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Microchip Technology MPLAD36KP150A/TR
- Part No.:
- MPLAD36KP150A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP150A/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:8,234
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Product details
Overview
MPLAD36KP150A/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 243 V at 149 A peak impulse current, and features a 150 V working standoff voltage with 167–185 V breakdown range - validated for RTCA DO-160 Section 22 multi-stroke lightning compliance.
For engineers reviewing the MPLAD36KP150A/TR datasheet, MPLAD36KP150A/TR pinout, MPLAD36KP150A/TR application, or MPLAD36KP150A/TR equivalent, key selection criteria include its 1.0 °C/W junction-to-case thermal resistance, <100 ps clamping response time, AEC-Q101 qualification, and suitability for secondary lightning protection per IEC 61000-4-5 with 42 Ω source impedance up to Class 5 (short distance).
Technical Context
This TVS diode operates in avalanche breakdown mode to divert high-current transients away from sensitive circuitry. Its PLAD package integrates a metal base acting as the cathode terminal, enabling low-inductance, high-current conduction paths and efficient heat transfer to the PCB copper pour or heatsink.
It is rated for continuous operation from –55 °C to +150 °C junction temperature, with thermal resistance junction-to-ambient of 50 °C/W on FR4 (1 oz Cu), and supports steady-state dissipation up to 504 W at 100 °C case temperature - critical for sustained load-dump scenarios in 24 V and 48 V vehicle systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W at 10/1000 μs waveform - enables robust protection against lightning-induced surges and automotive load dump events. |
| Working Standoff Voltage (VWM) | 150 V DC - matches nominal 125 V DC rail systems with margin for ripple and transients without leakage activation. |
| Clamping Voltage (VC) | 243 V at 149 A peak pulse current - defines maximum voltage seen by protected downstream ICs during surge event. |
| Breakdown Voltage (VBR) | 167–185 V at 5 mA test current - ensures reliable turn-on before VWM exceeds rating, minimizing false triggering. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows direct thermal coupling to heatsink or large copper area, essential for repetitive surge handling. |
| Clamping Response Time | <100 ps - guarantees sub-nanosecond reaction to fast-rising ESD and RFI-induced transients. |
| AEC-Q101 Qualified | Validated for automotive underhood applications including engine control units and battery management systems. |
Pinout & Package
The MPLAD36KP150A/TR uses the PLAD surface-mount package: a low-profile, thermally enhanced molded epoxy body with exposed metal cathode base (pin 1). The anode is connected to the top metallization via internal bond wire; polarity is marked by cathode stripe on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary current return path and thermal interface - must be soldered to ≥25 mm² copper pour or heatsink for rated power handling. |
| Top Metallization (Anode) | Anode | High-current input node - connects to protected line (e.g., 125 V DC bus); minimal trace inductance required for fast clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Surge Rating | Enables single-device protection against RTCA DO-160G Waveform 4 (6.4/69 μs) Level 4 and Level 5 lightning strikes. |
| Moisture Sensitivity Level 1 | No dry pack or baking required before reflow - simplifies SMT assembly and reduces manufacturing cost. |
| RoHS-compliant (e3) | Meets global environmental regulations without compromising surge performance or thermal reliability. |
| Lot-traceable Wafer Fabrication | Supports aerospace and defense supply chain requirements for full material and process traceability. |
| 100% Surge Tested | Each unit verified to withstand ≥90% of rated peak pulse current - ensures field reliability in safety-critical systems. |
Applications
| Aerospace Avionics Power Bus | Commercial Vehicle 24 V DC System |
|---|---|
Use Scenario: Protection of flight control computers and sensor interfaces against induced lightning currents per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient shunt device on 28 V DC distribution bus, clamping surges before they reach ARINC 429 transceivers and ADC front-ends. Use Value: Enables compliance with Level 5 pin-injection testing using Waveform 4 (6.4/69 μs) without derating or parallel devices. |
Use Scenario: Load dump suppression in heavy-duty truck alternator output circuits where voltage spikes exceed 120 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between alternator output and main fuse box to clamp 120 V–150 V transients within 100 ps. Use Value: Prevents damage to CAN FD gateways and telematics modules during ISO 7637-2 Pulse 5a events without requiring external heatsinking. |
| Industrial 48 V DC UPS Input | Railway Signaling Power Supply |
Use Scenario: Secondary surge protection on 48 V DC input stage of uninterruptible power supplies subjected to IEC 61000-4-5 Class 4 surges. IC Role / Device Role / Timing Role: Clamping element downstream of MOV-based primary protection, limiting let-through voltage to ≤250 V. Use Value: Reduces stress on downstream DC-DC controllers by limiting clamped voltage to 243 V at 149 A - well below 300 V absolute max ratings. |
Use Scenario: Protection of 110 V DC signaling power supplies in trackside cabinets exposed to induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Standoff-rated TVS on feed line to relay driver ICs, selected for 150 V VWM to accommodate 10% line tolerance and aging drift. Use Value: Maintains <10 µA standby leakage at 150 V, preventing false tripping in low-power fail-safe monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | Lower 600 W peak power rating, SMB package, 1.5x higher RθJA (75 °C/W), no AEC-Q101 qualification. | Suitable only for non-automotive, non-aerospace 150 V rail protection with infrequent, low-energy transients. | Select SMBJ150A only when surge energy is ≤10 J and thermal budget permits ambient-limited operation. |
| SMCJ150A | Same 150 V VWM, but 1500 W peak power, SMC package, RθJC = 2.5 °C/W, not DO-160 tested. | Applicable for industrial IEC 61000-4-5 Class 3 protection, but insufficient for aircraft lightning standards. | Choose SMCJ150A for cost-sensitive industrial designs where 36 kW capability and aerospace certification are unnecessary. |
Compared with SMBJ150A and SMCJ150A, the MPLAD36KP150A/TR provides 24× and 24× higher peak power respectively, 2.5× lower thermal resistance, and certified compliance with RTCA DO-160G - making it the only option for mission-critical 150 V rail protection in aviation and commercial vehicle platforms.
