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Microchip Technology MAPLAD36KP14CA
- Part No.:
- MAPLAD36KP14CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP14CA.pdf
- Description:
- TVS DIODE 14VWM 24VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:7,409
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Product details
Overview
MAPLAD36KP14CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36,000 W peak pulse power at 10/1000 μs, features a 14 V reverse standoff voltage (VWM), clamps to ≤24.0 V at 3000 A IPP, and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MAPLAD36KP14CA datasheet, MAPLAD36KP14CA pinout, MAPLAD36KP14CA application, or MAPLAD36KP14CA equivalent, key selection criteria include bidirectional polarity, low thermal resistance (RθJC = 1.0 °C/W), IEC 61000-4-5 Class 5 compliance with 42 Ω source impedance, and RoHS-compliant e3 termination plating.
Technical Context
The MAPLAD36KP14CA operates as a silicon avalanche diode-based TVS, leveraging controlled breakdown to divert transients away from sensitive circuitry. Its bidirectional construction enables symmetrical clamping for AC-coupled or floating signal lines, and its low RθJC ensures effective heat transfer to the PCB copper pad under repetitive surge conditions.
It supports secondary lightning protection per IEC 61000-4-5 across multiple source impedances (2 Ω, 12 Ω, 42 Ω), with verified Class 3–5 performance up to 14 V standoff. Pin injection immunity per RTCA/DO-160F Waveform 4 (Level 4) and Waveform 5A (Level 4 up to 78 V) confirms suitability for avionics interface protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains single-stroke lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 14 V - maximum continuous operating voltage before conduction begins |
| Clamping Voltage (VC) | ≤24.0 V @ 3000 A IPP - limits downstream voltage stress during surge events |
| Breakdown Voltage (V(BR)) | 15.6–17.2 V @ 5 mA - defines precise avalanche initiation threshold |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB copper pad for thermal reliability |
| Surge Current (IPP) | 3000 A @ 10/1000 μs - quantifies maximum transient current handling capability |
| Polarity | Bidirectional - provides symmetrical overvoltage protection on AC or floating lines |
| RoHS Compliance | e3 matte-tin plating - satisfies environmental compliance without lead content |
Pinout & Package
MAPLAD36KP14CA uses a surface-mount PLAD package with metal base cathode contact. The device has two terminals: anode and cathode, with polarity marked only on unidirectional variants; bidirectional versions (CA suffix) have no polarity marking and function identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during positive surge | Connects to protected line; forms one side of symmetrical clamping path |
| Cathode | Current return path during positive surge; current entry during negative surge | Mounted to large copper pad for thermal dissipation; serves as primary heat sink interface |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping architecture | Enables protection of AC-coupled interfaces (e.g., RS-485, CAN, Ethernet PHY) without polarity concerns |
| Low RθJC (1.0 °C/W) | Allows sustained surge duty cycles with minimal junction temperature rise when mounted per recommended pad layout |
| RTCA DO-160F Waveform 4 Level 4 compliance | Validated for pin-injection lightning transients (6.4/69 μs) in aircraft avionics busses |
| IEC 61000-4-5 Class 5 support (42 Ω) | Meets highest secondary lightning immunity requirement for short-distance aircraft wiring |
| Void-free UL94V-0 epoxy body | Provides mechanical robustness and flame resistance in high-vibration aerospace environments |
Applications
| Aerospace Avionics Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting ARINC 429 or MIL-STD-1553 data bus receivers from induced lightning transients in aircraft fuselage wiring. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed at bus connector interface to shunt surge energy before it reaches receiver IC inputs. Use Value: Prevents latch-up or permanent damage to bus transceivers during DO-160 Section 22 multi-stroke testing with <100 ns response time. | Use Scenario: Safeguarding engine control unit (ECU) power inputs against 12 V system load dump events (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Primary high-power surge clamp on main 12 V rail, positioned upstream of DC/DC converters and LDOs. Use Value: Absorbs 36 kW peak energy without degradation, maintaining VWM = 14 V to avoid false triggering during normal 13.5 V nominal operation. |
| Industrial Motor Drive I/O Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding encoder feedback lines and analog sensor inputs in variable-frequency drives exposed to switching-induced RFI. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential-pair across encoder A/B channels to suppress common-mode transients. Use Value: Clamps to ≤24.0 V while preserving signal integrity up to 1 MHz due to low capacitance and fast <5 ns response. | Use Scenario: Securing EIA-485 communication links between trackside signaling controllers and centralized interlocking systems. IC Role / Device Role / Timing Role: Line-end TVS on RS-485 transceiver bus terminals to meet EN 50121-4 lightning immunity requirements. Use Value: Delivers Class 4 IEC 61000-4-5 protection (12 Ω source) with 3000 A IPP rating, ensuring uptime in outdoor rail infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14CA | 600 W PPP rating, SMB package, RθJC ≈ 15 °C/W | Limited to low-energy transients; unsuitable for DO-160 lightning or automotive load dump | Select only for cost-sensitive consumer-grade designs with sub-1 kA surge exposure |
| SMCJ14CA | 1500 W PPP rating, SMC package, RθJC ≈ 3.5 °C/W | Supports moderate industrial surges but lacks DO-160F Waveform 4 Level 4 validation | Use where IEC 61000-4-5 Class 3 suffices and PCB space allows larger SMC footprint |
Compared with SMBJ14CA and SMCJ14CA, the MAPLAD36KP14CA provides 24× and 24× higher peak pulse power respectively, validated clamping performance under aviation lightning standards, and superior thermal management-making it the sole option for mission-critical aerospace and heavy-duty automotive surge protection.
