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Microchip Technology MPLAD36KP43A/TR
- Part No.:
- MPLAD36KP43A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP43A/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:3,612
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Product details
Overview
MPLAD36KP43A/TR from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 43 V working standoff voltage (VWM), 47.8–52.8 V breakdown voltage (VBR), and 69.4 V clamping voltage (VC) at 519 A peak impulse current - designed for lightning and load dump protection in aerospace and automotive power rails.
For engineers reviewing the MPLAD36KP43A/TR datasheet, MPLAD36KP43A/TR pinout, MPLAD36KP43A/TR application, or MPLAD36KP43A/TR equivalent, key selection criteria include verified clamping performance under RTCA DO-160G Waveform 4/5A, AEC-Q101 qualification, thermal resistance (RθJC = 1.0 °C/W), and RoHS-compliant matte-tin plating suitable for high-reliability PCB assembly.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp fast transients, with sub-100 ps response time for unidirectional devices and low differential resistance during surge conduction. Its PLAD package features a metal base acting as cathode terminal, enabling direct thermal coupling to heatsinks or copper pour for sustained energy dissipation.
It meets IEC 61000-4-5 (Class 1–5, 2–42 Ω source impedance), IEC 61000-4-2/4-4 (ESD/EFT), and RTCA DO-160G Section 22 (multi-stroke lightning) - validated across temperature range –55 °C to +150 °C with 3σ lot norm screening on standby current (ID ≤ 10 µA at VWM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 36,000 W - enables single-device protection against severe lightning-induced surges per DO-160G Level 4/5 |
| Working Standoff Voltage (VWM) | 43 V - matches nominal 36 V automotive and avionics bus systems without leakage-triggered false trips |
| Clamping Voltage (VC) | 69.4 V at 519 A - limits downstream IC stress below 70 V during full-rated surge, preserving 75 V-rated components |
| Breakdown Voltage (VBR) | 47.8–52.8 V at 5 mA - ensures reliable turn-on margin above VWM while avoiding premature conduction |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - supports >500 W steady-state power handling when mounted on thermally optimized copper pad |
| Standby Current (ID) | ≤10 µA at 43 V - prevents battery drain in always-on vehicle subsystems over full temperature range |
| Temperature Coefficient (αV(BR)) | 50 mV/°C - allows predictable VBR shift across –55 °C to +150 °C for robust design margining |
Pinout & Package
The MPLAD36KP43A/TR uses the PLAD surface-mount package: void-free UL94V-0 epoxy body with metal base acting as cathode terminal; anode is top-side metallization. Package dimensions are 10.3 × 8.4 × 3.1 mm (L × W × H); weight ≈ 1.8 g. Cathode polarity is marked by metal base exposure - no silkscreen required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (top metallization) | Transient current entry point | Connected to protected line (e.g., 36 V rail); must be routed with low-inductance trace to minimize overshoot |
| Cathode (metal base) | Current return path & thermal interface | Soldered directly to large copper pour or heatsink; serves dual role of electrical return and primary heat extraction path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications including 125 °C junction operation and temperature cycling |
| RTCA DO-160G Waveform 4/5A compliance | Clamps 6.4/69 μs and 40/120 μs transients up to Level 5 (short distance) without degradation |
| Moisture Sensitivity Level 1 | No dry pack or bake-out required before reflow - compatible with standard SMT assembly lines |
| 3σ lot norm screening on ID | Ensures <10 µA leakage across production lots, critical for low-power always-on avionics modules |
| RoHS-compliant matte-tin plating | Enables lead-free reflow (260 °C, 10 s) with MIL-STD-750 Method 2026 solderability |
Applications
| Aerospace Power Distribution | Automotive Load Dump Protection |
|---|---|
Use Scenario: 28 V DC distribution bus in commercial aircraft avionics bays exposed to multi-stroke lightning per DO-160G Section 22. IC Role / Device Role / Timing Role: Primary clamping device placed at bus entry point to limit transient voltage to <70 V during 36 kW surges. Use Value: Eliminates need for series Zener stacks or hybrid TVS+MOV solutions - reduces BOM count and layout area by 40%. |
Use Scenario: 12 V/24 V alternator output line in heavy-duty trucks experiencing 120 V/200 ms load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS shunting surge energy directly to chassis ground via metal-base thermal path. Use Value: Withstands ≥1000 cycles of 120 V/200 ms pulses without parameter shift - extends system field life beyond 15 years. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: 400 V DC link in variable-frequency drives subjected to IGBT switching transients and EFT bursts. IC Role / Device Role / Timing Role: Secondary protection stage after MOV, clamping fast dv/dt spikes (<100 ps) that bypass slower protectors. Use Value: Reduces MOSFET failure rate by 92% in field-deployed drives operating in high EMI environments. |
Use Scenario: 48 V signaling lines in European mainline railway interlocking systems requiring EN 50121-3-2 compliance. IC Role / Device Role / Timing Role: Bidirectional-capable variant (MPLAD36KP43CA/TR) used for differential pair protection with matched clamping. Use Value: Maintains signal integrity under 4 kV ESD contact discharge while adding <0.5 pF capacitance per line. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Lower peak power (600 W), higher RθJA (65 °C/W), no AEC-Q101 or DO-160G validation | Suitable only for consumer-grade 43 V circuits with single-event surge exposure | Select SMBJ43A only for cost-sensitive non-automotive/non-aerospace designs where 36 kW rating is unnecessary |
| SMCJ43A | Same 1500 W rating as SMBJ but still 24× lower than MPLAD36KP43A/TR; lacks metal-base thermal path | Limited to industrial control panels with moderate ambient temperature rise | Choose SMCJ43A if board space allows larger SMC package and thermal management relies solely on PCB copper |
Compared with SMBJ43A and SMCJ43A, the MPLAD36KP43A/TR delivers 60× higher surge capacity, 65× lower junction-to-case thermal resistance, and certified compliance with aviation and automotive reliability standards - making it irreplaceable in safety-critical power rail protection where single-point failure is unacceptable.
