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Microchip Technology MAPLAD36KP43CAE3
- Part No.:
- MAPLAD36KP43CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP43CAE3.pdf
- Description:
- TVS DIODE 43VWM 69.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,830
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Product details
Overview
MAPLAD36KP43CAE3 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, features a 43 V reverse standoff voltage (VWM), clamps transients to ≤69.4 V at 519 A peak pulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP43CAE3 datasheet, MAPLAD36KP43CAE3 pinout, MAPLAD36KP43CAE3 application, or MAPLAD36KP43CAE3 equivalent, key selection criteria include its bidirectional polarity, 43 V VWM rating, 69.4 V max clamping voltage at 519 A, RoHS-compliant e3 termination, and qualification per AEC-Q101 and MIL-PRF-19500 screening options.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device during fast-rising transients, with breakdown voltage V(BR) specified at 47.8–52.8 V and clamping voltage VC ≤69.4 V at IPP = 519 A under 10/1000 μs waveform. Its low thermal resistance (RθJC = 1.0 °C/W) enables effective heat dissipation when mounted on FR4 with recommended pad layout.
It supports secondary lightning protection per IEC 61000-4-5 at multiple source impedances (2 Ω, 12 Ω, 42 Ω) and meets RTCA/DO-160F Waveform 4 (Level 4) and Waveform 5A (Level 4) pin injection requirements up to 43 V VWM. Standby current ID is ≤10 μA at rated VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains high-energy lightning-induced surges without failure |
| Reverse Standoff Voltage (VWM) | 43 V - maximum continuous operating voltage before clamping initiates |
| Clamping Voltage (VC) | ≤69.4 V @ 519 A - limits downstream circuit voltage during worst-case surge |
| Breakdown Voltage (V(BR)) | 47.8–52.8 V @ 5 mA - defines precise conduction onset threshold |
| Peak Pulse Current (IPP) | 519 A @ 10/1000 μs - quantifies maximum surge current it can divert |
| Thermal Resistance (RθJC) | 1.0 °C/W - enables efficient junction-to-case heat transfer for reliability under repeated stress |
| Standby Current (ID) | ≤10 μA @ VWM - ensures negligible leakage in normal operation |
Pinout & Package
MAPLAD36KP43CAE3 uses a surface-mount PLAD package with metal base cathode (bidirectional configuration). The device has two terminals: anode and cathode, both accessible via the bottom metal base and top metallized pads. Polarity marking is not present on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during positive transients | Connected to protected line; conducts when voltage exceeds V(BR) in either polarity |
| Cathode | Current exit terminal during positive transients | Mounted to PCB ground plane or chassis; serves as thermal and electrical reference |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or floating lines against ± polarity surges without external polarity management |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics under temperature cycling, HTRB, and surge stress |
| RTCA DO-160 Section 22 compliance | Meets multi-stroke lightning immunity for avionics installations without derating |
| e3 RoHS-compliant termination | Matte-tin plating ensures solderability per MIL-STD-750 Method 2026 and eliminates lead-based process risks |
| Low RθJC (1.0 °C/W) | Enables >90% of PPP dissipation into PCB copper, reducing thermal runaway risk in compact layouts |
Applications
| Aircraft Avionics Power Input | Automotive 12 V Battery Line Protection |
|---|---|
Use Scenario: Protecting flight control computers and sensor interfaces from induced lightning transients on aircraft power buses. IC Role / Device Role / Timing Role: Primary-level transient suppressor placed at board-level input connector before DC/DC converters. Use Value: Withstands ≥500 multi-stroke DO-160 Section 22 waveforms at 43 V system level while maintaining <10 μA leakage. |
Use Scenario: Safeguarding infotainment ECUs and ADAS modules against load dump spikes in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Bidirectional clamp across battery rail to absorb 120 V/400 ms transients per ISO 7637-2 Pulse 5a. Use Value: Clamps to ≤69.4 V within <5 ns, preventing damage to 45 V-rated downstream MOSFETs and CAN transceivers. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Shielding gate drivers and current sensors in variable-frequency drives from IGBT switching-induced voltage spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC link capacitor terminals to limit dv/dt overshoot. Use Value: 36 kW PPP rating handles repetitive 100 A+ commutation surges without parameter drift over 10⁵ cycles. |
Use Scenario: Securing track-side signaling equipment connected to long outdoor cables exposed to induced surges. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy per IEC 61000-4-5 Class 4 (42 Ω source). Use Value: Achieves Class 4 immunity at 43 V working voltage with <100 ps response time, eliminating need for series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SP3022-040HTG | Unidirectional, 40 V VWM, 600 W PPP, SOD-323 package | Lower power rating; suited for signal-line, not power-rail protection | Select only for low-energy ESD/RFI suppression where 36 kW capability is unnecessary |
| Vishay SMAJ43CA | Bidirectional, 43 V VWM, 400 W PPP, SMA package | 1/90th the PPP rating; lacks DO-160/IEC 61000-4-5 Class 4 validation | Acceptable for cost-sensitive industrial controls but not certified aerospace or automotive safety-critical paths |
Compared with MAPLAD36KP43CAE3, SP3022-040HTG and SMAJ43CA offer smaller footprints and lower cost but cannot replicate its 36 kW surge handling, RTCA DO-160 compliance, or AEC-Q101 qualification-making them unsuitable for primary lightning or load-dump protection in safety-critical systems.
