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Microchip Technology MPLAD36KP14CAE3
- Part No.:
- MPLAD36KP14CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP14CAE3.pdf
- Description:
- TVS DIODE 14VWM 24VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,087
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Product details
Overview
MPLAD36KP14CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It delivers 36 kW peak pulse power at 10/1000 μs, features a 14 V reverse standoff voltage (VWM), clamps to ≤24.0 V at 3000 A peak impulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP14CAE3 datasheet, MPLAD36KP14CAE3 pinout, MPLAD36KP14CAE3 application, or MPLAD36KP14CAE3 equivalent, key selection criteria include bidirectional polarity, 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, IEC 61000-4-5 Class 5 secondary lightning compliance (42 Ω source), and RTCA/DO-160F Waveform 4 Level 4 pin injection protection.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry, activating when transient voltage exceeds its breakdown threshold (15.6–17.2 V). Its low RθJC (1.0 °C/W) enables effective heat dissipation into a PCB copper plane or heatsink under repetitive surge conditions up to 0.05% duty factor.
The bidirectional construction allows symmetric suppression of positive and negative transients without polarity sensitivity. It complies with ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and multi-pulse lightning standards including RTCA DO-160F Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) with temperature-derated performance per MicroNote 132.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 14 V - maximum continuous DC or RMS operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 15.6–17.2 V @ 5 mA - precise turn-on threshold ensuring reliable overvoltage detection |
| Max Clamping Voltage (VC) | 24.0 V @ 3000 A IPP - limits downstream voltage stress during worst-case surge events |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct thermal coupling to PCB copper for high-repetition-rate surge handling |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack required, simplifies SMT assembly logistics |
| RoHS Compliance | e3 marking - lead-free matte-tin plating compatible with Pb-free reflow profiles |
Pinout & Package
Package: PLAD - low-profile void-free thermosetting epoxy case (UL94V-0), metal base cathode termination, dimensions 12.32 × 10.54 × 5.08 mm (L × W × H), weight ~1.7–2.0 g. Mounting requires recommended pad layout per datasheet Figure 6 for optimal thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface) | Transient Current Entry (Bidirectional) | Accepts positive or negative surge current; symmetrical conduction path |
| Cathode (Metal Base) | Transient Current Return / Heat Sink Interface | Primary thermal path to PCB copper; must be soldered to large thermal pad per datasheet layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Surge Suppression | Enables single-device protection of AC-coupled or floating bus lines without polarity constraints |
| 36 kW Peak Pulse Rating | Meets RTCA DO-160 Section 22 multi-stroke lightning test requirements for avionics power inputs |
| 1.0 °C/W RθJC | Supports >1000 surge cycles at 0.05% duty factor when mounted on FR4 with recommended thermal pad |
| IEC 61000-4-5 Class 5 Compliance | Validated for secondary lightning protection with 42 Ω source impedance across full distance classes |
| RTCA/DO-160F Waveform 4 Level 4 | Guaranteed pin-injection immunity to 6.4/69 μs transients up to 100 Vpk at 25°C |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC main bus in commercial aircraft avionics bays exposed to lightning-induced transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional clamping TVS placed upstream of DC-DC converters and flight control interface ICs. Use Value: Limits bus voltage to ≤24.0 V during 36 kW surges, preventing latch-up or burnout in downstream silicon rated for <30 V absolute max. |
Use Scenario: 12 V battery-fed engine control unit (ECU) subjected to ISO 7637-2 Load Dump pulses up to 120 V. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input rail, absorbing energy before it reaches LDOs and microcontrollers. Use Value: Withstands ≥1000 A peak current at 120 V, clamping to 24.0 V within <100 ps-well below 36 V damage threshold of typical automotive MCUs. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: 48 V DC link in variable-frequency drives where IGBT switching induces repetitive 1–5 kV transients. IC Role / Device Role / Timing Role: Parallel-mounted TVS across DC bus capacitors to shunt commutation spikes. Use Value: 1.0 °C/W thermal resistance enables stable operation under 0.05% duty cycle surges without derating-critical for continuous-duty drives. |
Use Scenario: 72 V signaling line in European railway interlocking systems requiring EN 50121-3-2 surge immunity. IC Role / Device Role / Timing Role: Bidirectional protector on track-side communication ports interfacing with centralized control units. Use Value: Meets IEC 61000-4-5 Class 4 (12 Ω source) up to 280 V VWM, enabling use on 72 V nominal lines with 2× safety margin. |
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, 5.0 mm × 4.5 mm SMB package, RθJC ≈ 25 °C/W | Only suitable for single-event, low-duty-cycle surges (e.g., consumer electronics); fails under DO-160 multi-stroke testing | Select only for cost-sensitive, non-aerospace applications with <100 A IPP requirements |
| SMCJ14CA | 1500 W PPP, 7.2 mm × 6.2 mm SMC package, RθJC ≈ 12 °C/W, no MIL-PRF-19500 screening option | Lacks RTCA DO-160F Waveform 4/5A validation and high-reliability traceability; limited to industrial grade | Use where DO-160 compliance is not required but higher power than SMBJ is needed |
Compared with SMBJ14CA and SMCJ14CA, the MPLAD36KP14CAE3 provides 24× and 24× higher peak power handling respectively, validated clamping response for aviation lightning standards, and traceable high-reliability manufacturing-making it the sole choice for certified airborne systems and mission-critical industrial power rails.
