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Microchip Technology MAPLAD36KP90CA
- Part No.:
- MAPLAD36KP90CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP90CA.pdf
- Description:
- TVS DIODE 90VWM 146VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,445
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Product details
Overview
MAPLAD36KP90CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, features a 90 V reverse standoff voltage (VWM), clamps to ≤146 V at 247 A peak pulse current (IPP), and operates across –55 °C to +150 °C junction temperature. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP90CA datasheet, MAPLAD36KP90CA pinout, MAPLAD36KP90CA application, or MAPLAD36KP90CA equivalent, key selection criteria include its bidirectional polarity, 1.0 °C/W junction-to-case thermal resistance, IEC 61000-4-5 Class 5 secondary lightning protection (42 Ω source), RTCA/DO-160F Waveform 4 Level 4 compliance, and RoHS-compliant e3 plating.
Technical Context
The MAPLAD36KP90CA uses an avalanche breakdown mechanism to clamp transients within nanoseconds, with <5 ns response time for bidirectional operation. Its low RθJC (1.0 °C/W) enables effective heat transfer to the PCB copper pad or heatsink under repetitive surge conditions up to 0.05% duty cycle.
It supports secondary lightning protection per IEC 61000-4-5 at multiple source impedances (42 Ω, 12 Ω, 2 Ω), with defined class coverage up to Class 5 at 42 Ω and Class 4 at 2 Ω. Pin injection immunity per RTCA/DO-160F Waveform 4 (6.4/69 μs) is validated to Level 4 at 90 V standoff.
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) | 90 V - maximum continuous operating voltage before clamping initiates |
| Clamping Voltage (VC) | ≤146 V @ IPP = 247 A - limits downstream circuit stress during worst-case transients |
| Peak Pulse Current (IPP) | 247 A @ 10/1000 μs - quantifies maximum surge current it can divert safely |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat dissipation into PCB copper or external heatsink |
| Operating Temperature Range | –55 °C to +150 °C - supports deployment in engine bays, avionics bays, and industrial enclosures |
| Surge Standards Compliance | IEC 61000-4-5 Class 5 (42 Ω), RTCA/DO-160F Waveform 4 Level 4 - certified for airborne equipment |
Pinout & Package
MAPLAD36KP90CA uses a surface-mount PLAD package with two terminals: anode and cathode. The metal base serves as the cathode for unidirectional variants; for bidirectional devices like MAPLAD36KP90CA, both terminals are symmetrical and non-polarized. Mounting requires the recommended FR4 pad layout (A = 0.470", B = 0.230") to maintain thermal performance and surge reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Surge current entry point during positive transients | Connects to protected line; symmetric with cathode in bidirectional operation |
| Cathode (Terminal 2) | Surge current return path during negative transients | Connects to ground or reference plane; electrically identical to anode in MAPLAD36KP90CA |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Protects AC-coupled or floating signal lines without polarity constraints |
| Low-profile thermoset epoxy case (UL94V-0) | Enables high-density PCB layouts while maintaining flame retardancy and mechanical robustness |
| RoHS-compliant matte-tin plating (e3) | Ensures reliable solderability per MIL-STD-750 Method 2026 and eliminates lead-based process risks |
| AEC-Q101 qualification | Validates reliability for automotive powertrain and chassis applications subject to thermal cycling and vibration |
| Moisture sensitivity level 1 (J-STD-020B) | Eliminates dry-pack requirement and floor-life restrictions-ready for standard SMT assembly |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC power inputs of flight management computers against lightning-induced surges per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary surge suppression device placed at board-level power entry, upstream of DC/DC converters. Use Value: Withstands multi-stroke lightning events (≥1000 A, 10/1000 μs) while limiting clamped voltage to ≤146 V-preserving downstream 36 V-rated components. |
Use Scenario: Safeguarding 12 V battery-fed ECU microcontrollers from load dump transients (ISO 7637-2 Pulse 5a) and alternator switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS placed across battery rail and ground to absorb both positive and negative polarity spikes. Use Value: Delivers 36 kW pulse power handling with 1.0 °C/W thermal resistance-enabling direct PCB copper thermal coupling without heatsinks. |
| Industrial Motor Drive Control Board | Railway Signaling Interface |
Use Scenario: Shielding isolated CAN and analog sensor inputs on motor drive control boards from EFT bursts (IEC 61000-4-4) and induced RFI. IC Role / Device Role / Timing Role: Secondary protection stage after common-mode chokes, clamping differential-mode surges on signal lines. Use Value: Clamps transients within <5 ns and supports ESD immunity per IEC 61000-4-2-reducing false triggers and latch-up risk in real-time control loops. |
