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Microchip Technology MPLAD36KP75AE3/TR
- Part No.:
- MPLAD36KP75AE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP75AE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:9,842
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Product details
Overview
MPLAD36KP75AE3/TR from Microchip (formerly Microsemi) 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 ≤121 V at 298 A, and features a 75 V working standoff voltage (VWM) with 83.3–92.1 V breakdown range (VBR). It is AEC-Q101 qualified and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP75AE3/TR datasheet, MPLAD36KP75AE3/TR pinout, MPLAD36KP75AE3/TR application, or MPLAD36KP75AE3/TR equivalent, this device is selected for high-reliability DC bus protection where low thermal resistance (RθJC = 1.0 °C/W), fast clamping (<100 ps), and RoHS-compliant matte-tin terminations are critical - especially in avionics power distribution and 24/48 V vehicle systems.
Technical Context
This TVS diode operates in avalanche breakdown mode to divert high-current transients away from sensitive downstream circuitry. Its PLAD package integrates a metal base acting as the cathode terminal, enabling direct thermal coupling to heatsinks or PCB copper planes. The device is characterized for 10/1000 μs waveform compliance and supports IEC 61000-4-5 Class 5 secondary lightning protection (42 Ω source) up to 75 V VWM.
It exhibits a temperature coefficient of breakdown voltage (αV(BR)) of +98 mV/°C and maintains stable standby current (ID ≤ 10 µA at VWM) across –55 °C to +150 °C junction temperature. Derating is required above 25 °C ambient, with steady-state power dissipation dropping from 2.51 W at TA = 25 °C to 504 W at TC = 100 °C under controlled case temperature conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous DC or repetitive peak reverse voltage the device blocks without conduction. |
| VBR @ IBR | 83.3–92.1 V at 5 mA - Confirmed breakdown threshold range ensuring reliable turn-on before system overvoltage damage. |
| VC @ IPP | 121 V at 298 A - Clamping voltage during full-rated 10/1000 μs surge, defining maximum stress on protected ICs. |
| PPP | 36,000 W - Peak pulse power handling capacity, enabling robust protection against lightning-induced surges. |
| RθJC | 1.0 °C/W - Low junction-to-case thermal resistance allows efficient heat transfer to external heatsink or PCB copper. |
| ID @ VWM | ≤10 µA - Minimal leakage current ensures negligible power loss and no interference in high-impedance sensing circuits. |
| TJ Range | –55 °C to +150 °C - Full operational junction temperature range validated for harsh-environment deployment. |
Pinout & Package
The MPLAD36KP75AE3/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 accessible via the top-side metallized pad. Total weight is ~1.7–2.0 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary current return path and thermal interface; must be soldered to large copper pour or heatsink for RθJC = 1.0 °C/W performance. |
| Top Metallized Pad | Anode | Input connection point for transient energy; layout must minimize trace inductance to preserve <100 ps response. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Pulse Power Rating | Enables single-device protection against severe lightning-induced surges per RTCA DO-160 Section 22 without parallel staging. |
| AEC-Q101 Qualification | Validates reliability for automotive power electronics including engine control units and battery management systems. |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints, simplifying SMT assembly logistics. |
| RoHS-Compliant Matte-Tin Plating | Ensures solderability per MIL-STD-750 Method 2026 and compatibility with lead-free reflow profiles up to 260 °C. |
| Wafer & Assembly Lot Traceability | Supports full supply chain auditability required for aerospace and defense programs. |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting 28 V DC distribution buses in commercial aircraft avionics bays from multi-stroke lightning events per RTCA DO-160G Waveform 4 and 5A. IC Role / Device Role / Timing Role: Primary clamping element placed at bus entry point to limit transient overvoltage to <121 V during 298 A surges. Use Value: Eliminates need for redundant TVS stages while meeting Class 5 pin-injection immunity with 75 V standoff margin over nominal 28 V rail. | Use Scenario: Safeguarding 12 V/24 V automotive ECUs during alternator load dump events (ISO 7637-2 Pulse 5a/b). IC Role / Device Role / Timing Role: Unidirectional TVS connected between battery rail and ground to clamp voltage spikes up to 120 V. Use Value: Withstands 36 kW pulses and provides <100 ps response, preventing latch-up or gate oxide damage in microcontrollers and CAN transceivers. |
| Industrial Motor Drive DC Bus | Renewable Energy Inverter Input |
Use Scenario: Shielding IGBT gate drivers and current sensors on 400 V DC bus lines in variable-frequency drives from switching-induced transients. IC Role / Device Role / Timing Role: High-power TVS placed across DC link capacitors to absorb regenerative energy spikes during rapid deceleration. Use Value: 1.0 °C/W thermal resistance enables direct mounting to busbar heatsink, sustaining repeated 298 A surges without thermal runaway. | Use Scenario: Protecting MPPT controller inputs in solar inverters exposed to induced surges from nearby lightning strikes on PV arrays. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), clamping residual transients to safe levels for analog front-end circuitry. Use Value: 75 V VWM matches typical string open-circuit voltage (VOC) derating, while 121 V clamping prevents damage to precision shunt regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | Lower peak power (600 W), smaller SMB package, higher RθJA (95 °C/W), no AEC-Q101 qualification. | Suitable only for low-energy ESD/EFT protection; cannot meet DO-160 Section 22 or ISO 7637-2 Pulse 5. | Select SMBJ75A only for cost-sensitive consumer applications with sub-100 A surge requirements. |
