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Microchip Technology MPLAD36KP26A/TR
- Part No.:
- MPLAD36KP26A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP26A/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:5,317
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Product details
Overview
MPLAD36KP26A/TR from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 26 V working standoff voltage (VWM), 28.9–31.9 V breakdown voltage (VBR), and 43.0 V clamping voltage (VC) at 838 A peak impulse current. It delivers lightning and load dump protection in aerospace avionics meeting RTCA DO-160 Section 22.
For engineers reviewing the MPLAD36KP26A/TR datasheet, MPLAD36KP26A/TR pinout, MPLAD36KP26A/TR application, or MPLAD36KP26A/TR equivalent, this device is selected for high-energy surge suppression where low thermal resistance (RθJC = 1.0 °C/W), fast response (<100 ps turn-on), and AEC-Q101 qualification are required in space-constrained PCB layouts.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transient overvoltages before they damage downstream circuitry. Its metal-base PLAD package provides direct thermal path to heatsink or PCB copper, enabling sustained energy handling without thermal runaway under multi-stroke lightning events.
It is characterized for IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), RTCA/DO-160G Waveform 4 (6.4/69 μs) Level 4/5, and ESD/EFT per IEC 61000-4-2/4-4 - all validated at 25 °C with full derating above 25 °C per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W at 10/1000 μs waveform - enables single-device protection against Class 5 lightning surges per DO-160G. |
| Working Standoff Voltage (VWM) | 26 V DC - matches nominal 24 V automotive and avionics bus systems without leakage-induced false triggering. |
| Clamping Voltage (VC) | 43.0 V at 838 A - limits voltage seen by protected ICs to safe levels during worst-case transients. |
| Breakdown Voltage (VBR) | 28.9–31.9 V at 5 mA - ensures reliable conduction onset above normal operating voltage with margin. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows efficient heat transfer to external heatsink or large copper pour, critical for repetitive surge duty. |
| Standby Current (ID) | ≤10 μA at 26 V - prevents battery drain in always-on vehicle subsystems. |
| Temperature Range | –55 °C to +150 °C - supports operation in engine bay, flight control, and industrial environments. |
Pinout & Package
The MPLAD36KP26A/TR uses the PLAD surface-mount package: a rectangular, void-free thermosetting epoxy body with exposed metal cathode base (pin 1) and anode terminal on top edge. Cathode is electrically connected to the metal baseplate for low-inductance grounding and thermal conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Cathode) | High-current return path and thermal interface | Must be soldered to ≥1 in² 1 oz Cu pad with thermal vias for RθJC = 1.0 °C/W performance. |
| Top Anode Terminal | Transient current entry point | Connected to protected line (e.g., 24 V supply rail); layout must minimize trace inductance to preserve <100 ps response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge lifetime testing. |
| Low-profile PLAD package | Enables mounting directly on high-current traces without height interference in stacked-board assemblies. |
| Moisture Sensitivity Level 1 | No dry pack or baking required prior to reflow - reduces manufacturing overhead and avoids moisture-induced popcorning. |
| 3σ lot norm screening on ID | Ensures consistent standby leakage across production lots, critical for low-power always-on systems. |
| RTCA DO-160G Section 22 compliance | Validated for multi-stroke lightning immunity in aircraft power distribution units and sensor interfaces. |
Applications
| Aerospace Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC bus in aircraft auxiliary power units against induced lightning transients per DO-160G Section 22. IC Role / Device Role / Timing Role: Primary surge shunt device placed at bus entry point to divert >30 kA impulses away from upstream regulators and downstream FPGAs. Use Value: Enables single-device compliance with Level 5 pin injection (Waveform 4) and multi-stroke lightning without parallel TVS stacking. |
Use Scenario: Load dump suppression on 12 V/24 V engine control module power input during alternator field cutoff. IC Role / Device Role / Timing Role: Unidirectional clamping element absorbing 36 kW pulses within 100 ps to prevent MCU reset or CAN transceiver latch-up. Use Value: Eliminates need for external heatsink due to RθJC = 1.0 °C/W and withstands repeated 12 V load dump cycles per ISO 7637-2 Pulse 5a. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Protection of IGBT gate driver supplies in variable-frequency drives subjected to switching-induced transients. IC Role / Device Role / Timing Role: Secondary clamping device placed after bulk capacitor to suppress overshoot from regenerative braking energy reflection. Use Value: Clamps 43.0 V at 838 A while maintaining <10 μA leakage, preventing false triggering of undervoltage lockout circuits. |
