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Microchip Technology MAPLAD36KP24AE3
- Part No.:
- MAPLAD36KP24AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP24AE3.pdf
- Description:
- TVS DIODE 24VWM 39.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:3,265
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Product details
Overview
MAPLAD36KP24AE3 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, clamps at ≤39.8 V under 905 A peak impulse current, and features a 24 V reverse standoff voltage with 26.7–29.5 V breakdown range. It meets RTCA DO-160 Section 22 multi-stroke lightning requirements and IEC 61000-4-5 Class 4 secondary lightning protection (42 Ω source).
For engineers reviewing the MAPLAD36KP24AE3 datasheet, MAPLAD36KP24AE3 pinout, MAPLAD36KP24AE3 application, or MAPLAD36KP24AE3 equivalent, key selection criteria include its 24 V VWM rating, low 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant e3 termination, and suitability for pin-injection protection per RTCA/DO-160F Waveform 4 Level 4.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry to divert high-current transients-such as load dump, lightning-induced surges, or EFT-away from downstream components. Its silicon avalanche structure enables sub-100 ps response time and stable breakdown behavior across temperature.
It is rated for continuous operation from –55 °C to +150 °C, supports steady-state dissipation up to 71 W at 100 °C case temperature, and maintains <10 μA standby current at 24 V standoff. The metal-base cathode configuration requires thermal pad mounting on FR4 PCBs per specified footprint for optimal heat transfer.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning surge energy without failure |
| Reverse Standoff Voltage (VWM) | 24 V - maximum continuous operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 26.7–29.5 V @ 5 mA - defines reliable avalanche onset threshold |
| Max Clamping Voltage (VC) | 39.8 V @ 905 A - limits protected circuit voltage during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables high-power dissipation when mounted on heatsinked copper pad |
| Standby Current (ID) | <10 μA @ 24 V - negligible leakage in normal operation |
| Operating Temperature Range | –55 °C to +150 °C - qualified for extended-range aerospace and engine-bay environments |
Pinout & Package
MAPLAD36KP24AE3 uses a PLAD (Plastic Low-Profile Anode-Diode) package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.08 mm), matte-tin RoHS-compliant plating (e3), and metal base cathode terminal. Mounting requires thermal pad per datasheet layout (A = 11.94 mm, B = 5.85 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and electrical return; must be soldered to large copper thermal pad |
| Top Surface Pad | Anode | Signal-side connection; minimal thermal contribution; routed for low-inductance surge path |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Surge Rating | Enables single-device protection against RTCA DO-160 Section 22 multi-stroke lightning events |
| 1.0 °C/W RθJC | Allows >70 W steady-state dissipation with modest heatsinking-critical for automotive load dump hold-off |
| Level 4 Pin Injection Protection | Withstands 6.4/69 μs waveform per DO-160F without degradation-validates use in avionics I/O lines |
| e3 RoHS Termination | Matte-tin plating ensures compatibility with lead-free reflow profiles and long-term solder joint reliability |
| AEC-Q101 Qualified | Validated for automotive under-hood applications including alternator load dump and battery reversal stress |
Applications
| Aerospace Avionics Power Input | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC power inputs of flight management computers and sensor interfaces from lightning-induced transients per DO-160F Section 22. IC Role / Device Role / Timing Role: Primary clamping TVS placed directly at connector entry point to shunt surge current to chassis ground. Use Value: 39.8 V clamping ensures downstream 3.3 V/5 V regulators remain within absolute maximum ratings during 36 kW surges. | Use Scenario: Safeguarding microcontroller power rails in diesel engine ECUs exposed to ISO 7637-2 Pulse 5a (load dump) events up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS connected between battery rail and ground, activated only during overvoltage conditions. Use Value: 24 V VWM matches nominal 24 V system voltage while providing margin above regulated 28.5 V alternator output. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Suppressing switching transients on 24 V DC bus lines feeding servo drives in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing repetitive turn-off spikes from IGBT gate drivers and contactors. Use Value: 905 A IPP rating handles cumulative energy from frequent motor starts/stops without parametric drift. | Use Scenario: Shielding 24 V signaling lines in European railway interlocking systems compliant with EN 50121-3-2. IC Role / Device Role / Timing Role: Bidirectional-capable variant used (MAPLAD36KP24CA); this unidirectional version applied where polarity is fixed and ground-referenced. Use Value: 10 μA ID at 24 V prevents false triggering in low-power fail-safe circuits during long-term standby. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | 600 W PPP rating, 38.9 V VC @ 15.4 A - 60× lower surge capacity | Rated for consumer/industrial IEC 61000-4-5 Class 3 only; not DO-160 qualified | Select SMBJ24A only for cost-sensitive non-aerospace designs with sub-1 kA surge exposure. |
| SMCJ24A | 1500 W PPP rating, 38.9 V VC @ 38.9 A - 24× lower peak power than MAPLAD36KP24AE3 | Lacks AEC-Q101 and DO-160 qualification; limited thermal derating above 75 °C | Choose SMCJ24A for space-constrained board-level protection where full 36 kW capability is unnecessary. |
Compared with SMBJ24A and SMCJ24A, MAPLAD36KP24AE3 provides 60× and 24× higher peak pulse power respectively, validated clamping performance under multi-stroke lightning, and guaranteed thermal stability up to +150 °C-making it the sole option for mission-critical aerospace and heavy-duty automotive power protection.
