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Microchip Technology MPLAD18KP7.0CAE3
- Part No.:
- MPLAD18KP7.0CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP7.0CAE3.pdf
- Description:
- TVS DIODE 7VWM 12VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,094
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Product details
Overview
MPLAD18KP7.0CAE3 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 7.0 V reverse standoff voltage (VWM), clamps to ≤150 V at 1500 A peak impulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD18KP7.0CAE3 datasheet, MPLAD18KP7.0CAE3 pinout, MPLAD18KP7.0CAE3 application, or MPLAD18KP7.0CAE3 equivalent, key selection criteria include bidirectional polarity, IEC 61000-4-5 Class 1–5 secondary lightning protection with 42 Ω source impedance, RTCA/DO-160F Waveform 4 Level 4 compliance, and RoHS-compliant e3 termination plating.
Technical Context
This TVS diode operates as a clamping-type protector using avalanche breakdown to divert transients away from sensitive circuitry. Its bidirectional construction enables symmetrical clamping for AC-coupled or floating signal lines, and its low RθJC of 0.7 °C/W supports thermal management on FR4 PCBs with recommended pad layout.
It is qualified per AEC-Q101 and supports high-reliability screening per MIL-PRF-19500. The device provides ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and pin-injection protection per RTCA/DO-160F Waveforms 4 and 5A - with temperature-derated performance validated per MicroNote 132 and 134.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V maximum working standoff voltage - ensures compatibility with 5 V logic rails and 12 V automotive systems without leakage-induced false triggering |
| V(BR) min/max | 7.78–8.60 V breakdown range at I(BR) - guarantees reliable turn-on margin above VWM under temperature variation |
| VC @ IPP | 150 V max clamping voltage at 1500 A - limits downstream voltage stress during lightning surges to safe levels for 100 V-rated components |
| PPP | 18,000 W peak pulse power at 10/1000 μs - sustains multi-stroke DO-160 lightning events without degradation |
| ID @ VWM | 3000 μA max standby current - minimizes quiescent power loss in always-on avionics and control modules |
| RθJC | 0.7 °C/W junction-to-case thermal resistance - enables effective heat transfer to metal-core PCBs or heatsinks in high-power surge scenarios |
| Polarity | Bidirectional (CA suffix) - protects both polarities of differential buses, antenna feeds, or ungrounded sensor interfaces |
Pinout & Package
Package: Surface-mount PLAD (Plastic Leaded Anodeless Diode) with metal base cathode terminal. Void-free UL94V-0 epoxy body, tin-lead or RoHS-compliant matte-tin plating, ~1 g weight. Cathode is the metal base (bottom side); anode terminals are top-side leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (top lead) | AC input / signal line connection | Primary current entry point for positive half-cycle transients; electrically tied to Anode 2 in bidirectional operation |
| Anode 2 (top lead) | AC input / signal line connection | Primary current entry point for negative half-cycle transients; symmetric with Anode 1 for balanced clamping |
| Cathode (metal base) | Common reference / ground return | Low-inductance, high-current return path; must be soldered to large copper pour or thermal pad for optimal RθJC |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables single-device protection of AC-coupled lines (e.g., RS-485, CAN, Ethernet PHY) without polarity concerns or external biasing |
| 18 kW peak pulse rating @ 10/1000 μs | Meets RTCA DO-160 Section 22 multi-stroke lightning test requirements for commercial aircraft avionics bays |
| IEC 61000-4-5 Class 1–5 compliance (42 Ω source) | Validated for secondary lightning protection across all severity classes in industrial control cabinets and vehicle ECUs |
| RTCA/DO-160F Waveform 4 Level 4 support | Withstands 6.4/69 μs pin-injection transients up to 200 V on flight-critical sensors and navigation interfaces |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to reflow, reducing manufacturing cost and handling risk |
Applications
| Aerospace Avionics Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting ARINC 429 data receivers and GPS RF front-ends from induced lightning currents in aircraft fuselage. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed at connector interface to shunt transients before they reach analog front-end ICs. Use Value: Enables compliance with DO-160G Section 22 Category A/B/C multi-stroke testing while maintaining <150 V clamping at 1500 A. | Use Scenario: Safeguarding 12 V infotainment head units and ADAS camera modules during alternator load dump events (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary surge suppression device mounted at power entry point, absorbing >100 J energy in <100 ms. Use Value: Prevents latch-up or permanent damage in PMICs and microcontrollers by limiting bus voltage to ≤150 V during 120 V, 400 ms transients. |
| Industrial Ethernet Port Protection | Medical Imaging Signal Integrity |
