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Microchip Technology MPLAD18KP8.0CAE3
- Part No.:
- MPLAD18KP8.0CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP8.0CAE3.pdf
- Description:
- TVS DIODE 8VWM 13.6VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,457
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Product details
Overview
MPLAD18KP8.0CAE3 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 8.0 V reverse standoff voltage (VWM), clamps to ≤13.6 V at 1324 A peak impulse current (IPP), and meets RTCA DO-160F Level 4 pin injection and IEC 61000-4-5 Class 1–5 secondary lightning protection.
For engineers reviewing the MPLAD18KP8.0CAE3 datasheet, MPLAD18KP8.0CAE3 pinout, MPLAD18KP8.0CAE3 application, or MPLAD18KP8.0CAE3 equivalent, key selection criteria include its bidirectional polarity, 0.7 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, 12.32–12.57 mm package length, and compliance with AEC-Q101 reliability testing.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, responding to transients within <5 ns. Its silicon avalanche structure enables precise breakdown at 8.89–9.83 V (VBR) under 5 mA test current, with temperature coefficient αVBR = 6.0 mV/°C.
It supports multi-stroke lightning immunity per RTCA DO-160 Section 22 and withstands repetitive surges at ≤0.05% duty factor. Thermal management relies on low RθJC (0.7 °C/W) and recommended FR4 pad layout for optimal heat dissipation to PCB ground plane.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 18,000 W - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 8.0 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (VBR) | 8.89–9.83 V @ 5 mA - defines precise avalanche onset threshold |
| Clamping Voltage (VC) | ≤13.6 V @ 1324 A - limits downstream voltage stress during worst-case surge |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables efficient heat transfer to heatsink or copper pour |
| Standby Current (ID) | ≤450 μA @ 8.0 V - ensures negligible leakage in standby operation |
| Temperature Coefficient (αVBR) | 6.0 mV/°C - quantifies VBR drift over operating temperature range |
Pinout & Package
Package: Surface-mount PLAD (Plastic Low-profile Anode/Cathode) with metal base cathode terminal. Dimensions: 12.32–12.57 mm (L) × 10.54–10.80 mm (W) × 3.68–3.94 mm (H); weight ≈1 g; RoHS-compliant matte-tin (e3) plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Side) | Transient current entry point (bidirectional) | Connects to line being protected; symmetric conduction path for ± surges |
| Cathode (Metal Base) | Transient current return path | Must be soldered to large copper area for thermal and electrical performance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC or differential lines without polarity constraints |
| RTCA DO-160F Waveform 4 compliance (Level 4) | Withstands 6.4/69 μs pin-injection transients up to 8.0 V VWM devices |
| AEC-Q101 qualified | Validated for automotive under-hood and chassis applications |
| Moisture Sensitivity Level 1 | No dry-pack or bake-out required prior to reflow soldering |
| 3σ lot norm screening on ID | Ensures consistent low-leakage performance across production lots |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power inputs in flight control computers subjected to DO-160 Section 22 lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping element placed directly at connector entry point to shunt >10 kA transients. Use Value: Enables compliance with Level 4 pin injection (6.4/69 μs) and Class 5 lightning (IEC 61000-4-5, 42 Ω source) without derating. | Use Scenario: Safeguarding 12 V supply rails in engine management systems exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary surge protector downstream of main fuse, clamping within <5 ns to prevent MCU reset or sensor damage. Use Value: Delivers 1324 A IPP capacity at 8.0 V VWM, matching typical automotive battery nominal voltage with margin. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Protecting 24–48 V DC bus nodes in variable-frequency drives against switching transients and induced RFI. IC Role / Device Role / Timing Role: Bidirectional TVS placed across bus rails to clamp both positive and negative polarity spikes from IGBT commutation. Use Value: 18,000 W PPP rating handles repetitive 10/1000 μs surges at ≤0.05% duty cycle without thermal runaway. | Use Scenario: Shielding 72 V signaling lines in train control systems from EFT bursts (IEC 61000-4-4) and secondary lightning (IEC 61000-4-5). IC Role / Device Role / Timing Role: High-reliability transient suppressor mounted on front-panel connectors to absorb conducted energy before reaching isolation barriers. Use Value: Meets MIL-PRF-19500 upscreening options and provides traceable wafer/assembly lot data for safety-critical rail deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CA | 600 W PPP rating, 5.0 mm × 4.5 mm SMB package, RθJC = 25 °C/W | Lower energy handling; suitable only for consumer-grade or non-safety-critical I/O protection | Select when cost and board space constrain requirements and surge energy remains below 100 J |
| SMCJ8.0CA | 1500 W PPP rating, 7.2 mm × 6.2 mm SMC package, RθJC = 12 °C/W | Lacks RTCA DO-160F qualification and AEC-Q101 validation | Choose for industrial controls where full aerospace/automotive certification is not mandated |
Compared with SMBJ8.0CA and SMCJ8.0CA, the MPLAD18KP8.0CAE3 provides 30× higher peak pulse power, certified multi-stroke lightning resilience, and traceable high-reliability manufacturing-making it the only option for DO-160F Level 4 and AEC-Q101-compliant designs requiring 18 kW surge capability.
