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Microchip Technology MXDA3KP18CA
- Part No.:
- MXDA3KP18CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXDA3KP18CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:9,613
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Product details
Overview
MXDA3KP18CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array in a surface-mount DO-214AB package, designed for secondary lightning protection per IEC61000-4-5 with 12 Ω and 2 Ω source impedances (Class 1–4 and Class 2–4 respectively), ESD/EFT suppression per IEC61000-4-2/4-4, and inductive switching transient clamping. It features 18 V standoff voltage (VWM), 20.0–22.1 V breakdown (V(BR)), 29.2 V max clamping at 102.8 A IPP, and operates from –55 °C to +150 °C.
For engineers reviewing the MXDA3KP18CA datasheet, MXDA3KP18CA pinout, MXDA3KP18CA application, or MXDA3KP18CA equivalent, key selection criteria include bidirectional polarity, 102.8 A peak pulse current rating, 29.2 V clamping voltage at rated surge, IEC61000-4-5 Class 4 compliance with 12 Ω source impedance, and DO-214AB mechanical compatibility for high-reliability industrial power interfaces.
Technical Context
This TVS array uses silicon avalanche diode technology to provide sub-nanosecond response (<5 ns) to transients, enabling protection of downstream ICs against fast-rising ESD and EFT events. Its bidirectional construction allows symmetrical clamping across AC lines or differential signal paths without polarity constraints.
The device is surge-tested per 10/1000 µs waveform, delivers 3000 W peak pulse power, and maintains stable clamping performance under temperature derating per Figure 3 - retaining ≥80% of rated PPP up to +100 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18 V - maximum continuous working voltage before clamping begins; matches 15 V nominal DC bus or 12 V AC RMS systems. |
| V(BR) min/max | 20.0–22.1 V - guaranteed avalanche onset range at 1 mA; ensures predictable turn-on margin above VWM. |
| VC @ IPP | 29.2 V - maximum clamped voltage at 102.8 A peak pulse; defines worst-case overvoltage seen by protected circuitry. |
| IPP | 102.8 A - peak impulse current supported at 10/1000 µs; validates immunity to IEC61000-4-5 Level 4 (2 Ω/12 Ω source). |
| TJ range | –55 to +150 °C - extended thermal operating envelope suitable for under-hood automotive or industrial power supply environments. |
| Response time | <5 ns - enables effective suppression of ESD (IEC61000-4-2) and EFT (IEC61000-4-4) transients. |
| Moisture level | IPC/JEDEC J-STD-020B Level 1 - no dry pack required; simplifies SMT assembly and reduces handling overhead. |
Pinout & Package
MXDA3KP18CA is housed in a DO-214AB (SMC) plastic package with void-free thermosetting epoxy body (UL94V-0), matte-tin plated terminals, and polarity defined by a dot marking indicating Pin 1 (cathode for unidirectional variants; symmetric dual cathodes for bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input terminal for negative-going transients | Connects to line under protection; forms one side of bidirectional clamping path. |
| Cathode (Pin 2) | Input terminal for positive-going transients | Connects to same line as Pin 1; completes symmetrical clamping structure with Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or floating differential signals without external polarity management. |
| 3000 W peak pulse power | Supports robust immunity to high-energy surges including secondary lightning per IEC61000-4-5 Class 4 (12 Ω source). |
| MIL-PRF-19500 screening option | Available for high-reliability programs requiring wafer lot traceability, 3σ ID screening, and conformance inspection. |
| Sub-5 ns response | Clamps ESD events before sensitive logic or analog inputs are damaged, meeting IEC61000-4-2 Level 4 requirements. |
| DO-214AB footprint | Standardized SMC package enables drop-in replacement in existing layouts and supports automated reflow assembly. |
Applications
| Industrial Motor Drives | Telecom Power Interfaces |
|---|---|
Use Scenario: Protection of 24 V DC control inputs against inductive kickback from relay coils and contactor switching. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed across input terminals to limit transient overvoltage to ≤29.2 V. Use Value: Prevents latch-up or permanent damage to microcontroller GPIOs and optocoupler inputs during frequent switching cycles. | Use Scenario: Surge protection on -48 V telecom power feeds exposed to lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Primary front-end TVS for secondary lightning protection per IEC61000-4-5 with 12 Ω source impedance (Class 4). Use Value: Limits surge energy delivered to upstream DC/DC converters and monitoring circuitry while maintaining system uptime. |
| Automotive Body Control Modules | Medical Imaging Power Supplies |
Use Scenario: Clamping transients on LIN bus lines and sensor supply rails in under-hood ECUs subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional transient suppressor mounted at connector entry point to shunt surge current away from ASICs. Use Value: Ensures functional safety compliance by limiting voltage excursions to <30 V during 100 V/50 ms load dump events. | Use Scenario: Protection of high-voltage DC rails (±15 V to ±24 V) supplying X-ray detector bias circuits from EFT bursts during hospital equipment operation. IC Role / Device Role / Timing Role: Fast-response TVS placed adjacent to precision voltage regulators to prevent regulator latch-up or output collapse. Use Value: Maintains imaging accuracy by eliminating transient-induced noise spikes that corrupt analog signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18CA | 600 W PPP rating, 10.2 A IPP, same DO-214AA package but lower surge capacity. | Limited to IEC61000-4-5 Class 2 (2 Ω source); insufficient for Class 4 lightning protection. | Select when cost-sensitive designs require basic ESD/EFT protection without secondary lightning compliance. |
| SMCJ18CA | 1500 W PPP rating, 62.0 A IPP, DO-214AB package identical to MXDA3KP18CA. | Meets IEC61000-4-5 Class 3 (12 Ω source) but not Class 4; lower clamping voltage (29.2 V vs. 29.2 V same) but reduced energy handling. | Choose where PCB space allows same footprint but system-level surge testing confirms 1500 W sufficiency. |
Compared with SMBJ18CA and SMCJ18CA, MXDA3KP18CA delivers 2× and 2× higher peak pulse power respectively, enabling validated Class 4 secondary lightning protection - critical for infrastructure-grade power interfaces where failure risk must be minimized.
