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Microchip Technology MPLAD36KP24CA/TR
- Part No.:
- MPLAD36KP24CA/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP24CA/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:8,746
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Product details
Overview
MPLAD36KP24CA/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 ≤39.8 V at 905 A, and features a 24 V working standoff voltage (VWM) with <5 ns response time. It is AEC-Q101 qualified and certified for RTCA DO-160 Section 22 multi-stroke lightning protection.
For engineers reviewing the MPLAD36KP24CA/TR datasheet, MPLAD36KP24CA/TR pinout, MPLAD36KP24CA/TR application, or MPLAD36KP24CA/TR equivalent, key selection criteria include bidirectional polarity, low thermal resistance (RθJC = 1.0 °C/W), IEC 61000-4-5 Class 5 compliance at 42 Ω source impedance, and compatibility with FR4 PCBs using the specified PLAD pad layout.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp fast-rising transients-such as load dump, EFT, and lightning-induced surges-before downstream circuitry sustains damage. Its bidirectional construction enables symmetric clamping for AC-coupled or floating signal/power lines, and its metal-base cathode design minimizes junction-to-case thermal resistance.
The device meets RTCA DO-160G Waveform 4 (6.4/69 μs) Level 4–5 and Waveform 5A (40/120 μs) Level 4–5 pin-injection requirements, and supports secondary lightning protection per IEC 61000-4-5 across multiple source impedances (2 Ω, 12 Ω, 42 Ω) depending on class and distance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous DC or repetitive peak reverse voltage the device blocks without conduction. |
| VBR (min–max) | 26.7–29.5 V at 5 mA - Ensures reliable avalanche initiation above system operating voltage with margin. |
| VC @ IPP | 39.8 V at 905 A - Clamping voltage during full-rated 10/1000 μs surge; defines maximum stress on protected ICs. |
| IPP | 905 A - Peak impulse current capability; determines survivability against high-energy transients like load dump. |
| RθJC | 1.0 °C/W - Enables efficient heat transfer to heatsink or copper plane, critical for repeated surge duty cycles. |
| TJ range | –55 to +150 °C - Supports operation in under-hood automotive and avionics environments without derating. |
| αV(BR) | 22 mV/°C - Predictable temperature drift of breakdown voltage aids stable clamping across thermal extremes. |
Pinout & Package
The MPLAD36KP24CA/TR uses the PLAD (Power Leadless Array Device) package: a low-profile, thermally enhanced surface-mount outline with a metal base acting as the cathode terminal. The body is void-free UL94V-0 epoxy; terminals feature RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode (K) | Primary heat path and electrical return; must be soldered to large copper area or heatsink for thermal performance. |
| Top Surface Pad | Anode (A) | Signal/power input node; connects to line being protected; polarity marking visible on top surface. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Enables symmetrical clamping for AC lines, differential buses, or floating systems without polarity constraints. |
| 36 kW peak pulse power (10/1000 μs) | Supports robust protection against severe automotive load dump and aircraft lightning-induced transients. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain and chassis applications under temperature cycling, humidity, and surge stress. |
| RθJC = 1.0 °C/W | Allows >5× higher steady-state power dissipation at TC = 100 °C vs. standard SMD TVS devices, enabling compact thermal design. |
| RTCA DO-160G Section 22 compliance | Meets multi-stroke lightning test requirements for commercial and military aircraft electronics installations. |
Applications
| Aerospace Power Distribution | Automotive 12 V Battery Rail |
|---|---|
Use Scenario: Protection of avionics bus controllers and sensor interfaces against lightning-induced surges per RTCA DO-160G Waveform 4/5A. IC Role / Device Role / Timing Role: Primary transient suppression element placed at board-level entry point before DC-DC converters and interface ICs. Use Value: Achieves Level 4/5 pin-injection immunity with <5 ns response, preserving signal integrity and preventing latch-up in flight-critical circuits. |
Use Scenario: Load dump protection on 12 V battery-fed ECUs subjected to ISO 7637-2 Pulse 5a (110 V, 400 ms). IC Role / Device Role / Timing Role: High-power clamping device mounted directly at connector entry, shunting surge energy to chassis ground. Use Value: Withstands 905 A peak current and clamps to ≤39.8 V, ensuring downstream MCU and CAN transceivers remain within absolute maximum ratings. |
| Industrial Motor Drive DC Bus | Telecom Power Feeds |
Use Scenario: Surge suppression on 24–48 V DC bus lines feeding servo drives exposed to inductive switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across bus rails to absorb both positive and negative polarity switching spikes. Use Value: Symmetric clamping prevents reverse-bias overstress on bus capacitors and gate drivers during regeneration events. |
