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Microchip Technology MAPLAD36KP20CAE3
- Part No.:
- MAPLAD36KP20CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP20CAE3.pdf
- Description:
- TVS DIODE 20VWM 34VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,381
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Product details
Overview
MAPLAD36KP20CAE3 from Microsemi is a bidirectional 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, clamps at ≤34.0 V @ 1059 A, and features a 20 V reverse standoff voltage (VWM), 22.2–24.5 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance.
For engineers reviewing the MAPLAD36KP20CAE3 datasheet, MAPLAD36KP20CAE3 pinout, MAPLAD36KP20CAE3 application, or MAPLAD36KP20CAE3 equivalent, key selection criteria include its DO-160F Waveform 4 Level 4 compliance, IEC 61000-4-5 Class 4 support with 42 Ω source impedance, and suitability for secondary lightning protection in avionics power distribution and engine control units.
Technical Context
This TVS diode operates as a voltage-clamping protector in parallel with sensitive circuitry, triggering when transient voltage exceeds its 20 V standoff rating. Its bidirectional construction enables symmetrical clamping for AC-coupled or floating signal/power lines, and its low RθJC of 1.0 °C/W supports high-reliability mounting on thermally optimized PCB pads per recommended layout.
It meets RTCA DO-160F Section 22 multi-stroke lightning requirements and provides ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and induced RFI suppression. The device is AEC-Q101 qualified and offers MIL-PRF-19500 upscreening options for extended reliability in harsh 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 failure under standard lightning waveform testing |
| Reverse Standoff Voltage (VWM) | 20 V - maximum continuous operating voltage before clamping initiates; matches 24 V nominal aircraft bus derated for transients |
| Breakdown Voltage (V(BR)) | 22.2–24.5 V @ 5 mA - ensures reliable turn-on margin above VWM while avoiding false triggering during normal operation |
| Clamping Voltage (VC) | 34.0 V @ 1059 A - limits downstream voltage stress to safe levels for 28 V system electronics during worst-case surge |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to heatsink or copper pour, critical for repeated surge duty cycles |
| Surge Current (IPP) | 1059 A @ 10/1000 μs - defines maximum single-event current handling capability per IEC 61000-4-5 test conditions |
| Temperature Coefficient (αV(BR)) | 18 mV/°C - quantifies V(BR) drift over temperature; used to validate clamping stability across -55°C to +150°C range |
Pinout & Package
The MAPLAD36KP20CAE3 uses a surface-mount PLAD package with metal base cathode contact (bidirectional symmetry eliminates anode/cathode distinction). Package dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), with void-free UL94V-0 epoxy body and matte-tin RoHS-compliant plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Anode-side pad) | AC input node / Line 1 | One side of bidirectional clamping path; connects to protected line (e.g., aircraft 28 V bus or sensor signal pair) |
| Terminal 2 (Cathode-side metal base) | AC return node / Line 2 | Second side of clamping path; electrically tied to metal base for low-inductance, low-resistance thermal and electrical path to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables symmetric transient suppression on AC-coupled or floating differential lines without polarity constraints |
| DO-160F Section 22 Waveform 4 Level 4 compliance | Validated for 6.4/69 μs pin-injection surges up to 25°C ambient - required for avionics flight-critical subsystems |
| IEC 61000-4-5 Class 4 support (42 Ω source) | Meets secondary lightning immunity for long-distance wiring harnesses in aircraft fuselage and wing sections |
| AEC-Q101 qualification | Confirms robustness against thermal cycling, mechanical shock, and humidity for automotive engine bay and chassis applications |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring lot traceability, 3σ ID screening, and conformance inspection per military standards |
Applications
| Avionics Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC bus inputs in flight management computers and remote data concentrators exposed to lightning-induced surges via airframe bonding paths. IC Role / Device Role / Timing Role: Bidirectional TVS placed at board-level entry point to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Limits clamped voltage to 34.0 V, ensuring downstream 40 V-rated MOSFETs and LDOs remain within safe operating area during DO-160F multi-stroke events. | Use Scenario: Surge protection for CAN FD and LIN communication lines and 12 V supply rails in under-hood ECUs subjected to load dump and alternator ripple. IC Role / Device Role / Timing Role: Parallel-connected TVS providing fast-response clamping (<5 ns response time) to suppress EFT bursts and switching spikes. Use Value: Withstands 1059 A peak current and maintains <10 μA standby leakage at 20 V, preserving battery life and signal integrity in always-on modules. |
| Industrial Motor Drive I/O | Railway Signaling Interface |
Use Scenario: Input protection for analog current-loop (4–20 mA) and digital I/O terminals in variable frequency drives exposed to inductive kickback and EMI coupling. IC Role / Device Role / Timing Role: Bidirectional TVS guarding isolated fieldbus interfaces (e.g., RS-485) against ground potential differences and surge coupling. Use Value: 1.0 °C/W RθJC allows direct thermal coupling to copper pour, enabling sustained operation at 0.05% duty cycle without derating in enclosed enclosures. | Use Scenario: Secondary surge protection for trackside signaling equipment connected to 75 V DC traction power lines vulnerable to lightning coupling from overhead catenary. IC Role / Device Role / Timing Role: Front-end TVS in multi-stage protection scheme, absorbing bulk energy before downstream MOVs and GDTs. Use Value: 36 kW PPP rating and 20 V VWM enable coordination with upstream 60 V gas discharge tubes for staged IEC 61000-4-5 Class 5 compliance in long-distance rail networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | 600 W PPP rating, 20 V VWM, SMB package with 35 V VC @ 32.4 A - 60× lower power handling than MAPLAD36KP20CAE3 | Intended for consumer-grade board-level ESD/EFT only; not rated for DO-160F or IEC 61000-4-5 Class 4 | Select only for cost-sensitive, non-safety-critical designs where surge energy is limited to <100 J |
| SMCJ20CA | 1500 W PPP rating, 20 V VWM, SMC package with 32.4 V VC @ 46.7 A - 24× lower power than MAPLAD36KP20CAE3 | Used in industrial PLC I/O modules; lacks DO-160F validation and AEC-Q101 qualification | Acceptable for non-avionic industrial use with verified surge profiles below 1 kA, but not for certified aerospace platforms |
Compared with SMBJ20CA and SMCJ20CA, the MAPLAD36KP20CAE3 delivers 36 kW surge capacity, DO-160F Waveform 4 Level 4 certification, and AEC-Q101 qualification - making it uniquely suitable for primary lightning protection in flight-critical avionics and high-reliability automotive power systems where multi-kA transient immunity is mandatory.
