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Microchip Technology MPLAD36KP43CAE3
- Part No.:
- MPLAD36KP43CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP43CAE3.pdf
- Description:
- TVS DIODE 43VWM 69.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,827
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Product details
Overview
MPLAD36KP43CAE3 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 43 V reverse standoff voltage (VWM), clamps to ≤69.4 V at 519 A peak pulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP43CAE3 datasheet, MPLAD36KP43CAE3 pinout, MPLAD36KP43CAE3 application, or MPLAD36KP43CAE3 equivalent, key selection criteria include its bidirectional polarity, 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant e3 termination, IEC 61000-4-5 Class 5 secondary lightning protection capability, and compatibility with FR4 PCB mounting per recommended pad layout.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry, activating when transient voltage exceeds its 43 V standoff threshold. Its silicon avalanche structure enables sub-100 ps response time and stable breakdown voltage (47.8–52.8 V at 5 mA), with temperature coefficient of +0.05 %/°C.
It is rated for 36,000 W peak pulse power under standard 10/1000 μs waveform, supports steady-state dissipation up to 71 W at 100°C case temperature, and achieves low thermal resistance (1.0 °C/W) via direct metal-base cathode contact - critical for repeated surge handling in avionics and load-dump scenarios.
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) | 43 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 47.8–52.8 V @ 5 mA - defines precise conduction onset for predictable protection margin |
| Clamping Voltage (VC) | ≤69.4 V @ 519 A IPP - limits downstream voltage stress during worst-case transients |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or copper pour for multi-stroke reliability |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack required; supports standard SMT reflow |
| RoHS Compliance | e3 matte-tin plating - lead-free, solderable per MIL-STD-750 Method 2026 |
Pinout & Package
Package: PLAD (Plastic Low-profile Anode-down) - void-free UL94V-0 epoxy body with metal base cathode terminal; dimensions 12.32 × 10.54 × 5.08 mm (L×W×H); weight ~1.85 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface) | Positive transient path input | Connects to protected line; forms symmetrical clamping path with cathode in bidirectional mode |
| Cathode (Metal Base) | Common reference / heat sink interface | Direct thermal path to PCB copper or heatsink; must be soldered to large thermal pad per layout spec |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Protects AC-coupled or floating lines (e.g., RS-485, CAN bus, sensor bridges) without polarity constraints |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for Level 4/5 pin-injection immunity - essential for certified avionics equipment |
| IEC 61000-4-5 Class 5 support (42 Ω source) | Meets highest secondary lightning immunity for long-distance wiring in aircraft and rail systems |
| AEC-Q101 qualified | Automotive-grade reliability including surge testing, lot traceability, and 3σ ID screening |
| Low-profile SMT footprint | Enables high-power protection in space-constrained modules without through-hole mounting |
Applications
| Aerospace Avionics Power Bus | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC distribution in flight control computers exposed to DO-160 Section 22 lightning-induced transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across main power rail to clamp induced surges before they reach DC/DC converters. Use Value: Withstands ≥500 multi-stroke events at 69.4 V clamping, preserving system uptime and certification integrity. |
Use Scenario: 12 V battery-fed ECU inputs subjected to ISO 7637-2 Pulse 5a (load dump up to 60 V). IC Role / Device Role / Timing Role: Primary overvoltage clamp on power entry, coordinated with upstream fuse and downstream LDO. Use Value: Limits rail voltage to ≤69.4 V within 100 ps, preventing MOSFET gate oxide rupture and microcontroller latch-up. |
| Industrial Motor Drive I/O | Railway Signaling Interface |
Use Scenario: Analog current-loop (4–20 mA) transmitters connected to variable-frequency drives with high dv/dt noise coupling. IC Role / Device Role / Timing Role: Bidirectional TVS on signal pair to suppress coupled RFI and switching transients. Use Value: Clamps common-mode surges to <69.4 V while maintaining 43 V working margin - avoids false triggering of analog front-end. |
Use Scenario: 72 V DC track signaling circuits exposed to lightning-induced ground potential rise per EN 50121-4. IC Role / Device Role / Timing Role: Secondary protector on field-side interface, downstream of gas discharge tube primary stage. Use Value: Provides Class 5 IEC 61000-4-5 immunity at 42 Ω source impedance - ensures fail-safe operation during thunderstorms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Lower PPP (600 W), SMA package, RθJC = 40 °C/W - limited to single-event or low-duty-cycle use | Not suitable for DO-160 multi-stroke or IEC 61000-4-5 Class 5; used in consumer/commercial grade designs | Select SMBJ43CA only where surge energy is <1% of MPLAD36KP43CAE3 rating and thermal mass is constrained |
| SMCJ43CA | PPP = 1500 W, SMC package, RθJC = 10 °C/W - higher power than SMBJ but still 24× lower than MPLAD36KP43CAE3 | Lacks DO-160F Waveform 4/5A validation and AEC-Q101 qualification; not approved for aviation safety-critical paths | Use SMCJ43CA for cost-sensitive industrial controls where full aerospace compliance is not required |
Compared with SMBJ43CA and SMCJ43CA, the MPLAD36KP43CAE3 provides 24× and 24× higher peak pulse power respectively, validated multi-stroke endurance, and certified compliance for aviation and rail safety standards - making it irreplaceable in mission-critical surge environments.