Use Scenario: Secondary protection on PoE-powered equipment inputs subjected to IEC 61000-4-5 Line-Earth surges. IC Role / Device Role / Timing Role: Final-stage TVS after primary GDT/MOV, providing precise low-clamp voltage for sensitive PHY ICs. Use Value: 39.8 V clamping at 905 A ensures Ethernet PHYs (e.g., IEEE 802.3af/at) operate safely even during worst-case 42 Ω source impedance Class 5 events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Lower peak power (600 W), smaller SMB package, RθJC ≈ 15 °C/W, VC = 38.9 V @ 15.4 A. | Suitable for lower-energy transients (IEC 61000-4-2/4-4); not rated for DO-160G or load dump. | Select when space-constrained and surge energy ≤100 J; not a drop-in replacement for MPLAD36KP24CA/TR. |
| SMCJ24CA | Higher peak power (1500 W), larger SMC package, RθJC ≈ 3.5 °C/W, VC = 38.9 V @ 38.7 A. | Valid for IEC 61000-4-5 Class 4 (42 Ω), but insufficient for DO-160G Level 5 or automotive load dump. | Use where moderate surge energy and cost sensitivity outweigh aerospace/automotive qualification needs. |
Compared with SMBJ24CA and SMCJ24CA, the MPLAD36KP24CA/TR delivers over 20× higher peak power and 3× lower thermal resistance-enabling reliable protection in mission-critical, high-reliability systems where multi-stroke lightning or 12 V load dump events are specified.
Availability
MPLAD36KP24CA/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive battery rail protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MPLAD36KP24CA/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 acquired Microsemi in 2018 and now manufactures high-reliability analog, mixed-signal, and power protection solutions for aerospace, defense, and industrial markets.
The MPLAD36KP24CA/TR belongs to Microchip's high-power PLAD TVS family, engineered specifically for demanding surge environments where standard SMD TVS devices fail-emphasizing thermal robustness, multi-stroke endurance, and aviation-grade certification.
FAQ
What is the clamping voltage of the MPLAD36KP24CA/TR at its rated peak pulse current?
The MPLAD36KP24CA/TR has a maximum clamping voltage (VC) of 39.8 V when subjected to its rated peak pulse current (IPP) of 905 A under the 10/1000 μs waveform. This value is measured across the device terminals during surge conduction and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Is the MPLAD36KP24CA/TR suitable for automotive load dump protection per ISO 7637-2?
Yes, the MPLAD36KP24CA/TR is validated for automotive load dump protection. Its 905 A peak pulse current rating and 39.8 V clamping voltage meet ISO 7637-2 Pulse 5a requirements for 12 V systems. It is also AEC-Q101 qualified, confirming reliability under automotive temperature, vibration, and surge stress conditions.
How does the PLAD package of the MPLAD36KP24CA/TR improve thermal performance compared to standard SMC or SMB packages?
The MPLAD package uses a metal base as the cathode terminal, achieving a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W-over 10× better than typical SMC (≈3.5 °C/W) or SMB (≈15 °C/W) packages. This allows the MPLAD36KP24CA/TR to dissipate surge energy more efficiently and sustain repeated transients without thermal runaway.
Does the "CA" suffix in MPLAD36KP24CA/TR indicate bidirectional functionality?
Yes, the "CA" suffix explicitly denotes bidirectional construction. The MPLAD36KP24CA/TR provides symmetrical clamping for both positive and negative polarity transients, making it suitable for AC-coupled lines, differential buses, or floating systems where polarity cannot be guaranteed-unlike unidirectional "A"-suffix variants.
Can the MPLAD36KP24CA/TR be used for RTCA DO-160G Section 22 lightning testing?
Yes, the MPLAD36KP24CA/TR is specifically designed and tested to meet RTCA DO-160G Section 22 multi-stroke lightning requirements. It achieves Level 4 and Level 5 immunity for Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs), making it suitable for primary or secondary lightning protection in commercial and military avionics.
MPLAD36KP24CA/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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 39.8V
- Current - Peak Pulse (10/1000µs):
- 905A
- 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
MPLAD36KP24CA/TR FAQ
1.How can I place an order for MPLAD36KP24CA/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP24CA/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 MPLAD36KP24CA/TR reliable?
The price and inventory of MPLAD36KP24CA/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP24CA/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP24CA/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP24CA/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP24CA/TR?
MPLAD36KP24CA/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP24CA/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 MPLAD36KP24CA/TR?
For technical support, including MPLAD36KP24CA/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP24CA/TR requirements.
6.How does Aetrix verify that MPLAD36KP24CA/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP24CA/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 MPLAD36KP24CA/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP24CA/TR?
All MPLAD36KP24CA/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP24CA/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 MPLAD36KP24CA/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP24CA/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP24CA/TR Tags
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