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Microchip Technology MPLAD36KP24AE3
- Part No.:
- MPLAD36KP24AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP24AE3.pdf
- Description:
- TVS DIODE 24VWM 39.8VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,153
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Product details
Overview
MPLAD36KP24AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 24 V reverse standoff voltage (VWM), clamps to ≤39.8 V at 905 A peak pulse current (IPP), and operates across –55°C to +150°C junction temperature.
For engineers reviewing the MPLAD36KP24AE3 datasheet, MPLAD36KP24AE3 pinout, MPLAD36KP24AE3 application, or MPLAD36KP24AE3 equivalent, this device is selected for lightning immunity (RTCA DO-160 Section 22), load dump suppression, and secondary IEC 61000-4-5 Class 3–5 protection with 2–42 Ω source impedance - requiring precise VWM ≥ system peak operating voltage and thermal management via metal-base mounting.
Technical Context
This TVS diode uses silicon avalanche technology to provide fast-response clamping (<100 ps response time) during high-energy transients. Its unidirectional polarity and cathode-on-base construction enable low-inductance, high-current path routing directly to PCB ground planes.
Rated for 36,000 W peak pulse power under 10/1000 μs waveform, it achieves 1.0 °C/W junction-to-case thermal resistance when mounted on recommended FR4 pad layout with thermal vias - critical for multi-stroke lightning compliance where cumulative heating must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - supports multi-stroke lightning testing per RTCA DO-160F Section 22 without thermal runaway. |
| Reverse Standoff Voltage (VWM) | 24 V - must exceed peak DC or AC operating voltage of protected circuit to avoid leakage or false triggering. |
| Clamping Voltage (VC) | ≤39.8 V @ 905 A IPP - defines maximum voltage seen by downstream ICs during surge; ensures logic-level or 24 V control circuit survival. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - requires direct metal-base soldering to thermal pad for effective heat extraction; enables sustained surge duty cycles ≤0.05%. |
| Standby Current (ID) | ≤10 μA @ 24 V - negligible leakage at rated VWM, preserving battery life in always-on vehicle modules. |
| Breakdown Voltage (V(BR)) | 26.7–29.5 V @ 5 mA - confirms avalanche onset margin above VWM; ensures stable clamping initiation without premature conduction. |
| Temperature Coefficient (αV(BR)) | +22 mV/°C - predictable V(BR) drift over –55°C to +150°C allows accurate worst-case clamping modeling in extreme environments. |
Pinout & Package
Package: PLAD (Plastic Leaded Anode Down) - void-free UL94V-0 epoxy body with metal base acting as cathode terminal; dimensions 12.32 × 10.54 × 5.08 mm (L × W × H); weight ~1.7–2.0 g; RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary current return path; must be soldered to large copper area or heatsink for thermal and electrical performance. |
| Top Surface Pad | Anode | Input side for transient energy; connects to line being protected (e.g., 24 V supply rail). |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMT package with metal base | Enables high-current surge handling without through-hole mounting; reduces board space and assembly cost vs. axial leaded alternatives. |
| RTCA DO-160F Waveform 4 & 5A compliance | Validated for Level 4/5 pin-injection immunity (6.4/69 μs and 40/120 μs), meeting aircraft avionics EMI hardening requirements. |
| AEC-Q101 qualified | Qualified for automotive underhood applications including alternator load dump and ISO 7637-2 pulse 5a/b - ensuring reliability in harsh thermal/vibration environments. |
| IEC 61000-4-5 Class 3–5 support | Meets secondary lightning protection up to 42 Ω source impedance, enabling use in industrial PLC I/O modules and motor drive DC bus lines. |
| Moisture Sensitivity Level 1 | No dry pack or baking required before reflow; simplifies manufacturing and eliminates moisture-related popcorning risk. |
Applications
| Aerospace Avionics Power Input | Automotive 24 V Load Dump Protection |
|---|---|
Use Scenario: Protecting flight control unit (FCU) 24 V input against lightning-induced surges per RTCA DO-160F Section 22. IC Role / Device Role / Timing Role: Primary clamping element placed at board edge before DC-DC converter input. Use Value: Limits transient voltage to ≤39.8 V during 36 kW strokes, preventing damage to isolated gate drivers and microcontrollers. |
Use Scenario: Safeguarding engine control module (ECM) power rail during alternator load dump events (ISO 7637-2 Pulse 5b). IC Role / Device Role / Timing Role: Unidirectional TVS shunting surge energy to chassis ground before linear regulators. Use Value: Withstands 1500 A forward surge (IFSM) and clamps within 100 ps, preserving CAN transceivers and sensor interfaces. |
| Industrial PLC Analog Input Protection | Railway Signaling DC Power Interface |
Use Scenario: Shielding 4–20 mA analog input channels from induced RFI and EFT bursts in factory automation cabinets. IC Role / Device Role / Timing Role: Front-end transient suppressor on signal conditioning PCB, upstream of precision op-amps. Use Value: 10 μA standby current avoids loading sensitive current loops; 39.8 V clamping prevents ADC saturation during 4 kV EFT (IEC 61000-4-4). |
