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Microchip Technology MPLAD36KP20CA
- Part No.:
- MPLAD36KP20CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP20CA.pdf
- Description:
- TVS DIODE 20VWM 34VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,158
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Product details
Overview
MPLAD36KP20CA 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, clamps transients to ≤34.0 V at 1059 A, and features a 20 V reverse standoff voltage (VWM) with ±18 mV/°C temperature coefficient of breakdown voltage - enabling robust secondary lightning protection per IEC 61000-4-5 and RTCA DO-160F Waveform 4 Level 4 in aircraft avionics.
For engineers reviewing the MPLAD36KP20CA datasheet, MPLAD36KP20CA pinout, MPLAD36KP20CA application, or MPLAD36KP20CA equivalent, this device is selected for high-reliability DC bus protection where multi-stroke surge endurance, low thermal resistance (RθJC = 1.0 °C/W), and RoHS-compliant e3 plating are critical design requirements.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device during transient overvoltage events, leveraging avalanche breakdown across its bidirectional PN junction structure. Its metal-base package provides direct thermal path to PCB copper, supporting sustained energy dissipation under repetitive 0.05% duty-cycle surges.
It meets AEC-Q101 stress testing and supports MIL-PRF-19500 upscreening options (MX/MXL levels). Clamping response time is <5 ns, and it achieves full suppression compliance with 42 Ω, 12 Ω, and 2 Ω source impedances per IEC 61000-4-5 Class 1–5 test configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - enables single-device protection against severe lightning-induced transients without cascaded staging |
| Reverse Standoff Voltage (VWM) | 20 V - sets maximum continuous operating voltage before leakage exceeds 10 μA, matching 24 V nominal systems with margin |
| Breakdown Voltage (V(BR)) | 22.2–24.5 V @ 5 mA - ensures reliable turn-on before downstream IC damage thresholds in 24 V rail applications |
| Max Clamping Voltage (VC) | 34.0 V @ 1059 A - limits protected circuit voltage to safe level during worst-case surge, preserving 30 V-rated components |
| Thermal Resistance (RθJC) | 1.0 °C/W - allows >70 W steady-state dissipation when mounted on heatsink, reducing thermal derating in compact layouts |
| Temperature Coefficient (αV(BR)) | +18 mV/°C - predicts predictable V(BR) drift over −55°C to +150°C junction range, simplifying margin analysis |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - eliminates dry-pack requirement and bake-out prior to reflow, lowering manufacturing cost |
Pinout & Package
Package: PLAD (Plastic Low-profile Anode-Diode) - void-free UL94V-0 epoxy body with metal baseplate for thermal conduction; dimensions 12.32 × 10.54 × 5.08 mm (L × W × H); weight ~1.85 g; RoHS-compliant matte-tin plating (e3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface) | Positive terminal for unidirectional mode; symmetric terminal for bidirectional operation | Connected to protected line; polarity-insensitive in bidirectional MPLAD36KP20CA configuration |
| Cathode (Metal Base) | Common reference terminal / thermal path | Soldered directly to large copper pour or heatsink; serves as primary heat extraction path and ground reference |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Enables symmetrical clamping on AC or floating DC lines without polarity concerns - essential for CAN bus, sensor bridges, and isolated power monitoring |
| 3σ lot norm screening on ID | Guarantees standby current ≤45 μA at 20 V across production lots - prevents hidden leakage-induced battery drain in always-on avionics subsystems |
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, and ESD stress - supports use in engine control, ADAS power domains, and EV charging interfaces |
| RTCA DO-160F Waveform 4 Level 4 compliance | Withstands 6.4/69 μs pin-injection transients up to 20 V standoff - certified for flight-critical data acquisition and actuator drive circuits |
| IEC 61000-4-5 Class 5 support (42 Ω source) | Meets highest secondary lightning immunity for short-distance aircraft wiring - eliminates need for external series impedance in zone-restricted harnesses |
Applications
| Aircraft Avionics Power Rails | Automotive 24 V Load Dump Protection |
|---|---|
Use Scenario: Protection of ARINC 429 receivers, inertial measurement units (IMUs), and flight control sensors powered from 28 V DC distribution buses subject to lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient clamp placed upstream of DC-DC converters and LDOs; responds within <5 ns to limit voltage excursion below 34 V. Use Value: Eliminates need for multi-stage TVS+MOV designs by absorbing 36 kW pulses in single component - reduces board area by 40% vs. legacy solutions. |
Use Scenario: Guarding engine control modules (ECMs) and transmission control units (TCUs) against ISO 7637-2 Pulse 5a/b load dump events in commercial trucks and off-highway vehicles. IC Role / Device Role / Timing Role: Bidirectional crowbar suppressing both positive and negative transients on 24 V supply lines during alternator field decay. Use Value: Withstands ≥1000 surge cycles at 1059 A without parameter shift - extends service life beyond 15-year vehicle lifecycle requirements. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface Protection |
Use Scenario: Safeguarding gate drivers and current-sense amplifiers on 24–48 V DC bus of variable-frequency drives exposed to IGBT switching noise and regenerative braking spikes. IC Role / Device Role / Timing Role: Fast-response shunt element clamping bus voltage overshoots before they propagate to sensitive analog front-ends. Use Value: RθJC = 1.0 °C/W enables direct mounting to bus bar - achieves 2× higher thermal cycling endurance than SMC-based TVS alternatives. |
