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Microchip Technology MPLAD36KP33CA/TR
- Part No.:
- MPLAD36KP33CA/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP33CA/TR.pdf
- Description:
- SURFACE MOUNT 36,000 WATT, TVS,
- Quantity:
- Payment:
- Shipping:
Inventory:6,483
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Product details
Overview
MPLAD36KP33CA/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 33 V working standoff voltage (VWM), 36.7–40.6 V breakdown voltage (VBR), and 53.3 V clamping voltage (VC) at 676 A peak impulse current. It delivers lightning and load dump protection in aerospace avionics per RTCA DO-160 Section 22.
For engineers reviewing the MPLAD36KP33CA/TR datasheet, MPLAD36KP33CA/TR pinout, MPLAD36KP33CA/TR application, or MPLAD36KP33CA/TR equivalent, this device is selected for high-energy secondary lightning protection (IEC 61000-4-5 Class 1–5), RTCA DO-160G Waveform 4/5A pin injection suppression, and automotive ESD/EFT compliance-requiring verified bidirectional clamping, low thermal resistance (RθJC = 1.0 °C/W), and AEC-Q101 qualification.
Technical Context
This TVS diode operates in bidirectional avalanche mode to clamp both positive and negative transients symmetrically. Its PLAD package features a metal base acting as cathode for unidirectional variants and dual-anode/cathode terminals for bidirectional operation, enabling low-inductance surge path design.
It meets IEC 61000-4-5 with 2 Ω, 12 Ω, and 42 Ω source impedances across Classes 1–5, and supports RTCA DO-160G Waveform 4 (6.4/69 μs) up to Level 5 (≤300 V VWM) and Waveform 5A (40/120 μs) up to Level 4 (≤78 V VWM). Thermal derating is defined per Figure 3 for continuous power dissipation at TC = 100 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V DC - maximum continuous operating voltage before clamping onset; matches 24 V automotive and 28 V avionics bus systems. |
| VBR @ IBR | 36.7–40.6 V at 5 mA - ensures reliable turn-on margin above nominal bus voltage while avoiding false triggering. |
| VC @ IPP | 53.3 V at 676 A - limits downstream component stress during 10/1000 μs surges to safe levels for 36 V-rated ICs. |
| PPP | 36,000 W - enables single-device protection against multi-stroke lightning events without cascaded stages. |
| RθJC | 1.0 °C/W - allows direct mounting to heatsink for sustained energy absorption without thermal runaway. |
| ID @ VWM | 10 µA max - guarantees negligible leakage current in standby, critical for low-power sensor nodes and battery-backed systems. |
| AEC-Q101 | Qualified - validates reliability for automotive under-hood and chassis applications per stress test requirements. |
Pinout & Package
The MPLAD36KP33CA/TR uses the PLAD surface-mount package: void-free UL94V-0 epoxy body with metal base (cathode for unidirectional; dual symmetrical terminals for bidirectional), matte-tin-plated terminals, and ≈1.85 g weight. Cathode marking is absent on bidirectional parts; polarity is defined by symmetrical terminal layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode (Bidirectional) | One side of symmetrical avalanche junction; connects to protected line (e.g., CAN_H or RS-485 A). |
| Terminal 2 | Cathode (Bidirectional) | Other side of symmetrical junction; connects to protected line (e.g., CAN_L or RS-485 B); forms low-inductance clamping path. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction (CA suffix) | Clamps ± transients equally without external polarity routing-essential for differential buses like CAN, RS-485, and Ethernet PHY lines. |
| 36 kW peak pulse rating (10/1000 μs) | Handles full DO-160 Section 22 lightning stroke energy in one device, eliminating need for parallel TVS arrays or hybrid MOV-TPD designs. |
| RθJC = 1.0 °C/W | Enables >500 W steady-state dissipation when mounted on copper heatsink-supports repeated surge duty cycles in engine control units. |
| AEC-Q101 qualified | Validates robustness against temperature cycling, mechanical shock, and humidity exposure required for automotive powertrain and ADAS modules. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints-reduces manufacturing handling cost and avoids bake-out delays in SMT lines. |
Applications
| Aerospace Avionics Protection | Automotive Power Distribution |
|---|---|
Use Scenario: Protecting ARINC 429 data lines and MIL-STD-1553 bus terminations against induced lightning currents in aircraft fuselage wiring. IC Role / Device Role / Timing Role: Bidirectional voltage clamp limiting transient overvoltage to <55 V during DO-160G Waveform 4 (6.4/69 μs) Level 4/5 events. Use Value: Ensures deterministic bus recovery after multi-stroke lightning strikes without latch-up or parametric shift in line drivers. |
Use Scenario: Safeguarding 24 V battery-fed ECUs (e.g., ABS, BCM) from ISO 7637-2 Load Dump pulses and ISO 16750-2 jump-start transients. IC Role / Device Role / Timing Role: Primary surge suppression stage absorbing up to 36,000 W energy within 1000 μs, preventing MOSFET gate oxide rupture in power switches. Use Value: Eliminates need for upstream fusing or series impedance, maintaining low-voltage-drop power delivery during normal operation. |
| Industrial RS-485 Networks | Renewable Energy Inverter Control |
Use Scenario: Shielding long-haul RS-485 communication links in solar farm SCADA systems from ground potential rise and EFT coupling. IC Role / Device Role / Timing Role: Differential-line TVS providing matched clamping on A/B lines with <5 ns response time to preserve signal integrity at 10 Mbps. Use Value: Maintains common-mode rejection ratio (CMRR) during 4 kV EFT bursts (IEC 61000-4-4) without inducing data errors or receiver reset. |
