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Microchip Technology MXLDA3KP18CAE3
- Part No.:
- MXLDA3KP18CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP18CAE3.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,163
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Product details
Overview
MXLDA3KP18CAE3 from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array in a surface-mount DO-214AB package, designed for high-reliability secondary lightning and ESD protection. It features a 18 V reverse standoff voltage (VWM), 20.0–22.1 V breakdown voltage (V(BR)), 29.2 V maximum clamping voltage at 102.8 A peak pulse current, and operates from −55 °C to +150 °C.
For engineers reviewing the MXLDA3KP18CAE3 datasheet, MXLDA3KP18CAE3 pinout, MXLDA3KP18CAE3 application, or MXLDA3KP18CAE3 equivalent, key selection criteria include IEC61000-4-5 Class 1–4 compliance with 2/12/42 Ω source impedances, bidirectional polarity, RoHS-compliant matte-tin plating, and 100 ps response time - critical for telecom power rails, industrial I/O ports, and automotive body electronics.
Technical Context
The MXLDA3KP18CAE3 implements a silicon avalanche diode structure optimized for fast clamping under high-energy transients. Its bidirectional configuration enables symmetrical surge suppression on AC-coupled or differential signal lines without polarity concerns, and its 10/1000 μs waveform rating ensures validated performance against IEC61000-4-5 lightning surges.
It delivers 3000 W peak pulse power at 25 °C with full derating above 25 °C per Figure 3, and maintains ≤2 μA standby current at 18 V VWM. The device is surge-tested per lot and screened to MIL-PRF-19500 reliability standards upon request.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18 V - Maximum continuous operating voltage before clamping begins; matches 15 V nominal DC rails with 20% margin. |
| V(BR) min/max | 20.0–22.1 V - Confirmed avalanche onset range at 1 mA; ensures predictable turn-on across temperature and process variation. |
| VC @ IPP | 29.2 V at 102.8 A - Clamping voltage during 10/1000 μs surge; limits downstream IC stress to safe levels. |
| PPP | 3000 W @ 10/1000 μs - Peak power handling capability validated per Figure 1; supports Level 4 lightning immunity. |
| TJ/TSTG | −55 to +150 °C - Extended thermal range enables use in under-hood automotive or industrial enclosures. |
| ID @ VWM | ≤2 μA - Ultra-low leakage preserves battery life and avoids false triggering in low-power sensor interfaces. |
| Response time | <100 ps - Sub-nanosecond turn-on prevents ESD damage to sensitive analog front-ends or USB PHYs. |
Pinout & Package
MXLDA3KP18CAE3 is housed in a DO-214AB (SMC) plastic package with void-free UL94V-0 epoxy body, matte-tin plated terminals, and polarity marked by a dot indicating Pin 1 (cathode for unidirectional variants; symmetric for bidirectional). Weight ≈5 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (Bidirectional Terminal A) | One side of symmetrical TVS junction; connects to line under protection (e.g., RS-485 A). |
| Pin 2 | Cathode (Bidirectional Terminal B) | Other side of symmetrical TVS junction; connects to complementary line (e.g., RS-485 B) or ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables single-device protection of AC signals, differential buses (RS-485, CAN), or floating power domains without polarity constraints. |
| 3000 W peak pulse power | Validated clamping energy handling for IEC61000-4-5 Level 4 (42 Ω, 4 kV) and Level 3 (12 Ω, 2 kV) lightning surges. |
| MIL-PRF-19500 screening option | Supports high-reliability programs requiring wafer lot traceability, 3σ ID screening, and conformance inspection. |
| Moisture sensitivity Level 1 | No dry pack or bake-out required prior to reflow; simplifies SMT assembly and reduces manufacturing cost. |
| RoHS-compliant (e3) | Meets EU Directive 2011/65/EU with annealed matte-tin plating; compatible with lead-free and SnPb solder processes. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 24 V DC input stages against load dump and inductive switching spikes in PLC I/O modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between input terminal and ground plane, absorbing up to 3000 W surges. Use Value: Prevents latch-up or destruction of upstream DC-DC controllers and microcontrollers during field service or fault conditions. | Use Scenario: Surge suppression on LIN bus lines exposed to battery transients and ESD events in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS connected across LIN data pair (LIN-H/L), clamping both positive and negative transients. Use Value: Maintains LIN communication integrity during ISO 10605 30 kV ESD contact discharge and ISO 7637-2 Pulse 5a load dump. |
| Telecom Power Feeds | Medical Diagnostic Equipment Interfaces |
