My Inquiry
My Account
Microchip Technology MAPLAD18KP11CAE3
- Part No.:
- MAPLAD18KP11CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP11CAE3.pdf
- Description:
- TVS DIODE 11VWM 18.2VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,685
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAPLAD18KP11CAE3 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, features a 11 V reverse standoff voltage (VWM), clamps to ≤18.2 V at 989 A peak impulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements. It is used in aircraft avionics power inputs and automotive ECU front-end protection.
For engineers reviewing the MAPLAD18KP11CAE3 datasheet, MAPLAD18KP11CAE3 pinout, MAPLAD18KP11CAE3 application, or MAPLAD18KP11CAE3 equivalent, key selection criteria include its bidirectional polarity, 18 kW PPP rating, 11 V VWM, IEC 61000-4-5 Class 4 compliance with 42 Ω source impedance, and RTCA/DO-160F Waveform 4 Level 4 qualification up to 200 V VWM.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating when transient voltage exceeds its breakdown threshold (V(BR) = 12.2–13.5 V). Its low thermal resistance (RθJC = 0.7 °C/W) enables rapid heat dissipation into the PCB copper pad or heatsink, critical for repetitive surge events.
It supports both unidirectional and bidirectional configurations - MAPLAD18KP11CAE3 uses bidirectional construction (CA suffix), making it suitable for AC-coupled or differential signal lines where polarity reversal must be tolerated without damage. Clamping response time is <5 ns, ensuring fast suppression of EFT and lightning-induced transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous operating voltage before clamping begins; matches nominal 12 V automotive or avionics bus systems. |
| V(BR) @ I(BR) | 12.2–13.5 V - Breakdown occurs within this range at 5 mA test current; ensures reliable turn-on margin above VWM. |
| VC @ IPP | ≤18.2 V at 989 A - Maximum clamped voltage during 10/1000 μs surge; limits downstream IC stress to safe levels. |
| PPP | 18,000 W @ 10/1000 μs - Sustains high-energy lightning surges without failure; validated per RTCA DO-160F Section 22. |
| ID @ VWM | ≤10 μA - Ultra-low leakage at rated standoff voltage; prevents unnecessary power drain in always-on systems. |
| RθJC | 0.7 °C/W - Enables efficient junction-to-case heat transfer; requires direct thermal pad connection to PCB copper for full rating. |
| Package | PLAD - Surface-mount thermoset epoxy package with metal base cathode; optimized for low-inductance, high-current surge paths. |
Pinout & Package
The MAPLAD18KP11CAE3 uses the PLAD package: a low-profile, void-free thermosetting epoxy body with metal base (cathode) and two solderable terminals on the top surface. The metal base serves as the cathode terminal and provides primary thermal conduction path to the PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Top Anode Pad | Anode (A) | Connects to line being protected; forms one side of bidirectional clamping path. |
| Metal Base (Bottom) | Cathode (K) | Serves as common return path and primary thermal interface; must be soldered to large copper pour for RθJC = 0.7 °C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC or differential signals without polarity sensitivity; eliminates need for dual unidirectional devices. |
| RTCA DO-160F Waveform 4 Level 4 | Withstands 6.4/69 μs pin-injection transients up to 11 V VWM devices - certified for aircraft avionics I/O protection. |
| IEC 61000-4-5 Class 4 (42 Ω) | Rated for secondary lightning protection in industrial and transport equipment with defined source impedance. |
| Moisture Sensitivity Level 1 | No dry pack or baking required before reflow; simplifies manufacturing and reduces handling cost. |
| AEC-Q101 qualified | Validated for automotive underhood and powertrain applications requiring robust surge immunity and reliability. |
Applications
| Aircraft Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power input to flight management computers against lightning-induced surges per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS placed upstream of DC/DC converter input to clamp transients before they reach sensitive regulation circuitry. Use Value: Ensures system-level compliance with multi-stroke lightning standard while maintaining ≤18.2 V clamping to prevent overvoltage damage to downstream ICs. | Use Scenario: Front-end surge protection for 12 V battery-fed engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing >1000 A transients within <5 ns to limit bus voltage excursion during alternator disconnection events. Use Value: Prevents latch-up or destruction of microcontrollers and CAN transceivers by holding rail voltage below 20 V during 18 kW surge events. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Protection of 48 V DC bus in variable-frequency drives against switching transients and induced RFI from IGBT commutation. IC Role / Device Role / Timing Role: High-power TVS shunting inductive kickback energy away from gate drivers and current sensors during rapid motor deceleration. Use Value: Maintains system uptime by preventing repeated failures caused by cumulative thermal stress from repetitive 10/1000 μs surges. | Use Scenario: Surge protection for 72 V signaling lines in train control systems subject to IEC 61000-4-5 Class 4 lightning coupling via track induction. IC Role / Device Role / Timing Role: Bidirectional TVS deployed on isolated RS-485 or MVB interfaces to suppress common-mode transients without disrupting data integrity. Use Value: Achieves fail-safe operation under 42 Ω source impedance testing while supporting long cable runs with minimal signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | 600 W PPP rating, SMB package, 11 V VWM, bidirectional; lacks RTCA DO-160F certification and 18 kW capability. | Targeted at consumer/industrial electronics with lower surge threat profiles; not suitable for aviation or automotive load dump. | Select SMBJ11CA only for cost-sensitive, non-safety-critical designs where peak surge energy remains below 1 kA. |
| SMCJ11CA | 1500 W PPP rating, SMC package, same VWM; higher power than SMBJ but still 12× lower than MAPLAD18KP11CAE3. | Used in mid-tier industrial controls; does not meet DO-160F Waveform 4 Level 4 or IEC 61000-4-5 Class 4 with 42 Ω source. | Choose SMCJ11CA for space-constrained boards needing >600 W but lacking aerospace qualification requirements. |
Compared with SMBJ11CA and SMCJ11CA, MAPLAD18KP11CAE3 delivers 30× and 12× higher peak pulse power respectively, enabling compliance with aviation lightning standards and automotive load dump tests - essential where single-event survivability and multi-stroke endurance are mission-critical.