Use Scenario: Protecting track circuit detectors and axle counter inputs in EN 50121-3-2 compliant signaling systems subjected to induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Secondary protector after gas discharge tube (GDT) front-end, handling residual fast-rising transients with sub-5 ns response. Use Value: Meets IEC 61000-4-5 Class 4 (2 Ω source) at 20 V standoff - ensures interoperability with legacy GDT-coordinated protection architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | 600 W PPP rating, SMA package, RθJC = 40 °C/W - 60× lower surge capacity, no DO-160 qualification | Limited to consumer electronics or non-safety-critical 24 V IoT nodes; unsuitable for aerospace or automotive power rails | Select only for cost-sensitive, low-energy applications where 36 kW capability is unnecessary |
| SMCJ20CA | 1500 W PPP, SMC package, RθJC = 15 °C/W - 24× lower power rating, lacks AEC-Q101 and DO-160 certification | Acceptable for industrial PLC I/O modules but fails RTCA/IEC lightning compliance testing at system level | Use where footprint constraints prevent PLAD mounting, but verify full-system surge test pass with engineering margin |
Compared with SMBJ20CA and SMCJ20CA, the MPLAD36KP20CA delivers 60× and 24× higher peak pulse power respectively, with certified aerospace-grade reliability, lower thermal resistance, and validated compliance to DO-160F and IEC 61000-4-5 - making it the sole option for mission-critical 24 V rail protection requiring multi-stroke endurance.
Availability
MPLAD36KP20CA is available at Aetrix Electronics and suitable for aircraft avionics, automotive ECMs, industrial motor drives, and railway signaling systems requiring stable component supply across extended product lifecycles and rigorous environmental qualification.
Supply support for MPLAD36KP20CA 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) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened ICs for aerospace, defense, and industrial markets.
The MPLAD36KP20CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for DO-160-compliant lightning protection in space-constrained, thermally demanding environments such as airborne electronics enclosures and engine bay controllers.
FAQ
What is the clamping voltage of MPLAD36KP20CA at its rated peak pulse current?
The MPLAD36KP20CA exhibits a maximum clamping voltage (VC) of 34.0 V when subjected to its peak pulse current (IPP) of 1059 A under 10/1000 μs waveform conditions. This value is guaranteed across the full operating temperature range and forms the basis for downstream component voltage margining in 24 V systems. The MPLAD36KP20CA maintains this clamping performance even after repeated surge exposure due to its robust silicon die and low-RθJC package.
Is MPLAD36KP20CA suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD36KP20CA is explicitly tested and qualified to AEC-Q101 standards, covering stress tests such as high-temperature operating life (HTOL), temperature cycling (TC), and human-body-model ESD. This qualification validates its suitability for under-hood automotive applications like engine control units and battery management systems. The MPLAD36KP20CA also supports optional MIL-PRF-19500 upscreening for enhanced reliability tiers.
Does MPLAD36KP20CA require moisture preconditioning before reflow soldering?
No, the MPLAD36KP20CA carries IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1 rating, meaning it may be stored indefinitely at ambient conditions and placed directly into reflow without baking or dry-packing. This eliminates process steps and cost associated with moisture-sensitive device handling. The MPLAD36KP20CA's void-free epoxy encapsulation and e3 RoHS plating contribute to this robust manufacturability profile.
How does the thermal performance of MPLAD36KP20CA compare to standard SMC TVS diodes?
The MPLAD36KP20CA achieves a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W - over 15× lower than typical SMC-package TVS diodes (~15 °C/W). This enables significantly higher steady-state power dissipation and reduced thermal derating in high-ambient environments. When mounted on a 2 oz copper heatsink pad, the MPLAD36KP20CA sustains >70 W continuously, whereas an SMCJ20CA would exceed safe junction temperature at <5 W.
Can MPLAD36KP20CA be used for RTCA DO-160F Section 22 lightning protection?
Yes, the MPLAD36KP20CA is specifically designed and validated for RTCA DO-160F Section 22 multi-stroke lightning protection, including Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 compliance. Its 36 kW rating and <5 ns response ensure full pass in aircraft-level surge testing. The MPLAD36KP20CA is referenced in Microsemi's application guidance for DO-160-compliant avionics power entry designs.
MPLAD36KP20CA 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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 34V
- Current - Peak Pulse (10/1000µs):
- 1059A (1.059kA)
- 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
MPLAD36KP20CA FAQ
1.How can I place an order for MPLAD36KP20CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP20CA 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 MPLAD36KP20CA reliable?
The price and inventory of MPLAD36KP20CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP20CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP20CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP20CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP20CA?
MPLAD36KP20CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP20CA 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 MPLAD36KP20CA?
For technical support, including MPLAD36KP20CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP20CA requirements.
6.How does Aetrix verify that MPLAD36KP20CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP20CA 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 MPLAD36KP20CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP20CA?
All MPLAD36KP20CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP20CA, 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 MPLAD36KP20CA part is unused and in its original packaging.
Return procedure for MPLAD36KP20CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP20CA Tags
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