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Microchip Technology MXLDA3KP22A
- Part No.:
- MXLDA3KP22A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP22A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,375
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Product details
Overview
MXLDA3KP22A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array designed for high-reliability secondary lightning and ESD protection in industrial power interfaces. It features a 22 V reverse standoff voltage (VWM), 24.4–26.9 V breakdown voltage (V(BR)), 35.5 V maximum clamping voltage at 84.4 A peak pulse current, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the MXLDA3KP22A datasheet, MXLDA3KP22A pinout, MXLDA3KP22A application, or MXLDA3KP22A equivalent, this device is selected for robust surge immunity in telecom line cards, industrial PLC I/O modules, and DC power rail protection where fast response (<100 ps), low standby leakage (<2 µA), and MIL-PRF-19500 upscreening capability are required.
Technical Context
The MXLDA3KP22A employs silicon avalanche diode technology optimized for sub-100 ps response to transient overvoltages. Its unidirectional polarity enables asymmetric clamping on DC-biased lines, with clamping performance validated at 10/1000 µs waveform per IEC61000-4-5 Class 1–4 testing using 42 Ω, 12 Ω, and 2 Ω source impedances.
It delivers 3000 W peak pulse power dissipation at 25 °C with thermal derating above 25 °C per Figure 3, and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack requirement. Standby current ID is screened to 3σ lot norm at rated VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous DC or peak AC voltage the device blocks without clamping |
| V(BR) min/max | 24.4–26.9 V @ 1 mA - Ensures reliable avalanche initiation before system damage threshold |
| VC @ IPP | 35.5 V @ 84.4 A - Limits downstream voltage stress during worst-case 10/1000 µs surge |
| PPP | 3000 W @ 10/1000 µs - Sustains high-energy transients typical of lightning-induced surges |
| ID @ VWM | <2 µA - Minimizes power loss and signal distortion in always-on protection circuits |
| TJ range | –55 °C to +150 °C - Supports operation in harsh industrial and aerospace environments |
| Response time | <100 ps - Clamps before sensitive ICs experience overstress in ESD events |
Pinout & Package
MXLDA3KP22A uses a 3-pin surface-mount package with void-free UL94V-0 epoxy body, tin-lead or matte-tin plating, and pin 1 identified by a dot on top. Odd-numbered pins are cathodes per device polarity convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of TVS element | Connected to protected line; clamps positive transients to ground when referenced to Pin 2 |
| Pin 2 | Anode/common ground | Reference node for unidirectional clamping; must be low-impedance path to system ground |
| Pin 3 | Cathode of TVS element | Second protected line; shares common anode (Pin 2) for dual-line protection topology |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse rating | Enables single-device protection against IEC61000-4-5 Class 4 surges on 42 Ω source impedance |
| Sub-100 ps response time | Prevents latch-up or gate oxide rupture in downstream MOSFETs and microcontrollers during ESD |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring wafer lot traceability and 3σ ID screening |
| Level 1 moisture sensitivity | Eliminates baking requirements prior to reflow, reducing assembly cost and process risk |
| Unidirectional construction | Optimized for DC-biased applications like PoE injectors and 24 V industrial control inputs |
Applications
| Telecom Line Card Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting T1/E1 interface receivers from induced surges on long copper traces in central office environments. IC Role / Device Role / Timing Role: Primary shunt TVS placed at connector entry point to clamp transients before signal conditioning circuitry. Use Value: Limits clamped voltage to ≤35.5 V during 1 kA 10/1000 µs surge, preserving ±10 V input stage integrity. | Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to motor switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS across input terminals to suppress inductive kickback while maintaining DC bias. Use Value: Withstands repeated 3000 W pulses without degradation, ensuring >10-year field reliability in factory automation. |
| DC Power Rail Protection | PoE Power Sourcing Equipment (PSE) |
Use Scenario: Guarding 24 V or 48 V DC distribution rails in transportation electronics against load dump and alternator spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing energy from inductive transients on main supply bus. Use Value: 3000 W rating handles 12 V/100 ms load dump events per ISO 7637-2 Pulse 5a without failure. | Use Scenario: Protecting IEEE 802.3af/at PSE controller outputs from cable discharge events and fault currents. IC Role / Device Role / Timing Role: Unidirectional clamping device on each power pair to limit voltage excursion during hot-plug or short-circuit faults. Use Value: 22 V VWM aligns with 57 V max PD voltage, enabling safe clamping before PSE shutdown thresholds are exceeded. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | 600 W PPP rating, DO-214AA package, 38.9 V VC @ 17.3 A IPP | Limited to lower-energy transients; unsuitable for IEC61000-4-5 Class 4 | Select SMBJ22A only for cost-sensitive consumer-grade designs with <1 kW surge exposure. |
| SMCJ22A | 1500 W PPP rating, DO-214AB package, 35.5 V VC @ 42.2 A IPP | Half the peak power handling; requires parallel devices for 3000 W compliance | Choose SMCJ22A when board space allows dual placement and thermal management supports stacked dissipation. |
Compared with SMBJ22A and SMCJ22A, MXLDA3KP22A provides full 3000 W single-device surge immunity in a compact 3-pin surface-mount package, eliminating layout complexity and thermal coupling concerns associated with paralleling smaller TVS arrays.
