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Microchip Technology MAPLAD36KP14A
- Part No.:
- MAPLAD36KP14A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD36KP14A.pdf
- Description:
- TVS DIODE 14VWM 24VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,855
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Product details
Overview
MPLAD36KP14A 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, clamps transients to ≤24.0 V at 3000 A, and features a 14 V reverse standoff voltage (VWM), 15.6–17.2 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance - enabling robust secondary lightning protection per RTCA DO-160 Section 22 and IEC 61000-4-5.
For engineers reviewing the MPLAD36KP14A datasheet, MPLAD36KP14A pinout, MPLAD36KP14A application, or MPLAD36KP14A equivalent, key selection criteria include its 36 kW surge rating, low-profile PLAD package with metal-base cathode, unidirectional polarity, compliance with AEC-Q101 and MIL-PRF-19500 screening options, and verified performance under multi-stroke lightning waveforms (Waveform 4 & 5A) and ESD/EFT per IEC 61000-4-2/4-4.
Technical Context
The MPLAD36KP14A employs an avalanche diode structure optimized for fast response (<100 ps clamping delay) and high cumulative energy handling. Its metal-base thermal path achieves 1.0 °C/W RθJC, enabling effective heat dissipation when mounted on FR4 with recommended pad layout - critical for sustained multi-pulse operation in aircraft avionics power rails.
It meets RTCA DO-160F Level 4 pin injection immunity (6.4/69 μs) and Level 4 waveform 5A (40/120 μs) up to 78 A and 38 A respectively, with derating guidance provided in MicroNote 132. Standby current ID is ≤5 μA at VWM, and temperature coefficient αV(BR) is +10 mV/°C - ensuring stable clamping across -55°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 14 V - matches nominal 12 V automotive and avionics bus systems |
| Breakdown Voltage (V(BR)) | 15.6–17.2 V @ 5 mA - ensures reliable turn-on before system overvoltage damage |
| Max Clamping Voltage (VC) | 24.0 V @ 3000 A - limits downstream IC stress during worst-case transients |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables direct thermal coupling to heatsink or PCB copper for multi-stroke duty |
| Standby Current (ID) | ≤5 μA @ VWM - negligible leakage in always-on power monitoring circuits |
| Clamping Response Time | <100 ps - protects sensitive analog and digital circuitry from nanosecond-scale transients |
Pinout & Package
Package: PLAD (Plastic Low-profile Anode-down), void-free UL94V-0 epoxy body with tin-lead or RoHS-compliant matte-tin plating; cathode is the metal base (bottom side); weight ≈1.7–2.0 g; dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Top Surface Pad) | Positive input terminal | Soldered to protected line; forms forward-biased path during negative transients |
| Cathode (Metal Base) | Ground reference / return path | Direct thermal and electrical connection to PCB ground plane or heatsink |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Peak Pulse Power | Enables single-device compliance with RTCA DO-160 Section 22 multi-stroke lightning testing |
| Low RθJC (1.0 °C/W) | Supports >0.05% impulse repetition rate without thermal runaway on standard FR4 |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for SMT assembly |
| AEC-Q101 Qualified | Validated for automotive power electronics including engine control and battery management |
| RoHS Compliant (e3) | Meets global environmental regulations without compromising surge performance |
Applications
| Aircraft Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC power distribution units in commercial aircraft against induced lightning currents per DO-160F Section 22. IC Role / Device Role / Timing Role: Primary secondary surge clamp on main bus feeders, placed upstream of DC-DC converters and flight control modules. Use Value: Withstands ≥3000 A peak pulses at 24.0 V clamping, preventing latch-up or burnout in downstream ASICs and FPGAs. |
Use Scenario: Safeguarding engine control units (ECUs) during alternator load dump events in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input, absorbing 120 V/400 ms transients. Use Value: 14 V VWM aligns with nominal 12 V system; 36 kW rating handles worst-case ISO 7637-2 Pulse 5a without degradation. |
| Industrial Motor Drive DC Link Protection | Railway Signaling Power Interface |
Use Scenario: Shielding gate drivers and current sensors on 48 V DC link of variable-frequency drives from switching-induced transients. IC Role / Device Role / Timing Role: Fast-clamping TVS across DC+ and DC− rails, triggered by IGBT commutation spikes. Use Value: Sub-100 ps response ensures clamping occurs before 50 ns rise-time transients exceed MOSFET VDS ratings. |
Use Scenario: Securing 72 V signaling interfaces in train control systems against EFT bursts and lightning-coupled surges per EN 50121-3-2. IC Role / Device Role / Timing Role: Bidirectional-capable variant (MPLAD36KP14CA) used in full-duplex communication ports with common-mode surge suppression. Use Value: 24.0 V clamping at 3000 A maintains signal integrity while meeting Class 4 immunity requirements with 42 Ω source impedance. |
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 SMAJ14A | 600 W PPP rating, SMA package, 23.2 V max clamping @ 22.5 A - 60× lower energy capacity | Targeted at consumer electronics; insufficient for DO-160 or ISO 7637-2 compliance | Select only for cost-sensitive, low-energy board-level ESD protection where 36 kW capability is unnecessary |
| Vishay V26MLA0603NH | Multi-layer varistor, 120 J energy rating, 26 V VWM, but slower response (>1 ns) and no AEC-Q101 qualification | Used in telecom power supplies; lacks RTCA DO-160 waveform validation and thermal robustness | Consider only for non-safety-critical industrial AC/DC inputs where nanosecond clamping is not required |
Compared with SMAJ14A and V26MLA0603NH, the MPLAD36KP14A provides 60× higher peak power, sub-100 ps response, AEC-Q101 and DO-160 qualification, and metal-base thermal design - making it uniquely suitable for aerospace and high-reliability automotive surge protection where single-event survivability is mandatory.
