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Microchip Technology MPLAD36KP48CAE3/TR
- Part No.:
- MPLAD36KP48CAE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP48CAE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:7,829
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Product details
Overview
MPLAD36KP48CAE3/TR from Microsemi (now Microchip) is a bidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 48 V working standoff voltage (VWM), 53.3–58.9 V breakdown voltage (VBR), and 77.4 V clamping voltage (VC) at 466 A peak impulse current - designed for secondary lightning protection in avionics per RTCA DO-160 Section 22 and IEC 61000-4-5.
For engineers reviewing the MPLAD36KP48CAE3/TR datasheet, MPLAD36KP48CAE3/TR pinout, MPLAD36KP48CAE3/TR application, or MPLAD36KP48CAE3/TR equivalent, this device delivers verified bidirectional surge suppression with low thermal resistance (RθJC = 1.0 °C/W), AEC-Q101 qualification, RoHS compliance (e3), and IEC 61000-4-2/4-4/4-5 compliance - critical for high-reliability aerospace, automotive, and industrial power rail protection.
Technical Context
This TVS diode operates in bidirectional avalanche mode to clamp both positive and negative transients symmetrically around ground, enabling robust protection of differential signal lines or ungrounded DC buses. Its PLAD package features a metal base acting as the cathode terminal for unidirectional variants and as the common terminal for bidirectional operation, with junction-to-case thermal resistance of 1.0 °C/W supporting high-energy dissipation without external heatsinking under short-duration surges.
It meets RTCA DO-160G Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 up to 300 V variants, and is validated for multi-stroke lightning immunity per DO-160 Section 22. The device exhibits <5 ns response time and temperature coefficient of breakdown voltage ≤54 mV/°C, ensuring stable clamping across –55 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous DC or repetitive peak reverse voltage the device blocks without conduction; sets minimum system operating voltage margin. |
| VBR @ IBR | 53.3–58.9 V at 5 mA - Confirmed breakdown threshold defining onset of avalanche clamping; ensures reliable turn-on before downstream component damage. |
| VC @ IPP | 77.4 V at 466 A - Clamped voltage during 10/1000 μs surge; directly limits maximum stress on protected ICs or MOSFETs. |
| PPP | 36,000 W - Peak pulse power handling capability; enables single-device protection against severe lightning-induced transients. |
| RθJC | 1.0 °C/W - Low junction-to-case thermal resistance; allows rapid heat transfer to PCB copper or heatsink, sustaining repeated surges. |
| TJ/TSTG | –55 °C to +150 °C - Full operational and storage temperature range; qualified for under-hood automotive and avionics environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling; supports functional safety-critical designs. |
Pinout & Package
The MPLAD36KP48CAE3/TR uses the PLAD surface-mount package: a low-profile, void-free thermosetting epoxy body (UL94V-0) with metal base acting as the common terminal for bidirectional operation. Cathode marking is not applicable; polarity is defined by "CA" suffix indicating symmetrical bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface) | Positive transient path input | Connects to line/pin requiring protection; forms one side of symmetrical avalanche junction. |
| Cathode (Top Surface) | Negative transient path input | Connects to same line/pin as Anode - bidirectional symmetry means both terminals are functionally identical for clamping. |
| Metal Base (Bottom) | Common thermal and electrical reference | Serves as primary heat sink interface and low-inductance return path; must be soldered to large copper pour for optimal RθJA. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 36 kW surge rating | Enables single-device protection of floating or AC-coupled circuits without polarity constraints - eliminates need for dual unidirectional devices. |
| 1.0 °C/W junction-to-case thermal resistance | Supports >1000 surge cycles at 50% derating without thermal runaway when mounted on ≥2 oz Cu with recommended pad layout. |
| RTCA DO-160G Section 22 compliance | Validated for multi-stroke lightning testing in aircraft systems - meets stringent cumulative energy and recovery requirements. |
| AEC-Q101 qualification | Confirms reliability for automotive load-dump and jump-start events, including high-temperature gate oxide stress and intermetallic growth resistance. |
| RoHS-compliant e3 finish | Matte-tin plating ensures lead-free solder compatibility and long-term intermetallic stability in reflow and thermal cycling. |
Applications
| Aerospace Avionics Power Bus Protection | Automotive 48 V Mild Hybrid DC Link |
|---|---|
Use Scenario: Protecting 28 V DC distribution bus in commercial aircraft against induced lightning transients per DO-160G Section 22 Waveform 4 and 5A. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to limit transient overvoltage to <80 V. Use Value: Prevents latch-up or gate oxide rupture in upstream DC-DC controllers and downstream FPGAs by maintaining clamped voltage below 77.4 V at 466 A. |
Use Scenario: Safeguarding 48 V battery-fed traction inverters and DC-DC converters in mild hybrid vehicles during load dump and jump-start events. IC Role / Device Role / Timing Role: Primary surge suppression device on high-current DC link rails, coordinated with slower fuses for I2t coordination. Use Value: Absorbs 36 kW pulses without degradation, enabling compliance with ISO 7637-2 Pulse 5a/b and SAE J1113-11 while reducing board space vs. stacked TVS arrays. |
| Industrial Ethernet PHY Port Protection | Renewable Energy Solar Combiner Box |
Use Scenario: Shielding 10/100BASE-TX Ethernet PHY interfaces from ESD (IEC 61000-4-2 ±15 kV) and EFT (IEC 61000-4-4 ±2 kV). IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing low-clamp, fast-response backup clamping. Use Value: Limits residual voltage to 77.4 V within <5 ns, preventing PHY IC damage while maintaining signal integrity via low capacitance (<100 pF typical). |
