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Microchip Technology MAPLAD18KP60CA
- Part No.:
- MAPLAD18KP60CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP60CA.pdf
- Description:
- TVS DIODE 60VWM 96.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,061
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Product details
Overview
MAPLAD18KP60CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 18,000 W peak pulse power at 10/1000 μs, clamps at ≤96.8 V under 100 A peak impulse current, and features a 60 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (66.7–73.7 V). It is qualified to AEC-Q101 and meets RTCA DO-160F Waveform 4 Level 4 and IEC 61000-4-5 Class 1–5 secondary lightning protection requirements.
For engineers reviewing the MAPLAD18KP60CA datasheet, MAPLAD18KP60CA pinout, MAPLAD18KP60CA application, or MAPLAD18KP60CA equivalent, this device is selected for high-reliability DC bus protection in avionics power supplies, engine control units, and airborne data link interfaces where multi-stroke lightning immunity and low thermal resistance are critical.
Technical Context
The MAPLAD18KP60CA operates as a bidirectional avalanche diode-based TVS, leveraging silicon junction technology to clamp transients symmetrically across both polarities. Its metal-base package provides direct thermal path to PCB copper, achieving 0.7 °C/W junction-to-case thermal resistance and enabling sustained multi-pulse operation per RTCA DO-160 Section 22.
It is characterized for 10/1000 μs waveform compliance, supports 42 Ω, 12 Ω, and 2 Ω source impedances per IEC 61000-4-5, and maintains <10 μA standby current at 60 V VWM - critical for low-leakage DC power rail protection in always-on avionics subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - enables single-device protection against DO-160F Lightning Waveform 4 (6.4/69 μs) and IEC 61000-4-5 surges up to Class 5. |
| Reverse Standoff Voltage (VWM) | 60 V - sets maximum continuous operating voltage before clamping; matches nominal 48 VDC aircraft bus systems with margin. |
| Clamping Voltage (VC @ IPP) | ≤96.8 V @ 100 A - limits downstream voltage stress during surge, preserving 100 V-rated components on protected line. |
| Breakdown Voltage (V(BR)) | 66.7–73.7 V @ I(BR) - defines symmetric avalanche initiation threshold; ensures predictable turn-on within ±5% tolerance. |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - allows efficient heat transfer to heatsink or large copper pour, supporting >0.05% duty cycle multi-stroke events. |
| Standby Current (ID) | ≤10 μA @ 60 V - minimizes quiescent power loss in battery-backed or low-power avionics modules. |
| Package Type | Surface-mount PLAD - low-profile void-free epoxy body (UL94V-0), tin-plated terminals, 1 g mass, compatible with automated SMT assembly. |
Pinout & Package
MAPLAD18KP60CA uses a 2-terminal surface-mount PLAD package with symmetrical bidirectional polarity. The cathode/anode terminals are located on opposite edges of the metal base; no polarity marking is required for bidirectional operation. Mounting requires the recommended pad layout per RF01215 Rev B (page 7) to ensure thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Anode side) | Surge input/output node | Connects to protected line (e.g., 48 VDC bus); forms one half of symmetrical clamping path. |
| Terminal 2 (Cathode side) | Surge input/output node | Connects to reference plane (e.g., chassis ground); completes bidirectional clamping loop with Terminal 1. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC-coupled or floating DC lines without polarity constraints - essential for avionics data buses and sensor interfaces. |
| MIL-PRF-19500 upscreening option | Supports high-reliability screening (M, MA, MX, MXL levels) for mission-critical aerospace deployments requiring lot traceability and extended temperature validation. |
| RTCA DO-160F Waveform 4 Level 4 compliance | Validated for 6.4/69 μs pin-injection transients at 25 °C - directly applicable to flight-critical navigation and communication equipment. |
| IEC 61000-4-5 Class 1–5 secondary lightning protection | Meets full range of industrial and aerospace surge immunity requirements using 42 Ω, 12 Ω, and 2 Ω source impedances - eliminates need for external impedance matching networks. |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life restrictions per IPC/JEDEC J-STD-020B - reduces handling overhead in production environments. |
Applications
| Aircraft Power Distribution Units | Engine Control Unit (ECU) Inputs |
|---|---|
Use Scenario: Protection of 48 VDC main bus feeders in Line Replaceable Units (LRUs) subject to lightning-induced transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS placed at bus entry point to clamp common-mode surges before they propagate into DC-DC converters and monitoring ICs. Use Value: 18,000 W PPP rating and 0.7 °C/W RθJC enable reliable multi-stroke suppression without thermal runaway - extending LRU service life in repeated lightning exposure. | Use Scenario: Input protection for analog sensor signal conditioning circuits (e.g., oil pressure, temperature) in turbine engine controllers exposed to load dump and ESD. IC Role / Device Role / Timing Role: Fast-response TVS shunting transients away from precision op-amps and ADC front-ends while maintaining <10 μA leakage at 60 V. Use Value: ≤96.8 V clamping voltage ensures downstream 100 V-rated signal chain components remain within safe operating area during 100 A surge events. |
| Airborne Data Link Interfaces | Avionics Display Backlight Drivers |
