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Microchip Technology MPLAD36KP40AE3/TR
- Part No.:
- MPLAD36KP40AE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP40AE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:4,462
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Product details
Overview
MPLAD36KP40AE3/TR from Microchip (formerly Microsemi) is a surface-mount unidirectional transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 40 V working standoff voltage (VWM), 44.4–49.1 V breakdown voltage (VBR), and 64.5 V clamping voltage (VC) at 559 A peak impulse current - designed for lightning and load dump protection in avionics and automotive power rails.
For engineers reviewing the MPLAD36KP40AE3/TR datasheet, MPLAD36KP40AE3/TR pinout, MPLAD36KP40AE3/TR application, or MPLAD36KP40AE3/TR equivalent, this device delivers verified RTCA DO-160 Section 22 multi-stroke lightning compliance, AEC-Q101 qualification, and IEC 61000-4-5 Class 5 secondary protection (42 Ω source) - critical for high-reliability DC bus surge suppression where thermal resistance (RθJC = 1.0 °C/W) and low-profile mounting are design constraints.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transients above its VWM threshold, with sub-100 ps response time for unidirectional devices and a metal-base cathode configuration enabling efficient heat transfer to the PCB pad. Its PLAD package integrates void-free UL94V-0 epoxy molding and annealed matte-tin terminals for robust solderability per MIL-STD-750.
It meets IEC 61000-4-2 ESD (±30 kV contact), IEC 61000-4-4 EFT (40 A), and IEC 61000-4-5 surge (up to Class 5 with 42 Ω source) - with clamping performance validated at 25 °C using 10/1000 μs waveform and derated linearly above 25 °C per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - maximum continuous DC or repetitive peak reverse voltage the device blocks without conduction; sets minimum system operating voltage margin. |
| VBR @ IBR | 44.4–49.1 V at 5 mA - precise avalanche onset range used to select coordination with upstream fuses or downstream ICs. |
| VC @ IPP | 64.5 V at 559 A - maximum voltage seen by protected circuit during worst-case 10/1000 μs surge; defines safe overvoltage ceiling. |
| PPP | 36,000 W - peak pulse power handling capability at 10/1000 μs; enables single-device protection against severe lightning-induced surges. |
| RθJC | 1.0 °C/W - junction-to-case thermal resistance; allows direct heatsinking via metal base to PCB copper pour for sustained energy dissipation. |
| ID @ VWM | 10 µA max - leakage current at rated standoff; ensures negligible standby power loss in battery-backed or low-quiescent systems. |
| αV(BR) | 44 mV/°C - temperature coefficient of breakdown voltage; enables accurate thermal derating in wide-temperature avionics environments. |
Pinout & Package
The MPLAD36KP40AE3/TR uses the PLAD surface-mount package: a low-profile, thermally optimized case with a metal base acting as the cathode terminal and molded epoxy body meeting UL94V-0. Mounting requires the recommended pad layout (Figure 7) for optimal thermal conduction and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and high-current return node; must be soldered to large copper area for RθJC = 1.0 °C/W performance. |
| Top Surface Marking Area | Anode | Non-terminal surface; polarity identified by cathode marking on side of body per Table 1 nomenclature. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Peak Pulse Power | Enables single-device compliance with RTCA DO-160 Section 22 multi-stroke lightning testing without parallel stacking. |
| AEC-Q101 Qualified | Validated for automotive powertrain and chassis applications including 12 V/24 V load dump per ISO 7637-2. |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and floor-life restrictions per IPC/JEDEC J-STD-020D.1 - simplifies SMT assembly logistics. |
| RoHS-compliant (e3) | Meets EU RoHS Directive 2011/65/EU with annealed matte-tin plating - no lead or heavy metal content in terminals. |
| Wafer & Assembly Lot Traceability | Supports full traceability for aerospace and defense programs requiring AS9100-compliant supply chain documentation. |
Applications
| Avionics Power Bus Protection | Automotive 24 V Load Dump Suppression |
|---|---|
Use Scenario: Protecting ARINC 429 data line power supplies and flight control actuator DC inputs from induced lightning transients per RTCA DO-160G Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). IC Role / Device Role / Timing Role: Primary clamping element placed directly at connector entry point to limit voltage excursion to ≤64.5 V during multi-stroke events. Use Value: Enables Level 4/5 pin injection compliance without additional filtering stages - reducing board space and BOM count in SWaP-constrained aircraft systems. | Use Scenario: Safeguarding engine control unit (ECU) 24 V input rails against alternator load dump spikes up to 120 V per ISO 7637-2 Pulse 5a/b. IC Role / Device Role / Timing Role: Unidirectional TVS connected between battery rail and ground, activated only during overvoltage events exceeding 40 V. Use Value: Clamps peak voltage to 64.5 V within <100 ps, preventing damage to 65 V-rated DC-DC converters and microcontrollers downstream. |
| Industrial DC UPS Backup Lines | Railway Signaling Power Interfaces |
Use Scenario: Securing 48 V DC backup lines in telecom UPS systems against grid-switching transients and capacitor bank discharge surges. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after isolation diode to absorb random 36 kW impulses without thermal runaway. Use Value: Achieves 504 W steady-state power dissipation at 100 °C case temperature - supporting continuous operation in enclosed cabinets without forced air cooling. | Use Scenario: Protecting 110 V DC signaling interfaces in European railway signaling cabinets per EN 50121-3-2 surge immunity requirements. IC Role / Device Role / Timing Role: Secondary surge protector coordinated with upstream MOVs to handle fast-rising transients with 44 mV/°C VBR stability across –40 °C to +85 °C. Use Value: Maintains consistent clamping performance across extended temperature range - eliminating recalibration needs in outdoor trackside enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40A | Lower peak power (600 W), DO-214AA package, RθJC = 40 °C/W, VC = 64.5 V at 9.2 A. | Not suitable for RTCA DO-160 multi-stroke or ISO 7637-2 load dump; limited to low-energy ESD/EFT. | Select SMBJ40A only for cost-sensitive consumer electronics where 36 kW surge rating is unnecessary. |
| SMCJ40A | Higher peak power (1500 W), DO-214AB package, RθJC = 15 °C/W, VC = 64.5 V at 23.3 A. | Meets IEC 61000-4-5 Class 3 but fails Class 5 (42 Ω) and RTCA DO-160 Section 22 due to insufficient energy handling. | Choose SMCJ40A for industrial PLC I/O protection where 1.5 kW pulses occur, but avoid for aviation or automotive primary protection. |
Compared with SMBJ40A and SMCJ40A, the MPLAD36KP40AE3/TR delivers 24× and 24× higher peak pulse power respectively, with 40× and 15× lower thermal resistance - enabling direct PCB heatsinking and certified compliance with the most stringent airborne and automotive surge standards.