Availability
MPLAD36KP43CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECUs, industrial motor drives, and railway signaling systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MPLAD36KP43CAE3 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MPLAD36KP43CAE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection in certified avionics and harsh-environment electronics where thermal robustness and regulatory compliance are non-negotiable.
FAQ
What is the clamping voltage of MPLAD36KP43CAE3 at its rated peak pulse current?
The MPLAD36KP43CAE3 has a maximum clamping voltage (VC) of 69.4 V at 519 A peak pulse current (IPP) under the standard 10/1000 μs waveform. This value is guaranteed across temperature and ensures downstream components remain within safe operating voltage limits during surge events. The MPLAD36KP43CAE3 achieves this with minimal voltage overshoot due to its low-inductance PLAD package and optimized silicon junction design.
Is MPLAD36KP43CAE3 suitable for automotive applications per AEC-Q101?
Yes, the MPLAD36KP43CAE3 is AEC-Q101 qualified and tested per the standard's requirements for stress testing, surge robustness, and lot traceability. It is explicitly rated for automotive load dump protection (ISO 7637-2 Pulse 5a) and supports under-hood ECU designs where sustained thermal performance and multi-event reliability are mandatory. The MPLAD36KP43CAE3 data sheet confirms full AEC-Q101 compliance in its reliability section.
Does MPLAD36KP43CAE3 meet RTCA DO-160F lightning test requirements?
Yes, the MPLAD36KP43CAE3 is validated for RTCA DO-160F Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) Level 4 and Level 5, and Waveform 5A (40/120 μs) Level 4 and Level 5. Its 36 kW rating and low thermal resistance enable reliable performance across repeated strokes - a requirement for FAA-certified avionics. The MPLAD36KP43CAE3 is listed in Microsemi's DO-160F compliance documentation for these exact waveforms.
What is the thermal resistance and recommended mounting for MPLAD36KP43CAE3?
The MPLAD36KP43CAE3 has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, achieved via direct metal-base cathode contact. It must be mounted on an FR4 PCB using the specified pad layout (11.94 × 5.85 mm thermal pad) with full-solder coverage to maximize heat transfer. The MPLAD36KP43CAE3 derating curve shows 100% power capability only when case temperature is maintained ≤100°C - requiring adequate copper area or external heatsinking for sustained operation.
How does the bidirectional construction of MPLAD36KP43CAE3 affect its circuit implementation?
The 'CA' suffix denotes bidirectional construction, meaning the MPLAD36KP43CAE3 clamps symmetrically for both positive and negative transients - ideal for AC-coupled interfaces like RS-485, CAN, or sensor bridges where polarity is undefined. Unlike unidirectional TVS diodes, the MPLAD36KP43CAE3 requires no orientation during placement and eliminates risk of reverse-bias damage. Its dual-junction design ensures matched clamping thresholds in both directions, verified per the datasheet's VC specifications.
MPLAD36KP43CAE3 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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 519A
- 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
MPLAD36KP43CAE3 FAQ
1.How can I place an order for MPLAD36KP43CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP43CAE3 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 MPLAD36KP43CAE3 reliable?
The price and inventory of MPLAD36KP43CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP43CAE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP43CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP43CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP43CAE3?
MPLAD36KP43CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP43CAE3 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 MPLAD36KP43CAE3?
For technical support, including MPLAD36KP43CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP43CAE3 requirements.
6.How does Aetrix verify that MPLAD36KP43CAE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP43CAE3 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 MPLAD36KP43CAE3 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP43CAE3?
All MPLAD36KP43CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP43CAE3, 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 MPLAD36KP43CAE3 part is unused and in its original packaging.
Return procedure for MPLAD36KP43CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP43CAE3 Tags
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