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Microchip Technology MAPLAD36KP350CAE3
- Part No.:
- MAPLAD36KP350CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP350CAE3.pdf
- Description:
- TVS DIODE 350VWM 564VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,258
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Product details
Overview
MAPLAD36KP350CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤564 V at 100 A, and features a 350 V reverse standoff voltage (VWM), 389–431 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance.
For engineers reviewing the MAPLAD36KP350CAE3 datasheet, MAPLAD36KP350CAE3 pinout, MAPLAD36KP350CAE3 application, or MAPLAD36KP350CAE3 equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, 2 Ω source impedances), RTCA DO-160F Waveform 4 & 5A pin injection immunity, and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
This TVS diode employs an avalanche breakdown mechanism optimized for multi-stroke lightning events and fast-rising transients. Its metal-base package enables low thermal resistance (RθJC = 1.0 °C/W) and direct heat sinking, supporting sustained surge duty cycles ≤0.05%.
It operates bidirectionally with symmetrical clamping behavior and meets AEC-Q101 reliability requirements. The device is rated for junction temperatures from –55 °C to +150 °C and exhibits a temperature coefficient of breakdown voltage (αV(BR)) of ±430 mV/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without thermal runaway |
| Reverse Standoff Voltage (VWM) | 350 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 389–431 V @ 5 mA - ensures reliable turn-on margin above VWM for robust noise immunity |
| Clamping Voltage (VC) | ≤564 V @ 100 A - limits downstream circuit stress during full-rated surge current |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct mounting to heatsink for cumulative stroke thermal management |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack required, supports standard SMT reflow |
| RoHS Compliance | e3 suffix - lead-free matte tin plating, compliant with EU RoHS Directive 2011/65/EU |
Pinout & Package
MAPLAD36KP350CAE3 uses a void-free transfer-molded thermosetting epoxy PLAD package (UL94V-0), with metal base acting as cathode for unidirectional variants; for bidirectional MAPLAD36KP350CAE3, polarity is symmetrical and terminals are non-polarized. Package dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ≈1.7–2.0 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path | Bidirectional conduction - both terminals serve identical transient shunt paths; no polarity marking required |
| Metal base (bottom surface) | Thermal interface & mechanical ground | Direct thermal coupling to PCB copper pour or heatsink; electrically isolated from active junction |
Key Features
| Feature | Design Value |
|---|---|
| Multi-stroke lightning compliance | Validated per RTCA DO-160F Section 22 - withstands repeated 10/1000 μs surges without parameter shift |
| IEC 61000-4-5 secondary protection | Class 1–5 certified with 42 Ω, 12 Ω, and 2 Ω source impedances - covers long/short distance aircraft wiring configurations |
| Pin injection immunity | RTCA DO-160F Waveform 4 (6.4/69 μs) Level 4 up to 350 V VWM - protects avionics I/O against induced transients |
| AEC-Q101 qualified | Qualified per stress test conditions for automotive electronics - supports under-hood and powertrain applications |
| Low-profile SMT footprint | Height ≤5.33 mm - fits constrained aerospace enclosures while enabling automated assembly |
Applications
| Aircraft Avionics Power Input Protection | Automotive Load Dump Suppression |
|---|---|
|
Use Scenario: Protecting flight control computers and sensor interfaces from lightning-induced surges on 28 V DC power buses. IC Role / Device Role / Timing Role: Primary transient shunt element placed upstream of DC-DC converters and EMI filters. Use Value: Clamps 36 kW surges to ≤564 V within <5 ns, preserving downstream 40 V-rated components per DO-160F Section 22. |
Use Scenario: Safeguarding infotainment ECUs during alternator load dump events in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Bidirectional clamping device across battery rail, absorbing 120 V/400 ms transients. Use Value: Withstands ≥1000 A peak current per AEC-Q101, eliminating need for series fusing in high-reliability modules. |
| Industrial Motor Drive DC Bus Protection | Railway Signaling Interface Protection |
|
Use Scenario: Shielding PLC-based motor controllers from switching transients generated by IGBT inverters. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC link capacitors to clamp commutation spikes. Use Value: 1.0 °C/W RθJC enables thermal coupling to aluminum chassis, sustaining repetitive 100 A surges at 0.05% duty cycle. |
Use Scenario: Securing track-side signaling equipment against induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Bidirectional protection on RS-485/422 data lines and 110 V AC power inputs. Use Value: Meets EN 50121-4 immunity requirements for Class 3 railway environments with 42 Ω source impedance testing. |
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 SP3052-0350 | 350 V VWM, 560 V VC @ 100 A, but rated only to 3.5 kW PPP - 10× lower energy handling | Restricted to telecom/data line protection; insufficient for DO-160F Section 22 multi-stroke testing | Select only for low-energy signal-line applications where board space is critical and surge energy < 100 J |
| Vishay SMAJ350CA | 350 V VWM, 574 V VC @ 100 A, but 400 W PPP rating - lacks thermal design for sustained surge duty | Not qualified to AEC-Q101 or DO-160F; limited to commercial-grade industrial controls | Acceptable for cost-sensitive consumer-grade designs with single-event surge exposure only |
Compared with Littelfuse SP3052-0350 and Vishay SMAJ350CA, MAPLAD36KP350CAE3 provides 90× higher peak pulse power and validated multi-stroke endurance - essential for aerospace and automotive safety-critical power rails where thermal accumulation and waveform repetition define system reliability.
