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Microchip Technology MPLAD36KP75AE3
- Part No.:
- MPLAD36KP75AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP75AE3.pdf
- Description:
- TVS DIODE 75VWM 121VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,445
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Product details
Overview
MPLAD36KP75AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 75 V reverse standoff voltage (VWM), clamps to ≤121 V at 298 A peak pulse current (IPP), and operates across –55 °C to +150 °C junction temperature - deployed in lightning protection circuits for avionics per RTCA DO-160 Section 22.
For engineers reviewing the MPLAD36KP75AE3 datasheet, MPLAD36KP75AE3 pinout, MPLAD36KP75AE3 application, or MPLAD36KP75AE3 equivalent, this device is selected for high-reliability secondary lightning protection (IEC 61000-4-5 Class 4 with 12 Ω source), pin-injection immunity (RTCA DO-160F Waveform 4 Level 5), and ESD/EFT robustness per IEC 61000-4-2/4-4 - requiring precise VWM ≥ system peak operating voltage and thermal-aware PCB layout on FR4 with recommended pad dimensions.
Technical Context
This TVS diode uses silicon avalanche junction technology optimized for low clamping ratio (VC/V(BR) ≈ 1.43) and fast response (<5 ns rise time). Its metal-base package provides direct thermal path to PCB copper, achieving 1.0 °C/W junction-to-case thermal resistance when mounted per spec.
It is rated for 100% surge testing per lot, supports MIL-PRF-19500 upscreening options (MXL level), and complies with AEC-Q101 stress requirements - confirming suitability for automotive load dump and aircraft secondary protection where multi-stroke survivability and traceable wafer/assembly lots are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains single-stroke lightning surges without failure under specified mounting and duty cycle (≤0.05%) |
| Reverse Standoff Voltage (VWM) | 75 V - maximum continuous DC or peak AC voltage the device blocks without conduction; must exceed system operating peak |
| Breakdown Voltage (V(BR)) | 83.3–92.1 V @ 5 mA - defined threshold where avalanche conduction begins; ensures reliable turn-on before downstream component damage |
| Max Clamping Voltage (VC) | 121 V @ 298 A IPP - upper limit of voltage seen by protected circuit during worst-case surge; determines safe margin for IC voltage ratings |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or copper pour; critical for repetitive surge handling and steady-state derating |
| Operating Temperature Range | –55 °C to +150 °C - validated performance across extended industrial and aerospace ambient conditions without parameter drift |
| Moisture Sensitivity Level | Level 1 (IPC/JEDEC J-STD-020B) - no dry pack or baking required prior to reflow; simplifies SMT manufacturing flow |
Pinout & Package
Package: PLAD - surface-mount, void-free thermosetting epoxy body (UL94V-0), metal base cathode termination, RoHS-compliant matte-tin plating. Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ~1.85 g. Cathode is the metal base (bottom side); anode is top-side metallization.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top metallization) | Surge current entry point for unidirectional operation | Connected to line/pin being protected; conducts during positive transients relative to cathode reference |
| Cathode (metal base) | Surge current return path and thermal interface | Must be soldered to large copper area for thermal dissipation; serves as system ground or common reference plane |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW peak pulse rating | Enables compliance with RTCA DO-160 Section 22 multi-stroke lightning test without derating or parallel devices |
| Low-profile PLAD package with metal base | Reduces thermal resistance to PCB (RθJC = 1.0 °C/W), supporting higher surge repetition rates than standard SMB/SMA packages |
| Full-lot surge testing & traceability | Guarantees every production lot meets 36 kW PPP specification; wafer and assembly lot codes enable field failure root-cause analysis |
| AEC-Q101 qualified | Validates reliability for automotive load dump (ISO 7637-2 Pulse 5a/b) and under-hood temperature cycling (-40 °C to +125 °C) |
| RoHS-compliant e3 marking | Meets EU Directive 2011/65/EU; matte-tin plating ensures compatibility with Pb-free reflow profiles (260 °C, 10 s) |
Applications
| Aerospace Avionics Protection | Automotive Power Distribution |
|---|---|
Use Scenario: Protecting ARINC 429 data lines and power inputs in flight control computers against lightning-induced transients per RTCA DO-160F Section 22. IC Role / Device Role / Timing Role: Primary secondary surge clamp on 28 V DC bus and signal lines; absorbs energy before it reaches interface ICs or microcontrollers. Use Value: Enables Level 5 pin-injection protection (Waveform 4) and Class 4 IEC 61000-4-5 compliance with 12 Ω source impedance - eliminating need for external series impedance or cascaded TVS stages. |
Use Scenario: Safeguarding battery management system (BMS) inputs and gate drivers in 12 V/24 V vehicle architectures during load dump events (ISO 7637-2 Pulse 5). IC Role / Device Role / Timing Role: High-power transient shunt on main power rail; clamps voltage within safe operating range of MOSFETs and analog front-ends. Use Value: Withstands 1500 A forward surge (IFSM) and maintains <121 V clamping at 298 A, preventing latch-up or overvoltage shutdown in safety-critical ECUs. |
| Industrial Motor Drive Inputs | Railway Signaling Power Supplies |
Use Scenario: Shielding PLC I/O modules and servo drive power inputs from switching transients generated by contactors and VFDs. IC Role / Device Role / Timing Role: Front-end surge suppression on AC/DC converter inputs; limits voltage overshoot during inductive kickback. Use Value: 36 kW rating handles repetitive 10/1000 μs surges at ≤0.05% duty cycle without degradation - extending service life beyond standard 6.8 kW TVS alternatives. |