Use Scenario: Input protection for PoE-powered remote units subjected to induced surges from nearby AC mains or lightning coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS placed at primary DC input, coordinated with upstream fuses and downstream LC filters. Use Value: Limits clamping voltage to <29.2 V, ensuring compatibility with 36 V-rated DC-DC converters and avoiding overvoltage shutdown. | Use Scenario: ESD safeguarding of isolated analog sensor inputs (e.g., ECG leads) in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-leakage (≤2 μA) bidirectional TVS placed at connector interface, preserving signal fidelity and common-mode rejection. Use Value: Prevents ESD-induced calibration drift or ADC saturation while maintaining sub-pA bias current requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18CA | 600 W PPP rating, same VWM and bidirectional polarity, DO-214AA package (smaller footprint, lower thermal mass). | Limited to IEC61000-4-5 Class 2 (12 Ω) and ESD/EFT only; insufficient for Class 4 lightning. | Select when space-constrained and surge energy is ≤600 W; verify thermal dissipation in sealed enclosures. |
| 1.5KE18CA | 1500 W PPP, axial-leaded DO-15 package, higher mounting inductance, no RoHS e3 marking by default. | Not suitable for automated SMT; requires manual insertion and wave solder; lacks MIL-PRF-19500 screening path. | Choose for legacy through-hole designs or cost-sensitive non-automated production where 1500 W suffices. |
Compared with SMBJ18CA and 1.5KE18CA, MXLDA3KP18CAE3 provides double the surge energy handling of the former and twice the power rating of the latter, while enabling automated assembly, RoHS compliance, and optional high-reliability screening - making it optimal for new industrial and automotive designs demanding Class 4 immunity.
Availability
MXLDA3KP18CAE3 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MXLDA3KP18CAE3 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, mixed-signal, and radiation-hardened 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 where IEC61000-4-5 compliance, extended temperature operation, and lot-level traceability are mandatory.
FAQ
What is the clamping voltage of MXLDA3KP18CAE3 at its rated peak pulse current?
The MXLDA3KP18CAE3 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 is measured per Figure 2 in the RF01243 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Is MXLDA3KP18CAE3 suitable for IEC61000-4-5 Level 4 lightning surge testing?
Yes, MXLDA3KP18CAE3 is explicitly rated for IEC61000-4-5 Level 4 secondary lightning protection with 42 Ω source impedance, as confirmed in the Applications/Benefits section of RF01243 Rev B. Its 3000 W peak pulse power and 29.2 V clamping voltage meet the 4 kV test requirement when properly mounted with low-inductance layout.
Does MXLDA3KP18CAE3 require moisture baking before reflow soldering?
No, MXLDA3KP18CAE3 has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored indefinitely at ambient conditions and placed directly into reflow without dry pack or baking. This eliminates a process step and reduces risk of popcorn cracking during assembly.
What does the "C" in MXLDA3KP18CAE3 indicate?
The "C" suffix in MXLDA3KP18CAE3 denotes bidirectional polarity, confirming symmetrical avalanche behavior across both terminals. This allows the device to suppress positive and negative transients equally - essential for protecting differential buses like RS-485, CAN, or LIN without polarity orientation concerns.
Can MXLDA3KP18CAE3 replace unidirectional TVS diodes in existing designs?
MXLDA3KP18CAE3 can replace unidirectional TVS diodes only if the circuit topology supports bidirectional clamping - such as across differential pairs or AC-coupled lines. In single-ended DC rail protection, a unidirectional device may offer lower leakage; verify standby current (≤2 μA for MXLDA3KP18CAE3) and clamping symmetry match system requirements before substitution.
MXLDA3KP18CAE3 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:
- -
MXLDA3KP18CAE3 FAQ
1.How can I place an order for MXLDA3KP18CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP18CAE3 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 MXLDA3KP18CAE3 reliable?
The price and inventory of MXLDA3KP18CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP18CAE3 is usually 5 days.
3.What payment methods are accepted for MXLDA3KP18CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP18CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP18CAE3?
MXLDA3KP18CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP18CAE3 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 MXLDA3KP18CAE3?
For technical support, including MXLDA3KP18CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP18CAE3 requirements.
6.How does Aetrix verify that MXLDA3KP18CAE3 is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP18CAE3 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 MXLDA3KP18CAE3 meets industry standards.
7.What is the process for return or replacement of MXLDA3KP18CAE3?
All MXLDA3KP18CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP18CAE3, 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 MXLDA3KP18CAE3 part is unused and in its original packaging.
Return procedure for MXLDA3KP18CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP18CAE3 Tags
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