Use Scenario: Protecting gate driver ICs and MCU I/O in 1000 VDC string inverters from fast-rising transients generated by IGBT switching and lightning-induced surges. IC Role / Device Role / Timing Role: Secondary clamping device placed at inverter control board inputs, limiting coupled transients to <60 V before reaching 3.3 V logic rails. Use Value: Prevents destructive latch-up in isolated gate drivers while sustaining >100,000 surge cycles per IEC 61000-4-5 endurance testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Lower PPP (600 W), higher VC (59.3 V), larger RθJA (65 °C/W), SMB package. | Limited to single-stroke IEC 61000-4-5 Class 3; unsuitable for DO-160G Level 4/5 or repetitive lightning. | Select SMBJ33CA only for cost-sensitive consumer-grade 24 V systems with infrequent transients. |
| SMCJ33CA | Intermediate PPP (1500 W), VC = 53.3 V, RθJA = 17 °C/W, SMC package. | Meets IEC 61000-4-5 Class 4 with 42 Ω source but fails DO-160G Waveform 4 Level 5 due to energy limitation. | Choose SMCJ33CA for industrial PLC I/O where space permits larger SMC footprint and multi-stroke capability is not required. |
Compared with SMBJ33CA and SMCJ33CA, the MPLAD36KP33CA/TR delivers 24× and 24× higher peak power handling respectively, enabling single-device compliance with aviation lightning standards and automotive load dump repetition requirements-without increasing PCB area or thermal management complexity.
Availability
MPLAD36KP33CA/TR is available at Aetrix Electronics and suitable for aerospace avionics, automotive power distribution, industrial RS-485 networks, and renewable energy inverter control requiring stable component supply across extended production lifecycles.
Supply support for MPLAD36KP33CA/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 MPLAD36KP33CA/TR belongs to Microsemi's high-power PLAD TVS family, engineered specifically for mission-critical surge protection in environments demanding DO-160, ISO 7637, and IEC 61000-4-5 compliance with minimal thermal overhead.
FAQ
What does the "CA" suffix indicate in MPLAD36KP33CA/TR?
The "CA" suffix in MPLAD36KP33CA/TR denotes bidirectional construction, meaning the device clamps voltage transients equally in both polarities-critical for protecting differential interfaces like CAN, RS-485, and Ethernet. Unlike unidirectional "A" variants, MPLAD36KP33CA/TR has symmetrical anode/cathode terminals and no polarity marking on the package body.
Is MPLAD36KP33CA/TR compliant with AEC-Q101 for automotive use?
Yes, MPLAD36KP33CA/TR is AEC-Q101 qualified, having passed stress tests including temperature cycling, mechanical shock, and humidity exposure. This certification validates its suitability for under-hood automotive applications such as engine control units and battery management systems where reliability under thermal and vibration stress is mandatory.
How does the PLAD package of MPLAD36KP33CA/TR improve thermal performance?
The PLAD package of MPLAD36KP33CA/TR features a metal base that serves as a low-thermal-resistance path (RθJC = 1.0 °C/W) from junction to heatsink. This enables efficient heat extraction during high-energy surges, supporting >500 W steady-state dissipation when mounted on copper and preventing thermal runaway during repetitive lightning strikes.
Can MPLAD36KP33CA/TR be used for RTCA DO-160G Section 22 lightning protection?
Yes, MPLAD36KP33CA/TR is explicitly validated for RTCA DO-160G Section 22 multi-stroke lightning protection. Its 36,000 W peak pulse rating and <5 ns response time meet Level 4 and Level 5 requirements for Waveform 4 (6.4/69 μs) on 33 V systems, making it suitable for avionics data bus and power line protection.
What is the maximum clamping voltage of MPLAD36KP33CA/TR at rated surge current?
The maximum clamping voltage (VC) of MPLAD36KP33CA/TR is 53.3 V at 676 A peak impulse current (IPP) under the 10/1000 μs waveform. This value ensures protected downstream components-such as 36 V-rated gate drivers or 5 V LDOs with sufficient headroom-remain within safe operating voltage limits during surge events.
MPLAD36KP33CA/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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 676A
- 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
MPLAD36KP33CA/TR FAQ
1.How can I place an order for MPLAD36KP33CA/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP33CA/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 MPLAD36KP33CA/TR reliable?
The price and inventory of MPLAD36KP33CA/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP33CA/TR is usually 5 days.
3.What payment methods are accepted for MPLAD36KP33CA/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP33CA/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP33CA/TR?
MPLAD36KP33CA/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP33CA/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 MPLAD36KP33CA/TR?
For technical support, including MPLAD36KP33CA/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP33CA/TR requirements.
6.How does Aetrix verify that MPLAD36KP33CA/TR is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP33CA/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 MPLAD36KP33CA/TR meets industry standards.
7.What is the process for return or replacement of MPLAD36KP33CA/TR?
All MPLAD36KP33CA/TR units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP33CA/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 MPLAD36KP33CA/TR part is unused and in its original packaging.
Return procedure for MPLAD36KP33CA/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP33CA/TR Tags
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