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Microchip Technology MPLAD18KP9.0CAE3
- Part No.:
- MPLAD18KP9.0CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP9.0CAE3.pdf
- Description:
- TVS DIODE 9VWM 15.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,447
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Product details
Overview
MPLAD18KP9.0CAE3 from Microsemi is a bidirectional 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 to ≤15.4 V at 1169 A, and features a 9.0 V reverse standoff voltage (VWM) with ±8.0 mV/°C temperature coefficient of breakdown voltage. It is qualified to AEC-Q101 and meets RTCA DO-160F Level 4 pin injection for Waveform 4.
For engineers reviewing the MPLAD18KP9.0CAE3 datasheet, MPLAD18KP9.0CAE3 pinout, MPLAD18KP9.0CAE3 application, or MPLAD18KP9.0CAE3 equivalent, key selection criteria include bidirectional clamping capability, 18 kW surge rating, IEC 61000-4-5 Class 1–5 secondary lightning compliance, thermal resistance of 0.7 °C/W junction-to-case, and RoHS-compliant e3 plating - all critical for high-reliability avionics and vehicle electronics design.
Technical Context
This TVS diode operates as a bidirectional clamping device with symmetrical avalanche breakdown behavior across both polarities, enabling robust protection against voltage reversals in ungrounded or floating bus architectures. Its low RθJC (0.7 °C/W) and void-free thermosetting epoxy package support high-duty-cycle surge handling when mounted on FR4 with recommended pad layout.
The device is characterized by tight V(BR) tolerance (10.0–11.1 V @ I(BR)), fast response time (<5 ns), and guaranteed clamping performance up to 1169 A peak impulse current (IPP) at 10/1000 μs. It meets MIL-PRF-19500 screening options (MX/MXL levels) and supports moisture sensitivity Level 1 per J-STD-020B without dry pack requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - sustains multi-stroke lightning surges per RTCA DO-160 Section 22 without degradation |
| Reverse Standoff Voltage (VWM) | 9.0 V - maximum continuous operating voltage before clamping initiates; matches 9 V nominal supply rails |
| Clamping Voltage (VC) | ≤15.4 V @ IPP = 1169 A - limits downstream IC stress during 10/1000 μs transients |
| Breakdown Voltage (V(BR)) | 10.0–11.1 V @ I(BR) - ensures reliable turn-on margin above VWM with controlled leakage |
| Thermal Resistance (RθJC) | 0.7 °C/W - enables efficient heat transfer to PCB copper pour or heatsink for repeated surge events |
| Temperature Coefficient (αV(BR)) | ±8.0 mV/°C - stable clamping threshold across -55°C to +150°C operating range |
| Moisture Sensitivity Level | Level 1 (J-STD-020B) - no baking or dry pack required prior to reflow soldering |
Pinout & Package
Package: Surface-mount PLAD (Power Leadless Array Device) with metal base cathode termination. Dimensions: 12.32 × 10.54 × 3.68 mm (L × W × H), weight ≈1 g. Void-free UL94V-0 epoxy body; matte-tin (e3) RoHS-compliant plating; polarity marked - cathode is metal base (bottom side).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Side) | Positive terminal for one polarity path | Connected to protected line; forms symmetrical clamping path with cathode during positive or negative transients |
| Cathode (Metal Base) | Common reference terminal / heat sink interface | Provides lowest thermal resistance path to PCB copper; must be soldered to large thermal pad for rated PPP performance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC-coupled or floating differential buses without polarity constraints |
| 18 kW peak pulse power rating | Meets RTCA DO-160F Section 22 multi-stroke lightning requirements for commercial aircraft systems |
| AEC-Q101 qualification | Validated reliability for under-hood automotive applications including load dump and alternator transients |
| 0.7 °C/W junction-to-case thermal resistance | Supports >1000 surge cycles at 0.05% duty factor when mounted per recommended pad layout on FR4 |
| e3 RoHS-compliant matte-tin plating | Ensures solderability per MIL-STD-750 Method 2026 and compatibility with lead-free reflow profiles |
Applications
| Aerospace Avionics Power Bus | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of ARINC 429 data lines and 28 V DC power inputs against lightning-induced surges per DO-160F Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at connector entry point to shunt energy before reaching level-shifting transceivers and microcontrollers. Use Value: Limits transient overvoltage to ≤15.4 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V logic interfaces powered from regulated 28 V supplies. | Use Scenario: Secondary surge suppression on 12 V battery-fed ECU power rails exposed to ISO 7637-2 load dump and ISO 16750-2 jump-start transients. IC Role / Device Role / Timing Role: High-power clamping device placed after primary fuse and upstream of DC-DC converters and CAN transceivers. Use Value: Absorbs up to 18,000 W pulses without failure, maintaining system uptime during 12 V system recovery after engine cranking or alternator regulation faults. |
| Industrial Motor Drive Control Board | Railway Signaling Interface |
Use Scenario: Protection of isolated encoder feedback lines and gate driver power inputs in variable-frequency drives subjected to IEC 61000-4-5 surge testing. IC Role / Device Role / Timing Role: Bidirectional TVS mounted directly at board edge connectors to suppress common-mode transients coupled from motor cables. Use Value: Clamps 42 Ω source impedance surges to <15.4 V within <5 ns, preventing false triggering of optocoupled isolation barriers and encoder decoding errors. | Use Scenario: Surge protection for 75 Ω coaxial trackside signaling lines compliant with EN 50121-4 for electromagnetic compatibility in rail infrastructure. IC Role / Device Role / Timing Role: Low-capacitance TVS used in parallel with GDT-based primary protection to handle fast-rising induced surges from nearby lightning strikes. Use Value: Provides sub-5 ns response and 1169 A IPP capacity to meet Class 3/4 IEC 61000-4-5 requirements while minimizing signal distortion on 1 MHz Manchester-encoded data links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | 600 W PPP rating, SMB package, RθJC ≈ 25 °C/W | Limited to single-stroke or low-duty-cycle surges; unsuitable for DO-160F multi-stroke validation | Select only for cost-sensitive consumer-grade designs where 18 kW rating is unnecessary |
| SMCJ9.0CA | 1500 W PPP rating, SMC package, RθJC ≈ 12 °C/W | Cannot sustain repeated 10/1000 μs surges above 100 A without derating; lacks AEC-Q101 qualification | Acceptable for non-automotive industrial controls but not for certified avionics or automotive safety systems |
Compared with SMBJ9.0CA and SMCJ9.0CA, the MPLAD18KP9.0CAE3 provides 30× higher peak pulse power, 17× lower thermal resistance, and full qualification for mission-critical aerospace and automotive surge standards - making it the only option for designs requiring validated multi-stroke lightning resilience.
