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Microchip Technology MPLAD18KP7.5CAE3
- Part No.:
- MPLAD18KP7.5CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP7.5CAE3.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,154
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Product details
Overview
MPLAD18KP7.5CAE3 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 7.5 V reverse standoff voltage (VWM), clamps to ≤12.9 V at 1396 A peak current, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD18KP7.5CAE3 datasheet, MPLAD18KP7.5CAE3 pinout, MPLAD18KP7.5CAE3 application, or MPLAD18KP7.5CAE3 equivalent, key selection criteria include bidirectional polarity, low thermal resistance (RθJC = 0.7 °C/W), IEC 61000-4-5 Class 4 secondary lightning protection with 42 Ω source impedance, and RoHS-compliant e3 plating for lead-free assembly.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transient overvoltages across protected lines. Its metal-base package enables direct thermal coupling to PCB copper or heatsinks, supporting high-repetition-rate surges when mounted per recommended pad layout on FR4.
It is characterized for bidirectional operation with symmetrical clamping behavior, validated per RTCA/DO-160F Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 up to 7.5 V VWM, and conforms to AEC-Q101 stress testing for automotive reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous DC or peak AC operating voltage the device blocks without conduction |
| V(BR) min/max | 8.33–9.21 V - Breakdown occurs within this range at I(BR), defining turn-on threshold consistency |
| VC @ IPP | 12.9 V max at 1396 A - Clamping voltage under full-rated 10/1000 μs surge, limiting downstream voltage stress |
| PPP | 18,000 W @ 10/1000 μs - Peak power handling capacity determines survivability against lightning-induced transients |
| RθJC | 0.7 °C/W - Low junction-to-case thermal resistance enables efficient heat transfer to PCB or heatsink |
| ID @ VWM | 750 μA max - Low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| αV(BR) | 6.0 mV/°C - Temperature coefficient quantifies V(BR) drift with junction temperature, critical for thermal design margining |
Pinout & Package
The MPLAD18KP7.5CAE3 uses a surface-mount plastic package with metal base (cathode side) and two solderable terminals. Polarity is bidirectional; no anode/cathode distinction applies. Thermal performance relies on mounting the metal base directly to copper pour or heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode-side connection (bidirectional) | One of two symmetrical terminals; connects to protected line (e.g., data pair or power rail) |
| Terminal 2 | Cathode-side connection (bidirectional) | Second symmetrical terminal; connects to reference plane (GND or return path); metal base serves as thermal path, not electrical node |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetric surge suppression on AC-coupled or differential signal lines without polarity constraints |
| 18 kW peak pulse rating | Supports compliance with RTCA DO-160 Section 22 multi-stroke lightning tests in aircraft avionics |
| 0.7 °C/W RθJC | Allows sustained surge duty cycles when mounted on ≥1 in² 2-oz copper with thermal vias |
| e3 RoHS-compliant plating | Meets JEDEC J-STD-020B Level 1 moisture sensitivity, eliminating dry-pack requirement |
| AEC-Q101 qualified | Validated for automotive under-hood applications including load dump and ISO 7637-2 pulse testing |
Applications
| Aerospace Avionics Protection | Automotive Power Rail Protection |
|---|---|
Use Scenario: Protecting ARINC 429 data buses and sensor interfaces in commercial aircraft against lightning-induced transients per RTCA DO-160F Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pairs to clamp common-mode surges while preserving signal integrity. Use Value: 12.9 V clamping voltage limits bus voltage excursion below IC absolute maximum ratings during 1396 A waveforms. | Use Scenario: Safeguarding 12 V battery-fed ECUs during alternator load dump events per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary surge shunt connected between power rail and chassis ground to divert >1000 A transients away from downstream regulators and microcontrollers. Use Value: 18,000 W PPP rating ensures single-event survivability without degradation under repeated 10/1000 μs surges. |
| Industrial Ethernet Port Protection | Renewable Energy DC Link Protection |
Use Scenario: Shielding PoE-powered Ethernet PHYs and magnetics from induced surges in factory automation environments. IC Role / Device Role / Timing Role: Bidirectional TVS applied across each twisted pair (e.g., MDI/MDI-X) to suppress EFT and lightning-coupled noise per IEC 61000-4-4/5. Use Value: 7.5 V VWM matches typical 5 V or 3.3 V PHY supply rails, enabling low-clamp protection without false triggering. | Use Scenario: Protecting solar inverter DC link capacitors and IGBT gates from grid-switching transients and lightning surges. IC Role / Device Role / Timing Role: High-power TVS placed across DC+ and DC− bus to clamp fast-rising overvoltages before they reach power stage components. Use Value: Metal-base thermal path reduces junction temperature rise by >40% vs. standard SMD packages during repetitive 10/1000 μs events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA | 600 W PPP rating, 10× lower peak power; SMB package with RθJC ≈ 15 °C/W | Not suitable for DO-160 Section 22 or ISO 7637-2 Pulse 5a; limited to low-energy ESD/EFT | Select only for cost-sensitive consumer electronics where surge energy is <100 J |
| SMCJ7.5CA | 1500 W PPP rating, SMC package; RθJC ≈ 3.5 °C/W; no AEC-Q101 or DO-160 qualification | Lacks high-reliability screening and aviation-grade surge validation; requires derating above 85°C ambient | Acceptable for industrial controls with moderate surge exposure but not mission-critical aerospace use |
Compared with SMBJ7.5CA and SMCJ7.5CA, the MPLAD18KP7.5CAE3 provides 30× higher peak power, 5× lower thermal resistance, and certified compliance with RTCA DO-160F and AEC-Q101-making it the only option for high-reliability, high-energy transient suppression where system uptime and safety certification are mandatory.
