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Microchip Technology MAPLAD36KP90AE3
- Part No.:
- MAPLAD36KP90AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP90AE3.pdf
- Description:
- TVS DIODE 90VWM 146VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,183
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Product details
Overview
MAPLAD36KP90AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive 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 IPP, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP90AE3 datasheet, MAPLAD36KP90AE3 pinout, MAPLAD36KP90AE3 application, or MAPLAD36KP90AE3 equivalent, key selection criteria include its 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant e3 plating, UL94V-0 void-free epoxy package, and verified compliance with IEC 61000-4-2/4-4/4-5 and RTCA/DO-160F Waveform 4 & 5A pin injection levels.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry, activating above its 90 V VWM to divert surge current away from downstream components. Its breakdown voltage range is 100–111 V at 5 mA, with clamping voltage capped at 146 V under 247 A peak impulse current per 10/1000 μs waveform.
Thermal design relies on direct metal-base mounting to heatsinks, leveraging low RθJC = 1.0 °C/W and RθJA = 50 °C/W (on FR4). It supports steady-state dissipation of 2.5 W at 25°C ambient and is rated for junction temperatures from –55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W @ 10/1000 μs - enables robust secondary lightning protection per IEC 61000-4-5 and RTCA DO-160F |
| Reverse Standoff Voltage (VWM) | 90 V - maximum continuous operating voltage before clamping initiates; matches 72–90 V DC bus systems |
| Clamping Voltage (VC) | ≤146 V @ 247 A - limits transient overvoltage seen by protected ICs or connectors |
| Breakdown Voltage (V(BR)) | 100–111 V @ 5 mA - defines precise turn-on threshold with tight 5.5% tolerance |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows efficient heat transfer to external heatsink, critical for repeated surge duty |
| RoHS Compliance | e3 designation - matte-tin plating compliant with EU RoHS Directive 2011/65/EU |
| Package Type | PLAD - surface-mount, low-profile thermoset epoxy case with metal base cathode termination |
Pinout & Package
The MAPLAD36KP90AE3 uses a 2-terminal PLAD package with the cathode electrically connected to the exposed metal base (bottom side), and the anode accessible via the top-side metallized pad. Mounting requires thermal interface to a heatsink or copper pour for sustained surge handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Metal Base) | Current Sink / Ground Reference | Low-inductance, high-current return path; must be soldered to thermal pad/heatsink for RθJC = 1.0 °C/W performance |
| Anode (Top Pad) | Surge Input / Line Connection | Connected to protected line (e.g., aircraft avionics power rail); carries full IPP during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Multi-stroke Lightning Compliance | Validated for RTCA DO-160 Section 22 Level 4 & 5 waveforms - ensures reliability across repeated aircraft lightning strikes |
| Low Thermal Resistance | RθJC = 1.0 °C/W - enables >100× higher surge repetition rate vs. standard SMC packages under identical PCB layout |
| High Surge Current Rating | IPP = 247 A @ 10/1000 μs - protects against load dump and induced surges in 28 V and 115 VAC aircraft systems |
| Moisture Sensitivity Level | MSL Level 1 - no dry pack or bake-out required prior to reflow, reducing manufacturing overhead |
| AEC-Q101 Qualified | Tested per AEC-Q101 stress requirements - confirms suitability for automotive under-hood and powertrain applications |
Applications
| Avionics Power Bus Protection | Aircraft Lighting Control Systems |
|---|---|
Use Scenario: Protecting 28 V DC distribution buses in commercial aircraft from lightning-induced transients per DO-160F Section 22. IC Role / Device Role / Timing Role: Parallel-connected clamping TVS that activates within <100 ps to limit bus voltage excursion during multi-kA surges. Use Value: Enables compliance with FAA airworthiness requirements by limiting transient overvoltage to <146 V, preventing latch-up or damage to downstream PMICs and microcontrollers. | Use Scenario: Safeguarding LED driver modules in cabin and exterior lighting against load dump and ESD events during maintenance or switching. IC Role / Device Role / Timing Role: High-power transient shunt placed at driver input to absorb 36 kW surges without degradation over 10,000+ strike cycles. Use Value: Eliminates need for redundant fusing or derated designs, supporting extended service life and reduced maintenance intervals in certified lighting systems. |
| Automotive 48 V Mild Hybrid Systems | Industrial Motor Drive DC Link Protection |
Use Scenario: Securing 48 V battery management and DC-DC converter inputs against ISO 7637-2 Pulse 5a/b load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS mounted directly at connector entry point to clamp fast-rising transients before reaching gate drivers. Use Value: Withstands 247 A peak current and maintains VWM = 90 V, allowing safe operation across 48 V nominal ±20% tolerance while meeting AEC-Q101 qualification. | Use Scenario: Protecting IGBT gate drivers and sensing circuits in variable-frequency drives subjected to IEC 61000-4-5 Class 4 surges (42 Ω source). IC Role / Device Role / Timing Role: Secondary-level TVS deployed across DC link capacitors to suppress common-mode transients induced by fast-switching power stages. Use Value: Clamps to ≤146 V within nanoseconds, preventing false triggering of overvoltage protection and enabling reliable operation in factory automation environments. |
