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Microchip Technology MPLAD36KP180CA
- Part No.:
- MPLAD36KP180CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MPLAD36KP180CA.pdf
- Description:
- TVS DIODE 180VWM 291VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:6,382
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Product details
Overview
MPLAD36KP180CA from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36 kW peak pulse power at 10/1000 μs, features a 180 V reverse standoff voltage (VWM), clamps transients to ≤291 V at 124 A peak pulse current (IPP), and meets RTCA DO-160 Section 22 multi-stroke lightning requirements.
For engineers reviewing the MPLAD36KP180CA datasheet, MPLAD36KP180CA pinout, MPLAD36KP180CA application, or MPLAD36KP180CA equivalent, this device is selected for secondary lightning protection per IEC 61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), pin-injection immunity per RTCA/DO-160F Waveform 4 (Level 4 up to 400 V), and ESD/EFT compliance per IEC 61000-4-2/4-4.
Technical Context
This bidirectional TVS operates without polarity constraints in AC-coupled or floating signal/power lines. Its silicon avalanche structure enables sub-5 ns response time and low clamping ratio (VC/V(BR) ≈ 1.37), with thermal resistance of 1.0 °C/W junction-to-case enabling high-repetition surge handling when mounted on heatsinked PCB pads.
It supports AEC-Q101 qualification and MIL-PRF-19500 upscreening options (MX/MXL levels), with moisture sensitivity level 1 (no dry pack required) and RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 36,000 W @ 10/1000 μs - sustains aircraft lightning-induced surges without failure |
| Reverse Standoff Voltage (VWM) | 180 V - maximum continuous operating voltage before conduction begins |
| Breakdown Voltage (V(BR)) | 200–221 V @ 5 mA - precise avalanche initiation threshold for predictable clamping onset |
| Max Clamping Voltage (VC) | 291 V @ 124 A IPP - limits downstream circuit voltage stress during worst-case surge |
| Peak Pulse Current (IPP) | 124 A @ 10/1000 μs - quantifies maximum surge current it safely shunts |
| Junction-to-Case Thermal Resistance | 1.0 °C/W - enables effective heat transfer to PCB copper or heatsink for repeated surges |
| Temperature Coefficient αV(BR) | 219 mV/°C - ensures stable breakdown voltage across -55°C to +150°C operating range |
Pinout & Package
Surface-mount PLAD package with metal base cathode (bidirectional symmetry eliminates polarity marking). Dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ~1.85 g. Void-free UL94V-0 epoxy body with annealed matte-tin terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Anode-side pad) | Avalanche junction anode connection | One side of symmetrical bidirectional structure; electrically identical to Terminal 2 |
| Terminal 2 (Cathode-side pad) | Avalanche junction cathode connection | Metal base under device body; provides low-inductance path and thermal conduction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional surge suppression | Enables use on AC lines or ungrounded buses without polarity concerns |
| RTCA DO-160F Waveform 4 Level 4 compliance | Withstands 6.4/69 μs pin-injection transients up to 400 V standoff-rated devices |
| IEC 61000-4-5 Class 5 secondary lightning protection | Validated for 42 Ω source impedance (short-distance aircraft wiring) |
| Low thermal resistance (1.0 °C/W) | Permits >1000 surge cycles at 0.05% duty factor when mounted per recommended pad layout |
| AEC-Q101 qualified | Meets stress-test requirements for automotive under-hood and powertrain applications |
Applications
| Aircraft Avionics Power Bus Protection | Automotive Load Dump Suppression |
|---|---|
Use Scenario: Protecting 28 V DC avionics distribution bus against induced lightning transients per RTCA DO-160 Section 22. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across bus inputs to divert multi-stroke surges away from downstream converters and controllers. Use Value: Enables compliance with Level 4 pin injection (Waveform 4) and Class 5 lightning (42 Ω) without derating - critical for flight-critical systems. | Use Scenario: Safeguarding engine control unit (ECU) power input during alternator load dump events in 12 V/24 V vehicles. IC Role / Device Role / Timing Role: Primary surge shunt on main power rail, activated within <5 ns to clamp voltage to ≤291 V before sensitive ICs experience overstress. Use Value: Prevents latch-up or permanent damage in microcontrollers and CAN transceivers during 120 V/400 ms transients per ISO 7637-2. |
| Industrial Motor Drive DC Link Protection | Railway Signaling Interface Protection |
Use Scenario: Shielding IGBT gate drivers and current sensors on DC link of 200–300 V motor drives from switching-induced transients. IC Role / Device Role / Timing Role: High-power TVS connected between DC+ and DC− rails to absorb commutation spikes and regenerative energy surges. Use Value: Withstands 36 kW pulses without degradation, maintaining clamping performance over 10⁵ surge cycles due to low thermal resistance. | Use Scenario: Protecting Ethernet PHY and RS-485 interfaces in trackside signaling cabinets exposed to induced surges from nearby traction currents. IC Role / Device Role / Timing Role: Bidirectional TVS on data line pairs to suppress common-mode transients while preserving signal integrity up to 100 Mbps. Use Value: Meets EN 50121-4 immunity requirements for railway EMC, including 2 Ω source impedance Class 4 testing (up to 130 V standoff). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | 600 W PPP rating (vs. 36,000 W); same 180 V VWM and bidirectional configuration | Not suitable for lightning-level surges; limited to board-level ESD/EFT only | Select SMBJ180CA only for cost-sensitive consumer electronics where surge energy is <10 J |
| SMCJ180CA | 1500 W PPP rating; larger SMC package; 1.5× higher RθJA (1.5 °C/W vs. 1.0 °C/W) | Acceptable for single-event automotive load dump but not multi-stroke lightning | Choose SMCJ180CA if PCB space allows larger footprint and thermal management is less constrained |
Compared with SMBJ180CA and SMCJ180CA, the MPLAD36KP180CA delivers 60× and 24× higher peak pulse power respectively, with superior thermal dissipation enabling repeated high-energy surge handling essential for aerospace and heavy-duty industrial deployments.
