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Microchip Technology MPLAD36KP17CA
- Part No.:
- MPLAD36KP17CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP17CA.pdf
- Description:
- TVS DIODE 17VWM 28.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:9,484
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Product details
Overview
MPLAD36KP17CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 17 V reverse standoff voltage (VWM), clamps to ≤28.8 V at 1250 A peak pulse current (IPP), and operates across –55°C to +150°C junction temperature.
For engineers reviewing the MPLAD36KP17CA datasheet, MPLAD36KP17CA pinout, MPLAD36KP17CA application, or MPLAD36KP17CA equivalent, key selection criteria include its DO-160 Section 22 multi-stroke lightning compliance, IEC 61000-4-5 Class 5 secondary lightning capability (with 42 Ω source), RTCA/DO-160F Waveform 4 Level 4 pin injection rating, and bidirectional polarity confirmed by the "CA" suffix.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transients within nanoseconds, with <5 ns response time for bidirectional operation. Its low RθJC of 1.0 °C/W enables effective thermal coupling to PCB copper or heatsinks, supporting repetitive surge handling under ≤0.05% duty cycle per specification.
The device meets AEC-Q101 stress testing requirements and supports MIL-PRF-19500 upscreening options. Its UL94V-0 void-free epoxy package and tin-plated terminals ensure solderability and flame resistance, while moisture sensitivity level 1 eliminates dry-pack requirements per J-STD-020B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced surges without failure |
| Reverse Standoff Voltage (VWM) | 17 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 18.9–20.9 V @ 5 mA - ensures reliable turn-on margin above VWM |
| Clamping Voltage (VC) | ≤28.8 V @ 1250 A IPP - limits downstream circuit voltage during worst-case surge |
| Peak Pulse Current (IPP) | 1250 A @ 10/1000 μs - quantifies maximum surge current it can divert |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB thermal pad or heatsink |
| Operating Temperature Range | –55°C to +150°C - qualified for under-hood automotive and avionics environments |
Pinout & Package
Package: PLAD (Plastic Leaded Anode/Cathode) - surface-mount, low-profile thermoset epoxy case with metal base cathode terminal; dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H); weight ≈ 1.7–2.0 g; RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface Pad) | Transient current entry point (bidirectional) | Accepts surge polarity in either direction; connects to protected line |
| Cathode (Metal Base / Bottom) | Transient current return path | Must be soldered to large copper pour or heatsink for thermal and electrical performance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional surge suppression | Enables single-device protection on AC lines or differential buses without polarity concerns |
| DO-160 Section 22 multi-stroke lightning compliance | Validated for repeated lightning transients in aircraft systems without degradation |
| IEC 61000-4-5 Class 5 (42 Ω source) | Meets highest severity secondary lightning immunity for long-distance wiring harnesses |
| RTCA/DO-160F Waveform 4 Level 4 (6.4/69 μs) | Protects against pin-injected transients in avionics I/O interfaces up to 300 V standoff |
| AEC-Q101 qualified | Guarantees reliability for automotive powertrain and chassis applications |
Applications
| Aerospace Avionics Power Input | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC power input to flight control computers exposed to lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient voltage suppressor clamping induced line transients before they reach DC-DC converters and microcontrollers. Use Value: Enables compliance with RTCA/DO-160F Level 4 pin injection and multi-stroke lightning without derating or parallel devices. |
Use Scenario: 12 V/24 V battery-fed ECU inputs subjected to ISO 7637-2 Load Dump pulses up to 120 V. IC Role / Device Role / Timing Role: Bidirectional clamping device absorbing >36 kW energy from alternator overvoltage events. Use Value: Eliminates need for external series impedance or additional TVS stages due to low clamping voltage (≤28.8 V) at 1250 A. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: DC link protection in variable-frequency drives where IGBT switching induces high dV/dt transients. IC Role / Device Role / Timing Role: Fast-response (≤5 ns) TVS placed across bus rails to limit voltage overshoot during regenerative braking. Use Value: Prevents IGBT desaturation faults and capacitor overvoltage by clamping within 28.8 V at full 1250 A surge current. |
Use Scenario: Signal line protection in EN 50121-3-2 compliant railway signaling equipment interfacing with trackside sensors. IC Role / Device Role / Timing Role: Secondary surge protector meeting IEC 61000-4-5 Class 4 (12 Ω source) for long cable runs. Use Value: Supports 17 V working voltage while delivering Class 4 immunity up to 280 V standoff (MPLAD36KP280CA), confirming design headroom for MPLAD36KP17CA in lower-voltage segments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ17CA | Lower PPP (400 W), smaller SMC package, 17 V VWM, bidirectional | Suitable only for low-energy I/O protection; cannot replace MPLAD36KP17CA in lightning or load dump scenarios | Select only for cost-sensitive, non-safety-critical signal-level protection where 36 kW capability is unnecessary |
| Vishay V26MLA0603NH | Multi-layer varistor (MLV), 26 V VWM, 150 J energy rating, 0603 size | Slower response (>500 ps), lower surge current capacity, not DO-160 qualified | Use only for board-level ESD/EFT filtering; avoid where fast clamping (<5 ns) or aviation certification is required |
Compared with SMAJ17CA and V26MLA0603NH, the MPLAD36KP17CA provides 90× higher peak power, certified multi-stroke lightning performance, and AEC-Q101/MIL-PRF-19500 screening readiness-making it irreplaceable in high-reliability power-line surge applications.
