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Microchip Technology MPLAD18KP110CA
- Part No.:
- MPLAD18KP110CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP110CA.pdf
- Description:
- TVS DIODE 110VWM 177VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,534
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Product details
Overview
MPLAD18KP110CA 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 110 V reverse standoff voltage (VWM), clamps to ≤177 V at 1000 A peak impulse current, and meets RTCA DO-160F Waveform 4 Level 4 and IEC 61000-4-5 Class 1–5 secondary lightning protection requirements.
For engineers reviewing the MPLAD18KP110CA datasheet, MPLAD18KP110CA pinout, MPLAD18KP110CA application, or MPLAD18KP110CA equivalent, key selection criteria include its bidirectional polarity, 177 V maximum clamping voltage at 1000 A, 110 V working standoff rating, low thermal resistance (RθJC = 0.7 °C/W), and qualification to AEC-Q101 and MIL-PRF-19500 screening levels.
Technical Context
The MPLAD18KP110CA employs a silicon avalanche diode structure optimized for fast response (<5 ns clamping time) and high cumulative energy handling. Its metal-base package enables direct thermal coupling to heatsinks, supporting sustained surge duty cycles with ≤0.05% impulse repetition rate.
It operates across –55 °C to +150 °C junction temperature range and maintains stable breakdown voltage (122–135 V) with ±5% tolerance at I(BR). Standby leakage is limited to 10 μA at 110 V, 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 - enables single-device protection against severe lightning-induced transients per DO-160F and IEC 61000-4-5 |
| Reverse Standoff Voltage (VWM) | 110 V - maximum continuous DC or RMS operating voltage before conduction begins |
| Clamping Voltage (VC) | ≤177 V @ IPP = 1000 A - defines worst-case voltage seen by protected circuit during surge event |
| Breakdown Voltage (V(BR)) | 122–135 V @ I(BR) - ensures reliable turn-on margin above VWM for robust overvoltage detection |
| Thermal Resistance (RθJC) | 0.7 °C/W - allows efficient heat transfer from junction to case, critical for repeated surge endurance |
| Standby Current (ID) | ≤10 μA @ VWM - minimizes quiescent power loss and avoids false triggering in high-impedance circuits |
| Clamping Response Time | <5 ns - limits voltage overshoot during fast-rising transients such as ESD or RFI-induced spikes |
Pinout & Package
The MPLAD18KP110CA uses a low-profile, void-free thermosetting epoxy surface-mount package with metal baseplate for thermal management. The cathode is the metal base (bottom side); anode is the top-side metallized terminals. Package dimensions: 12.32 × 10.54 × 5.33 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top-side pads) | Surge current entry point (bidirectional) | Accepts transient energy from either polarity; connects to protected line(s) requiring symmetrical clamping |
| Cathode (metal base) | Common reference / heat sink interface | Serves as primary thermal path to PCB copper pour or external heatsink; must be soldered to large thermal pad |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetric clamping on AC lines or differential buses without polarity constraints |
| AEC-Q101 qualified | Validated for automotive under-hood and powertrain applications with extended temperature and reliability testing |
| RTCA DO-160F Waveform 4 Level 4 compliance | Guarantees survivability against 6.4/69 μs pin-injection surges up to 110 V standoff systems |
| IEC 61000-4-5 Class 1–5 support (42 Ω source) | Meets full secondary lightning immunity for avionics, rail, and industrial control cabinets |
| MIL-PRF-19500 upscreening options | Supports high-reliability programs requiring lot traceability, burn-in, and parametric screening |
Applications
| Aerospace Avionics Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus in flight control computers and sensor interfaces from DO-160F Section 22 lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting transient voltage to ≤177 V during multi-stroke events. Use Value: Ensures uninterrupted operation of ARINC 429 receivers and analog sensor front-ends under repeated 18 kW surges. | Use Scenario: Safeguarding engine control unit (ECU) inputs during alternator load dump events in 24 V commercial vehicles. IC Role / Device Role / Timing Role: Fast-clamping (sub-5 ns) bidirectional suppressor absorbing 18,000 W pulses without degradation. Use Value: Prevents latch-up or gate oxide damage in microcontroller I/O and CAN transceivers during ISO 7637-2 Pulse 5a/b events. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Shielding PLC analog input modules connected to 110 V AC-powered motor feedback sensors from switching transients. IC Role / Device Role / Timing Role: Standoff-rated (110 V) TVS suppressing induced RFI and EFT bursts per IEC 61000-4-4. Use Value: Maintains signal integrity in 4–20 mA loops by limiting common-mode surges to <177 V at 1000 A. | Use Scenario: Protecting track circuit detectors and axle counter interfaces in EN 50121-3-2 compliant signaling systems. IC Role / Device Role / Timing Role: Secondary lightning protector meeting IEC 61000-4-5 Class 4 with 42 Ω source impedance. Use Value: Enables fail-safe operation during 10/1000 μs surges up to 18 kW without replacement or recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110CA | 600 W PPP rating, SMB package, RθJC ≈ 15 °C/W | Limited to lower-energy transients; unsuitable for DO-160F Level 4 or IEC 61000-4-5 Class 4 | Select only for cost-sensitive consumer-grade designs with <1 kW surge exposure |
| SMCJ110CA | 1500 W PPP rating, SMC package, RθJC ≈ 3.5 °C/W | Cannot sustain repeated 18 kW pulses; lacks AEC-Q101 and DO-160F certification data | Use where board space permits larger SMC footprint but high-reliability validation is not required |
Compared with SMBJ110CA and SMCJ110CA, the MPLAD18KP110CA provides 30× and 12× higher peak pulse power respectively, validated thermal performance for high-duty-cycle surges, and formal qualification to aerospace and automotive standards-making it the only option for mission-critical 110 V systems exposed to lightning or load dump.
