My Inquiry
My Account
Microchip Technology MAPLAD36KP40AE3
- Part No.:
- MAPLAD36KP40AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP40AE3.pdf
- Description:
- TVS DIODE 40VWM 64.5VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,787
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAPLAD36KP40AE3 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, features a 40 V reverse standoff voltage (VWM), clamps to ≤64.5 V at 559 A peak current, and operates across –55°C to +150°C junction temperature. It is qualified to AEC-Q101 and meets RTCA DO-160F Waveform 4 Level 4 pin injection requirements.
For engineers reviewing the MAPLAD36KP40AE3 datasheet, MAPLAD36KP40AE3 pinout, MAPLAD36KP40AE3 application, or MAPLAD36KP40AE3 equivalent, this device is selected for lightning robustness in avionics power rails, load dump suppression in 24 V vehicle ECUs, and secondary IEC 61000-4-5 Class 3/4 protection with 42 Ω source impedance.
Technical Context
This TVS diode uses silicon avalanche technology to provide fast-response clamping (<100 ps rise time) with low thermal resistance (RθJC = 1.0 °C/W) for sustained multi-stroke surge handling. Its void-free thermosetting epoxy package enables direct metal-base heat sinking and supports FR4 PCB mounting per specified pad layout.
It is rated for 36,000 W peak pulse power under 10/1000 μs waveform, with guaranteed clamping voltage VC ≤ 64.5 V at IPP = 559 A and standby leakage ID ≤ 10 μA at VWM = 40 V. The device exhibits a +0.044 %/°C temperature coefficient of breakdown voltage (αV(BR)) and complies with RoHS (e3 plating).
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) | 40 V - matches nominal 24 V system rails with 67% margin above peak operating voltage |
| Clamping Voltage (VC) | ≤64.5 V @ 559 A - limits downstream IC stress below 65 V during worst-case transients |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper pour or heatsink for repeated surge duty |
| Surge Current Rating (IPP) | 559 A @ 10/1000 μs - exceeds IEC 61000-4-5 Class 4 requirement with 42 Ω source |
| Standby Leakage Current (ID) | ≤10 μA @ 40 V - negligible power loss in always-on 24 V monitoring circuits |
| Operating Temperature Range | –55°C to +150°C - supports engine bay and avionics bay deployment without derating |
Pinout & Package
MAPLAD36KP40AE3 uses the PLAD surface-mount package: 12.32 mm × 10.54 mm × 5.33 mm (L×W×H), with a metal base cathode terminal and molded epoxy body meeting UL94V-0. Polarity is marked on unidirectional variants; cathode connects to the metal base (bottom side).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top surface pad) | Transient current entry point | Connected to protected line (e.g., 24 V rail); current flows anode→cathode during overvoltage |
| Cathode (metal base) | Transient current return path & thermal interface | Must be soldered to large copper area or heatsink; serves as primary thermal conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Aerospace-grade surge rating | Validated to RTCA DO-160F Waveform 4 Level 4 (6.4/69 μs) - certified for flight-critical power inputs |
| Multi-stroke lightning compliance | Meets RTCA DO-160 Section 22 multi-pulse requirements - survives repeated lightning-induced transients |
| Low-profile thermal design | RθJC = 1.0 °C/W enables >70% of PPP dissipation via case-to-heatsink path - reduces PCB hot-spot risk |
| Automotive qualification | AEC-Q101 qualified - validated for under-hood ECU use with vibration, thermal cycling, and humidity stress |
| RoHS-compliant plating | e3 matte-tin termination - ensures solderability per MIL-STD-750 Method 2026 and lead-free assembly compatibility |
Applications
| Avionics Power Input Protection | Commercial Vehicle ECU Load Dump Suppression |
|---|---|
Use Scenario: 28 V DC power input to flight control computer subjected to DO-160 Section 22 lightning-induced transients. IC Role / Device Role / Timing Role: Primary clamping device placed directly at connector entry point to limit bus voltage excursion within 100 ps. Use Value: Prevents latch-up or damage to downstream DC/DC converters and FPGAs by clamping to ≤64.5 V during 36 kW surges. |
Use Scenario: 24 V supply rail in heavy-duty truck telematics module exposed to ISO 7637-2 Pulse 5a load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at main power entry to absorb 120 V/200 ms transients before they reach PMICs. Use Value: Eliminates need for series resistors or active crowbar circuits due to 559 A single-pulse capability and low clamping ratio. |
| Industrial Motor Drive DC Bus Protection | Renewable Energy Inverter DC Link Clamp |
Use Scenario: 400 V DC bus in servo drive subjected to IGBT switching-induced voltage spikes and grid fault coupling. IC Role / Device Role / Timing Role: Secondary surge clamp parallel to bulk capacitor, triggered only during >100 V excursions beyond normal operation. Use Value: Extends electrolytic capacitor life by limiting peak voltage stress to <1.2× rated voltage during repetitive 10/1000 μs events. |
Use Scenario: PV string combiner box DC output feeding central inverter, requiring IEC 61000-4-5 Class 4 immunity with 42 Ω source. IC Role / Device Role / Timing Role: High-power TVS placed between string output and SPD stage to handle first-strike energy before MOV clamping. Use Value: Provides deterministic 64.5 V clamping vs. MOV's variable response, ensuring consistent gate driver protection margin. |
