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Microchip Technology MPLAD36KP170CA/TR
- Part No.:
- MPLAD36KP170CA/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP170CA/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:4,564
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Product details
Overview
MPLAD36KP170CA/TR from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 170 V working standoff voltage (VWM), 189–209 V breakdown voltage (VBR), and 275 V clamping voltage (VC) at 131 A peak impulse current - designed for secondary lightning protection in avionics per RTCA DO-160 Section 22 and IEC 61000-4-5.
For engineers reviewing the MPLAD36KP170CA/TR datasheet, MPLAD36KP170CA/TR pinout, MPLAD36KP170CA/TR application, or MPLAD36KP170CA/TR equivalent, key selection criteria include bidirectional polarity, low thermal resistance (RθJC = 1.0 °C/W), AEC-Q101 qualification, RoHS compliance (e3), and compatibility with FR4 PCBs using recommended pad layout per Figure 7.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transients, with sub-5 ns response time for bidirectional variants and a metal-base cathode configuration enabling efficient heat transfer to the PCB. Its PLAD package integrates void-free UL94V-0 epoxy and tin-plated terminals solderable per MIL-STD-750 Method 2026.
It meets multi-stroke lightning immunity per RTCA DO-160G Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs), supports IEC 61000-4-2 ESD and IEC 61000-4-4 EFT protection, and delivers stable performance across –55 °C to +150 °C junction temperature range with 3σ lot norm screening on standby current (ID).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system voltage margin. |
| VBR | 189–209 V at 5 mA - Breakdown threshold range defining turn-on consistency; ensures reliable clamping onset. |
| VC | 275 V at IPP = 131 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum stress level. |
| PPP | 36,000 W - Peak pulse power handling capacity; enables robust multi-stroke lightning protection without degradation. |
| RθJC | 1.0 °C/W - Junction-to-case thermal resistance; allows direct PCB copper pour heat sinking for sustained surge duty. |
| ID | ≤10 µA at VWM - Standby leakage current; minimizes quiescent power loss in high-impedance bias networks. |
| αV(BR) | 207 mV/°C - Temperature coefficient of breakdown voltage; enables predictable VBR drift over temperature for design margining. |
Pinout & Package
The MPLAD36KP170CA/TR uses the PLAD surface-mount package: a low-profile, thermally enhanced plastic case with metal base acting as the cathode terminal. Dimensions conform to Figure 6; recommended pad layout is specified in Figure 7 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and high-current return node; must be connected to large copper area for thermal management. |
| Top Surface Marking Area | Anode | Electrically isolated top surface; functions as anode contact via internal die bonding; no external terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Clamps positive and negative transients symmetrically - eliminates need for dual-device placement in AC-coupled or floating systems. |
| AEC-Q101 qualification | Validated reliability for automotive powertrain and chassis modules under temperature cycling, humidity, and mechanical shock stress. |
| Moisture Sensitivity Level 1 | No dry pack or baking required before reflow - reduces manufacturing overhead and avoids moisture-induced popcorning. |
| RTCA DO-160G Waveform 4 & 5A compliance | Meets Level 4/5 pin-injection immunity for aircraft avionics - enables single-device protection against induced transients on signal lines. |
| 3σ lot norm screening on ID | Ensures consistent low-leakage behavior across production lots - critical for battery-powered or high-impedance sensor interfaces. |
Applications
| Aircraft Avionics Power Input Protection | Automotive DC-DC Converter Input Stage |
|---|---|
Use Scenario: Protecting 28 V aircraft bus-fed flight control computers from lightning-induced surges per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Primary bidirectional clamping device placed directly at board edge connector input. Use Value: Withstands ≥3 strokes of 36 kW 10/1000 μs pulses while maintaining VC ≤ 275 V - prevents latch-up or damage to downstream DC-DC controllers. | Use Scenario: Safeguarding 12 V/24 V automotive DC-DC converters against load dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: High-energy transient shunt mounted upstream of input filter capacitor. Use Value: Delivers 131 A peak impulse current handling with RθJC = 1.0 °C/W - enables compact layout without external heatsink. |
| Industrial Ethernet PHY Port Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding Gigabit Ethernet PHYs on rail-side communication gateways from EFT and ESD per IEC 61000-4-4/4-2. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), placed adjacent to RJ45 magnetics. Use Value: Sub-5 ns response time and 275 V clamping limit ensure PHY ICs see <100 V transient overshoot - preserves signal integrity and link stability. | Use Scenario: Securing 110 V signaling circuits in European railway interlocking systems against induced surges per EN 50121-4. IC Role / Device Role / Timing Role: Bidirectional clamping element on trackside relay driver outputs. Use Value: 170 V VWM matches nominal 110 V DC system with 50% safety margin; 36 kW rating covers worst-case coupling events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | 600 W rating, SMB package, RθJC ≈ 15 °C/W, VC = 275 V at 2.2 A | Only suitable for low-energy ESD/EFT - cannot meet DO-160 lightning stroke requirements. | Select only for cost-sensitive consumer electronics where 36 kW surge immunity is unnecessary. |
| SMCJ170CA | 1500 W rating, SMC package, RθJC ≈ 3.5 °C/W, VC = 275 V at 5.5 A | Limited to single-stroke lightning or automotive load dump - lacks multi-stroke endurance and thermal margin. | Acceptable for non-avionic industrial controls with infrequent surge exposure and adequate heatsinking. |
Compared with SMBJ170CA and SMCJ170CA, the MPLAD36KP170CA/TR provides 24× and 24× higher peak power rating respectively, lower thermal resistance for repeated surges, and verified multi-stroke capability - making it the sole choice for DO-160-compliant avionics and mission-critical transportation systems.
