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Microchip Technology MAPLAD36KP36AE3
- Part No.:
- MAPLAD36KP36AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP36AE3.pdf
- Description:
- TVS DIODE 36VWM 58.1VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,710
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Product details
Overview
MAPLAD36KP36AE3 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 36,000 W peak pulse power at 10/1000 μs, clamps at ≤58.1 V under 620 A peak impulse current, and features a 36 V reverse standoff voltage (VWM) with 40.0–44.2 V breakdown range. It meets RTCA DO-160 Section 22 multi-stroke lightning requirements and IEC 61000-4-5 Class 5 secondary lightning protection with 42 Ω source impedance.
For engineers reviewing the MAPLAD36KP36AE3 datasheet, MAPLAD36KP36AE3 pinout, MAPLAD36KP36AE3 application, or MAPLAD36KP36AE3 equivalent, this device is selected for high-reliability DC bus protection where low thermal resistance, RoHS-compliant packaging, and verified surge testing per AEC-Q101 are mandatory - especially in avionics power distribution units and 24/28 V vehicle load-dump circuits.
Technical Context
This TVS diode uses a planar junction silicon structure optimized for rapid response (<100 ps clamping delay) and low dynamic impedance to limit voltage overshoot during fast transients like EFT and ESD. Its metal-base cathode construction enables direct thermal coupling to PCB copper or heatsinks, achieving 1.0 °C/W junction-to-case thermal resistance.
It operates across –55 °C to +150 °C junction temperature, supports steady-state dissipation up to 71 W at TC = 100 °C, and maintains stable V(BR) with a +0.038 %/°C temperature coefficient - critical for consistent clamping performance over wide ambient ranges in engine bay or flight deck environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains full-rated surge energy without degradation in single-event or low-duty-cycle (≤0.05%) applications |
| Reverse Standoff Voltage (VWM) | 36 V - maximum continuous DC or peak AC voltage the device blocks without conduction; matches nominal 28 V aircraft bus systems |
| Breakdown Voltage (V(BR)) | 40.0–44.2 V @ 5 mA - ensures reliable turn-on before downstream component damage thresholds are exceeded |
| Max Clamping Voltage (VC) | 58.1 V @ 620 A - limits transient voltage seen by protected ICs or MOSFETs to safe levels during worst-case surges |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables effective heat transfer to external heatsink or large copper pour, critical for repeated surge handling |
| Steady-State Power Dissipation | 71 W @ TC = 100 °C - supports continuous power handling when mounted on thermally optimized PCB or heatsink |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - eliminates dry-pack requirement and bake-out prior to reflow, simplifying SMT assembly |
Pinout & Package
MAPLAD36KP36AE3 uses a surface-mount PLAD package with a metal base acting as the cathode terminal. The package measures 12.32 × 10.54 × 5.08 mm (L × W × H), features void-free UL94V-0 epoxy molding, and employs annealed matte-tin plating for solderability per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom Surface) | Cathode | Primary current path and thermal interface - must be soldered to large copper area or heatsink for thermal management |
| Top Metal Pad | Anode | Signal/power input node - connects to line being protected; polarity marking on body confirms unidirectional orientation |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Peak Pulse Rating | Validated at 10/1000 μs waveform - provides margin against lightning-induced transients per RTCA DO-160F Waveform 4 and 5A |
| AEC-Q101 Qualified | Tested per stress conditions for automotive-grade reliability - suitable for under-hood and chassis-mounted power electronics |
| RoHS Compliant (e3) | Lead-free matte-tin plating - meets global environmental compliance without sacrificing solder joint integrity or thermal performance |
| Low Thermal Resistance | 1.0 °C/W RθJC - enables >70 W steady-state dissipation when properly heatsunk, reducing need for oversized PCB copper |
| IEC 61000-4-2/4-4/4-5 Certified | ESD (±15 kV air), EFT (±2 kV), and lightning surge (Class 5, 42 Ω) protection - eliminates need for additional discrete protection stages |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: Protection of 28 V DC bus in commercial aircraft avionics bays exposed to multi-stroke lightning per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary clamping device placed at bus entry point to shunt surge current away from downstream DC-DC converters and flight control modules. Use Value: Limits transient voltage to ≤58.1 V during 620 A surges, preserving functional safety integrity of ASIL-D subsystems without derating. |
Use Scenario: Guarding engine control unit (ECU) inputs against 12 V/24 V battery load dump events per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between alternator output and ECU power rail to clamp voltage spikes within 100 ps. Use Value: Withstands 36 kW surges while maintaining <10 μA standby leakage at 36 V, preventing false resets or sensor drift during normal operation. |
| Industrial Motor Drive DC Link | Railway Signaling Power Supply |
Use Scenario: Surge suppression on DC link capacitors in variable-frequency drives subjected to switching transients and induced RFI. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing repetitive 10/1000 μs transients generated by IGBT commutation and contactor bounce. Use Value: 1.0 °C/W thermal resistance allows sustained operation at 0.05% duty cycle without thermal runaway, extending system uptime. |
