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Microchip Technology MPLAD36KP300A/TR
- Part No.:
- MPLAD36KP300A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP300A/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:5,344
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Product details
Overview
MPLAD36KP300A/TR from Microsemi (now Microchip) is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤483 V at 75 A peak impulse current, and features a 300 V working standoff voltage with <100 ps response time. It is qualified to AEC-Q101 and meets RTCA DO-160G Waveform 4 Level 5 pin injection requirements.
For engineers reviewing the MPLAD36KP300A/TR datasheet, MPLAD36KP300A/TR pinout, MPLAD36KP300A/TR application, or MPLAD36KP300A/TR equivalent, this device serves as a high-reliability, low-profile TVS for secondary lightning protection (IEC 61000-4-5), load dump suppression, and ESD/EFT hardening in safety-critical avionics and vehicle ECUs where thermal resistance (RθJC = 1.0 °C/W) and traceable lot screening are mandatory.
Technical Context
This unidirectional TVS operates in avalanche breakdown mode to clamp overvoltage transients before downstream circuitry sustains damage. Its PLAD package integrates a metal base acting as the cathode terminal, enabling direct thermal coupling to heatsinks and achieving RθJC = 1.0 °C/W - critical for multi-stroke surge handling per RTCA DO-160 Section 22.
It is characterized at 25 °C with IBR = 5 mA, VWM = 300 V (max), VBR = 333–369 V, and VC = 483 V at IPP = 75 A (10/1000 μs). Standby leakage ID ≤ 10 µA at VWM ensures minimal power loss in always-on systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W at 10/1000 μs - enables single-device protection against severe lightning-induced surges without cascaded stages. |
| Working Standoff Voltage | 300 V DC - matches nominal 270 V aircraft bus and 24 V automotive systems with ≥10% margin above peak operating voltage. |
| Clamping Voltage | 483 V at 75 A - limits transient voltage seen by protected ICs to safe levels during full-rated surge events. |
| Breakdown Voltage | 333–369 V at 5 mA - defines precise conduction onset threshold, ensuring reliable turn-on before system damage occurs. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows efficient heat transfer to PCB copper or external heatsink, supporting repeated surge duty cycles. |
| Response Time | <100 ps - guarantees sub-nanosecond reaction to fast-rising ESD and RFI transients. |
| AEC-Q101 Qualified | Yes - validated for automotive under-hood and powertrain applications requiring extended temperature and reliability assurance. |
Pinout & Package
The MPLAD36KP300A/TR uses the PLAD surface-mount package: a low-profile, void-free thermosetting epoxy body (UL94V-0) with a metal base serving as the cathode terminal. The anode is the top-side metallized pad. Total weight is ~1.7–2.0 g. Tape-and-reel packaging is indicated by the "/TR" suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and high-current return node; must be soldered to large copper pour or heatsink for thermal management. |
| Top Metallized Pad | Anode | Transient current entry point; connects to protected line (e.g., 270 V DC bus or alternator output). |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Surge Rating | Supports single-device compliance with RTCA DO-160G Section 22 multi-stroke lightning test without derating or parallel devices. |
| Low RθJC = 1.0 °C/W | Enables sustained operation under repetitive surge conditions typical in aircraft power distribution units. |
| AEC-Q101 Qualification | Validates robustness for automotive 12 V/24 V systems exposed to load dump, jump-start, and ISO 7637-2 pulses. |
| RoHS-compliant & Moisture Level 1 | Eliminates dry-pack requirement and supports standard reflow profiles (TSP = 260 °C), reducing manufacturing complexity. |
| Lot-traceable Wafer & Assembly | Provides full process traceability for aerospace programs requiring AS9100-compliant component sourcing. |
Applications
| Aircraft Power Distribution | Automotive Alternator Output Protection |
|---|---|
Use Scenario: Protecting 270 V DC main bus in commercial aircraft against lightning-induced surges per RTCA DO-160G Section 22. IC Role / Device Role / Timing Role: Primary transient clamping device placed at bus entry point to limit voltage excursion during multi-stroke events. Use Value: Enables compliance with Level 5 pin injection (Waveform 4) and eliminates need for external heatsinking due to RθJC = 1.0 °C/W. |
Use Scenario: Safeguarding engine control unit (ECU) inputs from alternator load dump transients in 24 V heavy-duty vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS shunting reverse-polarity and overvoltage spikes on battery feed lines. Use Value: Withstands 1500 A forward surge current (IFSM) and clamps to ≤483 V, preventing latch-up or gate oxide rupture in protected MOSFET drivers. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Secondary surge protection on DC link capacitors of variable-frequency drives exposed to switching transients and induced RFI. IC Role / Device Role / Timing Role: Fast-response clamping element placed after primary MOV-based protection to handle residual high-dV/dt edges. Use Value: Sub-100 ps response time captures fast-rising edges missed by slower protectors, preserving IGBT gate driver integrity. |
Use Scenario: Hardening 110 V DC signaling lines in railway signaling cabinets against EFT bursts per IEC 61000-4-4 and lightning coupling. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used in back-to-back configuration) for differential line protection. Use Value: 300 V VWM aligns with EN 50121-3-2 immunity requirements while maintaining ≤10 µA leakage for low-power sensor interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ300A | Lower 600 W rating, SMC package, RθJC = 12 °C/W, no AEC-Q101 or DO-160 qualification. | Suitable only for non-safety-critical consumer or industrial I/O protection; cannot meet aircraft multi-stroke requirements. | Select SMBJ300A only for cost-sensitive, low-energy applications where thermal cycling and surge repetition are not concerns. |
| SMCJ300A | 1500 W rating, same SMC package, higher VC = 488 V at 43.5 A, no lot traceability or upscreening options. | Limited to single-stroke protection in telecom or industrial controls; lacks RTCA DO-160G validation and thermal performance for aerospace. | Choose SMCJ300A when board space permits larger SMC footprint and qualification to MIL-PRF-19500 or DO-160 is unnecessary. |
Compared with SMBJ300A and SMCJ300A, the MPLAD36KP300A/TR delivers 24× higher peak power, 12× better thermal resistance, and certified qualification for aviation and automotive safety-critical use - making it irreplaceable where multi-stroke survivability and lot-level traceability are mandatory.