Availability
MPLAD18KP8.0CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and certified surge immunity.
Supply support for MPLAD18KP8.0CAE3 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 radiation-hardened solutions for aerospace, defense, and industrial markets.
The MPLAD18KP8.0CAE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection and mission-critical surge immunity in harsh-environment electronics.
FAQ
What is the clamping voltage of MPLAD18KP8.0CAE3 at its rated peak pulse current?
The MPLAD18KP8.0CAE3 has a maximum clamping voltage (VC) of 13.6 V at 1324 A peak impulse current (IPP) under 10/1000 μs waveform conditions. This value ensures downstream components see limited overvoltage during worst-case transients, directly supporting design margin calculations for 12 V and 28 V systems. The MPLAD18KP8.0CAE3 achieves this with sub-5 ns response time and low dynamic impedance.
Is MPLAD18KP8.0CAE3 qualified for automotive applications?
Yes, MPLAD18KP8.0CAE3 is tested and qualified to AEC-Q101 standards for discrete semiconductors. It undergoes stress testing including HTGB, HTRB, and temperature cycling to validate reliability in automotive under-hood environments. The MPLAD18KP8.0CAE3 also supports optional MIL-PRF-19500 upscreening for extended screening levels (MA, MX, MXL) required in safety-critical vehicle subsystems.
Does MPLAD18KP8.0CAE3 require moisture-sensitive handling?
No, MPLAD18KP8.0CAE3 is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored indefinitely at ambient conditions without dry packing or baking prior to reflow soldering. This eliminates moisture-related popcorning risk and simplifies manufacturing logistics for high-volume production of the MPLAD18KP8.0CAE3.
How does the thermal performance of MPLAD18KP8.0CAE3 compare to standard SMB/SMC TVS diodes?
The MPLAD18KP8.0CAE3 offers a junction-to-case thermal resistance (RθJC) of just 0.7 °C/W-over 17× lower than typical SMC packages (~12 °C/W) and ~35× lower than SMB packages (~25 °C/W). This enables effective heat transfer to PCB copper or external heatsinks, allowing the MPLAD18KP8.0CAE3 to sustain repeated 18 kW surges without thermal degradation when mounted per recommended pad layout.
Can MPLAD18KP8.0CAE3 be used for bidirectional signal line protection?
Yes, the "CA" suffix confirms MPLAD18KP8.0CAE3 is a bidirectional TVS diode, making it suitable for protecting AC-coupled or differential interfaces such as RS-485, CAN FD, or Ethernet PHY lines. Its symmetrical clamping behavior ensures equal protection against positive and negative transients, and its <5 ns response time preserves signal integrity in high-speed communication links using the MPLAD18KP8.0CAE3.
MPLAD18KP8.0CAE3 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 1324A (1.324kA)
- 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
MPLAD18KP8.0CAE3 FAQ
1.How can I place an order for MPLAD18KP8.0CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP8.0CAE3 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 MPLAD18KP8.0CAE3 reliable?
The price and inventory of MPLAD18KP8.0CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP8.0CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP8.0CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP8.0CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP8.0CAE3?
MPLAD18KP8.0CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP8.0CAE3 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 MPLAD18KP8.0CAE3?
For technical support, including MPLAD18KP8.0CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP8.0CAE3 requirements.
6.How does Aetrix verify that MPLAD18KP8.0CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP8.0CAE3 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 MPLAD18KP8.0CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP8.0CAE3?
All MPLAD18KP8.0CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP8.0CAE3, 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 MPLAD18KP8.0CAE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP8.0CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP8.0CAE3 Tags
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