Use Scenario: Shielding PoE-powered Ethernet switches and PHYs against EFT and lightning-induced surges on RJ45 ports. IC Role / Device Role / Timing Role: Common-mode TVS pair (two devices) across differential pairs to clamp common-mode transients without distorting signal integrity. Use Value: Maintains <1 ns response time and <5 pF capacitance per line, preserving 100 Mbps+ Ethernet timing margins. | Use Scenario: Protecting ultrasound transducer array analog front-ends and MRI gradient coil monitoring circuits from ESD and switching noise. IC Role / Device Role / Timing Role: Low-leakage (3000 μA max) bidirectional clamp on high-impedance sensor inputs to prevent baseline shift or saturation. Use Value: Ensures diagnostic accuracy by limiting transient-induced offset error to <1 mV over full temperature range (−55°C to +150°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | 600 W PPP rating, 100 A IPP, SMC package - 30× lower power handling than MPLAD18KP7.0CAE3 | Targeted at consumer-grade I/O protection; insufficient for DO-160 lightning or ISO 7637-2 load dump | Select only for cost-sensitive, low-energy environments where 18 kW capability is unnecessary |
| SMCJ7.0CA | 1500 W PPP rating, 120 A IPP, SMC package - 12× lower peak power than MPLAD18KP7.0CAE3 | Suitable for basic ESD/EFT but fails IEC 61000-4-5 Class 3+ and RTCA DO-160F Waveform 4 Level 4 | Use when board space is constrained and surge energy remains below 5 J; not for aerospace or heavy-duty automotive |
Compared with SMBJ7.0CA and SMCJ7.0CA, the MPLAD18KP7.0CAE3 delivers 30× and 12× higher peak pulse power respectively, enabling certified lightning protection in safety-critical systems where lower-rated alternatives would fail catastrophically under standardized surge waveforms.
Availability
MPLAD18KP7.0CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU design, and industrial Ethernet infrastructure requiring stable component supply, long-term lifecycle assurance, and traceable high-reliability sourcing.
Supply support for MPLAD18KP7.0CAE3 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 (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 MPLAD series was developed specifically for high-energy transient suppression in mission-critical platforms, emphasizing thermal robustness, multi-stroke survivability, and qualification to RTCA DO-160, AEC-Q101, and MIL-PRF-19500 standards.
FAQ
What is the clamping voltage of the MPLAD18KP7.0CAE3 at its rated peak pulse current?
The MPLAD18KP7.0CAE3 has a maximum clamping voltage (VC) of 150 V at 1500 A peak impulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed across the operating temperature range and forms the basis for downstream component voltage rating selection in protected circuits.
Does the MPLAD18KP7.0CAE3 meet RTCA DO-160 lightning protection requirements?
Yes, the MPLAD18KP7.0CAE3 is explicitly rated for RTCA DO-160 Section 22 multi-stroke lightning testing (Waveform 1, 2, 3, and 4). Per the datasheet, it achieves Level 4 compliance for Waveform 4 (6.4/69 μs) and supports full Category A/B/C testing when mounted per recommended pad layout on FR4.
Is the MPLAD18KP7.0CAE3 RoHS compliant, and what does the 'e3' suffix indicate?
Yes, the MPLAD18KP7.0CAE3 is RoHS compliant. The 'e3' suffix denotes annealed matte-tin plating per JEDEC J-STD-020B Level 1 moisture sensitivity - eliminating dry-pack requirements and supporting standard Pb-free reflow profiles without popcorn cracking or delamination risk.
How is thermal management handled for the MPLAD18KP7.0CAE3 during repeated surge events?
The MPLAD18KP7.0CAE3 achieves 0.7 °C/W junction-to-case thermal resistance via its metal-base cathode construction. For repeated surges, thermal derating per Figure 3 (RF01215 Rev B) applies: at 100°C case temperature, PPP drops to ~71 W steady-state, but 18,000 W remains valid for single 10/1000 μs pulses with ≤0.05% duty factor.
What is the polarity configuration of the MPLAD18KP7.0CAE3, and how does it affect circuit placement?
The MPLAD18KP7.0CAE3 is bidirectional (denoted by 'CA'), meaning it clamps symmetrically for both positive and negative transients. Its cathode is the metal base (bottom side), and both top leads serve as anodes. This allows placement across floating or AC-coupled lines - such as RS-485 buses or antenna feeds - without polarity orientation constraints.
MPLAD18KP7.0CAE3 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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 1500A (1.5kA)
- 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
MPLAD18KP7.0CAE3 FAQ
1.How can I place an order for MPLAD18KP7.0CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP7.0CAE3 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 MPLAD18KP7.0CAE3 reliable?
The price and inventory of MPLAD18KP7.0CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP7.0CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP7.0CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP7.0CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP7.0CAE3?
MPLAD18KP7.0CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP7.0CAE3 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 MPLAD18KP7.0CAE3?
For technical support, including MPLAD18KP7.0CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP7.0CAE3 requirements.
6.How does Aetrix verify that MPLAD18KP7.0CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP7.0CAE3 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 MPLAD18KP7.0CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP7.0CAE3?
All MPLAD18KP7.0CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP7.0CAE3, 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 MPLAD18KP7.0CAE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP7.0CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP7.0CAE3 Tags
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