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Microchip Technology MXLDA3KP20A
- Part No.:
- MXLDA3KP20A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP20A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:9,803
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Product details
Overview
MXLDA3KP20A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 20 V standoff voltage (VWM), 22.2–24.5 V breakdown voltage (V(BR)), and 32.4 V maximum clamping voltage (VC) at 92.6 A peak pulse current (IPP). It provides secondary lightning protection per IEC61000-4-5 (42 Ω, Class 1–4), ESD/EFT suppression per IEC61000-4-2/4-4, and inductive switching transient protection in power supply input stages.
For engineers reviewing the MXLDA3KP20A datasheet, MXLDA3KP20A pinout, MXLDA3KP20A application, or MXLDA3KP20A equivalent, key selection criteria include its 20 V working voltage rating, sub-100 ps response time, 150 °C junction temperature capability, RoHS-compliant e3 marking, and compatibility with high-reliability MIL-PRF-19500 upscreening options.
Technical Context
The MXLDA3KP20A operates as a unidirectional avalanche diode-based TVS array designed for parallel connection across DC power rails or signal lines to shunt surge energy to ground. Its clamping behavior is defined by a sharp reverse breakdown at ≥22.2 V and limits transient voltages to ≤32.4 V under 10/1000 µs 92.6 A pulses.
It features thermally robust epoxy packaging rated for -55 °C to +150 °C operation, moisture sensitivity Level 1 (no dry pack required), and tin-lead or matte-tin terminations compliant with MIL-STD-750 Method 2026. Polarity is defined by odd-numbered pins as cathodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) min/max | 22.2–24.5 V @ 1 mA - Ensures reliable turn-on before downstream circuit damage thresholds |
| VC @ IPP | 32.4 V @ 92.6 A - Limits transient overvoltage seen by protected ICs during 10/1000 µs surges |
| PPP | 3000 W @ 10/1000 µs - Sustains high-energy transients common in industrial power inputs and telecom interfaces |
| ID @ VWM | ≤2 µA - Negligible leakage current preserves efficiency in battery-backed or low-power systems |
| TJ/TSTG | -55 to +150 °C - Supports deployment in automotive engine compartments and industrial outdoor enclosures |
| Response time | <100 ps - Clamps ESD events faster than silicon-controlled rectifiers or varistors |
Pinout & Package
MXLDA3KP20A uses a 3-pin surface-mount DO-214AB (SMC) package with void-free UL94V-0 epoxy body, matte-tin or tin-lead terminations, and polarity marked by a dot indicating Pin 1. Odd-numbered pins are cathodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of Channel 1 | Connected to protected line (e.g., VIN); anode tied to ground for unidirectional clamping |
| Pin 2 | Anode Common | Shared ground reference for both TVS channels; must be low-inductance path to system GND |
| Pin 3 | Cathode of Channel 2 | Connected to second protected line (e.g., return path or auxiliary rail) |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Handles high-energy lightning-induced surges in telecom base stations and industrial PLC I/O modules |
| Unidirectional construction | Prevents reverse-bias leakage in DC-coupled power rails while enabling precise clamping threshold control |
| MIL-PRF-19500 upscreening option | Enables use in aerospace, defense, and medical systems requiring lot traceability and 3σ ID screening |
| Moisture sensitivity Level 1 | Eliminates bake-out requirement prior to reflow, reducing manufacturing cost and PCB warpage risk |
| RoHS-compliant e3 marking | Meets global environmental compliance mandates without performance trade-offs in clamping or power handling |
Applications
| Industrial Power Input Protection | Telecom Line Interface |
|---|---|
Use Scenario: 24 V DC power entry point on programmable logic controller (PLC) backplane exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontroller power rails. Use Value: Limits transients to ≤32.4 V, preventing latch-up or gate oxide rupture in 3.3 V/5 V logic supplies. | Use Scenario: T1/E1 data line interface in network access equipment subjected to induced RF and lightning coupling. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; MXLDA3KP20A used on DC bias feed lines with defined polarity. Use Value: Suppresses 10/1000 µs surges up to 3000 W while maintaining <2 µA leakage at 20 V nominal line voltage. |
| Automotive Body Control Module | Medical Diagnostic Equipment |
Use Scenario: 12 V battery-supplied subsystem (e.g., door module) experiencing ISO 7637-2 pulse 1 and pulse 3a/b transients. IC Role / Device Role / Timing Role: Unidirectional TVS on switched 12 V rail feeding CAN transceivers and sensor interfaces. Use Value: Clamps negative-going transients to ground with <100 ps response, preserving signal integrity on 500 kbps CAN buses. | Use Scenario: Low-noise analog front-end power supply in ultrasound imaging system exposed to ESD during probe handling. IC Role / Device Role / Timing Role: Final-stage protection on ±15 V op-amp supply rails prior to precision ADC drivers. Use Value: Delivers <2 µA standby current to avoid offset drift, while clamping ESD events to ≤32.4 V without latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | 600 W PPP rating, same VWM and VC, DO-214AA package | Lower surge capacity; suitable only for IEC61000-4-2 ESD, not IEC61000-4-5 lightning | Select SMBJ20A when system-level surge testing does not exceed 1 kV 10/1000 µs |
| 1.5KE20A | 1500 W PPP, axial-leaded DO-15 package, higher thermal resistance | Not surface-mount; requires through-hole assembly and larger board area | Choose 1.5KE20A only if legacy through-hole design prohibits SMT revision |
Compared with SMBJ20A and 1.5KE20A, MXLDA3KP20A delivers double the surge power handling of SMBJ20A and enables automated SMT placement versus the leaded 1.5KE20A, making it optimal for high-reliability industrial and telecom power rail protection where 3000 W surge immunity is mandated.