Availability
MAPLAD36KP20CAE3 is available at Aetrix Electronics and suitable for avionics power distribution, automotive engine control units, and industrial motor drive I/O requiring stable component supply across extended production lifecycles.
Supply support for MAPLAD36KP20CAE3 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, mixed-signal, and radiation-hardened ICs for aerospace, defense, and industrial markets.
The MAPLAD36KP20CAE3 belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning protection and DO-160F compliance in safety-critical airborne electronics.
FAQ
What is the clamping voltage of MAPLAD36KP20CAE3 at its rated peak pulse current?
The MAPLAD36KP20CAE3 has a maximum clamping voltage (VC) of 34.0 V at its rated peak pulse current of 1059 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and ensures downstream components see controlled overvoltage during surge events. The MAPLAD36KP20CAE3 maintains this clamping performance across its specified operating temperature range of –55°C to +150°C.
Is MAPLAD36KP20CAE3 certified for DO-160F Section 22 lightning testing?
Yes, the MAPLAD36KP20CAE3 is validated for RTCA DO-160F Section 22 Waveform 4 (6.4/69 μs) at Level 4 and Waveform 5A (40/120 μs) at Level 4 up to 300 V VWM. Its 36 kW rating and low clamping voltage make it suitable for multi-stroke lightning protection in avionics. The MAPLAD36KP20CAE3 achieves this through optimized silicon geometry and low-inductance PLAD packaging, as confirmed in Microsemi Application Note AN-132.
Does MAPLAD36KP20CAE3 require a heatsink for standard operation?
No external heatsink is required for single-event surge operation due to its 1.0 °C/W junction-to-case thermal resistance and metal-base package design. However, for repetitive surges at >0.05% duty factor, thermal management via PCB copper pour per the recommended pad layout (Ref. RF01216, page 6) is essential. The MAPLAD36KP20CAE3 relies on direct conduction from its metal base into the PCB, not ambient convection.
What is the polarity configuration of MAPLAD36KP20CAE3, and how does it affect PCB layout?
The MAPLAD36KP20CAE3 is a bidirectional TVS, indicated by the "CA" suffix, meaning it provides symmetrical clamping for both positive and negative transients without polarity sensitivity. Unlike unidirectional versions, it has no marked cathode; both terminals are functionally identical. Therefore, PCB layout requires no orientation alignment - the MAPLAD36KP20CAE3 can be placed in either direction across protected lines.
How does MAPLAD36KP20CAE3 compare to standard SMCJ20CA in terms of surge capability?
The MAPLAD36KP20CAE3 delivers 36,000 W peak pulse power - 24 times higher than the 1500 W rating of SMCJ20CA - and handles 1059 A versus 46.7 A. Its PLAD package offers 1.0 °C/W thermal resistance versus ~3.5 °C/W for SMC, enabling superior energy dissipation. While both share 20 V VWM, only the MAPLAD36KP20CAE3 is qualified to DO-160F and IEC 61000-4-5 Class 4, making it appropriate for certified aerospace use where the SMCJ20CA is not.
MAPLAD36KP20CAE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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
MAPLAD36KP20CAE3 FAQ
1.How can I place an order for MAPLAD36KP20CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP20CAE3 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 MAPLAD36KP20CAE3 reliable?
The price and inventory of MAPLAD36KP20CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP20CAE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP20CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP20CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP20CAE3?
MAPLAD36KP20CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP20CAE3 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 MAPLAD36KP20CAE3?
For technical support, including MAPLAD36KP20CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP20CAE3 requirements.
6.How does Aetrix verify that MAPLAD36KP20CAE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP20CAE3 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 MAPLAD36KP20CAE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP20CAE3?
All MAPLAD36KP20CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP20CAE3, 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 MAPLAD36KP20CAE3 part is unused and in its original packaging.
Return procedure for MAPLAD36KP20CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP20CAE3 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
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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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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