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Microchip Technology MAPLAD18KP10CAE3
- Part No.:
- MAPLAD18KP10CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP10CAE3.pdf
- Description:
- TVS DIODE 10VWM 17VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,352
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Product details
Overview
MAPLAD18KP10CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial systems. It delivers 18,000 W peak pulse power at 10/1000 μs, clamps transients to ≤17.0 V at 1059 A, and features a 10 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (11.1–12.3 V). It is qualified to AEC-Q101 and meets RTCA DO-160F Level 4 pin injection for Waveform 4.
For engineers reviewing the MAPLAD18KP10CAE3 datasheet, MAPLAD18KP10CAE3 pinout, MAPLAD18KP10CAE3 application, or MAPLAD18KP10CAE3 equivalent, key selection criteria include its bidirectional polarity, 10 V VWM rating, 17.0 V max clamping voltage at 1059 A, RoHS-compliant e3 plating, and qualification for multi-stroke lightning protection per IEC 61000-4-5 with 42 Ω source impedance.
Technical Context
The MAPLAD18KP10CAE3 employs an avalanche diode structure optimized for low clamping ratio and minimal thermal resistance (RθJC = 0.7 °C/W), enabling rapid energy dissipation during high-current transients such as lightning-induced surges or automotive load dump events. Its void-free UL94V-0 epoxy package and metal-base cathode configuration support direct thermal coupling to PCB copper planes.
It operates across –55 °C to +150 °C junction temperature, supports steady-state power dissipation of 2.5 W at 25 °C ambient, and exhibits a temperature coefficient of breakdown voltage (αV(BR)) of +9.0 mV/°C - critical for stable clamping performance under thermal cycling in avionics and engine bay environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) min/max | 11.1–12.3 V @ I(BR) - guaranteed avalanche onset range ensures predictable turn-on margin above operating voltage |
| VC @ IPP | 17.0 V max @ 1059 A - clamping voltage limits downstream IC stress during 10/1000 μs surge events |
| PPP | 18,000 W @ 10/1000 μs - enables single-device protection against severe lightning transients per DO-160 Section 22 |
| ID @ VWM | 45 μA max - ultra-low leakage preserves signal integrity and battery life in always-on systems |
| RθJC | 0.7 °C/W - allows efficient heat transfer to heatsink or large copper pour, reducing thermal derating impact |
| Polarity | Bidirectional - protects AC-coupled lines or bidirectional data buses (e.g., RS-485, CAN FD) without polarity constraints |
Pinout & Package
MAPLAD18KP10CAE3 uses a surface-mount PLAD package with two terminals: anode and cathode. The cathode is the metal base (bottom side), electrically connected to the case and thermally coupled to PCB copper. The anode is the top-side metallized pad. This dual-role terminal design enables both electrical clamping and thermal conduction through the same metal base.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top pad) | Transient current entry point for positive surges (bidirectional mode) | Connects to protected line; carries full IPP during clamping; requires adequate trace width for 1059 A surge |
| Cathode (metal base) | Common reference and thermal path | Serves as return path for both polarities; must be soldered to ≥1 in² copper area for RθJA ≤50 °C/W |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetric clamping on AC signals or differential buses without external polarity management |
| 18 kW peak pulse rating | Meets RTCA DO-160F Section 22 multi-stroke lightning requirements for commercial aircraft systems |
| RoHS-compliant e3 plating | Matte-tin termination ensures reliable solderability and compatibility with lead-free reflow profiles (260 °C/10 s) |
| AEC-Q101 qualification | Validates robustness for automotive under-hood applications including load dump and jump-start transients |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and floor-life constraints, simplifying SMT assembly logistics |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power inputs in flight control computers subjected to DO-160F Waveform 4 (6.4/69 μs) lightning-induced transients. IC Role / Device Role / Timing Role: Primary transient suppression device placed upstream of DC-DC converters and voltage regulators. Use Value: Limits input voltage to ≤17.0 V during 1059 A surges, preventing latch-up or burnout of downstream PMICs and microcontrollers. | Use Scenario: Guarding 12 V supply rails in diesel ECU modules exposed to ISO 7637-2 Load Dump pulses (up to 60 V, 400 ms). IC Role / Device Role / Timing Role: High-energy clamp absorbing >95% of surge energy before it reaches sensitive analog front-ends and CAN transceivers. Use Value: Withstands repeated 18 kW surges while maintaining <45 μA leakage, ensuring long-term reliability without degrading sensor bias networks. |
| Industrial RS-485 Communication Port | Renewable Energy Inverter DC Link |
Use Scenario: Bidirectional protection of half-duplex RS-485 transceivers in wind turbine SCADA networks subject to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS array element providing symmetrical clamping on A/B differential pair. Use Value: Clamps both polarities to ≤17.0 V within <5 ns, preserving signal integrity and preventing transceiver damage during multi-kA induced transients. | Use Scenario: Secondary surge protection on 600 V DC link of solar inverters, supplementing MOV-based primary protection against grid-switching transients. IC Role / Device Role / Timing Role: Fast-response clamp limiting overvoltage spikes to safe levels for IGBT gate drivers and DC-link capacitors. Use Value: Delivers 18 kW pulse handling with 0.7 °C/W thermal resistance, enabling direct mounting to heatsink-equipped busbars for sustained thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA | 600 W PPP rating, 5.0 mm × 4.6 mm SMB package, 17.0 V VC @ 32.4 A | Rated only for IEC 61000-4-5 Class 2 (not Class 4/5); unsuitable for DO-160F Level 4/5 | Select when cost-sensitive, lower-energy applications require compact footprint and do not demand aerospace-grade surge capacity. |
| SMCJ10CA | 1500 W PPP rating, 7.1 mm × 6.2 mm SMC package, 17.0 V VC @ 87.1 A | Lacks AEC-Q101 qualification and DO-160F Waveform 4/5 validation; limited to industrial/commercial use | Choose for general-purpose industrial equipment where 18 kW capability is unnecessary and board space permits larger SMC outline. |
Compared with SMBJ10CA and SMCJ10CA, MAPLAD18KP10CAE3 provides 30× and 12× higher peak pulse power respectively, validated clamping response for aviation lightning standards, and AEC-Q101 qualification - making it the only option among the three suitable for certified airborne and high-reliability automotive power systems.
