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Microchip Technology MPLAD18KP16AE3
- Part No.:
- MPLAD18KP16AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP16AE3.pdf
- Description:
- TVS DIODE 16VWM 26VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,682
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Product details
Overview
MPLAD18KP16AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 18,000 W peak pulse power at 10/1000 μs, clamps at ≤26.0 V under 693 A peak impulse current, and features a 16 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (17.8–19.7 V). It is widely deployed in aircraft lightning protection per RTCA DO-160 Section 22 and secondary surge suppression per IEC 61000-4-5.
For engineers reviewing the MPLAD18KP16AE3 datasheet, MPLAD18KP16AE3 pinout, MPLAD18KP16AE3 application, or MPLAD18KP16AE3 equivalent, this device is selected for high-reliability DC bus protection where low thermal resistance (0.7 °C/W junction-to-case), RoHS-compliant matte-tin terminations, and verified multi-stroke lightning compliance are mandatory design requirements.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector, triggered by avalanche breakdown above its specified V(BR) range (17.8–19.7 V). Its metal-base cathode construction enables direct thermal coupling to heatsinks, supporting sustained energy dissipation under repetitive transients at ≤0.05% duty factor.
It meets AEC-Q101 stress testing and supports MIL-PRF-19500 upscreening options (M/MA/MXL levels). The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (lightning) across multiple source impedances (2 Ω, 12 Ω, 42 Ω), with validated pin-injection immunity per RTCA/DO-160F Waveform 4 (Level 4) and Waveform 5A (Level 4).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 18,000 W - sustains full-rated lightning surge without failure under defined waveform and mounting conditions |
| Reverse Standoff Voltage (VWM) | 16 V - maximum continuous DC or peak AC voltage the device blocks without conduction |
| Breakdown Voltage (V(BR)) | 17.8–19.7 V @ I(BR) - precise avalanche onset range ensures predictable turn-on margin above operating rail |
| Max Clamping Voltage (VC) | 26.0 V @ 693 A - limits downstream component stress during worst-case surge events |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables efficient heat transfer to external heatsink or copper pour, critical for multi-pulse reliability |
| Standby Current (ID) | ≤10 μA @ 16 V - negligible leakage preserves system efficiency in always-on applications |
| Moisture Sensitivity Level | Level 1 (per J-STD-020B) - no dry-pack or bake-out required prior to reflow soldering |
Pinout & Package
Package: Surface-mount PLAD (Plastic Low-Profile Anode-Diode) with metal base cathode terminal. Void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.33 mm max), matte-tin plated terminals, polarity marked by cathode on metal bottom surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top metallization) | Positive input terminal for unidirectional surge path | Soldered to PCB trace carrying protected line; forms forward-biased path during negative transients |
| Cathode (metal base) | Ground reference / surge return path | Must be thermally and electrically connected to large copper area or heatsink; primary thermal conduction path |
Key Features
| Feature | Design Value |
|---|---|
| 18 kW peak pulse rating | Enables single-device protection against severe lightning-induced surges per DO-160 Section 22, eliminating cascaded TVS stages |
| 0.7 °C/W RθJC | Reduces junction temperature rise by >70% vs. standard SMD TVS, extending lifetime under repetitive transients |
| RoHS-compliant e3 marking | Meets global environmental compliance without performance trade-offs; annealed matte-tin plating ensures solderability |
| AEC-Q101 qualified | Validated for automotive under-hood environments including thermal cycling, humidity, and mechanical shock |
| RTCA/DO-160F Waveform 4 & 5A compliance | Guarantees immunity to pin-injected transients in avionics systems without additional filtering or shielding |
Applications
| Aircraft Avionics Power Input | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC power entry point in flight control computers subjected to DO-160 Section 22 lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping TVS placed upstream of DC-DC converters and EMI filters. Use Value: Limits transient voltage to ≤26.0 V, protecting downstream ASICs rated for 30 V absolute maximum while surviving ≥100 multi-stroke events. | Use Scenario: 12 V battery-fed engine control unit exposed to ISO 7637-2 Load Dump pulses (up to 120 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional surge clamp on main power rail, coordinated with upstream fuse and downstream L-C filter. Use Value: Clamps 120 V load dump to 26.0 V within <100 ps, preventing latch-up or gate oxide damage in microcontrollers and CAN transceivers. |
| Industrial DC Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: 48 V DC bus in variable-frequency drives where regenerative braking induces switching transients. IC Role / Device Role / Timing Role: Bidirectional-capable but used unidirectionally to absorb inductive kickback from IGBT gate drivers and snubbers. Use Value: Absorbs 18 kW pulses without derating at 25°C ambient, enabling compact layout with minimal heatsink volume. | Use Scenario: 72 V signaling interface in train communication networks requiring IEC 61000-4-5 Class 4 immunity (42 Ω source impedance). IC Role / Device Role / Timing Role: Secondary surge protector mounted directly at connector entry, downstream of gas discharge tube primary stage. Use Value: Provides sub-26 V clamping during 4 kV/2 kA surges, ensuring signal integrity for RS-485 transceivers operating at 3.3 V logic levels. |
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, 2.5× smaller package, 35.5 V clamping @ 17.1 A IPP | Only suitable for low-energy transients (e.g., ESD/EFT); cannot meet DO-160 lightning stroke requirements | Select only for cost-sensitive consumer electronics where 18 kW surge immunity is not required. |
| SMCJ16A | 1500 W PPP rating, same footprint as MPLAD18KP16AE3 but 12× lower energy handling | Lacks RTCA/DO-160F validation and AEC-Q101 qualification; limited to commercial-grade industrial use | Acceptable for non-safety-critical 12–24 V systems with moderate surge exposure (e.g., building automation). |
Compared with SMBJ16A and SMCJ16A, the MPLAD18KP16AE3 provides 30× and 12× higher peak pulse power respectively, enabling certified lightning protection in aerospace and automotive safety systems where single-event robustness and multi-stroke endurance are non-negotiable.
