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Microchip Technology MXDA3KP20A
- Part No.:
- MXDA3KP20A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXDA3KP20A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,294
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Product details
Overview
MXDA3KP20A 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 20 V reverse standoff voltage (VWM), 22.2–24.5 V breakdown voltage (V(BR)), 32.4 V maximum clamping voltage at 92.6 A peak pulse current, and operates from –55 °C to +150 °C.
For engineers reviewing the MXDA3KP20A datasheet, MXDA3KP20A pinout, MXDA3KP20A application, or MXDA3KP20A equivalent, key selection criteria include IEC61000-4-5 Class 1–4 compliance with 42 Ω/12 Ω/2 Ω source impedances, 100 ps response time, RoHS-compliant e3 matte-tin plating, and MIL-PRF-19500 upscreening eligibility.
Technical Context
The MXDA3KP20A is a single-channel unidirectional TVS diode optimized for fast clamping of high-energy transients in DC power rails and signal lines. Its 10/1000 μs surge rating of 3000 W and sub-100 ps response enable protection against ESD (IEC61000-4-2), EFT (IEC61000-4-4), and secondary lightning surges (IEC61000-4-5).
It uses a void-free thermosetting epoxy package rated UL94V-0, with odd-numbered pins designated as cathodes. Standby current is limited to ≤2 μA at 20 V, and forward surge capability supports 200 A at 8.3 ms half-sine wave per MIL-STD-750 test method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous DC operating voltage before clamping initiates |
| V(BR) min/max | 22.2–24.5 V @ 1 mA - Ensures reliable turn-on margin above system peak voltage |
| VC @ IPP | 32.4 V @ 92.6 A - Clamped voltage during worst-case 10/1000 μs surge, limiting downstream stress |
| PPP | 3000 W @ 10/1000 μs - Sustains high-energy transients without failure |
| ID @ VWM | ≤2 μA - Negligible leakage in standby, critical for low-power monitoring circuits |
| TJ/TSTG | –55 to +150 °C - Supports operation in harsh industrial and aerospace environments |
| Response time | <100 ps - Faster than most microcontroller I/O protection, enabling pre-damage suppression |
Pinout & Package
MXDA3KP20A is housed in a vertical surface-mount plastic package (case outline per RF01243, Page 6) with two terminals: Pin 1 (cathode) and Pin 2 (anode). Polarity is marked by a dot on the top surface indicating Pin 1. The package meets UL94V-0 flammability rating and uses annealed matte-tin (e3) plating for solderability per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; clamps when voltage exceeds V(BR) relative to Pin 2 |
| Pin 2 | Anode | Typically tied to ground or lower-potential rail; completes conduction path during surge |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Enables robust protection against IEC61000-4-5 Class 4 surges (42 Ω source) without derating at 25 °C |
| RoHS-compliant e3 plating | Matte-tin termination ensures lead-free assembly compatibility and long-term solder joint reliability |
| MIL-PRF-19500 screening option | Supports high-reliability programs requiring wafer lot traceability and 3σ ID screening |
| UL94V-0 epoxy body | Self-extinguishing encapsulation prevents flame propagation in safety-critical enclosures |
| Moisture sensitivity Level 1 | No dry pack or baking required prior to reflow, reducing manufacturing overhead |
Applications
| Industrial Motor Drives | Telecom Power Feeds |
|---|---|
Use Scenario: Protection of 24 V DC input stages in variable-frequency drives exposed to inductive switching spikes and nearby lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between DC bus and ground to limit transient overvoltage. Use Value: Limits clamped voltage to 32.4 V during 92.6 A surges, preventing gate oxide damage to upstream MOSFET drivers and control ICs. | Use Scenario: Surge protection on -48 V telecom power distribution boards subject to IEC61000-4-5 Class 3 events (12 Ω source impedance). IC Role / Device Role / Timing Role: Primary overvoltage clamp on feed-line inputs, coordinated with upstream fuses and downstream DC-DC converters. Use Value: Withstands 3000 W pulses while maintaining ≤2 μA leakage, avoiding false trips in always-on monitoring circuits. |
| Railway Signaling Interfaces | Medical Diagnostic Power Supplies |
Use Scenario: Input protection for 20 V auxiliary supplies powering track-side sensors in EN 50121-4 compliant systems. IC Role / Device Role / Timing Role: Fast-response TVS suppressing coupled transients from traction current switching and ESD during maintenance. Use Value: Sub-100 ps response ensures clamping occurs before sensitive analog front-ends experience latch-up or parametric shift. | Use Scenario: Secondary-side protection on isolated 20 V bias rails feeding imaging sensor bias circuitry in MRI and CT equipment. IC Role / Device Role / Timing Role: Low-leakage transient suppressor preserving signal integrity in ultra-low-noise analog paths. Use Value: 2 μA max ID at 20 V avoids loading precision reference dividers, maintaining ±0.1% output regulation under all conditions. |
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, 34.2 V VC @ 17.5 A, DO-214AA package | Limited to Class 2 lightning per IEC61000-4-5 (42 Ω); insufficient for Class 4 duty cycles | Select SMBJ20A only where surge energy is constrained to ≤600 W and PCB space favors smaller footprint. |
| SMCJ20A | 1500 W PPP rating, 32.4 V VC @ 46.3 A, DO-214AB package | Half the energy handling of MXDA3KP20A; requires parallel devices for 3000 W duty | Choose SMCJ20A when cost sensitivity outweighs single-device robustness and thermal derating margins are acceptable. |
Compared with SMBJ20A and SMCJ20A, MXDA3KP20A delivers double the pulse power handling of SMCJ20A and five times that of SMBJ20A within the same functional voltage class-enabling single-device Class 4 lightning compliance without layout redesign or paralleling complexity.
