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Microchip Technology MPLAD36KP14AE3
- Part No.:
- MPLAD36KP14AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP14AE3.pdf
- Description:
- TVS DIODE 14VWM 24VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:5,867
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Product details
Overview
MPLAD36KP14AE3 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 MPLAD36KP14AE3 datasheet, MPLAD36KP14AE3 pinout, MPLAD36KP14AE3 application, or MPLAD36KP14AE3 equivalent, this device is selected for high-reliability DC bus protection where multi-stroke surge endurance, low-profile SMT mounting, and traceable lot-level screening per MIL-PRF-19500 are required - especially in avionics power distribution units and automotive load-dump interfaces.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector with avalanche breakdown behavior, triggered when transient voltage exceeds its 15.6–17.2 V V(BR) range at 5 mA. Its metal-base cathode construction enables direct thermal coupling to PCB copper or heatsinks, supporting sustained energy dissipation under repetitive 0.05% duty-cycle surges.
The device meets AEC-Q101 stress testing requirements and supports secondary lightning protection across multiple source impedances (2 Ω, 12 Ω, 42 Ω) per IEC 61000-4-5, with verified performance up to Class 5 for short-distance waveforms and Level 4/5 pin injection per RTCA/DO-160F Waveforms 4 and 5A - all validated using 10/1000 μs and 8.3 ms half-sine test profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains single-stroke lightning-induced surges without failure |
| Reverse Standoff Voltage (VWM) | 14 V - maximum continuous DC operating voltage before clamping initiates |
| Breakdown Voltage (V(BR)) | 15.6–17.2 V @ 5 mA - defines precise avalanche onset threshold for predictable clamping |
| Maximum Clamping Voltage (VC) | 24.0 V @ 3000 A - limits downstream circuit voltage during worst-case surge event |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables efficient heat transfer to PCB or heatsink for thermal reliability |
| Standby Current (ID) | 3000 μA @ VWM - ensures minimal leakage impact on low-power 14 V rail monitoring circuits |
| Moisture Sensitivity Level | Level 1 per J-STD-020B - allows standard SMT reflow without dry-pack preconditioning |
Pinout & Package
Package: PLAD (Plastic Leaded Anode Down) - low-profile surface-mount package with metal base acting as cathode terminal and primary thermal path. Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ≈ 1.7–2.0 g. Cathode marked on metal base underside; anode accessible via top-side metallization.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top metallization) | Positive surge current entry point | Connected to protected line (e.g., 14 V battery rail); carries full IPP during clamping |
| Cathode (metal base) | Common reference and thermal interface | Must be soldered to large copper pour or heatsink; serves as both electrical return and primary heat sink |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW peak pulse rating | Validated clamping performance at 3000 A, 10/1000 μs - exceeds DO-160 Section 22 multi-stroke requirements |
| RoHS-compliant e3 plating | Matte-tin termination meeting MIL-STD-750 Method 2026 - ensures reliable solderability and long-term intermetallic stability |
| Wafer and assembly lot traceability | Full manufacturing pedigree tracking - required for aerospace DER and FAA PMA compliance |
| 1.0 °C/W RθJC | Enables >70 W steady-state power handling when mounted on 100°C heatsink - supports hybrid surge + thermal stress scenarios |
| AEC-Q101 qualified | Passes stress tests including HTSL, TCT, UHAST - validates suitability for automotive 12 V/24 V power networks |
Applications
| Aerospace Power Distribution Unit (PDU) | Automotive Engine Control Module (ECM) Input Protection |
|---|---|
Use Scenario: Protecting 14 V DC bus in airborne avionics PDUs against induced lightning transients per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary clamping element on main power input, activated within <100 ps of overvoltage onset. Use Value: Enables Class 5 multi-stroke compliance with no derating required at 25°C ambient - eliminates need for parallel TVS arrays. |
Use Scenario: Safeguarding ECM microcontroller supply inputs during alternator load dump events (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional shunt protector placed upstream of LDO regulators and ECU power sequencing ICs. Use Value: Clamps 120 V/100 ms transients to ≤24 V while maintaining <3000 μA standby leakage - preserves low-quiescent-current design goals. |
| Industrial DC Motor Drive DC Bus | Railway Signaling Power Interface |
Use Scenario: Suppressing commutation spikes and regenerative braking surges on 24 V DC motor drive power rails. IC Role / Device Role / Timing Role: High-energy transient clamp on DC link between rectifier and H-bridge inverter stage. Use Value: Withstands 36 kW pulses at 0.05% duty cycle - prevents MOSFET gate oxide damage and controller latch-up during repeated motor starts/stops. |
Use Scenario: Securing 14 V signaling power inputs in EN 50121-3-2 compliant railway trackside electronics against EFT and surge coupling. IC Role / Device Role / Timing Role: Secondary protection stage following primary gas discharge tube (GDT) in cascaded architecture. Use Value: Provides sub-24 V clamping with <5 ns response - ensures logic-level compatibility for 14 V RS-485 transceivers and safety-critical I/O. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A | 600 W PPP rating, 5.0 mm × 4.5 mm SMB package, RθJC = 35 °C/W | Limited to single-stroke IEC 61000-4-5 Class 3; unsuitable for DO-160 multi-stroke | Select only for cost-sensitive industrial controls with <1 kA surge exposure |
| SMCJ14A | 1500 W PPP, 7.2 mm × 6.2 mm SMC package, RθJC = 15 °C/W, no MIL-PRF-19500 screening | Meets AEC-Q101 but lacks DO-160 waveform validation and lot traceability | Use where aerospace qualification is not required but higher energy handling than SMBJ is needed |
Compared with SMBJ14A and SMCJ14A, the MPLAD36KP14AE3 delivers 24× and 24× higher peak pulse power respectively, with certified multi-stroke endurance, metal-base thermal management, and full aerospace traceability - making it the sole option for DO-160-compliant avionics and mission-critical automotive ECUs.
