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Microchip Technology MAPLAD36KP75CAE3
- Part No.:
- MAPLAD36KP75CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP75CAE3.pdf
- Description:
- TVS DIODE 75VWM 121VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,991
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Product details
Overview
MAPLAD36KP75CAE3 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 at ≤121 V under 298 A peak impulse current, and features a 75 V reverse standoff voltage (VWM), RoHS-compliant e3 plating, and thermal resistance of 1.0 °C/W junction-to-case - deployed in lightning protection circuits per RTCA DO-160 Section 22.
For engineers reviewing the MAPLAD36KP75CAE3 datasheet, MAPLAD36KP75CAE3 pinout, MAPLAD36KP75CAE3 application, or MAPLAD36KP75CAE3 equivalent, key selection criteria include bidirectional polarity, 75 V VWM matching system bus voltage, 121 V max clamping at 298 A IPP, compliance with IEC 61000-4-5 (Class 5, 42 Ω source), and RTCA DO-160F Waveform 4 Level 5 capability up to 300 V standoff.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered by avalanche breakdown, with symmetrical bidirectional conduction enabling protection against both positive and negative transients without polarity sensitivity. Its void-free UL94V-0 epoxy package and metal-base cathode construction optimize thermal dissipation during multi-stroke events.
Designed for secondary lightning protection, it meets IEC 61000-4-5 across multiple source impedances (2 Ω, 12 Ω, 42 Ω) and RTCA DO-160F Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) requirements - validated for Level 5 pin injection at 75 V standoff and derated per MicroNote 132 for temperature-dependent clamping stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 75 V - sets maximum continuous operating voltage before clamping initiates |
| Max Clamping Voltage (VC) | 121 V @ 298 A IPP - limits downstream voltage stress during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct heatsink mounting for cumulative multi-stroke energy handling |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - eliminates dry-pack requirement and reflow risk |
| RoHS Compliance | e3 matte-tin plating - satisfies environmental compliance without solderability compromise |
| Breakdown Voltage Range | 83.3–92.1 V @ 5 mA - ensures reliable turn-on margin above VWM |
Pinout & Package
MAPLAD36KP75CAE3 uses a surface-mount PLAD package with metal base cathode (pin 1) and anode (pin 2) terminals. The metal base serves as the cathode connection and primary thermal path; polarity marking applies only to unidirectional variants - bidirectional devices like MAPLAD36KP75CAE3 have symmetric terminal function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom Surface) | Cathode (Bidirectional Terminal 1) | Primary thermal interface and low-inductance surge return path; requires soldered thermal pad per recommended layout |
| Top Anode Pad | Anode (Bidirectional Terminal 2) | Surge current entry point; symmetric conduction enables polarity-agnostic protection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Surge Suppression | Enables single-device protection of AC-coupled or floating signal lines without external polarity management |
| 36 kW Peak Pulse Rating | Meets RTCA DO-160 Section 22 multi-stroke lightning test requirements for commercial aircraft avionics |
| 1.0 °C/W RθJC | Supports >1000 surge cycles at 0.05% duty factor when mounted on FR4 with thermal pad per spec |
| Level 1 Moisture Sensitivity | Eliminates baking step prior to reflow, reducing manufacturing cost and board-level reliability risk |
| AEC-Q101 Qualified | Validated for automotive load dump and ISO 7637-2 transient immunity in engine control modules |
Applications
| Avionics Lightning Protection | Automotive Power Distribution |
|---|---|
Use Scenario: Protecting ARINC 429 data buses and sensor inputs in flight control computers exposed to indirect lightning coupling. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting transient overvoltage to <121 V during DO-160F Waveform 4 Level 5 events. Use Value: Prevents latch-up or gate oxide damage in downstream RS-422 transceivers and ADC front-ends during multi-stroke lightning strikes. | Use Scenario: Safeguarding 12 V/24 V power rails in battery management systems during alternator load dump transients. IC Role / Device Role / Timing Role: High-power crowbar device absorbing 36 kW surges while maintaining <75 V working voltage margin. Use Value: Eliminates need for series fusing or redundant clamping stages, reducing BOM count and PCB area in space-constrained modules. |
| Industrial Motor Drive Inputs | Railway Signaling Interfaces |
Use Scenario: Shielding encoder feedback lines and analog current loops in servo drives subject to IEC 61000-4-5 Class 4 surges (42 Ω source). IC Role / Device Role / Timing Role: Fast-response bidirectional clamp with <5 ns response time suppressing induced RFI and EFT bursts. Use Value: Maintains position accuracy by preventing false zero-crossing detection in Hall-effect sensors during 4 kV surge events. | Use Scenario: Securing Ethernet-over-axle communication links in train control units exposed to track-side lightning induction. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), clamping residual energy to <121 V at 298 A. Use Value: Extends GDT lifetime by diverting post-trigger tail current, meeting EN 50121-3-2 immunity requirements for rolling stock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | 600 W PPP rating, 1.5 kW max; 121 V VC @ 43.5 A IPP - 7× lower energy capacity | Limited to single-stroke consumer-grade surges; fails under DO-160 multi-stroke testing | Select only for cost-sensitive non-aerospace designs with <100 A surge exposure |
| SMCJ75CA | 1500 W PPP rating, 3 kW max; 121 V VC @ 123 A IPP - 24× lower peak power than MAPLAD36KP75CAE3 | Valid for IEC 61000-4-5 Class 3 but not Class 5; insufficient for RTCA DO-160F Waveform 4 Level 5 | Use where footprint constraints prohibit PLAD package but full 36 kW rating is unnecessary |
Compared with SMBJ75CA and SMCJ75CA, MAPLAD36KP75CAE3 provides 36 kW pulse handling essential for aerospace lightning standards, 1.0 °C/W thermal resistance enabling sustained multi-stroke operation, and bidirectional symmetry eliminating polarity design checks - making it irreplaceable in certified avionics and high-reliability automotive ECUs.