Availability
MPLAD18KP16AE3 is available at Aetrix Electronics and suitable for aircraft avionics, automotive powertrain modules, and industrial motor drive systems requiring stable component supply across extended product lifecycles.
Supply support for MPLAD18KP16AE3 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 analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD18KP16AE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical platforms where thermal robustness and multi-stroke reliability are foundational requirements.
FAQ
What is the clamping voltage specification for MPLAD18KP16AE3 under maximum surge current?
The MPLAD18KP16AE3 has a maximum clamping voltage (VC) of 26.0 V when subjected to its rated peak pulse current of 693 A at the 10/1000 μs waveform. This value is measured with the device mounted on an FR4 board using the recommended pad layout and represents the upper limit of voltage seen by downstream circuitry during a full-rated surge event. The clamping behavior is repeatable and validated per IEC 61000-4-5 test conditions.
Does MPLAD18KP16AE3 require special handling or baking before reflow soldering?
No, MPLAD18KP16AE3 does not require baking or dry-pack handling prior to reflow. It is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions and placed directly into standard lead-free reflow profiles (peak 260°C for 10 seconds). The void-free UL94V-0 epoxy body and annealed matte-tin terminations ensure process compatibility without popcorn risk.
Is MPLAD18KP16AE3 qualified for automotive under-hood applications?
Yes, MPLAD18KP16AE3 is AEC-Q101 qualified for automotive applications. It undergoes stress testing including temperature cycling, high-temperature reverse bias, and humidity bias life testing. Its 16 V VWM and 26.0 V clamping make it suitable for 12 V system load dump protection, and its -55°C to +150°C operating range covers under-hood thermal extremes. Full qualification data is documented in Microsemi's AEC-Q101 report for the PLAD family.
How does the metal-base cathode construction of MPLAD18KP16AE3 improve thermal performance?
The metal base serves as both the cathode terminal and primary thermal conduction path, achieving a junction-to-case thermal resistance of just 0.7 °C/W. When soldered to a large copper pour or heatsink, this design reduces steady-state junction temperature rise by over 70% compared to standard SMD TVS devices. This directly extends operational life under repetitive surge conditions and enables higher power density in space-constrained layouts.
Can MPLAD18KP16AE3 be used in bidirectional configurations?
No - MPLAD18KP16AE3 is a unidirectional device (denoted by "A" suffix, not "CA"). It conducts only during reverse-voltage transients and blocks forward current. For bidirectional protection, the equivalent part is MPLAD18KP16CA, which uses symmetrical avalanche structure and clamps for both polarities. Substituting MPLAD18KP16AE3 in a bidirectional circuit will result in forward conduction and potential failure during positive transients.
MPLAD18KP16AE3 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
MPLAD18KP16AE3 FAQ
1.How can I place an order for MPLAD18KP16AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP16AE3 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 MPLAD18KP16AE3 reliable?
The price and inventory of MPLAD18KP16AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP16AE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP16AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP16AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP16AE3?
MPLAD18KP16AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP16AE3 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 MPLAD18KP16AE3?
For technical support, including MPLAD18KP16AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP16AE3 requirements.
6.How does Aetrix verify that MPLAD18KP16AE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP16AE3 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 MPLAD18KP16AE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP16AE3?
All MPLAD18KP16AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP16AE3, 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 MPLAD18KP16AE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP16AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP16AE3 Tags
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