Availability
MPLAD36KP43A/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, and industrial motor drive DC link applications requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP43A/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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and power management solutions for aerospace, defense, and industrial markets.
The MPLAD36KP43A/TR belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for multi-stroke lightning immunity and automotive load dump survival in mission-critical power systems.
FAQ
What is the maximum peak pulse current rating for MPLAD36KP43A/TR?
The MPLAD36KP43A/TR is rated for 519 A peak impulse current (IPP) at 10/1000 μs waveform, corresponding to its 36,000 W peak pulse power capability. This value is measured per IEC 61000-4-5 test conditions and confirmed across production lots with surge testing to 1000 A - ensuring margin for real-world lightning transients. The MPLAD36KP43A/TR maintains this rating with clamping voltage held to 69.4 V.
Does MPLAD36KP43A/TR meet AEC-Q101 requirements for automotive use?
Yes, MPLAD36KP43A/TR is fully AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling, and unbiased highly accelerated stress testing (uHAST). It is approved for under-hood and chassis applications with junction temperatures up to +150 °C. The MPLAD36KP43A/TR also complies with ISO 7637-2 for load dump immunity, supporting 12 V and 24 V vehicle architectures.
How does the PLAD package of MPLAD36KP43A/TR improve thermal performance?
The PLAD package uses a metal base as the cathode terminal, providing direct thermal conduction from the silicon junction to the PCB copper pour or external heatsink. With RθJC = 1.0 °C/W and RθJA = 50 °C/W on FR4 (1 oz Cu), the MPLAD36KP43A/TR achieves 50× better junction-to-case heat transfer than standard SMC/SMB packages. This allows sustained power dissipation up to 504 W at TC = 100 °C - critical for repeated surge events.
Can MPLAD36KP43A/TR be used for bidirectional transient protection?
No - MPLAD36KP43A/TR is unidirectional, indicated by the "A" suffix. For bidirectional protection, the equivalent part is MPLAD36KP43CA/TR (with "CA" suffix), which provides symmetrical clamping for AC-coupled or differential signal lines. The MPLAD36KP43A/TR must be oriented with cathode to ground; reverse connection will cause catastrophic failure under normal bias.
What is the moisture sensitivity level (MSL) of MPLAD36KP43A/TR?
MPLAD36KP43A/TR is rated MSL Level 1 per IPC/JEDEC J-STD-020D.1, meaning it has unlimited floor life and requires no dry pack, baking, or special handling prior to reflow soldering. This simplifies manufacturing logistics and eliminates yield loss from moisture-related popcorning - a key advantage over MSL 3+ TVS devices in high-volume SMT lines.
MPLAD36KP43A/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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 519A
- 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
MPLAD36KP43A/TR FAQ
1.How can I place an order for MPLAD36KP43A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP43A/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 MPLAD36KP43A/TR reliable?
The price and inventory of MPLAD36KP43A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP43A/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP43A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP43A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP43A/TR?
MPLAD36KP43A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP43A/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 MPLAD36KP43A/TR?
For technical support, including MPLAD36KP43A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP43A/TR requirements.
6.How does Aetrix verify that MPLAD36KP43A/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP43A/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 MPLAD36KP43A/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP43A/TR?
All MPLAD36KP43A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP43A/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 MPLAD36KP43A/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP43A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP43A/TR Tags
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