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 | 600 W PPP rating, SMB package, RθJC ≈ 15 °C/W, IPP = 33.3 A | Lower energy handling; suitable only for single-event ESD/EFT, not multi-stroke lightning | Select SMBJ90A only for cost-sensitive consumer-grade applications where 36 kW capability is unnecessary. |
| SMCJ90A | 1500 W PPP rating, SMC package, RθJC ≈ 3.5 °C/W, IPP = 127 A | Lacks RTCA DO-160F validation and MSL Level 1 rating; limited to industrial non-certified use | Choose SMCJ90A for general-purpose industrial surge suppression where aerospace certification and thermal performance are not required. |
Compared with SMBJ90A and SMCJ90A, MAPLAD36KP90AE3 provides 24× and 2.8× higher peak pulse power respectively, validated multi-stroke lightning endurance, and superior thermal management-making it the only option qualified for certified avionics and high-reliability 48 V automotive systems.
Availability
MAPLAD36KP90AE3 is available at Aetrix Electronics and suitable for avionics power bus protection, aircraft lighting control systems, and automotive 48 V mild hybrid systems requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MAPLAD36KP90AE3 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 solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP90AE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for certified airborne equipment requiring DO-160F compliance, multi-stroke surge endurance, and ultra-low thermal resistance in surface-mount form.
FAQ
What is the clamping voltage of MAPLAD36KP90AE3 at its rated peak pulse current?
The MAPLAD36KP90AE3 has a maximum clamping voltage (VC) of 146 V when subjected to its rated peak pulse current of 247 A under the standard 10/1000 μs waveform. This value is guaranteed across temperature and lot variations per the manufacturer's electrical characteristics table and is critical for ensuring protected circuitry remains below absolute maximum voltage ratings during surge events.
Is MAPLAD36KP90AE3 qualified for automotive applications?
Yes, MAPLAD36KP90AE3 is tested and qualified to AEC-Q101 standards for discrete semiconductors, confirming its reliability in automotive environments including under-hood and powertrain applications. Its 90 V VWM and 36 kW surge capability make it suitable for 48 V mild hybrid systems subject to ISO 7637-2 load dump transients.
Does MAPLAD36KP90AE3 require moisture sensitivity handling before reflow soldering?
No, MAPLAD36KP90AE3 is rated MSL Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and does not require dry packing, baking, or special handling prior to reflow soldering-reducing manufacturing complexity and cost in high-volume assembly.
How is thermal management implemented for MAPLAD36KP90AE3 in high-duty-cycle applications?
MAPLAD36KP90AE3 achieves thermal management through its metal-base PLAD package, which provides a direct thermal path from junction to heatsink with RθJC = 1.0 °C/W. Effective cooling requires soldering the cathode base to a thermally robust copper pour or external heatsink, as specified in the recommended pad layout, to sustain repeated 36 kW surges without exceeding 150°C junction temperature.
What certifications does MAPLAD36KP90AE3 meet for aerospace use?
MAPLAD36KP90AE3 meets RTCA DO-160F Section 22 for multi-stroke lightning protection (Waveform 4 and 5A, Levels 4 and 5), IEC 61000-4-2/4-4/4-5 for ESD, EFT, and surge immunity, and is offered with optional MIL-PRF-19500 upscreening. Its qualification supports installation in FAA-certified avionics equipment requiring secondary lightning protection.
MAPLAD36KP90AE3 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
MAPLAD36KP90AE3 FAQ
1.How can I place an order for MAPLAD36KP90AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP90AE3 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 MAPLAD36KP90AE3 reliable?
The price and inventory of MAPLAD36KP90AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP90AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP90AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP90AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP90AE3?
MAPLAD36KP90AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP90AE3 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 MAPLAD36KP90AE3?
For technical support, including MAPLAD36KP90AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP90AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP90AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP90AE3 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 MAPLAD36KP90AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP90AE3?
All MAPLAD36KP90AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP90AE3, 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 MAPLAD36KP90AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP90AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP90AE3 Tags
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