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Microchip Technology MAPLAD18KP14CAE3
- Part No.:
- MAPLAD18KP14CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP14CAE3.pdf
- Description:
- TVS DIODE 14VWM 23.2VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,482
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Product details
Overview
MAPLAD18KP14CAE3 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 ≤23.2 V under 776 A peak impulse current, and features a 14 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (15.6–17.2 V). It is qualified to AEC-Q101 and meets RTCA DO-160F Level 4 pin injection for aircraft avionics.
For engineers reviewing the MAPLAD18KP14CAE3 datasheet, MAPLAD18KP14CAE3 pinout, MAPLAD18KP14CAE3 application, or MAPLAD18KP14CAE3 equivalent, key selection criteria include its bidirectional polarity, low thermal resistance (RθJC = 0.7 °C/W), RoHS-compliant e3 plating, IEC 61000-4-5 Class 4 secondary lightning protection (42 Ω source), and validated performance under multi-stroke lightning stress per DO-160 Section 22.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered by avalanche breakdown, with symmetrical bidirectional conduction enabling protection of AC-coupled or differential signal lines without polarity concerns. Its metal-base package provides direct thermal path to PCB copper, supporting high-repetition surges when mounted on FR4 with recommended pad layout.
The device complies with IEC 61000-4-2 ESD (±30 kV air/±30 kV contact), IEC 61000-4-4 EFT (40 A), and IEC 61000-4-5 surge (up to Class 5 with 42 Ω source), while maintaining <10 μA standby current at 14 V and exhibiting +13 mV/°C temperature coefficient of breakdown voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 18,000 W - sustains full-rated lightning surge energy without failure |
| Reverse Standoff Voltage (VWM) | 14 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 15.6–17.2 V @ I(BR) - precise avalanche threshold ensuring predictable turn-on |
| Max Clamping Voltage (VC) | 23.2 V @ 776 A - limits downstream circuit voltage during worst-case surge |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables efficient heat transfer to heatsink or copper plane |
| Standby Current (ID) | ≤10 μA @ 14 V - negligible leakage in normal operation, preserving system efficiency |
| Temperature Coefficient (αV(BR)) | +13 mV/°C - stable breakdown shift across -55°C to +150°C operating range |
Pinout & Package
MAPLAD18KP14CAE3 uses a surface-mount PLAD package with metal base acting as cathode terminal for bidirectional operation; polarity is symmetric, eliminating orientation constraints during placement. The thermally optimized design features void-free UL94V-0 epoxy body and annealed matte-tin (e3) plating compliant with RoHS and MIL-STD-750 solderability requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode / Common Terminal | Serves as primary thermal interface and symmetrical conduction path for both polarities |
| Top Surface Pads (Dual) | Anode / Symmetric Input | Provides identical electrical access points; no polarity marking required for bidirectional use |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Surge Protection | Enables single-device protection of AC lines, differential buses, or ungrounded interfaces without polarity risk |
| RTCA DO-160F Waveform 4 Compliance (Level 4) | Validated for 6.4/69 μs pin injection transients in aircraft avionics, including flight control and navigation systems |
| AEC-Q101 Qualification | Guarantees reliability under automotive temperature cycling, mechanical shock, and humidity testing |
| IEC 61000-4-5 Class 4 Support (42 Ω) | Meets stringent secondary lightning immunity for industrial control cabinets and ground vehicle ECUs |
| Low RθJC (0.7 °C/W) | Permits sustained multi-pulse operation on standard FR4 with minimal derating versus ceramic substrates |
Applications
| Avionics Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC power inputs in airborne mission computers against DO-160 Section 22 multi-stroke lightning events. IC Role / Device Role / Timing Role: Primary transient shunt clamp placed directly at connector entry point before DC-DC converters. Use Value: Prevents latch-up or burnout in downstream PMICs by limiting transient voltage to ≤23.2 V during 18 kW surges. | Use Scenario: Safeguarding CAN FD and LIN bus transceivers in engine bay ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional line protector on data bus pairs, absorbing coupled transients without signal inversion. Use Value: Maintains bus integrity during 12 V system load dump (ISO 7637-2 Pulse 5a) with no data corruption or reset events. |
| Industrial Motor Drive I/O | Railway Signaling Interface |
Use Scenario: Shielding analog sensor inputs (e.g., current shunt monitors) in variable-frequency drives from switching-induced RFI and EFT bursts. IC Role / Device Role / Timing Role: Low-leakage (≤10 μA) front-end clamp preserving 16-bit ADC accuracy during EMC immunity tests. Use Value: Eliminates offset drift and measurement errors caused by sub-μs EFT coupling into precision signal chains. | Use Scenario: Securing Ethernet PHY interfaces in wayside signaling controllers subjected to IEC 61000-4-5 surge events in outdoor rail environments. IC Role / Device Role / Timing Role: Secondary surge limiter after gas discharge tube (GDT), handling residual energy with fast <5 ns response. Use Value: Reduces clamping overshoot below 23.2 V to prevent PHY IC damage while meeting EN 50121-4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14CA | 600 W PPP rating, 5.0 mm × 3.5 mm SMB package, RθJC ≈ 25 °C/W | Limited to single-stroke surges; unsuitable for DO-160 multi-stroke or repeated load dump cycles | Select only for cost-sensitive consumer-grade designs with lower energy threats |
| SMCJ14CA | 1500 W PPP rating, larger SMC package, RθJC ≈ 12 °C/W, no AEC-Q101 or DO-160 validation | Requires external thermal management for >100 A impulses; lacks aviation qualification documentation | Acceptable for industrial PLC I/O where DO-160 compliance is not mandated |
Compared with SMBJ14CA and SMCJ14CA, MAPLAD18KP14CAE3 delivers 30× higher pulse power handling, certified multi-stroke endurance, and documented DO-160F Level 4 and AEC-Q101 compliance-making it the sole choice for safety-critical aerospace and automotive power line protection where failure is not an option.
