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Microchip Technology MPLAD36KP170A/TR
- Part No.:
- MPLAD36KP170A/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP170A/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:4,589
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Product details
Overview
MPLAD36KP170A/TR from Microsemi (now Microchip) is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power rails. It delivers 36,000 W peak pulse power at 10/1000 μs, clamps transients to ≤275 V at 131 A, and features a 170 V working standoff voltage (VWM) with 189–209 V breakdown range (VBR). It is qualified to AEC-Q101 and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP170A/TR datasheet, MPLAD36KP170A/TR pinout, MPLAD36KP170A/TR application, or MPLAD36KP170A/TR equivalent, this device is selected for high-reliability DC bus protection where low thermal resistance (RθJC = 1.0 °C/W), fast response (<100 ps turn-on), and stable clamping under repeated surges are critical - especially in avionics power distribution and 24/48 V vehicle systems.
Technical Context
This TVS diode operates in avalanche breakdown mode to shunt transient energy 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 characterized for 10/1000 μs waveform compliance per IEC 61000-4-5 and RTCA DO-160G Waveform 4 & 5A, with clamping voltage specified at peak impulse current (IPP = 131 A) and standby leakage limited to 10 µA at 170 V. Temperature coefficient of breakdown voltage is +207 mV/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous DC or repetitive peak reverse voltage the device blocks without conduction. |
| VBR @ IBR | 189–209 V at 5 mA - Confirmed avalanche onset range; ensures reliable triggering above system operating voltage. |
| VC @ IPP | 275 V at 131 A (10/1000 μs) - Clamped voltage seen by protected circuit during worst-case surge event. |
| IPP | 131 A - Peak non-repetitive surge current capability; defines maximum energy absorption (36 kW). |
| RθJC | 1.0 °C/W - Enables efficient heat transfer from junction to case; supports high-duty-cycle surge handling with external heatsinking. |
| ID max | 10 µA at VWM - Ultra-low leakage ensures minimal power loss and no false triggering in high-impedance bias networks. |
| αVBR | +207 mV/°C - Positive temperature coefficient allows parallel operation without thermal runaway. |
Pinout & Package
The MPLAD36KP170A/TR uses the PLAD surface-mount package: a low-profile, void-free thermosetting epoxy body with a metal base acting as the cathode terminal. The anode is accessed via the top-side metallized pad. Package weight is ~1.7–2.0 g; RoHS-compliant matte-tin plating ensures solderability per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary current return path and thermal interface; must be soldered to large copper area or heatsink for RθJC = 1.0 °C/W performance. |
| Top Metallized Pad | Anode | High-current surge entry point; connects to protected line (e.g., 24 V rail); requires minimum 10 mm² copper pour for IPP handling. |
Key Features
| Feature | Design Value |
|---|---|
| 36 kW Peak Pulse Power (10/1000 μs) | Enables single-device protection against severe lightning-induced transients (e.g., DO-160G Level 4/5) without cascaded stages. |
| AEC-Q101 Qualified | Validated for automotive under-hood applications including load dump (ISO 7637-2) and cold-crank conditions. |
| Moisture Sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to reflow; compatible with standard SMT assembly lines. |
| Traceable Wafer & Assembly Lots | Supports full lot traceability for aerospace and defense programs requiring AS9102/EN9100 compliance. |
| Low Thermal Resistance (RθJC = 1.0 °C/W) | Allows sustained surge duty cycles when mounted on heatsink-equipped PCBs; reduces risk of thermal failure during multi-pulse events. |
Applications
| Aerospace Power Distribution | Automotive 24 V DC Bus |
|---|---|
Use Scenario: Protection of avionics power converters and remote data acquisition units against DO-160G Section 22 lightning-induced surges on 28 V primary buses. IC Role / Device Role / Timing Role: Primary transient shunt device placed at board-level input filter stage; clamps waveforms 4 (6.4/69 μs) and 5A (40/120 μs) to safe levels. Use Value: Meets Level 4/5 pin-injection immunity without derating; eliminates need for secondary MOV-based protection layers. |
Use Scenario: Load dump suppression in commercial truck ECUs powered from 24 V alternator systems per ISO 7637-2 Pulse 5a/b. IC Role / Device Role / Timing Role: Unidirectional TVS connected between battery rail and ground; activated within <100 ps to clamp 120 V/350 ms transients. Use Value: Withstands ≥1000 surge cycles at 131 A without parameter shift; replaces bulkier TO-218 packages with 40% smaller footprint. |
| Industrial Motor Drive DC Link | Railway Signaling Interface |
Use Scenario: Surge protection on DC link capacitors of 400 V variable-frequency drives exposed to switching transients and EFT bursts. IC Role / Device Role / Timing Role: Secondary protection device downstream of IGBT gate drivers; clamps IEC 61000-4-4 EFT (4 kV) and 61000-4-5 (2 kV, 42 Ω source) events. Use Value: 275 V clamping voltage ensures MOSFET/IGBT gate oxide remains below 20 V stress margin during 131 A surges. |