Availability
MXDA3KP18CA is available at Aetrix Electronics and suitable for industrial motor drives, telecom power interfaces, and automotive body control modules requiring stable component supply, long-term lifecycle support, and MIL-PRF-19500 screening capability.
Supply support for MXDA3KP18CA 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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The MDA3KP series was developed to deliver military-grade transient suppression in commercial surface-mount packages, targeting applications demanding IEC61000-4-5 compliance, extended temperature operation, and full lot traceability.
FAQ
What is the clamping voltage of MXDA3KP18CA at its rated peak pulse current?
The MXDA3KP18CA has a maximum clamping voltage (VC) of 29.2 V at its rated peak pulse current (IPP) of 102.8 A under 10/1000 µs waveform conditions. This value represents the worst-case overvoltage imposed on protected circuitry during a full-rated surge event and is measured per standard TVS test methodology defined in the datasheet.
Is MXDA3KP18CA suitable for IEC61000-4-5 Class 4 secondary lightning protection?
Yes, MXDA3KP18CA is explicitly rated for IEC61000-4-5 Class 4 secondary lightning protection with both 12 Ω and 2 Ω source impedances, as confirmed in the Applications/Benefits section of the RF01243 datasheet. Its 3000 W peak pulse power and 102.8 A IPP meet the energy thresholds required for this classification.
What does the 'C' suffix in MXDA3KP18CA indicate?
The 'C' suffix in MXDA3KP18CA denotes bidirectional polarity, meaning the device provides symmetrical clamping for both positive and negative transients across its two terminals. This differs from unidirectional variants (e.g., MXDA3KP18A), which clamp only in one direction and require correct orientation in-circuit.
What package type is used for MXDA3KP18CA and what are its key mechanical attributes?
MXDA3KP18CA uses the DO-214AB (SMC) surface-mount package, featuring a void-free UL94V-0 thermosetting epoxy body, matte-tin plated terminals compliant with MIL-STD-750 Method 2026, and a dot marking to identify Pin 1. Its dimensions are 21.03–22.05 mm length × 6.86–7.87 mm width × 8.64–9.65 mm height.
Does MXDA3KP18CA require moisture-sensitive handling prior to reflow soldering?
No, MXDA3KP18CA is rated IPC/JEDEC J-STD-020B Level 1 for moisture sensitivity, meaning it does not require dry pack storage or baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates moisture-related defects such as popcorning during assembly.
MXDA3KP18CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 16-SMD, Gull Wing
- Series:
- MDA
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 8
- Voltage - Reverse Standoff (Typ):
- 18V
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 29.2V
- Current - Peak Pulse (10/1000µs):
- 102.8A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
MXDA3KP18CA FAQ
1.How can I place an order for MXDA3KP18CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MXDA3KP18CA 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 MXDA3KP18CA reliable?
The price and inventory of MXDA3KP18CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXDA3KP18CA is usually 5 days.
3.What payment methods are accepted for MXDA3KP18CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXDA3KP18CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXDA3KP18CA?
MXDA3KP18CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXDA3KP18CA 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 MXDA3KP18CA?
For technical support, including MXDA3KP18CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXDA3KP18CA requirements.
6.How does Aetrix verify that MXDA3KP18CA is sourced from the original manufacturer or authorized distributors?
All MXDA3KP18CA 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 MXDA3KP18CA meets industry standards.
7.What is the process for return or replacement of MXDA3KP18CA?
All MXDA3KP18CA units undergo pre-shipment inspection (PSI). If there is an issue with MXDA3KP18CA, 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 MXDA3KP18CA part is unused and in its original packaging.
Return procedure for MXDA3KP18CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXDA3KP18CA Tags
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