Use Scenario: Securing 90 V DC signaling lines in track-side electronic interlocking units against induced lightning surges (IEC 61000-4-5, 42 Ω source). IC Role / Device Role / Timing Role: Class 5 secondary protector installed at field cable entry points to limit energy entering safety-critical logic circuits. Use Value: Validated for IEC 61000-4-5 Class 5 at 42 Ω impedance-ensuring compliance with EN 50121-3-2 for railway EMC certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | Lower PPP (600 W), smaller SMB package, RθJA = 40 °C/W, no AEC-Q101 or DO-160 qualification | Suitable for consumer or industrial low-energy surges; not rated for aircraft lightning or automotive load dump | Select when cost and board space constrain requirements-and surge energy remains below 1 kA, 10/1000 μs |
| SMCJ90CA | PPP = 1500 W, larger SMC package, RθJA = 25 °C/W, qualified to AEC-Q101 but not DO-160 | Valid for automotive ECU protection per ISO 7637-2, but lacks RTCA/DO-160F Waveform 4/5 validation | Choose for ground vehicle ECUs needing higher energy rating than SMBJ but without aviation certification needs |
Compared with SMBJ90CA and SMCJ90CA, MAPLAD36KP90CA provides 24× and 24× higher peak pulse power respectively, full DO-160F lightning compliance, and a thermally optimized PLAD package enabling direct PCB heat sinking-making it irreplaceable in certified aerospace platforms.
Availability
MAPLAD36KP90CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain electronics, and industrial motor drive systems requiring stable component supply across extended product lifecycles and rigorous environmental qualification.
Supply support for MAPLAD36KP90CA 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 MAPLAD36KP90CA belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical airborne and vehicular systems.
FAQ
What is the clamping voltage of MAPLAD36KP90CA at its rated peak pulse current?
The MAPLAD36KP90CA has a maximum clamping voltage (VC) of 146 V when subjected to its rated peak pulse current of 247 A under 10/1000 μs waveform conditions. This value is measured per standard test methods in the datasheet and ensures downstream components see limited overvoltage stress during surge events. The clamping performance is guaranteed across the full operating temperature range of –55 °C to +150 °C.
Is MAPLAD36KP90CA qualified for automotive applications?
Yes, MAPLAD36KP90CA is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units and body electronics. It meets stress tests for temperature cycling, humidity, and mechanical shock. However, its primary design emphasis is aerospace-grade lightning protection per RTCA DO-160F, so system-level validation per ISO 7637-2 remains necessary for automotive deployment.
Does MAPLAD36KP90CA require moisture-sensitive handling?
No, MAPLAD36KP90CA is rated at Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and does not require dry packing or baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates moisture-related popcorning risks during standard SMT assembly processes.
What is the thermal resistance from junction to ambient for MAPLAD36KP90CA?
The MAPLAD36KP90CA has a junction-to-ambient thermal resistance (RθJA) of 50 °C/W when mounted on an FR4 PCB using the recommended pad layout. Its much lower junction-to-case resistance (RθJC = 1.0 °C/W) indicates that thermal performance improves significantly when the metal base is thermally coupled to a heatsink or large copper pour-critical for repetitive surge scenarios.
Can MAPLAD36KP90CA be used for bidirectional signal line protection?
Yes, MAPLAD36KP90CA is explicitly designed as a bidirectional TVS diode (denoted by the "CA" suffix), making it suitable for protecting AC-coupled, differential, or floating signal lines such as RS-485, CAN FD, or Ethernet PHY interfaces. Its symmetrical breakdown behavior ensures equal clamping performance for both polarities without requiring orientation-specific placement.
MAPLAD36KP90CA 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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 247A
- 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
MAPLAD36KP90CA FAQ
1.How can I place an order for MAPLAD36KP90CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP90CA 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 MAPLAD36KP90CA reliable?
The price and inventory of MAPLAD36KP90CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP90CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP90CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP90CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP90CA?
MAPLAD36KP90CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP90CA 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 MAPLAD36KP90CA?
For technical support, including MAPLAD36KP90CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP90CA requirements.
6.How does Aetrix verify that MAPLAD36KP90CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP90CA 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 MAPLAD36KP90CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP90CA?
All MAPLAD36KP90CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP90CA, 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 MAPLAD36KP90CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP90CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP90CA Tags
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