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Microchip Technology MXDA3KP12A
- Part No.:
- MXDA3KP12A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXDA3KP12A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:8,523
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Product details
Overview
MXDA3KP12A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array designed for high-reliability overvoltage protection in power rails and signal lines. It features a 12 V reverse standoff voltage (VWM), 13.3–14.7 V breakdown voltage (V(BR)), 19.9 V maximum clamping voltage at 150.6 A peak pulse current, and operates from −55 °C to +150 °C - used in industrial motor drives, telecom power supplies, and railway signaling interfaces.
For engineers reviewing the MXDA3KP12A datasheet, MXDA3KP12A pinout, MXDA3KP12A application, or MXDA3KP12A equivalent, key selection criteria include clamping performance under 10/1000 µs surge, standoff voltage margin relative to DC rail, thermal derating above 25 °C, and compliance with IEC61000-4-5 Class 1–4 secondary lightning testing at 2–42 Ω source impedance.
Technical Context
The MXDA3KP12A is a single-channel unidirectional TVS diode optimized for fast clamping of high-energy transients. Its sub-100 ps response time enables effective suppression of ESD (IEC61000-4-2), EFT (IEC61000-4-4), and induced switching surges. It delivers 3000 W peak pulse power at 10/1000 µs waveform with <5 µA standby current at 12 V.
Designed for vertical mounting on PCBs, it uses a void-free thermosetting epoxy package rated UL94V-0. Polarity is defined by dot marking: Pin 1 is cathode. The device undergoes full lot surge testing and supports MIL-PRF-19500 upscreening for aerospace and defense applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) min/max | 13.3–14.7 V @ 1 mA - ensures reliable turn-on before downstream IC damage thresholds |
| VC @ IPP | 19.9 V @ 150.6 A - limits voltage seen by protected circuit during worst-case 10/1000 µs surge |
| PPP | 3000 W @ 10/1000 µs - sustains high-energy lightning-induced transients per IEC61000-4-5 |
| ID @ VWM | ≤5 µA - negligible leakage at operating voltage, critical for low-power sensor rails |
| TJ/TSTG | −55 °C to +150 °C - supports operation in under-hood automotive, industrial enclosures, and rail systems |
Pinout & Package
MXDA3KP12A uses a 2-pin SMD vertical package (case outline per RF01243, Page 6). Body is void-free thermosetting epoxy (UL94V-0), with tin-lead or matte-tin plating. Pin 1 (cathode) is marked by a dot on top of the package; polarity follows standard TVS convention (anode to ground, cathode to line).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line (e.g., 12 V rail); conducts when transient exceeds V(BR) |
| Pin 2 | Anode | Connected to system ground; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Enables robust secondary lightning protection per IEC61000-4-5 up to Class 4 (42 Ω source) |
| 19.9 V clamping at 150.6 A | Keeps protected 12 V logic or power circuits below 20 V during surge, preventing latch-up or burnout |
| Sub-100 ps response time | Clamps ESD events (IEC61000-4-2 ±8 kV contact) before sensitive interface ICs are damaged |
| MIL-PRF-19500 upscreening option | Supports high-reliability qualification for aerospace, military, and rail safety-critical subsystems |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to reflow, reducing manufacturing cost and risk |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensing lines against IGBT switching transients and bus coupling noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between isolated 12 V bias rail and ground to clamp positive-going spikes. Use Value: Limits transient overshoot to ≤19.9 V, preserving optocoupler CTR and PWM controller stability. | Use Scenario: Input-stage surge protection on 48 V DC-DC converter front-end subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on main input rail, coordinated with upstream MOV and filter inductors. Use Value: Absorbs 3000 W energy per IEC61000-4-5 Ed.3 42 Ω test, preventing fuse blow and MOSFET avalanche failure. |
| Railway Signaling Interfaces | Automotive Body Control Modules |
Use Scenario: Protection of RS-485 transceivers in track-side signaling cabinets exposed to traction return currents and lightning coupling. IC Role / Device Role / Timing Role: Line-side TVS on differential pair, with cathode tied to signal line and anode to chassis ground. Use Value: Clamps common-mode surges to <20 V while maintaining >12 kV ESD immunity per IEC61000-4-2. | Use Scenario: 12 V battery rail protection in BCM modules subject to load dump and jump-start transients. IC Role / Device Role / Timing Role: Secondary clamping device downstream of primary TVS or polyfuse, targeting fast-rising spikes. Use Value: Responds in <100 ps to suppress 100 V/µs edges, limiting microcontroller reset events and CAN transceiver faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | 600 W PPP rating, 13.3 V V(BR), 19.9 V VC @ 30.2 A - lower surge capacity | Not suitable for IEC61000-4-5 Class 3/4; limited to ESD/EFT and low-energy switching | Select SMBJ12A only where board space is constrained and surge threat level is ≤Class 2 (42 Ω) |
| SMCJ12A | 1500 W PPP rating, 13.3 V V(BR), 19.9 V VC @ 75.3 A - half the energy handling of MXDA3KP12A | Valid for Class 1–2 IEC61000-4-5; insufficient for sustained 3000 W pulses in rail or telecom | Choose SMCJ12A when cost is prioritized over MIL-grade reliability and full Class 4 compliance |
Compared with SMBJ12A and SMCJ12A, MXDA3KP12A delivers double the surge energy capacity of SMCJ12A and five times that of SMBJ12A - enabling use in high-threat environments like railway signaling and industrial UPS systems where 3000 W clamping is mandated.
