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Microchip Technology MXLDA3KP14A
- Part No.:
- MXLDA3KP14A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP14A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:7,972
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Product details
Overview
MXLDA3KP14A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 14 V standoff voltage (VWM), 15.6–17.2 V breakdown range (V(BR)), and 23.2 V maximum clamping voltage (VC) at 129.4 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 industrial power interfaces.
For engineers reviewing the MXLDA3KP14A datasheet, MXLDA3KP14A pinout, MXLDA3KP14A application, or MXLDA3KP14A equivalent, key selection criteria include its 14 V working voltage rating, sub-100 ps response time, RoHS-compliant void-free epoxy package, and verified 3000 W surge capability under 10/1000 µs waveform - critical for telecom DC power rails, PoE injectors, and motor drive control inputs.
Technical Context
The MXLDA3KP14A operates as a unidirectional avalanche diode-based TVS array, designed to clamp transients before downstream ICs exceed absolute maximum ratings. Its 15.6–17.2 V V(BR) ensures reliable triggering above 14 V nominal operation while maintaining low leakage (<2 µA at VWM).
It delivers 23.2 V clamping at 129.4 A IPP under standardized 10/1000 µs surge, with thermal derating defined per Figure 3 and junction temperature range of –55 °C to +150 °C. Polarity is defined by dot-marked Pin 1 (cathode), consistent with odd-pin cathode assignment across the MDA3KP family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage; must be ≥ system DC rail voltage to avoid standby conduction |
| V(BR) min/max | 15.6–17.2 V @ 1 mA - guaranteed avalanche onset window ensuring predictable turn-on margin over VWM |
| VC @ IPP | 23.2 V @ 129.4 A - clamped voltage during worst-case 10/1000 µs surge; defines protected circuit's maximum stress level |
| ID @ VWM | ≤2 µA - ultra-low leakage preserves efficiency in battery-backed or high-impedance sensing nodes |
| PPP | 3000 W @ 10/1000 µs - peak power handling capacity validated per Figure 1; enables single-device protection for Class 4 lightning events |
| TJ/TSTG | –55 °C to +150 °C - extended thermal range supports under-hood automotive, industrial PLC, and outdoor telecom deployments |
Pinout & Package
MXLDA3KP14A uses a 3-pin SMD package (case outline per Page 6 of RF01243 Rev B): void-free UL94V-0 epoxy body, tin-lead or matte-tin plating, 5 g mass, polarity marked by dot indicating Pin 1 (cathode). Odd-numbered pins are cathodes per family design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; clamps positive transients to ground when anode (Pin 2) is grounded |
| Pin 2 | Anode | Typically tied to system ground; completes conduction path during overvoltage events |
| Pin 3 | Cathode | Second TVS element cathode; enables dual-line protection in compact footprint (e.g., differential bus) |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Validated clamping performance under IEC61000-4-5 42 Ω Class 4 surges without degradation |
| Sub-100 ps response time | Enables effective suppression of fast ESD events (IEC61000-4-2 ±8 kV contact) before IC latch-up occurs |
| RoHS-compliant e3 marking | Meets global environmental compliance without sacrificing surge robustness or thermal stability |
| MIL-PRF-19500 upscreening option | Available with lot traceability, 3σ ID screening, and conformance inspection for aerospace/high-reliability programs |
Applications
| Industrial Motor Drives | Telecom DC Power Feeds |
|---|---|
Use Scenario: Protection of gate driver ICs and current sense amplifiers against inductive kickback from IGBTs/MOSFETs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp negative-going transients on logic-side supplies. Use Value: Limits voltage excursion to ≤23.2 V during 129.4 A surges, preventing damage to 3.3 V/5 V interface ICs with 30 V abs max rating. | Use Scenario: Surge protection on -48 V DC input of telecom line cards and remote radio units. IC Role / Device Role / Timing Role: Cathode-to-rail configuration clamps positive transients to safe levels while blocking normal reverse-biased operation. Use Value: Withstands repeated 3000 W surges per IEC61000-4-5 (42 Ω source), extending field life beyond 10 years in central office environments. |
| PoE Injectors | Automotive Body Control Modules |
Use Scenario: Input-stage protection for IEEE 802.3af/at/bt PSE controllers handling up to 90 W delivery. IC Role / Device Role / Timing Role: Bidirectional-capable layout (via dual-cathode structure) supports common-mode and differential-mode transient suppression on data+power pairs. Use Value: Clamps both polarities within 23.2 V envelope, preserving PHY IC integrity during hot-swap and cable discharge events. | Use Scenario: CAN FD and LIN bus protection in under-hood ECUs exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Mounted at connector entry point to shunt transients before signal conditioning filters and transceivers. Use Value: –55 °C to +150 °C operation ensures reliability across engine bay thermal cycles; 2 µA leakage avoids battery drain in sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A | 600 W PPP rating, SMA package, 23.2 V VC @ 27.5 A IPP - lower surge capacity and smaller thermal mass | Best suited for board-level ESD-only protection; insufficient for IEC61000-4-5 Class 3+ or lightning events | Select MXLDA3KP14A when 3000 W surge immunity and industrial temperature range are required. |
| SMCJ14A | 1500 W PPP rating, SMC package, 23.2 V VC @ 64.5 A IPP - half the power rating and different thermal profile | Appropriate for cost-sensitive consumer electronics; lacks MIL-PRF-19500 screening option and extended TJ range | Choose MXLDA3KP14A for mission-critical infrastructure where long-term surge endurance and traceability matter. |
Compared with SMAJ14A and SMCJ14A, MXLDA3KP14A delivers double the surge energy handling of SMCJ14A and five times that of SMAJ14A - enabling fewer devices per rail, reduced PCB area, and elimination of cascaded protection stages in high-reliability 48 V systems.
