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Microchip Technology MAPLAD36KP20AE3
- Part No.:
- MAPLAD36KP20AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP20AE3.pdf
- Description:
- TVS DIODE 20VWM 34VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:8,074
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Product details
Overview
MAPLAD36KP20AE3 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 20 V reverse standoff voltage (VWM), clamps to ≤34.0 V at 1059 A peak pulse current (IPP), and operates across –55°C to +150°C junction temperature. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP20AE3 datasheet, MAPLAD36KP20AE3 pinout, MAPLAD36KP20AE3 application, or MAPLAD36KP20AE3 equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, 2 Ω source impedances), pin injection protection per RTCA/DO-160F Waveform 4 & 5A, and ESD/EFT immunity per IEC 61000-4-2/4-4 - critical for avionics power rails and vehicle ECUs.
Technical Context
This TVS diode uses silicon avalanche technology with low thermal resistance (RθJC = 1.0 °C/W) to dissipate high-energy transients without thermal runaway. Its metal-base cathode construction enables efficient heat transfer to PCB copper pads or heatsinks, supporting repetitive surge duty cycles ≤0.05%.
It is characterized for bidirectional variants (CA suffix) but MAPLAD36KP20AE3 is unidirectional, with polarity defined by cathode on the metal base underside. Clamping response time is <100 ps, enabling protection against fast-rising transients such as ESD and inductive switching spikes.
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) | 20 V - matches nominal 12–16 V automotive or avionics bus operating voltages |
| Clamping Voltage (VC) | 34.0 V max @ IPP = 1059 A - limits downstream IC stress below 36 V absolute maximum ratings |
| Peak Pulse Current (IPP) | 1059 A @ 10/1000 μs - exceeds DO-160F Level 4 pin injection (Waveform 4) requirements |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct thermal coupling to PCB ground plane or heatsink for sustained multi-stroke operation |
| Operating Temperature Range | –55°C to +150°C - supports engine bay, avionics bay, and under-hood deployment |
| RoHS Compliance | e3 marking - lead-free matte-tin plating compliant with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity |
Pinout & Package
MAPLAD36KP20AE3 uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.08 mm), metal base cathode terminal, and tin-lead or RoHS-compliant matte-tin plating. The cathode is the entire metal underside of the package; no discrete pins are present - it is a two-terminal device with anode (top surface metallization) and cathode (bottom metal base).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top metallization) | Transient current entry point for positive surges | Connected to protected line (e.g., 12 V rail); current flows into device during overvoltage |
| Cathode (metal base) | Current return path and primary thermal interface | Must be soldered to large copper pad or heatsink; serves as both electrical return and thermal conduction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics reliability including temperature cycling, HTRB, and surge endurance |
| RTCA DO-160F Section 22 compliance | Proven multi-stroke lightning survivability - essential for certified avionics equipment |
| Low RθJC = 1.0 °C/W | Enables >2× higher thermal power handling vs. standard SMC packages under identical PCB layout |
| IEC 61000-4-2/4-4/4-5 certified | Provides system-level immunity to ESD (±8 kV contact), EFT (±2 kV), and surge (42 Ω, 12 Ω, 2 Ω sources) |
| Moisture Sensitivity Level 1 | No dry-pack or baking required before reflow - simplifies manufacturing and reduces cost |
Applications
| Avionics Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC power inputs in flight control computers subjected to DO-160F lightning-induced transients. IC Role / Device Role / Timing Role: Primary secondary surge clamp on main power rail, triggered within <100 ps to limit voltage excursion. Use Value: Prevents latch-up or burnout of upstream DC/DC converters and microcontrollers during multi-stroke lightning events. |
Use Scenario: Load dump suppression on 12 V supply lines feeding engine management ECUs in vehicles with alternator regulation failure. IC Role / Device Role / Timing Role: High-power TVS placed at ECU input connector to absorb ISO 7637-2 Pulse 5a/b energy (up to 120 V, 400 ms). Use Value: Maintains ECU functionality during 120 V/350 ms load dump events without requiring oversized capacitors or active clamps. |
| Industrial Motor Drive DC Bus | Railway Signaling Power Input |
Use Scenario: Surge protection on 48 V DC bus inputs of variable-frequency drives exposed to inductive switching noise and nearby lightning. IC Role / Device Role / Timing Role: Fast-clamping TVS parallel to bus capacitor, activated before bus overvoltage triggers shutdown logic. Use Value: Reduces false trips and extends capacitor life by limiting transient overvoltage to ≤34 V during 1059 A surges. |
