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Microchip Technology MPLAD36KP48CA
- Part No.:
- MPLAD36KP48CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP48CA.pdf
- Description:
- TVS DIODE 48VWM 77.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,556
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Product details
Overview
MPLAD36KP48CA 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, features a 48 V reverse standoff voltage (VWM), clamps to ≤77.4 V at 466 A peak pulse current, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP48CA datasheet, MPLAD36KP48CA pinout, MPLAD36KP48CA application, or MPLAD36KP48CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin-injection immunity per RTCA/DO-160F Waveform 4 & 5A, and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
This TVS diode operates in bidirectional mode with symmetrical clamping behavior, enabling protection of AC-coupled or differential signal/power lines without polarity concerns. Its low thermal resistance (RθJC = 1.0 °C/W) and void-free thermosetting epoxy package support high-reliability mounting on FR4 PCBs with recommended pad layout for optimal heat dissipation.
It is surge-tested per AEC-Q101 and qualified for high-reliability screening per MIL-PRF-19500 (MX/MXL levels). The device exhibits a temperature coefficient of breakdown voltage (αV(BR)) of 54 mV/°C and maintains <10 μA standby current (ID) at 48 V VWM across -55°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous working voltage before clamping begins; matches 42 V nominal DC bus or 36 V automotive systems with margin. |
| V(BR) min/max | 53.3–58.9 V - Breakdown initiates within this range at 5 mA; ensures reliable turn-on above VWM with defined overvoltage headroom. |
| VC @ IPP | ≤77.4 V at 466 A - Clamping voltage under 10/1000 μs surge; limits downstream component stress to safe levels during lightning transients. |
| PPP | 36,000 W - Peak pulse power rating; supports single-event energy absorption up to 36 J at 1 ms duration (derated at higher repetition). |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; enables direct thermal coupling to heatsink or copper pour for sustained multi-pulse operation. |
| ID @ VWM | ≤10 μA - Ultra-low leakage at rated standoff; prevents unnecessary power loss or false triggering in high-impedance circuits. |
| αV(BR) | 54 mV/°C - Positive temperature coefficient ensures stable clamping voltage rise with junction heating, aiding parallel operation. |
Pinout & Package
Package: PLAD (Plastic Leaded Anode/Cathode) - surface-mount, low-profile void-free thermosetting epoxy case meeting UL94V-0; metal base serves as cathode terminal for unidirectional variants; bidirectional variant (CA suffix) has symmetrical terminals with no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Bidirectional construction allows equal clamping in both directions; terminals are electrically identical and interchangeable in layout. |
| Metal base (bottom side) | Thermal and electrical interface | Serves as primary heat sink path and common connection node; requires soldered thermal pad area per recommended footprint (A=0.470", B=0.230"). |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW peak pulse power | Enables single-device protection against severe lightning-induced surges (e.g., DO-160 Section 22 Level 4/5) without cascading TVS arrays. |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for pin-injection immunity up to 40/120 μs (Level 5 to 38 V) and 6.4/69 μs (Level 5 to 300 V), critical for avionics I/O protection. |
| IEC 61000-4-5 Class 5 support (42 Ω, 12 Ω, 2 Ω) | Meets highest industrial/lightning immunity classes across multiple source impedances-enables reuse across diverse system architectures. |
| AEC-Q101 qualified & MIL-PRF-19500 upscreening options | Supports automotive and aerospace deployment with traceable wafer lots, 3σ ID screening, and optional MXL reliability level. |
| Moisture sensitivity Level 1 (J-STD-020B) | Eliminates dry-pack requirement and floor-life constraints-reduces handling overhead and reflow risk in standard SMT assembly. |
Applications
| Aerospace Avionics Power Bus Protection | Automotive 48 V Mild Hybrid Systems |
|---|---|
Use Scenario: Protecting 28 V DC distribution networks in commercial aircraft against induced lightning transients per DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at power entry point to limit surge voltage to <80 V during multi-stroke events. Use Value: Enables compliance with Level 4/5 pin-injection and secondary lightning tests without derating or parallel devices. |
Use Scenario: Safeguarding 48 V battery management and DC-DC converter inputs in mild hybrid vehicles against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary surge suppression element absorbing >30 kA surge currents while maintaining <77.4 V clamping. Use Value: Replaces bulkier through-hole TVS arrays with a single surface-mount solution meeting AEC-Q101 and thermal cycling requirements. |
| Industrial Motor Drive DC Link Protection | Telecom Base Station Power Interface |
Use Scenario: Shielding 48–60 V DC link rails in variable-frequency drives from switching transients and RFI-induced surges. IC Role / Device Role / Timing Role: Fast-response (<100 ps turn-on) bidirectional clamp suppressing sub-microsecond spikes before they reach IGBT gate drivers. Use Value: Prevents false triggering and cumulative degradation of power semiconductors under repetitive 0.05% duty cycle surges. |
