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Microchip Technology MPLAD36KP400AE3/TR
- Part No.:
- MPLAD36KP400AE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP400AE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:9,020
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Product details
Overview
MPLAD36KP400AE3/TR from Microsemi (now Microchip) is a unidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 400 V working standoff voltage (VWM), 444–492 V breakdown voltage (VBR), and 644 V clamping voltage (VC) at 56 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 MPLAD36KP400AE3/TR datasheet, MPLAD36KP400AE3/TR pinout, MPLAD36KP400AE3/TR application, or MPLAD36KP400AE3/TR equivalent, key selection criteria include verified 400 V VWM, sub-100 ps response time, 1.0 °C/W junction-to-case thermal resistance, AEC-Q101 qualification, and RoHS-compliant matte-tin plating - all critical for high-reliability aerospace and automotive load dump protection.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transients above its VWM, delivering precise voltage limiting with 644 V clamping at 56 A (10/1000 μs). Its metal-base PLAD package provides direct thermal path to PCB copper, enabling 50 °C/W junction-to-ambient dissipation on FR4 with recommended pad layout.
The device features <100 ps response time (unidirectional), 10 µA max standby current at 400 V, and temperature coefficient of breakdown voltage ≤ 493 mV/°C - ensuring stable clamping performance across –55 °C to +150 °C operating range while meeting RTCA DO-160G Waveform 4 and 5A pin-injection requirements up to Level 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 400 V - Maximum continuous DC or repetitive peak reverse voltage before conduction begins; sets minimum system operating margin. |
| VBR | 444–492 V at 5 mA - Confirmed breakdown threshold defining turn-on precision; ensures predictable clamping onset. |
| VC | 644 V at 56 A (10/1000 μs) - Clamped voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| PPP | 36,000 W - Peak pulse power handling capability; enables single-device protection against multi-stroke lightning events. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; allows direct heatsinking via metal base for sustained energy absorption. |
| IPP | 56 A - Maximum non-repetitive peak impulse current; defines surge current capacity under standardized waveform. |
| TJ | –55 to +150 °C - Operating junction temperature range; supports deployment in engine bay and avionics bays without derating. |
Pinout & Package
The MPLAD36KP400AE3/TR uses the PLAD surface-mount package with a metal base acting as the cathode terminal. The anode is accessible via the top-side metallization. This low-profile thermally optimized construction minimizes thermal resistance and enables high-power transient suppression in space-constrained layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base | Cathode | Primary thermal and electrical return path; must be soldered to large copper pour for heat dissipation and low-inductance grounding. |
| Top Metallization | Anode | High-current input node for transient energy; connects to line being protected via minimal trace length to reduce inductance. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW peak pulse rating | Enables single-device compliance with RTCA DO-160 Section 22 multi-stroke lightning test without parallel staging. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain and chassis systems subject to harsh thermal and vibration environments. |
| 1.0 °C/W RθJC | Allows >90% of surge energy to conduct directly into PCB copper, reducing junction temperature rise during repeated surges. |
| RoHS-compliant e3 marking | Confirms matte-tin plating meets JEDEC J-STD-020D.1 moisture sensitivity Level 1 - no dry pack required pre-reflow. |
| <100 ps response time | Ensures clamping activation prior to propagation of fast-rising transients (<1 ns edge rates), protecting sensitive analog front-ends. |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC aircraft bus inputs against lightning-induced surges per RTCA DO-160G Section 22 Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). IC Role / Device Role / Timing Role: Primary clamping element placed at board-level entry point to limit transient overvoltage before it reaches DC-DC converters and microcontrollers. Use Value: Enables Level 4 pin-injection compliance up to 400 V VWM, eliminating need for cascaded TVS stages and reducing BOM count. | Use Scenario: Load dump protection on 12 V battery-fed ECU power rails per ISO 7637-2 Pulse 5a (110 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional shunt protector that conducts surge current to ground when battery voltage exceeds 400 V due to alternator field collapse. Use Value: Withstands 36,000 W pulses without degradation, maintaining clamping integrity across 1000+ surge cycles per AEC-Q101 stress testing. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Secondary protection on 400 V DC link of variable-frequency drives exposed to switching transients from IGBT commutation. IC Role / Device Role / Timing Role: Fast-response crowbar device that clamps voltage spikes exceeding VWM to prevent IGBT gate oxide damage and capacitor overvoltage failure. Use Value: 644 V clamping at 56 A limits stress on 600 V-rated bus capacitors and ensures safe operation within 10% margin of rated voltage. | Use Scenario: Surge protection for 24 V signaling lines in train control systems subjected to IEC 61000-4-5 42 Ω source impedance Class 4 surges (4 kV). IC Role / Device Role / Timing Role: Standoff-rated protector placed between signal conditioner IC and field wiring to absorb induced common-mode transients. Use Value: 400 V VWM accommodates elevated rail voltages during brownout conditions while still providing 240 V headroom for clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400A | Lower 600 W PPP rating; SMB package with 35 °C/W RθJA; 648 V VC at 55.6 A. | Not suitable for RTCA DO-160 multi-stroke lightning; limited to single-event industrial surges. | Select only for cost-sensitive, low-energy applications where 36 kW capability is unnecessary. |
