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Microchip Technology MPLAD36KP14CA
- Part No.:
- MPLAD36KP14CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP14CA.pdf
- Description:
- TVS DIODE 14VWM 24VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,308
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Product details
Overview
MPLAD36KP14CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps at ≤24.0 V (max) under 3000 A peak impulse current, and features a 14 V reverse standoff voltage (VWM), meeting RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP14CA datasheet, MPLAD36KP14CA pinout, MPLAD36KP14CA application, or MPLAD36KP14CA equivalent, key selection criteria include its bidirectional polarity, 1.0 °C/W junction-to-case thermal resistance, IEC 61000-4-5 Class 5 secondary lightning compliance (42 Ω source), and RTCA/DO-160F Waveform 4 Level 4 pin injection capability.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating above its 15.6–17.2 V breakdown voltage (V(BR)) to divert surge energy to ground. Its low RθJC (1.0 °C/W) enables effective thermal management on FR4 PCBs with recommended pad layout, supporting repetitive surges at ≤0.05% duty factor.
It meets dual-standard surge immunity: IEC 61000-4-2/4-4 for ESD/EFT, and IEC 61000-4-5 for lightning-induced transients across 2–42 Ω source impedances. Bidirectional construction ensures symmetric clamping for AC-coupled or floating signal lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V maximum working standoff voltage - sets minimum operating voltage margin before clamping activation |
| V(BR) min/max | 15.6–17.2 V at 5 mA - defines precise conduction threshold for reliable overvoltage triggering |
| VC @ IPP | ≤24.0 V at 3000 A - limits downstream voltage stress during worst-case 10/1000 μs surge |
| PPP | 36,000 W @ 10/1000 μs - sustains single-stroke lightning-level energy without failure |
| RθJC | 1.0 °C/W - enables direct thermal coupling to heatsink or copper pour for sustained multi-pulse operation |
| ID @ VWM | ≤5 μA - ensures negligible leakage current in normal operation, preserving system power budget |
| αV(BR) | 10 mV/°C - quantifies temperature-induced drift for accurate clamping margin design over -55°C to +150°C |
Pinout & Package
Package: PLAD (Plastic Leaded Anodeless Device) - void-free UL94V-0 epoxy body with metal base cathode contact; 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) | AC-side connection point | Exposed metal top surface serves as anode terminal for bidirectional conduction path |
| Cathode (Metal Base) | Ground/reference node | Entire bottom metal surface acts as cathode - requires full-surface solder pad for optimal thermal and electrical performance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Enables protection of AC-coupled interfaces (e.g., RS-485, CAN bus) without polarity sensitivity |
| RTCA DO-160F Waveform 4 Level 4 compliance | Withstands 6.4/69 μs pin-injection transients up to 14 V VWM rating - validated for aircraft avionics I/O |
| IEC 61000-4-5 Class 5 (42 Ω source) | Supports long-distance secondary lightning protection per standard - critical for airframe wiring harnesses |
| MIL-PRF-19500 upscreening option | Enables high-reliability qualification (e.g., MXL level) for mission-critical aerospace deployments |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints - simplifies SMT assembly logistics |
Applications
| Aircraft Avionics I/O Protection | Automotive Power Distribution |
|---|---|
Use Scenario: Protecting ARINC 429 data lines and sensor inputs in flight control computers against lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface to shunt transients before entering FPGA or ASIC I/O cells. Use Value: Meets RTCA DO-160 Section 22 multi-stroke lightning test with ≤24.0 V clamping - prevents latch-up or gate oxide damage in 28 nm logic. | Use Scenario: Safeguarding 12 V battery-fed ECUs (e.g., ABS, ADAS domain controllers) during load dump events. IC Role / Device Role / Timing Role: Primary surge suppression element mounted at main power entry point, upstream of DC/DC converters. Use Value: Handles 36 kW pulses without degradation - maintains <5 μA standby leakage to avoid battery drain in sleep mode. |
| Industrial Ethernet Switch Ports | Railway Signaling Interfaces |
Use Scenario: Shielding PoE+ (IEEE 802.3at) data pairs from induced surges in factory-floor cabling. IC Role / Device Role / Timing Role: Common-mode TVS pair across differential pairs, leveraging bidirectional symmetry for polarity-agnostic protection. Use Value: Clamps at ≤24.0 V while sustaining 3000 A - preserves signal integrity for 1 Gbps Ethernet links during EMC testing. | Use Scenario: Securing 70 V DC track signaling circuits against traction current switching transients and lightning coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS installed at field cable entry to relay modules, referenced to rail ground. Use Value: Complies with IEC 61000-4-5 Class 3 (2 Ω source) - limits voltage overshoot to <24 V during 1 kA surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14CA | 600 W PPP rating (vs. 36,000 W); SMA package; 1.0 mm pitch; RθJC ≈ 40 °C/W | Targeted at consumer-grade board-level ESD, not aircraft lightning or automotive load dump | Select only for cost-sensitive, low-energy applications where 36 kW capability is unnecessary |
| SMCJ14CA | 1500 W PPP rating; SMC package; 2.3 mm pitch; RθJC ≈ 12 °C/W; same VWM/V(BR) range | Suitable for industrial motor drives but lacks RTCA DO-160F validation and MIL-PRF-19500 screening options | Use when DO-160 compliance is not required and thermal demands are moderate |
Compared with SMBJ14CA and SMCJ14CA, the MPLAD36KP14CA provides 60× and 24× higher peak pulse power respectively, coupled with aerospace-grade traceability, DO-160F certification, and 1.0 °C/W thermal resistance - making it irreplaceable for certified aviation and high-reliability automotive systems.
