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Microchip Technology MPLAD36KP90A
- Part No.:
- MPLAD36KP90A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP90A.pdf
- Description:
- TVS DIODE 90VWM 146VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,837
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Product details
Overview
MPLAD36KP90A 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, features a 90 V reverse standoff voltage (VWM), clamps transients to ≤146 V at 247 A peak current, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP90A datasheet, MPLAD36KP90A pinout, MPLAD36KP90A application, or MPLAD36KP90A equivalent, this device is selected for high-reliability secondary lightning protection, load dump suppression, and ESD/EFT hardening where low thermal resistance, RoHS-compliant packaging, and AEC-Q101 qualification are required.
Technical Context
The MPLAD36KP90A operates as a silicon avalanche diode with controlled breakdown behavior, optimized for fast response (<100 ps) and stable clamping under repetitive surges. Its metal-base package enables direct thermal coupling to PCB copper, achieving 1.0 °C/W junction-to-case thermal resistance and supporting sustained operation up to +150 °C junction temperature.
It complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (lightning) when configured with 42 Ω, 12 Ω, or 2 Ω source impedances - validated for Class 1–5 performance depending on VWM and distance criteria. Pin injection testing per RTCA/DO-160F Waveform 4 confirms Level 4 protection up to 90 V standoff.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 90 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (VBR) | 100–111 V @ 5 mA - ensures reliable turn-on margin above VWM |
| Max Clamping Voltage (VC) | 146 V @ 247 A - limits downstream voltage stress during worst-case surge |
| Standby Current (ID) | 10 μA @ 90 V - negligible leakage in standby, preserving system efficiency |
| Thermal Resistance (RθJC) | 1.0 °C/W - enables effective heat transfer to heatsink or copper pour |
| Junction Temperature Range | −55 °C to +150 °C - supports operation in extreme environmental conditions |
Pinout & Package
Package: PLAD (Plastic Leaded Anode Down) - void-free UL94V-0 epoxy body with metal base cathode termination; dimensions 12.32 × 10.54 × 5.08 mm (L × W × H); weight ~1.85 g; RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface Pad) | Current Entry Terminal | Soldered to PCB trace; carries surge current into device during clamping |
| Cathode (Metal Base) | Current Exit Terminal / Thermal Path | Directly contacts PCB copper or heatsink; serves as primary thermal conduction path and circuit return |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT construction | Enables integration into space-constrained avionics and engine control modules without height clearance issues |
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring robustness against thermal cycling and mechanical shock |
| RTCA DO-160F Waveform 4 Level 4 compliance | Guarantees survivability against 6.4/69 μs pin-injected transients in flight-critical systems |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to reflow, reducing manufacturing cost and risk of popcorning |
| 3σ lot norm screening on ID | Ensures consistent low-leakage performance across production lots for mission-critical standby integrity |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power inputs in flight management computers subjected to lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient clamp on main power rail, absorbing multi-stroke energy without degradation. Use Value: Enables compliance with FAA airworthiness requirements while maintaining <10 μA leakage to avoid battery drain during ground idle. | Use Scenario: Load dump suppression on 12 V battery-fed ECU power supplies during alternator regulation failure. IC Role / Device Role / Timing Role: Fast-acting shunt protector that clamps voltage to <146 V within 100 ps to prevent microcontroller latch-up. Use Value: Prevents field returns due to semiconductor damage during ISO 7637-2 Pulse 5a events, extending ECU service life. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Secondary surge protection on 90 V DC bus lines feeding servo drives exposed to switching transients and induced RFI. IC Role / Device Role / Timing Role: High-power crowbar element placed after upstream MOVs to handle residual energy and extend system MTBF. Use Value: Delivers 36 kW pulse handling with 1.0 °C/W thermal resistance, enabling compact heatsink-less layout on dense drive PCBs. | Use Scenario: ESD and EFT hardening of 90 V signaling lines in track-side interlocking systems compliant with EN 50121-4. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; unidirectional MPLAD36KP90A protects positive-rail interfaces with precise 90 V threshold. Use Value: Meets IEC 61000-4-2 Level 4 (15 kV air/8 kV contact) and IEC 61000-4-4 Level 4 (4 kV) without derating. |
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 SP3050-090 | Lower PPP (3,000 W), smaller SMC package, 90 V VWM, 146 V VC @ 20 A | Targeted at consumer/industrial boards; lacks DO-160F, AEC-Q101, or MIL-PRF-19500 screening | Select when cost and board space outweigh aerospace/automotive qualification needs |
| Vishay SMAJ90A | Same 90 V VWM, but only 400 W PPP, SMA package, 156 V VC @ 25.6 A, no thermal base | Suitable for low-energy ESD/EFT; cannot meet DO-160 Section 22 or load dump standards | Choose for non-safety-critical signal-line protection where peak power demand is <500 W |
Compared with SP3050-090 and SMAJ90A, the MPLAD36KP90A provides 9× higher pulse power handling, integrated thermal path via metal base, and full aerospace/automotive qualification - making it the sole option for certified high-energy surge environments.