Use Scenario: Surge hardening of RS-422/ARINC 429 data lines connecting flight management computers to remote I/O modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential-line pair to suppress common-mode noise and induced RFI per IEC 61000-4-4 EFT testing. Use Value: Symmetric clamping preserves signal integrity across bidirectional serial links without polarity-dependent insertion loss or skew. | Use Scenario: Protection of PWM-controlled LED backlight drivers in multifunction displays subjected to switching transients from adjacent power converters. IC Role / Device Role / Timing Role: TVS connected between driver output and chassis ground to absorb inductive kickback from boost inductors and MOSFET switching nodes. Use Value: 1500 A forward surge current rating (IFSM) prevents failure during repetitive inductive energy dumps - ensuring display uptime in cockpit-critical applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ60CA | 600 W PPP rating, SMB package, 100 V VC @ 10 A - 30× lower power handling than MAPLAD18KP60CA. | Suitable only for low-energy ESD/EFT; cannot meet DO-160F Lightning Waveform 4 or IEC 61000-4-5 Class 4/5. | Select when cost and board space constrain design and surge threat level is limited to IEC 61000-4-2/4-4 only. |
| SMCJ60CA | 1500 W PPP rating, SMC package, 96.8 V VC @ 15.3 A - 12× lower peak power than MAPLAD18KP60CA. | Valid for IEC 61000-4-5 Class 1–3 with 42 Ω source; insufficient for DO-160F multi-stroke or Class 4/5 testing. | Choose for automotive infotainment or industrial PLC I/O where full aerospace-grade surge immunity is not required. |
Compared with SMBJ60CA and SMCJ60CA, MAPLAD18KP60CA delivers 30× and 12× higher peak pulse power respectively, enabling compliance with RTCA DO-160F Section 22 and IEC 61000-4-5 Class 5 - making it the only viable option for primary lightning protection in certified avionics hardware.
Availability
MAPLAD18KP60CA is available at Aetrix Electronics and suitable for aircraft power distribution, engine control unit protection, and airborne data link interface hardening requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD18KP60CA 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 MAPLAD18KP60CA belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection in certified avionics systems meeting RTCA DO-160 and MIL-STD-461 requirements.
FAQ
What is the clamping voltage specification for MAPLAD18KP60CA under peak surge conditions?
The MAPLAD18KP60CA has a maximum clamping voltage (VC) of 96.8 V when subjected to a 100 A peak impulse current (IPP) under 10/1000 μs waveform conditions. This value is measured across both terminals in bidirectional mode and ensures downstream circuitry remains within safe voltage limits during high-energy transients such as lightning-induced surges.
Is MAPLAD18KP60CA compliant with RTCA DO-160F Section 22 for lightning protection?
Yes, MAPLAD18KP60CA is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) at Level 4. Its 18,000 W peak pulse power rating, low thermal resistance (0.7 °C/W), and bidirectional symmetry make it suitable for primary and secondary lightning protection in certified aircraft systems.
Does MAPLAD18KP60CA require dry pack packaging or moisture sensitivity handling?
No, MAPLAD18KP60CA is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it does not require dry pack packaging or floor-life controls. This simplifies manufacturing logistics and eliminates bake-out steps prior to reflow soldering in high-volume SMT production.
What is the thermal resistance profile of MAPLAD18KP60CA, and how does it impact multi-pulse operation?
MAPLAD18KP60CA has a junction-to-case thermal resistance (RθJC) of 0.7 °C/W and junction-to-ambient (RθJA) of 50 °C/W when mounted on FR4 with recommended pad layout. This low RθJC enables effective heat dissipation during repetitive surges, supporting >0.05% duty cycle operation per DO-160F Section 22 - critical for sustained lightning strike scenarios.
Can MAPLAD18KP60CA be used in automotive applications, and what qualifications does it hold?
Yes, MAPLAD18KP60CA is qualified to AEC-Q101 for discrete semiconductors and supports automotive load dump protection per ISO 7637-2. Its 60 V VWM and 18,000 W PPP rating make it suitable for 42 V and 48 V mild-hybrid and electric vehicle power systems where high-energy transient immunity is required.
MAPLAD18KP60CA 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):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 186A
- Power - Peak Pulse:
- 18000W (18kW)
- 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
MAPLAD18KP60CA FAQ
1.How can I place an order for MAPLAD18KP60CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP60CA 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 MAPLAD18KP60CA reliable?
The price and inventory of MAPLAD18KP60CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP60CA is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP60CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP60CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP60CA?
MAPLAD18KP60CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP60CA 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 MAPLAD18KP60CA?
For technical support, including MAPLAD18KP60CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP60CA requirements.
6.How does Aetrix verify that MAPLAD18KP60CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP60CA 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 MAPLAD18KP60CA meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP60CA?
All MAPLAD18KP60CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP60CA, 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 MAPLAD18KP60CA part is unused and in its original packaging.
Return procedure for MAPLAD18KP60CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP60CA Tags
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