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Microchip Technology MAPLAD36KP400AE3
- Part No.:
- MAPLAD36KP400AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP400AE3.pdf
- Description:
- TVS DIODE 400VWM 644VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,583
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Product details
Overview
MAPLAD36KP400AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, features a 400 V reverse standoff voltage (VWM), clamps to ≤644 V at 56 A peak pulse current, and operates across –55°C to +150°C junction temperature - deployed in aircraft lightning protection per RTCA DO-160 Section 22.
For engineers reviewing the MAPLAD36KP400AE3 datasheet, MAPLAD36KP400AE3 pinout, MAPLAD36KP400AE3 application, or MAPLAD36KP400AE3 equivalent, this part is selected for secondary lightning protection (IEC 61000-4-5), load dump suppression, and pin-injection transients (DO-160F Waveform 4 Level 4), where low thermal resistance, RoHS-compliant plating, and MIL-PRF-19500 upscreening options are critical.
Technical Context
This TVS diode uses silicon avalanche technology with a metal-base cathode configuration for optimal heat 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 AEC-Q101 and RTCA DO-160F test protocols.
It meets IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (lightning) standards with defined source impedances (2 Ω, 12 Ω, 42 Ω), and supports pin-injection protection for Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) per DO-160F - with derating guidance provided in MicroNote 132 and 134.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains single-stroke lightning-level energy without failure |
| Reverse Standoff Voltage (VWM) | 400 V - maximum continuous operating voltage before clamping initiates |
| Clamping Voltage (VC) | ≤644 V @ IPP = 56 A - limits downstream circuit voltage during surge events |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct mounting to heatsink for cumulative heating mitigation |
| Operating Temperature Range | –55°C to +150°C - qualified for extended-range aerospace and engine-bay environments |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack required, simplifies SMT handling and storage |
| RoHS Compliance | e3 suffix - matte-tin plating compliant with EU RoHS Directive 2011/65/EU |
Pinout & Package
MAPLAD36KP400AE3 uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.33 mm), tin-lead or RoHS-compliant matte-tin terminals, and polarity marked on unidirectional variants - cathode is the metal base (bottom side).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface pad) | Transient current entry point | Connected to protected line; conducts surge current toward cathode during overvoltage |
| Cathode (metal base) | Current return path & thermal interface | Electrically and thermally connected to PCB copper pour or heatsink; primary heat conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT PLAD package | Enables high-power surge protection in space-constrained avionics layouts without through-hole mounting |
| 3σ lot norm screening on ID | Ensures consistent standby leakage (<10 μA @ 400 V) across production lots for reliable system sleep-mode integrity |
| AEC-Q101 qualification | Validates robustness for automotive electronics including alternator load dump and battery reverse polarity stress |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring M, MA, MX, or MXL screening levels with full lot traceability |
| RTCA DO-160F Waveform 4 Level 4 compliance | Guarantees survivability against 6.4/69 μs pin-injection transients up to 400 V standoff in aircraft systems |
Applications
| Aircraft Lightning Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Secondary surge protection on avionics data buses and sensor interfaces exposed to indirect lightning coupling per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping induced surges to safe levels before they reach sensitive receivers or ADC inputs. Use Value: Enables compliance with DO-160F Waveform 4 Level 4 (6.4/69 μs) and Waveform 5A Level 4 (40/120 μs) without external heatsinking. |
Use Scenario: Protection of infotainment ECUs and ADAS modules during 12 V/24 V vehicle alternator load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS absorbing 36 kW surge energy while limiting bus voltage to ≤644 V for <1 ms. Use Value: Prevents latch-up or permanent damage in microcontrollers and CAN transceivers during ISO 7637-2 Pulse 5a/b events. |
| Industrial Motor Drive I/O Protection | Railway Signaling Interface Protection |
Use Scenario: Input/output port protection on PLC analog modules interfacing with high-inductance motor feedback sensors. IC Role / Device Role / Timing Role: Fast-response avalanche diode suppressing switching transients and RFI-induced spikes on 4–20 mA loops. Use Value: Maintains signal integrity under repeated 10/1000 μs surges up to 56 A with <100 ps response time and minimal capacitance impact. |
Use Scenario: Ethernet and serial communication ports in wayside signaling equipment subject to induced surges from nearby traction currents. IC Role / Device Role / Timing Role: IEC 61000-4-5 Class 4-compliant TVS with 42 Ω source impedance rating for long-distance rail lines. Use Value: Delivers certified secondary lightning protection per EN 50121-4 with clamping stability across –40°C to +85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400A | Lower PPP (600 W), DO-214AA package, 1.5× higher RθJA (15°C/W) | Limited to single-event, low-duty-cycle industrial I/O - not rated for DO-160 multi-stroke or AEC-Q101 | Select when cost sensitivity outweighs aerospace/automotive qualification requirements |
| SMCJ400A | Higher PPP (1500 W), DO-214AB package, RθJA = 10°C/W, no MIL-PRF-19500 option | Suitable for automotive ECU front-end but lacks DO-160F Waveform 4/5A validation and 36 kW capability | Choose for non-certified automotive designs needing higher surge margin than SMBJ but lower cost than PLAD |
Compared with SMBJ400A and SMCJ400A, MAPLAD36KP400AE3 uniquely delivers 36 kW pulse power in an SMT package with certified DO-160F, AEC-Q101, and MIL-PRF-19500 scalability - making it irreplaceable for flight-critical and high-reliability load-dump applications where thermal management and multi-stroke endurance are mandatory.
