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Microchip Technology MPLAD18KP11CAE3
- Part No.:
- MPLAD18KP11CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP11CAE3.pdf
- Description:
- TVS DIODE 11VWM 18.2VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,270
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Product details
Overview
MPLAD18KP11CAE3 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, features a 11 V reverse standoff voltage (VWM), clamps to ≤18.2 V at 989 A peak impulse current (IPP), and exhibits <5 ns response time. It is qualified to AEC-Q101 and meets RTCA DO-160F Level 4 pin injection for Waveform 4.
For engineers reviewing the MPLAD18KP11CAE3 datasheet, MPLAD18KP11CAE3 pinout, MPLAD18KP11CAE3 application, or MPLAD18KP11CAE3 equivalent, key selection criteria include its bidirectional polarity, 18 kW surge rating, IEC 61000-4-5 Class 1–5 secondary lightning compliance (42 Ω source), RoHS-compliant e3 plating, and thermal resistance of 0.7 °C/W junction-to-case - all critical for high-reliability avionics and load-dump protection designs.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating when transient voltage exceeds its breakdown threshold (12.2–13.5 V). Its low RθJC (0.7 °C/W) enables efficient heat transfer to a heatsink or PCB copper plane, supporting repeated multi-stroke lightning events per RTCA DO-160 Section 22.
The bidirectional construction allows symmetric clamping for AC-coupled or floating signal lines. It complies with ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and pin-injection transients (RTCA DO-160F Waveforms 4 & 5A), with derating applied above 25 °C per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 18,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 11 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 12.2–13.5 V @ I(BR) - precise conduction onset ensures predictable protection margin |
| Clamping Voltage (VC) | ≤18.2 V @ 989 A IPP - limits downstream voltage stress during worst-case surge |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables effective thermal management on heatsink-mounted layouts |
| Response Time | <5 ns - fast activation prevents overshoot damage to sensitive ICs |
| Surge Compliance | IEC 61000-4-5 (42 Ω source, Class 1–5); RTCA DO-160F Waveform 4 Level 4 - certified for aviation secondary protection |
Pinout & Package
Package: Surface-mount PLAD (Plastic Leaded Anode Down) - void-free UL94V-0 epoxy body with metal base acting as cathode terminal; dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H); weight ≈1 g; RoHS-compliant matte-tin (e3) plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top-side metallization) | Current entry point in forward bias | Connected to line/pin requiring protection; forms one side of bidirectional clamping path |
| Cathode (metal base / underside) | Current exit point in forward bias; common reference | Must be soldered to large copper pour or heatsink for thermal and electrical performance; serves as ground or return path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals or floating buses without polarity constraints |
| AEC-Q101 qualification | Validated reliability for automotive under-hood and chassis applications |
| RTCA DO-160F Waveform 4 Level 4 compliance | Meets stringent aviation pin-injection immunity requirements at 6.4/69 μs |
| Low RθJC (0.7 °C/W) | Supports >1000 surge cycles with proper heatsinking per derating curve (Fig. 3) |
| 3σ lot norm screening on ID | Ensures consistent low leakage (<10 μA @ 11 V) across production lots |
Applications
| Aerospace Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC power distribution networks in commercial aircraft against lightning-induced transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS placed across main bus rails to clamp surges before they reach flight control modules or communication interfaces. Use Value: Withstands ≥1000A multi-stroke events and maintains clamping below 18.2 V, preserving integrity of MIL-STD-1553 and ARINC 429 receivers. |
Use Scenario: Safeguarding engine control units (ECUs) and infotainment systems during alternator load dump events (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary suppression device mounted at battery input, shunting up to 18 kW energy away from downstream DC-DC converters and microcontrollers. Use Value: Clamps within 5 ns to ≤18.2 V, preventing latch-up or burnout in 3.3 V/5 V logic while surviving 100+ load dump cycles. |
| Industrial Motor Drive I/O Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding encoder feedback lines and analog sensor inputs in variable-frequency drives exposed to switching transients from IGBTs. IC Role / Device Role / Timing Role: Bidirectional TVS installed differential-mode across RS-422/485 pairs or analog inputs to suppress coupled noise and EFT bursts. Use Value: Low clamping voltage and sub-5 ns response prevent data corruption and ADC saturation during 4 kV EFT (IEC 61000-4-4) events. |
Use Scenario: Securing 70–110 V DC signaling circuits in European railway signaling cabinets against induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Secondary protection device compliant with EN 50121-4, placed after primary gas discharge tube to limit let-through voltage to safe levels. Use Value: Meets IEC 61000-4-5 Class 4 (42 Ω source) with ≤18.2 V clamping, ensuring compatibility with SIL-2-rated safety controllers. |
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 | Lower PPP rating (600 W), SMC package, higher RθJA (40 °C/W), no DO-160 qualification | Suitable for consumer-grade or non-safety-critical industrial use only | Select only if surge energy is ≤100 mJ and aerospace/automotive certification is not required |
| SMCJ11CA | 1500 W PPP, same SMC package, AEC-Q101 qualified but lacks DO-160F Waveform 4 Level 4 validation | Acceptable for automotive ECUs where full DO-160 compliance is unnecessary | Choose when cost sensitivity outweighs need for aviation-level pin-injection immunity |
Compared with SMBJ11CA and SMCJ11CA, the MPLAD18KP11CAE3 provides 30× higher surge power handling, certified DO-160F immunity, and superior thermal performance - making it the sole option for certified avionics and high-reliability load-dump protection where single-event robustness and multi-stroke endurance are mandatory.
