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Microchip Technology MPLAD18KP10AE3
- Part No.:
- MPLAD18KP10AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP10AE3.pdf
- Description:
- TVS DIODE 10VWM 17VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,941
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Product details
Overview
MPLAD18KP10AE3 from Microsemi is a unidirectional 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, clamps to ≤17.0 V at 1059 A, and features a 10 V reverse standoff voltage (VWM), 11.1–12.3 V breakdown voltage (V(BR)), and 0.7 °C/W junction-to-case thermal resistance - enabling robust secondary lightning protection per IEC 61000-4-5 and RTCA DO-160F Waveform 4 Level 4.
For engineers reviewing the MPLAD18KP10AE3 datasheet, MPLAD18KP10AE3 pinout, MPLAD18KP10AE3 application, or MPLAD18KP10AE3 equivalent, this device is selected for high-reliability DC bus protection where multi-stroke surge endurance, low clamping voltage under extreme current, and RoHS-compliant surface-mount packaging are critical design requirements.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector with avalanche breakdown behavior. Its metal-base cathode construction enables direct thermal coupling to PCB copper or heatsinks, supporting sustained energy dissipation under repetitive transients at ≤0.05% duty factor. The device meets AEC-Q101 stress testing and is rated for -55°C to +150°C junction temperature operation.
It is validated for secondary lightning protection per IEC 61000-4-5 with 42 Ω, 12 Ω, and 2 Ω source impedances (Classes 1–5 depending on configuration), and for pin injection immunity per RTCA/DO-160F Waveform 4 (6.4/69 μs) up to Level 4 - requiring no external heat sinking when mounted per recommended FR4 pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 18,000 W - sustains full-rated lightning surge without failure under defined waveform and mounting |
| Reverse Standoff Voltage (VWM) | 10 V - maximum continuous DC or peak AC voltage the device blocks without conduction |
| Clamping Voltage (VC @ IPP) | 17.0 V max at 1059 A - limits downstream circuit voltage during worst-case surge event |
| Breakdown Voltage (V(BR)) | 11.1–12.3 V @ I(BR) - precise avalanche onset ensures predictable turn-on margin above VWM |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables efficient heat transfer to PCB copper or heatsink, critical for multi-pulse reliability |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - zero dry-pack requirement simplifies SMT handling and storage |
| RoHS Compliance | e3 marking - lead-free matte-tin plating compatible with standard Pb-free reflow profiles |
Pinout & Package
Package: Surface-mount PLAD (Plastic Low-Profile Anode-Diode) with metal base cathode terminal. Void-free UL94V-0 epoxy body; tin-lead or RoHS-compliant matte-tin plating; polarity marked by cathode on metal bottom surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top-side metallization) | Transient current entry point for unidirectional operation | Connected to protected line; current flows anode→cathode during positive surge |
| Cathode (metal base) | Transient current return path and primary thermal interface | Must be soldered to large copper pour or heatsink; serves as both electrical return and thermal conduction plane |
Key Features
| Feature | Design Value |
|---|---|
| 18 kW surge rating with 10/1000 μs waveform | Validated for multi-stroke lightning events per RTCA DO-160 Section 22, eliminating need for parallel TVS arrays |
| 0.7 °C/W RθJC | Enables >90% of surge energy to dissipate into PCB copper, reducing localized hot-spot risk |
| Level 1 moisture sensitivity | Eliminates baking preconditioning and dry-pack logistics, lowering manufacturing cost and cycle time |
| AEC-Q101 qualified | Confirms reliability for automotive powertrain and chassis applications subject to extended temperature cycling and vibration |
| RTCA DO-160F Waveform 4 Level 4 compliance | Guarantees survivability against 6.4/69 μs pin-injection transients at 25°C without derating |
Applications
| Aerospace Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC distribution buses in commercial aircraft against induced lightning surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed at bus entry point to limit transient overvoltage to <17 V. Use Value: Enables single-device compliance with Level 4 pin injection and Class 4 secondary lightning (42 Ω source) without auxiliary cooling. | Use Scenario: Safeguarding engine control unit (ECU) inputs during alternator load dump events in 12 V automotive systems. IC Role / Device Role / Timing Role: Primary clamping element across battery rail, activated within <100 ps to clamp 120 V spikes to ≤17 V. Use Value: Prevents damage to downstream 3.3 V/5 V logic while meeting ISO 7637-2 Pulse 5a requirements with no derating needed at 105°C ambient. |