Availability
MAPLAD36KP14CA is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power rails, and industrial motor drive I/O requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MAPLAD36KP14CA 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 MAPLAD36KP14CA belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection in safety-critical airborne systems and harsh-environment vehicle electronics.
FAQ
What is the clamping voltage of MAPLAD36KP14CA at its rated peak pulse current?
The MAPLAD36KP14CA has a maximum clamping voltage (VC) of 24.0 V when subjected to its rated peak pulse current of 3000 A under 10/1000 μs waveform conditions. This value is measured across the device terminals and guarantees downstream circuit protection by limiting transient overvoltage to a safe level compatible with 15 V-rated components. The MAPLAD36KP14CA maintains this clamping performance consistently across its qualified operating temperature range.
Is MAPLAD36KP14CA certified for RTCA DO-160 lightning testing?
Yes, the MAPLAD36KP14CA is explicitly validated for RTCA DO-160 Section 22 multi-stroke lightning testing. It meets Waveform 4 (6.4/69 μs) Level 4 and Waveform 5A (40/120 μs) Level 4 requirements at 25°C, as confirmed in Microsemi's RF01216 Rev B datasheet. The MAPLAD36KP14CA's bidirectional architecture and low clamping voltage ensure reliable protection of avionics interfaces without polarity constraints.
Does MAPLAD36KP14CA require a heatsink for standard operation?
No external heatsink is required for MAPLAD36KP14CA under typical single-pulse or low-duty-cycle surge conditions. Its 1.0 °C/W junction-to-case thermal resistance is designed to dissipate heat directly into a properly sized PCB copper pad per the documented pad layout. However, for repetitive surge applications exceeding 0.05% duty factor, thermal derating per Figure 3 in the MAPLAD36KP14CA datasheet must be applied to maintain safe junction temperature.
What is the polarity configuration of MAPLAD36KP14CA?
The MAPLAD36KP14CA is a bidirectional TVS diode, indicated by the "CA" suffix in its part number. Unlike unidirectional variants (e.g., MPLAD36KP14A), it provides symmetrical clamping for both positive and negative transients and has no polarity marking on the package. The MAPLAD36KP14CA functions identically regardless of orientation on the PCB, simplifying layout for AC-coupled or floating signal lines.
How does MAPLAD36KP14CA compare to standard SMCJ-series TVS diodes in surge handling?
The MAPLAD36KP14CA delivers 36,000 W peak pulse power-24 times higher than the 1500 W rating of SMCJ14CA-enabling it to absorb full lightning strokes that would destroy conventional TVS devices. Its lower RθJC (1.0 vs. ~3.5 °C/W) and validated DO-160F compliance make the MAPLAD36KP14CA uniquely suited for aerospace and automotive applications where SMCJ14CA offers insufficient energy capacity and lacks certification for critical surge standards.
MAPLAD36KP14CA 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 1500A (1.5kA)
- 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
MAPLAD36KP14CA FAQ
1.How can I place an order for MAPLAD36KP14CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP14CA 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 MAPLAD36KP14CA reliable?
The price and inventory of MAPLAD36KP14CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP14CA is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP14CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP14CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP14CA?
MAPLAD36KP14CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP14CA 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 MAPLAD36KP14CA?
For technical support, including MAPLAD36KP14CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP14CA requirements.
6.How does Aetrix verify that MAPLAD36KP14CA is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP14CA 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 MAPLAD36KP14CA meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP14CA?
All MAPLAD36KP14CA units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP14CA, 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 MAPLAD36KP14CA part is unused and in its original packaging.
Return procedure for MAPLAD36KP14CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP14CA 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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