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Microchip Technology MPLAD36KP70AE3/TR
- Part No.:
- MPLAD36KP70AE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP70AE3/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:7,114
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Product details
Overview
MPLAD36KP70AE3/TR from Microchip Technology (formerly Microsemi) is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤113 V at 319 A peak impulse current, and features a 70 V working standoff voltage with 77.8–86.0 V breakdown range. It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP70AE3/TR datasheet, MPLAD36KP70AE3/TR pinout, MPLAD36KP70AE3/TR application, or MPLAD36KP70AE3/TR equivalent, this device is selected for high-reliability DC bus protection where low thermal resistance (RθJC = 1.0 °C/W), fast clamping (<100 ps rise time), and RoHS-compliant matte-tin terminations are critical - especially in avionics power distribution units and 24/48 V vehicle systems subject to load dump.
Technical Context
This TVS diode operates in avalanche breakdown mode to shunt high-energy transients away from sensitive downstream circuitry. Its PLAD package integrates a metal base acting as the cathode terminal, enabling direct thermal coupling to heatsinks or PCB copper planes for effective junction-to-case heat dissipation.
It is rated for continuous operation from –55 °C to +150 °C, with derated steady-state power dissipation (504 W at TC = 100 °C) and full 36 kW surge capability only when mounted per specified FR4 pad layout. Clamping performance is validated under IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances) and RTCA/DO-160G Waveform 4 & 5A pin injection tests.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 36,000 W at 10/1000 μs - enables single-device protection against severe lightning-induced surges per DO-160G Level 4/5. |
| Working Standoff Voltage (VWM) | 70 V - matches nominal 48 V or 60 V DC systems with margin above peak operating voltage. |
| Clamping Voltage (VC) | 113 V at IPP = 319 A - limits downstream voltage stress during worst-case surge events. |
| Breakdown Voltage (VBR) | 77.8–86.0 V at IBR = 5 mA - ensures reliable turn-on before system overvoltage damage occurs. |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - allows efficient heat transfer to external heatsink or large copper pour, critical for repeated surge handling. |
| Temperature Range | –55 °C to +150 °C - supports deployment in engine bays, avionics bays, and industrial control enclosures. |
| RoHS Compliance | e3 suffix - matte-tin plating meets JEDEC J-STD-020D.1 Level 1 moisture sensitivity; no dry pack required. |
Pinout & Package
The MPLAD36KP70AE3/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 metallized surface. Total weight is ~1.7–2.0 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and surge return node; must be soldered to large copper area or heatsink for thermal management. |
| Top Metallized Surface | Anode | Connects to protected line (e.g., 48 V rail); forms series path with cathode to clamp positive transients. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Surge Rating | Validated at 10/1000 μs waveform - eliminates need for parallel TVS arrays in high-energy protection circuits. |
| AEC-Q101 Qualification | Qualified for automotive powertrain and chassis applications - includes temperature cycling, HTRB, and surge testing. |
| Low RθJC = 1.0 °C/W | Enables >500 W steady-state power dissipation at 100 °C case temperature - supports high-duty-cycle surge environments. |
| RTCA DO-160G Compliance | Meets Section 22 multi-stroke lightning (Waveform 4 & 5A) - certified for primary and secondary protection in aircraft power systems. |
| Traceable Lot Fabrication | Fully traceable wafer and assembly lots - required for aerospace and defense procurement documentation (AS9100). |
Applications
| Aerospace Power Distribution | Automotive 48 V Mild Hybrid Systems |
|---|---|
|
Use Scenario: Protection of 28 V and 270 V DC distribution buses in commercial aircraft against lightning-induced transients per DO-160G Section 22. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamping positive surges on main power feeders and avionics rack inputs. Use Value: Single-device 36 kW rating satisfies Level 4/5 pin-injection and multi-stroke lightning requirements without cascaded protection stages. |
Use Scenario: Load dump suppression on 48 V battery rails in mild hybrid vehicles during alternator disconnection events. IC Role / Device Role / Timing Role: High-power transient suppressor placed at battery input of DC-DC converters and motor controllers. Use Value: Clamps 70 V standby rail to ≤113 V within <100 ps, preventing MOSFET gate oxide failure and controller latch-up. |
| Industrial 48 V Telecom Power Supplies | Railway Signaling Power Interfaces |
|
Use Scenario: Secondary surge protection on output rails of telecom rectifiers exposed to induced surges from nearby AC mains or lightning. IC Role / Device Role / Timing Role: Final-stage TVS on +48 V DC output, downstream of MOV-based primary protection. Use Value: Low clamping voltage (113 V) and fast response ensure downstream PoE switches and baseband processors remain within absolute maximum ratings. |
Use Scenario: Protection of 72 V DC signaling interfaces in railway trackside cabinets subjected to EFT bursts and long-line induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on data/power combo lines feeding axle counters and signal relays. Use Value: AEC-Q101 qualification and –55 °C to +150 °C operation guarantee reliability in unheated outdoor enclosures across seasonal extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-power TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70A | Lower peak power (600 W), SMB package, RθJC ≈ 15 °C/W - cannot handle multi-stroke lightning or automotive load dump. | Only suitable for low-energy board-level ESD/EFT; not certified for DO-160G or AEC-Q101. | Select SMBJ70A only for cost-sensitive consumer electronics with <100 A surge exposure. |
| SMCJ70A | Higher power (1500 W) than SMBJ but still 24× lower than MPLAD36KP70AE3/TR; SMC package; no DO-160G certification. | Limited to industrial PLC I/O protection; lacks thermal performance for sustained surge duty cycles. | Choose SMCJ70A if footprint constraints prevent PLAD use and surge energy remains below 1.5 kW. |
Compared with SMBJ70A and SMCJ70A, the MPLAD36KP70AE3/TR provides 24× and 24× higher peak power respectively, certified DO-160G compliance, and 15× better thermal resistance - making it the only viable option for aerospace-grade lightning protection and automotive 48 V load dump where single-device robustness is mandatory.
