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Microchip Technology MAPLAD36KP280A
- Part No.:
- MAPLAD36KP280A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP280A.pdf
- Description:
- TVS DIODE 280VWM 451VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,618
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Product details
Overview
MAPLAD36KP280A 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, clamps transients to ≤451 V at 80 A peak impulse current, and operates with 280 V reverse standoff voltage - enabling robust secondary lightning protection per IEC 61000-4-5 (12 Ω source) Class 4 and RTCA DO-160F Waveform 4 Level 4.
For engineers reviewing the MAPLAD36KP280A datasheet, MAPLAD36KP280A pinout, MAPLAD36KP280A application, or MAPLAD36KP280A equivalent, key selection criteria include its 280 V VWM rating, 451 V max clamping voltage at IPP, 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, and qualification to AEC-Q101 and MIL-PRF-19500 screening levels.
Technical Context
The MAPLAD36KP280A employs an avalanche diode structure optimized for low clamping ratio and minimal thermal resistance. Its metal-base package enables direct heat sinking, supporting continuous operation under repetitive surges at ≤0.05% duty factor when mounted on FR4 with recommended pad layout.
It meets stringent aviation standards including RTCA DO-160F Section 22 multi-stroke lightning immunity and provides pin-injection protection for Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs), with derating guidance available in MicroNote 132 and MicroNote 134 for combined steady-state and pulse loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W @ 10/1000 μs - sustains aircraft-level lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 280 V - matches nominal 230–277 VAC-derived DC bus or 28 VDC avionics rail |
| Max Clamping Voltage (VC) | 451 V @ 80 A IPP - limits downstream voltage stress during IEC 61000-4-5 Class 4 test |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or external heatsink |
| Standby Current (ID) | 10 μA @ 280 V - ensures negligible leakage in always-on protection circuits |
| Breakdown Voltage Range | 311–345 V @ 5 mA - guarantees reliable avalanche conduction onset above VWM |
| Temperature Coefficient | 344 mV/°C - stable V(BR) drift over -55°C to +150°C operating range |
Pinout & Package
MAPLAD36KP280A uses a thermally enhanced PLAD surface-mount package with metal base acting as cathode terminal. Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ≈1.85 g. UL94V-0 void-free epoxy body with annealed matte-tin (e3) plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and high-current return node; must be soldered to large copper pour or heatsink |
| Top Surface Pad | Anode | Signal-side connection point; routed with minimum trace inductance for fast transient response |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT construction | Enables placement on compact avionics PCBs without height clearance issues (max height 5.33 mm) |
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring zero defect reliability |
| MIL-PRF-19500 upscreening options | Supports M, MA, MX, MXL reliability levels for mission-critical aerospace deployments |
| RTCA DO-160F Waveform 4 Level 4 compliance | Withstands 6.4/69 μs pin-injection transients up to 280 V VWM devices without degradation |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints per IPC/JEDEC J-STD-020B |
Applications
| Aircraft Power Distribution Units | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting 270 VDC distribution buses in fly-by-wire control systems against multi-stroke lightning events per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient suppression device placed at bus entry point, clamping surges within 100 ps. Use Value: Enables compliance with RTCA DO-160F Level 4 waveform injection while maintaining <451 V clamping ceiling. | Use Scenario: Safeguarding engine control units (ECUs) during alternator load dump events in 24 V commercial vehicles. IC Role / Device Role / Timing Role: High-power TVS placed across battery input to absorb 120 V/400 ms transients. Use Value: Handles 36 kW surge energy without thermal runaway, validated per AEC-Q101 stress testing. |
| Industrial Motor Drive DC Links | Renewable Energy Inverter Inputs |
Use Scenario: Protecting IGBT gate drivers and DC-link capacitors in servo drives exposed to switching-induced RFI and EFT. IC Role / Device Role / Timing Role: Secondary protection stage after MOV-based front-end, absorbing residual high-frequency spikes. Use Value: Provides sub-100 ps response time and 10 μA leakage - critical for low-power standby monitoring circuits. | Use Scenario: Shielding solar inverter inputs from induced surges due to nearby lightning strikes on photovoltaic arrays. IC Role / Device Role / Timing Role: IEC 61000-4-5 Class 4 compliant TVS on MPPT input stage with 12 Ω source impedance. Use Value: Delivers 451 V clamping at 80 A IPP - maintains safe operating area for downstream SiC MOSFETs. |
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 SP36-280 | Same 280 V VWM and 451 V VC, but 1.5 °C/W RθJC and no AEC-Q101 qualification | Approved for industrial but not automotive or aerospace deployment | Select when cost sensitivity outweighs qualification requirements and thermal margin permits higher RθJC |
| Vishay SMAJ280A | Lower 400 W PPP rating, 5.0 mm × 6.2 mm SMA package, 2.5 °C/W RθJC | Limited to single-stroke surges; unsuitable for DO-160 multi-stroke or IEC 61000-4-5 Class 4 | Use only for low-energy ESD/EFT protection where 36 kW capability is unnecessary |
Compared with SP36-280 and SMAJ280A, MAPLAD36KP280A uniquely combines 36 kW pulse handling, 1.0 °C/W thermal resistance, AEC-Q101 qualification, and DO-160F compliance - making it the sole option for certified aerospace power bus protection.