Use Scenario: Protecting 72 V signaling power supplies in European railway interlocking systems compliant with EN 50121-3-2. IC Role / Device Role / Timing Role: Secondary lightning protector installed upstream of DC/DC isolation modules to meet Class 4 immunity with 12 Ω source impedance. Use Value: Clamps to 58.1 V at 620 A, ensuring downstream isolated converters remain within absolute maximum ratings during surge events. |
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 SMAJ36A | Lower PPP rating (400 W), smaller SMA package, higher RθJA (65 °C/W), no AEC-Q101 or DO-160 qualification | Suitable only for low-energy consumer-grade surges; not rated for aviation or automotive load dump | Select only for cost-sensitive, non-safety-critical 36 V DC circuits with minimal surge exposure |
| Vishay V26MLA0603NH | MLV-based (not silicon diode), 26 V VWM, 100 J energy rating, slower response (>500 ps), no DO-160 validation | Used in telecom power supplies; lacks precision clamping and thermal stability for aerospace use | Prefer for lower-cost, lower-precision industrial applications where exact VWM matching and fast clamping are not required |
Compared with SMAJ36A and V26MLA0603NH, MAPLAD36KP36AE3 delivers 90× higher peak power, certified multi-stroke lightning resilience, and thermal design enabling integration into high-reliability power rails - making it irreplaceable in avionics and mission-critical automotive systems.
Availability
MAPLAD36KP36AE3 is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive DC link applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAPLAD36KP36AE3 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, mixed-signal, and radiation-hardened solutions for aerospace, defense, and industrial markets.
The PLAD series was developed specifically for high-power, surface-mount transient suppression in harsh-environment platforms where thermal management, surge repeatability, and qualification to DO-160 and AEC-Q101 are mandatory.
FAQ
What is the clamping voltage of MAPLAD36KP36AE3 at its rated peak pulse current?
The MAPLAD36KP36AE3 has a maximum clamping voltage (VC) of 58.1 V at 620 A peak pulse current under 10/1000 μs waveform conditions. This value is measured per standard test methods and guarantees that protected circuitry will not experience voltages exceeding this threshold during worst-case surge events, ensuring compatibility with 36 V-rated downstream components.
Is MAPLAD36KP36AE3 qualified to AEC-Q101 and RTCA DO-160 standards?
Yes, MAPLAD36KP36AE3 is tested in accordance with AEC-Q101 requirements for automotive-grade reliability and validated for RTCA DO-160F Section 22 multi-stroke lightning immunity. It meets Waveform 4 (6.4/69 μs) Level 5 and Waveform 5A (40/120 μs) Level 4 protection thresholds, confirming suitability for both automotive and certified aircraft systems.
How does the PLAD package of MAPLAD36KP36AE3 improve thermal performance compared to standard SMD TVS diodes?
The MAPLAD36KP36AE3 uses a metal-base PLAD package where the cathode forms the entire bottom surface, enabling direct thermal conduction to PCB copper or external heatsinks. With a junction-to-case thermal resistance of just 1.0 °C/W - far lower than typical SMA or SMC packages - it supports 71 W steady-state dissipation at TC = 100 °C, reducing thermal derating in high-power surge scenarios.
What is the meaning of the "E3" suffix in MAPLAD36KP36AE3?
The "E3" suffix in MAPLAD36KP36AE3 indicates RoHS-compliant matte-tin plating per JEDEC J-STD-020B Level 1 moisture sensitivity. This ensures lead-free assembly compatibility, eliminates dry-pack requirements, and maintains solderability and thermal interface integrity without compromising surge robustness or long-term reliability in demanding environments.
Can MAPLAD36KP36AE3 be used in bidirectional configurations?
No, MAPLAD36KP36AE3 is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix and absence of bidirectional marking. For bidirectional operation at 36 V standoff, the correct variant is MAPLAD36KP36CA. Using MAPLAD36KP36AE3 in AC or reversible-polarity circuits would result in forward conduction and failure during negative transients.
MAPLAD36KP36AE3 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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 620A
- 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
MAPLAD36KP36AE3 FAQ
1.How can I place an order for MAPLAD36KP36AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP36AE3 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 MAPLAD36KP36AE3 reliable?
The price and inventory of MAPLAD36KP36AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP36AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP36AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP36AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP36AE3?
MAPLAD36KP36AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP36AE3 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 MAPLAD36KP36AE3?
For technical support, including MAPLAD36KP36AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP36AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP36AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP36AE3 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 MAPLAD36KP36AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP36AE3?
All MAPLAD36KP36AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP36AE3, 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 MAPLAD36KP36AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP36AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP36AE3 Tags
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