Availability
MAPLAD18KP14CAE3 is available at Aetrix Electronics and suitable for avionics power distribution, automotive ECU protection, and industrial motor drive I/O requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD18KP14CAE3 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 MAPLAD series was engineered specifically for high-energy transient suppression in mission-critical platforms, emphasizing thermal robustness, multi-stroke survivability, and regulatory compliance for aviation and automotive safety standards.
FAQ
What does the 'CA' suffix indicate in MAPLAD18KP14CAE3?
The 'CA' suffix in MAPLAD18KP14CAE3 denotes bidirectional polarity, meaning the device provides symmetrical clamping for both positive and negative transients. This eliminates the need for polarity-aware placement on PCBs and supports protection of AC-coupled or differential interfaces such as CAN, RS-485, or Ethernet PHY lines without additional circuitry.
Is MAPLAD18KP14CAE3 qualified for automotive applications?
Yes, MAPLAD18KP14CAE3 is fully qualified to AEC-Q101 for automotive use. It has undergone temperature cycling, mechanical shock, humidity testing, and high-temperature operating life validation. Its 14 V VWM and 23.2 V clamping voltage align with 12 V system load dump requirements, and its RoHS-compliant e3 plating ensures compatibility with modern automotive assembly processes.
How does MAPLAD18KP14CAE3 meet RTCA DO-160F Section 22 lightning requirements?
MAPLAD18KP14CAE3 meets RTCA DO-160F Section 22 multi-stroke lightning standards through its 18,000 W peak pulse power rating at 10/1000 μs, validated thermal design (RθJC = 0.7 °C/W), and documented performance under repeated waveform application. Its low clamping voltage (≤23.2 V) and fast response (<5 ns) ensure protected circuits remain within safe operating limits across multiple strokes without degradation.
What is the significance of the 'e3' suffix in MAPLAD18KP14CAE3?
The 'e3' suffix in MAPLAD18KP14CAE3 indicates RoHS-compliant annealed matte-tin plating on terminals, fully compliant with EU Directive 2011/65/EU. This plating ensures reliable solderability per MIL-STD-750 Method 2026, eliminates lead content, and supports Pb-free reflow profiles up to 260°C for 10 seconds-critical for high-reliability aerospace and automotive manufacturing.
Can MAPLAD18KP14CAE3 be used for IEC 61000-4-5 surge protection?
Yes, MAPLAD18KP14CAE3 is rated for IEC 61000-4-5 Class 4 secondary lightning protection with 42 Ω source impedance, delivering ≤23.2 V clamping at 776 A. It also supports Class 2 and 3 with 12 Ω and 2 Ω sources, making it suitable for industrial control cabinet inputs, railway signaling interfaces, and telecom power supplies where standardized surge immunity is mandatory.
MAPLAD18KP14CAE3 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 776A
- 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
MAPLAD18KP14CAE3 FAQ
1.How can I place an order for MAPLAD18KP14CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP14CAE3 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 MAPLAD18KP14CAE3 reliable?
The price and inventory of MAPLAD18KP14CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP14CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP14CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP14CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP14CAE3?
MAPLAD18KP14CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP14CAE3 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 MAPLAD18KP14CAE3?
For technical support, including MAPLAD18KP14CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP14CAE3 requirements.
6.How does Aetrix verify that MAPLAD18KP14CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP14CAE3 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 MAPLAD18KP14CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP14CAE3?
All MAPLAD18KP14CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP14CAE3, 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 MAPLAD18KP14CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP14CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP14CAE3 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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