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Microchip Technology MPLAD18KP100CAE3
- Part No.:
- MPLAD18KP100CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP100CAE3.pdf
- Description:
- TVS DIODE 100VWM 162VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,107
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Product details
Overview
MPLAD18KP100CAE3 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, clamps at ≤162 V under 112 A peak impulse current, and features a 100 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (111–123 V). It is qualified to AEC-Q101 and meets RTCA DO-160F Level 4 pin injection for Waveform 4.
For engineers reviewing the MPLAD18KP100CAE3 datasheet, MPLAD18KP100CAE3 pinout, MPLAD18KP100CAE3 application, or MPLAD18KP100CAE3 equivalent, key selection criteria include its bidirectional polarity, 100 V VWM rating, 162 V max clamping voltage at IPP = 112 A, thermal resistance of 0.7 °C/W junction-to-case, and compliance with IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances) for secondary lightning protection.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device during transients, leveraging avalanche breakdown across both polarities due to its bidirectional construction. Its low RθJC (0.7 °C/W) enables effective heat transfer to a heatsink, supporting repetitive surge handling when mounted per recommended pad layout on FR4.
It is characterized for multi-stroke lightning immunity per RTCA DO-160 Section 22 and provides ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and conducted surge (IEC 61000-4-5) protection without external triggering circuitry. The device's metal-base cathode configuration requires thermal pad connection to ground plane for optimal thermal performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 18,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 100 V - maximum continuous operating voltage before conduction begins |
| Clamping Voltage (VC) | ≤162 V @ IPP = 112 A - limits downstream voltage stress during worst-case surge |
| Breakdown Voltage (VBR) | 111–123 V @ IBR - ensures reliable turn-on margin above VWM |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables efficient heat extraction to PCB copper or heatsink |
| Steady-State Power Dissipation | 71 W @ TC = 100°C - supports continuous thermal management in high-ambient environments |
| Surge Current Rating (IPP) | 112 A @ 10/1000 μs - quantifies single-event energy-handling capability |
Pinout & Package
Package: Surface-mount PLAD (Plastic Leaded Anodeless Diode) with metal base thermal pad; dimensions 12.32 × 10.54 × 5.33 mm (L × W × H); RoHS-compliant matte-tin plating; weight ≈1 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Side) | Transient current entry point (positive polarity) | Connects to protected line; forms one conduction path during positive transients |
| Cathode (Metal Base) | Common return / thermal interface | Must be soldered to large copper pour or heatsink for thermal and electrical return; serves as shared terminal for both polarities |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional surge suppression | Protects AC-coupled or floating lines without polarity constraints - eliminates need for dual unidirectional devices |
| RTCA DO-160F Waveform 4 Level 4 compliance | Withstands 6.4/69 μs pin-injection transients up to 100 V VWM - certified for avionics signal line protection |
| IEC 61000-4-5 secondary lightning protection | Validated at 42 Ω, 12 Ω, and 2 Ω source impedances - covers wide range of system-level coupling scenarios |
| AEC-Q101 qualification | Qualified for automotive underhood and powertrain applications - includes temperature cycling, HTRB, and surge testing |
| Moisture Sensitivity Level 1 | No dry-pack or baking required before reflow - simplifies SMT assembly and reduces manufacturing cost |
Applications
| Aerospace Avionics Signal Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting ARINC 429 data bus receivers from induced transients during lightning strike events. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient energy before it reaches receiver input stage. Use Value: Enables compliance with RTCA DO-160 Section 22 multi-stroke lightning test without derating or parallel devices. | Use Scenario: Safeguarding engine control unit (ECU) power inputs against 12 V battery load dump spikes (up to 120 V, 400 ms). IC Role / Device Role / Timing Role: Fast-response voltage clamp absorbing >100 J energy within milliseconds. Use Value: Prevents latch-up or permanent damage to 100 V-rated DC-DC converters and microcontrollers. |
| Industrial Motor Drive Gate Driver Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding isolated gate driver inputs from switching-induced dv/dt transients in 3-phase inverters. IC Role / Device Role / Timing Role: Low-capacitance TVS suppressing nanosecond-scale ringing while maintaining signal integrity. Use Value: Eliminates false triggering of IGBT/MOSFET gates without adding RC snubbers or layout compromises. | Use Scenario: Securing 24 V DC trackside signaling interfaces against induced surges from nearby traction currents. IC Role / Device Role / Timing Role: High-reliability bidirectional clamp meeting EN 50121-4 immunity requirements. Use Value: Achieves Class 3/4 surge immunity with single-device solution, reducing BOM count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA | 600 W PPP rating, 100 V VWM, SMB package, RθJC ≈ 25 °C/W | Lower energy handling; suitable only for sub-system level, not primary lightning protection | Select when surge duty cycle is low and board space is constrained - not for DO-160 or IEC 61000-4-5 Class 4+ systems |
| SMCJ100CA | 1500 W PPP rating, 100 V VWM, SMC package, RθJC ≈ 12 °C/W | Lacks RTCA DO-160F certification and AEC-Q101 qualification; limited thermal capacity | Acceptable for commercial industrial use where full aerospace/automotive qualification is not mandated |
Compared with SMBJ100CA and SMCJ100CA, the MPLAD18KP100CAE3 delivers 30× higher peak pulse power and 17× lower thermal resistance - enabling direct integration into primary protection stages of safety-critical platforms without thermal derating or parallel staging.