Availability
MPLAD36KP17CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain electronics, and industrial motor drive systems requiring stable component supply, long-term lifecycle support, and certified surge immunity.
Supply support for MPLAD36KP17CA 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) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP17CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for certified lightning and load dump protection in safety-critical platforms where thermal robustness and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP17CA at its rated peak pulse current?
The MPLAD36KP17CA has a maximum clamping voltage (VC) of 28.8 V when subjected to its rated peak pulse current of 1250 A under 10/1000 μs waveform conditions. This value is measured per standard test methods and guarantees that downstream circuitry remains below critical overvoltage thresholds during surge events. The MPLAD36KP17CA achieves this clamping performance while maintaining sub-5 ns response time in bidirectional mode.
Is MPLAD36KP17CA certified for DO-160 lightning testing?
Yes, the MPLAD36KP17CA is explicitly validated for RTCA/DO-160 Section 22 multi-stroke lightning testing. Its 36 kW peak pulse power rating and thermal design enable sustained performance across multiple lightning strike simulations without parameter shift or failure. The MPLAD36KP17CA is listed in the official documentation as compliant for Level 4 pin injection (Waveform 4) and meets Class 5 secondary lightning requirements with 42 Ω source impedance.
Does MPLAD36KP17CA require a heatsink for standard operation?
The MPLAD36KP17CA does not require an external heatsink for single-event surge suppression, but its metal-base cathode must be soldered to a minimum 1.0 cm² copper pour for thermal dissipation during repetitive surges. With RθJC = 1.0 °C/W, proper PCB layout is essential-especially under ≤0.05% duty cycle conditions. For continuous high-duty applications, forced-air cooling or heatsink attachment to the cathode base is recommended to maintain junction temperature within –55°C to +150°C limits.
How does the "CA" suffix in MPLAD36KP17CA affect its functionality?
The "CA" suffix in MPLAD36KP17CA denotes bidirectional construction, meaning the device clamps transients of either polarity between its anode and cathode terminals. Unlike unidirectional variants (e.g., MPLAD36KP17A), the MPLAD36KP17CA has symmetric breakdown characteristics and is used where AC signals, differential buses, or polarity-agnostic protection is required. The cathode is located on the metal base, and polarity marking applies only to unidirectional versions.
Can MPLAD36KP17CA be used in automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD36KP17CA is tested and qualified to AEC-Q101 standards for discrete semiconductors, covering stress tests including HTGB, HTRB, TCT, and surge. This qualification confirms its suitability for automotive powertrain, chassis, and body electronics subject to harsh thermal and electrical environments. The MPLAD36KP17CA's –55°C to +150°C operating range and 1250 A surge capability align directly with ISO 7637-2 Load Dump requirements for 24 V systems.
MPLAD36KP17CA 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:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 1250A (1.25kA)
- Power - Peak Pulse:
- 36000W (36kW)
- 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
MPLAD36KP17CA FAQ
1.How can I place an order for MPLAD36KP17CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP17CA 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 MPLAD36KP17CA reliable?
The price and inventory of MPLAD36KP17CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP17CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP17CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP17CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP17CA?
MPLAD36KP17CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP17CA 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 MPLAD36KP17CA?
For technical support, including MPLAD36KP17CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP17CA requirements.
6.How does Aetrix verify that MPLAD36KP17CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP17CA 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 MPLAD36KP17CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP17CA?
All MPLAD36KP17CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP17CA, 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 MPLAD36KP17CA part is unused and in its original packaging.
Return procedure for MPLAD36KP17CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP17CA Tags
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