Use Scenario: Securing 48 V PoE++ or telecom rectifier outputs against lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), clamping residual energy to protect downstream DC-DC converters. Use Value: Achieves IEC 61000-4-5 Class 4/5 with 42 Ω source impedance-validated for long-distance telecom line protection up to 260 V VWM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ48CA | Lower PPP (400 W vs. 36,000 W); same VWM and bidirectional configuration; SMC package (larger footprint, higher RθJA = 19 °C/W). | Restricted to low-energy ESD/EFT (IEC 61000-4-2/4-4), not suitable for lightning or DO-160 waveforms. | Select only for cost-sensitive consumer-grade designs where surge energy is limited to <1 J. |
| Vishay V260CH8 | Higher VWM (260 V); same PLAD package and 36 kW rating; different αV(BR) (132 mV/°C) and clamping ratio (VC/VWM ≈ 1.6 vs. 1.61). | Targeted for 220–240 V AC-derived DC rails; not applicable for 48 V systems due to excessive VWM margin and reduced clamping precision. | Use only when protecting higher-voltage infrastructure; not a functional substitute for MPLAD36KP48CA in 48 V applications. |
Compared with SMAJ48CA and V260CH8, the MPLAD36KP48CA uniquely combines 48 V standoff, 36 kW capability, DO-160F validation, and PLAD thermal performance-making it irreplaceable for high-energy 48 V aerospace and automotive surge protection where single-device robustness and qualification rigor are mandatory.
Availability
MPLAD36KP48CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive 48 V mild hybrid systems, and industrial motor drive applications requiring stable component supply, long-term lifecycle assurance, and certified high-reliability screening.
Supply support for MPLAD36KP48CA 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, RF, timing, and power solutions for aerospace, defense, and industrial markets.
The MPLAD36KP48CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning immunity and mission-critical surge protection in harsh-environment electronics.
FAQ
What is the maximum clamping voltage of the MPLAD36KP48CA under standard test conditions?
The MPLAD36KP48CA has a maximum clamping voltage (VC) of 77.4 V at 466 A peak pulse current under the 10/1000 μs waveform. This value is measured per Figure 3 in the RF01216 datasheet and represents the upper limit of voltage seen by protected circuitry during a full-rated surge event.
Is the MPLAD36KP48CA suitable for use in automotive applications requiring AEC-Q101 qualification?
Yes, the MPLAD36KP48CA is tested and qualified to AEC-Q101 standards for stress testing of discrete semiconductors. Its construction, lot traceability, and 3σ standby current screening meet automotive reliability requirements for under-hood and powertrain applications.
Does the MPLAD36KP48CA require special PCB layout considerations for thermal management?
Yes, the MPLAD36KP48CA relies on its metal base for thermal conduction. The recommended pad layout (A = 0.470", B = 0.230") must be implemented using ≥2 oz copper with thermal vias to internal ground planes to maintain RθJC = 1.0 °C/W and prevent junction overheating during repetitive surges.
Can the MPLAD36KP48CA be used for both AC and DC line protection?
Yes, the bidirectional construction of the MPLAD36KP48CA makes it suitable for AC line protection (e.g., 32 V RMS telecom interfaces) and DC bus protection (e.g., 48 V automotive systems). Its symmetrical V-I curve ensures identical clamping in both polarities without external polarity management.
What is the moisture sensitivity level (MSL) of the MPLAD36KP48CA, and does it require dry pack handling?
The MPLAD36KP48CA is rated MSL Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and does not require dry pack storage or baking prior to reflow. This simplifies manufacturing logistics and eliminates moisture-related delamination risks during soldering.
MPLAD36KP48CA 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):
- 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:
- 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
MPLAD36KP48CA FAQ
1.How can I place an order for MPLAD36KP48CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP48CA 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 MPLAD36KP48CA reliable?
The price and inventory of MPLAD36KP48CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP48CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP48CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP48CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP48CA?
MPLAD36KP48CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP48CA 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 MPLAD36KP48CA?
For technical support, including MPLAD36KP48CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP48CA requirements.
6.How does Aetrix verify that MPLAD36KP48CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP48CA 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 MPLAD36KP48CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP48CA?
All MPLAD36KP48CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP48CA, 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 MPLAD36KP48CA part is unused and in its original packaging.
Return procedure for MPLAD36KP48CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP48CA Tags
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