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Microchip Technology MXDA3KP24A
- Part No.:
- MXDA3KP24A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXDA3KP24A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,506
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Product details
Overview
MXDA3KP24A 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 24 V standoff voltage (VWM), 26.7–29.5 V breakdown range (V(BR)), 38.9 V clamping voltage at 77.2 A peak pulse current, and operates from –55 °C to +150 °C.
For engineers reviewing the MXDA3KP24A datasheet, MXDA3KP24A pinout, MXDA3KP24A application, or MXDA3KP24A equivalent, key selection criteria include IEC61000-4-5 Class 1–4 compliance with 42 Ω source impedance, 10/1000 µs surge rating, RoHS-compliant e3 matte-tin plating, and UL94V-0 void-free epoxy packaging.
Technical Context
The MXDA3KP24A implements a silicon avalanche diode structure optimized for sub-100 ps response time in unidirectional configuration, enabling suppression of fast transients including ESD (IEC61000-4-2), EFT (IEC61000-4-4), and induced RF events. Its 3000 W peak pulse power rating is validated at 10/1000 µs waveform with ≤0.05% duty factor.
It supports secondary lightning protection per IEC61000-4-5 across multiple source impedances: Class 1–4 at 42 Ω, Class 1–3 at 12 Ω, and Class 2 at 2 Ω. Standby current is limited to ≤2 µA at 24 V, and clamping performance is specified up to 77.2 A IPP with 38.9 V VC max.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous operating voltage before conduction begins; sets minimum system overvoltage threshold. |
| V(BR) min/max | 26.7–29.5 V - Breakdown occurs within this range at 1 mA; defines turn-on consistency across temperature and lot. |
| VC @ IPP | 38.9 V at 77.2 A - Clamped voltage during worst-case 10/1000 µs surge; determines protected circuit's maximum stress level. |
| PPP | 3000 W - Peak pulse power handling at 10/1000 µs; enables robust protection against lightning-induced surges. |
| ID @ VWM | ≤2 µA - Low leakage ensures minimal standby power loss and avoids false triggering in high-impedance circuits. |
| TJ/TSTG | –55 to +150 °C - Wide junction/storage temperature range supports deployment in harsh industrial and aerospace environments. |
Pinout & Package
MXDA3KP24A uses a 3-pin SMD package with cathode-defined polarity: Pin 1 and Pin 3 are cathodes; Pin 2 is the common anode. The void-free thermosetting epoxy case meets UL94V-0, and terminals feature annealed matte-tin (e3) plating per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of Channel 1 | Connected to protected line 1; conducts surge current to common anode when V > V(BR). |
| Pin 2 | Common Anode | Reference node for both TVS channels; must be tied to system ground or low-impedance return path. |
| Pin 3 | Cathode of Channel 2 | Connected to protected line 2; provides dual-line protection with shared anode architecture. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional construction | Enables DC-biased line protection without reverse conduction; suitable for positive-rail applications only. |
| 3000 W 10/1000 µs rating | Validated surge capacity allows single-device protection of 24 V industrial buses against IEC61000-4-5 Level 4 events. |
| RoHS-compliant e3 plating | Matte-tin termination ensures reliable solderability and eliminates lead-based process constraints in modern assembly lines. |
| UL94V-0 epoxy body | Self-extinguishing encapsulation meets fire-safety requirements for enclosed industrial enclosures and rail systems. |
Applications
| Industrial PLC I/O Protection | Telecom Power Feeds |
|---|---|
Use Scenario: Protecting 24 V digital input modules in programmable logic controllers from field-wiring transients and induced surges. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and chassis ground, triggered by overvoltage exceeding 24 V. Use Value: Limits voltage seen by downstream optocoupler or Schmitt trigger to ≤38.9 V during 77.2 A surges, preventing latch-up or permanent damage. | Use Scenario: Safeguarding -48 V telecom power distribution boards against lightning-induced common-mode surges on feed lines. IC Role / Device Role / Timing Role: Unidirectional TVS array connected between each feed line and system ground, conducting only during positive overvoltage events. Use Value: Maintains ≤2 µA leakage at nominal -48 V bias while clamping positive transients to 38.9 V, preserving power integrity and rectifier reliability. |
| Railway Signaling Interfaces | Renewable Energy Monitoring |
Use Scenario: Shielding 24 V sensor interface lines in train-mounted signaling equipment exposed to electromagnetic interference from traction motors. IC Role / Device Role / Timing Role: Dual-channel TVS with shared anode, protecting two independent sensor inputs simultaneously against coupled RF and switching noise. Use Value: Sub-100 ps response time ensures suppression of fast-edge transients before they propagate into ADC front-ends or microcontroller GPIOs. | Use Scenario: Securing RS-485 communication lines in solar inverter monitoring units installed in outdoor substations. IC Role / Device Role / Timing Role: Line-to-ground TVS placed at physical connector entry point, shunting surge energy before it reaches isolated transceiver ICs. Use Value: 3000 W rating withstands repeated 10/1000 µs surges per IEC61000-4-5 Class 3 (12 Ω source), extending field lifetime beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | 600 W PPP rating, SMA package, 38.9 V VC at 17.3 A IPP - lower surge capacity and smaller thermal mass. | Best suited for low-energy board-level ESD protection, not secondary lightning with 42 Ω source. | Select SMAJ24A only for space-constrained designs where 3000 W capability is unnecessary. |
| SMCJ24A | 1500 W PPP rating, SMC package, 38.9 V VC at 38.9 A IPP - half the power handling of MXDA3KP24A. | Appropriate for mid-tier industrial I/O where Class 2–3 IEC61000-4-5 compliance suffices. | Choose SMCJ24A when cost sensitivity outweighs need for full Class 4 lightning margin. |
Compared with SMAJ24A and SMCJ24A, MXDA3KP24A delivers double the surge energy absorption of SMCJ24A and five times that of SMAJ24A - critical for railway, utility metering, and outdoor telecom deployments requiring MIL-PRF-19500 screening readiness.
