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Microchip Technology MAPLAD36KP350AE3
- Part No.:
- MAPLAD36KP350AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP350AE3.pdf
- Description:
- TVS DIODE 350VWM 564VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,656
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Product details
Overview
MAPLAD36KP350AE3 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, clamps at ≤564 V under 100 A impulse current, and features a 350 V reverse standoff voltage (VWM) with 389–431 V breakdown voltage (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 MAPLAD36KP350AE3 datasheet, MAPLAD36KP350AE3 pinout, MAPLAD36KP350AE3 application, or MAPLAD36KP350AE3 equivalent, key selection criteria include its 350 V VWM rating, 564 V max clamping voltage at IPP, RoHS-compliant e3 plating, 1.0 °C/W junction-to-case thermal resistance, and qualification to AEC-Q101 and MIL-PRF-19500 screening levels.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered above its reverse standoff voltage, leveraging avalanche breakdown to divert transients away from sensitive circuitry. Its metal-base cathode construction provides direct thermal path to PCB copper, enabling efficient heat dissipation during multi-stroke events.
It meets RTCA DO-160F Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 requirements at 25°C, with derating required above ambient temperature per Figure 3. The device is rated for 1000 A peak impulse current (IPP) and supports steady-state power 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 - sustains aircraft lightning-induced surges without failure |
| Reverse Standoff Voltage (VWM) | 350 V - maximum continuous operating voltage before clamping initiates |
| Clamping Voltage (VC) | ≤564 V @ 100 A - limits downstream voltage stress during surge events |
| Breakdown Voltage (V(BR)) | 389–431 V @ 5 mA - defines precise avalanche turn-on threshold |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct mounting to heatsinked PCB copper for thermal management |
| RoHS Compliance | e3 marking - lead-free matte-tin plating compliant with EU Directive 2011/65/EU |
| Surge Rating | IEC 61000-4-5 Class 5 (42 Ω source) - validated for secondary lightning protection in avionics |
Pinout & Package
MAPLAD36KP350AE3 uses a surface-mount PLAD package with metal base cathode terminal and top-side anode pad. The metal base serves as the cathode connection and primary thermal conduction path to the PCB. Package dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), with recommended pad layout per RF01216 Rev B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary current return path and thermal interface; must be soldered to large copper pour for heat sinking |
| Top-Side Pad | Anode | Signal-side connection point; routed to protected line (e.g., power rail or data line) |
Key Features
| Feature | Design Value |
|---|---|
| High-reliability wafer lot traceability | Full fabrication and assembly batch tracking per MIL-PRF-19500 for mission-critical programs |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications requiring extended temperature and life-cycle reliability |
| Low-profile void-free epoxy body | UL94V-0 rated thermoset package minimizes height (<5.33 mm) while ensuring mechanical robustness in vibration-prone environments |
| RTCA DO-160F Section 22 compliance | Proven multi-stroke lightning survivability - critical for flight control and navigation system protection |
| Moisture Sensitivity Level 1 | No dry-pack or baking required prior to reflow - simplifies SMT manufacturing and reduces process risk |
Applications
| Avionics Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus in flight control computers from induced lightning transients during ground operations and in-flight exposure. IC Role / Device Role / Timing Role: Unidirectional TVS placed at main power input to clamp surges before they reach DC/DC converters and FPGAs. Use Value: Enables compliance with RTCA DO-160F Section 22 Level 4 waveform testing using single-device placement on 28 V rail. |
Use Scenario: Safeguarding engine control unit (ECU) power inputs against 12 V battery load dump events exceeding 120 V for 400 ms. IC Role / Device Role / Timing Role: Primary clamping device across battery feed, activated within <100 ps to limit voltage to ≤564 V. Use Value: Prevents MOSFET gate oxide rupture and microcontroller latch-up during ISO 7637-2 Pulse 5a events. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Shielding 350 V DC link in variable-frequency drives from switching-induced voltage spikes and regenerative energy transients. IC Role / Device Role / Timing Role: High-power TVS connected between DC+ and DC− rails to absorb repetitive 36 kW pulses without degradation. Use Value: Extends capacitor and IGBT lifetime by limiting overvoltage stress during rapid deceleration cycles. |
Use Scenario: Protecting 350 V signaling lines in European ERTMS/ETCS Level 2 trackside equipment from induced surges during thunderstorms. IC Role / Device Role / Timing Role: Secondary surge protector installed after gas discharge tube (GDT) front-end to handle residual energy and fast-rising edges. Use Value: Meets EN 50121-4 Class 4 immunity requirements with coordinated clamping response below 564 V. |
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 SP36-350 | 350 V VWM, 560 V VC @ 100 A, but rated for 30 kW PPP and lacks AEC-Q101 qualification | Approved for industrial telecom, not certified for DO-160F or automotive use | Select when cost sensitivity outweighs aerospace qualification requirements |
| Vishay SMAJ350A | 350 V VWM, 574 V VC @ 100 A, 400 W PPP rating - 90× lower peak power capability | Suitable only for low-energy ESD/EFT, not lightning or load dump | Use only for board-level ESD protection where 36 kW surge capacity is unnecessary |
Compared with SP36-350 and SMAJ350A, MAPLAD36KP350AE3 uniquely combines 36 kW surge handling, AEC-Q101 qualification, and RTCA DO-160F compliance - making it the sole option for certified avionics and high-reliability automotive power systems requiring multi-stroke survivability.