Availability
MPLAD36KP170CA/TR is available at Aetrix Electronics and suitable for aircraft avionics, automotive powertrain modules, industrial Ethernet gateways, and railway signaling systems requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP170CA/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 analog, mixed-signal, and power semiconductors for aerospace, defense, communications, and industrial markets.
The MPLAD36KP170CA/TR belongs to Microsemi's high-power surface-mount TVS family engineered specifically for multi-stroke lightning protection in safety-critical platforms including commercial aircraft and rail infrastructure.
FAQ
What is the clamping voltage of MPLAD36KP170CA/TR at its rated peak pulse current?
The MPLAD36KP170CA/TR has a maximum clamping voltage (VC) of 275 V when subjected to its rated peak impulse current of 131 A under 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 MPLAD36KP170CA/TR maintains this clamping performance across its operational temperature range and after multiple surge strikes.
Is MPLAD36KP170CA/TR suitable for automotive applications per AEC-Q101?
Yes, the MPLAD36KP170CA/TR is explicitly AEC-Q101 qualified, confirming its reliability for automotive use in powertrain, chassis, and body electronics. It passes temperature cycling, humidity testing, mechanical shock, and surge endurance validation per the AEC-Q101 standard. The MPLAD36KP170CA/TR is commonly deployed in 12 V/24 V DC-DC converter inputs and motor control units where load dump protection is required.
How does the PLAD package of MPLAD36KP170CA/TR improve thermal performance compared to standard SMC or SMB packages?
The PLAD package of MPLAD36KP170CA/TR features a metal base that serves as both the cathode terminal and primary thermal path, achieving a junction-to-case thermal resistance (RθJC) of just 1.0 °C/W - over 10× lower than typical SMC packages (~3.5 °C/W) and ~15× lower than SMB packages (~15 °C/W). This enables direct PCB copper pour heat sinking, allowing the MPLAD36KP170CA/TR to sustain repeated 36 kW surges without thermal runaway.
Does MPLAD36KP170CA/TR meet RTCA DO-160G Section 22 lightning protection requirements?
Yes, the MPLAD36KP170CA/TR is specifically designed and validated for RTCA DO-160G Section 22 multi-stroke lightning protection. It meets Level 4 and Level 5 pin injection immunity for Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs) at 25 °C. Its 36,000 W rating, sub-5 ns response, and low clamping voltage make the MPLAD36KP170CA/TR a standard solution for aircraft avionics power and signal line protection.
What is the polarity designation and marking convention for MPLAD36KP170CA/TR?
The "CA" suffix in MPLAD36KP170CA/TR indicates bidirectional polarity. The device has no visible anode/cathode markings on the top surface; instead, the entire metal base (bottom side) is the cathode terminal, and the top surface functions as the anode. Polarity is confirmed by the CA suffix per Microsemi's nomenclature in Table 1 of the datasheet - ensuring correct orientation during PCB layout and assembly of the MPLAD36KP170CA/TR.
MPLAD36KP170CA/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:
- -
- Bidirectional Channels:
- 1
- 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
MPLAD36KP170CA/TR FAQ
1.How can I place an order for MPLAD36KP170CA/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP170CA/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 MPLAD36KP170CA/TR reliable?
The price and inventory of MPLAD36KP170CA/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP170CA/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP170CA/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP170CA/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP170CA/TR?
MPLAD36KP170CA/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP170CA/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 MPLAD36KP170CA/TR?
For technical support, including MPLAD36KP170CA/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP170CA/TR requirements.
6.How does Aetrix verify that MPLAD36KP170CA/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP170CA/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 MPLAD36KP170CA/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP170CA/TR?
All MPLAD36KP170CA/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP170CA/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 MPLAD36KP170CA/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP170CA/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP170CA/TR Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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