Use Scenario: Secondary protection on 72 V DC signaling power supplies in trackside cabinets subject to induced surges from adjacent traction currents. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 20 V) used in series with DC-DC converter input to meet EN 50121-4 surge immunity. Use Value: Enables compliance with Class 3/4 IEC 61000-4-5 (42 Ω source) without derating or parallel staging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Lower PPP (600 W), smaller SMB package, RθJA = 50 °C/W, no AEC-Q101 or DO-160 qualification | Suitable only for consumer-grade single-stroke ESD/EFT; insufficient for automotive load dump or aviation lightning | Select only for cost-sensitive, non-safety-critical 12 V circuits with <100 A surge exposure |
| SMCJ20A | PPP = 1500 W, larger SMC package, RθJC ≈ 2.5 °C/W, AEC-Q101 qualified but not DO-160 tested | Meets ISO 7637-2 Pulse 5 but lacks multi-stroke validation for airborne systems | Preferred for automotive Tier 2 suppliers needing AEC-Q101 and moderate surge margin, but not for DO-160-certified designs |
Compared with SMBJ20A and SMCJ20A, MAPLAD36KP20AE3 delivers 24× and 24× higher peak pulse power respectively, with validated multi-stroke lightning performance, lower thermal resistance, and full DO-160F/IEC 61000-4-5 coverage - making it the only option for certified avionics and high-reliability automotive power rail protection.
Availability
MAPLAD36KP20AE3 is available at Aetrix Electronics and suitable for avionics power distribution, automotive ECU protection, industrial motor drive DC buses, and railway signaling power inputs requiring stable component supply across extended product lifecycles.
Supply support for MAPLAD36KP20AE3 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 MAPLAD36KP20AE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning and load dump protection in safety-critical platforms where thermal robustness and qualification traceability are mandatory.
FAQ
What is the clamping voltage of MAPLAD36KP20AE3 at its rated peak pulse current?
The MAPLAD36KP20AE3 has a maximum clamping voltage (VC) of 34.0 V when subjected to its rated peak pulse current of 1059 A under 10/1000 μs waveform conditions. This value is measured at the device terminals and ensures downstream components see voltage limited below typical 36 V absolute maximum ratings, preserving system reliability during surge events.
Is MAPLAD36KP20AE3 qualified for automotive applications?
Yes, MAPLAD36KP20AE3 is AEC-Q101 qualified, having undergone stress testing including temperature cycling, highly accelerated life testing (HALT), and surge endurance. It is designed for automotive engine control units, battery management systems, and ADAS power rails where load dump and ISO 7637-2 compliance are required.
How does the PLAD package of MAPLAD36KP20AE3 improve thermal performance?
The MAPLAD36KP20AE3 uses a metal-base PLAD package with RθJC = 1.0 °C/W, allowing direct thermal conduction from the junction to the PCB copper pour or external heatsink. This is over 2× better than standard SMC packages and enables reliable multi-stroke operation without thermal saturation during repeated lightning transients.
Does MAPLAD36KP20AE3 meet RTCA DO-160F lightning protection standards?
Yes, MAPLAD36KP20AE3 is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing. It meets Level 4 pin injection (Waveform 4, 6.4/69 μs) up to 300 V VWM and Level 4 Waveform 5A (40/120 μs) up to 78 V VWM - making it suitable for certified avionics equipment power inputs.
What is the polarity configuration and mounting orientation for MAPLAD36KP20AE3?
MAPLAD36KP20AE3 is unidirectional, with the cathode located on the entire metal base underside of the package. The anode is the top metallized surface. Correct orientation requires the metal base to be soldered to a designated cathode copper pad - reversal will prevent proper clamping and may cause catastrophic failure during surge events.
MAPLAD36KP20AE3 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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 34V
- Current - Peak Pulse (10/1000µs):
- 1059A (1.059kA)
- 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
MAPLAD36KP20AE3 FAQ
1.How can I place an order for MAPLAD36KP20AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP20AE3 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 MAPLAD36KP20AE3 reliable?
The price and inventory of MAPLAD36KP20AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP20AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP20AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP20AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP20AE3?
MAPLAD36KP20AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP20AE3 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 MAPLAD36KP20AE3?
For technical support, including MAPLAD36KP20AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP20AE3 requirements.
6.How does Aetrix verify that MAPLAD36KP20AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP20AE3 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 MAPLAD36KP20AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP20AE3?
All MAPLAD36KP20AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP20AE3, 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 MAPLAD36KP20AE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP20AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP20AE3 Tags
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