Availability
MAPLAD36KP400AE3 is available at Aetrix Electronics and suitable for aircraft avionics, automotive powertrain ECUs, and industrial motor control systems requiring stable component supply, long-lifecycle support, and traceable sourcing for safety-critical designs.
Supply support for MAPLAD36KP400AE3 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MAPLAD series was developed specifically for high-energy transient suppression in certified aviation platforms and harsh automotive environments - emphasizing thermal robustness, multi-stroke reliability, and regulatory compliance over standard TVS offerings.
FAQ
What is the clamping voltage of MAPLAD36KP400AE3 at its rated peak pulse current?
The MAPLAD36KP400AE3 has a maximum clamping voltage (VC) of 644 V at its specified peak pulse current (IPP) of 56 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and ensures downstream circuitry remains within safe voltage limits during standardized surge events.
Is MAPLAD36KP400AE3 qualified for automotive applications per AEC-Q101?
Yes, MAPLAD36KP400AE3 is tested and qualified to AEC-Q101 standards for stress testing of discrete semiconductors. This includes high-temperature operating life, temperature cycling, and surge robustness - confirming suitability for under-hood automotive electronics such as engine control units and battery management systems.
Does MAPLAD36KP400AE3 support MIL-PRF-19500 upscreening?
Yes, MAPLAD36KP400AE3 supports optional MIL-PRF-19500 upscreening with M, MA, MX, and MXL reliability levels. These options include enhanced lot traceability, 3σ standby current screening, and conformance inspections detailed in the Hirel Non-Hermetic Product Portfolio brochure.
How does the PLAD package of MAPLAD36KP400AE3 improve thermal performance?
The PLAD package of MAPLAD36KP400AE3 achieves a junction-to-case thermal resistance of 1.0°C/W by using a metal-base cathode that serves as both electrical terminal and primary thermal path. When mounted on a properly sized copper pour or heatsink, this design minimizes cumulative heating during repetitive surges per DO-160F Section 22 testing.
What DO-160F transient waveforms is MAPLAD36KP400AE3 certified for?
MAPLAD36KP400AE3 is certified for RTCA DO-160F Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 pin-injection testing. These certifications are explicitly listed in the RF01216 datasheet and apply directly to the MAPLAD36KP400AE3 variant with e3 RoHS plating.
MAPLAD36KP400AE3 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):
- 400V
- Voltage - Breakdown (Min):
- 444V
- Voltage - Clamping (Max) @ Ipp:
- 644V
- Current - Peak Pulse (10/1000µs):
- 56A
- 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
MAPLAD36KP400AE3 FAQ
1.How can I place an order for MAPLAD36KP400AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP400AE3 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 MAPLAD36KP400AE3 reliable?
The price and inventory of MAPLAD36KP400AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP400AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP400AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP400AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP400AE3?
MAPLAD36KP400AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP400AE3 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 MAPLAD36KP400AE3?
For technical support, including MAPLAD36KP400AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP400AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP400AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP400AE3 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 MAPLAD36KP400AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP400AE3?
All MAPLAD36KP400AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP400AE3, 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 MAPLAD36KP400AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP400AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP400AE3 Tags
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