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Microchip Technology MPLAD36KP75CA/TR
- Part No.:
- MPLAD36KP75CA/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP75CA/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:6,198
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Product details
Overview
MPLAD36KP75CA/TR from Microsemi (now Microchip) is a bidirectional surface-mount transient voltage suppressor (TVS) rated for 36,000 W peak pulse power at 10/1000 μs, with 75 V working standoff voltage (VWM), 83.3–92.1 V breakdown voltage (VBR), and 121 V clamping voltage (VC) at 298 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 MPLAD36KP75CA/TR datasheet, MPLAD36KP75CA/TR pinout, MPLAD36KP75CA/TR application, or MPLAD36KP75CA/TR equivalent, this device is selected for high-energy surge suppression where low thermal resistance (RθJC = 1.0 °C/W), bidirectional polarity, AEC-Q101 qualification, and Level 1 moisture sensitivity are critical design requirements.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transients above its VWM, delivering sub-5 ns response time in bidirectional configuration with clamping voltage tightly bounded at 121 V under 298 A (10/1000 μs). Its PLAD package integrates a metal base acting as cathode terminal, enabling direct thermal coupling to PCB copper for efficient heat dissipation.
Designed for multi-stroke lightning compliance, it supports IEC 61000-4-5 testing at 2 Ω, 12 Ω, and 42 Ω source impedances across Class 1–5, and meets RTCA/DO-160G Waveform 4 (6.4/69 μs) Level 4–5 and Waveform 5A (40/120 μs) Level 4–5 pin injection requirements - all verified per lot surge testing and 3σ standby current screening.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V maximum continuous reverse standoff voltage - sets minimum system operating voltage margin before clamping initiates |
| VBR | 83.3–92.1 V at 5 mA - defines precise avalanche onset range for predictable turn-on behavior |
| VC | 121 V at IPP = 298 A (10/1000 μs) - limits downstream voltage stress during worst-case surge events |
| PPP | 36,000 W peak pulse power - enables single-device protection against high-energy lightning-induced transients |
| RθJC | 1.0 °C/W junction-to-case thermal resistance - allows direct mounting to heatsink or thick copper plane for sustained power handling |
| ID | ≤10 µA at VWM - ensures negligible leakage current in standby, preserving signal integrity and low-power operation |
| αV(BR) | 98 mV/°C temperature coefficient - quantifies voltage drift over temperature for precision clamping stability |
Pinout & Package
The MPLAD36KP75CA/TR uses the PLAD surface-mount package: void-free UL94V-0 epoxy body with metal base acting as cathode terminal; total weight ≈1.7–2.0 g; RoHS-compliant matte-tin plating on terminals; marked with full part number on body; available in tape-and-reel (TR suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Metal Base (Bottom) | Cathode | Primary heat path and electrical return - must be soldered to large copper pour or heatsink for thermal management |
| Top Surface Pad | Anode | Signal-side connection point - routed to protected line (e.g., aircraft bus, automotive power rail) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Clamps positive and negative transients symmetrically without polarity dependency - essential for AC-coupled or floating systems |
| AEC-Q101 qualification | Validated reliability for automotive powertrain and chassis applications including load dump and jump-start conditions |
| RTCA DO-160 Section 22 compliance | Proven multi-stroke lightning survivability in aircraft avionics - exceeds commercial aviation certification thresholds |
| Moisture Sensitivity Level 1 | No dry pack or baking required before reflow - simplifies SMT assembly and reduces manufacturing cost |
| Lot-level surge testing | Every production lot verified for 36 kW pulse capability - eliminates post-production screening overhead |
Applications
| Aircraft Power Bus Protection | Automotive 48 V DC Distribution |
|---|---|
Use Scenario: Protecting 28 V and 270 V DC aircraft power buses from lightning-induced surges per RTCA DO-160G Waveform 4 and 5A. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed at bus entry points to limit transient overvoltage to <121 V. Use Value: Enables compliance with Level 4/5 pin injection requirements up to 300 V VWM variants - MPLAD36KP75CA/TR covers mid-range 75 V bus nodes. | Use Scenario: Safeguarding 48 V mild-hybrid vehicle power distribution networks against load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary surge suppression device on main battery feed, coordinated with upstream fusing and downstream DC-DC converters. Use Value: Withstands 298 A peak current and 36 kW pulses while maintaining <10 µA leakage - preserves efficiency in always-on subsystems. |
| Industrial Ethernet Port Protection | Railway Signaling Interface |
Use Scenario: Secondary protection for PoE++ (IEEE 802.3bt) data lines exposed to induced surges in factory automation environments. IC Role / Device Role / Timing Role: Back-to-back TVS pair (bidirectional) placed after gas discharge tube (GDT) front-end for staged clamping. Use Value: Sub-5 ns response ensures fast clamping before GDT fires, reducing let-through energy to <121 V - protects PHY ICs with 1.8/3.3 V I/O. | Use Scenario: Protecting 75 V signaling circuits in ERTMS/ETCS Level 2 trackside equipment from traction current coupling and lightning ground potential rise. IC Role / Device Role / Timing Role: Standoff-rated TVS on 75 V logic interface lines, mounted directly to chassis-grounded copper plane. Use Value: RθJC = 1.0 °C/W enables stable operation under repeated 10/1000 μs surges - validated for IEC 61000-4-5 Class 4 at 42 Ω source impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Lower peak power rating (600 W), smaller SMB package, higher RθJA (110 °C/W), no AEC-Q101 or DO-160 qualification | Consumer-grade board-level ESD/EFT protection only - unsuitable for lightning or automotive load dump | Select when cost and board space constrain requirements and surge energy remains below 100 J |
| SMCJ75CA | Higher peak power (1500 W), larger SMC package, RθJC = 2.5 °C/W, AEC-Q101 qualified but not DO-160 tested | Automotive body electronics and industrial PLC I/O - lacks multi-stroke lightning validation for avionics | Select for automotive non-safety-critical modules needing robust 1.5 kW surge handling without certification overhead |
Compared with SMBJ75CA and SMCJ75CA, the MPLAD36KP75CA/TR delivers 24× and 24× higher peak pulse power respectively, with certified DO-160 compliance and superior thermal performance - making it the only option for certified airborne lightning protection at 75 V standoff.