Availability
MPLAD36KP300A/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive ECU protection, and industrial motor drive DC link applications requiring stable component supply across long production lifecycles.
Supply support for MPLAD36KP300A/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 provider of high-reliability analog, mixed-signal, and power management semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP300A/TR belongs to Microsemi's high-power PLAD TVS family, engineered specifically for mission-critical surge protection in environments demanding RTCA DO-160, AEC-Q101, and IEC 61000-4-x compliance.
FAQ
What is the clamping voltage of the MPLAD36KP300A/TR at its rated peak pulse current?
The MPLAD36KP300A/TR has a maximum clamping voltage (VC) of 483 V when subjected to its rated peak pulse current (IPP) of 75 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 a full-rated surge event. Designers must ensure downstream components have voltage ratings exceeding 483 V to maintain functional safety.
Is the MPLAD36KP300A/TR suitable for bidirectional signal line protection?
No, the MPLAD36KP300A/TR is a unidirectional TVS diode, meaning it conducts only when the cathode is positive relative to the anode. For bidirectional protection, a CA-suffixed variant such as MPLAD36KP300CA must be used. Using the unidirectional MPLAD36KP300A/TR on AC or differential lines without proper polarity alignment risks permanent failure or ineffective clamping.
Does the MPLAD36KP300A/TR require a heatsink for continuous operation?
The MPLAD36KP300A/TR does not require an external heatsink for single-event surge handling, but its RθJC = 1.0 °C/W rating assumes direct thermal coupling to a substantial copper plane or heatsink. For repetitive surge duty (e.g., >0.05% duty factor), PCB copper area and thermal vias beneath the metal base are essential to prevent junction temperature exceedance beyond 150 °C. Refer to Figure 7 (Pad Layout) in the datasheet for recommended copper pour design.
What is the significance of the "/TR" suffix in MPLAD36KP300A/TR?
The "/TR" suffix in MPLAD36KP300A/TR indicates tape-and-reel packaging conforming to EIA-481-B standards, intended for automated SMT placement. This packaging format ensures consistent orientation, mechanical protection during handling, and compatibility with pick-and-place equipment. Bulk packaging is also available, but "/TR" is required for high-volume production lines relying on reel-fed feeders.
How does the MPLAD36KP300A/TR meet RTCA DO-160G Section 22 lightning requirements?
The MPLAD36KP300A/TR meets RTCA DO-160G Section 22 by delivering 36 kW peak pulse power at 10/1000 μs, sustaining multi-stroke testing without degradation, and exhibiting <100 ps response time to capture fast-rising waveforms. Its low RθJC and lot-traceable construction enable certification for Level 5 pin injection (Waveform 4) on 270 V aircraft buses - a requirement verified through third-party lab testing per the specification.
MPLAD36KP300A/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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP300A/TR FAQ
1.How can I place an order for MPLAD36KP300A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP300A/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 MPLAD36KP300A/TR reliable?
The price and inventory of MPLAD36KP300A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP300A/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP300A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP300A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP300A/TR?
MPLAD36KP300A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP300A/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 MPLAD36KP300A/TR?
For technical support, including MPLAD36KP300A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP300A/TR requirements.
6.How does Aetrix verify that MPLAD36KP300A/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP300A/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 MPLAD36KP300A/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP300A/TR?
All MPLAD36KP300A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP300A/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 MPLAD36KP300A/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP300A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP300A/TR Tags
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