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Microchip Technology MPLAD36KP24CA
- Part No.:
- MPLAD36KP24CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP24CA.pdf
- Description:
- TVS DIODE 24VWM 39.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,406
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Product details
Overview
MPLAD36KP24CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤39.8 V at 905 A, and features a 24 V reverse standoff voltage (VWM) with ±5% tolerance - enabling robust secondary lightning protection per IEC 61000-4-5 and RTCA DO-160F Waveform 4 Level 4.
For engineers reviewing the MPLAD36KP24CA datasheet, MPLAD36KP24CA pinout, MPLAD36KP24CA application, or MPLAD36KP24CA equivalent, key selection criteria include its bidirectional polarity, 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, 2.0 g mass, and validated compliance with AEC-Q101 and MIL-PRF-19500 screening options.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, activating when transient voltage exceeds its 24 V standoff threshold. Its silicon avalanche structure ensures sub-5 ns response time and stable breakdown at 26.7–29.5 V (V(BR) @ 5 mA), with clamping voltage tightly specified at ≤39.8 V under 905 A peak impulse current (IPP).
Designed for high-reliability mounting on FR4 PCBs with recommended pad layout, it supports multi-stroke lightning immunity (RTCA DO-160 Section 22) and meets ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and pin-injection surge standards - all while maintaining thermal stability via low RθJC and void-free UL94V-0 epoxy packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous operating voltage before clamping begins; matches 24 V nominal bus systems. |
| V(BR) min/max | 26.7–29.5 V @ 5 mA - precise breakdown range ensures predictable turn-on without premature conduction. |
| VC @ IPP | ≤39.8 V @ 905 A - limits downstream voltage stress during 10/1000 μs surges to safe levels for 3.3 V/5 V/12 V ICs. |
| PPP | 36,000 W @ 10/1000 μs - enables single-device protection against severe lightning-induced transients. |
| RθJC | 1.0 °C/W - allows efficient heat transfer to heatsink or copper plane, critical for repeated surge duty cycles. |
| Package | PLAD - surface-mount thermoset epoxy case with metal base cathode contact; UL94V-0 rated. |
| RoHS | e3 - matte-tin plating compliant with EU RoHS Directive 2011/65/EU and JEDEC J-STD-020B Level 1. |
Pinout & Package
The MPLAD36KP24CA uses a 2-terminal PLAD package with bidirectional symmetry: both terminals are electrically identical, with no anode/cathode distinction. The metal base serves as the common thermal and electrical path; polarity marking is omitted for CA-suffix devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Surge Input/Output | Connects to protected line (e.g., 24 V rail or signal pair); bidirectional conduction enables symmetrical clamping. |
| Terminal 2 | Surge Input/Output | Connects to reference plane (GND or return); metal base enhances thermal dissipation into PCB copper. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables symmetric protection of AC lines or differential buses without polarity constraints. |
| 36 kW peak pulse rating | Supports single-device compliance with RTCA DO-160F Waveform 4 Level 4 (6.4/69 μs) on 24 V systems. |
| 1.0 °C/W RθJC | Permits >70 W steady-state dissipation when mounted on 100°C heatsink, extending surge endurance. |
| AEC-Q101 qualified | Validated for automotive under-hood applications including load dump and ISO 7637-2 pulse suppression. |
| MIL-PRF-19500 upscreening | Enables high-reliability deployment in avionics with traceable wafer lots and 3σ ID screening. |
Applications
| Aerospace Power Distribution | Automotive 24 V Systems |
|---|---|
Use Scenario: Protection of 24 V DC distribution networks in commercial aircraft against lightning-induced surges per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS placed at bus entry points to clamp transients before reaching flight control modules or sensors. Use Value: Achieves Level 4 pin-injection immunity (Waveform 4) without derating - verified for 24 V VWM variants up to MPLAD36KP300CA. | Use Scenario: Load dump suppression in heavy-duty truck ECUs where alternator regulation failure generates 120 V spikes. IC Role / Device Role / Timing Role: Primary clamping element across battery feed lines, absorbing 36 kW pulses with <5 ns response. Use Value: Meets AEC-Q101 stress requirements and replaces multiple lower-power TVS arrays with single-component reliability. |
| Industrial Motor Drives | Railway Signaling Interfaces |
Use Scenario: Surge protection on 24 V control inputs of variable-frequency drives exposed to switching transients from IGBT commutation. IC Role / Device Role / Timing Role: Parallel-connected TVS limiting induced RFI and EFT bursts per IEC 61000-4-4 to <40 V. Use Value: Withstands 905 A peak current without degradation, ensuring long-term immunity in repetitive industrial environments. | Use Scenario: Secondary lightning protection for 24 V signaling lines in European railway interlocking systems compliant with EN 50121-4. IC Role / Device Role / Timing Role: IEC 61000-4-5 Class 3 protector with 42 Ω source impedance, installed at trackside cabinet entries. Use Value: Validated for MPLAD36KP24CA in 42 Ω configurations - clamps to ≤39.8 V while surviving multi-stroke 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 | 600 W PPP rating, SMC package, 1.5x higher RθJA (30 °C/W), same VWM/V(BR) tolerance. | Limited to single-stroke events; unsuitable for RTCA DO-160 multi-stroke or IEC 61000-4-5 Class 4/5. | Select SMBJ24CA only for cost-sensitive, low-energy consumer applications with infrequent surges. |
| SMCJ24CA | 1500 W PPP, SMC package, RθJC ≈ 2.5 °C/W, 3x lower peak current (125 A) than MPLAD36KP24CA. | Meets basic IEC 61000-4-5 Class 2 but lacks validation for DO-160F Waveform 4 Level 4 or long-distance lightning. | Choose SMCJ24CA for space-constrained industrial controls where 36 kW capability is unnecessary. |
Compared with SMBJ24CA and SMCJ24CA, the MPLAD36KP24CA provides 24× and 24× higher peak pulse power respectively, enabling certified multi-stroke lightning protection in aerospace and rail - with superior thermal management and AEC-Q101/MIL-PRF-19500 qualification support.
