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Microchip Technology MPLAD36KP54CA
- Part No.:
- MPLAD36KP54CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP54CA.pdf
- Description:
- TVS DIODE 54VWM 87.1VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,526
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Product details
Overview
MPLAD36KP54CA 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 transients to ≤87.1 V at 414 A, and features a 54 V reverse standoff voltage (VWM) with ±5% breakdown tolerance (60.0–66.3 V). It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP54CA datasheet, MPLAD36KP54CA pinout, MPLAD36KP54CA application, or MPLAD36KP54CA equivalent, key selection criteria include its bidirectional polarity, 1.0 °C/W junction-to-case thermal resistance, IEC 61000-4-5 Class 4 compliance at 42 Ω source impedance, and suitability for secondary lightning protection in avionics power distribution and engine control units.
Technical Context
The MPLAD36KP54CA operates as a silicon avalanche diode-based TVS, leveraging controlled breakdown behavior to clamp fast-rising transients without latch-up. Its bidirectional construction enables symmetric clamping for AC-coupled or floating signal/power lines, and its low RθJC (1.0 °C/W) supports direct mounting to metal-core PCBs or heatsinks for sustained multi-pulse operation.
It is characterized under standardized 10/1000 μs waveform testing per IEC 61000-4-5 and RTCA DO-160F Waveform 4 & 5A, with verified clamping performance up to 414 A peak impulse current (IPP) and <100 ps response time from 0 V to V(BR) in unidirectional mode (equivalent for bidirectional conduction onset).
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) | 54 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 60.0–66.3 V @ 5 mA - defines precise conduction threshold with tight 5% tolerance |
| Max Clamping Voltage (VC) | 87.1 V @ 414 A - limits downstream voltage stress during worst-case surge |
| Peak Pulse Current (IPP) | 414 A @ 10/1000 μs - quantifies maximum surge current it can divert safely |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or external heatsink |
| Standby Leakage Current (ID) | 10 μA @ 54 V - negligible power loss in standby, critical for low-power avionics rails |
Pinout & Package
Package: PLAD (Plastic Leaded Anodeless Device), surface-mount, void-free UL94V-0 epoxy body with metal baseplate acting as cathode terminal. Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ≈ 1.7–2.0 g. Mounting requires recommended pad layout (A = 11.94 mm, B = 5.85 mm) for optimal thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Baseplate (Bottom) | Cathode (Bidirectional Common Terminal) | Serves as primary thermal path and low-inductance return path; must be soldered to large copper pour or heatsink |
| Top Surface Pad | Anode (Bidirectional Common Terminal) | Electrically symmetric with baseplate; forms bidirectional conduction path between terminals |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Enables protection of AC-coupled data lines or floating DC buses without polarity concerns |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications requiring robustness across temperature and life cycles |
| RTCA DO-160F Section 22 compliance | Proven multi-stroke lightning survivability for commercial and military aircraft electrical systems |
| IEC 61000-4-5 Class 4 support (42 Ω) | Meets stringent secondary lightning immunity for avionics power inputs and sensor interfaces |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints-ready for standard SMT reflow |
Applications
| Avionics Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC main bus feeders in regional aircraft against induced lightning transients per DO-160F Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS device placed at bus entry point to clamp surges before reaching upstream converters and downstream loads. Use Value: Limits clamped voltage to 87.1 V, preserving 100 V-rated input capacitors and preventing MOSFET gate oxide breakdown in DC/DC modules. | Use Scenario: Safeguarding 54 V-rated CAN FD and LIN transceivers in next-gen ECU power domains exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary surge suppression element on switched 24 V supply rail feeding microcontroller and communication ICs. Use Value: Withstands 414 A surges while maintaining leakage <10 μA, avoiding false resets or communication dropouts during cold-cranking events. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Secondary protection on 54 V auxiliary DC link in IGBT-based traction inverters subjected to switching-induced dv/dt and grid coupling noise. IC Role / Device Role / Timing Role: Fast-response TVS shunting transient energy away from gate drivers and isolated feedback sensors. Use Value: Sub-100 ps response ensures clamping activation before 50 ns edge rates propagate into sensitive analog front-ends. | Use Scenario: Shielding 54 V trackside signaling receivers from induced surges caused by nearby lightning strikes or switching of high-current relays. IC Role / Device Role / Timing Role: Bidirectional transient suppressor on differential RS-485/RS-422 pairs interfacing to outdoor cabinets. Use Value: Symmetric clamping prevents common-mode voltage inversion that could corrupt Manchester-encoded data streams. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CA | 600 W PPP rating, 54 V VWM, SMB package, RθJA = 50 °C/W | Limited to single-stroke or low-duty-cycle surges; unsuitable for DO-160F multi-stroke validation | Select when cost-sensitive, low-energy environments require RoHS-compliant SMB footprint |
| 5.0SMDJ54CA | 5000 W PPP rating, same VWM, SMC package, RθJC = 2.5 °C/W | Lower energy handling than MPLAD36KP54CA; fails IEC 61000-4-5 Class 4 at 42 Ω | Choose where board space allows larger SMC but system-level surge stress is below 36 kW |
Compared with SMBJ54CA and 5.0SMDJ54CA, the MPLAD36KP54CA provides 6× and 7.2× higher peak pulse power respectively, enabling certified multi-stroke lightning resilience in safety-critical platforms where thermal management and long-term reliability outweigh footprint constraints.
