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Microchip Technology MPLAD18KP7.0CA
- Part No.:
- MPLAD18KP7.0CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP7.0CA.pdf
- Description:
- TVS DIODE 7VWM 12VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,460
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Product details
Overview
MPLAD18KP7.0CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. 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 MPLAD18KP7.0CA datasheet, MPLAD18KP7.0CA pinout, MPLAD18KP7.0CA application, or MPLAD18KP7.0CA equivalent, key selection criteria include bidirectional clamping capability, IEC 61000-4-5 Class 4/5 secondary lightning compliance with 42 Ω source impedance, RTCA/DO-160F Waveform 4 Level 4 pin injection rating, and thermal resistance of 0.7 °C/W junction-to-case.
Technical Context
This TVS diode employs an avalanche breakdown structure optimized for low clamping ratio and fast response (<5 ns rise time). Its metal-base package enables direct thermal coupling to heatsinks, supporting sustained surge handling under ≤0.05% duty cycle per Figure 1 derating curve.
The device operates across –55 °C to +150 °C junction temperature range and maintains stable breakdown voltage (7.78–8.60 V @ I(BR)) with ±5.0 mV/°C temperature coefficient. Standby leakage remains ≤3000 μA at 7.0 V VWM, ensuring minimal system loading during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - supports aircraft-level lightning transients without thermal runaway |
| Reverse Standoff Voltage (VWM) | 7.0 V - matches nominal 5 V logic rail or 6–7 V automotive sensor supply |
| Clamping Voltage (VC) | 150 V @ 1500 A IPP - limits downstream IC stress during 10/1000 μs surges |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables >70 W steady-state dissipation when mounted on copper heatsink |
| Breakdown Voltage (V(BR)) | 7.78–8.60 V @ I(BR) - ensures reliable triggering above 7.0 V operating voltage |
| Temperature Coefficient (αV(BR)) | ±5.0 mV/°C - guarantees <±0.5 V drift over full –55 °C to +150 °C operating range |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack or bake required before reflow soldering |
Pinout & Package
Package: Surface-mount PLAD (Plastic Leaded Anodeless Diode) with metal baseplate for thermal conduction. Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H); weight ≈1 g. Cathode terminal is the entire metal baseplate (bottom side).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface Pads) | Transient Current Entry Point | Two symmetrical solder pads accept bidirectional surge current; no polarity marking required |
| Cathode (Metal Baseplate) | Thermal & Electrical Return Path | Direct thermal interface to PCB copper pour or heatsink; serves as common reference for clamping |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Clamping | Enables single-device protection of AC-coupled or floating signal/power lines without polarity concerns |
| RTCA DO-160F Waveform 4 Level 4 Compliance | Withstands 6.4/69 μs pin-injection transients up to 1500 A at 25 °C - validated for avionics backplane interfaces |
| IEC 61000-4-5 Secondary Lightning Protection | Class 4/5 rated with 42 Ω source impedance - meets DO-160 Section 22 multi-stroke test requirements |
| Low Junction-to-Case Thermal Resistance | 0.7 °C/W allows >10× higher surge repetition rate than standard SMC packages under identical PCB layout |
| AEC-Q101 Qualified | Qualified for automotive underhood applications including engine control modules and battery management systems |
Applications
| Aerospace Avionics Power Bus | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting ARINC 429 data bus power supplies and flight control actuator drivers against induced lightning currents. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed at board-level input filter stage. Use Value: Survives ≥100 multi-stroke DO-160 Section 22 transients while maintaining <150 V clamping to preserve AS5052-compliant interface ICs. |
Use Scenario: Safeguarding 12 V vehicle infotainment ECUs during alternator load dump events (ISO 7637-2 Pulse 5a/b). IC Role / Device Role / Timing Role: Primary surge suppression device mounted directly at connector entry point. Use Value: Limits transient voltage to <150 V within 5 ns, preventing latch-up in USB-C PD controllers and CAN transceivers. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Shielding IGBT gate drivers and current sensors on 400 V DC link buses from switching-induced voltage spikes. IC Role / Device Role / Timing Role: High-power transient clamp parallel to bulk capacitor bank. Use Value: Absorbs 18 kW surges without degradation, enabling 200,000-cycle lifetime in variable-frequency drive enclosures. |
Use Scenario: Protecting EIA-485 RS-485 transceivers in track-side signaling cabinets exposed to nearby lightning strikes. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT) front-end. Use Value: Provides <5 ns response and <150 V clamping to meet EN 50121-4 immunity requirements for railway EMC. |
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, 1.5× higher clamping voltage (100 V @ 43.3 A), SMC package | Limited to consumer-grade surge standards (IEC 61000-4-5 Class 2), not DO-160 qualified | Select only for cost-sensitive non-aerospace designs where 18 kW surge capacity is unnecessary |
| SMCJ7.0CA | 1500 W PPP rating, same VWM/clamp but 12× lower energy handling, SMC package | Meets AEC-Q101 but lacks RTCA DO-160F Waveform 4 validation and 42 Ω IEC 61000-4-5 Class 4/5 rating | Acceptable for automotive cabin modules but insufficient for engine bay or avionics use cases requiring multi-stroke endurance |
Compared with SMBJ7.0CA and SMCJ7.0CA, the MPLAD18KP7.0CA provides 30× higher peak pulse power, certified DO-160F Waveform 4 Level 4 performance, and metal-base thermal design-making it uniquely suitable for aerospace and heavy-duty industrial surge environments where single-event energy exceeds 100 J.