Availability
MPLAD36KP150A/TR is available at Aetrix Electronics and suitable for aerospace avionics, commercial vehicle electronics, and industrial 48 V DC power systems requiring stable component supply, long-term lifecycle support, and certified surge performance.
Supply support for MPLAD36KP150A/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 power management solutions for aerospace, defense, and industrial markets.
The MPLAD36KP150A/TR belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump immunity in harsh-environment electronic systems.
FAQ
What is the clamping voltage of MPLAD36KP150A/TR at its rated peak pulse current?
The MPLAD36KP150A/TR has a maximum clamping voltage (VC) of 243 V when subjected to its rated peak pulse current of 149 A at 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. The MPLAD36KP150A/TR maintains this clamping performance across its operating temperature range of –55 °C to +150 °C.
Is MPLAD36KP150A/TR qualified for automotive applications?
Yes, the MPLAD36KP150A/TR is AEC-Q101 qualified, confirming its reliability for use in automotive underhood and powertrain environments. It meets stress test requirements including high-temperature reverse bias, temperature cycling, and surge endurance - making it suitable for 24 V and 48 V vehicle systems such as battery management, ADAS power supplies, and gateway ECUs. The MPLAD36KP150A/TR also supports load dump protection per ISO 7637-2 Pulse 5a.
How does the PLAD package of MPLAD36KP150A/TR improve thermal performance?
The PLAD package of the MPLAD36KP150A/TR features an exposed metal cathode base that serves as both the electrical terminal and primary thermal path. With a junction-to-case thermal resistance of just 1.0 °C/W, it enables direct conduction of heat into PCB copper pours or external heatsinks. This design allows the MPLAD36KP150A/TR to sustain repetitive surges without thermal runaway - a critical advantage over smaller SMC/SMB packages with RθJC > 2.0 °C/W.
Can MPLAD36KP150A/TR be used for bidirectional surge protection?
No, the MPLAD36KP150A/TR is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only in reverse-bias avalanche mode and blocks forward voltage up to 4.0 V at 500 A. For bidirectional protection, Microsemi offers the MPLAD36KP150CA/TR variant, which provides symmetrical clamping for AC-coupled or floating signal lines. Using MPLAD36KP150A/TR in bidirectional configurations risks forward conduction failure and permanent damage.
What standards does MPLAD36KP150A/TR meet for lightning protection?
The MPLAD36KP150A/TR is explicitly validated for RTCA DO-160G Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) Level 4 and Level 5 pin injection. It also supports secondary lightning protection per IEC 61000-4-5 with 42 Ω source impedance up to Class 5 (short distance) and Class 4 with 12 Ω and 2 Ω sources. These certifications are documented in the official Microsemi datasheet Revision B for the MPLAD36KP150A/TR.
MPLAD36KP150A/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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 149A
- 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
MPLAD36KP150A/TR FAQ
1.How can I place an order for MPLAD36KP150A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP150A/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 MPLAD36KP150A/TR reliable?
The price and inventory of MPLAD36KP150A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP150A/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP150A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP150A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP150A/TR?
MPLAD36KP150A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP150A/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 MPLAD36KP150A/TR?
For technical support, including MPLAD36KP150A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP150A/TR requirements.
6.How does Aetrix verify that MPLAD36KP150A/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP150A/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 MPLAD36KP150A/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP150A/TR?
All MPLAD36KP150A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP150A/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 MPLAD36KP150A/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP150A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP150A/TR Tags
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