Availability
MAPLAD36KP43CAE3 is available at Aetrix Electronics and suitable for aircraft avionics, automotive battery line protection, and industrial motor drive DC bus applications requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD36KP43CAE3 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 and mixed-signal semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened and surge-robust components.
The MAPLAD36KP43CAE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for certified lightning and load-dump protection in mission-critical platforms where failure is not an option.
FAQ
What is the clamping voltage of MAPLAD36KP43CAE3 at its rated peak pulse current?
The MAPLAD36KP43CAE3 exhibits a maximum clamping voltage (VC) of 69.4 V when subjected to its rated peak pulse current of 519 A under the standard 10/1000 μs waveform. This value is guaranteed across temperature and lot variations per the RF01216 Rev B datasheet, ensuring predictable overvoltage limiting for downstream circuitry.
Is MAPLAD36KP43CAE3 qualified for automotive applications?
Yes, MAPLAD36KP43CAE3 is qualified to AEC-Q101 for stress testing including temperature cycling, highly accelerated life testing (HALT), and surge robustness. Its bidirectional construction, 43 V VWM rating, and 36 kW PPP make it suitable for 12 V battery line protection in engine control units and ADAS modules meeting ISO 7637-2 Pulse 5a requirements.
Does MAPLAD36KP43CAE3 meet RTCA DO-160 lightning standards?
Yes, MAPLAD36KP43CAE3 is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing at Level 4 and Level 5 (short-distance configuration) per the RF01216 datasheet. Its 36 kW rating and sub-5 ns response enable compliance without external derating or parallel staging.
What does the "CA" suffix indicate in MAPLAD36KP43CAE3?
The "CA" suffix in MAPLAD36KP43CAE3 denotes bidirectional polarity - meaning the device provides symmetrical clamping for both positive and negative transients. This differs from unidirectional variants (e.g., MAPLAD36KP43AE3), which conduct only during reverse-biased surges and require correct orientation on PCB.
What is the thermal resistance specification for MAPLAD36KP43CAE3?
MAPLAD36KP43CAE3 has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, measured with case temperature controlled on a heatsink per test condition 4 in RF01216 Rev B. This low value allows >90% of 36 kW pulse energy to be conducted into the PCB copper, minimizing localized heating during repetitive surge events.
MAPLAD36KP43CAE3 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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 519A
- 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
MAPLAD36KP43CAE3 FAQ
1.How can I place an order for MAPLAD36KP43CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP43CAE3 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 MAPLAD36KP43CAE3 reliable?
The price and inventory of MAPLAD36KP43CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP43CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP43CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP43CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP43CAE3?
MAPLAD36KP43CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP43CAE3 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 MAPLAD36KP43CAE3?
For technical support, including MAPLAD36KP43CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP43CAE3 requirements.
6.How does Aetrix verify that MAPLAD36KP43CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP43CAE3 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 MAPLAD36KP43CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP43CAE3?
All MAPLAD36KP43CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP43CAE3, 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 MAPLAD36KP43CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP43CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP43CAE3 Tags
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