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Microchip Technology MPLAD36KP170CAE3/TR
- Part No.:
- MPLAD36KP170CAE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP170CAE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:5,163
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Product details
Overview
MPLAD36KP170CAE3/TR from Microchip (formerly 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 36,000 W peak pulse power at 10/1000 μs, clamps transients to ≤275 V at 131 A, and features a 170 V working standoff voltage (VWM) with ±5% tolerance. Its low thermal resistance (RθJC = 1.0 °C/W) enables robust multi-stroke lightning protection per RTCA DO-160 Section 22.
For engineers reviewing the MPLAD36KP170CAE3/TR datasheet, MPLAD36KP170CAE3/TR pinout, MPLAD36KP170CAE3/TR application, or MPLAD36KP170CAE3/TR equivalent, this device is selected for high-reliability DC bus protection where bidirectional clamping, AEC-Q101 qualification, and IEC 61000-4-5 Class 4/5 compliance are required - especially in avionics power distribution units and 24/48 V vehicle systems.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp voltage surges above its 170 V working standoff level. Its bidirectional construction (CA suffix) provides symmetrical clamping for AC-coupled or floating-rail applications without polarity sensitivity. The PLAD package integrates a metal baseplate for direct thermal coupling to heatsinks or PCB copper planes.
It meets RTCA DO-160G Waveform 4 (6.4/69 μs) Level 4/5 and Waveform 5A (40/120 μs) Level 4 up to 300 V devices, with clamping response time <5 ns. Thermal derating is defined from –55 °C to +150 °C junction temperature, with steady-state dissipation of 504 W at TC = 100 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous DC or repetitive peak voltage the device blocks without conduction. |
| VBR @ IBR | 189–209 V @ 5 mA - Breakdown voltage range defining reliable avalanche initiation threshold. |
| VC @ IPP | 275 V @ 131 A - Clamped voltage during 10/1000 μs surge, limiting downstream component stress. |
| IPP | 131 A - Peak impulse current capability at rated waveform, directly supporting IEC 61000-4-5 Class 4/5 testing. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance enabling high-power dissipation with minimal temperature rise under heatsink mounting. |
| Package | PLAD - Surface-mount thermoset epoxy package with metal baseplate for low-inductance, high-current routing and thermal conduction. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance. |
Pinout & Package
The PLAD package is a 2-terminal surface-mount device with no internal leads; the cathode (for unidirectional variants) is the metal baseplate. For bidirectional MPLAD36KP170CAE3/TR, both terminals are electrically symmetrical - polarity is not applicable. Mounting requires thermal pad connection to PCB copper pour or external heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (symmetrical) | One end of the bidirectional avalanche junction; connects to protected line or rail. |
| Terminal 2 | Anode/Cathode (symmetrical) | Other end of the bidirectional avalanche junction; connects to reference (e.g., ground or return path). |
| Metal Baseplate | Thermal & Electrical Reference Plane | Provides low-resistance thermal path to PCB/heatsink and serves as low-inductance current return path during surge events. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection on AC lines or floating DC buses without polarity constraints - eliminates orientation errors during assembly. |
| 36 kW peak pulse rating | Supports multi-stroke lightning transients per RTCA DO-160 Section 22 without degradation, critical for aircraft power converters. |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal, mechanical, and electrical stress profiles - suitable for 12/24/48 V vehicle ECUs. |
| RoHS-compliant (e3) | Meets global environmental compliance requirements with matte-tin plating and halogen-free epoxy body (UL94V-0). |
| Level 1 moisture sensitivity | Eliminates dry-pack requirement and floor-life restrictions - simplifies SMT handling and reduces manufacturing overhead. |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting 28 V DC distribution panels in commercial aircraft against induced lightning transients per RTCA DO-160G Section 22 Waveform 4 and 5A. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed across main bus and chassis ground to limit surge voltage to <300 V. Use Value: Enables compliance with Level 4/5 pin-injection tests up to 300 V standoff, reducing need for secondary filtering stages. | Use Scenario: Safeguarding engine control unit (ECU) power inputs during alternator load dump events in 12 V/24 V vehicles. IC Role / Device Role / Timing Role: Primary surge suppression device mounted at ECU connector interface to absorb ISO 7637-2 Pulse 5a/b energy. Use Value: Clamps 131 A surges to ≤275 V within <5 ns, preventing damage to downstream DC-DC converters and microcontrollers. |
| Industrial DC Bus Protection | Renewable Energy Inverter Inputs |
Use Scenario: Securing 400 V DC link inputs in factory automation drives exposed to switching transients from nearby contactors or VFDs. IC Role / Device Role / Timing Role: High-power TVS connected between DC+ and DC− rails to suppress common-mode and differential-mode surges. Use Value: Withstands repeated 36 kW pulses without parameter shift, extending system uptime in harsh electromagnetic environments. | Use Scenario: Protecting photovoltaic string combiner box inputs against induced surges from nearby lightning strikes in solar farms. IC Role / Device Role / Timing Role: Secondary lightning protection device installed upstream of MPPT controllers per IEC 61000-4-5 with 42 Ω source impedance. Use Value: Rated for Class 4/5 protection up to 170 V working voltage, allowing direct integration into 1000 V PV system 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 |
|---|---|---|---|
| SMBJ170CA | 600 W rating, SMB package, 10× lower peak power (vs. 36 kW), higher RθJA (65 °C/W). | Only suitable for low-energy ESD/EFT; cannot meet DO-160 Section 22 or IEC 61000-4-5 Class 4/5. | Select when cost and board space constrain design and surge energy is limited to <100 J. |
| SMCJ170CA | 1500 W rating, SMC package, 24× lower peak power, RθJC = 2.5 °C/W (vs. 1.0 °C/W). | Acceptable for automotive load dump only in low-duty-cycle systems; insufficient for multi-stroke lightning. | Choose for legacy designs requiring SMC footprint compatibility and moderate surge immunity. |
Compared with SMBJ170CA and SMCJ170CA, the MPLAD36KP170CAE3/TR delivers 60× and 24× higher peak pulse power respectively, with superior thermal management enabling sustained multi-event operation in mission-critical aerospace and heavy-duty industrial systems.
