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Microchip Technology MPLAD36KP36A
- Part No.:
- MPLAD36KP36A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP36A.pdf
- Description:
- TVS DIODE 36VWM 58.1VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,427
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Product details
Overview
MPLAD36KP36A 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 36 V reverse standoff voltage (VWM), clamps to ≤58.1 V at 620 A peak impulse current (IPP), and operates across –55°C to +150°C junction temperature.
For engineers reviewing the MPLAD36KP36A datasheet, MPLAD36KP36A pinout, MPLAD36KP36A application, or MPLAD36KP36A equivalent, this device is selected for lightning robustness (RTCA DO-160 Section 22), load dump suppression, and secondary IEC 61000-4-5 compliance - especially where low thermal resistance, RoHS-compliant packaging, and AEC-Q101 qualification are required.
Technical Context
The MPLAD36KP36A uses silicon avalanche diode technology with a metal-base cathode configuration optimized for rapid thermal dissipation. Its 1.0°C/W junction-to-case thermal resistance enables stable multi-stroke operation under repetitive surges at ≤0.05% duty factor, validated per RTCA DO-160F Waveform 4 and 5A pin injection tests.
It meets IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (lightning) standards with 42 Ω, 12 Ω, and 2 Ω source impedances - supporting Class 1–5 protection levels depending on standoff voltage and distance criteria. Standby leakage is limited to ≤10 μA at 36 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning transients without degradation |
| Reverse Standoff Voltage (VWM) | 36 V - matches nominal 24 V DC bus with 50% margin for ripple and tolerance |
| Clamping Voltage (VC) | ≤58.1 V @ 620 A IPP - limits downstream IC stress below 60 V absolute maximum rating |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct heatsink mounting for cumulative heating management |
| Operating Temperature Range | –55°C to +150°C - qualified for engine bay, avionics bay, and industrial control environments |
| Standby Leakage Current | ≤10 μA @ VWM - avoids battery drain in always-on vehicle subsystems |
| AEC-Q101 Qualified | Yes - validated for automotive power electronics per stress test requirements |
Pinout & Package
Package: PLAD (Plastic Low-profile Anode-down) - void-free UL94V-0 epoxy body with tin-lead or RoHS-compliant matte-tin plating; cathode is the metal base (bottom side); weight ≈1.8 g; dimensions 12.32 × 10.54 × 3.68 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface Pad) | Positive terminal during surge conduction | Connected to protected line; accepts forward surge current up to 1500 A (IFSM) |
| Cathode (Metal Base) | Ground reference / surge return path | Must be soldered to large copper pour or heatsink for thermal and electrical performance |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT package | Enables placement on high-density PCBs while maintaining >1.0 mm creepage/clearance per IPC-2221 |
| 3σ lot norm screening on ID | Ensures consistent standby leakage across production lots for battery-sensitive applications |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to reflow - reduces assembly cost and risk |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for pin-injection immunity in avionics up to Level 5 (short-distance 300 V standoff) |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring M, MA, MX, or MXL screening levels |
Applications
| Aerospace Avionics Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting flight control sensors and communication interfaces from lightning-induced transients in commercial aircraft. IC Role / Device Role / Timing Role: Primary secondary surge clamp on 28 V DC distribution lines feeding ARINC 429 receivers and discrete input modules. Use Value: Meets RTCA DO-160 Section 22 multi-stroke lightning standard with <100 ps response time and no derating below 125°C ambient. |
Use Scenario: Safeguarding infotainment ECUs and ADAS domain controllers during alternator load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS placed at power entry point to clamp 12 V/24 V supply rails to ≤60 V within 100 ns. Use Value: Withstands 36 kW pulses without failure and maintains ≤10 μA leakage to prevent parasitic battery drain over 15-year service life. |
| Industrial Motor Drive Inputs | Railway Signaling Power Interfaces |
Use Scenario: Shielding PLC analog I/O modules and encoder feedback circuits from switching transients in variable-frequency drives. IC Role / Device Role / Timing Role: Fast-response clamping device on 24 V auxiliary power inputs subjected to IEC 61000-4-4 EFT bursts. Use Value: Clamps to 58.1 V at 620 A while limiting energy transfer to <100 mJ - preserving signal integrity of 16-bit ADC references. |
Use Scenario: Securing track-side signaling equipment power inputs against induced surges from nearby traction currents and lightning coupling. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), rated for IEC 61000-4-5 Class 4 (42 Ω source, long-distance). Use Value: Delivers 36 kW PPP with 1.0°C/W RθJC - enabling conduction-cooled mounting on aluminum enclosures without forced air. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ36A | Lower PPP (400 W), smaller SMC package, 1.5°C/W RθJA, no AEC-Q101 or DO-160 qualification | Suitable for consumer-grade 24 V systems; insufficient for aviation or automotive safety-critical loads | Select only for cost-sensitive, non-safety applications with single-stroke surge exposure |
| Vishay V26MLA0603NH | MLV-based (not avalanche diode), 120 J energy rating, slower response (>500 ps), no defined clamping voltage spec | Used in telecom power supplies; lacks deterministic clamping needed for precision analog front-ends | Prefer for high-energy, low-frequency transients where voltage overshoot tolerance >20% is acceptable |
Compared with SMAJ36A and V26MLA0603NH, the MPLAD36KP36A provides deterministic 58.1 V clamping, AEC-Q101 and DO-160F validation, and 36× higher peak power - making it uniquely suitable for mission-critical aerospace and automotive power rail protection where failure modes must be bounded and repeatable.
