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Microchip Technology MPLAD36KP75CA
- Part No.:
- MPLAD36KP75CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP75CA.pdf
- Description:
- TVS DIODE 75VWM 121VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,189
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Product details
Overview
MPLAD36KP75CA from Microsemi is a bidirectional 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 meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP75CA datasheet, MPLAD36KP75CA pinout, MPLAD36KP75CA application, or MPLAD36KP75CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin-injection immunity per RTCA/DO-160F Waveform 4 & 5A, and high-reliability ESD/EFT suppression in safety-critical avionics and vehicle ECUs.
Technical Context
This TVS operates as a silicon avalanche diode with bidirectional clamping symmetry, enabling protection against both positive and negative transients without polarity constraints. Its low thermal resistance (RθJC = 1.0 °C/W) and void-free UL94V-0 epoxy package support sustained multi-pulse operation under RTCA DO-160-compliant duty cycles ≤0.05%.
It is characterized by a breakdown voltage range of 83.3–92.1 V at 5 mA, a maximum clamping voltage of 121 V at 298 A, and a temperature coefficient of breakdown voltage (αV(BR)) of +90 mV/°C - enabling predictable derating across −55°C to +150°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced surges without failure |
| Reverse Standoff Voltage (VWM) | 75 V - sets maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 83.3–92.1 V @ 5 mA - defines precise avalanche onset threshold for bidirectional conduction |
| Clamping Voltage (VC) | ≤121 V @ 298 A IPP - limits downstream circuit stress during worst-case surge events |
| Peak Pulse Current (IPP) | 298 A @ 10/1000 μs - quantifies maximum transient current the device safely diverts |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or heatsink for multi-stroke reliability |
| Operating Temperature Range | −55°C to +150°C - supports deployment in engine bays, flight control units, and outdoor infrastructure |
Pinout & Package
Package: PLAD (Plastic Leaded Anodeless Device) - surface-mount, metal-base thermally enhanced package with void-free UL94V-0 epoxy body; dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H); weight: ~1.7–2.0 g; polarity: bidirectional - no anode/cathode distinction; metal base serves as common terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Top-side marked side) | Anode/Cathode (bidirectional) | Electrically symmetric - interchangeable connection point for AC or bipolar transient paths |
| Terminal 2 (Metal base / bottom) | Common reference / thermal path | Primary heat sink interface; must be soldered to large copper pour for RθJC = 1.0 °C/W performance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC lines, differential buses, or floating references without polarity concerns |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for Level 4 (6.4/69 μs) and Level 5 (40/120 μs) pin-injection immunity in avionics I/O interfaces |
| IEC 61000-4-5 secondary lightning protection | Qualified across Class 1–5 with 42 Ω, 12 Ω, and 2 Ω source impedances - covers diverse system impedance profiles |
| MIL-PRF-19500 upscreening option | Supports high-reliability screening (M, MA, MX, MXL levels) for defense and space-grade programs |
| AEC-Q101 qualified | Meets automotive-grade stress testing for under-hood and powertrain applications requiring long-term surge robustness |
Applications
| Aircraft Flight Control Systems | Automotive Engine Control Units |
|---|---|
|
Use Scenario: Protection of ARINC 429 data lines and sensor inputs against lightning-induced transients during takeoff/landing. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry to clamp fast-rising edge transients before reaching FPGA or microcontroller I/O. Use Value: Meets RTCA DO-160 Section 22 multi-stroke requirement with ≤121 V clamping, preventing latch-up or damage to 3.3 V/5 V logic interfaces. |
Use Scenario: Guarding 12 V power rails and CAN transceiver lines in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary surge diverter on main power input, coordinated with upstream fuses and downstream DC-DC converters. Use Value: Withstands 36 kW surges while maintaining <10 μA standby current at 75 V, ensuring zero quiescent power penalty during normal operation. |
| Industrial Motor Drive Gate Drivers | Railway Signaling Interfaces |
|
Use Scenario: Shielding isolated gate driver supplies and feedback sensing circuits from IGBT switching noise and inductive kickback. IC Role / Device Role / Timing Role: Fast-response clamping element placed adjacent to gate driver IC power pins to suppress sub-100 ns spikes. Use Value: Achieves <5 ns response time from 0 V to V(BR), limiting voltage overshoot to ≤121 V even under 298 A dI/dt events. |
Use Scenario: Protecting 75 V signaling lines in European railway ETCS Level 2 balise communication interfaces from traction return current surges. IC Role / Device Role / Timing Role: Secondary protector downstream of gas discharge tube (GDT), handling residual energy after primary diversion. Use Value: Validated for IEC 61000-4-5 Class 5 (42 Ω) with 75 V VWM - matches nominal signaling rail and avoids false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Lower PPP rating (600 W vs. 36,000 W); same VWM and bidirectional polarity; SMC package (smaller thermal mass) | Not suitable for RTCA DO-160 lightning or IEC 61000-4-5 Class 4/5; limited to board-level ESD/EFT only | Select SMBJ75CA only for cost-sensitive consumer electronics where surge energy is <100 J and multi-stroke capability is unnecessary |
| SMCJ75CA | PPP = 1500 W; same VWM and polarity; larger SMC package than SMBJ but still orders of magnitude below PLAD thermal capacity | Cannot meet DO-160 Section 22 or IEC 61000-4-5 Class 3+; lacks MIL-PRF-19500 upscreening path | Choose SMCJ75CA for industrial PLC I/O where surge threat is defined by IEC 61000-4-4 (EFT), not lightning-level energy |
Compared with SMBJ75CA and SMCJ75CA, the MPLAD36KP75CA provides 24× and 240× higher peak pulse power respectively, enabling true secondary lightning protection with verified multi-stroke endurance - critical where failure risk demands MIL-PRF-19500 traceability and AEC-Q101 qualification.