Availability
MPLAD18KP110CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain electronics, and industrial motor drive systems requiring stable component supply with long-term lifecycle assurance.
Supply support for MPLAD18KP110CA 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 ICs for aerospace, defense, and industrial markets.
The MPLAD18KP110CA belongs to Microsemi's PLAD family of high-power surface-mount TVS diodes, engineered specifically for multi-stroke lightning protection and automotive load dump compliance in harsh-environment electronics.
FAQ
What is the clamping voltage of the MPLAD18KP110CA at its rated peak pulse current?
The MPLAD18KP110CA has a maximum clamping voltage (VC) of 177 V when subjected to a 1000 A peak impulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events. The MPLAD18KP110CA achieves this clamping performance while maintaining sub-5 ns response time.
Is the MPLAD18KP110CA certified for automotive applications?
Yes, the MPLAD18KP110CA is qualified to AEC-Q101 for stress testing including high-temperature operating life, temperature cycling, and surge robustness. It is explicitly rated for automotive load dump protection per ISO 7637-2 Pulse 5a/b and supports under-hood deployment up to +150 °C junction temperature. The MPLAD18KP110CA also meets moisture sensitivity Level 1 per J-STD-020B, eliminating dry-pack requirements.
Does the MPLAD18KP110CA meet RTCA DO-160F lightning protection requirements?
Yes, the MPLAD18KP110CA is validated for RTCA DO-160F Section 22 lightning-induced transient susceptibility, specifically Waveform 4 (6.4/69 μs) at Level 4 for 110 V systems. It also supports Waveform 5A (40/120 μs) at Level 4 up to 36 V standoff, confirming its suitability for aircraft power distribution and avionics interface protection. The MPLAD18KP110CA's 18,000 W rating directly addresses multi-stroke lightning energy accumulation.
How does the thermal design of the MPLAD18KP110CA differ from standard TVS diodes?
The MPLAD18KP110CA uses a metal-base package with RθJC of just 0.7 °C/W-over 20× lower than typical SMB/SMC packages-enabling direct thermal coupling to PCB copper pours or external heatsinks. This design allows sustained surge duty cycles (≤0.05% repetition rate) without thermal runaway. Unlike standard TVS diodes, the MPLAD18KP110CA's cathode serves as both electrical terminal and primary thermal interface, requiring full-solder coverage of the baseplate per Microsemi's pad layout guidelines.
What is the meaning of the "CA" suffix in MPLAD18KP110CA?
Per Microsemi's nomenclature, the "CA" suffix in MPLAD18KP110CA denotes bidirectional polarity-meaning the device provides symmetrical clamping for both positive and negative transients. This contrasts with "A"-suffixed variants (e.g., MPLAD18KP110A), which are unidirectional and require correct orientation relative to circuit ground. The MPLAD18KP110CA's bidirectional behavior eliminates polarity concerns in AC-coupled or differential signal paths.
MPLAD18KP110CA 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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 102A
- 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
MPLAD18KP110CA FAQ
1.How can I place an order for MPLAD18KP110CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP110CA 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 MPLAD18KP110CA reliable?
The price and inventory of MPLAD18KP110CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP110CA is usually 5 days.
3.What payment methods are accepted for MPLAD18KP110CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP110CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP110CA?
MPLAD18KP110CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP110CA 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 MPLAD18KP110CA?
For technical support, including MPLAD18KP110CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP110CA requirements.
6.How does Aetrix verify that MPLAD18KP110CA is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP110CA 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 MPLAD18KP110CA meets industry standards.
7.What is the process for return or replacement of MPLAD18KP110CA?
All MPLAD18KP110CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP110CA, 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 MPLAD18KP110CA part is unused and in its original packaging.
Return procedure for MPLAD18KP110CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP110CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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