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Microchip Technology MAPLAD36KP110AE3
- Part No.:
- MAPLAD36KP110AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP110AE3.pdf
- Description:
- TVS DIODE 110VWM 177VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,469
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Product details
Overview
MAPLAD36KP110AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive power systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps at ≤177 V under 500 A impulse, and features a 110 V reverse standoff voltage (VWM), 122–135 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP110AE3 datasheet, MAPLAD36KP110AE3 pinout, MAPLAD36KP110AE3 application, or MAPLAD36KP110AE3 equivalent, key selection criteria include its 110 V VWM rating, unidirectional polarity, low-profile PLAD package with metal-base cathode, and compliance with IEC 61000-4-5 (Class 1–5, 2–42 Ω source), ESD (IEC 61000-4-2), and EFT (IEC 61000-4-4) standards.
Technical Context
This TVS diode operates as a clamping device in DC power rail protection, activated when transient voltage exceeds its 110 V standoff threshold. Its silicon avalanche structure provides fast response (<100 ps rise time) and stable clamping performance across -55°C to +150°C operating range, with thermal design enabled by direct metal-base mounting and 1.0 °C/W RθJC.
It supports secondary lightning protection per IEC 61000-4-5 under multiple source impedances (2 Ω, 12 Ω, 42 Ω), and satisfies RTCA/DO-160F Waveform 4 (Level 4/5) and Waveform 5A (Level 4/5) pin-injection requirements - validated for aircraft avionics power inputs and engine control units where multi-stroke survivability is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - enables single-device suppression of severe lightning-induced transients without cascading failure |
| Reverse Standoff Voltage (VWM) | 110 V - sets maximum continuous operating voltage before clamping activation; matches 96–100 V nominal 28 V aircraft bus derated peaks |
| Breakdown Voltage (V(BR)) | 122–135 V @ 5 mA - defines precise avalanche onset window for predictable clamping margin above VWM |
| Max Clamping Voltage (VC) | 177 V @ 500 A - limits protected circuit voltage during worst-case surge, preserving downstream MOSFETs and controllers |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows efficient heat transfer to PCB copper or heatsink, supporting >1000 surge cycles with <0.05% duty factor |
| Standby Current (ID) | 10 μA @ 110 V - ensures negligible leakage in always-on avionics power rails, avoiding battery drain or false fault detection |
| Temperature Range | -55°C to +150°C - certified for engine bay, wing-mounted, and flight-critical locations without derating |
Pinout & Package
The MAPLAD36KP110AE3 uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.08 mm), matte-tin-plated terminals, and metal base acting as cathode terminal. Mounting requires recommended pad layout (11.94 × 5.85 mm) for optimal thermal conduction and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary current path and thermal interface - must be soldered to large copper pour or heatsink for RθJC = 1.0 °C/W performance |
| Top Surface Pad | Anode | Signal/power input node - connects to protected line (e.g., 28 V main bus); minimal trace inductance required for sub-100 ps response |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring zero defect reliability over 15+ year service life |
| RTCA DO-160 Section 22 compliant | Survives ≥100 multi-stroke lightning surges (10/1000 μs) without parameter shift - essential for FAA-certified avionics |
| RoHS-compliant (e3) | Lead-free matte-tin plating compatible with Pb-free reflow profiles (260°C/10 s) and IPC/JEDEC J-STD-020B Level 1 moisture sensitivity |
| Low-profile PLAD package | 5.08 mm height enables integration into space-constrained flight control modules and engine ECUs without airflow obstruction |
| Wafer and assembly lot traceability | Full traceability to wafer fab and assembly batch supports AS9100D configuration management and field return analysis |
Applications
| Avionics Power Input Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: 28 V DC power entry point in flight management computers, inertial navigation units, and radio transceivers exposed to lightning-induced surges per DO-160F Waveform 4/5A. IC Role / Device Role / Timing Role: Primary clamping TVS placed directly at connector interface to limit transient voltage before it reaches DC-DC converters and microcontrollers. Use Value: 177 V clamping at 500 A prevents latch-up or gate oxide rupture in downstream 200 V-rated power MOSFETs and PMICs. | Use Scenario: 12 V/24 V battery-fed engine control unit (ECU) subjected to ISO 7637-2 Load Dump pulses up to 120 V/100 ms during alternator disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS connected between battery rail and ground, absorbing energy before upstream fuse or regulator fails. Use Value: 36 kW PPP rating handles full load dump energy without degradation, eliminating need for parallel TVS arrays or bulky varistors. |
| Industrial Motor Drive DC Bus | Railway Signaling Power Interface |
Use Scenario: DC link protection in 400 V industrial servo drives where IGBT switching induces repetitive 1–2 kV spikes with 100 ns rise times. IC Role / Device Role / Timing Role: Fast-response clamping device placed across DC bus capacitors to clamp overshoot and reduce EMI filter burden. Use Value: Sub-100 ps response time and 1.0 °C/W RθJC enable reliable suppression of >10⁴ switching events/year without thermal runaway. | Use Scenario: 110 V DC signaling power supply for trackside interlocking systems subject to induced surges from nearby traction currents and lightning coupling. IC Role / Device Role / Timing Role: Secondary surge protector installed after primary gas discharge tube (GDT), providing low-clamp refinement for sensitive relay drivers and optocouplers. Use Value: 110 V VWM aligns precisely with nominal 110 V railway supply, minimizing standby leakage while maintaining 67 V safety margin to VC = 177 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 |
