent overvoltage damage to ADC front-ends. Use Value: 400 V VWM matches typical 350–450 V DC link ranges; 1.0 °C/W RθJC allows direct mounting to metal chassis for thermal stability during repeated surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400CA | Lower PPP rating (600 W), smaller SMB package, higher RθJA (50 °C/W), no AEC-Q101 or DO-160 qualification | Suitable only for low-energy consumer or industrial I/O; cannot meet aircraft lightning or automotive load dump requirements | Select SMBJ400CA only for cost-sensitive, non-safety-critical applications with <1% duty cycle and ambient <85°C. |
| SMCJ400CA | Higher PPP (1500 W), larger SMC package, RθJA ≈ 25 °C/W, qualified to AEC-Q101 but not DO-160F | Acceptable for automotive ECUs with moderate surge exposure; insufficient for multi-stroke lightning or pin injection tests | Choose SMCJ400CA when DO-160 compliance is unnecessary but AEC-Q101 and 1500 W surge capability are required in space-constrained designs. |
Compared with SMBJ400CA and SMCJ400CA, MPLAD36KP400CAE3 provides 24× and 24× higher peak pulse power respectively, certified DO-160F Waveform 4/5A immunity, and 1.0 °C/W thermal resistance-making it the only option for high-reliability aerospace and heavy-duty automotive surge protection where multi-kW energy absorption and rapid thermal recovery are mandatory.
Availability
MPLAD36KP400CAE3 is available at Aetrix Electronics and suitable for aircraft avionics, automotive powertrain modules, and industrial renewable energy systems requiring stable component supply across extended product lifecycles and rigorous environmental qualification.
Supply support for MPLAD36KP400CAE3 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) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The MPLAD series was developed specifically for high-power, surface-mount transient suppression in safety-critical platforms where DO-160, AEC-Q101, and IEC 61000-4-5 compliance are mandatory-not as general-purpose TVS diodes but as engineered surge "shunts" with validated thermal and electrical performance under extreme conditions.
FAQ
What is the clamping voltage of MPLAD36KP400CAE3 at its rated peak pulse current?
The MPLAD36KP400CAE3 has a maximum clamping voltage (VC) of 644 V at 50 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 circuitry during worst-case surge events. The MPLAD36KP400CAE3 maintains this clamping performance across its full operating temperature range.
Is MPLAD36KP400CAE3 qualified for automotive applications?
Yes, MPLAD36KP400CAE3 is qualified to AEC-Q101 for automotive use, including underhood environments subject to thermal cycling, vibration, and load dump transients. Its 400 V VWM and 36,000 W PPP rating make it suitable for 24 V commercial vehicle systems and hybrid/electric powertrain control units. The MPLAD36KP400CAE3 also supports optional MIL-PRF-19500 upscreening for enhanced reliability.
How does the PLAD package of MPLAD36KP400CAE3 improve thermal performance?
The PLAD package of MPLAD36KP400CAE3 uses a metal baseplate as the cathode terminal, providing a direct thermal path from the silicon die to the PCB copper or external heatsink. With a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W, the MPLAD36KP400CAE3 achieves superior heat dissipation compared to standard SMD packages like SMB or SMC-enabling sustained surge repetition and operation at elevated ambient temperatures without derating.
Does MPLAD36KP400CAE3 meet RTCA DO-160 lightning protection standards?
Yes, MPLAD36KP400CAE3 is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) Level 4 and Level 5, and Waveform 5A (40/120 μs) Level 4. Its bidirectional construction and 36,000 W PPP rating ensure compliance with aircraft-level surge immunity requirements. The MPLAD36KP400CAE3 is listed in the datasheet as qualified for these tests across its full VWM range.
What is the moisture sensitivity level (MSL) of MPLAD36KP400CAE3?
MPLAD36KP400CAE3 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it is not moisture-sensitive and requires no dry pack or baking prior to reflow soldering. This eliminates handling constraints during manufacturing and supports standard SMT assembly processes without special humidity controls. The MPLAD36KP400CAE3's void-free epoxy body contributes to this robust MSL rating.
MPLAD36KP400CAE3 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):
- 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:
- 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
MPLAD36KP400CAE3 FAQ
1.How can I place an order for MPLAD36KP400CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP400CAE3 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 reliable?
The price and inventory of MPLAD36KP400CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP400CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP400CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP400CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP400CAE3?
MPLAD36KP400CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP400CAE3 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?
For technical support, including MPLAD36KP400CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP400CAE3 requirements.
6.How does Aetrix verify that MPLAD36KP400CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP400CAE3 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 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP400CAE3?
All MPLAD36KP400CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP400CAE3, 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 part is unused and in its original packaging.
Return procedure for MPLAD36KP400CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP400CAE3 Tags
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