Availability
MPLAD36KP14A is available at Aetrix Electronics and suitable for aircraft avionics, automotive ECU power conditioning, and industrial motor drive DC link protection requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MPLAD36KP14A 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 MPLAD36KP14A belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for multi-stroke lightning protection in safety-critical airborne and vehicular power systems - emphasizing thermal robustness, waveform-specific validation, and extended temperature reliability.
FAQ
What is the maximum clamping voltage of the MPLAD36KP14A at its rated peak pulse current?
The MPLAD36KP14A has a maximum clamping voltage (VC) of 24.0 V at 3000 A peak pulse current under 10/1000 μs waveform conditions. This value is guaranteed per datasheet Figure 3 and ensures downstream components remain within safe operating voltage margins during severe transients. The MPLAD36KP14A achieves this clamping level while maintaining sub-100 ps response time and 1.0 °C/W thermal resistance - critical for high-reliability applications.
Is the MPLAD36KP14A qualified for automotive applications per AEC-Q101?
Yes, the MPLAD36KP14A is explicitly tested and qualified to AEC-Q101 standards for stress testing of discrete semiconductors. This includes high-temperature operating life, temperature cycling, and surge robustness validation - confirming suitability for under-hood automotive environments. The MPLAD36KP14A also supports optional MIL-PRF-19500 upscreening for enhanced lot traceability and reliability screening, extending its use into mission-critical automotive subsystems.
How does the PLAD package of the MPLAD36KP14A improve thermal performance compared to standard SMD TVS diodes?
The PLAD package of the MPLAD36KP14A uses a metal-base construction where the cathode serves as both electrical return and primary thermal conduction path. With a junction-to-case thermal resistance of just 1.0 °C/W - versus 30–50 °C/W for typical SMA/SMB packages - it enables efficient heat transfer directly to the PCB ground plane or external heatsink. This allows the MPLAD36KP14A to sustain repeated 36 kW surges without thermal runaway, a capability confirmed in Microsemi's RF01216 Rev B test data.
Does the MPLAD36KP14A meet RTCA DO-160F lightning protection requirements?
Yes, the MPLAD36KP14A is validated for RTCA DO-160F Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) Level 4 up to 78 A and Waveform 5A (40/120 μs) Level 4 up to 38 A. Its 36 kW rating, low clamping voltage, and fast response ensure compliance with aircraft-level surge immunity. MicroNote 132 provides temperature derating guidance for these waveforms, and the MPLAD36KP14A is listed explicitly in the DO-160F qualification matrix on page 1 of RF01216.
What is the polarity configuration and mounting orientation of the MPLAD36KP14A?
The MPLAD36KP14A is a unidirectional TVS with cathode on the metal base (bottom side) and anode on the top surface pad. It must be mounted with the metal base soldered directly to a large copper area or heatsink to realize its 1.0 °C/W thermal resistance. Polarity marking is present only on unidirectional versions; the cathode-side orientation is critical for correct circuit protection - reverse installation will prevent proper clamping during positive transients.
MAPLAD36KP14A 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):
- 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
MAPLAD36KP14A FAQ
1.How can I place an order for MAPLAD36KP14A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD36KP14A 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 MAPLAD36KP14A reliable?
The price and inventory of MAPLAD36KP14A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD36KP14A is usually 5 days.
3.What payment methods are accepted for MAPLAD36KP14A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD36KP14A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD36KP14A?
MAPLAD36KP14A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD36KP14A 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 MAPLAD36KP14A?
For technical support, including MAPLAD36KP14A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD36KP14A requirements.
6.How does Aetrix verify that MAPLAD36KP14A is sourced from the original manufacturer or authorized distributors?
All MAPLAD36KP14A 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 MAPLAD36KP14A meets industry standards.
7.What is the process for return or replacement of MAPLAD36KP14A?
All MAPLAD36KP14A units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD36KP14A, 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 MAPLAD36KP14A part is unused and in its original packaging.
Return procedure for MAPLAD36KP14A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD36KP14A Tags
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