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 SP36-40 | Same 40 V VWM and 36 kW rating, but RθJC = 1.5 °C/W and no AEC-Q101 qualification | Approved for industrial automation, not certified for DO-160 or automotive under-hood use | Select when cost sensitivity outweighs aerospace qualification and thermal performance needs |
| Vishay SMAJ40A | Lower 400 W PPP rating, 600 A max IPP, and 125°C max TJ - lacks multi-stroke validation | Suitable for consumer-grade 24 V systems; cannot meet DO-160 Section 22 or IEC 61000-4-5 Class 4 | Choose only for non-safety-critical, low-duty-cycle applications where surge energy is <1% of MAPLAD36KP40AE3 capability |
Compared with SP36-40 and SMAJ40A, MAPLAD36KP40AE3 delivers superior thermal management (1.0 vs. 1.5/3.0 °C/W), certified multi-stroke endurance, and full AEC-Q101/DO-160 compliance - making it the sole option for flight-critical and automotive power rail protection where reliability is non-negotiable.
Availability
MAPLAD36KP40AE3 is available at Aetrix Electronics and suitable for avionics power conditioning, commercial vehicle ECU protection, and industrial motor drive DC bus stabilization requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD36KP40AE3 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, RF, and timing solutions for aerospace, defense, and industrial markets.
The MAPLAD36KP40AE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning and load dump protection in safety-critical power systems where thermal stability and certification compliance are mandatory.
FAQ
What is the maximum clamping voltage of MAPLAD36KP40AE3 at its rated peak pulse current?
The MAPLAD36KP40AE3 has a maximum clamping voltage (VC) of 64.5 V at its rated peak pulse current (IPP) of 559 A under 10/1000 μs waveform conditions. This value is guaranteed across the full operating temperature range and ensures downstream components remain within safe voltage limits during surge events. The clamping performance is verified per Figure 3 in the RF01216 datasheet.
Is MAPLAD36KP40AE3 qualified for automotive under-hood applications?
Yes, MAPLAD36KP40AE3 is AEC-Q101 qualified and rated for operation from –55°C to +150°C, making it suitable for under-hood automotive ECUs. Its thermal resistance (RθJC = 1.0 °C/W) and robust epoxy package enable reliable performance in high-vibration, high-temperature environments typical of engine compartments. It also meets ISO 7637-2 Pulse 5a load dump requirements.
Does MAPLAD36KP40AE3 meet RTCA DO-160 lightning protection standards?
Yes, MAPLAD36KP40AE3 is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing and Waveform 4 (6.4/69 μs) pin injection up to Level 4. Its 36 kW rating and fast response (<100 ps) ensure compliance with aircraft power system surge immunity requirements. Documentation is provided in Microsemi Application Note AN-132 and datasheet RF01216 Rev B.
What is the thermal interface requirement for MAPLAD36KP40AE3 to achieve full 36 kW rating?
To sustain full 36 kW peak pulse power, MAPLAD36KP40AE3 requires the metal cathode base to be soldered to a minimum 25 mm² copper pour on FR4 PCB (per recommended pad layout) or attached to an external heatsink. The 1.0 °C/W junction-to-case thermal resistance assumes direct thermal contact; insufficient copper area will cause thermal saturation and reduced surge capability.
How does the e3 suffix in MAPLAD36KP40AE3 affect assembly and reliability?
The e3 suffix indicates RoHS-compliant matte-tin plating on MAPLAD36KP40AE3 terminals, qualified for lead-free reflow per JEDEC J-STD-020B Level 1 (no dry pack required). This plating ensures solderability in modern SMT lines while maintaining corrosion resistance and long-term intermetallic stability - critical for aerospace and automotive field life exceeding 15 years.
MAPLAD36KP40AE3 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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 559A
- 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
MAPLAD36KP40AE3 FAQ
1.How can I place an order for MAPLAD36KP40AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP40AE3 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 MAPLAD36KP40AE3 reliable?
The price and inventory of MAPLAD36KP40AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP40AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP40AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP40AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP40AE3?
MAPLAD36KP40AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP40AE3 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 MAPLAD36KP40AE3?
For technical support, including MAPLAD36KP40AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP40AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP40AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP40AE3 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 MAPLAD36KP40AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP40AE3?
All MAPLAD36KP40AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP40AE3, 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 MAPLAD36KP40AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP40AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP40AE3 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