Availability
MPLAD36KP70AE3/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive 48 V mild hybrid systems, and industrial telecom power supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MPLAD36KP70AE3/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 and now manufactures high-reliability analog, timing, and protection devices for aerospace, defense, and industrial markets.
The MPLAD36KP70AE3/TR belongs to Microchip's high-power surface-mount TVS family, engineered specifically for DO-160G-compliant lightning protection and AEC-Q101 automotive surge resilience in harsh-environment power systems.
FAQ
What is the clamping voltage of MPLAD36KP70AE3/TR at its rated peak pulse current?
The MPLAD36KP70AE3/TR has a maximum clamping voltage (VC) of 113 V when subjected to its rated peak pulse current of 319 A at the 10/1000 μs waveform. This value is measured per standard test conditions in the datasheet and defines the upper voltage limit imposed on protected circuitry during a full-rated surge event. The MPLAD36KP70AE3/TR maintains this clamping performance across its operational temperature range when properly mounted.
Is MPLAD36KP70AE3/TR suitable for bidirectional surge protection?
No, MPLAD36KP70AE3/TR is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It protects against positive transients only - the cathode (metal base) must be connected to the most positive potential in the circuit. For bidirectional protection, Microchip offers the MPLAD36KP70CAE3/TR variant, which clamps both polarities and uses a different breakdown symmetry.
Does MPLAD36KP70AE3/TR require a heatsink for standard operation?
The MPLAD36KP70AE3/TR does not require an external heatsink for single-event surge handling, but its metal base must be soldered to a minimum 1.5 in² (10 cm²) copper pour on 1 oz FR4 to achieve the specified RθJA = 50 °C/W and sustain repeated surges. For continuous high-duty-cycle applications, direct mounting to an external heatsink is recommended to leverage its RθJC = 1.0 °C/W specification.
What certifications does MPLAD36KP70AE3/TR hold?
The MPLAD36KP70AE3/TR is AEC-Q101 qualified for automotive applications and certified to meet RTCA DO-160G Section 22 for multi-stroke lightning (Waveforms 4 and 5A). It also complies with RoHS (e3), IPC/JEDEC J-STD-020D.1 Level 1 moisture sensitivity, and MIL-PRF-19500 upscreening options are available upon request.
How does the PLAD package of MPLAD36KP70AE3/TR differ from standard SMC or SMB packages?
The PLAD package of MPLAD36KP70AE3/TR features a metal base that serves as the cathode and primary thermal path - unlike plastic-bodied SMC/SMB packages, which rely solely on PCB copper for heat dissipation. This design achieves RθJC = 1.0 °C/W versus ~15 °C/W for SMCJ devices, enabling 50× higher steady-state power handling and superior multi-pulse reliability in high-temperature environments.
MPLAD36KP70AE3/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):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 319A
- 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
MPLAD36KP70AE3/TR FAQ
1.How can I place an order for MPLAD36KP70AE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP70AE3/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 MPLAD36KP70AE3/TR reliable?
The price and inventory of MPLAD36KP70AE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP70AE3/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP70AE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP70AE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP70AE3/TR?
MPLAD36KP70AE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP70AE3/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 MPLAD36KP70AE3/TR?
For technical support, including MPLAD36KP70AE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP70AE3/TR requirements.
6.How does Aetrix verify that MPLAD36KP70AE3/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP70AE3/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 MPLAD36KP70AE3/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP70AE3/TR?
All MPLAD36KP70AE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP70AE3/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 MPLAD36KP70AE3/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP70AE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP70AE3/TR Tags
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