Availability
MPLAD36KP90A is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain systems, and industrial motor drives requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MPLAD36KP90A 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) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened ICs for aerospace, defense, and industrial markets.
The MPLAD36KP90A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for certified lightning and load dump protection in safety-critical platforms where thermal performance and qualification rigor are mandatory.
FAQ
What is the clamping voltage of the MPLAD36KP90A at its rated peak pulse current?
The MPLAD36KP90A has a maximum clamping voltage (VC) of 146 V at 247 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and defines the upper voltage limit imposed on protected circuits during worst-case surge events. The MPLAD36KP90A maintains this clamping performance across its full operating temperature range when mounted per recommended pad layout.
Is the MPLAD36KP90A suitable for bidirectional surge protection?
No, the MPLAD36KP90A is a unidirectional TVS diode - its cathode is the metal base, and it conducts only during reverse-biased overvoltage events. For bidirectional protection at 90 V standoff, the correct part is MPLAD36KP90CA. Using MPLAD36KP90A in AC or bipolar signal paths will result in forward conduction and potential failure. Always verify polarity marking and circuit topology before placement.
Does the MPLAD36KP90A require a heatsink for continuous operation?
The MPLAD36KP90A does not require an external heatsink for single-pulse or low-duty-cycle surge events, as its 1.0 °C/W junction-to-case thermal resistance allows efficient heat dissipation into PCB copper. However, for repeated surges above 0.05% duty factor or steady-state power >2.5 W, thermal design must include adequate copper area (per pad layout spec) or optional heatsink attachment to the metal base to maintain TJ ≤150 °C.
What qualifications does the MPLAD36KP90A hold for automotive use?
The MPLAD36KP90A is qualified to AEC-Q101 for stress testing including temperature cycling, mechanical shock, and humidity bias. It is also screened to MIL-PRF-19500 (levels M, MA, MX, MXL) upon request. These qualifications validate its suitability for under-hood automotive applications such as engine control units and transmission control modules where reliability under thermal and vibration stress is critical. The MPLAD36KP90A data sheet explicitly states AEC-Q101 compliance in the "High-Reliability" section.
How does the MPLAD36KP90A perform under RTCA DO-160F lightning test Waveform 4?
The MPLAD36KP90A achieves Level 4 protection per RTCA DO-160F Section 22 Waveform 4 (6.4/69 μs, 25 °C), meaning it withstands pin-injected surges up to 90 V standoff without degradation. This rating is confirmed in the "Pin injection protection" table of the RF01216 datasheet. Performance is temperature-dependent: MicroNote 132 specifies derating above 25 °C, so system-level validation must account for ambient and self-heating effects on clamping consistency.
MPLAD36KP90A 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
MPLAD36KP90A FAQ
1.How can I place an order for MPLAD36KP90A through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP90A 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 MPLAD36KP90A reliable?
The price and inventory of MPLAD36KP90A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP90A is usually 5 days.
3.What payment methods are accepted for MPLAD36KP90A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP90A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP90A?
MPLAD36KP90A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP90A 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 MPLAD36KP90A?
For technical support, including MPLAD36KP90A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP90A requirements.
6.How does Aetrix verify that MPLAD36KP90A is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP90A 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 MPLAD36KP90A meets industry standards.
7.What is the process for return or replacement of MPLAD36KP90A?
All MPLAD36KP90A units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP90A, 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 MPLAD36KP90A part is unused and in its original packaging.
Return procedure for MPLAD36KP90A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP90A Tags
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