Availability
MPLAD18KP9.0CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power management, and industrial motor drive control requiring stable component supply across extended production lifecycles.
Supply support for MPLAD18KP9.0CAE3 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, mixed-signal, and power management solutions for aerospace, defense, and industrial markets.
The MPLAD series was developed specifically for high-energy transient suppression in safety-critical platforms where multi-stroke lightning immunity, thermal stability, and long-term parametric consistency are mandatory - not just for general-purpose surge protection.
FAQ
What is the clamping voltage of MPLAD18KP9.0CAE3 at its rated peak pulse current?
The MPLAD18KP9.0CAE3 has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 1169 A under 10/1000 μs waveform conditions. This value is guaranteed per the manufacturer's electrical characteristics table and ensures downstream circuitry remains below safe overvoltage thresholds during surge events. The MPLAD18KP9.0CAE3 achieves this with symmetrical bidirectional conduction and low dynamic impedance.
Is MPLAD18KP9.0CAE3 qualified for automotive applications?
Yes, the MPLAD18KP9.0CAE3 is AEC-Q101 qualified, confirming its suitability for automotive under-hood and powertrain applications. It withstands load dump transients, jump-start surges, and conducted RF interference per ISO 7637-2 and ISO 16750-2. Its thermal design and RoHS-compliant e3 plating further support reflow compatibility and long-term reliability in automotive ECUs - a key distinction of the MPLAD18KP9.0CAE3 versus standard TVS diodes.
How does the PLAD package of MPLAD18KP9.0CAE3 improve thermal performance?
The PLAD package of the MPLAD18KP9.0CAE3 uses a metal base as the cathode terminal, providing direct thermal conduction from the silicon die to the PCB copper pour. With a measured RθJC of 0.7 °C/W, it dissipates heat far more efficiently than leaded or plastic-body TVS devices. This allows the MPLAD18KP9.0CAE3 to sustain repeated 18 kW surges without thermal runaway - a capability confirmed in Microsemi's derating curves and essential for DO-160F compliance.
Can MPLAD18KP9.0CAE3 be used for RTCA DO-160F Level 5 pin injection protection?
No, the MPLAD18KP9.0CAE3 is rated for RTCA DO-160F Level 4 pin injection protection on Waveform 4 (6.4/69 μs), as specified in the datasheet. For Level 5 compliance on Waveform 4, Microsemi lists only MPLAD18KP7.0A to MPLAD18KP130CA variants. The MPLAD18KP9.0CAE3 falls outside that upper limit due to its higher V(BR) range (10.0–11.1 V), which affects transient response timing margins required for Level 5.
What is the meaning of the 'CA' and 'E3' suffixes in MPLAD18KP9.0CAE3?
In MPLAD18KP9.0CAE3, 'CA' denotes bidirectional construction (symmetrical clamping), while 'E3' specifies RoHS-compliant matte-tin plating per JEDEC J-STD-020B Level 1 moisture sensitivity. These suffixes are defined in Microsemi's nomenclature guide and confirm the device's polarity configuration and environmental compliance - both critical for correct placement and process validation in the MPLAD18KP9.0CAE3's target applications.
MPLAD18KP9.0CAE3 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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 1169A (1.169kA)
- 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
MPLAD18KP9.0CAE3 FAQ
1.How can I place an order for MPLAD18KP9.0CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP9.0CAE3 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 MPLAD18KP9.0CAE3 reliable?
The price and inventory of MPLAD18KP9.0CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP9.0CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP9.0CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP9.0CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP9.0CAE3?
MPLAD18KP9.0CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP9.0CAE3 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 MPLAD18KP9.0CAE3?
For technical support, including MPLAD18KP9.0CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP9.0CAE3 requirements.
6.How does Aetrix verify that MPLAD18KP9.0CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP9.0CAE3 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 MPLAD18KP9.0CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP9.0CAE3?
All MPLAD18KP9.0CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP9.0CAE3, 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 MPLAD18KP9.0CAE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP9.0CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP9.0CAE3 Tags
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