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Microchip Technology MPLAD36KP15A
- Part No.:
- MPLAD36KP15A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP15A.pdf
- Description:
- TVS DIODE 15VWM 25.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,687
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Product details
Overview
MPLAD36KP15A from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive power systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 15 V reverse standoff voltage (VWM), clamps to ≤25.8 V at 1396 A peak pulse current (IPP), and operates across –55°C to +150°C junction temperature. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP15A datasheet, MPLAD36KP15A pinout, MPLAD36KP15A application, or MPLAD36KP15A equivalent, this device is selected for primary and secondary lightning protection, load dump suppression, and ESD/EFT hardening where low thermal resistance, RoHS-compliant packaging, and traceable high-reliability screening are required.
Technical Context
The MPLAD36KP15A uses an avalanche diode structure optimized for fast response (<100 ps rise time) and stable clamping under repetitive transients. Its metal-base package provides 1.0°C/W junction-to-case thermal resistance, enabling effective heat dissipation when mounted on FR4 with recommended pad layout.
It complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (lightning) at multiple source impedances (2 Ω, 12 Ω, 42 Ω), supporting Class 1–5 protection levels per RTCA/DO-160F Waveforms 4 and 5A - specifically rated for Level 4 up to 400 V and Level 5 up to 300 V standoff variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains full-rated surge energy without degradation under ≤0.05% duty cycle. |
| Reverse Standoff Voltage (VWM) | 15 V - maximum continuous DC or peak AC voltage the device blocks without clamping. |
| Breakdown Voltage (V(BR)) | 15.6–17.2 V @ 5 mA - ensures reliable avalanche initiation above operating voltage margin. |
| Max Clamping Voltage (VC) | 25.8 V @ 1396 A IPP - limits downstream circuit voltage during worst-case surge event. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct thermal coupling to heatsink or PCB copper, critical for multi-stroke reliability. |
| Steady-State Power Dissipation | 2.5 W @ TA = 25°C - defines safe continuous bias capability outside transient conditions. |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack or bake required prior to reflow soldering. |
Pinout & Package
Package: PLAD (Plastic Leaded Anode Down) - void-free UL94V-0 epoxy body with tin-lead or RoHS-compliant matte-tin plating; cathode terminal is the exposed metal base (bottom side); weight ≈1.7–2.0 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface pad) | Current entry point during forward conduction | Connected to protected line; forms low-inductance path to ground via cathode base. |
| Cathode (metal base) | Current return path / thermal interface | Serves as both electrical return and primary heat sink interface; must be soldered to large copper area. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW surge rating | Enables single-device protection against severe automotive load dump and aircraft lightning-induced transients. |
| AEC-Q101 qualification | Validates robustness for automotive powertrain and chassis applications requiring extended temperature cycling and humidity exposure. |
| Low-profile surface mount | Reduces board space and parasitic inductance vs. through-hole TVS, improving high-frequency transient response. |
| Traceable wafer & assembly lots | Supports full lot-level failure analysis and configuration control for aerospace and defense programs. |
| RoHS-compliant (e3 marking) | Meets global environmental compliance without sacrificing surge performance or thermal capability. |
Applications
| Aircraft Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power inputs in flight-critical avionics against RTCA DO-160 Section 22 multi-stroke lightning surges. IC Role / Device Role / Timing Role: Primary clamping element placed directly at connector entry point before DC-DC converters. Use Value: Withstands ≥1000A impulses at 10/1000 μs while maintaining <25.8 V clamping, preventing latch-up or damage to downstream ASICs. |
Use Scenario: Load dump suppression on 12 V battery-fed engine management systems during alternator field cutoff. IC Role / Device Role / Timing Role: Unidirectional TVS shunting surge energy to chassis ground during ISO 7637-2 Pulse 5a events. Use Value: Delivers 36 kW peak power handling with 1.0°C/W thermal resistance, minimizing localized heating during repeated 120 ms surges. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Secondary protection on 48 V DC bus lines feeding servo drives subject to switching transients and induced RFI. IC Role / Device Role / Timing Role: Fast-clamping TVS placed adjacent to IGBT gate drivers to limit voltage overshoot during turn-off. Use Value: Sub-100 ps response time ensures clamping initiates before MOSFET/IGBT breakdown thresholds are exceeded. |
Use Scenario: ESD and surge hardening of 24 V signaling lines in track-side electronic interlocking units exposed to outdoor lightning coupling. IC Role / Device Role / Timing Role: Bidirectional-capable variant (MPLAD36KP15CA) used for AC-coupled data lines; unidirectional version applied to DC power rails. Use Value: Certified to IEC 61000-4-5 Class 4 (42 Ω source) and IEC 61000-4-2 Level 4, ensuring interoperability with EN 50121-3-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Lower PPP rating (600 W), smaller SMB package, 1.0°C/W RθJA not achievable due to limited thermal mass. | Suitable only for consumer-grade or non-safety-critical industrial use; cannot meet DO-160 or AEC-Q101 requirements. | Select only for cost-sensitive, low-energy applications where 36 kW surge capacity is unnecessary. |
| SMCJ15A | 1500 W PPP rating, SMC package, RθJC ≈ 2.5°C/W - significantly higher thermal resistance than MPLAD36KP15A's 1.0°C/W. | Acceptable for basic automotive ISO 7637-2 compliance but lacks multi-stroke lightning endurance and traceability. | Choose when full DO-160 Section 22 certification and lot traceability are not required. |
Compared with SMBJ15A and SMCJ15A, the MPLAD36KP15A provides 24× and 24× higher peak pulse power respectively, coupled with certified AEC-Q101 reliability, DO-160 compliance, and industry-leading thermal performance - making it the only option for mission-critical aerospace and high-end automotive surge protection.