| Industrial DC Motor Drive DC Link Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding IGBT gate drivers and current sensors on 48 V DC link of variable-frequency motor drives from switching-induced transients. IC Role / Device Role / Timing Role: Fast-response clamping diode placed between DC+ and DC−, absorbing repetitive 18 kW pulses at ≤0.05% duty cycle. Use Value: Extends system MTBF by eliminating cumulative thermal degradation seen with lower-power TVS devices under frequent commutation events. | Use Scenario: Protecting 72 V signaling lines in railway trackside electronics from EFT bursts and lightning-induced surges per EN 50121-4. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used in back-to-back pair) providing symmetric clamping on data/power interfaces. Use Value: Achieves Class 4 immunity per IEC 61000-4-5 (2 Ω source) without increasing board area or BOM count versus discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | 600 W PPP rating, 10.0 V VWM, 17.0 V VC @ 32.4 A - 30× lower peak power capability | Suitable only for low-energy ESD/EFT; cannot meet DO-160 lightning or load dump requirements | Select SMBJ10A only for cost-sensitive consumer-grade circuits with sub-1 kA surge exposure. |
| SMCJ10A | 1500 W PPP rating, 10.0 V VWM, 17.0 V VC @ 87.8 A - 12× lower peak power than MPLAD18KP10AE3 | Valid for basic IEC 61000-4-5 Class 3 (42 Ω), but fails Class 4 and DO-160F Waveform 4 Level 4 | Choose SMCJ10A for industrial controls with moderate surge exposure where PCB space is constrained but 18 kW rating is unnecessary. |
Compared with SMBJ10A and SMCJ10A, the MPLAD18KP10AE3 provides three orders of magnitude higher surge energy handling, enabling single-device compliance with aviation and heavy-duty automotive standards - whereas alternatives require parallel staging or active crowbar circuits to achieve equivalent protection levels.
Availability
MPLAD18KP10AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain systems, and industrial motor drive designs requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MPLAD18KP10AE3 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MPLAD18KP10AE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for mission-critical surge protection where multi-stroke lightning resilience, low thermal resistance, and AEC-Q101 qualification are mandatory.
FAQ
What is the maximum clamping voltage of the MPLAD18KP10AE3 under full-rated surge current?
The MPLAD18KP10AE3 has a maximum clamping voltage (VC) of 17.0 V at its peak pulse current (IPP) of 1059 A under the 10/1000 μs waveform. This value is guaranteed across the operating temperature range and forms the basis for downstream circuit voltage tolerance design. The low clamping ratio (VC/VWM = 1.7) confirms strong overvoltage limiting performance relative to its 10 V standoff rating.
Does the MPLAD18KP10AE3 require heatsinking for reliable operation?
The MPLAD18KP10AE3 does not require an external heatsink when mounted per the recommended FR4 pad layout - its 0.7 °C/W junction-to-case thermal resistance allows effective heat transfer directly into PCB copper. However, for repetitive surge conditions exceeding 0.05% duty factor, thermal derating per Figure 3 in the RF01215 datasheet must be applied to maintain junction temperature below 150°C.
Is the MPLAD18KP10AE3 compliant with automotive qualification standards?
Yes, the MPLAD18KP10AE3 is tested and qualified to AEC-Q101 for stress reliability, covering temperature cycling, humidity, mechanical shock, and surge endurance. It is widely deployed in automotive engine control units and battery management systems requiring robust load dump protection per ISO 7637-2 Pulse 5a, especially where high ambient temperatures and long service life are mandated.
How does the MPLAD18KP10AE3 perform under RTCA DO-160F lightning test conditions?
The MPLAD18KP10AE3 is certified for RTCA DO-160F Section 22 lightning-induced transient testing, including Waveform 4 (6.4/69 μs) Level 4 at 25°C. Its 18,000 W rating and fast response (<100 ps) ensure compliance without derating, making it suitable for primary or secondary protection in aircraft power distribution systems.
What is the meaning of the "E3" suffix in MPLAD18KP10AE3?
"E3" denotes RoHS-compliant matte-tin plating per JEDEC J-STD-020B, indicating lead-free termination compatible with Pb-free reflow soldering processes. This distinguishes it from non-RoHS versions (blank suffix) and ensures environmental compliance for global electronics manufacturing without sacrificing solderability or thermal performance.
MPLAD18KP10AE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 1059A (1.059kA)
- 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
MPLAD18KP10AE3 FAQ
1.How can I place an order for MPLAD18KP10AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP10AE3 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 MPLAD18KP10AE3 reliable?
The price and inventory of MPLAD18KP10AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP10AE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP10AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP10AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP10AE3?
MPLAD18KP10AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP10AE3 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 MPLAD18KP10AE3?
For technical support, including MPLAD18KP10AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP10AE3 requirements.
6.How does Aetrix verify that MPLAD18KP10AE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP10AE3 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 MPLAD18KP10AE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP10AE3?
All MPLAD18KP10AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP10AE3, 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 MPLAD18KP10AE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP10AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP10AE3 Tags
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