Availability
MPLAD18KP7.0CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive under-hood electronics, and industrial motor drive systems requiring stable component supply with long-term lifecycle assurance and traceable sourcing.
Supply support for MPLAD18KP7.0CA 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 radiation-hardened components for mission-critical systems.
The MPLAD18KP7.0CA belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection in aerospace, defense, and transportation systems where failure is not an option.
FAQ
What is the maximum peak pulse current rating for MPLAD18KP7.0CA?
The MPLAD18KP7.0CA is rated for 1500 A peak impulse current (IPP) at the standard 10/1000 μs waveform. This value is confirmed in Table 4 of RF01215 Rev B, where IPP = 1500 A is listed for both unidirectional and bidirectional variants at VWM = 7.0 V. The device maintains this rating across its full operating temperature range when mounted per recommended pad layout.
Does MPLAD18KP7.0CA meet RTCA DO-160F Section 22 lightning requirements?
Yes, the MPLAD18KP7.0CA is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. Per page 1 of RF01215 Rev B, it is "particularly effective at meeting the multi-stroke lightning standard RTCA DO-160, section 22 for aircraft design." Its 18,000 W PPP rating and bidirectional construction enable repeated surge absorption without parameter shift.
What is the thermal resistance from junction to ambient for MPLAD18KP7.0CA?
The junction-to-ambient thermal resistance (RθJA) for MPLAD18KP7.0CA is 50 °C/W when mounted on FR4 PCB with the recommended pad layout (per Note 1 in Table 2). However, its junction-to-case (RθJC) is only 0.7 °C/W - meaning actual thermal performance depends critically on heatsinking the metal baseplate to a copper plane or external heatsink.
Is MPLAD18KP7.0CA RoHS compliant?
Yes, MPLAD18KP7.0CA is RoHS compliant. The "e3" suffix in the full nomenclature (MPLAD18KP7.0CA e3) indicates RoHS-compliant annealed matte-tin plating per the part numbering convention defined on page 2 of RF01215 Rev B. The device uses void-free UL94V-0 epoxy and meets IPC/JEDEC J-STD-020B moisture sensitivity Level 1.
How does the clamping voltage of MPLAD18KP7.0CA compare to its breakdown voltage?
The MPLAD18KP7.0CA has a breakdown voltage V(BR) range of 7.78–8.60 V at specified test current, while its maximum clamping voltage VC is 150 V at 1500 A IPP. This yields a clamping ratio of ~17.4×, which is typical for high-power TVS diodes optimized for energy absorption rather than low-voltage precision clamping. The 150 V VC ensures protected circuits remain below absolute maximum ratings during worst-case transients.
MPLAD18KP7.0CA 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
MPLAD18KP7.0CA FAQ
1.How can I place an order for MPLAD18KP7.0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP7.0CA 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 MPLAD18KP7.0CA reliable?
The price and inventory of MPLAD18KP7.0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP7.0CA is usually 5 days.
3.What payment methods are accepted for MPLAD18KP7.0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP7.0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP7.0CA?
MPLAD18KP7.0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP7.0CA 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 MPLAD18KP7.0CA?
For technical support, including MPLAD18KP7.0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP7.0CA requirements.
6.How does Aetrix verify that MPLAD18KP7.0CA is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP7.0CA 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 MPLAD18KP7.0CA meets industry standards.
7.What is the process for return or replacement of MPLAD18KP7.0CA?
All MPLAD18KP7.0CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP7.0CA, 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 MPLAD18KP7.0CA part is unused and in its original packaging.
Return procedure for MPLAD18KP7.0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP7.0CA Tags
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