Availability
MPLAD18KP11CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain systems, and industrial motor drive designs requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MPLAD18KP11CAE3 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, radiation-tolerant, and precision timing solutions for aerospace, defense, and industrial markets.
The MPLAD18KP11CAE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection and certified avionics compliance - emphasizing thermal robustness, low clamping voltage, and full DO-160/IEC 61000-4-5 test validation.
FAQ
What is the clamping voltage of the MPLAD18KP11CAE3 at its rated peak pulse current?
The MPLAD18KP11CAE3 has a maximum clamping voltage (VC) of 18.2 V when subjected to its peak impulse current (IPP) of 989 A under 10/1000 μs waveform conditions. This value is guaranteed per the manufacturer's electrical characteristics table and ensures downstream circuitry remains below critical overvoltage thresholds during surge events.
Is the MPLAD18KP11CAE3 suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD18KP11CAE3 is explicitly tested and qualified to AEC-Q101 standards, as confirmed in the RF01215 datasheet. This makes it suitable for under-hood and chassis applications such as engine control units, battery management systems, and ADAS power supplies where reliability under temperature cycling and mechanical stress is mandatory.
Does the MPLAD18KP11CAE3 meet RTCA DO-160F lightning protection requirements?
Yes, the MPLAD18KP11CAE3 is certified for RTCA DO-160F Section 22 multi-stroke lightning testing and supports Pin Injection Waveform 4 Level 4 (6.4/69 μs) and Waveform 5A Level 4 (40/120 μs) at 25 °C. Its 18 kW rating and low clamping voltage directly address aircraft-level secondary protection needs.
What does the "CA" suffix indicate in MPLAD18KP11CAE3?
The "CA" suffix in MPLAD18KP11CAE3 denotes bidirectional polarity - meaning the device provides symmetrical clamping for both positive and negative transients. This is essential for protecting AC-coupled interfaces, differential buses, or floating grounds where polarity reversal cannot be assumed.
How should the metal base (cathode) of the MPLAD18KP11CAE3 be thermally managed on the PCB?
The metal base of the MPLAD18KP11CAE3 serves as the cathode terminal and primary thermal path. It must be soldered to a large, low-thermal-resistance copper pour or external heatsink. The datasheet specifies RθJC = 0.7 °C/W, so optimal thermal performance requires ≥250 mm² of 2-oz copper connected via ≥4 thermal vias to inner ground planes.
MPLAD18KP11CAE3 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
MPLAD18KP11CAE3 FAQ
1.How can I place an order for MPLAD18KP11CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP11CAE3 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 MPLAD18KP11CAE3 reliable?
The price and inventory of MPLAD18KP11CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP11CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP11CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP11CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP11CAE3?
MPLAD18KP11CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP11CAE3 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 MPLAD18KP11CAE3?
For technical support, including MPLAD18KP11CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP11CAE3 requirements.
6.How does Aetrix verify that MPLAD18KP11CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP11CAE3 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 MPLAD18KP11CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP11CAE3?
All MPLAD18KP11CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP11CAE3, 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 MPLAD18KP11CAE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP11CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP11CAE3 Tags
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