|---|---|---|---|
| SMBJ110A | 600 W PPP rating (vs. 36,000 W); DO-214AA package; 1.5 °C/W RθJA; no AEC-Q101 or DO-160 qualification | Only suitable for low-energy consumer electronics; cannot meet aircraft lightning or automotive load dump requirements | Select MAPLAD36KP110AE3 when system-level surge immunity standards exceed 1 kA or require multi-stroke endurance. |
| SMCJ110A | 1500 W PPP rating; DO-214AB package; 1.0 °C/W RθJC; AEC-Q101 qualified but not DO-160 tested | Valid for automotive ECU use but lacks RTCA/DO-160F Waveform 4/5A validation and 36 kW energy absorption | Choose MAPLAD36KP110AE3 for FAA/EASA-certified platforms where DO-160 compliance is mandatory and surge repetition is frequent. |
Compared with SMBJ110A and SMCJ110A, MAPLAD36KP110AE3 delivers 24× and 24× higher peak pulse power respectively, supports full DO-160F certification testing, and maintains clamping stability over 1000+ surge cycles - making it the only option for mission-critical aerospace and heavy-duty automotive power interfaces.
Availability
MAPLAD36KP110AE3 is available at Aetrix Electronics and suitable for avionics power input protection, automotive load dump suppression, and industrial motor drive DC bus applications requiring stable component supply, long-term lifecycle support, and certified surge immunity.
Supply support for MAPLAD36KP110AE3 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, mixed-signal, and radiation-hardened ICs for aerospace, defense, and industrial markets.
The MAPLAD36KP110AE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for DO-160-compliant avionics and AEC-Q101-qualified automotive power systems demanding multi-kilowatt transient suppression in compact surface-mount form.
FAQ
What is the clamping voltage of MAPLAD36KP110AE3 at 500 A?
The MAPLAD36KP110AE3 has a maximum clamping voltage (VC) of 177 V at 500 A peak pulse current under 10/1000 μs waveform conditions. This value is guaranteed per datasheet Figure 3 and ensures protected circuits remain below critical voltage thresholds during severe transients. The clamping performance is stable across temperature and repeat surge events due to its low thermal resistance and robust silicon die construction.
Is MAPLAD36KP110AE3 RoHS compliant?
Yes, MAPLAD36KP110AE3 is RoHS compliant, indicated by the "e3" suffix in its nomenclature. It features annealed matte-tin plating on terminals and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity - requiring no dry pack and supporting standard Pb-free reflow profiles up to 260°C for 10 seconds. Full RoHS documentation is available upon request from Aetrix Electronics.
Does MAPLAD36KP110AE3 meet RTCA DO-160 Section 22 requirements?
Yes, MAPLAD36KP110AE3 is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing. It withstands ≥100 strokes at 36 kW (10/1000 μs) without parameter shift or visual damage. This qualification is documented in Microsemi Application Note RF01216 Rev B and is integral to its use in FAA-certified avionics power supplies and flight control hardware.
What is the thermal resistance junction-to-case for MAPLAD36KP110AE3?
The MAPLAD36KP110AE3 has a junction-to-case thermal resistance (RθJC) of 1.0 °C/W, measured with case temperature controlled on a heatsink per test condition 4 in the datasheet. This low value enables effective heat dissipation when the metal base is soldered to a large copper area or external heatsink, supporting high-repetition surge duty cycles without thermal runaway.
How is polarity identified on MAPLAD36KP110AE3?
MAPLAD36KP110AE3 is unidirectional, with polarity marked by the metal base serving as the cathode terminal. The top surface pad is the anode. No polarity symbol appears on the body - correct orientation is confirmed by mounting the metal base toward ground or low-impedance return path. This configuration ensures optimal clamping behavior and thermal conduction in DC power rail protection layouts.
MAPLAD36KP110AE3 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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 204A
- 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
MAPLAD36KP110AE3 FAQ
1.How can I place an order for MAPLAD36KP110AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP110AE3 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 MAPLAD36KP110AE3 reliable?
The price and inventory of MAPLAD36KP110AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP110AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP110AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP110AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP110AE3?
MAPLAD36KP110AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP110AE3 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 MAPLAD36KP110AE3?
For technical support, including MAPLAD36KP110AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP110AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP110AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP110AE3 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 MAPLAD36KP110AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP110AE3?
All MAPLAD36KP110AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP110AE3, 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 MAPLAD36KP110AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP110AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP110AE3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Diodes Incorporated
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