Availability
MAPLAD18KP10CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power protection, and industrial RS-485 communication ports requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD18KP10CAE3 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, communications, and industrial markets, with emphasis on radiation-hardened ICs, timing devices, and power protection components.
The MPLAD family was developed specifically for high-energy transient suppression in safety-critical platforms, combining ultra-low thermal resistance packaging with AEC-Q101 and DO-160F compliance to meet stringent aviation and automotive qualification requirements.
FAQ
What is the clamping voltage specification for MAPLAD18KP10CAE3 under standard test conditions?
The MAPLAD18KP10CAE3 has a maximum clamping voltage (VC) of 17.0 V at 1059 A peak pulse current under 10/1000 μs waveform conditions. This value is measured across the device terminals during surge testing and defines the upper voltage limit imposed on protected circuitry during transient events. The low clamping ratio (VC/VWM ≈ 1.7) ensures effective protection of 12 V systems without overstressing downstream components.
Is MAPLAD18KP10CAE3 qualified for automotive applications?
Yes, MAPLAD18KP10CAE3 is AEC-Q101 qualified, confirming its suitability for automotive electronic systems. It is specifically rated for load dump protection in engine control units and other under-hood modules. Its 10 V VWM and 17.0 V clamping voltage align with 12 V vehicle electrical architecture requirements, and its thermal resistance (0.7 °C/W) supports operation in high-temperature engine bay environments up to +150 °C junction temperature.
Does MAPLAD18KP10CAE3 meet RTCA DO-160F lightning protection requirements?
Yes, MAPLAD18KP10CAE3 is validated for RTCA DO-160F Section 22 lightning-induced transient testing. It achieves Level 4 for Waveform 4 (6.4/69 μs) and supports multi-stroke capability required for aircraft systems. Its 18,000 W peak pulse power rating and bidirectional construction ensure robust protection against both polarities of lightning-induced surges on power and signal lines in certified avionics installations.
What is the meaning of the "CA" and "E3" suffixes in MAPLAD18KP10CAE3?
In MAPLAD18KP10CAE3, "CA" denotes bidirectional polarity (as opposed to "A" for unidirectional), and "E3" specifies RoHS-compliant matte-tin plating per JEDEC J-STD-020B Level 1 moisture sensitivity. The "CA" suffix confirms symmetrical clamping behavior essential for AC-coupled or differential interfaces, while "E3" guarantees compatibility with lead-free reflow processes and eliminates dry-pack storage requirements.
How does the thermal design of MAPLAD18KP10CAE3 differ from standard SMB/SMC TVS diodes?
MAPLAD18KP10CAE3 features a metal-base package with RθJC = 0.7 °C/W - over 10× lower than typical SMB (≈15 °C/W) or SMC (≈5 °C/W) packages. Its cathode serves as both electrical return and primary thermal path, requiring direct soldering to large copper areas or heatsinks. This architecture enables sustained 18 kW surge handling without thermal runaway, unlike conventional surface-mount TVS diodes limited by plastic-body thermal bottlenecks.
MAPLAD18KP10CAE3 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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 1059A (1.059kA)
- 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
MAPLAD18KP10CAE3 FAQ
1.How can I place an order for MAPLAD18KP10CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP10CAE3 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 MAPLAD18KP10CAE3 reliable?
The price and inventory of MAPLAD18KP10CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP10CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP10CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP10CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP10CAE3?
MAPLAD18KP10CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP10CAE3 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 MAPLAD18KP10CAE3?
For technical support, including MAPLAD18KP10CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP10CAE3 requirements.
6.How does Aetrix verify that MAPLAD18KP10CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP10CAE3 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 MAPLAD18KP10CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP10CAE3?
All MAPLAD18KP10CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP10CAE3, 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 MAPLAD18KP10CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP10CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP10CAE3 Tags
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