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Microchip Technology MAPLAD18KP16AE3
- Part No.:
- MAPLAD18KP16AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP16AE3.pdf
- Description:
- TVS DIODE 16VWM 26VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,903
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Product details
Overview
MAPLAD18KP16AE3 from Microsemi is a unidirectional 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 16 V reverse standoff voltage (VWM), clamps to ≤26.0 V at 693 A peak impulse current (IPP), and exhibits 0.7 °C/W junction-to-case thermal resistance for efficient heat dissipation in lightning and load-dump protection circuits.
For engineers reviewing the MAPLAD18KP16AE3 datasheet, MAPLAD18KP16AE3 pinout, MAPLAD18KP16AE3 application, or MAPLAD18KP16AE3 equivalent, this device is selected for RTCA DO-160 Section 22 multi-stroke lightning compliance, IEC 61000-4-5 secondary lightning protection (42 Ω, 12 Ω, and 2 Ω source impedances), and pin-injection immunity per Waveform 4 and 5A - critical for avionics power bus and engine control unit interfaces.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector with avalanche breakdown behavior. Its unidirectional polarity places the cathode on the metal base (package bottom), enabling low-inductance mounting directly to heatsinks or ground planes. The device meets AEC-Q101 stress testing and supports MIL-PRF-19500 upscreening options for high-reliability programs.
It is rated for -55°C to +150°C junction temperature, achieves <100 ps response time from 0 V to V(BR) min, and maintains 5.0 mV/°C temperature coefficient of breakdown voltage - ensuring stable clamping across wide thermal operating ranges in engine bay or flight deck environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - enables single-device suppression of aircraft lightning transients per DO-160F Section 22. |
| Reverse Standoff Voltage (VWM) | 16 V - matches nominal 12 V automotive and avionics power rails while allowing margin before clamping onset. |
| Clamping Voltage (VC) | ≤26.0 V @ IPP = 693 A - limits downstream IC stress below 30 V during 10/1000 μs surges. |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - allows direct thermal coupling to PCB copper or external heatsink for sustained multi-pulse operation. |
| Breakdown Voltage (V(BR)) | 17.8–19.7 V @ I(BR) - ensures reliable turn-on above VWM with defined margin for production variation. |
| Standby Current (ID) | ≤10 μA @ VWM - minimizes leakage-induced power loss in always-on vehicle subsystems. |
| Response Time | <100 ps - provides sub-nanosecond protection against fast-rising ESD and RFI-induced transients. |
Pinout & Package
The MAPLAD18KP16AE3 uses a surface-mount plastic package with void-free UL94V-0 epoxy body and tin-lead or RoHS-compliant matte-tin plating. The cathode is the metal base (bottom side), and the anode is the top-side metallized pad - requiring orientation-aware PCB layout with thermal pad connected to ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and low-inductance return node; must be soldered to large copper area or heatsink. |
| Top Metallized Pad | Anode | Input connection point for protected line; minimal trace length required to preserve fast response. |
Key Features
| Feature | Design Value |
|---|---|
| DO-160F Waveform 4 & 5A Compliance | Level 4 (7.0–200 V) and Level 5 (7.0–130 V) pin injection protection - validated for avionics data and power lines. |
| IEC 61000-4-5 Lightning Protection | Class 1–5 support with 42 Ω, 12 Ω, and 2 Ω source impedances - covers primary and secondary protection tiers in airborne systems. |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - eliminates dry-pack requirement and simplifies SMT assembly logistics. |
| AEC-Q101 Qualification | Qualified for automotive underhood applications including alternator load dump and battery reversal events. |
| Thermal Performance | RθJC = 0.7 °C/W - enables >10× higher power handling than standard SMA packages under identical board conditions. |
Applications
| Avionics Power Bus Protection | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC distribution buses in commercial aircraft against induced lightning currents per DO-160F Section 22. IC Role / Device Role / Timing Role: Primary clamping TVS placed at bus entry point to limit voltage excursion to ≤26 V during multi-stroke events. Use Value: Enables compliance with RTCA DO-160F Level 4/5 pin injection and Class 4/5 lightning without cascaded protection stages. | Use Scenario: Safeguarding microcontroller power inputs in diesel engine ECUs exposed to 12 V load dump transients exceeding 100 V. IC Role / Device Role / Timing Role: Unidirectional TVS mounted directly at power input connector to clamp surges before LDO regulators. Use Value: Withstands 18 kW pulses while maintaining <10 μA leakage - preserving battery life in always-on vehicle modules. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Suppressing switching transients on 48 V DC link rails in variable-frequency drives subjected to IGBT commutation noise. IC Role / Device Role / Timing Role: High-power TVS placed across DC bus capacitors to absorb repetitive 10/1000 μs energy bursts. Use Value: 0.7 °C/W RθJC allows continuous operation at 0.05% duty cycle without derating - eliminating need for active cooling. | Use Scenario: Shielding 24 V signaling lines in European railway signaling cabinets from EFT bursts per EN 50121-3-2. IC Role / Device Role / Timing Role: Bidirectional-capable variant (MAPLAD18KP16CA) used for AC-coupled data lines; MAPLAD18KP16AE3 serves DC bias rails. Use Value: Meets IEC 61000-4-4 Level 4 (4 kV) and IEC 61000-4-5 Class 3 (1 kV) with no additional filtering components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | 600 W PPP rating, 100 cm² thermal pad required for 18 kW capability, 40 ns response time | Limited to single-stroke events; not qualified for DO-160F multi-stroke or AEC-Q101 | Select when cost sensitivity outweighs aerospace/automotive qualification requirements |
| SMCJ16A | 1500 W PPP, TO-277 package, RθJC ≈ 2.5 °C/W, 10× lower energy handling | Suitable only for non-critical industrial I/O protection; fails DO-160F Section 22 validation | Choose for legacy designs where footprint compatibility with SMC package is mandatory |
Compared with SMBJ16A and SMCJ16A, MAPLAD18KP16AE3 delivers 30× higher peak pulse power in the same surface-mount footprint, supports certified multi-stroke lightning immunity, and provides 3.6× better thermal resistance - making it the sole option for new avionics and high-end automotive power rail designs requiring DO-160F or AEC-Q101 compliance.