Availability
MPLAD36KP14CAE3 is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and certified surge immunity.
Supply support for MPLAD36KP14CAE3 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, with emphasis on radiation-hardened, high-voltage, and surge-tolerant components.
The MPLAD series was developed specifically for high-power, surface-mount transient suppression in certified avionics and harsh-environment transportation systems-prioritizing thermal robustness, multi-stroke endurance, and standards-compliant validation over cost or footprint minimization.
FAQ
What is the clamping voltage of MPLAD36KP14CAE3 at its rated peak pulse current?
The MPLAD36KP14CAE3 has a maximum clamping voltage (VC) of 24.0 V when subjected to its rated peak impulse current of 3000 A under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and guarantees downstream circuit protection below critical voltage thresholds for 28 V aerospace and 12 V automotive systems. The MPLAD36KP14CAE3 maintains this clamping performance across its qualified temperature range.
Does MPLAD36KP14CAE3 meet RTCA DO-160 lightning protection requirements?
Yes, the MPLAD36KP14CAE3 is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 at 25°C. Its 36 kW rating and low clamping voltage ensure compliance across all specified stroke counts and repetition rates. The MPLAD36KP14CAE3 documentation references MicroNote 132 for temperature derating guidance during qualification.
How is thermal management implemented for MPLAD36KP14CAE3 in PCB layout?
Thermal management for MPLAD36KP14CAE3 relies on soldering its metal base (cathode) to a large, thermally optimized copper pad per the datasheet's recommended pad layout-minimum 11.94 mm × 5.85 mm with thermal vias to inner ground planes. Its 1.0 °C/W junction-to-case resistance requires this direct thermal path to dissipate 36 kW surges without exceeding 150°C junction temperature. The MPLAD36KP14CAE3 datasheet specifies FR4 mounting conditions and derating curves for sustained operation.
Is MPLAD36KP14CAE3 suitable for IEC 61000-4-5 Class 5 secondary lightning protection?
Yes, the MPLAD36KP14CAE3 is certified for IEC 61000-4-5 Class 5 secondary lightning protection with 42 Ω source impedance across both short- and long-distance configurations. It also supports Class 4 with 12 Ω and 2 Ω sources up to 280 V and 130 V VWM respectively. These ratings are confirmed in the official RF01216 Rev B datasheet tables for MPLAD36KP14CAE3 and related CA-suffix variants.
What does the 'CA' suffix and 'e3' suffix indicate in MPLAD36KP14CAE3?
The 'CA' suffix in MPLAD36KP14CAE3 denotes bidirectional polarity, enabling symmetric suppression of positive and negative transients. The 'e3' suffix confirms RoHS-compliant matte-tin plating per JEDEC J-STD-020B Level 1 moisture sensitivity-eliminating dry-pack requirements and supporting lead-free reflow. Together, these identifiers specify the exact construction, compliance, and electrical behavior of the MPLAD36KP14CAE3 device.
MPLAD36KP14CAE3 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
MPLAD36KP14CAE3 FAQ
1.How can I place an order for MPLAD36KP14CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP14CAE3 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 MPLAD36KP14CAE3 reliable?
The price and inventory of MPLAD36KP14CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP14CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP14CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP14CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP14CAE3?
MPLAD36KP14CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP14CAE3 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 MPLAD36KP14CAE3?
For technical support, including MPLAD36KP14CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP14CAE3 requirements.
6.How does Aetrix verify that MPLAD36KP14CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP14CAE3 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 MPLAD36KP14CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP14CAE3?
All MPLAD36KP14CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP14CAE3, 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 MPLAD36KP14CAE3 part is unused and in its original packaging.
Return procedure for MPLAD36KP14CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP14CAE3 Tags
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