Use Scenario: Securing 110 V DC signaling power interface in train control systems against traction-induced switching transients. IC Role / Device Role / Timing Role: Secondary surge protector after primary MOV stage, providing fast, low-clamp backup. Use Value: 24 V VWM aligns with nominal rail; 1.0 °C/W RθJC enables reliable operation in sealed enclosures with no forced airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower PPP (600 W), smaller SMB package, 1.5x higher clamping voltage (43.5 V @ 13.3 A). | Suitable only for low-energy ESD/EFT; cannot meet RTCA DO-160F multi-stroke or load dump requirements. | Select SMBJ24A only for cost-sensitive consumer-grade designs where 36 kW capability is unnecessary. |
| SMCJ24A | Higher PPP (1500 W), larger SMC package, clamping voltage 38.9 V @ 38.8 A - still 23x lower energy rating than MPLAD36KP24AE3. | Acceptable for basic IEC 61000-4-5 Class 2, but fails Class 3+ and DO-160F Waveform 4/5A due to insufficient IPP and thermal mass. | Choose SMCJ24A if footprint constraints prohibit PLAD size, but verify full system surge margin falls within its 1.5 kW limit. |
Compared with SMBJ24A and SMCJ24A, the MPLAD36KP24AE3 provides 24× and 24× greater peak pulse power respectively, enabling compliance with aviation-grade lightning standards and automotive load dump - where thermal robustness, metal-base mounting, and sub-100 ps response are non-negotiable design requirements.
Availability
MPLAD36KP24AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive powertrain electronics, and industrial PLC I/O modules requiring stable component supply with long-term lifecycle assurance and traceable sourcing.
Supply support for MPLAD36KP24AE3 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 components for mission-critical systems.
The MPLAD36KP24AE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning immunity and automotive load dump protection in safety-critical aerospace and transportation applications.
FAQ
What is the maximum clamping voltage of the MPLAD36KP24AE3 at its rated peak pulse current?
The MPLAD36KP24AE3 has a maximum clamping voltage (VC) of 39.8 V at 905 A peak pulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed per datasheet Figure 3 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring downstream 24 V logic and analog components remain within safe operating limits.
Is the MPLAD36KP24AE3 RoHS compliant, and what does the 'E3' suffix indicate?
Yes, the MPLAD36KP24AE3 is RoHS compliant. The 'E3' suffix explicitly denotes annealed matte-tin plating per J-STD-020B Level 1 moisture sensitivity - meaning no dry-packaging or baking is required prior to reflow soldering. This simplifies manufacturing flow and eliminates moisture-related defects such as popcorn cracking during assembly.
How is polarity identified on the MPLAD36KP24AE3, and why does it matter for PCB layout?
The MPLAD36KP24AE3 is unidirectional, with the cathode located on the metal base (bottom surface) and the anode on the top surface pad. Correct orientation is essential: the cathode must connect to system ground or lowest-potential reference plane to ensure proper avalanche conduction during positive transients. Reversal causes open-circuit behavior and complete loss of protection.
Can the MPLAD36KP24AE3 be used in bidirectional configurations, and what part number would that require?
No, the MPLAD36KP24AE3 is strictly unidirectional. For bidirectional operation, Microsemi specifies the MPLAD36KP24CA variant - which replaces the 'A' suffix with 'CA'. The CA version provides symmetrical clamping for AC-coupled or floating-line applications but exhibits different breakdown and clamping characteristics, requiring full circuit revalidation.
What thermal management practices are required to maintain the 36 kW rating of the MPLAD36KP24AE3?
To sustain the full 36,000 W peak pulse power rating, the MPLAD36KP24AE3 must be mounted using the recommended pad layout (0.470" × 0.230") with thermal vias connecting the metal base to internal or backside ground planes. Derating applies above 25°C ambient; at 100°C case temperature, steady-state power drops to 71 W - underscoring the need for low RθJA layout design and avoidance of adjacent heat sources.
MPLAD36KP24AE3 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 39.8V
- Current - Peak Pulse (10/1000µs):
- 905A
- 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
MPLAD36KP24AE3 FAQ
1.How can I place an order for MPLAD36KP24AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP24AE3 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 MPLAD36KP24AE3 reliable?
The price and inventory of MPLAD36KP24AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP24AE3 is usually 5 days.
3.What payment methods are accepted for MPLAD36KP24AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP24AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP24AE3?
MPLAD36KP24AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP24AE3 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 MPLAD36KP24AE3?
For technical support, including MPLAD36KP24AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP24AE3 requirements.
6.How does Aetrix verify that MPLAD36KP24AE3 is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP24AE3 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 MPLAD36KP24AE3 meets industry standards.
7.What is the process for return or replacement of MPLAD36KP24AE3?
All MPLAD36KP24AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP24AE3, 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 MPLAD36KP24AE3 part is unused and in its original packaging.
Return procedure for MPLAD36KP24AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP24AE3 Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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