Availability
MPLAD36KP75CA/TR is available at Aetrix Electronics and suitable for aircraft avionics integration, automotive 48 V power systems, industrial Ethernet infrastructure, and railway signaling applications requiring stable component supply across extended product lifecycles.
Supply support for MPLAD36KP75CA/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 MPLAD36KP75CA/TR belongs to Microsemi's high-power PLAD-series TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical transportation systems where thermal robustness and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP75CA/TR at its rated peak pulse current?
The MPLAD36KP75CA/TR has a maximum clamping voltage (VC) of 121 V when subjected to its rated peak impulse current of 298 A under the standard 10/1000 μs waveform. This value is measured across the device terminals during surge testing and defines the upper voltage limit imposed on protected circuitry during worst-case transients. The low clamping ratio (VC/VWM ≈ 1.61) reflects optimized avalanche characteristics for reliable overvoltage limiting in 75 V systems.
Is MPLAD36KP75CA/TR suitable for automotive applications?
Yes, MPLAD36KP75CA/TR is AEC-Q101 qualified and rated for automotive load dump protection, supporting 48 V mild-hybrid architectures. Its 75 V working standoff voltage aligns with nominal 48 V bus derating requirements, and its 36 kW pulse rating handles ISO 7637-2 Pulse 5a/b energy levels. Unlike standard automotive TVS diodes, it also provides certified multi-stroke lightning resilience - making it appropriate for premium EV power distribution and chassis control units where both standards apply.
Does MPLAD36KP75CA/TR require special PCB layout considerations?
Yes, MPLAD36KP75CA/TR demands optimized thermal and electrical layout: the metal base (cathode) must be soldered to a ≥25 mm² copper pour or external heatsink to leverage its 1.0 °C/W RθJC; anode and cathode traces should be short and wide to minimize inductance; and the recommended pad layout per Figure 7 must be followed to ensure mechanical reliability and thermal transfer. Avoid thermal relief on cathode pads, and use ≥2 oz copper for high-current paths.
How does the CA suffix affect the functionality of MPLAD36KP75CA/TR?
The "CA" suffix denotes bidirectional construction, meaning MPLAD36KP75CA/TR clamps transients of either polarity symmetrically - unlike unidirectional "A" variants that only protect against reverse-biased surges. This enables use on AC-coupled lines, floating interfaces, or differential buses without polarity concerns. Internally, it consists of two back-to-back avalanche diodes sharing the same PLAD package, resulting in identical VWM, VBR, and VC for both directions - confirmed by test data in Table 4 of the datasheet.
What certifications does MPLAD36KP75CA/TR meet beyond AEC-Q101?
In addition to AEC-Q101 qualification, MPLAD36KP75CA/TR is verified for RTCA DO-160G Section 22 multi-stroke lightning testing (Waveform 4 and 5A), IEC 61000-4-5 (surge immunity at 2/12/42 Ω source impedances), and IEC 61000-4-2/4-4 (ESD and EFT). It also complies with IPC/JEDEC J-STD-020D.1 Moisture Sensitivity Level 1 and RoHS Directive 2011/65/EU. All certifications are lot-tested, not sample-validated.
MPLAD36KP75CA/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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 298A
- 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
MPLAD36KP75CA/TR FAQ
1.How can I place an order for MPLAD36KP75CA/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP75CA/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 MPLAD36KP75CA/TR reliable?
The price and inventory of MPLAD36KP75CA/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP75CA/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP75CA/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP75CA/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP75CA/TR?
MPLAD36KP75CA/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP75CA/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 MPLAD36KP75CA/TR?
For technical support, including MPLAD36KP75CA/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP75CA/TR requirements.
6.How does Aetrix verify that MPLAD36KP75CA/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP75CA/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 MPLAD36KP75CA/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP75CA/TR?
All MPLAD36KP75CA/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP75CA/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 MPLAD36KP75CA/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP75CA/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP75CA/TR Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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