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Microchip Technology MXLDA3KP28CA
- Part No.:
- MXLDA3KP28CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP28CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,035
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Product details
Overview
MXLDA3KP28CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array designed for high-reliability surge protection in industrial and aerospace systems. It features a 28 V standoff voltage (VWM), 31.1–34.4 V breakdown range (V(BR)), 45.4 V clamping voltage at 66 A peak pulse current, and operates from −55 °C to +150 °C. It protects against ESD (IEC61000-4-2), EFT (IEC61000-4-4), and secondary lightning surges (IEC61000-4-5).
For engineers reviewing the MXLDA3KP28CA datasheet, MXLDA3KP28CA pinout, MXLDA3KP28CA application, or MXLDA3KP28CA equivalent, this page delivers verified electrical parameters, package dimensions, IEC-compliant surge capability, polarity configuration, and alternative selection guidance for robust overvoltage protection design.
Technical Context
The MXLDA3KP28CA is a surface-mount, void-free epoxy-packaged TVS array with bidirectional polarity (C suffix), enabling symmetrical clamping for AC-coupled or floating signal lines. Its <100 ps response time ensures effective suppression of fast transients including ESD and EFT events.
It is rated for 3000 W peak pulse power at 10/1000 µs waveform, with full surge testing per production lot and traceable wafer/assembly lot records. The device meets MIL-PRF-19500 screening options and is RoHS-compliant (e3 marking).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous operating voltage before clamping begins; sets minimum system voltage margin for reliable standby operation. |
| V(BR) min/max | 31.1–34.4 V @ I(BR) - Confirmed breakdown threshold range; defines onset of avalanche conduction under transient stress. |
| VC @ IPP | 45.4 V @ 66 A - Clamping voltage during 10/1000 µs surge; determines maximum voltage seen by protected downstream circuitry. |
| PPP | 3000 W @ 10/1000 µs - Peak power handling capacity; validates suitability for Class 3/4 IEC61000-4-5 lightning surge with 12 Ω or 42 Ω source impedance. |
| ID @ VWM | 2 µA max - Standby leakage current at rated standoff; ensures minimal power loss and signal integrity in high-impedance interfaces. |
| TJ/TSTG | −55 °C to +150 °C - Junction/storage temperature range; supports deployment in extended-temperature industrial, avionics, and downhole environments. |
Pinout & Package
MXLDA3KP28CA uses a 3-pin SMD package (case outline per RF01243, Page 6) with void-free thermosetting epoxy body (UL94V-0), tin-lead or matte-tin plating, and polarity defined by dot marking for Pin 1. Odd-numbered pins are cathodes per internal TVS diode configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of Channel 1 | Connected to protected line side; forms bidirectional clamp path with Pin 2 as common anode reference. |
| Pin 2 | Common Anode | Internal tie point for both TVS junctions; requires low-inductance grounding to ensure effective clamping symmetry. |
| Pin 3 | Cathode of Channel 2 | Connected to second protected line; enables dual-line or differential-mode surge suppression with shared ground return. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetrical clamping on AC or floating lines without polarity constraints-critical for RS-485, CAN, or Ethernet PHY protection. |
| 3000 W peak pulse rating | Validated for IEC61000-4-5 Class 3/4 secondary lightning surges with 12 Ω or 42 Ω source impedance-supports compliance in harsh industrial environments. |
| MIL-PRF-19500 screening option | Supports high-reliability qualification including lot traceability, 3σ ID screening, and surge testing-required for aerospace and defense programs. |
| Moisture sensitivity Level 1 | No dry pack or bake-out required prior to reflow-reduces manufacturing overhead and eliminates moisture-induced popcorning risk. |
Applications
| Industrial Motor Drives | Avionics Data Buses |
|---|---|
Use Scenario: Protection of encoder feedback lines and control inputs against switching transients from IGBT gate drivers and contactor bounce. IC Role / Device Role / Timing Role: Bidirectional TVS array clamping differential surges between A/B lines and chassis ground. Use Value: Prevents latch-up or damage to isolated RS-422 receivers while maintaining signal integrity up to 10 Mbps under repeated 3 kV surge stress. | Use Scenario: Shielding ARINC 429 or MIL-STD-1553B data lines from induced RF and lightning-induced transients in aircraft wiring harnesses. IC Role / Device Role / Timing Role: Fast-response (≤100 ps) bidirectional clamping device placed at connector interface with controlled trace impedance. Use Value: Limits transient overshoot to ≤45.4 V during 10/1000 µs surges, preserving receiver input thresholds and avoiding bit errors in deterministic avionics protocols. |
| Telecom Power Feeds | Downhole Oilfield Sensors |
Use Scenario: Safeguarding -48 V DC telecom power distribution boards from load dump and hot-swap transients. IC Role / Device Role / Timing Role: High-power standoff TVS array absorbing >200 A surge currents while holding clamping below 50 V. Use Value: Maintains uninterrupted operation of PoE injectors and line cards during 3000 W surge events without crowbar triggering or thermal runaway. | Use Scenario: Protecting analog sensor front-ends (e.g., piezoresistive pressure transducers) exposed to electrostatic discharge in deep-well drilling equipment. IC Role / Device Role / Timing Role: Low-leakage (2 µA max) bidirectional suppressor mounted directly at sensor connector to minimize parasitic inductance. Use Value: Ensures sub-µV baseline stability and prevents ESD-induced calibration drift in high-precision 24-bit ADC signal chains operating at 150 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CA | 600 W PPP rating, same VWM and bidirectional polarity, DO-214AA package | Limited to Class 2 IEC61000-4-5; insufficient for 3 kV/42 Ω Class 4 lightning test | Select when board space is constrained and surge energy is limited to ≤600 W. |
| SMCJ28CA | 1500 W PPP rating, same VWM and polarity, DO-214AB package | Meets Class 3 lightning but fails Class 4 42 Ω test; lower thermal mass than MXLDA3KP28CA | Choose where cost is prioritized over full Class 4 compliance and long-term reliability screening. |
Compared with SMBJ28CA and SMCJ28CA, MXLDA3KP28CA delivers double the peak pulse power and full MIL-PRF-19500 screening support-making it the only option qualified for mission-critical Class 4 lightning protection and high-reliability aerospace deployments.