Availability
MPLAD36KP40AE3/TR is available at Aetrix Electronics and suitable for avionics power bus protection, automotive 24 V load dump suppression, and industrial DC UPS backup lines requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP40AE3/TR 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
Microchip Technology (via acquisition of Microsemi) is a U.S.-based semiconductor supplier specializing in high-reliability analog, mixed-signal, and power management solutions for aerospace, defense, and industrial markets.
The MPLAD36KP40AE3/TR belongs to Microchip's PLAD-series high-power TVS family, engineered specifically for mission-critical surge protection in environments demanding RTCA DO-160, AEC-Q101, and IEC 61000-4-5 compliance - with emphasis on thermal efficiency and long-term parametric stability.
FAQ
What is the clamping voltage of MPLAD36KP40AE3/TR at its rated peak pulse current?
The MPLAD36KP40AE3/TR has a maximum clamping voltage (VC) of 64.5 V at 559 A peak impulse current (IPP) under 10/1000 μs waveform conditions. This value is measured per standard test methods in the datasheet and defines the upper voltage limit imposed on protected circuits during surge events. The MPLAD36KP40AE3/TR maintains this clamping performance with minimal variation across its operating temperature range due to its specified 44 mV/°C temperature coefficient.
Is MPLAD36KP40AE3/TR qualified for automotive applications?
Yes, the MPLAD36KP40AE3/TR is AEC-Q101 qualified and explicitly rated for automotive 24 V load dump protection per ISO 7637-2 Pulse 5a/b. Its 36,000 W peak pulse power, 1.0 °C/W thermal resistance, and 40 V working standoff voltage enable reliable suppression of alternator-induced transients up to 120 V without degradation. The MPLAD36KP40AE3/TR also supports moisture sensitivity level 1 handling, simplifying integration into automotive SMT production lines.
How does the PLAD package of MPLAD36KP40AE3/TR improve thermal performance compared to standard SMC or SMB packages?
The PLAD package of MPLAD36KP40AE3/TR features a metal base that serves as both the cathode terminal and primary thermal conduction path, achieving RθJC = 1.0 °C/W - 40× better than DO-214AB (SMCJ) and 15× better than DO-214AA (SMBJ). This allows direct heat transfer from the silicon junction to the PCB copper pour, enabling sustained energy dissipation without external heatsinks. The MPLAD36KP40AE3/TR's low-profile void-free epoxy body further enhances reliability under thermal cycling stress.
Does MPLAD36KP40AE3/TR meet RTCA DO-160 Section 22 lightning protection requirements?
Yes, the MPLAD36KP40AE3/TR is specifically designed and tested to meet RTCA DO-160G Section 22 multi-stroke lightning standards for aircraft equipment. Its 36,000 W rating, sub-100 ps response time, and validated performance on Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) at Levels 4 and 5 confirm compliance. The MPLAD36KP40AE3/TR achieves this while maintaining VWM = 40 V and VC = 64.5 V - critical for protecting sensitive avionics power inputs without over-clamping.
What is the polarity and marking convention for MPLAD36KP40AE3/TR?
The MPLAD36KP40AE3/TR is a unidirectional TVS diode with cathode on the metal base (bottom surface) and anode on the top surface. Polarity is indicated by a cathode band marking on the side of the epoxy body per Table 1 nomenclature - "A" suffix denotes unidirectional construction. The "e3" suffix confirms RoHS-compliant matte-tin plating, and "TR" indicates tape-and-reel packaging per EIA-481-B. No top-side marking is required since the metal base defines the cathode terminal.
MPLAD36KP40AE3/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 559A
- Power - Peak Pulse:
- 36000W (36kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP40AE3/TR FAQ
1.How can I place an order for MPLAD36KP40AE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP40AE3/TR 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 MPLAD36KP40AE3/TR reliable?
The price and inventory of MPLAD36KP40AE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP40AE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP40AE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP40AE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP40AE3/TR?
MPLAD36KP40AE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP40AE3/TR 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 MPLAD36KP40AE3/TR?
For technical support, including MPLAD36KP40AE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP40AE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP40AE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP40AE3/TR 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 MPLAD36KP40AE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP40AE3/TR?
All MPLAD36KP40AE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP40AE3/TR, 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 MPLAD36KP40AE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP40AE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP40AE3/TR Tags
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