Availability
MXLDA3KP14A is available at Aetrix Electronics and suitable for industrial motor drives, telecom DC power feeds, and PoE injectors requiring stable component supply with full traceability and long-lifecycle support.
Supply support for MXLDA3KP14A 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, communications, and industrial markets.
The MDA3KP series was engineered specifically for high-energy transient suppression in harsh-environment power interfaces - emphasizing surge robustness, thermal stability, and qualification-grade manufacturing.
FAQ
What is the maximum clamping voltage of the MXLDA3KP14A under standard surge conditions?
The MXLDA3KP14A has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current (IPP) of 129.4 A under the 10/1000 µs waveform. This value is measured per Figure 2 in the RF01243 datasheet and defines the upper voltage limit imposed on protected circuits during worst-case transients. The MXLDA3KP14A maintains this clamping performance across its full operating temperature range.
Is the MXLDA3KP14A RoHS-compliant and what does the 'e3' marking indicate?
Yes, the MXLDA3KP14A is RoHS-compliant, indicated by the 'e3' suffix in its full marking per Microsemi's nomenclature guide (Page 2 of RF01243). The 'e3' designation confirms lead-free matte-tin terminal plating meeting JEDEC J-STD-020B Level 1 moisture sensitivity - eliminating dry-pack requirements and supporting standard reflow profiles. This compliance applies to the MXLDA3KP14A as shipped and tested.
How does the MXLDA3KP14A differ from bidirectional variants like MDA3KP14CA?
The MXLDA3KP14A is unidirectional, conducting only during positive transients relative to ground, whereas MDA3KP14CA provides symmetrical clamping for both polarities. The MXLDA3KP14A offers lower leakage (<2 µA) and tighter V(BR) tolerance (±5%) versus the bidirectional version, making it optimal for DC power rail protection where reverse conduction must be avoided. Its pinout and package are identical, but circuit integration differs.
Can the MXLDA3KP14A be used for IEC61000-4-5 Class 4 lightning protection?
Yes, the MXLDA3KP14A is explicitly rated for IEC61000-4-5 Class 4 secondary lightning protection with a 42 Ω source impedance, as confirmed in the Applications/Benefits section (Page 1) of RF01243. Its 3000 W peak pulse power and 23.2 V clamping voltage ensure compliance when applied per recommended layout guidelines - including short traces, low-inductance grounding, and proper pad geometry per Page 7.
What is the thermal derating behavior of the MXLDA3KP14A above 25 °C ambient?
The MXLDA3KP14A follows the derating curve in Figure 3 of RF01243: peak pulse power decreases linearly from 100% at 25 °C to ~50% at 125 °C junction temperature. At 100 °C TJ, PPP is ~75% of rated 3000 W. Designers must calculate actual junction temperature using RθJA, power dissipation duty cycle, and PCB copper area to ensure sustained surge capability remains within specification for the MXLDA3KP14A.
MXLDA3KP14A 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 129.4A
- 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:
- -
MXLDA3KP14A FAQ
1.How can I place an order for MXLDA3KP14A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP14A 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 MXLDA3KP14A reliable?
The price and inventory of MXLDA3KP14A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP14A is usually 5 days.
3.What payment methods are accepted for MXLDA3KP14A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP14A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP14A?
MXLDA3KP14A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP14A 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 MXLDA3KP14A?
For technical support, including MXLDA3KP14A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP14A requirements.
6.How does Aetrix verify that MXLDA3KP14A is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP14A 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 MXLDA3KP14A meets industry standards.
7.What is the process for return or replacement of MXLDA3KP14A?
All MXLDA3KP14A units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP14A, 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 MXLDA3KP14A part is unused and in its original packaging.
Return procedure for MXLDA3KP14A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP14A Tags
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