Availability
MPLAD36KP15A is available at Aetrix Electronics and suitable for aircraft avionics, automotive ECU power systems, industrial motor drive DC buses, and railway signaling interfaces requiring stable component supply, long-term lifecycle support, and certified high-reliability screening.
Supply support for MPLAD36KP15A 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, mixed-signal, and power solutions for aerospace, defense, and industrial markets.
The MPLAD36KP15A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump suppression in safety-critical environments.
FAQ
What is the clamping voltage of the MPLAD36KP15A at its rated peak pulse current?
The MPLAD36KP15A has a maximum clamping voltage (VC) of 25.8 V at 1396 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and guarantees that downstream circuitry remains below critical overvoltage thresholds during worst-case surge events. The MPLAD36KP15A maintains this clamping performance across its full operating temperature range.
Is the MPLAD36KP15A qualified for automotive applications?
Yes, the MPLAD36KP15A is fully qualified to AEC-Q101 for stress testing including temperature cycling, humidity bias HAST, and mechanical shock. It is designed for automotive engine control units, battery management systems, and ADAS power supplies where sustained reliability under load dump and ESD stress is mandatory. The MPLAD36KP15A also supports optional MIL-PRF-19500 upscreening for enhanced screening.
How does the PLAD package of the MPLAD36KP15A improve thermal performance?
The PLAD package places the cathode on the exposed metal base, enabling direct thermal conduction from the silicon die to the PCB copper or external heatsink. With a documented junction-to-case thermal resistance of 1.0°C/W, the MPLAD36KP15A achieves superior heat dissipation versus standard SMC or SMB packages. This allows the MPLAD36KP15A to sustain repetitive surges without thermal runaway or parameter drift.
Does the MPLAD36KP15A meet RTCA DO-160 lightning protection requirements?
Yes, the MPLAD36KP15A is explicitly rated for RTCA DO-160 Section 22 multi-stroke lightning testing. It meets Level 4 pin injection protection for Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs), and supports Class 1–5 IEC 61000-4-5 testing at 2 Ω, 12 Ω, and 42 Ω source impedances. These certifications are verified in Microsemi's RF01216 datasheet Rev B.
What is the polarity configuration and marking convention for the MPLAD36KP15A?
The MPLAD36KP15A is a unidirectional TVS diode with cathode on the metal base (bottom side) and anode on the top surface pad. Polarity is marked by a band on the top surface indicating the cathode end - consistent with standard diode marking practice. The "A" suffix in MPLAD36KP15A confirms unidirectional construction; bidirectional versions use the "CA" suffix (e.g., MPLAD36KP15CA).
MPLAD36KP15A 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 1396A (1.396kA)
- 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
MPLAD36KP15A FAQ
1.How can I place an order for MPLAD36KP15A through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP15A 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 MPLAD36KP15A reliable?
The price and inventory of MPLAD36KP15A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP15A is usually 5 days.
3.What payment methods are accepted for MPLAD36KP15A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP15A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP15A?
MPLAD36KP15A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP15A 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 MPLAD36KP15A?
For technical support, including MPLAD36KP15A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP15A requirements.
6.How does Aetrix verify that MPLAD36KP15A is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP15A 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 MPLAD36KP15A meets industry standards.
7.What is the process for return or replacement of MPLAD36KP15A?
All MPLAD36KP15A units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP15A, 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 MPLAD36KP15A part is unused and in its original packaging.
Return procedure for MPLAD36KP15A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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