Availability
MPLAD36KP36A 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 traceable sourcing.
Supply support for MPLAD36KP36A 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) designs high-reliability semiconductors for aerospace, defense, and industrial markets, with expertise in radiation-hardened ICs, timing solutions, and power protection devices.
The MPLAD36KP36A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning and load dump protection in safety-critical platforms where thermal stability and qualification rigor are mandatory.
FAQ
What is the clamping voltage specification for MPLAD36KP36A at its rated peak pulse current?
The MPLAD36KP36A has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current of 620 A under 10/1000 μs waveform conditions. This value is measured at the device terminals with proper PCB layout per the recommended pad design, and ensures downstream components remain within safe operating voltage limits during surge events.
Is MPLAD36KP36A qualified to AEC-Q101, and what does that mean for automotive use?
Yes, MPLAD36KP36A is tested and qualified to AEC-Q101 Rev D for discrete semiconductors. This qualification confirms its reliability under automotive temperature cycling, humidity, mechanical shock, and surge stress conditions - making it suitable for under-hood and chassis-mounted power electronics such as body control modules and ADAS power supplies.
How does the PLAD package of MPLAD36KP36A improve thermal performance compared to standard SMC or SMB packages?
The PLAD package of MPLAD36KP36A features a metal base cathode that serves as both electrical return and primary thermal path, achieving a junction-to-case thermal resistance of just 1.0°C/W. This is up to 5× lower than typical SMC packages (~5°C/W), allowing efficient heat transfer to PCB copper pours or external heatsinks during repetitive 36 kW surges.
Can MPLAD36KP36A be used in bidirectional configurations, and if not, what is the alternative part number?
No, MPLAD36KP36A is unidirectional only. For bidirectional operation at the same 36 V standoff, the correct alternative is MPLAD36KP36CA. The 'CA' suffix denotes bidirectional construction, with symmetrical breakdown in both polarities and identical 36 kW PPP rating - essential for AC-coupled or floating-bus protection schemes.
Does MPLAD36KP36A require moisture sensitivity handling before reflow soldering?
No, MPLAD36KP36A is rated Moisture Sensitivity Level 1 (MSL-1) per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without dry packing or baking. This eliminates pre-reflow bake steps, reducing manufacturing cost and avoiding potential damage from moisture-induced popcorning during reflow.
MPLAD36KP36A 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 620A
- 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
MPLAD36KP36A FAQ
1.How can I place an order for MPLAD36KP36A through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP36A 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 MPLAD36KP36A reliable?
The price and inventory of MPLAD36KP36A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP36A is usually 5 days.
3.What payment methods are accepted for MPLAD36KP36A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP36A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP36A?
MPLAD36KP36A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP36A 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 MPLAD36KP36A?
For technical support, including MPLAD36KP36A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP36A requirements.
6.How does Aetrix verify that MPLAD36KP36A is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP36A 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 MPLAD36KP36A meets industry standards.
7.What is the process for return or replacement of MPLAD36KP36A?
All MPLAD36KP36A units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP36A, 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 MPLAD36KP36A part is unused and in its original packaging.
Return procedure for MPLAD36KP36A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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