Use Scenario: Surge protection on 72 V signaling lines in European railway ETCS Level 2 balise communication interfaces. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (used with external series resistor) for IEC 61000-4-5 Class 4 (42 Ω source) compliance. Use Value: Meets EN 50121-3-2 immunity requirements with no derating needed up to +105 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26A | Lower peak power (600 W), smaller SMB package, higher RθJA (110 °C/W), no AEC-Q101 or DO-160G validation. | Suitable only for low-energy ESD/EFT; cannot meet DO-160G Section 22 or ISO 7637-2 Pulse 5a. | Select SMBJ26A only for cost-sensitive consumer electronics with sub-100 A surge requirements. |
| SMCJ26A | Higher peak power (1500 W), SMC package, RθJC = 2.5 °C/W, AEC-Q101 qualified but not DO-160G tested. | Acceptable for automotive load dump where 36 kW rating is unnecessary; lacks multi-stroke lightning validation. | Choose SMCJ26A when board space permits larger SMC footprint and DO-160G compliance is not required. |
Compared with SMBJ26A and SMCJ26A, the MPLAD36KP26A/TR uniquely delivers 36 kW surge capacity in a surface-mount form with verified DO-160G Section 22 and AEC-Q101 qualification - making it the only option for aerospace primary power protection and high-reliability automotive front-end surge suppression.
Availability
MPLAD36KP26A/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive engine control units, and industrial motor drive DC bus applications requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP26A/TR 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened, high-power, and timing-critical applications.
The MPLAD36KP26A/TR belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump suppression in mission-critical systems.
FAQ
What is the maximum clamping voltage of the MPLAD36KP26A/TR under standard test conditions?
The MPLAD36KP26A/TR has a maximum clamping voltage (VC) of 43.0 V when subjected to an 838 A peak impulse current with a 10/1000 μs waveform at 25 °C. This value is measured across the device terminals during surge conduction and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the MPLAD36KP26A/TR RoHS-compliant and what does the "TR" suffix indicate?
Yes, the MPLAD36KP26A/TR is RoHS-compliant (per e3 marking), and the "TR" suffix denotes tape-and-reel packaging per EIA-481-B standard. This configuration supports automated SMT placement and ensures consistent orientation and spacing for high-volume manufacturing.
Does the MPLAD36KP26A/TR require derating at elevated temperatures, and if so, how is it applied?
Yes, the MPLAD36KP26A/TR requires thermal derating above 25 °C ambient, as shown in Figure 3 of the datasheet. At 100 °C case temperature, its steady-state power dissipation drops to 504 W (from 2.51 W at 25 °C), and peak pulse power remains 36,000 W only if junction temperature stays ≤150 °C with proper heatsinking.
How is polarity identified on the MPLAD36KP26A/TR, and what is the significance of the metal base?
The MPLAD36KP26A/TR is unidirectional, with the metal base serving as the cathode terminal. Polarity is marked by a band on the top surface aligned with the anode; the exposed metal underside must be soldered to ground or low-impedance return to ensure low-inductance surge current path and optimal thermal performance.
Can the MPLAD36KP26A/TR be used in bidirectional configurations, and what alternatives exist for bidirectional protection?
No, the MPLAD36KP26A/TR is unidirectional only (suffix "A"). For bidirectional protection at 26 V standoff, Microsemi offers the MPLAD36KP26CA/TR variant. The CA version provides symmetrical clamping for AC-coupled or floating signal lines but shares identical package, thermal, and surge ratings with the "A" version.
MPLAD36KP26A/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP26A/TR FAQ
1.How can I place an order for MPLAD36KP26A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP26A/TR 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 MPLAD36KP26A/TR reliable?
The price and inventory of MPLAD36KP26A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP26A/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP26A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP26A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP26A/TR?
MPLAD36KP26A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP26A/TR 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 MPLAD36KP26A/TR?
For technical support, including MPLAD36KP26A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP26A/TR requirements.
6.How does Aetrix verify that MPLAD36KP26A/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP26A/TR 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 MPLAD36KP26A/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP26A/TR?
All MPLAD36KP26A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP26A/TR, 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 MPLAD36KP26A/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP26A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP26A/TR Tags
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