Availability
MPLAD18KP100CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain, and industrial motor drive applications requiring stable component supply, long-term lifecycle support, and certified surge robustness.
Supply support for MPLAD18KP100CAE3 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 components for aerospace, defense, and industrial markets.
The MPLAD18KP100CAE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning and load dump protection in mission-critical systems where failure is not an option.
FAQ
What is the clamping voltage of MPLAD18KP100CAE3 at its rated peak pulse current?
The MPLAD18KP100CAE3 has a maximum clamping voltage (VC) of 162 V when subjected to its rated peak pulse current (IPP) of 112 A under 10/1000 μs waveform conditions. This value is measured per standard test methods defined in IEC 61000-4-5 and ensures predictable voltage limiting during surge events. The MPLAD18KP100CAE3 maintains this clamping performance across its specified operating temperature range.
Is MPLAD18KP100CAE3 qualified for automotive applications?
Yes, the MPLAD18KP100CAE3 is AEC-Q101 qualified, confirming its suitability for automotive powertrain and underhood applications. It undergoes rigorous stress testing including high-temperature reverse bias, temperature cycling, and surge endurance. The MPLAD18KP100CAE3 is explicitly rated for load dump protection and meets ISO 7637-2 pulse 5a/b requirements when applied per recommended layout and thermal management guidelines.
Does MPLAD18KP100CAE3 require special PCB layout considerations?
Yes - the MPLAD18KP100CAE3 uses a metal-base thermal pad that must be soldered to a minimum 10 cm² copper area or external heatsink to achieve its specified RθJC of 0.7 °C/W. The pad layout must follow Microsemi's recommended footprint (Ref. RF01215), including thermal vias and isolation gaps. Failure to implement proper thermal design will reduce surge endurance and may cause premature thermal runaway during repetitive transients.
What standards does MPLAD18KP100CAE3 meet for lightning protection?
The MPLAD18KP100CAE3 meets RTCA DO-160 Section 22 for multi-stroke lightning and IEC 61000-4-5 for secondary lightning protection across multiple source impedances (42 Ω, 12 Ω, and 2 Ω). It is validated for Class 1–5 per 42 Ω and Class 1–4 per 12 Ω configurations. The MPLAD18KP100CAE3 also satisfies pin injection immunity per DO-160F Waveform 4 (Level 4) and Waveform 5A (Level 4 up to 36 V VWM variants).
Can MPLAD18KP100CAE3 be used in bidirectional AC signal lines?
Yes - the 'CA' suffix confirms bidirectional construction, making the MPLAD18KP100CAE3 ideal for protecting AC-coupled or floating differential pairs such as RS-485, CAN FD, or analog sensor inputs. Its symmetrical clamping behavior ensures equal protection for both positive and negative transients without polarity-sensitive routing. The MPLAD18KP100CAE3 maintains consistent VBR and VC characteristics across both directions, verified per JEDEC standards.
MPLAD18KP100CAE3 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):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 112A
- 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
MPLAD18KP100CAE3 FAQ
1.How can I place an order for MPLAD18KP100CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP100CAE3 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 MPLAD18KP100CAE3 reliable?
The price and inventory of MPLAD18KP100CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP100CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP100CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP100CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP100CAE3?
MPLAD18KP100CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP100CAE3 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 MPLAD18KP100CAE3?
For technical support, including MPLAD18KP100CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP100CAE3 requirements.
6.How does Aetrix verify that MPLAD18KP100CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP100CAE3 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 MPLAD18KP100CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP100CAE3?
All MPLAD18KP100CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP100CAE3, 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 MPLAD18KP100CAE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP100CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP100CAE3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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