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Microchip Technology MPLAD36KP36A/TR
- Part No.:
- MPLAD36KP36A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP36A/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:7,310
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Product details
Overview
MPLAD36KP36A/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 36 V working standoff voltage (VWM), 40.0–44.2 V breakdown voltage (VBR), and 58.1 V clamping voltage (VC) at 620 A peak impulse current - designed for lightning and load dump protection in aerospace and automotive power rails.
For engineers reviewing the MPLAD36KP36A/TR datasheet, MPLAD36KP36A/TR pinout, MPLAD36KP36A/TR application, or MPLAD36KP36A/TR equivalent, key selection criteria include its 1.0 °C/W junction-to-case thermal resistance, <100 ps clamping response time, AEC-Q101 qualification, DO-160G Waveform 4/5A compliance, and RoHS-compliant matte-tin plating on thermosetting epoxy package.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transient overvoltages above its VWM threshold, delivering low-differential-resistance conduction during surge events. Its PLAD package features a metal base acting as cathode terminal, enabling direct thermal coupling to PCB copper pour or heatsink for efficient dissipation of 36 kW pulses.
It meets IEC 61000-4-5 (42 Ω, 12 Ω, 2 Ω source impedance) for Class 1–5 secondary lightning protection and RTCA/DO-160G Section 22 for multi-stroke lightning immunity. Standby leakage current is ≤10 µA at 36 V, and temperature coefficient of VBR is +38 mV/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous DC or repetitive peak reverse voltage the device blocks without clamping; must exceed circuit's normal operating voltage. |
| VBR @ IBR=5 mA | 40.0–44.2 V - Voltage at which avalanche conduction begins; defines minimum clamping onset threshold under standardized test conditions. |
| VC @ IPP=620 A | 58.1 V - Maximum voltage seen across protected line during 10/1000 μs surge; determines worst-case overvoltage stress on downstream ICs. |
| IPP | 620 A - Peak non-repetitive surge current the device safely clamps at rated waveform; directly tied to 36 kW power rating. |
| RθJC | 1.0 °C/W - Thermal resistance from junction to case; enables precise heatsinking design when mounting on copper pads or external heatsinks. |
| TJ Range | –55 to +150 °C - Operating junction temperature range; supports deployment in under-hood automotive and avionics environments. |
| αV(BR) | +38 mV/°C - Positive temperature coefficient ensures VBR increases with temperature, improving parallel device sharing stability. |
Pinout & Package
The MPLAD36KP36A/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 weight is ~1.7–2.0 g; polarity marking is via part number laser etch on body.
| 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 or heatsink for thermal management. |
| Top Metallization | Anode | Input side connection to protected line; routed with minimal trace inductance to preserve clamping speed. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Peak Pulse Power (10/1000 μs) | Enables single-device protection against severe transients like automotive load dump (ISO 7637-2 Pulse 5a) and DO-160G lightning. |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge testing per JEDEC standards. |
| DO-160G Waveform 4 & 5A Compliance | Meets aircraft-level pin-injection immunity requirements (6.4/69 μs and 40/120 μs) up to Level 5 for 36 V systems. |
| Moisture Sensitivity Level 1 | No dry pack or baking required before reflow; compatible with standard SMT assembly processes per J-STD-020D.1. |
| RoHS-compliant Matte-Tin Plating | Ensures reliable solderability and intermetallic formation with Pb-free and SnPb solder pastes per MIL-STD-750 Method 2026. |
Applications
| Aerospace Power Distribution | Automotive Engine Control Unit (ECU) |
|---|---|
Use Scenario: Protection of 28 V DC distribution buses in commercial aircraft against multi-stroke lightning per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary transient shunt element placed at bus entry point to limit voltage excursions below 60 V during 36 kW surges. Use Value: Enables compliance with DO-160G Level 5 pin injection (Waveform 4) while maintaining <100 ps response to preserve signal integrity in avionics sensors. |
Use Scenario: Load dump suppression on 12 V battery-fed ECU power inputs subjected to ISO 7637-2 Pulse 5a (120 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional clamping device connected between battery rail and ground, triggered only during overvoltage events. Use Value: Limits clamped voltage to 58.1 V at 620 A, protecting downstream 40 V-rated DC-DC converters and microcontrollers without derating margin loss. |
| Industrial Motor Drive DC Bus | Railway Signaling Interface |
Use Scenario: Surge protection on 36 V auxiliary DC bus feeding control logic in variable-frequency drives exposed to IEC 61000-4-5 surges. IC Role / Device Role / Timing Role: Secondary protection stage after upstream MOVs, handling fast-rising transients that bypass bulk clamping. Use Value: Delivers 1.0 °C/W thermal resistance to sustain repeated 36 kW pulses without thermal runaway when mounted on 2 oz Cu thermal pad. |
