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Microchip Technology MPLAD36KP33AE3/TR
- Part No.:
- MPLAD36KP33AE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP33AE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:2,463
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Product details
Overview
MPLAD36KP33AE3/TR from Microchip (formerly Microsemi) is a unidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 33 V working standoff voltage (VWM), 36.7–40.6 V breakdown voltage (VBR), and 53.3 V clamping voltage (VC) at 676 A peak impulse current - designed for lightning and load dump protection in aerospace power rails and automotive ECUs.
For engineers reviewing the MPLAD36KP33AE3/TR datasheet, MPLAD36KP33AE3/TR pinout, MPLAD36KP33AE3/TR application, or MPLAD36KP33AE3/TR equivalent, key selection criteria include its 1.0 °C/W junction-to-case thermal resistance, RoHS-compliant matte-tin plating, DO-160G Waveform 4/5A compliance, and PLAD package's metal-base cathode configuration for high-current thermal path integrity.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transients above its 33 V standoff threshold, delivering sub-100 ps response time in unidirectional configuration. Its low RθJC (1.0 °C/W) enables direct mounting to heatsinks or copper planes for sustained multi-stroke surge handling per RTCA DO-160 Section 22.
It meets IEC 61000-4-5 (Class 1–5, 2–42 Ω source impedance), IEC 61000-4-2/4 ESD/EFT immunity, and pin-injection requirements for avionics - with derated power dissipation (504 W at TC = 100 °C) governed by its thermal design envelope and FR4 pad layout per Figure 7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous DC or repetitive peak reverse voltage before conduction begins; sets minimum system operating margin. |
| VBR @ IBR | 36.7–40.6 V at 5 mA - Confirmed breakdown onset range; ensures reliable turn-on without premature leakage. |
| VC @ IPP | 53.3 V at 676 A - Clamped voltage during 10/1000 μs surge; defines maximum stress on downstream ICs. |
| PPP | 36,000 W - Peak pulse power rating; validates capability against lightning-induced surges per DO-160G. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; enables direct thermal coupling to heatsink for multi-pulse reliability. |
| ID @ VWM | 10 µA max - Standby leakage current at 33 V; ensures minimal quiescent power loss in always-on systems. |
| αV(BR) | 35 mV/°C - Temperature coefficient of breakdown voltage; supports stable clamping across –55 °C to +150 °C operation. |
Pinout & Package
The MPLAD36KP33AE3/TR uses the PLAD surface-mount package: a low-profile, void-free thermosetting epoxy body (UL94V-0) with a metal base serving as the cathode terminal. The anode is the top-side metallization. Weight is ~1.7–2.0 g; polarity marking is via part number laser etch on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal base (bottom) | Cathode | Primary heat-sinking path and return node for surge current; must be soldered to large copper pour or heatsink. |
| Top metallization | Anode | Input node for protected line; connects to power rail or signal line requiring transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW surge rating at 10/1000 μs | Validates robustness against aircraft lightning strikes (DO-160G Section 22) and automotive load dump events. |
| AEC-Q101 qualification | Confirms reliability for automotive under-hood applications including engine control modules and battery management systems. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints per IPC/JEDEC J-STD-020D.1 - simplifies SMT assembly. |
| RoHS-compliant matte-tin plating | Ensures solderability per MIL-STD-750 Method 2026 and compatibility with lead-free reflow profiles up to 260 °C. |
| Wafer and assembly lot traceability | Supports full supply chain auditability for aerospace and defense programs requiring strict component pedigree. |
Applications
| Avionics Power Bus Protection | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protecting 28 V DC distribution buses in commercial aircraft against DO-160G Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) pin injection transients. IC Role / Device Role / Timing Role: Primary clamping device placed at bus entry point to limit voltage excursion to ≤53.3 V during multi-stroke surges. Use Value: Enables compliance with Level 4/5 pin injection requirements while maintaining <10 µA leakage at nominal 28 V operation. | Use Scenario: Safeguarding microcontroller power inputs in diesel engine ECUs exposed to ISO 7637-2 Load Dump pulses (up to 60 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional TVS shunting surge energy directly to chassis ground via metal-base cathode connection. Use Value: Achieves 36,000 W clamping capacity with 1.0 °C/W thermal resistance - sustaining repeated 12 V–33 V load dump events without thermal runaway. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Suppressing commutation spikes on 36 V DC link rails in servo drives where IGBT switching induces >1 kV/µs transients. IC Role / Device Role / Timing Role: Fast-response (sub-100 ps) avalanche clamp limiting voltage overshoot to 53.3 V during random switching events. Use Value: Prevents gate oxide damage to downstream MOSFET drivers by holding rail voltage within safe SOA limits during high-dI/dt events. | Use Scenario: Securing 33 V signaling lines in European railway signaling cabinets against IEC 61000-4-5 Class 4 surges (42 Ω source, 4 kV test level). IC Role / Device Role / Timing Role: Secondary protection element after gas discharge tube (GDT), providing precise low-clamp voltage after GDT crowbar action. Use Value: Delivers 53.3 V clamping at 676 A - reducing residual stress on isolated RS-485 transceivers by >30% versus standard 600 W TVS devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | 600 W PPP, 53.3 V VC @ 9.8 A, DO-214AA package, RθJC ≈ 40 °C/W | Limited to single-stroke or low-duty-cycle surges; unsuitable for DO-160G multi-stroke validation. | Select SMBJ33A only for cost-sensitive consumer electronics with infrequent transients and no thermal cycling requirements. |
| SMCJ33A | 1500 W PPP, 53.3 V VC @ 28.3 A, DO-214AB package, RθJC ≈ 15 °C/W | Insufficient for 36 kW lightning testing; requires larger PCB area than PLAD for equivalent thermal performance. | Choose SMCJ33A when board space allows larger footprint and application demands only IEC 61000-4-5 Class 3 compliance. |
Compared with SMBJ33A and SMCJ33A, the MPLAD36KP33AE3/TR delivers 24× and 24× higher peak power handling respectively, with 40× and 15× lower thermal resistance - enabling direct integration into high-reliability aerospace and automotive power rails where multi-stroke survivability and thermal stability are non-negotiable.