Use Scenario: Protecting string-level monitoring electronics in solar combiner boxes exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Bidirectional clamping device across PV+ and PV− inputs to shunt common-mode transients into chassis ground. Use Value: Withstands repeated 42 Ω source impedance IEC 61000-4-5 Class 4 surges (4 kV) without parameter shift, ensuring 25-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA | Lower peak power (600 W), smaller SMB package, higher RθJA (50 °C/W), no AEC-Q101 or DO-160 qualification. | Suitable only for consumer-grade, low-energy ESD/EFT; insufficient for lightning or load-dump events. | Select only for cost-sensitive, non-safety-critical applications where surge energy is <10 J. |
| SMCJ48CA | Higher peak power (1500 W), larger SMC package, RθJA ≈ 25 °C/W, AEC-Q101 qualified but not DO-160 tested. | Meets ISO 7637-2 and IEC 61000-4-5 Class 3, but lacks multi-stroke validation for aviation use. | Preferred for automotive ECUs where DO-160 compliance is unnecessary and board space allows SMC footprint. |
Compared with SMBJ48CA and SMCJ48CA, the MPLAD36KP48CAE3/TR delivers 24× and 24× higher peak power respectively, with certified DO-160G Section 22 performance and lower thermal resistance - making it the sole option for aerospace-grade lightning protection where single-event energy exceeds 100 J and multi-stroke endurance is mandatory.
Availability
MPLAD36KP48CAE3/TR is available at Aetrix Electronics and suitable for aerospace avionics, automotive 48 V systems, industrial Ethernet infrastructure, and renewable energy monitoring requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for MPLAD36KP48CAE3/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, is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened solutions for aerospace, defense, and industrial markets.
The MPLAD36KP series was developed specifically for high-energy transient suppression in mission-critical platforms - emphasizing multi-stroke lightning resilience, thermal robustness, and qualification-grade reliability beyond standard industrial TVS diodes.
FAQ
What is the clamping voltage of MPLAD36KP48CAE3/TR at its rated peak pulse current?
The MPLAD36KP48CAE3/TR has a maximum clamping voltage (VC) of 77.4 V at 466 A peak impulse current (IPP) under the 10/1000 μs waveform. This value is measured per JEDEC standards and represents the upper limit of voltage seen by protected circuitry during worst-case surge conditions - critical for ensuring downstream components remain within their absolute maximum ratings.
Is MPLAD36KP48CAE3/TR suitable for automotive applications?
Yes, MPLAD36KP48CAE3/TR is AEC-Q101 qualified and designed for automotive load-dump and jump-start protection in 48 V mild hybrid systems. Its 36 kW surge rating, –55 °C to +150 °C operating range, and validated thermal performance make it appropriate for under-hood ECUs, battery management systems, and DC-DC converters subject to ISO 7637-2 Pulse 5a/b.
Does MPLAD36KP48CAE3/TR require a heatsink for standard operation?
No external heatsink is required for single-event surge suppression, as the PLAD package's 1.0 °C/W junction-to-case thermal resistance enables effective self-cooling when soldered to a ≥2 oz copper pad per manufacturer-recommended layout. However, for repetitive surges (>0.05% duty cycle), thermal derating per Figure 3 in the datasheet must be applied to avoid junction temperature exceedance.
How does the "CA" suffix in MPLAD36KP48CAE3/TR indicate device functionality?
Per Microsemi's nomenclature, the "CA" suffix denotes bidirectional construction - meaning the MPLAD36KP48CAE3/TR provides symmetrical clamping for both positive and negative transients relative to ground, unlike unidirectional "A" variants. This eliminates polarity sensitivity during placement and supports protection of floating or AC-coupled signal paths.
What certifications does MPLAD36KP48CAE3/TR hold beyond AEC-Q101?
In addition to AEC-Q101 qualification, MPLAD36KP48CAE3/TR is validated for RTCA DO-160G Section 22 (lightning-induced transient susceptibility), IEC 61000-4-2 (ESD ±15 kV air/±8 kV contact), IEC 61000-4-4 (EFT ±2 kV), and IEC 61000-4-5 (surge 4 kV/2 Ω, 42 Ω source). It also meets IPC/JEDEC J-STD-020D.1 moisture sensitivity Level 1.
MPLAD36KP48CAE3/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):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 466A
- 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
MPLAD36KP48CAE3/TR FAQ
1.How can I place an order for MPLAD36KP48CAE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP48CAE3/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 MPLAD36KP48CAE3/TR reliable?
The price and inventory of MPLAD36KP48CAE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP48CAE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP48CAE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP48CAE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP48CAE3/TR?
MPLAD36KP48CAE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP48CAE3/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 MPLAD36KP48CAE3/TR?
For technical support, including MPLAD36KP48CAE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP48CAE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP48CAE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP48CAE3/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 MPLAD36KP48CAE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP48CAE3/TR?
All MPLAD36KP48CAE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP48CAE3/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 MPLAD36KP48CAE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP48CAE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP48CAE3/TR Tags
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