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Microchip Technology MPLAD18KP17CAE3
- Part No.:
- MPLAD18KP17CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD18KP17CAE3.pdf
- Description:
- TVS DIODE 17VWM 27.6VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,519
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Product details
Overview
MPLAD18KP17CAE3 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 17 V reverse standoff voltage (VWM), clamps to ≤27.6 V at 653 A peak impulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD18KP17CAE3 datasheet, MPLAD18KP17CAE3 pinout, MPLAD18KP17CAE3 application, or MPLAD18KP17CAE3 equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin injection immunity per RTCA/DO-160F Waveform 4 Level 4, and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
This TVS diode operates as a clamping-type protector with symmetrical bidirectional avalanche breakdown behavior. Its low thermal resistance (RθJC = 0.7 °C/W) enables rapid heat dissipation during repetitive surges, and its <5 ns response time ensures sub-microsecond clamping onset under fast transients like ESD and lightning-induced spikes.
The device uses a void-free UL94V-0 epoxy package with tin-lead or RoHS-compliant matte-tin plating, and its metal base serves as the cathode terminal for both polarities-critical for PCB layout and thermal pad design. Standby current ID is ≤10 μA at VWM, supporting low-power system monitoring integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous operating voltage before clamping begins; matches 12–15 V nominal bus systems with margin. |
| V(BR) min/max | 18.9–20.9 V - Breakdown initiates within this range at 5 mA; ensures reliable turn-on without premature conduction. |
| VC @ IPP | 27.6 V max at 653 A - Clamping voltage limits downstream IC stress during worst-case 10/1000 μs surges. |
| PPP | 18,000 W @ 10/1000 μs - Sustains high-energy transients such as automotive load dump or aircraft lightning coupling. |
| RθJC | 0.7 °C/W - Enables direct mounting to heatsink or copper pour for thermal management in high-duty-cycle environments. |
| Moisture Sensitivity | Level 1 per J-STD-020B - No dry pack required; supports standard SMT reflow without baking. |
| RoHS | e3 suffix - Compliant with EU RoHS Directive 2011/65/EU; lead-free matte-tin termination. |
Pinout & Package
Package: Surface-mount PLAD (Power Leadless Array Device), 2-terminal metal-base construction. Dimensions: 12.32 × 10.54 × 5.33 mm (L × W × H); metal base serves as common cathode terminal for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Top-side marked) | Anode (for one polarity) | Connects to protected line; polarity marking on body identifies orientation relative to metal base. |
| Metal Base (Bottom) | Cathode (common for both polarities) | Serves as thermal path and electrical return; must be soldered to large copper area or heatsink for RθJC = 0.7 °C/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Enables single-device protection of AC lines or differential buses without polarity concerns. |
| RTCA DO-160F Waveform 4 Level 4 compliance | Withstands 6.4/69 μs pin-injection transients up to 17 V VWM devices-validated for avionics signal line hardening. |
| IEC 61000-4-5 Class 4 support (42 Ω source) | Meets secondary lightning immunity for industrial control cabinets and ground vehicle ECUs. |
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control modules and battery management systems. |
| 3σ lot norm screening on ID | Ensures consistent low-leakage performance across production lots-critical for always-on sensor interfaces. |
Applications
| Aerospace Avionics Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC power inputs in flight control computers against induced lightning currents 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: Limits transient voltage to ≤27.6 V during 18 kW surges, preserving logic-level integrity and avoiding latch-up in downstream ASICs. | Use Scenario: Safeguarding CAN and LIN bus transceivers and sensor supply rails from alternator load dump events. IC Role / Device Role / Timing Role: Bidirectional TVS placed across VCC-GND and signal pairs to absorb both positive and negative polarity transients. Use Value: Withstands 1000 A surge pulses while maintaining <10 μA standby leakage-no impact on low-power sleep modes. |
| Industrial Motor Drive Control Board | Railway Signaling Interface Module |
Use Scenario: Shielding gate driver ICs and isolated feedback circuits from IGBT switching noise and inductive kickback. IC Role / Device Role / Timing Role: Mounted directly at power entry points and isolated DC supplies to minimize loop inductance. Use Value: Achieves <5 ns response time and 0.7 °C/W thermal resistance-enabling repeated surge handling without thermal runaway. | Use Scenario: Hardening Ethernet and RS-485 communication ports in trackside signaling units against lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Bidirectional TVS deployed on data lines and power rails per EN 50121-4 immunity requirements. Use Value: Meets IEC 61000-4-5 Class 4 (42 Ω) and Class 2 (2 Ω) simultaneously-reducing BOM count for multi-environment 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 |
|---|---|---|---|
| SMBJ17CA | 600 W PPP rating (vs. 18,000 W); DO-214AA package; higher RθJA (≈50 °C/W). | Suitable only for low-energy ESD/EFT; cannot meet DO-160 lightning or load dump requirements. | Select SMBJ17CA only for cost-sensitive consumer electronics where surge energy is <100 J. |
| SMCJ17CA | 1500 W PPP rating; DO-214AB package; RθJC ≈ 2.5 °C/W; no AEC-Q101 or DO-160 validation. | Lacks qualification for aerospace or automotive safety-critical systems; limited thermal capability. | Choose SMCJ17CA for industrial PLC I/O modules requiring basic IEC 61000-4-5 Class 3 protection. |
Compared with SMBJ17CA and SMCJ17CA, the MPLAD18KP17CAE3 provides 30× and 12× higher peak pulse power respectively, validated thermal performance for sustained surge duty, and formal qualification to RTCA DO-160 and AEC-Q101-making it the only option for certified high-reliability platforms.