Availability
MAPLAD18KP16AE3 is available at Aetrix Electronics and suitable for avionics power bus protection, automotive ECU surge suppression, and industrial motor drive DC link stabilization requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for safety-critical deployments.
Supply support for MAPLAD18KP16AE3 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 (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 PLAD family was engineered specifically for high-energy transient suppression in mission-critical platforms - emphasizing low thermal resistance, multi-stroke survivability, and qualification to DO-160, AEC-Q101, and MIL-PRF-19500 standards.
FAQ
What is the clamping voltage of MAPLAD18KP16AE3 at its rated peak pulse current?
The MAPLAD18KP16AE3 has a maximum clamping voltage (VC) of 26.0 V at its rated peak impulse current (IPP) of 693 A under 10/1000 μs waveform conditions. This value is guaranteed across the full operating temperature range and ensures protected circuitry remains below 30 V during worst-case transients - critical for safeguarding 28 V avionics and 12 V automotive electronics.
Is MAPLAD18KP16AE3 compliant with RoHS and lead-free assembly requirements?
Yes, MAPLAD18KP16AE3 carries the "E3" suffix indicating full RoHS compliance per EU Directive 2011/65/EU. Its terminations use annealed matte-tin plating compatible with lead-free reflow profiles up to 260°C for 10 seconds, and it meets IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1 - eliminating dry-pack requirements and supporting standard SMT manufacturing flows.
How does the thermal performance of MAPLAD18KP16AE3 compare to standard SMB or SMC TVS diodes?
MAPLAD18KP16AE3 achieves a junction-to-case thermal resistance (RθJC) of 0.7 °C/W - over 3× lower than typical SMCJ devices (~2.5 °C/W) and ~10× better than SMBJ packages. This enables direct mounting to heatsinks or large PCB copper areas, sustaining repeated 18 kW pulses without thermal runaway - a capability absent in conventional surface-mount TVS offerings.
Does MAPLAD18KP16AE3 meet RTCA DO-160F Section 22 lightning test requirements?
Yes, MAPLAD18KP16AE3 is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. Its 18,000 W peak pulse power rating, sub-100 ps response time, and low RθJC allow it to pass Level 4 and Level 5 pin injection tests (Waveforms 4 and 5A) and withstand cumulative energy deposition across multiple strokes - a key differentiator for certified aircraft equipment.
What is the polarity configuration and physical orientation requirement for MAPLAD18KP16AE3?
MAPLAD18KP16AE3 is a unidirectional TVS with cathode assigned to the metal base (bottom side) and anode on the top metallized pad. Correct orientation requires the metal base to be soldered to a grounded thermal pad or heatsink, while the top pad connects to the line being protected - reversing polarity will prevent proper clamping and may cause catastrophic failure during surge events.
MAPLAD18KP16AE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 693A
- 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
MAPLAD18KP16AE3 FAQ
1.How can I place an order for MAPLAD18KP16AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP16AE3 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 MAPLAD18KP16AE3 reliable?
The price and inventory of MAPLAD18KP16AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP16AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP16AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP16AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP16AE3?
MAPLAD18KP16AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP16AE3 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 MAPLAD18KP16AE3?
For technical support, including MAPLAD18KP16AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP16AE3 requirements.
6.How does Aetrix verify that MAPLAD18KP16AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP16AE3 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 MAPLAD18KP16AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP16AE3?
All MAPLAD18KP16AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP16AE3, 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 MAPLAD18KP16AE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP16AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP16AE3 Tags
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