Availability
MPLAD36KP24CA is available at Aetrix Electronics and suitable for aerospace power distribution, automotive 24 V systems, and industrial motor drives requiring stable component supply across extended production lifecycles.
Supply support for MPLAD36KP24CA 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) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets.
The MPLAD36KP24CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical platforms where multi-stroke endurance and thermal stability are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP24CA at its rated peak pulse current?
The MPLAD36KP24CA has a maximum clamping voltage (VC) of 39.8 V at its rated peak pulse current (IPP) of 905 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in RF01216 Rev B and ensures downstream 24 V system components remain within safe overvoltage margins during surge events. The MPLAD36KP24CA maintains this clamping performance across its full operating temperature range (-55°C to +150°C).
Is MPLAD36KP24CA suitable for automotive load dump protection per ISO 7637-2?
Yes, the MPLAD36KP24CA is AEC-Q101 qualified and validated for automotive load dump protection. Its 36 kW peak pulse power rating and 905 A IPP capability exceed ISO 7637-2 Pulse 5a/b requirements for 24 V systems. The MPLAD36KP24CA's 1.0 °C/W RθJC and void-free epoxy package ensure thermal survivability during repeated load dump events - confirmed in Microsemi's application testing per RF01216.
Does MPLAD36KP24CA require a heatsink for standard operation?
No external heatsink is required for single-event surge suppression, as the MPLAD36KP24CA dissipates energy transiently. However, for applications with high repetition rates (>0.05% duty factor), thermal management via PCB copper area or optional heatsink is recommended to maintain junction temperature below 150°C. The MPLAD36KP24CA's RθJC of 1.0 °C/W enables direct conduction from die to metal base, making it compatible with standard FR4 pad layouts per the datasheet's recommended footprint.
How does the CA suffix affect the electrical behavior of MPLAD36KP24CA?
The CA suffix on MPLAD36KP24CA denotes bidirectional construction, meaning the device clamps symmetrically for both positive and negative transients - unlike unidirectional variants (e.g., MPLAD36KP24A) that conduct only in reverse bias. This makes the MPLAD36KP24CA ideal for AC-coupled lines, differential buses, or any application where polarity reversal cannot be guaranteed. No polarity marking appears on the package body.
Can MPLAD36KP24CA be used in RTCA DO-160F Section 22 lightning testing?
Yes, the MPLAD36KP24CA is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. Per RF01216 Rev B, it achieves Level 4 immunity for Waveform 4 (6.4/69 μs) on 24 V systems and supports long-distance Class 5 lightning protection per IEC 61000-4-5. The MPLAD36KP24CA's low thermal resistance and high-energy absorption make it suitable for aircraft power distribution and avionics interface protection where certification evidence is required.
MPLAD36KP24CA 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):
- 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:
- 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
MPLAD36KP24CA FAQ
1.How can I place an order for MPLAD36KP24CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP24CA 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 reliable?
The price and inventory of MPLAD36KP24CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP24CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP24CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP24CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP24CA?
MPLAD36KP24CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP24CA 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?
For technical support, including MPLAD36KP24CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP24CA requirements.
6.How does Aetrix verify that MPLAD36KP24CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP24CA 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 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP24CA?
All MPLAD36KP24CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP24CA, 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 part is unused and in its original packaging.
Return procedure for MPLAD36KP24CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP24CA Tags
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