Use Scenario: Securing 72 V DC signaling power supplies in train control units against induced surges from traction motor commutation and EMI coupling. IC Role / Device Role / Timing Role: Secondary protection stage after primary gas discharge tube (GDT); provides fast-response clamping after GDT arc initiation. Use Value: Achieves IEC 61000-4-5 Class 3 compliance with 2 Ω source impedance, enabling compact, low-inductance PCB layout without ferrite beads or additional filtering. |
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 PPP (600 W), SMA package, RθJA = 50 °C/W, no metal base thermal path | Suitable only for low-energy transients (IEC 61000-4-2/4-4), not DO-160 or load dump | Select only for cost-sensitive consumer-grade designs with <1 kV surge exposure |
| SMCJ75A | Higher PPP (1500 W), SMC package, RθJA = 25 °C/W, no lot-level surge testing | Meets basic ISO 7637-2 Pulse 1/2 but lacks DO-160 multi-stroke validation and AEC-Q101 full qualification | Use where moderate surge immunity suffices and traceability/extended temp range are non-critical |
Compared with SMBJ75A and SMCJ75A, the MPLAD36KP75AE3 delivers 24× and 24× higher peak pulse power respectively, integrates a metal-base thermal interface for sustained surge handling, and carries full AEC-Q101 and RTCA DO-160 certification - making it the sole option for certified aerospace and high-reliability automotive deployments.
Availability
MPLAD36KP75AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive power distribution, and industrial motor drive applications requiring stable component supply, long-term lifecycle support, and certified surge immunity.
Supply support for MPLAD36KP75AE3 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MPLAD36KP75AE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for certified lightning and load dump protection where multi-stroke survivability, thermal robustness, and lot-level surge validation are mandatory.
FAQ
What is the clamping voltage of the MPLAD36KP75AE3 at its rated peak pulse current?
The MPLAD36KP75AE3 has a maximum clamping voltage (VC) of 121 V at 298 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 MPLAD36KP75AE3 maintains this clamping performance across its full operating temperature range.
Is the MPLAD36KP75AE3 suitable for automotive load dump protection per ISO 7637-2?
Yes, the MPLAD36KP75AE3 is AEC-Q101 qualified and rated for 1500 A forward surge current (IFSM), making it suitable for ISO 7637-2 Pulse 5a/b load dump protection in 12 V and 24 V automotive systems. Its 75 V VWM aligns with nominal 24 V bus systems, and its 121 V clamping voltage ensures downstream components remain within safe operating limits. The MPLAD36KP75AE3 is explicitly referenced in Microsemi documentation for this use case.
How does the PLAD package of the MPLAD36KP75AE3 improve thermal performance compared to standard SMC or SMB packages?
The MPLAD package uses a metal base as the cathode terminal, providing a direct thermal conduction path from the die to the PCB copper pour. With a junction-to-case thermal resistance (RθJC) of 1.0 °C/W - versus >5 °C/W for typical SMC packages - the MPLAD36KP75AE3 dissipates heat more efficiently during repetitive surges. This allows higher duty-cycle operation and reduces risk of thermal runaway. The MPLAD36KP75AE3 requires no heatsink for single-event protection but benefits from large copper areas for multi-stroke applications.
Does the MPLAD36KP75AE3 meet RTCA DO-160 Section 22 lightning protection requirements?
Yes, the MPLAD36KP75AE3 is specifically designed and tested to meet RTCA DO-160 Section 22 for multi-stroke lightning protection in aircraft systems. It achieves Level 5 pin-injection immunity for Waveform 4 (6.4/69 μs) and supports Class 4 secondary lightning protection with 12 Ω source impedance. These capabilities are documented in the RF01216 datasheet and confirmed via lot-level surge testing - a key differentiator of the MPLAD36KP75AE3.
What is the polarity configuration and marking convention for the MPLAD36KP75AE3?
The MPLAD36KP75AE3 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). Its cathode is the metal base (bottom side), and the anode is the top-side metallization. Polarity is marked on the body per Microsemi's standard - no separate symbol is used since the metal base itself identifies the cathode. This configuration ensures correct orientation during placement, and the MPLAD36KP75AE3 must be mounted with the metal base soldered to the designated ground or return plane.
MPLAD36KP75AE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- 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:
- 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
MPLAD36KP75AE3 FAQ
1.How can I place an order for MPLAD36KP75AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP75AE3 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 reliable?
The price and inventory of MPLAD36KP75AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP75AE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP75AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP75AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP75AE3?
MPLAD36KP75AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP75AE3 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?
For technical support, including MPLAD36KP75AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP75AE3 requirements.
6.How does Aetrix verify that MPLAD36KP75AE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP75AE3 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 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP75AE3?
All MPLAD36KP75AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP75AE3, 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 part is unused and in its original packaging.
Return procedure for MPLAD36KP75AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP75AE3 Tags
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