Availability
MXDA3KP20A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, railway signaling interfaces, and medical diagnostic power supplies requiring stable component supply across extended production lifecycles.
Supply support for MXDA3KP20A 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 form, bridging the performance gap between standard TVS diodes and hermetically sealed MIL-spec devices.
FAQ
What is the clamping voltage of MXDA3KP20A at its rated peak pulse current?
The MXDA3KP20A exhibits a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current of 92.6 A under 10/1000 μs waveform conditions. This value is guaranteed per the manufacturer's electrical characteristics table and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MXDA3KP20A maintains this clamping performance across its full operating temperature range of –55 °C to +150 °C.
Is MXDA3KP20A RoHS-compliant and what does the 'e3' marking indicate?
Yes, MXDA3KP20A is RoHS-compliant, as confirmed by the 'e3' suffix in its full part marking per Microsemi's nomenclature guide. The 'e3' designation specifies annealed matte-tin plating on its terminals, ensuring compatibility with lead-free reflow processes and meeting JEDEC J-STD-020B moisture sensitivity Level 1 requirements-no dry pack or baking is needed prior to assembly. This makes MXDA3KP20A suitable for modern environmentally regulated production lines.
Can MXDA3KP20A be used for bidirectional transient suppression?
No, MXDA3KP20A is a unidirectional TVS device, as indicated by the absence of the 'C' suffix in its part number. Bidirectional variants (e.g., MXDA3KP20CA) are separately specified in the datasheet and exhibit symmetrical clamping in both polarities. Using MXDA3KP20A in bidirectional applications risks failure during negative-going transients, since it conducts only when Pin 1 is positive relative to Pin 2. Always verify polarity alignment in schematic capture and layout.
What is the maximum standoff voltage and how does it relate to system design?
The MXDA3KP20A has a rated reverse standoff voltage (VWM) of 20 V, meaning it remains non-conductive up to this DC or peak AC voltage under normal operation. System designers must ensure the maximum continuous operating voltage-including ripple, tolerance, and temperature drift-does not exceed 20 V to prevent premature leakage or thermal runaway. The 22.2–24.5 V breakdown range provides a safe margin above VWM, and the MXDA3KP20A is intended for use where this margin aligns with application-specific overvoltage thresholds.
Does MXDA3KP20A require derating at elevated ambient temperatures?
Yes, MXDA3KP20A requires thermal derating above 25 °C ambient, as shown in Figure 3 of the RF01243 datasheet. At 100 °C case temperature, its peak pulse power rating drops to approximately 50% of the 3000 W nominal value. Designers must calculate expected junction temperature rise using package thermal resistance (not provided in the datasheet but inferable from epoxy-body construction) and apply appropriate layout techniques-such as copper pour area and via stitching-to maintain safe operating limits. The MXDA3KP20A's –55 to +150 °C junction rating supports high-temp environments when properly heatsinked.
MXDA3KP20A 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:
- -
MXDA3KP20A FAQ
1.How can I place an order for MXDA3KP20A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXDA3KP20A 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 MXDA3KP20A reliable?
The price and inventory of MXDA3KP20A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXDA3KP20A is usually 5 days.
3.What payment methods are accepted for MXDA3KP20A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXDA3KP20A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXDA3KP20A?
MXDA3KP20A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXDA3KP20A 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 MXDA3KP20A?
For technical support, including MXDA3KP20A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXDA3KP20A requirements.
6.How does Aetrix verify that MXDA3KP20A is sourced from the original manufacturer or authorized distributors?
All MXDA3KP20A 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 MXDA3KP20A meets industry standards.
7.What is the process for return or replacement of MXDA3KP20A?
All MXDA3KP20A units undergo pre-shipment inspection (PSI). If there is an issue with MXDA3KP20A, 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 MXDA3KP20A part is unused and in its original packaging.
Return procedure for MXDA3KP20A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXDA3KP20A Tags
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