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Microchip Technology MPLAD36KP90AE3
- Part No.:
- MPLAD36KP90AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP90AE3.pdf
- Description:
- TVS DIODE 90VWM 146VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,966
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Product details
Overview
MPLAD36KP90AE3 from Microsemi is a unidirectional 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 at ≤146 V under 247 A peak impulse current, and features a 90 V reverse standoff voltage (VWM) with 100–111 V breakdown range (V(BR)). Its low-profile thermoset epoxy package enables robust lightning protection per RTCA DO-160 Section 22 and secondary IEC 61000-4-5 Class 5 compliance.
For engineers reviewing the MPLAD36KP90AE3 datasheet, MPLAD36KP90AE3 pinout, MPLAD36KP90AE3 application, or MPLAD36KP90AE3 equivalent, this device is selected for high-reliability DC bus protection where multi-stroke lightning immunity, low thermal resistance (RθJC = 1.0 °C/W), and RoHS-compliant surface-mount integration are critical design requirements.
Technical Context
This TVS operates as a clamping-type overvoltage protector, triggered when transient voltage exceeds its 90 V standoff threshold. It exhibits fast response (<100 ps rise time to clamping), low junction-to-case thermal resistance (1.0 °C/W), and stable breakdown voltage with +109 mV/°C temperature coefficient - enabling predictable performance across -55°C to +150°C operating range.
Rated for 36,000 W peak pulse power under standardized 10/1000 μs waveform, it sustains repeated surges at ≤0.05% duty factor on FR4 PCB with recommended pad layout. Its metal-base cathode construction provides direct thermal path to heatsink, supporting steady-state dissipation up to 71 W at TC = 100°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - supports multi-stroke lightning events without degradation |
| Reverse Standoff Voltage (VWM) | 90 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 100–111 V @ 5 mA - defines precise conduction onset for accurate system-level margining |
| Max Clamping Voltage (VC) | 146 V @ 247 A - limits downstream component stress during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper or external heatsink |
| Operating Temperature Range | -55°C to +150°C - qualified for under-hood automotive and avionics environments |
| RoHS Compliance | e3 marking - lead-free matte-tin plating compatible with standard reflow profiles |
Pinout & Package
Package: PLAD (Plastic Leaded Anode Down) - void-free UL94V-0 thermosetting epoxy body with metal base cathode terminal; dimensions 12.32 × 10.54 × 5.08 mm (L × W × H); weight ~1.7–2.0 g; polarity marked on unidirectional variants with cathode on metal base (bottom side).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface Pad) | Transient Current Entry Point | Connects to protected line; current flows into device during positive transients |
| Cathode (Metal Base) | Transient Current Return Path | Direct thermal and electrical interface to PCB ground plane or heatsink; lowest-inductance return path |
Key Features
| Feature | Design Value |
|---|---|
| High-Power Surge Handling | 36 kW PPP rating validated per IEC 61000-4-5 and RTCA DO-160F Waveform 4/5A |
| Low Thermal Resistance | RθJC = 1.0 °C/W enables >70 W steady-state dissipation at 100°C case temperature |
| Traceable High-Reliability Screening | MIL-PRF-19500 upscreening options available; wafer and assembly lot traceability included |
| ESD & EFT Immunity | Compliant with IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) up to Level 4 |
| Moisture Sensitivity | IPC/JEDEC J-STD-020B Level 1 - no dry pack required prior to assembly |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC distribution bus in commercial aircraft avionics bays exposed to lightning-induced transients per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary clamping TVS placed at bus entry point to limit voltage excursion during multi-stroke lightning events. Use Value: Enables compliance with DO-160F Waveform 4 (6.4/69 μs) Level 5 up to 90 V system voltage without derating. |
Use Scenario: 12 V/24 V alternator output line in heavy-duty trucks subjected to ISO 7637-2 Load Dump pulses (up to 120 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional TVS absorbing energy from alternator field coil collapse, protecting downstream ECUs and sensors. Use Value: Clamps peak voltage to ≤146 V while sustaining 247 A impulse current - prevents latch-up or burnout in 5 V/3.3 V logic rails. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: DC link between rectifier and inverter in 3-phase motor drives exposed to switching transients and induced RFI. IC Role / Device Role / Timing Role: Fast-response TVS suppressing dV/dt spikes from IGBT commutation, placed adjacent to bus capacitor. Use Value: Sub-100 ps response ensures clamping activation before sensitive gate drivers experience overvoltage stress. |
Use Scenario: 72 V signaling lines in European railway signaling cabinets subject to IEC 61000-4-5 Class 4 surges (4 kV, 2 Ω source impedance). IC Role / Device Role / Timing Role: Secondary protection device downstream of primary gas discharge tube, handling residual energy. Use Value: Supports Class 4 compliance at 90 V VWM with 146 V VC - maintains signal integrity while meeting EN 50121-4 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A | Lower PPP (600 W), SMA package, RθJA = 110 °C/W, no MIL screening option | Suitable for consumer-grade single-stroke surge protection; insufficient for DO-160 multi-stroke or automotive load dump | Select only for cost-sensitive, non-safety-critical 90 V circuits with <100 A surge exposure |
| SMCJ90A | Higher PPP (1500 W), SMC package, RθJC ≈ 2.5 °C/W, AEC-Q101 qualified but not DO-160 tested | Valid for ISO 7637-2 load dump in passenger vehicles; lacks RTCA DO-160F Waveform 4/5A validation | Prefer for automotive OEMs requiring AEC-Q101 and moderate surge energy - not for aviation or rail |
Compared with SMBJ90A and SMCJ90A, the MPLAD36KP90AE3 delivers 24× higher peak power, 2.5× lower thermal resistance, and certified DO-160F/IEC 61000-4-5 compliance - making it the only viable choice for aerospace-grade multi-stroke lightning protection at 90 V standoff.