Availability
MXLDA3KP20A is available at Aetrix Electronics and suitable for industrial power input protection, telecom line interface hardening, automotive body control modules, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.
Supply support for MXLDA3KP20A 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 high-power, surface-mount TVS protection for mission-critical DC power systems where MIL-PRF-19500 screening, wide temperature operation, and repeatable clamping performance are essential.
FAQ
What is the maximum clamping voltage of MXLDA3KP20A under standard test conditions?
The MXLDA3KP20A has a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current (IPP) of 92.6 A using the 10/1000 µs waveform. This value is measured across the device terminals and defines the upper voltage limit imposed on protected circuits during surge events, ensuring downstream components remain within safe operating voltage margins.
Is MXLDA3KP20A suitable for bidirectional signal line protection?
No, MXLDA3KP20A is a unidirectional TVS device, as indicated by the absence of the "C" suffix in its nomenclature. It is intended for DC power rail protection where polarity is fixed. For bidirectional AC or data line protection, Microsemi's MDA3KP20CA or equivalent dual-channel symmetric TVS devices must be selected instead of MXLDA3KP20A.
Does MXLDA3KP20A require baking before reflow soldering?
No, MXLDA3KP20A has IPC/JEDEC J-STD-020B moisture sensitivity Level 1 rating, meaning it may be stored indefinitely at ambient conditions and placed directly into reflow without pre-bake. This eliminates process steps, reduces thermal stress on PCBs, and supports high-yield automated assembly-key advantages confirmed in the RF01243 datasheet for MXLDA3KP20A.
What is the standoff voltage rating of MXLDA3KP20A, and how does it relate to system design?
The MXLDA3KP20A has a rated reverse standoff voltage (VWM) of 20 V, meaning it remains non-conductive up to this DC or peak AC voltage across its terminals. System designers must ensure that the normal operating voltage-including ripple and tolerance-does not exceed 20 V to prevent premature conduction; MXLDA3KP20A is therefore ideal for 12 V or 24 V nominal systems with appropriate derating margin.
Can MXLDA3KP20A be used in applications requiring MIL-PRF-19500 screening?
Yes, MXLDA3KP20A supports optional upscreening per MIL-PRF-19500, including wafer lot traceability, 3σ standby current screening, and conformance inspections. This capability is documented in Micronote 129 and makes MXLDA3KP20A suitable for aerospace, defense, and high-integrity medical applications where component pedigree and reliability validation are mandatory-not just for standard commercial-grade MXLDA3KP20A units.
MXLDA3KP20A 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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 92.6A
- 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:
- -
MXLDA3KP20A FAQ
1.How can I place an order for MXLDA3KP20A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP20A 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 MXLDA3KP20A reliable?
The price and inventory of MXLDA3KP20A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP20A is usually 5 days.
3.What payment methods are accepted for MXLDA3KP20A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP20A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP20A?
MXLDA3KP20A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP20A 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 MXLDA3KP20A?
For technical support, including MXLDA3KP20A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP20A requirements.
6.How does Aetrix verify that MXLDA3KP20A is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP20A 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 MXLDA3KP20A meets industry standards.
7.What is the process for return or replacement of MXLDA3KP20A?
All MXLDA3KP20A units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP20A, 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 MXLDA3KP20A part is unused and in its original packaging.
Return procedure for MXLDA3KP20A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP20A Tags
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