Availability
MPLAD36KP170CAE3/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive ECU protection, and industrial DC bus applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for MPLAD36KP170CAE3/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
Microchip Technology (via acquisition of Microsemi) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and power management solutions for aerospace, defense, and industrial markets.
The MPLAD36KP170CAE3/TR belongs to Microchip's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning and load-dump protection in safety-critical systems where thermal robustness and AEC-Q101 or DO-160 compliance are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP170CAE3/TR at its rated peak pulse current?
The MPLAD36KP170CAE3/TR has a maximum clamping voltage (VC) of 275 V when subjected to its rated peak pulse current (IPP) of 131 A under the standard 10/1000 μs waveform. This value is measured per test conditions in the official Microchip datasheet Revision B and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Is MPLAD36KP170CAE3/TR suitable for automotive applications?
Yes, MPLAD36KP170CAE3/TR is AEC-Q101 qualified and explicitly rated for automotive load dump protection per ISO 7637-2 Pulse 5a/b. Its 170 V working standoff voltage, 275 V clamping, and 131 A surge capability make it appropriate for protecting 24 V and 48 V vehicle ECUs, battery management systems, and ADAS power supplies against high-energy transients.
Does MPLAD36KP170CAE3/TR require special PCB layout considerations?
Yes - the PLAD package relies on its metal baseplate for thermal and electrical performance. Designers must use a large, thermally robust copper pour connected to the baseplate, follow the recommended pad layout from Figure 7 of the datasheet, and avoid thermal relief on mounting pads. Minimum 1 oz copper and strategic via stitching beneath the baseplate are strongly advised to maintain RθJC = 1.0 °C/W.
What does the "CA" suffix indicate in MPLAD36KP170CAE3/TR?
"CA" denotes bidirectional construction: the MPLAD36KP170CAE3/TR contains two opposing avalanche junctions, enabling symmetrical clamping for AC signals or floating DC rails. Unlike unidirectional "A" variants, it has no anode/cathode distinction - both terminals behave identically, eliminating polarity-dependent installation errors.
How does MPLAD36KP170CAE3/TR comply with RTCA DO-160 Section 22?
MPLAD36KP170CAE3/TR is validated for RTCA DO-160G Section 22 lightning-induced transient susceptibility testing, specifically Waveform 4 (6.4/69 μs) Level 4/5 and Waveform 5A (40/120 μs) Level 4. Its 36 kW rating, <5 ns response, and thermal robustness allow it to withstand multiple strokes without parameter drift - a key requirement for aircraft power electronics certification.
MPLAD36KP170CAE3/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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 170V
- Voltage - Breakdown (Min):
- 189V
- Voltage - Clamping (Max) @ Ipp:
- 275V
- Current - Peak Pulse (10/1000µs):
- 131A
- 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
MPLAD36KP170CAE3/TR FAQ
1.How can I place an order for MPLAD36KP170CAE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP170CAE3/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 MPLAD36KP170CAE3/TR reliable?
The price and inventory of MPLAD36KP170CAE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP170CAE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP170CAE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP170CAE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP170CAE3/TR?
MPLAD36KP170CAE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP170CAE3/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 MPLAD36KP170CAE3/TR?
For technical support, including MPLAD36KP170CAE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP170CAE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP170CAE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP170CAE3/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 MPLAD36KP170CAE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP170CAE3/TR?
All MPLAD36KP170CAE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP170CAE3/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 MPLAD36KP170CAE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP170CAE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP170CAE3/TR Tags
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