Availability
MXDA3KP24A is available at Aetrix Electronics and suitable for industrial PLC I/O protection, telecom power feeds, railway signaling interfaces, and renewable energy monitoring requiring stable component supply and long-term lifecycle assurance.
Supply support for MXDA3KP24A 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, radiation-hardened devices, and discrete protection components.
The MDA3KP series was engineered for mission-critical surge immunity in defense, aerospace, and industrial infrastructure - emphasizing MIL-PRF-19500 screening readiness, lot traceability, and verified 3000 W 10/1000 µs performance.
FAQ
What is the clamping voltage of MXDA3KP24A under maximum rated surge current?
The MXDA3KP24A exhibits a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current (IPP) of 77.2 A under 10/1000 µs waveform conditions. This value is measured at the device terminals and represents the upper limit of voltage imposed on protected circuitry during worst-case transient events, ensuring downstream components remain within safe operating limits.
Is MXDA3KP24A suitable for bidirectional signal line protection?
No, MXDA3KP24A is a unidirectional TVS array and conducts only for positive overvoltage relative to its common anode. For bidirectional protection - such as AC-coupled data lines or floating differential pairs - the bidirectional variant MXDA3KP24CA must be used instead, as explicitly indicated by the "C" suffix in Microsemi's part nomenclature.
Does MXDA3KP24A meet IEC61000-4-5 Class 4 requirements?
Yes, MXDA3KP24A is certified for IEC61000-4-5 Class 4 secondary lightning protection when tested with a 42 Ω source impedance. Its 3000 W peak pulse power rating and 77.2 A IPP capability satisfy the 4 kV open-circuit voltage requirement for Class 4, making it appropriate for outdoor-facing industrial ports and utility-grade equipment interfaces.
What is the standoff voltage rating and how does it relate to system design?
The MXDA3KP24A has a rated working standoff voltage (VWM) of 24 V, meaning it remains non-conductive up to this DC or peak AC voltage across its terminals. System designers must ensure the normal operating voltage - including ripple, tolerance, and transients - stays below 24 V to prevent premature conduction; exceeding VWM risks increased leakage or thermal runaway under sustained overvoltage.
Can MXDA3KP24A be used in high-humidity or outdoor environments?
Yes, MXDA3KP24A carries IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1 classification, requiring no dry pack storage or bake-out prior to reflow. Its void-free UL94V-0 epoxy body provides intrinsic resistance to moisture ingress and environmental contaminants, supporting reliable operation in outdoor enclosures, railcars, and coastal telecom cabinets when properly mounted and sealed.
MXDA3KP24A 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 77.2A
- 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:
- -
MXDA3KP24A FAQ
1.How can I place an order for MXDA3KP24A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXDA3KP24A 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 MXDA3KP24A reliable?
The price and inventory of MXDA3KP24A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXDA3KP24A is usually 5 days.
3.What payment methods are accepted for MXDA3KP24A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXDA3KP24A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXDA3KP24A?
MXDA3KP24A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXDA3KP24A 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 MXDA3KP24A?
For technical support, including MXDA3KP24A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXDA3KP24A requirements.
6.How does Aetrix verify that MXDA3KP24A is sourced from the original manufacturer or authorized distributors?
All MXDA3KP24A 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 MXDA3KP24A meets industry standards.
7.What is the process for return or replacement of MXDA3KP24A?
All MXDA3KP24A units undergo pre-shipment inspection (PSI). If there is an issue with MXDA3KP24A, 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 MXDA3KP24A part is unused and in its original packaging.
Return procedure for MXDA3KP24A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXDA3KP24A Tags
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