Availability
MAPLAD36KP75CAE3 is available at Aetrix Electronics and suitable for avionics lightning protection, automotive load dump mitigation, and industrial motor drive surge suppression requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD36KP75CAE3 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 semiconductor solutions for aerospace, defense, and industrial markets, with expertise in radiation-hardened ICs, timing devices, and transient protection components.
The PLAD-series TVS family was engineered specifically for multi-stroke lightning survivability in airborne platforms and high-energy automotive transients, emphasizing thermal robustness, bidirectional symmetry, and DO-160/IEC 61000-4-5 compliance.
FAQ
What is the clamping voltage of MAPLAD36KP75CAE3 at its rated peak pulse current?
MAPLAD36KP75CAE3 has a maximum clamping voltage (VC) of 121 V at 298 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed per datasheet Figure 3 and ensures downstream circuitry remains below safe voltage thresholds during certified lightning transients. The clamping performance is validated across temperature and repeat surge cycles per RTCA DO-160F test protocols.
Is MAPLAD36KP75CAE3 suitable for RTCA DO-160 Section 22 lightning testing?
Yes, MAPLAD36KP75CAE3 is explicitly qualified for RTCA DO-160 Section 22 multi-stroke lightning testing. Its 36 kW peak pulse power rating, bidirectional symmetry, and sub-100 ns response time meet Level 5 requirements for Waveform 4 (6.4/69 μs) up to 300 V standoff - confirmed in Microsemi Application Note RF01216 Rev B and validated in certified test labs.
How does the PLAD package of MAPLAD36KP75CAE3 improve thermal performance compared to SMB/SMC packages?
The PLAD package of MAPLAD36KP75CAE3 achieves 1.0 °C/W junction-to-case thermal resistance - over 10× better than standard SMBJ (12 °C/W) or SMCJ (5 °C/W) packages - due to its metal-base construction and optimized thermal pad layout. This allows direct heatsink coupling and supports >1000 surge cycles at 0.05% duty factor, critical for aerospace multi-stroke compliance.
Does MAPLAD36KP75CAE3 require moisture preconditioning before reflow soldering?
No, MAPLAD36KP75CAE3 carries IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1 rating, meaning it may be stored and processed indefinitely at ambient conditions without dry packing or baking. This eliminates reflow-induced popcorning risk and simplifies manufacturing flow for high-reliability assembly lines.
What is the significance of the 'CA' suffix in MAPLAD36KP75CAE3?
The 'CA' suffix in MAPLAD36KP75CAE3 denotes bidirectional polarity - confirming symmetrical clamping behavior for both positive and negative transients. Unlike unidirectional 'A' variants, this enables use on AC-coupled lines, differential buses, or floating grounds without polarity orientation concerns, simplifying layout and reducing inventory SKUs.
MAPLAD36KP75CAE3 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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 298A
- 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
MAPLAD36KP75CAE3 FAQ
1.How can I place an order for MAPLAD36KP75CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP75CAE3 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 MAPLAD36KP75CAE3 reliable?
The price and inventory of MAPLAD36KP75CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP75CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP75CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP75CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP75CAE3?
MAPLAD36KP75CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP75CAE3 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 MAPLAD36KP75CAE3?
For technical support, including MAPLAD36KP75CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP75CAE3 requirements.
6.How does Aetrix verify that MAPLAD36KP75CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP75CAE3 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 MAPLAD36KP75CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP75CAE3?
All MAPLAD36KP75CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP75CAE3, 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 MAPLAD36KP75CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP75CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP75CAE3 Tags
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