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Microchip Technology MAPLAD36KP22AE3
- Part No.:
- MAPLAD36KP22AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP22AE3.pdf
- Description:
- TVS DIODE 22VWM 36.4VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,409
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Product details
Overview
MAPLAD36KP22AE3 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 22 V reverse standoff voltage (VWM), clamps to ≤36.4 V at 990 A peak pulse current, and operates across –55°C to +150°C junction temperature.
For engineers reviewing the MAPLAD36KP22AE3 datasheet, MAPLAD36KP22AE3 pinout, MAPLAD36KP22AE3 application, or MAPLAD36KP22AE3 equivalent, key selection criteria include its DO-160 Section 22 multi-stroke lightning compliance, IEC 61000-4-5 Class 4/5 secondary lightning capability with 42 Ω source impedance, and RoHS-compliant e3 matte-tin plating for lead-free assembly.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transients, with a specified breakdown voltage range of 24.4–26.9 V at 5 mA test current and a maximum clamping voltage of 36.4 V at 990 A IPP. Its thermal resistance is 1.0 °C/W junction-to-case and 50 °C/W junction-to-ambient on FR4 with recommended pad layout.
It meets RTCA/DO-160F Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 up to 78 V standoff, and supports secondary lightning protection per IEC 61000-4-5 under 2 Ω, 12 Ω, and 42 Ω source impedances - with validated Class 4 performance at 42 Ω for MAPLAD36KP22AE3 specifically.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W @ 10/1000 μs - enables single-device protection against severe lightning-induced surges in aircraft avionics busses |
| Reverse Standoff Voltage (VWM) | 22 V - matches nominal 24 V DC systems while allowing margin above operating peak voltage |
| Clamping Voltage (VC) | ≤36.4 V @ 990 A - ensures downstream 36 V-rated ICs remain within absolute maximum ratings during surge |
| Breakdown Voltage (V(BR)) | 24.4–26.9 V @ 5 mA - defines precise conduction onset threshold for predictable turn-on behavior |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows direct mounting to metal heatsinks or chassis for sustained multi-pulse operation |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - eliminates dry-pack requirement and floor-life constraints for SMT assembly |
| RoHS Compliance | e3 matte-tin plating - satisfies lead-free reflow profiles and environmental compliance without solderability compromise |
Pinout & Package
MAPLAD36KP22AE3 uses a surface-mount PLAD package with a metal base cathode terminal and molded thermosetting epoxy body (UL94V-0). The device has two terminals: anode (top surface metallization) and cathode (exposed metal base).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal | Connected to protected line; conducts surge current toward cathode during overvoltage events |
| Cathode | Negative return / heat sink interface | Exposed metal base serves as primary thermal path and electrical return; must be soldered to copper pour or heatsink |
Key Features
| Feature | Design Value |
|---|---|
| DO-160 Section 22 multi-stroke lightning compliance | Validated for ≥1000 surges at rated energy - essential for aircraft power distribution system longevity |
| IEC 61000-4-5 Class 4/5 secondary lightning protection | Rated for 42 Ω source impedance testing - meets stringent industrial and aerospace surge immunity requirements |
| Low-profile surface-mount construction | Height ≤0.210 in (5.33 mm) - enables placement in space-constrained avionics modules without airflow obstruction |
| 3σ lot norm screening on standby current (ID) | ID ≤10 μA @ 22 V - guarantees low leakage in always-on monitoring circuits and battery-backed systems |
| AEC-Q101 qualified | Stress-tested per automotive-grade reliability standard - supports use in engine control and ADAS power rails |
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: Primary shunt clamping device placed at bus entry point to divert >30 kA surge currents away from downstream regulators and FPGAs. Use Value: Enables compliance with RTCA/DO-160F Section 22 Waveform 4 Level 4, reducing need for redundant protection stages. | Use Scenario: Safeguarding infotainment head units during alternator load dump events in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Fast-response TVS placed upstream of DC/DC converters to clamp 120 V/400 ms transients before they reach sensitive SoCs. Use Value: Withstands 990 A peak pulse current at 36.4 V clamping, preventing latch-up or gate oxide damage in PMICs. |
| Industrial Motor Drive Inputs | Railway Signaling Interfaces |
Use Scenario: Shielding PLC analog input modules connected to 24 V field sensors exposed to switching noise and EFT bursts. IC Role / Device Role / Timing Role: Input-stage transient suppressor absorbing IEC 61000-4-4 EFT bursts (4 kV, 5/50 ns) and inductive kickback from solenoid drivers. Use Value: Clamps sub-100 ns, limiting voltage overshoot to <36.4 V - preserving 24 V ADC reference integrity and measurement accuracy. | Use Scenario: Protecting Ethernet PHY interfaces in track-side signaling equipment subjected to induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Line-side TVS on isolated 24 V auxiliary power rail feeding PoE midspans and signal conditioners. Use Value: Validated for IEC 61000-4-5 Class 4 with 42 Ω source impedance - meets EN 50121-4 immunity requirements for railway EMC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | 600 W PPP rating, 300 A IPP, SMB package - 60× lower peak power handling than MAPLAD36KP22AE3 | Intended for board-level ESD/EFT only; not certified for DO-160 or IEC 61000-4-5 Class 4/5 | Select when cost and footprint are prioritized over lightning-level surge robustness |
| SMCJ22A | 1500 W PPP rating, 67.5 A IPP, SMC package - 24× lower peak power, no DO-160 validation | Suitable for industrial I/O protection but lacks multi-stroke endurance and aerospace qualification traceability | Choose for non-aerospace 24 V systems where full 36 kW surge capacity is unnecessary |
Compared with SMBJ22A and SMCJ22A, MAPLAD36KP22AE3 provides 60× and 24× higher peak pulse power respectively, along with documented DO-160F Section 22 and IEC 61000-4-5 Class 4/5 compliance - making it the only option qualified for primary lightning protection in certified avionics installations.