| SMCJ400A | 3,000 W PPP; SMC package; 648 V VC at 55.6 A; RθJC ≈ 2.5 °C/W. | Insufficient for DO-160 Section 22; usable for ISO 7637-2 Pulse 5a with derated lifetime. | Choose when board space permits larger SMC footprint and full 36 kW rating is not mandated by certification. |
Compared with SMBJ400A and SMCJ400A, the MPLAD36KP400AE3/TR delivers 12× and 12× higher peak power handling respectively, with 2.5× lower thermal resistance - making it the only option qualified for certified multi-stroke lightning protection in avionics and high-end automotive ECUs.
Availability
MPLAD36KP400AE3/TR is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and certified surge robustness.
Supply support for MPLAD36KP400AE3/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 - designs high-reliability semiconductor solutions for aerospace, defense, and industrial markets, with emphasis on radiation-hardened ICs, timing devices, and power protection components.
The MPLAD36KP400AE3/TR belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for certified lightning and load-dump protection where multi-kilowatt transient energy absorption and thermal stability are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP400AE3/TR at its rated peak pulse current?
The MPLAD36KP400AE3/TR has a maximum clamping voltage (VC) of 644 V when subjected to its rated peak pulse current of 56 A under the 10/1000 μs waveform. This value is measured per standard test conditions in the official datasheet and defines the upper voltage limit imposed on protected circuitry during surge events.
Is MPLAD36KP400AE3/TR RoHS-compliant and what does the 'e3' suffix indicate?
Yes, MPLAD36KP400AE3/TR is RoHS-compliant, as confirmed by the 'e3' suffix in its part number. This denotes annealed matte-tin plating per JEDEC J-STD-020D.1, qualifying it for moisture sensitivity Level 1 - meaning no dry-packaging or baking is required prior to reflow soldering.
Does MPLAD36KP400AE3/TR meet AEC-Q101 requirements for automotive use?
Yes, MPLAD36KP400AE3/TR is explicitly AEC-Q101 qualified, validating its reliability for automotive powertrain and chassis applications. This includes passing stress tests for temperature cycling, humidity bias, and surge endurance - confirming suitability for engine control units and battery management systems exposed to harsh environmental conditions.
What is the thermal resistance from junction to case (RθJC) for MPLAD36KP400AE3/TR and why does it matter?
The MPLAD36KP400AE3/TR has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W. This low value enables efficient heat transfer from the silicon die through the metal base into the PCB copper, which is essential for sustaining repeated 36,000 W transients without thermal runaway or parametric shift.
Can MPLAD36KP400AE3/TR be used for bidirectional surge protection?
No, MPLAD36KP400AE3/TR is unidirectional, as indicated by the 'A' suffix (not 'CA'). It conducts only during reverse-biased overvoltage events. For bidirectional protection, Microsemi offers the MPLAD36KP400CA variant - which shares the same VWM, VC, and PPP but adds symmetrical clamping for AC-coupled or floating-line applications.
MPLAD36KP400AE3/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:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP400AE3/TR FAQ
1.How can I place an order for MPLAD36KP400AE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP400AE3/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 MPLAD36KP400AE3/TR reliable?
The price and inventory of MPLAD36KP400AE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP400AE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP400AE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP400AE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP400AE3/TR?
MPLAD36KP400AE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP400AE3/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 MPLAD36KP400AE3/TR?
For technical support, including MPLAD36KP400AE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP400AE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP400AE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP400AE3/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 MPLAD36KP400AE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP400AE3/TR?
All MPLAD36KP400AE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP400AE3/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 MPLAD36KP400AE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP400AE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP400AE3/TR Tags
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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