Availability
MPLAD36KP33AE3/TR is available at Aetrix Electronics and suitable for avionics power bus protection, automotive ECU surge hardening, and industrial motor drive DC link stabilization requiring stable component supply across extended production lifecycles.
Supply support for MPLAD36KP33AE3/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 (acquired Microsemi in 2018) is a global semiconductor provider specializing in high-reliability analog, mixed-signal, and timing solutions for aerospace, defense, and industrial markets.
The MPLAD36KP33AE3/TR belongs to Microchip's high-power PLAD TVS family, engineered specifically for multi-stroke lightning protection and automotive load dump suppression in safety-critical power systems.
FAQ
What is the clamping voltage of MPLAD36KP33AE3/TR at its rated peak pulse current?
The MPLAD36KP33AE3/TR has a maximum clamping voltage (VC) of 53.3 V at its rated peak impulse current (IPP) of 676 A under the 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MPLAD36KP33AE3/TR maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is MPLAD36KP33AE3/TR RoHS-compliant and what does the "e3" suffix indicate?
Yes, MPLAD36KP33AE3/TR is RoHS-compliant, as confirmed by the "e3" suffix in its part number per Microchip's nomenclature (Table 1). The "e3" denotes annealed matte-tin plating meeting RoHS Directive 2011/65/EU requirements. This plating ensures solderability per MIL-STD-750 Method 2026 and supports lead-free reflow profiles up to 260 °C for 10 seconds - critical for high-reliability manufacturing of the MPLAD36KP33AE3/TR.
How does the PLAD package of MPLAD36KP33AE3/TR improve thermal performance over standard SMC/SMB packages?
The PLAD package of MPLAD36KP33AE3/TR features a metal base acting as the cathode terminal, providing a direct thermal conduction path from the silicon die to the PCB copper pour or external heatsink. With a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W - versus ~15–40 °C/W for DO-214AB/AA packages - the MPLAD36KP33AE3/TR sustains multi-stroke surges without thermal runaway. This architecture is essential for DO-160G Section 22 compliance.
Can MPLAD36KP33AE3/TR be used for bidirectional transient suppression?
No, MPLAD36KP33AE3/TR is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix in its part number. It conducts only during reverse-biased overvoltage events and blocks forward current beyond its forward surge rating (1500 A at 8.3 ms). For bidirectional protection, Microchip offers the MPLAD36KP33CAE3/TR variant - which shares identical clamping and power ratings but provides symmetrical surge suppression for AC-coupled or floating signal lines.
What industry standards does MPLAD36KP33AE3/TR meet for lightning protection?
MPLAD36KP33AE3/TR is validated for RTCA DO-160G Section 22 multi-stroke lightning testing (Waveform 4 and 5A), IEC 61000-4-5 Class 1–5 (42 Ω, 12 Ω, and 2 Ω source impedances), and secondary lightning protection per IEC 61000-4-5. Its 36,000 W rating and 1.0 °C/W thermal resistance enable repeatable performance across all specified stroke counts - a requirement not met by lower-power TVS devices like the MPLAD36KP33AE3/TR's smaller counterparts.
MPLAD36KP33AE3/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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 676A
- 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
MPLAD36KP33AE3/TR FAQ
1.How can I place an order for MPLAD36KP33AE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP33AE3/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 MPLAD36KP33AE3/TR reliable?
The price and inventory of MPLAD36KP33AE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP33AE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP33AE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP33AE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP33AE3/TR?
MPLAD36KP33AE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP33AE3/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 MPLAD36KP33AE3/TR?
For technical support, including MPLAD36KP33AE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP33AE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP33AE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP33AE3/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 MPLAD36KP33AE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP33AE3/TR?
All MPLAD36KP33AE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP33AE3/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 MPLAD36KP33AE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP33AE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP33AE3/TR Tags
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