Availability
MAPLAD36KP22AE3 is available at Aetrix Electronics and suitable for avionics power distribution, automotive load dump protection, and industrial motor drive inputs requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP22AE3 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 semiconductor solutions for aerospace, defense, and industrial markets, with emphasis on radiation-hardened, high-power, and safety-critical applications.
MAPLAD36KP22AE3 belongs to the PLAD family of high-power surface-mount TVS diodes engineered specifically for multi-stroke lightning protection in DO-160-certified aircraft systems and harsh-environment industrial controls.
FAQ
What is the clamping voltage of MAPLAD36KP22AE3 at its rated peak pulse current?
MAPLAD36KP22AE3 has a maximum clamping voltage (VC) of 36.4 V at 990 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed across temperature and ensures protected circuitry remains below critical voltage thresholds during surge events. The clamping performance is verified per Figure 3 in the RF01216 datasheet and applies directly to MAPLAD36KP22AE3.
Does MAPLAD36KP22AE3 meet RTCA/DO-160F Section 22 lightning requirements?
Yes, MAPLAD36KP22AE3 is explicitly validated for RTCA/DO-160F Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4. Its 36 kW rating and thermal design enable ≥1000 stroke endurance - a requirement for primary lightning protection in certified avionics. This capability is confirmed in the RF01216 Rev B datasheet for MAPLAD36KP22AE3.
What is the polarity and terminal configuration of MAPLAD36KP22AE3?
MAPLAD36KP22AE3 is a unidirectional TVS diode with cathode on the metal base (bottom side) and anode on the top metallized surface. The "A" suffix in the part number confirms unidirectional construction, and polarity marking is present only on unidirectional versions per the datasheet. This configuration requires the cathode to be soldered to ground or chassis for proper clamping operation - a critical layout detail for MAPLAD36KP22AE3.
Is MAPLAD36KP22AE3 compliant with AEC-Q101 and RoHS standards?
Yes, MAPLAD36KP22AE3 is tested and qualified to AEC-Q101 for automotive-grade reliability and carries the "e3" suffix indicating RoHS-compliant matte-tin plating. It meets J-STD-020B Moisture Sensitivity Level 1, eliminating dry-pack requirements, and supports lead-free reflow profiles up to 260°C for 10 seconds - all confirmed in the official RF01216 Rev B specification for MAPLAD36KP22AE3.
How does the thermal performance of MAPLAD36KP22AE3 support repeated surge events?
MAPLAD36KP22AE3 achieves 1.0 °C/W junction-to-case thermal resistance via its metal-base PLAD package, enabling efficient heat transfer to PCB copper pours or external heatsinks. When mounted per the recommended pad layout on FR4, its junction-to-ambient RθJA is 50 °C/W - allowing dissipation of cumulative heating from multi-pulse surges in lightning testing. This thermal design is integral to MAPLAD36KP22AE3's DO-160F Section 22 qualification.
MAPLAD36KP22AE3 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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 36.4V
- Current - Peak Pulse (10/1000µs):
- 990A
- 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
MAPLAD36KP22AE3 FAQ
1.How can I place an order for MAPLAD36KP22AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP22AE3 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 MAPLAD36KP22AE3 reliable?
The price and inventory of MAPLAD36KP22AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP22AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP22AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP22AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP22AE3?
MAPLAD36KP22AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP22AE3 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 MAPLAD36KP22AE3?
For technical support, including MAPLAD36KP22AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP22AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP22AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP22AE3 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 MAPLAD36KP22AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP22AE3?
All MAPLAD36KP22AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP22AE3, 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 MAPLAD36KP22AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP22AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP22AE3 Tags
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