Availability
MPLAD18KP17CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain control, and industrial motor drive applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MPLAD18KP17CAE3 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 MPLAD series was developed specifically for high-energy transient suppression in mission-critical systems-emphasizing thermal robustness, multi-stroke lightning endurance, and qualification-grade reliability testing.
FAQ
What is the clamping voltage of the MPLAD18KP17CAE3 at its rated peak pulse current?
The MPLAD18KP17CAE3 has a maximum clamping voltage (VC) of 27.6 V at its rated peak impulse current (IPP) of 653 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in RF01215 Rev B and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MPLAD18KP17CAE3 maintains this clamping performance across its full operating temperature range when mounted per recommended pad layout.
Does the MPLAD18KP17CAE3 meet AEC-Q101 qualification requirements?
Yes, the MPLAD18KP17CAE3 is tested and qualified to AEC-Q101 standards for discrete semiconductors, as confirmed in the RF01215 Rev B datasheet. This qualification covers stress tests including HTGB, HTRB, TST, and mechanical shock-validating suitability for automotive under-hood applications. The MPLAD18KP17CAE3 also carries high-reliability screening options aligned with MIL-PRF-19500.
How does the metal base function electrically in the MPLAD18KP17CAE3?
The metal base of the MPLAD18KP17CAE3 serves as the common cathode terminal for both polarities in its bidirectional configuration. Unlike conventional dual-diode arrangements, this monolithic structure uses the base as the shared low-impedance return path-requiring direct soldering to a thermal pad or heatsink. This design achieves RθJC = 0.7 °C/W and ensures symmetrical clamping behavior across the device's terminals.
Can the MPLAD18KP17CAE3 be used for RTCA DO-160F Waveform 5A protection?
No-the MPLAD18KP17CAE3 is rated for RTCA DO-160F Waveform 4 (6.4/69 μs) Level 4 only, as specified in RF01215 Rev B. For Waveform 5A (40/120 μs), the datasheet restricts use to MPLAD18KP7.0A–36CA variants. Using MPLAD18KP17CAE3 for Waveform 5A would exceed its validated test envelope and compromise compliance assurance.
What is the moisture sensitivity level (MSL) and reflow profile requirement for MPLAD18KP17CAE3?
The MPLAD18KP17CAE3 is rated MSL Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and requires no dry-pack or baking prior to SMT assembly. Its solder temperature rating is 260 °C for 10 seconds, compatible with standard lead-free reflow profiles. The e3 suffix confirms RoHS-compliant matte-tin plating that meets MIL-STD-750 Method 2026 solderability requirements.
MPLAD18KP17CAE3 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 653A
- 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
MPLAD18KP17CAE3 FAQ
1.How can I place an order for MPLAD18KP17CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD18KP17CAE3 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 MPLAD18KP17CAE3 reliable?
The price and inventory of MPLAD18KP17CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD18KP17CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD18KP17CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD18KP17CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD18KP17CAE3?
MPLAD18KP17CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD18KP17CAE3 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 MPLAD18KP17CAE3?
For technical support, including MPLAD18KP17CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD18KP17CAE3 requirements.
6.How does Aetrix verify that MPLAD18KP17CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD18KP17CAE3 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 MPLAD18KP17CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD18KP17CAE3?
All MPLAD18KP17CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD18KP17CAE3, 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 MPLAD18KP17CAE3 part is unused and in its original packaging.
Return procedure for MPLAD18KP17CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD18KP17CAE3 Tags
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