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Microchip Technology MPLAD18KP15CAE3
- Part No.:
- MPLAD18KP15CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP15CAE3.pdf
- Description:
- TVS DIODE 15VWM 24.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,706
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Product details
Overview
MPLAD18KP15CAE3 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 15 V reverse standoff voltage (VWM), clamps to ≤24.4 V at 738 A peak current, and meets RTCA DO-160F Level 4 pin injection and IEC 61000-4-5 Class 1–4 secondary lightning protection.
For engineers reviewing the MPLAD18KP15CAE3 datasheet, MPLAD18KP15CAE3 pinout, MPLAD18KP15CAE3 application, or MPLAD18KP15CAE3 equivalent, key selection criteria include bidirectional clamping capability, low thermal resistance (RθJC = 0.7 °C/W), RoHS-compliant matte-tin terminations, and qualification per AEC-Q101 and MIL-PRF-19500 screening options.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered by avalanche breakdown, with symmetrical bidirectional response enabling protection of AC-coupled or differential signal lines without polarity concerns. Its metal-base package provides direct thermal path to PCB copper, supporting high-repetition transients under ≤0.05% duty factor per Figure 1.
It complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (lightning) using 2 Ω, 12 Ω, and 42 Ω source impedances - validated across Classes 1–5 depending on VWM. Pin injection immunity per RTCA/DO-160F Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) is confirmed for VWM ≤130 V and ≤36 V respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - enables single-device suppression of severe lightning-induced surges in avionics and vehicle ECUs |
| Reverse Standoff Voltage (VWM) | 15 V - matches nominal 12 V automotive and 15 V industrial bus operating voltages with margin |
| Max Clamping Voltage (VC) | 24.4 V @ IPP = 738 A - ensures downstream ICs rated ≥25 V remain within safe operating area during surge |
| Breakdown Voltage (V(BR)) | 16.7–18.5 V @ I(BR) - defines precise avalanche initiation threshold for repeatable clamping behavior |
| Thermal Resistance (RθJC) | 0.7 °C/W - allows >90% of surge energy to dissipate directly into PCB copper, minimizing junction temperature rise |
| Standby Current (ID) | 10 μA @ 15 V - negligible leakage at operating voltage, avoiding battery drain in always-on systems |
| Temperature Coefficient (αV(BR)) | 15 mV/°C - predictable V(BR) drift over -55°C to +150°C junction range supports robust design margining |
Pinout & Package
Package: Surface-mount PLAD (Plastic Leaded Anode/Cathode) with metal baseplate for thermal conduction. Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ≈1 g. Cathode terminal is the exposed metal base (bottom side); anode is top-side metallization.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Baseplate | Cathode (Bidirectional) | Primary heat sink interface and low-inductance return path; must be soldered to large copper pour |
| Top-Side Metallization | Anode (Bidirectional) | High-current surge entry point; connects to protected line via minimal trace length |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetric clamping on AC or floating differential lines without polarity constraints |
| AEC-Q101 qualified | Validated reliability for automotive under-hood applications including temperature cycling and humidity exposure |
| RoHS-compliant matte-tin plating | Ensures lead-free solder compatibility and long-term intermetallic stability per MIL-STD-750 Method 2026 |
| RTCA DO-160F Level 4 compliance | Meets stringent aircraft pin-injection immunity requirements for Waveform 4 (6.4/69 μs) |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life restrictions per IPC/JEDEC J-STD-020B |
Applications
| Avionics Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC power inputs in flight control computers against lightning-induced transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary clamping element placed at board edge before DC-DC converters and microcontrollers. Use Value: Withstands multi-stroke lightning events up to 18 kW while maintaining <24.4 V clamping to preserve 3.3 V/5 V logic supply integrity. | Use Scenario: Safeguarding CAN FD and LIN bus interfaces in engine management systems exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional shunt protector across differential bus lines, absorbing both positive and negative transients. Use Value: 15 V VWM aligns with 12 V nominal bus; 738 A IPP handles worst-case 12 V load dump energy without degradation. |
| Industrial Motor Drive I/O | Railway Signaling Interface |
Use Scenario: Shielding encoder feedback lines and analog sensor inputs in variable-frequency drives subjected to switching noise and ground bounce. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to connector pins to minimize stub inductance. Use Value: Sub-100 ps response time ensures clamping initiates before sensitive ADCs or comparators are overdriven. | Use Scenario: Securing 75 Ω coaxial video and data links in train-mounted signaling equipment against ESD and induced RFI per EN 50121-3-2. IC Role / Device Role / Timing Role: Bidirectional transient suppressor bridging shielded pair conductors at entry point. Use Value: Metal-base thermal path sustains repeated 10/1000 μs surges in confined enclosures without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | 600 W PPP rating, SMC package, RθJC ≈ 12 °C/W | Limited to single-stroke or low-duty-cycle surges; unsuitable for DO-160 multi-stroke validation | Select only for cost-sensitive non-aerospace designs where 18 kW capability is unnecessary |
| SMCJ15CA | 1500 W PPP rating, same SMC package, higher V(BR) tolerance spread (16.7–18.5 V vs. 16.7–19.0 V) | Cannot meet RTCA DO-160F Level 4 pin injection or IEC 61000-4-5 Class 4 with 42 Ω source | Acceptable for basic ESD/EFT protection in commercial-grade industrial controls but not certified systems |
Compared with SMBJ15CA and SMCJ15CA, the MPLAD18KP15CAE3 delivers 30× and 12× higher peak pulse power respectively, enables certified multi-stroke lightning resilience, and provides superior thermal management via metal-base mounting - critical for aerospace and high-reliability automotive deployments.