Availability
MPLAD36KP180CA is available at Aetrix Electronics and suitable for aircraft avionics, automotive powertrain, industrial motor drive, and railway signaling applications requiring stable component supply and long-term lifecycle support.
Supply support for MPLAD36KP180CA 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, and industrial markets.
The MPLAD36KP180CA belongs to Microsemi's high-power PLAD family, engineered specifically for mission-critical surge protection where multi-kilowatt transient energy, low thermal resistance, and aviation-grade reliability are mandatory.
FAQ
What is the clamping voltage of MPLAD36KP180CA at its rated peak pulse current?
The MPLAD36KP180CA has a maximum clamping voltage (VC) of 291 V at its rated peak pulse current (IPP) of 124 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and defines the upper voltage limit imposed on protected circuits during worst-case surge events. The MPLAD36KP180CA maintains this clamping performance across its full operating temperature range (-55°C to +150°C).
Is MPLAD36KP180CA suitable for automotive AEC-Q101 qualification requirements?
Yes, the MPLAD36KP180CA is tested and qualified to AEC-Q101 standards for discrete semiconductors. It undergoes stress tests including HTGB, HTRB, TST, and surge testing per the specification. The MPLAD36KP180CA's construction - void-free UL94V-0 epoxy, matte-tin terminations, and wafer-level lot traceability - satisfies all AEC-Q101 mechanical and reliability requirements for under-hood automotive applications.
Does MPLAD36KP180CA require special PCB layout considerations?
Yes, the MPLAD36KP180CA requires adherence to the recommended pad layout in RF01216 Rev B (page 6) to achieve specified thermal and surge performance. Minimum copper area of 11.94 mm × 5.85 mm per terminal, with thermal vias to inner ground planes, is necessary to maintain RθJC = 1.0 °C/W. Deviation from this layout degrades peak pulse power capability and increases clamping voltage drift under repeated surges. The MPLAD36KP180CA's metal-base construction makes thermal pad design critical.
How does MPLAD36KP180CA perform under RTCA DO-160F lightning test Waveform 4?
The MPLAD36KP180CA is rated for Level 4 pin-injection protection per RTCA DO-160F Waveform 4 (6.4/69 μs) up to 400 V standoff versions. For the MPLAD36KP180CA specifically, it meets Level 4 at 180 V VWM with no degradation after full test sequence. Performance is validated at 25°C ambient; MicroNote 132 specifies derating above 85°C ambient. The MPLAD36KP180CA's sub-5 ns response ensures clamping occurs before waveform peak.
Can MPLAD36KP180CA be used in bidirectional AC signal lines?
Yes, the 'CA' suffix confirms MPLAD36KP180CA is a bidirectional TVS, making it suitable for AC-coupled data lines (e.g., RS-485, CAN FD), transformer-isolated power, or floating DC buses where polarity reversal may occur. Its symmetrical V-I characteristic ensures identical clamping in both directions, with VC = 291 V for positive and negative surges. The MPLAD36KP180CA's low capacitance (<100 pF typical) avoids signal integrity issues in high-speed interfaces.
MPLAD36KP180CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 180V
- Voltage - Breakdown (Min):
- 200V
- Voltage - Clamping (Max) @ Ipp:
- 291V
- Current - Peak Pulse (10/1000µs):
- 124A
- Power - Peak Pulse:
- 36000W (36kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MPLAD36KP180CA FAQ
1.How can I place an order for MPLAD36KP180CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MPLAD36KP180CA 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 MPLAD36KP180CA reliable?
The price and inventory of MPLAD36KP180CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPLAD36KP180CA is usually 5 days.
3.What payment methods are accepted for MPLAD36KP180CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPLAD36KP180CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPLAD36KP180CA?
MPLAD36KP180CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPLAD36KP180CA 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 MPLAD36KP180CA?
For technical support, including MPLAD36KP180CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPLAD36KP180CA requirements.
6.How does Aetrix verify that MPLAD36KP180CA is sourced from the original manufacturer or authorized distributors?
All MPLAD36KP180CA 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 MPLAD36KP180CA meets industry standards.
7.What is the process for return or replacement of MPLAD36KP180CA?
All MPLAD36KP180CA units undergo pre-shipment inspection (PSI). If there is an issue with MPLAD36KP180CA, 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 MPLAD36KP180CA part is unused and in its original packaging.
Return procedure for MPLAD36KP180CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPLAD36KP180CA Tags
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