Availability
MPLAD36KP75CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain systems, and industrial motor drives requiring stable component supply with full lot traceability, RoHS compliance (e3 plating), and extended temperature operation.
Supply support for MPLAD36KP75CA 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 radiation-hardened components for aerospace, defense, and industrial markets.
The MPLAD36KP75CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection in safety-critical platforms where thermal robustness, long-term surge endurance, and qualification to RTCA DO-160 and AEC-Q101 are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP75CA at its rated peak pulse current?
The MPLAD36KP75CA has a maximum clamping voltage (VC) of 121 V when subjected to its rated peak pulse current of 298 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in RF01216 Rev B and ensures downstream circuitry remains within safe voltage margins during high-energy transients. The MPLAD36KP75CA maintains this clamping performance across its full operating temperature range.
Is MPLAD36KP75CA suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD36KP75CA is tested and compliant with AEC-Q101 standards for discrete semiconductors, as confirmed in the RF01216 datasheet. It is designed for under-hood and powertrain environments, supporting junction temperatures from −55°C to +150°C and surviving repetitive load dump and ISO 7637-2 pulses. MPLAD36KP75CA meets automotive reliability requirements without derating.
Does MPLAD36KP75CA have polarity markings, and how is it mounted?
No - the MPLAD36KP75CA is bidirectional and carries no polarity marking; its terminals are electrically symmetric. Mounting requires soldering the metal base (bottom) to a large thermal pad per the recommended pad layout (Ref. A = 11.94 mm, B = 5.85 mm). The top-side terminals connect interchangeably, and the metal base serves as the primary thermal path, not a signal node.
What is the thermal resistance from junction to case (RθJC) for MPLAD36KP75CA?
The junction-to-case thermal resistance (RθJC) of MPLAD36KP75CA is 1.0 °C/W, measured with the case temperature controlled on a heatsink as specified in RF01216 Rev B. This low value is achieved via direct metal-base thermal coupling and enables reliable multi-pulse operation - essential for RTCA DO-160 Section 22 compliance. Proper PCB copper area is required to realize this spec.
Can MPLAD36KP75CA be used for IEC 61000-4-5 Class 5 lightning protection?
Yes - MPLAD36KP75CA is explicitly listed in RF01216 Rev B for IEC 61000-4-5 Class 5 secondary lightning protection with 42 Ω source impedance (short distance) and 12 Ω source impedance (Class 3). Its 36 kW PPP rating and 121 V clamping ensure compliance where system-level surge tests demand validated multi-stroke endurance beyond basic ESD/EFT protection.
MPLAD36KP75CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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
MPLAD36KP75CA FAQ
1.How can I place an order for MPLAD36KP75CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP75CA 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 MPLAD36KP75CA reliable?
The price and inventory of MPLAD36KP75CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP75CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP75CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP75CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP75CA?
MPLAD36KP75CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP75CA 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 MPLAD36KP75CA?
For technical support, including MPLAD36KP75CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP75CA requirements.
6.How does Aetrix verify that MPLAD36KP75CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP75CA 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 MPLAD36KP75CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP75CA?
All MPLAD36KP75CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP75CA, 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 MPLAD36KP75CA part is unused and in its original packaging.
Return procedure for MPLAD36KP75CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP75CA Tags
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