Availability
MPLAD18KP15CAE3 is available at Aetrix Electronics and suitable for avionics power distribution, automotive ECU protection, and industrial motor drive I/O requiring stable component supply with full traceability and long-lifecycle support.
Supply support for MPLAD18KP15CAE3 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 MPLAD series was developed specifically for high-power, surface-mount transient suppression in safety-critical platforms where multi-stroke lightning resilience, AEC-Q101 qualification, and MIL-PRF-19500 upscreening are mandatory.
FAQ
What is the clamping voltage of MPLAD18KP15CAE3 at its rated peak pulse current?
The MPLAD18KP15CAE3 has a maximum clamping voltage (VC) of 24.4 V when subjected to its peak pulse current (IPP) of 738 A under 10/1000 μs waveform conditions. This value is guaranteed per the Electrical Characteristics table in RF01215 Rev B and ensures protected circuitry remains below 25 V during surge events. The MPLAD18KP15CAE3 achieves this with minimal voltage overshoot due to its low dynamic impedance and optimized junction layout.
Is MPLAD18KP15CAE3 qualified for automotive applications?
Yes, the MPLAD18KP15CAE3 is AEC-Q101 qualified, confirming its suitability for automotive under-hood and powertrain applications. It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and mechanical shock per AEC-Q101 requirements. The MPLAD18KP15CAE3 also supports optional MIL-PRF-19500 screening for enhanced reliability in mission-critical automotive subsystems such as engine control units and ADAS domain controllers.
Does MPLAD18KP15CAE3 require a heatsink for standard operation?
No external heatsink is required for transient suppression duty cycles ≤0.05%, as the MPLAD18KP15CAE3's metal-base package provides direct thermal conduction to the PCB copper plane. Its RθJC of 0.7 °C/W allows >90% of surge energy to dissipate into the board. However, steady-state power dissipation is limited to 2.5 W at 25°C ambient, so continuous DC power handling requires additional thermal design - the MPLAD18KP15CAE3 is intended for transient-only protection, not sustained overvoltage regulation.
How does the "CA" suffix in MPLAD18KP15CAE3 indicate device functionality?
The "CA" suffix in MPLAD18KP15CAE3 explicitly denotes bidirectional construction, meaning the device provides symmetrical clamping for both positive and negative transients. Unlike unidirectional variants (e.g., MPLAD18KP15AE3), the CA version has no polarity marking and functions identically regardless of voltage polarity applied across its terminals. This makes the MPLAD18KP15CAE3 ideal for protecting AC-coupled interfaces, differential buses like RS-485 or CAN, and floating sensor lines where polarity reversal may occur.
What standards does MPLAD18KP15CAE3 meet for lightning protection?
The MPLAD18KP15CAE3 meets IEC 61000-4-5 secondary lightning protection up to Class 4 with 42 Ω source impedance and Class 2–3 with 2 Ω source impedance. It also satisfies RTCA DO-160F Section 22 for multi-stroke lightning in aircraft systems, achieving Level 4 pin injection immunity for Waveform 4 (6.4/69 μs). These certifications are verified per the test data in RF01215 Rev B and apply specifically to the MPLAD18KP15CAE3 - not inferred from family-level claims.
MPLAD18KP15CAE3 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 738A
- 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
MPLAD18KP15CAE3 FAQ
1.How can I place an order for MPLAD18KP15CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP15CAE3 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 MPLAD18KP15CAE3 reliable?
The price and inventory of MPLAD18KP15CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP15CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP15CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP15CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP15CAE3?
MPLAD18KP15CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP15CAE3 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 MPLAD18KP15CAE3?
For technical support, including MPLAD18KP15CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP15CAE3 requirements.
6.How does Aetrix verify that MPLAD18KP15CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP15CAE3 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 MPLAD18KP15CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP15CAE3?
All MPLAD18KP15CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP15CAE3, 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 MPLAD18KP15CAE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP15CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP15CAE3 Tags
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