Availability
MAPLAD36KP24AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive engine control units, and industrial motor drive systems requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP24AE3 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, RF, timing, and power solutions for aerospace, defense, and industrial markets.
MAPLAD36KP24AE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning compliance and extreme thermal cycling environments in certified airborne and vehicle platforms.
FAQ
What is the clamping voltage of MAPLAD36KP24AE3 under maximum surge conditions?
MAPLAD36KP24AE3 exhibits a maximum clamping voltage (VC) of 39.8 V at 905 A peak pulse current under the standard 10/1000 μs waveform. This value is guaranteed across temperature and represents the upper limit of voltage seen by protected circuitry during worst-case surge events-critical for ensuring downstream ICs remain within safe operating voltage ranges.
Is MAPLAD36KP24AE3 qualified for automotive applications?
Yes, MAPLAD36KP24AE3 is AEC-Q101 qualified and specifically designed for automotive under-hood applications such as engine control units. Its 24 V VWM rating aligns with 24 V vehicle systems, and it withstands ISO 7637-2 Pulse 5a load dump transients. The device's –55 °C to +150 °C operating range and 1.0 °C/W thermal resistance support reliable operation in high-temperature engine compartments.
Does MAPLAD36KP24AE3 meet RTCA DO-160 lightning protection requirements?
Yes, MAPLAD36KP24AE3 is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing. It achieves Level 4 pin injection protection per Waveform 4 (6.4/69 μs) and meets Class 4 secondary lightning protection per IEC 61000-4-5 with 42 Ω source impedance-making it suitable for primary surge protection in commercial and military avionics power inputs.
What is the thermal management requirement for MAPLAD36KP24AE3?
MAPLAD36KP24AE3 requires mounting on a thermally optimized PCB pad per the datasheet layout (11.94 mm × 5.85 mm copper area). Its 1.0 °C/W junction-to-case resistance demands direct thermal coupling to internal ground or heatsink planes. Without proper copper area, sustained surge duty cycles will exceed junction temperature limits-derating curves in Figure 3 define safe power vs. ambient temperature boundaries.
How does the e3 suffix in MAPLAD36KP24AE3 affect assembly?
The e3 suffix indicates RoHS-compliant matte-tin plating, fully compatible with lead-free reflow soldering profiles (peak 260 °C for 10 s). This finish ensures robust wetting, eliminates tin whisker risk, and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack or baking required prior to assembly. The e3 marking confirms conformance to EU Directive 2011/65/EU.
MAPLAD36KP24AE3 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 39.8V
- Current - Peak Pulse (10/1000µs):
- 905A
- 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
MAPLAD36KP24AE3 FAQ
1.How can I place an order for MAPLAD36KP24AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP24AE3 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 MAPLAD36KP24AE3 reliable?
The price and inventory of MAPLAD36KP24AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP24AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP24AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP24AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP24AE3?
MAPLAD36KP24AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP24AE3 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 MAPLAD36KP24AE3?
For technical support, including MAPLAD36KP24AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP24AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP24AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP24AE3 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 MAPLAD36KP24AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP24AE3?
All MAPLAD36KP24AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP24AE3, 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 MAPLAD36KP24AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP24AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP24AE3 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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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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