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Microchip Technology MPLAD36KP26CA
- Part No.:
- MPLAD36KP26CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP26CA.pdf
- Description:
- TVS DIODE 26VWM 43VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,575
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Product details
Overview
MPLAD36KP26CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, features a 26 V reverse standoff voltage (VWM), clamps to ≤43.0 V at 838 A peak pulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements for aircraft electronics.
For engineers reviewing the MPLAD36KP26CA datasheet, MPLAD36KP26CA pinout, MPLAD36KP26CA application, or MPLAD36KP26CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin injection immunity per RTCA/DO-160F Waveform 4 (Level 4/5), and ESD/EFT compliance per IEC 61000-4-2/-4-4.
Technical Context
This bidirectional TVS operates without polarity constraints across AC-coupled or differential signal lines, enabling symmetric clamping on both polarities. Its low RθJC of 1.0 °C/W and void-free thermosetting epoxy package support thermal management under repeated surges up to 0.05% duty factor.
It is rated for junction temperatures from –55 °C to +150 °C and exhibits a temperature coefficient of breakdown voltage (αVBR) of 24 mV/°C - critical for stable clamping performance across wide ambient ranges in avionics and vehicle ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains full-rated lightning-level energy without failure in single or multi-stroke events. |
| Reverse Standoff Voltage (VWM) | 26 V - maximum continuous operating voltage before conduction; matches 24 V nominal bus systems with margin. |
| Breakdown Voltage (VBR) | 28.9–31.9 V @ 5 mA - ensures reliable turn-on above system transients while avoiding false triggering. |
| Max Clamping Voltage (VC) | 43.0 V @ 838 A - limits downstream IC stress to safe levels during DO-160 Level 4/5 pin injection or load dump. |
| Standby Current (ID) | ≤10 μA @ 26 V - negligible leakage in standby, preserving battery life in always-on avionics subsystems. |
| Thermal Resistance (RθJC) | 1.0 °C/W - enables efficient heat transfer to PCB copper pour or heatsink, supporting >1000 surge cycles with <0.05% duty factor. |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - no dry pack or baking required prior to reflow, simplifying SMT assembly. |
Pinout & Package
Surface-mount PLAD package with metal base cathode (bidirectional symmetry eliminates anode/cathode distinction). Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ~1.7–2.0 g. Void-free UL94V-0 epoxy body with matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (top side marking) | Anode-side connection | Electrically identical to Terminal 2 in bidirectional operation; no polarity sensitivity - connects to protected line or node. |
| Terminal 2 (metal base) | Cathode-side connection / thermal path | Provides low-inductance return path and primary thermal conduction route to PCB ground plane or heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Enables protection of AC-coupled data lines (e.g., RS-485, CAN FD) without external polarity routing. |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for Level 4 (up to 300 VWM) and Level 5 (up to 300 VWM for Waveform 4; up to 38 VWM for Waveform 5A) pin injection immunity. |
| IEC 61000-4-5 secondary lightning protection | Qualified across 42 Ω, 12 Ω, and 2 Ω source impedances - covers Class 1–5 testing for aircraft, rail, and heavy-duty vehicle systems. |
| AEC-Q101 qualified | Meets stress test requirements for automotive electronic components including HTSL, TCT, and surge endurance. |
| High-reliability screening options | Available with MIL-PRF-19500 upscreening (M, MA, MX, MXL levels) for extended lot traceability and 3σ ID screening. |
Applications
| Aircraft Avionics Power Bus | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC power inputs in flight control computers against lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary secondary surge clamp on main power rail, placed upstream of DC/DC converters and PMICs. Use Value: Limits clamped voltage to 43.0 V - below absolute maximum ratings of 45 V input PMICs and ensures no latch-up or damage during multi-stroke events. | Use Scenario: Safeguarding CAN FD and LIN communication ports in engine bay ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional line protector on differential bus pairs, absorbing common-mode transients without disrupting signal integrity. Use Value: Symmetric clamping prevents DC bias shift on AC-coupled buses and maintains signal eye diagram compliance under 100 A surge conditions. |
| Railway Signaling Interface | Industrial Motor Drive Control Board |
Use Scenario: Shielding Ethernet PHY and RS-485 interfaces in trackside signaling units from induced surges during nearby lightning strikes. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), handling residual energy and fast-rising edges. Use Value: 838 A IPP capacity and 43.0 V clamping ensure Ethernet PHYs (e.g., DP83848) remain within 3.3 V or 5 V I/O tolerance during IEC 61000-4-5 Class 4 (42 Ω) tests. | Use Scenario: Guarding isolated gate driver inputs and analog sensor front-ends on variable-frequency drive control boards against switching noise and ground bounce. IC Role / Device Role / Timing Role: Localized transient suppressor at connector entry points and sensitive IC inputs, minimizing PCB trace inductance impact. Use Value: Sub-100 ps response time and 1.0 °C/W RθJC enable rapid energy diversion and thermal stability during repetitive 10 kHz PWM switching transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA | 600 W PPP rating, 26 V VWM, 43.0 V VC @ 13.1 A - 60× lower energy handling than MPLAD36KP26CA. | Suitable only for board-level ESD and low-energy EFT; cannot meet DO-160 lightning or IEC 61000-4-5 Class 3+. | Select SMBJ26CA only for cost-sensitive consumer-grade designs where surge energy is limited to <100 W. |
| SMCJ26CA | 1500 W PPP rating, same VWM/VC, but 30× lower peak power than MPLAD36KP26CA and higher RθJA (50 °C/W vs. 1.0 °C/W). | Acceptable for automotive load dump (ISO 7637-2) but fails multi-stroke lightning validation and thermal cycling in avionics. | Choose SMCJ26CA when footprint constraints prohibit PLAD size and application does not require RTCA DO-160 compliance. |
Compared with SMBJ26CA and SMCJ26CA, the MPLAD36KP26CA provides 60× and 24× higher peak pulse power respectively, direct thermal path to PCB, and certified qualification for aviation lightning standards - making it non-substitutable in safety-critical airborne systems.