Availability
MXDA3KP12A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and railway signaling interfaces requiring stable component supply across extended product lifecycles.
Supply support for MXDA3KP12A 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 overvoltage protection in aerospace, defense, and transportation systems - emphasizing surge robustness, temperature resilience, and traceable manufacturing per MIL-PRF-19500.
FAQ
What is the clamping voltage of MXDA3KP12A at its rated peak pulse current?
The MXDA3KP12A has a maximum clamping voltage (VC) of 19.9 V at its rated peak pulse current (IPP) of 150.6 A under 10/1000 µs waveform conditions. This value is guaranteed across temperature and represents the upper limit of voltage imposed on the protected circuit during worst-case surge events - critical for ensuring downstream 12 V logic remains within safe operating margins. MXDA3KP12A achieves this with sub-100 ps response time and low dynamic impedance.
Is MXDA3KP12A RoHS compliant?
Yes, MXDA3KP12A is RoHS compliant, indicated by the "e3" suffix in its full manufacturer marking per RF01243 Rev B. The device uses annealed matte-tin plating on terminals and void-free thermosetting epoxy packaging meeting UL94V-0. No lead or other restricted substances exceed EU RoHS Directive limits. MXDA3KP12A is suitable for environmentally regulated industrial and telecom equipment.
Can MXDA3KP12A be used for bidirectional protection?
No, MXDA3KP12A is unidirectional only. Its part number lacks the "C" suffix required for bidirectional variants (e.g., MXDA3KP12CA). The device conducts only for positive transients on the cathode (Pin 1) relative to anode (Pin 2). For AC or dual-polarity signal lines, a separate bidirectional variant or back-to-back configuration is required. MXDA3KP12A must be oriented with cathode toward the protected line.
What is the maximum operating temperature range for MXDA3KP12A?
MXDA3KP12A is rated for junction and storage temperatures from −55 °C to +150 °C. This wide range supports deployment in under-hood automotive ECUs, railway control cabinets, and industrial inverters where ambient temperatures exceed 105 °C. Derating of peak pulse power begins above 25 °C per Figure 3 in RF01243 - at 125 °C, MXDA3KP12A retains ~65% of its 3000 W rating.
Does MXDA3KP12A require moisture preconditioning before reflow soldering?
No, MXDA3KP12A has IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it may be stored indefinitely at ≤30 °C/60% RH without dry packing or baking. The void-free epoxy body and plating process eliminate moisture ingress risk. MXDA3KP12A can proceed directly to standard Pb-free reflow profiles (peak 260 °C for 10 s), simplifying manufacturing and reducing yield loss.
MXDA3KP12A 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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 150.6A
- 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:
- -
MXDA3KP12A FAQ
1.How can I place an order for MXDA3KP12A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXDA3KP12A 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 MXDA3KP12A reliable?
The price and inventory of MXDA3KP12A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXDA3KP12A is usually 5 days.
3.What payment methods are accepted for MXDA3KP12A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXDA3KP12A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXDA3KP12A?
MXDA3KP12A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXDA3KP12A 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 MXDA3KP12A?
For technical support, including MXDA3KP12A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXDA3KP12A requirements.
6.How does Aetrix verify that MXDA3KP12A is sourced from the original manufacturer or authorized distributors?
All MXDA3KP12A 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 MXDA3KP12A meets industry standards.
7.What is the process for return or replacement of MXDA3KP12A?
All MXDA3KP12A units undergo pre-shipment inspection (PSI). If there is an issue with MXDA3KP12A, 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 MXDA3KP12A part is unused and in its original packaging.
Return procedure for MXDA3KP12A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXDA3KP12A Tags
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