Availability
MPLAD36KP14AE3 is available at Aetrix Electronics and suitable for aerospace power distribution, automotive engine control, and industrial motor drive applications requiring stable component supply, long-lifecycle support, and certified surge protection performance.
Supply support for MPLAD36KP14AE3 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) designs high-reliability analog, mixed-signal, and power semiconductors for aerospace, defense, and industrial markets - with emphasis on radiation-hardened, high-voltage, and surge-tolerant components.
The MPLAD36KP14AE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for DO-160 and ISO 7637-2 compliance in safety-critical vehicle and aircraft power systems - prioritizing thermal robustness, multi-stroke endurance, and full lot traceability.
FAQ
What is the clamping voltage of MPLAD36KP14AE3 at its rated peak pulse current?
The MPLAD36KP14AE3 has a maximum clamping voltage (VC) of 24.0 V at 3000 A peak impulse current under 10/1000 μs waveform conditions. This value is guaranteed across temperature and lot variations per Microsemi RF01216 Rev B specifications, ensuring downstream 14 V logic and power circuits remain within safe operating limits during surge events.
Is MPLAD36KP14AE3 suitable for bidirectional signal line protection?
No, MPLAD36KP14AE3 is a unidirectional TVS diode - its cathode is the metal base and anode is the top metallization, making it appropriate only for DC power rail protection. For bidirectional AC or data-line protection, the MPLAD36KP14CA variant must be used instead, as confirmed in the nomenclature table and electrical characteristics section of RF01216 Rev B.
Does MPLAD36KP14AE3 require dry pack moisture protection before SMT reflow?
No, MPLAD36KP14AE3 has IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1, meaning it can be stored and processed under standard factory conditions without dry packing or baking. This eliminates moisture-related popcorning risk during lead-free reflow, as explicitly stated in the "MECHANICAL and PACKAGING" section of RF01216 Rev B.
What thermal interface is recommended for optimal performance of MPLAD36KP14AE3?
Optimal thermal performance requires soldering the metal base (cathode) of MPLAD36KP14AE3 directly to a minimum 10 cm² copper pour or external heatsink, per the pad layout diagram in RF01216 Rev B. The 1.0 °C/W RθJC rating assumes this thermal path; insufficient copper area increases junction temperature and reduces surge endurance.
Can MPLAD36KP14AE3 be used in automotive applications per ISO 7637-2?
Yes, MPLAD36KP14AE3 is AEC-Q101 qualified and validated for ISO 7637-2 Pulse 5a (load dump) protection in 12 V automotive systems. Its 36 kW rating and 24.0 V clamping voltage ensure compliance with stringent voltage clamp limits for ECUs, as confirmed by Microsemi's application notes and test reports referenced in RF01216 Rev B.
MPLAD36KP14AE3 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
MPLAD36KP14AE3 FAQ
1.How can I place an order for MPLAD36KP14AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP14AE3 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 MPLAD36KP14AE3 reliable?
The price and inventory of MPLAD36KP14AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP14AE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP14AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP14AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP14AE3?
MPLAD36KP14AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP14AE3 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 MPLAD36KP14AE3?
For technical support, including MPLAD36KP14AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP14AE3 requirements.
6.How does Aetrix verify that MPLAD36KP14AE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP14AE3 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 MPLAD36KP14AE3 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP14AE3?
All MPLAD36KP14AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP14AE3, 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 MPLAD36KP14AE3 part is unused and in its original packaging.
Return procedure for MPLAD36KP14AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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