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Microchip Technology MXLDA3KP12A
- Part No.:
- MXLDA3KP12A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP12A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,175
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Product details
Overview
MXLDA3KP12A 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 across –55 °C to +150 °C junction temperature - deployed in industrial motor drives, telecom power supplies, and automotive ECUs.
For engineers reviewing the MXLDA3KP12A datasheet, MXLDA3KP12A pinout, MXLDA3KP12A application, or MXLDA3KP12A 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 MIL-PRF-19500 upscreening eligibility for aerospace-grade reliability assurance.
Technical Context
The MXLDA3KP12A employs an avalanche diode structure optimized for sub-100 ps response time and low dynamic impedance during transient events. Its unidirectional polarity enables asymmetric protection on positive-rail circuits without reverse conduction path concerns.
Rated for 3000 W peak pulse power per IEC61000-4-5 (10/1000 µs waveform), it delivers 19.9 V clamping at 150.6 A IPP while maintaining ≤5 µA standby current at 12 V VWM - enabling robust secondary lightning and EFT suppression in systems with tight voltage margins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous DC or peak AC voltage the device blocks without leakage degradation |
| V(BR) min/max | 13.3–14.7 V @ 1 mA - ensures reliable avalanche initiation before system-level damage occurs |
| VC @ IPP | 19.9 V @ 150.6 A - limits downstream IC stress during worst-case 10/1000 µs surges |
| PPP | 3000 W @ 10/1000 µs - sustains high-energy transients typical of inductive switching and lightning coupling |
| ID @ VWM | ≤5 µA - negligible quiescent loading on 12 V supply rails, critical for low-power monitoring circuits |
| TJ range | –55 °C to +150 °C - supports operation in under-hood automotive and industrial enclosure environments |
Pinout & Package
MXLDA3KP12A uses a 3-pin SMD package with cathode-defined polarity: Pin 1 = Cathode, Pin 2 = Anode, Pin 3 = Cathode (dual-channel configuration). The void-free thermosetting epoxy case meets UL94V-0 and weighs ~5 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Channel 1) | Connected to protected line; clamps positive transients to ground when voltage exceeds V(BR) |
| Pin 2 | Anode (Common) | Shared anode node tied to system ground or negative rail - defines unidirectional conduction path |
| Pin 3 | Cathode (Channel 2) | Second independent clamping channel for dual-rail or differential signal protection |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse rating | Enables single-device protection against IEC61000-4-5 Class 4 surges (42 Ω source) on 12 V systems |
| 19.9 V clamping at 150.6 A | Keeps protected ICs within safe operating area during 10/1000 µs transients |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring lot traceability, burn-in, and parametric screening |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for automated assembly |
| Sub-100 ps response time | Clamps ESD events (IEC61000-4-2) before sensitive logic inputs are exposed |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensing lines against inductive kickback from IGBTs and MOSFETs. IC Role / Device Role / Timing Role: Unidirectional TVS array clamping positive voltage spikes on 12 V control rails. Use Value: Prevents latch-up or permanent damage to isolated gate drivers by limiting transient overshoot to ≤19.9 V. | Use Scenario: Input-stage surge suppression on 48 V DC-DC converter front-ends subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk input rail prior to primary-side controller. Use Value: Absorbs 3000 W pulses without failure, preserving upstream fuse coordination and downstream regulation integrity. |
| Automotive Engine Control Units | Medical Diagnostic Imaging Systems |
Use Scenario: CAN bus power rail protection in under-hood ECUs exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V battery-supplied subsystems with extended thermal operating range. Use Value: Maintains ≤5 µA leakage at 12 V and survives 150 °C ambient - ensuring long-term reliability in sealed enclosures. | Use Scenario: Protection of analog sensor interfaces in MRI and CT scanner subsystems where EMI immunity is critical. IC Role / Device Role / Timing Role: Low-leakage, fast-response clamp on precision 12 V bias rails feeding ADC front-ends. Use Value: Sub-100 ps response prevents EFT-induced data corruption while adding no measurable offset to sensor signals. |
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, 19.9 V VC @ 32.4 A IPP - lower energy handling capacity | Suitable for consumer-grade 12 V ports but not Class 4 IEC61000-4-5 compliance | Select SMBJ12A only when surge threat level is limited to ESD/EFT and board space is constrained. |
| SMCJ12A | 1500 W PPP rating, 19.9 V VC @ 76.9 A IPP - half the energy capability of MXLDA3KP12A | Meets IEC61000-4-5 Class 2 (12 Ω source) but fails Class 3/4 requirements | Choose SMCJ12A for cost-sensitive industrial designs where full 3000 W rating is not mandated. |
Compared with SMBJ12A and SMCJ12A, MXLDA3KP12A provides double the pulse energy capacity of SMCJ12A and five times that of SMBJ12A - making it the only option among the three qualified for secondary lightning protection per IEC61000-4-5 Class 4 with 42 Ω source impedance.