Availability
MPLAD36KP54CA is available at Aetrix Electronics and suitable for avionics power distribution, automotive ECU protection, and industrial motor drive DC link applications requiring stable component supply, long-lifecycle assurance, and traceable high-reliability sourcing.
Supply support for MPLAD36KP54CA 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 solutions for aerospace, defense, and industrial markets.
The MPLAD36KP54CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for certified lightning and load-dump protection in mission-critical systems where thermal performance and multi-event survivability are non-negotiable.
FAQ
What is the clamping voltage of the MPLAD36KP54CA at its rated peak pulse current?
The MPLAD36KP54CA has a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current of 414 A under 10/1000 μs waveform conditions. This value is measured across the device terminals during standardized surge testing and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Is the MPLAD36KP54CA suitable for RTCA DO-160F Section 22 lightning testing?
Yes, the MPLAD36KP54CA is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. Its 36 kW peak pulse power rating, bidirectional symmetry, and sub-100 ps response time meet the energy and timing requirements for Level 4 and Level 5 pin-injection waveforms (Waveform 4 and 5A) across its full VWM range, including the 54 V variant.
Does the MPLAD36KP54CA require special handling due to moisture sensitivity?
No, the MPLAD36KP54CA is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and does not require dry packing or baking prior to SMT assembly. This simplifies manufacturing logistics and eliminates moisture-related popcorning risk during reflow.
How is thermal management implemented for the MPLAD36KP54CA in high-repetition surge scenarios?
The MPLAD36KP54CA achieves effective thermal management via its 1.0 °C/W junction-to-case thermal resistance and metal-baseplate construction. For high-repetition surge scenarios, the baseplate must be soldered to a minimum 10 cm² copper pour or attached to an external heatsink using thermally conductive interface material to maintain junction temperature below 150 °C.
What is the polarity configuration indicated by the "CA" suffix in MPLAD36KP54CA?
Per Microsemi nomenclature, the "CA" suffix in MPLAD36KP54CA denotes bidirectional construction. Unlike unidirectional variants (e.g., MPLAD36KP54A), the CA version provides symmetrical clamping in both voltage polarities, making it ideal for protecting AC-coupled signals, floating power rails, or differential interfaces where polarity reversal may occur.
MPLAD36KP54CA 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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 414A
- 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
MPLAD36KP54CA FAQ
1.How can I place an order for MPLAD36KP54CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP54CA 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 MPLAD36KP54CA reliable?
The price and inventory of MPLAD36KP54CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP54CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP54CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP54CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP54CA?
MPLAD36KP54CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP54CA 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 MPLAD36KP54CA?
For technical support, including MPLAD36KP54CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP54CA requirements.
6.How does Aetrix verify that MPLAD36KP54CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP54CA 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 MPLAD36KP54CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP54CA?
All MPLAD36KP54CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP54CA, 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 MPLAD36KP54CA part is unused and in its original packaging.
Return procedure for MPLAD36KP54CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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