Availability
MAPLAD36KP280A is available at Aetrix Electronics and suitable for aircraft power distribution units, automotive load dump protection circuits, and industrial motor drive DC links requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD36KP280A 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 analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MAPLAD36KP280A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning survivability and DO-160F compliance in safety-critical avionics and vehicle electrification systems.
FAQ
What is the maximum clamping voltage of MAPLAD36KP280A at its rated peak pulse current?
The MAPLAD36KP280A has a maximum clamping voltage (VC) of 451 V at 80 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 clamping performance remains stable across its -55°C to +150°C operating temperature range.
Is MAPLAD36KP280A qualified for automotive applications?
Yes, MAPLAD36KP280A is tested and qualified to AEC-Q101 standards for discrete semiconductors, confirming its suitability for automotive powertrain and chassis applications. Its construction, wafer lot traceability, and surge testing meet the stress requirements for under-hood environments, including load dump protection in 24 V commercial vehicle systems.
Does MAPLAD36KP280A require dry pack packaging or moisture sensitivity handling?
No, MAPLAD36KP280A is rated Moisture Sensitivity Level 1 (MSL-1) per IPC/JEDEC J-STD-020B, meaning it does not require dry pack packaging or floor-life controls. The device can be stored and processed indefinitely at ambient conditions without baking or special humidity management prior to reflow soldering.
How is thermal management implemented for MAPLAD36KP280A in high-duty-cycle applications?
MAPLAD36KP280A achieves 1.0 °C/W junction-to-case thermal resistance via its metal-base PLAD package, which must be soldered directly to a large copper pour or external heatsink. For repetitive surges at >0.05% duty factor, MicroNote 134 provides derating curves for combined steady-state and pulse power dissipation, ensuring safe operation without thermal runaway.
What standards does MAPLAD36KP280A meet for lightning protection?
MAPLAD36KP280A meets RTCA DO-160F Section 22 for multi-stroke lightning, IEC 61000-4-5 Class 4 with 12 Ω source impedance, and pin-injection immunity for Waveform 4 (6.4/69 μs) Level 4. These certifications are verified through full-surge testing per the RF01216 specification, confirming its use in primary and secondary lightning protection zones of aircraft electrical systems.
MAPLAD36KP280A 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):
- 280V
- Voltage - Breakdown (Min):
- 311V
- Voltage - Clamping (Max) @ Ipp:
- 451V
- Current - Peak Pulse (10/1000µs):
- 80A
- 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
MAPLAD36KP280A FAQ
1.How can I place an order for MAPLAD36KP280A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP280A 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 MAPLAD36KP280A reliable?
The price and inventory of MAPLAD36KP280A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP280A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP280A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP280A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP280A?
MAPLAD36KP280A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP280A 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 MAPLAD36KP280A?
For technical support, including MAPLAD36KP280A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP280A requirements.
6.How does Aetrix verify that MAPLAD36KP280A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP280A 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 MAPLAD36KP280A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP280A?
All MAPLAD36KP280A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP280A, 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 MAPLAD36KP280A part is unused and in its original packaging.
Return procedure for MAPLAD36KP280A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP280A Tags
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