Availability
MXLDA3KP28CA is available at Aetrix Electronics and suitable for industrial motor drives, avionics data buses, and downhole oilfield sensors requiring stable component supply, long-lifecycle availability, and certified surge performance.
Supply support for MXLDA3KP28CA 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 ICs, RF solutions, and radiation-hardened components.
The MDA3KP series was engineered specifically for high-energy transient suppression in safety-critical infrastructure, meeting stringent IEC61000-4-5, MIL-STD-461, and aerospace environmental requirements.
FAQ
What is the clamping voltage of MXLDA3KP28CA at its rated peak pulse current?
The MXLDA3KP28CA has a maximum clamping voltage (VC) of 45.4 V at 66 A peak pulse current (IPP) under 10/1000 µs waveform conditions. This value is measured across the device terminals during standardized surge testing and defines the upper voltage limit imposed on protected circuitry during worst-case transients. The MXLDA3KP28CA maintains this clamping performance consistently across its operating temperature range.
Is MXLDA3KP28CA suitable for IEC61000-4-5 Class 4 secondary lightning protection?
Yes, MXLDA3KP28CA is validated for IEC61000-4-5 Class 4 secondary lightning protection when tested with 42 Ω source impedance. Its 3000 W peak pulse power rating and 45.4 V clamping voltage ensure compliance with the 3 kV open-circuit voltage requirement. The MXLDA3KP28CA's bidirectional architecture and low clamping ratio make it appropriate for protecting balanced interfaces like RS-485 or MIL-STD-1553B in such applications.
Does MXLDA3KP28CA require moisture-sensitive handling or baking before reflow soldering?
No, MXLDA3KP28CA is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it does not require dry packing or pre-reflow baking. This eliminates moisture-related defects such as popcorning during assembly and simplifies manufacturing logistics. The MXLDA3KP28CA's thermosetting epoxy body contributes to its robust moisture resistance and long shelf-life stability.
How is polarity identified on the MXLDA3KP28CA package?
Polarity is marked on the MXLDA3KP28CA package with a dot indicating Pin 1, and odd-numbered pins (Pin 1 and Pin 3) serve as cathodes per the internal bidirectional TVS structure. Pin 2 is the common anode terminal. This configuration allows symmetrical clamping between any two protected lines referenced to a shared ground plane. Correct orientation is essential to ensure proper surge current diversion in the MXLDA3KP28CA.
What screening options are available for MXLDA3KP28CA under MIL-PRF-19500?
MXLDA3KP28CA supports optional upscreening per MIL-PRF-19500, including wafer and assembly lot traceability, 3σ statistical screening on standby current (ID), and full lot surge testing. These options are documented in Micronote 129 and enable qualification for high-reliability programs in defense, space, and nuclear instrumentation. The base MXLDA3KP28CA meets commercial-grade specifications, while screened units carry additional conformance markings.
MXLDA3KP28CA 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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 66A
- 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:
- -
MXLDA3KP28CA FAQ
1.How can I place an order for MXLDA3KP28CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP28CA 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 MXLDA3KP28CA reliable?
The price and inventory of MXLDA3KP28CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP28CA is usually 5 days.
3.What payment methods are accepted for MXLDA3KP28CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP28CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP28CA?
MXLDA3KP28CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP28CA 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 MXLDA3KP28CA?
For technical support, including MXLDA3KP28CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP28CA requirements.
6.How does Aetrix verify that MXLDA3KP28CA is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP28CA 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 MXLDA3KP28CA meets industry standards.
7.What is the process for return or replacement of MXLDA3KP28CA?
All MXLDA3KP28CA units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP28CA, 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 MXLDA3KP28CA part is unused and in its original packaging.
Return procedure for MXLDA3KP28CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP28CA Tags
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