Use Scenario: EFT and lightning surge protection on 36 V signaling lines in EN 50121-4-compliant railway trackside equipment. IC Role / Device Role / Timing Role: Bidirectional-capable variant family member (unidirectional here) used in differential pair protection with matched VC tolerance. Use Value: Achieves IEC 61000-4-4 Level 4 (4 kV) and IEC 61000-4-5 Class 4 (42 Ω source) immunity with <5 ns clamping latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | Lower 600 W rating (vs. 36,000 W); DO-214AA package; RθJC = 40 °C/W (vs. 1.0 °C/W). | Not suitable for DO-160G lightning or automotive load dump; limited to board-level ESD/EFT. | Select SMBJ36A only for cost-sensitive consumer electronics where surge energy is <100 J and thermal mass is constrained. |
| SMCJ36A | 3,000 W rating (1/12× power); same PLASTIC SMC package footprint but lower thermal performance (RθJC = 2.5 °C/W). | Acceptable for ISO 7637-2 Pulse 1/2/3a but fails Pulse 5a validation; requires larger PCB area for thermal relief. | Choose SMCJ36A if system-level testing confirms 3 kW clamping suffices and layout cannot accommodate PLAD's 10.3 × 8.9 mm outline. |
Compared with SMBJ36A and SMCJ36A, the MPLAD36KP36A/TR delivers 12× and 12× higher peak power handling respectively, with 40× and 2.5× better thermal resistance - making it the only option qualified for certified multi-stroke lightning protection and sustained load dump events in safety-critical platforms.
Availability
MPLAD36KP36A/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive ECU protection, and industrial motor drive DC bus applications requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP36A/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) designs high-reliability semiconductor solutions for aerospace, defense, and industrial markets, with emphasis on radiation-hardened ICs, timing devices, and ruggedized discrete components.
The MPLAD36KP36A/TR belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for certified lightning and load dump immunity in mission-critical avionics and automotive systems.
FAQ
What is the clamping voltage of MPLAD36KP36A/TR at its rated peak pulse current?
The MPLAD36KP36A/TR has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current of 620 A under the 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The low VC relative to VBR reflects optimized avalanche dynamics for rapid energy diversion without overstressing downstream 40 V-rated components.
Is MPLAD36KP36A/TR suitable for bidirectional signal line protection?
No - the MPLAD36KP36A/TR is a unidirectional TVS diode, intended for DC power rail protection where polarity is fixed. For bidirectional AC or data line protection, Microsemi offers the MPLAD36KP36CA/TR variant with symmetrical breakdown characteristics. Using the unidirectional MPLAD36KP36A/TR on AC signals risks forward conduction during negative half-cycles, potentially causing latch-up or damage to upstream drivers.
Does MPLAD36KP36A/TR require special PCB layout considerations?
Yes - the MPLAD36KP36A/TR demands low-inductance, high-copper-area layout: its metal base (cathode) must connect to ≥25 mm² of 2 oz copper pour or external heatsink to maintain thermal resistance near the specified 1.0 °C/W. Anode traces should be short and wide (<5 mm length, >1 mm width) to minimize inductance that could degrade clamping response. Pad layout per Figure 7 in the datasheet is mandatory for DO-160G compliance.
What certifications does MPLAD36KP36A/TR hold for automotive use?
The MPLAD36KP36A/TR is AEC-Q101 qualified, covering stress tests including HTGB, H3TRB, TCT, and surge testing per JESD22-A114. It also meets ISO 7637-2 Pulse 5a load dump requirements when properly heatsunk, and supports IEC 61000-4-5 Class 4/5 immunity in vehicle sub-systems. However, full vehicle-level certification requires system-level validation per OEM-specific test plans.
Can MPLAD36KP36A/TR be used in parallel for higher current handling?
Parallel operation of MPLAD36KP36A/TR devices is not recommended without active current-sharing circuitry. Although its +38 mV/°C VBR temperature coefficient promotes modest inherent current sharing, parameter spread across lots and thermal coupling asymmetry can cause current imbalance exceeding 3:1. For >620 A requirements, select a higher-voltage variant (e.g., MPLAD36KP40A/TR) or consult Microchip's application engineering for validated multi-device layouts.
MPLAD36KP36A/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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 620A
- 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
MPLAD36KP36A/TR FAQ
1.How can I place an order for MPLAD36KP36A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP36A/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 MPLAD36KP36A/TR reliable?
The price and inventory of MPLAD36KP36A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP36A/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP36A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP36A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP36A/TR?
MPLAD36KP36A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP36A/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 MPLAD36KP36A/TR?
For technical support, including MPLAD36KP36A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP36A/TR requirements.
6.How does Aetrix verify that MPLAD36KP36A/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP36A/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 MPLAD36KP36A/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP36A/TR?
All MPLAD36KP36A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP36A/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 MPLAD36KP36A/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP36A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP36A/TR Tags
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