Availability
MXLDA3KP22A is available at Aetrix Electronics and suitable for telecom infrastructure, industrial control systems, and DC power distribution requiring stable component supply with long-term lifecycle assurance.
Supply support for MXLDA3KP22A 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 developed for mission-critical surge protection in aerospace, defense, and industrial systems where MIL-PRF-19500 conformance and guaranteed 3000 W pulse handling are mandatory design requirements.
FAQ
What is the clamping voltage of MXLDA3KP22A at its rated peak pulse current?
The MXLDA3KP22A has a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current (IPP) of 84.4 A under 10/1000 µs waveform conditions. This value is measured per standard test methods defined in the datasheet and ensures predictable voltage limiting during surge events without exceeding downstream component ratings.
Is MXLDA3KP22A RoHS compliant?
Yes, MXLDA3KP22A is RoHS compliant, indicated by the "e3" suffix in its full marking per the part nomenclature guide. The device uses annealed matte-tin plating and void-free UL94V-0 epoxy packaging, meeting lead-free soldering requirements and environmental compliance standards applicable to industrial electronics.
Can MXLDA3KP22A be used for bidirectional transient suppression?
No, MXLDA3KP22A is unidirectional only, as confirmed by its part number suffix "A" and polarity definition in the datasheet. For bidirectional applications such as AC line protection or differential data lines, the equivalent bidirectional variant MXLDA3KP22CA must be selected instead.
What is the standoff voltage rating of MXLDA3KP22A and how does it relate to system operating voltage?
MXLDA3KP22A has a reverse standoff voltage (VWM) of 22 V, meaning it remains non-conductive up to this DC or peak AC voltage. System operating voltage must be ≤22 V to prevent leakage or premature clamping; for example, it is suitable for 24 V nominal DC rails where peak transients remain below 22 V under normal operation.
Does MXLDA3KP22A require special handling or baking before PCB assembly?
No, MXLDA3KP22A has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it may be stored indefinitely at ambient conditions and assembled directly into reflow without pre-baking. This eliminates moisture-related popcorning risk and simplifies manufacturing logistics for high-volume production.
MXLDA3KP22A 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:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 84.4A
- 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:
- -
MXLDA3KP22A FAQ
1.How can I place an order for MXLDA3KP22A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP22A 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 MXLDA3KP22A reliable?
The price and inventory of MXLDA3KP22A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP22A is usually 5 days.
3.What payment methods are accepted for MXLDA3KP22A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP22A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP22A?
MXLDA3KP22A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP22A 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 MXLDA3KP22A?
For technical support, including MXLDA3KP22A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP22A requirements.
6.How does Aetrix verify that MXLDA3KP22A is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP22A 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 MXLDA3KP22A meets industry standards.
7.What is the process for return or replacement of MXLDA3KP22A?
All MXLDA3KP22A units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP22A, 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 MXLDA3KP22A part is unused and in its original packaging.
Return procedure for MXLDA3KP22A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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