Availability
MXLDA3KP12A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive engine control units, and medical diagnostic imaging systems requiring stable component supply across extended product lifecycles.
Supply support for MXLDA3KP12A 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 discrete protection devices.
The MDA3KP series was engineered for mission-critical overvoltage protection in aerospace, defense, and industrial systems demanding MIL-PRF-19500 compliance and guaranteed surge survivability.
FAQ
What is the clamping voltage of MXLDA3KP12A at its rated peak pulse current?
The MXLDA3KP12A 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 measured per standard test methods defined in IEC61000-4-5 and ensures predictable voltage limiting during high-energy transients. The MXLDA3KP12A maintains this clamping performance across its full operating temperature range.
Is MXLDA3KP12A RoHS compliant?
Yes, MXLDA3KP12A is RoHS compliant, indicated by the "e3" suffix in its full part marking per Microsemi's nomenclature guide. The device uses annealed matte-tin plating on terminals and a UL94V-0 thermosetting epoxy body - both fully compliant with Directive 2011/65/EU and its amendments. MXLDA3KP12A does not contain lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
Does MXLDA3KP12A support MIL-PRF-19500 upscreening?
Yes, MXLDA3KP12A qualifies for optional MIL-PRF-19500 upscreening including wafer lot traceability, 3σ lot norm screening on standby current (ID), and conformance inspections per Micronote 129. This makes MXLDA3KP12A suitable for high-reliability programs in defense and aerospace where process control and long-term parametric stability are mandatory.
What is the thermal derating behavior of MXLDA3KP12A above 25 °C?
MXLDA3KP12A follows a linear derating curve beginning at 25 °C: peak pulse power decreases to 50% at +100 °C and reaches zero at +150 °C junction temperature. Derating is defined in Figure 3 of the RF01243 datasheet and must be applied when calculating surge capability in high-ambient environments such as engine compartments or enclosed power converters.
How many protection channels does MXLDA3KP12A provide?
MXLDA3KP12A integrates two independent unidirectional TVS channels sharing a common anode (Pin 2), configured as a dual-cathode device (Pins 1 and 3). This allows simultaneous protection of two separate 12 V lines - such as dual power domains or differential signal pairs - using a single 3-pin SMD package without external routing complexity.
MXLDA3KP12A 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:
- -
MXLDA3KP12A FAQ
1.How can I place an order for MXLDA3KP12A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP12A 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 MXLDA3KP12A reliable?
The price and inventory of MXLDA3KP12A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP12A is usually 5 days.
3.What payment methods are accepted for MXLDA3KP12A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP12A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP12A?
MXLDA3KP12A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP12A 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 MXLDA3KP12A?
For technical support, including MXLDA3KP12A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP12A requirements.
6.How does Aetrix verify that MXLDA3KP12A is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP12A 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 MXLDA3KP12A meets industry standards.
7.What is the process for return or replacement of MXLDA3KP12A?
All MXLDA3KP12A units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP12A, 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 MXLDA3KP12A part is unused and in its original packaging.
Return procedure for MXLDA3KP12A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP12A Tags
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