Availability
MAPLAD18KP11CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU, industrial motor drive, and railway signaling applications requiring stable component supply, long-term lifecycle support, and certified surge immunity.
Supply support for MAPLAD18KP11CAE3 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, timing, and power solutions for aerospace, defense, and industrial markets.
The MAPLAD18KP11CAE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for lightning and load dump protection in safety-critical systems where multi-stroke endurance and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of MAPLAD18KP11CAE3 at its rated peak pulse current?
The MAPLAD18KP11CAE3 has a maximum clamping voltage (VC) of 18.2 V at its peak impulse current (IPP) of 989 A under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and guarantees that downstream circuitry remains below destructive voltage thresholds during high-energy transients. The MAPLAD18KP11CAE3 achieves this while maintaining bidirectional symmetry and sub-5 ns response time.
Is MAPLAD18KP11CAE3 certified for RTCA DO-160F lightning testing?
Yes, MAPLAD18KP11CAE3 is qualified for RTCA DO-160F Section 22 multi-stroke lightning testing and specifically certified for Waveform 4 (6.4/69 μs) Level 4 protection across its VWM range including 11 V. This certification is documented in Microsemi's RF01215 Rev B datasheet and confirms suitability for aircraft avionics power and signal line protection where repeated surge exposure is expected.
What is the thermal resistance and recommended mounting for MAPLAD18KP11CAE3?
The MAPLAD18KP11CAE3 has a junction-to-case thermal resistance (RθJC) of 0.7 °C/W, achieved only when the metal base (cathode) is soldered to a minimum 1.0 in² copper pad on FR4 PCB per the recommended pad layout. This thermal path is essential to sustain its 18,000 W peak pulse rating. Without proper copper area, derating is required per Figure 3 in the MAPLAD18KP11CAE3 datasheet.
Does MAPLAD18KP11CAE3 meet automotive AEC-Q101 requirements?
Yes, MAPLAD18KP11CAE3 is tested and qualified to AEC-Q101 standards for discrete semiconductors, confirming its reliability for automotive underhood and powertrain applications. This includes temperature cycling, humidity bias, and surge testing - validating its use in engine control units, battery management systems, and ADAS modules exposed to harsh electrical environments.
What is the meaning of the 'CA' and 'E3' suffixes in MAPLAD18KP11CAE3?
The 'CA' suffix indicates bidirectional polarity, enabling symmetric clamping for AC or differential lines. The 'E3' suffix denotes RoHS-compliant matte-tin plating per IPC/JEDEC J-STD-020B Level 1 moisture sensitivity - meaning no dry-pack or baking is required prior to reflow soldering. Together, these suffixes define the MAPLAD18KP11CAE3's functional behavior, environmental compliance, and assembly readiness.
MAPLAD18KP11CAE3 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 989A
- 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
MAPLAD18KP11CAE3 FAQ
1.How can I place an order for MAPLAD18KP11CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP11CAE3 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 MAPLAD18KP11CAE3 reliable?
The price and inventory of MAPLAD18KP11CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP11CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP11CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP11CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP11CAE3?
MAPLAD18KP11CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP11CAE3 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 MAPLAD18KP11CAE3?
For technical support, including MAPLAD18KP11CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP11CAE3 requirements.
6.How does Aetrix verify that MAPLAD18KP11CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP11CAE3 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 MAPLAD18KP11CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP11CAE3?
All MAPLAD18KP11CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP11CAE3, 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 MAPLAD18KP11CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP11CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP11CAE3 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