Use Scenario: Input protection for 110 V DC trackside signaling controllers interfacing with long cable runs susceptible to induced lightning currents. IC Role / Device Role / Timing Role: Standoff-rated TVS on signal/power inputs; selected for 170 V VWM to tolerate nominal 110 V ±10% ripple while blocking surges up to 275 V. Use Value: Validated for IEC 61000-4-5 Class 4 (2 Ω source) at 130 V VWM variants; this 170 V version extends hold-off for higher-voltage signaling rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A | Lower peak power (600 W), smaller SMB package, RθJC = 40 °C/W, VC = 275 V @ 2.2 A. | Only suitable for low-energy ESD/EFT; cannot handle DO-160G lightning or automotive load dump. | Select only for cost-sensitive consumer electronics with sub-100 A surge requirements. |
| SMCJ170A | Higher peak power (1500 W), SMC package, RθJC = 15 °C/W, VC = 275 V @ 32 A. | Meets IEC 61000-4-5 Class 3 but fails DO-160G Level 4/5 and multi-stroke testing. | Use where space permits larger SMC footprint and 1500 W suffices - e.g., telecom power supplies. |
Compared with SMBJ170A and SMCJ170A, the MPLAD36KP170A/TR provides 24× and 24× higher peak power respectively, enabling single-device compliance with aviation lightning standards and automotive load dump - without increasing PCB area beyond its dedicated PLAD footprint.
Availability
MPLAD36KP170A/TR is available at Aetrix Electronics and suitable for aerospace power distribution, automotive 24 V DC bus protection, and industrial motor drive DC link applications requiring stable component supply across extended production lifecycles.
Supply support for MPLAD36KP170A/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 (acquired by Microchip Technology in 2018) 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 MPLAD36KP170A/TR belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for mission-critical surge protection where thermal robustness, multi-stroke endurance, and DO-160/ISO 7637 compliance are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP170A/TR at its rated peak pulse current?
The MPLAD36KP170A/TR has a maximum clamping voltage (VC) of 275 V when subjected to its rated peak pulse current (IPP) of 131 A under the 10/1000 μs waveform. This value is measured across the device terminals during standardized surge testing and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Is MPLAD36KP170A/TR suitable for bidirectional signal line protection?
No - the MPLAD36KP170A/TR is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only during reverse-biased overvoltage events and must be installed with cathode to ground. For bidirectional AC or data-line protection, select the MPLAD36KP170CA variant instead.
Does MPLAD36KP170A/TR require special handling for moisture sensitivity?
No - the MPLAD36KP170A/TR is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020D.1, meaning it can be stored and processed in ambient factory environments without dry packing or baking prior to reflow soldering.
How does the thermal performance of MPLAD36KP170A/TR compare to standard SMC/SMB TVS diodes?
The MPLAD36KP170A/TR achieves RθJC = 1.0 °C/W due to its metal-base PLAD package, which is 15–40× lower than typical SMC (15 °C/W) or SMB (40 °C/W) devices. This enables sustained surge duty cycles and eliminates thermal runaway risk when mounted on adequately sized copper heatsinks.
Can MPLAD36KP170A/TR be used in parallel for higher current handling?
Yes - its +207 mV/°C breakdown voltage temperature coefficient ensures inherent current sharing when multiple MPLAD36KP170A/TR units are paralleled. This allows scalable surge protection for >131 A applications, provided layout symmetry and thermal coupling are maintained across all devices.
MPLAD36KP170A/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):
- 170V
- Voltage - Breakdown (Min):
- 189V
- Voltage - Clamping (Max) @ Ipp:
- 275V
- Current - Peak Pulse (10/1000µs):
- 131A
- 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
MPLAD36KP170A/TR FAQ
1.How can I place an order for MPLAD36KP170A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP170A/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 MPLAD36KP170A/TR reliable?
The price and inventory of MPLAD36KP170A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP170A/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP170A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP170A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP170A/TR?
MPLAD36KP170A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP170A/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 MPLAD36KP170A/TR?
For technical support, including MPLAD36KP170A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP170A/TR requirements.
6.How does Aetrix verify that MPLAD36KP170A/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP170A/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 MPLAD36KP170A/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP170A/TR?
All MPLAD36KP170A/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP170A/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 MPLAD36KP170A/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP170A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP170A/TR Tags
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