Availability
MPLAD36KP26CA is available at Aetrix Electronics and suitable for aircraft avionics, automotive powertrain electronics, railway signaling interfaces, and industrial motor drive control requiring stable component supply across long production lifecycles.
Supply support for MPLAD36KP26CA 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, radiation-tolerant, and aerospace-grade components.
The MPLAD series was engineered specifically for high-energy transient suppression in mission-critical platforms where multi-stroke lightning resilience, thermal robustness, and long-term reliability outweigh cost or size constraints.
FAQ
What is the clamping voltage of the MPLAD36KP26CA at its rated peak pulse current?
The MPLAD36KP26CA has a maximum clamping voltage (VC) of 43.0 V at its rated peak pulse current of 838 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MPLAD36KP26CA maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is the MPLAD36KP26CA suitable for use in automotive applications compliant with AEC-Q101?
Yes, the MPLAD36KP26CA is tested and qualified to AEC-Q101 standards for stress testing including high-temperature operating life, temperature cycling, and surge endurance. Its bidirectional construction, 26 V standoff, and 36 kW surge rating make it appropriate for protecting engine control units, battery management systems, and ADAS domain controllers against load dump and ISO 7637-2 pulses. The MPLAD36KP26CA also supports optional MIL-PRF-19500 upscreening for enhanced automotive Tier-1 requirements.
Does the MPLAD36KP26CA require special PCB layout considerations for thermal management?
Yes - the MPLAD36KP26CA relies on its metal base (Terminal 2) for primary thermal conduction. To achieve the specified RθJC of 1.0 °C/W, the PCB must include a minimum 10.5 mm × 12.3 mm copper pour connected directly to Terminal 2, using ≥4 thermal vias (0.3 mm diameter, filled or plated) to inner-layer ground planes. The RF01216 datasheet specifies pad layout dimensions (A = 11.94 mm, B = 5.85 mm) and warns that reduced copper area increases junction temperature and degrades surge endurance. The MPLAD36KP26CA's thermal design is integral to its 36,000 W rating.
Can the MPLAD36KP26CA be used for bidirectional signal line protection such as RS-485 or CAN FD?
Yes, the MPLAD36KP26CA is explicitly designed for bidirectional protection and is commonly deployed on differential bus lines like RS-485, CAN FD, and MIL-STD-1553. Its symmetrical clamping characteristic ensures equal voltage limiting on both polarities without polarity-dependent routing. With a 26 V VWM, it accommodates 24 V nominal bus systems while providing headroom for common-mode transients. The MPLAD36KP26CA's sub-100 ps response time preserves signal edge integrity, and its low capacitance (<100 pF typical) avoids data rate degradation on high-speed links.
What certifications and standards does the MPLAD36KP26CA meet for aviation applications?
The MPLAD36KP26CA is validated for RTCA DO-160F Section 22 multi-stroke lightning (Waveform 4 and 5A), achieving Level 4 up to 300 VWM and Level 5 up to 300 VWM for Waveform 4. It also satisfies IEC 61000-4-5 secondary lightning protection across 42 Ω, 12 Ω, and 2 Ω source impedances (Class 1–5), and complies with ESD (IEC 61000-4-2) and EFT (IEC 61000-4-4). These qualifications are documented in Microsemi's RF01216 datasheet and supported by lot traceability and surge testing records for each MPLAD36KP26CA production batch.
MPLAD36KP26CA 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 838A
- 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
MPLAD36KP26CA FAQ
1.How can I place an order for MPLAD36KP26CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP26CA 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 MPLAD36KP26CA reliable?
The price and inventory of MPLAD36KP26CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP26CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP26CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP26CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP26CA?
MPLAD36KP26CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP26CA 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 MPLAD36KP26CA?
For technical support, including MPLAD36KP26CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP26CA requirements.
6.How does Aetrix verify that MPLAD36KP26CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP26CA 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 MPLAD36KP26CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP26CA?
All MPLAD36KP26CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP26CA, 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 MPLAD36KP26CA part is unused and in its original packaging.
Return procedure for MPLAD36KP26CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP26CA Tags
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