Availability
MAPLAD36KP350AE3 is available at Aetrix Electronics and suitable for avionics power distribution, automotive load dump protection, industrial motor drive DC bus, and railway signaling interface applications requiring stable component supply across long production lifecycles.
Supply support for MAPLAD36KP350AE3 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.
The MAPLAD36KP350AE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for lightning and load-dump protection in safety-critical systems where multi-stroke surge endurance and thermal stability are mandatory.
FAQ
What is the clamping voltage of MAPLAD36KP350AE3 at its rated peak pulse current?
The MAPLAD36KP350AE3 has a maximum clamping voltage (VC) of 564 V at 100 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value ensures downstream components experience voltage stress below their absolute maximum ratings during standardized surge events defined in IEC 61000-4-5 and RTCA DO-160F.
Is MAPLAD36KP350AE3 qualified for automotive applications?
Yes, MAPLAD36KP350AE3 is qualified to AEC-Q101 for automotive applications. It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and surge validation per ISO 7637-2 Pulse 5a, making it suitable for engine control units, battery management systems, and ADAS power supplies where load dump protection is critical.
Does MAPLAD36KP350AE3 meet RTCA DO-160F lightning protection requirements?
Yes, MAPLAD36KP350AE3 is validated for RTCA DO-160F Section 22 lightning-induced transient testing. It passes Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 at 25°C, with documented derating guidance in MicroNote 132 for elevated ambient temperatures.
What is the thermal resistance and recommended mounting method for MAPLAD36KP350AE3?
MAPLAD36KP350AE3 has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W. Its metal base cathode must be soldered directly to a minimum 25 mm² copper pour on FR4 PCB using the pad layout specified in RF01216 Rev B. No thermal interface material is required - direct metal-to-copper contact maximizes heat transfer efficiency.
How does the e3 suffix in MAPLAD36KP350AE3 affect its compliance and processing?
The e3 suffix in MAPLAD36KP350AE3 indicates RoHS-compliant matte-tin plating per EU Directive 2011/65/EU. It supports standard Pb-free reflow profiles (JEDEC J-STD-020B Level 1), requires no dry-pack moisture mitigation, and is compatible with automated SMT assembly without special handling or baking steps.
MAPLAD36KP350AE3 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):
- 350V
- Voltage - Breakdown (Min):
- 389V
- Voltage - Clamping (Max) @ Ipp:
- 564V
- Current - Peak Pulse (10/1000µs):
- 64A
- 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
MAPLAD36KP350AE3 FAQ
1.How can I place an order for MAPLAD36KP350AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP350AE3 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 MAPLAD36KP350AE3 reliable?
The price and inventory of MAPLAD36KP350AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP350AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP350AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP350AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP350AE3?
MAPLAD36KP350AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP350AE3 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 MAPLAD36KP350AE3?
For technical support, including MAPLAD36KP350AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP350AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP350AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP350AE3 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 MAPLAD36KP350AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP350AE3?
All MAPLAD36KP350AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP350AE3, 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 MAPLAD36KP350AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP350AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP350AE3 Tags
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