Availability
MPLAD36KP14CA is available at Aetrix Electronics and suitable for aircraft avionics, automotive ECU power distribution, industrial Ethernet switch ports, and railway signaling interfaces requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP14CA 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 timing solutions for aerospace, defense, and industrial markets, with emphasis on radiation-hardened and DO-160-qualified components.
The MPLAD36KP14CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection in certified airborne equipment and harsh-environment vehicle electronics.
FAQ
What is the clamping voltage specification for MPLAD36KP14CA under maximum rated surge current?
The MPLAD36KP14CA has a maximum clamping voltage (VC) of 24.0 V when subjected to its peak impulse current (IPP) of 3000 A under the standardized 10/1000 μs waveform. This value is measured at 25°C and ensures downstream circuitry remains below critical voltage thresholds during high-energy transients. The MPLAD36KP14CA maintains this clamping performance across its qualified operating temperature range.
Does MPLAD36KP14CA meet RTCA DO-160F Section 22 lightning test requirements?
Yes, the MPLAD36KP14CA is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. Its 36 kW peak pulse power rating, low RθJC (1.0 °C/W), and bidirectional architecture enable repeated surge handling without degradation. The MPLAD36KP14CA supports Level 4 pin injection per Waveform 4 (6.4/69 μs) and meets Class 5 secondary lightning protection requirements with 42 Ω source impedance.
How is polarity identified on the MPLAD36KP14CA package?
The MPLAD36KP14CA is a bidirectional TVS, so it has no functional polarity - both terminals behave identically under reverse or forward surge conditions. Unlike unidirectional variants, it does not mark cathode polarity on the body. The metal base serves as one terminal and the top metallized surface as the other; orientation in layout is non-critical. This symmetry is intrinsic to the MPLAD36KP14CA design and confirmed in the official Microsemi nomenclature guide.
What thermal management guidance applies to MPLAD36KP14CA in PCB layout?
For optimal thermal performance, the MPLAD36KP14CA requires a full-surface solder pad on the PCB matching its metal base footprint (12.32 × 10.54 mm), connected to internal copper planes via ≥6 thermal vias (0.3 mm diameter, filled). The datasheet specifies RθJC = 1.0 °C/W when mounted per recommended pad layout on FR4. Derating begins above 100°C case temperature, and steady-state power dissipation is limited to 71 W at TC = 100°C - a key constraint for the MPLAD36KP14CA in high-duty-cycle environments.
Is MPLAD36KP14CA compliant with RoHS and moisture sensitivity standards?
Yes, the MPLAD36KP14CA carries the "e3" suffix indicating full RoHS compliance (lead-free matte-tin plating). It is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and requires no dry-packaging or baking prior to reflow soldering. These qualifications are verified in the RF01216 Rev B datasheet and apply specifically to the MPLAD36KP14CA variant.
MPLAD36KP14CA 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 1500A (1.5kA)
- 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
MPLAD36KP14CA FAQ
1.How can I place an order for MPLAD36KP14CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP14CA 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 MPLAD36KP14CA reliable?
The price and inventory of MPLAD36KP14CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP14CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP14CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP14CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP14CA?
MPLAD36KP14CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP14CA 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 MPLAD36KP14CA?
For technical support, including MPLAD36KP14CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP14CA requirements.
6.How does Aetrix verify that MPLAD36KP14CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP14CA 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 MPLAD36KP14CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP14CA?
All MPLAD36KP14CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP14CA, 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 MPLAD36KP14CA part is unused and in its original packaging.
Return procedure for MPLAD36KP14CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP14CA Tags
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