Availability
MAPLAD36KP350CAE3 is available at Aetrix Electronics and suitable for aircraft avionics, automotive powertrain modules, industrial motor drives, and railway signaling systems requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP350CAE3 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 radiation-hardened solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP350CAE3 belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump compliance in mission-critical systems.
FAQ
What is the clamping voltage of MAPLAD36KP350CAE3 at its rated peak pulse current?
The MAPLAD36KP350CAE3 has a maximum clamping voltage (VC) of 564 V when subjected to a 100 A peak impulse current 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 circuits during full-rated surge events. The clamping performance remains stable across –55 °C to +150 °C operating range.
Is MAPLAD36KP350CAE3 qualified for automotive applications?
Yes, MAPLAD36KP350CAE3 is AEC-Q101 qualified and explicitly rated for automotive load dump protection per ISO 7637-2 and SAE J1113-11 standards. Its bidirectional construction, 350 V VWM, and 36 kW PPP rating make it suitable for 12 V and 24 V vehicle power networks, including engine control units and ADAS domain controllers where high-reliability surge immunity is mandated.
Does MAPLAD36KP350CAE3 require a heatsink for operation?
MAPLAD36KP350CAE3 does not require an external heatsink for single-event surge suppression, but its 1.0 °C/W junction-to-case thermal resistance is intended for direct mounting to a PCB copper pour or metal chassis. For repetitive surge applications (e.g., >0.05% duty cycle), thermal coupling to a heatsink is recommended to prevent junction temperature exceedance beyond +150 °C.
How does the CA suffix in MAPLAD36KP350CAE3 indicate device polarity?
The "CA" suffix in MAPLAD36KP350CAE3 denotes bidirectional construction - meaning the device provides symmetrical clamping for both positive and negative transients without polarity sensitivity. Unlike unidirectional "A" versions (cathode on metal base), the CA variant has no designated anode or cathode terminal; either side functions identically as a surge shunt path.
What packaging options are available for MAPLAD36KP350CAE3?
MAPLAD36KP350CAE3 is supplied in bulk or tape-and-reel format. Tape-and-reel packaging follows EIA-481-B standard and requires adding the "TR" suffix (e.g., MAPLAD36KP350CAE3TR). The e3 suffix confirms RoHS-compliant matte tin plating, and the device is moisture sensitivity level 1 - no baking or dry pack is required prior to SMT reflow processing.
MAPLAD36KP350CAE3 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):
- 350V
- Voltage - Breakdown (Min):
- 389V
- Voltage - Clamping (Max) @ Ipp:
- 564V
- Current - Peak Pulse (10/1000µs):
- 64A
- 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
MAPLAD36KP350CAE3 FAQ
1.How can I place an order for MAPLAD36KP350CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP350CAE3 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 MAPLAD36KP350CAE3 reliable?
The price and inventory of MAPLAD36KP350CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP350CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP350CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP350CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP350CAE3?
MAPLAD36KP350CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP350CAE3 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 MAPLAD36KP350CAE3?
For technical support, including MAPLAD36KP350CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP350CAE3 requirements.
6.How does Aetrix verify that MAPLAD36KP350CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP350CAE3 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 MAPLAD36KP350CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP350CAE3?
All MAPLAD36KP350CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP350CAE3, 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 MAPLAD36KP350CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP350CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP350CAE3 Tags
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