| SMCJ75A | Higher peak power (1500 W) than SMBJ but still 24× lower than MPLAD36KP75AE3/TR; SMC package; RθJC = 2.5 °C/W. | Acceptable for basic automotive load dump in non-safety-critical modules; insufficient for multi-stroke lightning testing. | Choose SMCJ75A when board space is constrained but 36 kW rating is not mandated by system-level standards. |
Compared with SMBJ75A and SMCJ75A, the MPLAD36KP75AE3/TR delivers 24× and 24× greater peak pulse power respectively, with superior thermal management (RθJC = 1.0 °C/W) and formal AEC-Q101 and DO-160 qualification - making it the only option for certified aerospace and high-end automotive power rail protection.
Availability
MPLAD36KP75AE3/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive DC bus applications requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP75AE3/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 manufactures high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP75AE3/TR belongs to Microchip's high-power PLAD TVS family, engineered specifically for mission-critical surge protection where multi-kilowatt pulse handling, low thermal resistance, and aviation-grade qualification are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP75AE3/TR at its rated peak pulse current?
The MPLAD36KP75AE3/TR has a maximum clamping voltage (VC) of 121 V when subjected to its rated peak pulse current (IPP) of 298 A under the standard 10/1000 μs waveform. This value is measured per test condition specified in Table 4 of the datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. Maintaining VC ≤ 121 V ensures compatibility with 100 V-rated downstream components.
Is MPLAD36KP75AE3/TR suitable for bidirectional signal line protection?
No, MPLAD36KP75AE3/TR is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only during reverse-biased overvoltage events and blocks forward current. For bidirectional AC or data-line protection, a part with the "CA" suffix - such as MPLAD36KP75CAE3/TR - would be required. Using MPLAD36KP75AE3/TR on bidirectional lines risks forward conduction and potential damage during normal signal swings.
Does MPLAD36KP75AE3/TR require special PCB layout considerations?
Yes, MPLAD36KP75AE3/TR demands optimized thermal and electrical layout: the metal base (cathode) must be soldered to a large, low-thermal-resistance copper area or heatsink to achieve the specified RθJC = 1.0 °C/W; anode traces must be short and wide to minimize inductance and preserve <100 ps response time; and the recommended pad layout from Figure 7 of the datasheet must be followed to ensure mechanical reliability and thermal performance.
What industry standards does MPLAD36KP75AE3/TR comply with?
MPLAD36KP75AE3/TR is explicitly qualified to AEC-Q101 for automotive use and validated for RTCA DO-160 Section 22 multi-stroke lightning testing. It also supports IEC 61000-4-5 Class 5 secondary lightning protection (42 Ω source) and IEC 61000-4-2/4-4 ESD/EFT immunity. Compliance is confirmed in Sections 1.1 and 1.2 of the datasheet - no extrapolation or inference is needed.
How does the temperature coefficient affect MPLAD36KP75AE3/TR's breakdown voltage?
The MPLAD36KP75AE3/TR has a positive temperature coefficient of breakdown voltage (αV(BR)) of +98 mV/°C, meaning VBR increases linearly with junction temperature. At 150 °C, VBR rises by ~12.3 V above its 25 °C value (83.3–92.1 V), extending the safe operating margin above VWM but requiring verification that clamping remains within system limits across the full –55 °C to +150 °C range.
MPLAD36KP75AE3/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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 298A
- 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
MPLAD36KP75AE3/TR FAQ
1.How can I place an order for MPLAD36KP75AE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP75AE3/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 MPLAD36KP75AE3/TR reliable?
The price and inventory of MPLAD36KP75AE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP75AE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP75AE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP75AE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP75AE3/TR?
MPLAD36KP75AE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP75AE3/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 MPLAD36KP75AE3/TR?
For technical support, including MPLAD36KP75AE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP75AE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP75AE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP75AE3/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 MPLAD36KP75AE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP75AE3/TR?
All MPLAD36KP75AE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP75AE3/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 MPLAD36KP75AE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP75AE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP75AE3/TR Tags
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