Availability
MPLAD18KP7.5CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive power systems, and industrial renewable energy converters requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MPLAD18KP7.5CAE3 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 ICs for aerospace, defense, and industrial markets.
The MPLAD18KP7.5CAE3 belongs to Microsemi's PLAD family of high-power surface-mount TVS diodes, engineered specifically for multi-stroke lightning protection and automotive load dump immunity in safety-critical platforms.
FAQ
What is the clamping voltage of the MPLAD18KP7.5CAE3 under full-rated surge conditions?
The MPLAD18KP7.5CAE3 has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 1396 A at 10/1000 μs waveform. This value is measured per Figure 3 in RF01215 Rev B and ensures downstream components remain within safe operating voltage limits during high-energy transients.
Is the MPLAD18KP7.5CAE3 suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD18KP7.5CAE3 is explicitly tested and qualified to AEC-Q101 standards, as confirmed in the RF01215 datasheet. It supports automotive use cases including 12 V load dump protection and meets ISO 7637-2 Pulse 5a requirements due to its 18,000 W peak pulse power rating and robust thermal design.
Does the MPLAD18KP7.5CAE3 require dry-pack packaging or moisture sensitivity handling?
No, the MPLAD18KP7.5CAE3 carries IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1 rating, meaning it does not require dry-packaging or baking prior to reflow. Its e3 RoHS-compliant matte-tin plating and void-free epoxy body ensure reliable solderability without special handling.
How does the metal base of the MPLAD18KP7.5CAE3 improve thermal performance compared to standard SMD TVS diodes?
The metal base of the MPLAD18KP7.5CAE3 provides a direct thermal path from the silicon junction to the PCB copper or external heatsink, achieving a junction-to-case thermal resistance (RθJC) of just 0.7 °C/W-over 20× better than typical SMB/SMC packages. This enables effective heat dissipation during repetitive surge events.
Can the MPLAD18KP7.5CAE3 be used for bidirectional signal line protection such as RS-485 or CAN bus?
Yes, the MPLAD18KP7.5CAE3 is a bidirectional TVS diode with symmetrical clamping characteristics, making it appropriate for protecting balanced differential interfaces like RS-485 or CAN bus. Its 7.5 V VWM aligns with 5 V logic systems, and its 12.9 V VC ensures receiver inputs stay within safe voltage margins during transients.
MPLAD18KP7.5CAE3 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 1396A (1.396kA)
- 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
MPLAD18KP7.5CAE3 FAQ
1.How can I place an order for MPLAD18KP7.5CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP7.5CAE3 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 MPLAD18KP7.5CAE3 reliable?
The price and inventory of MPLAD18KP7.5CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP7.5CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP7.5CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP7.5CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP7.5CAE3?
MPLAD18KP7.5CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP7.5CAE3 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 MPLAD18KP7.5CAE3?
For technical support, including MPLAD18KP7.5CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP7.5CAE3 requirements.
6.How does Aetrix verify that MPLAD18KP7.5CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP7.5CAE3 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 MPLAD18KP7.5CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP7.5CAE3?
All MPLAD18KP7.5CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP7.5CAE3, 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 MPLAD18KP7.5CAE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP7.5CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP7.5CAE3 Tags
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