Availability
MPLAD36KP90AE3 is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MPLAD36KP90AE3 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 - with emphasis on radiation-hardened, high-voltage, and surge-immune components.
The MPLAD36KP90AE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for mission-critical lightning and load-dump protection where multi-stroke endurance, thermal stability, and regulatory certification are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP90AE3 at its rated peak pulse current?
The MPLAD36KP90AE3 has a maximum clamping voltage (VC) of 146 V at 247 A peak pulse current (IPP), measured under the standard 10/1000 μs waveform. This value ensures downstream circuitry remains within safe operating voltage limits during worst-case transients. The clamping behavior is verified across the full -55°C to +150°C junction temperature range, and the MPLAD36KP90AE3 maintains this specification without derating at 25°C ambient.
Is MPLAD36KP90AE3 suitable for RTCA DO-160F Section 22 lightning testing?
Yes, the MPLAD36KP90AE3 is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning protection, including Waveform 4 (6.4/69 μs) Level 4 and Level 5 compliance up to 90 V system voltage. Its 36 kW peak pulse power rating and low thermal resistance enable reliable performance across repeated strokes - a requirement not met by standard TVS diodes. The MPLAD36KP90AE3 data sheet cites this qualification directly in the Applications section.
How is polarity configured on MPLAD36KP90AE3, and how does it affect PCB layout?
The MPLAD36KP90AE3 is unidirectional, with the cathode located on the metal base (bottom surface) and the anode on the top-side solder pad. This configuration requires the metal base to be soldered directly to a large copper pour or heatsink acting as the system ground reference. PCB layout must provide low-inductance grounding via multiple thermal vias under the base, and the anode pad must connect to the protected line - incorrect orientation will prevent proper clamping. Polarity is not marked on the body but defined by mechanical construction.
Does MPLAD36KP90AE3 meet AEC-Q101 requirements for automotive use?
Yes, the MPLAD36KP90AE3 is tested and qualified to AEC-Q101 standards for discrete semiconductors, covering stress tests such as HTGB, HTRB, and temperature cycling. Its 90 V VWM and 146 V clamping voltage make it suitable for 24 V commercial vehicle load dump protection (ISO 7637-2 Pulse 5a/b), and its -55°C to +150°C operating range supports under-hood deployment. The MPLAD36KP90AE3 datasheet confirms AEC-Q101 compliance in the "High-Reliability" section.
What is the thermal resistance from junction to ambient (RθJA) for MPLAD36KP90AE3?
The MPLAD36KP90AE3 has a junction-to-ambient thermal resistance (RθJA) of 50 °C/W when mounted on an FR4 PCB using the recommended pad layout per the datasheet. However, its junction-to-case (RθJC) resistance is only 1.0 °C/W - meaning effective thermal performance depends heavily on PCB copper area and heatsinking beneath the metal base. For high-reliability applications, thermal design must prioritize case-to-heatsink conduction rather than relying on RθJA alone. The MPLAD36KP90AE3 achieves 71 W steady-state dissipation at TC = 100°C.
MPLAD36KP90AE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 247A
- 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
MPLAD36KP90AE3 FAQ
1.How can I place an order for MPLAD36KP90AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP90AE3 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 MPLAD36KP90AE3 reliable?
The price and inventory of MPLAD36KP90AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP90AE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP90AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP90AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP90AE3?
MPLAD36KP90AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP90AE3 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 MPLAD36KP90AE3?
For technical support, including MPLAD36KP90AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP90AE3 requirements.
6.How does Aetrix verify that MPLAD36KP90AE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP90AE3 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 MPLAD36KP90AE3 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP90AE3?
All MPLAD36KP90AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP90AE3, 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 MPLAD36KP90AE3 part is unused and in its original packaging.
Return procedure for MPLAD36KP90AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP90AE3 Tags
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