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Microchip Technology MXLDA3KP26A
- Part No.:
- MXLDA3KP26A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP26A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:5,293
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Product details
Overview
MXLDA3KP26A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (V(BR)), and 42.1 V clamping voltage (VC) at 71.2 A peak pulse current. 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 MXLDA3KP26A datasheet, MXLDA3KP26A pinout, MXLDA3KP26A application, or MXLDA3KP26A equivalent, key selection criteria include its 26 V working voltage rating, 42.1 V clamping performance at 71.2 A, <100 ps response time, RoHS-compliant void-free epoxy package, and MIL-PRF-19500 upscreening capability for high-reliability deployments.
Technical Context
The MXLDA3KP26A operates as a unidirectional avalanche diode-based TVS, designed to clamp transients before downstream circuitry exceeds safe voltage thresholds. Its 26 V VWM ensures compatibility with 24 V nominal DC systems, while its 42.1 V VC at IPP = 71.2 A defines the maximum voltage seen by protected components during a 10/1000 µs surge.
It features a thermally robust transfer-molded UL94V-0 epoxy package with tin-lead or matte-tin terminations, rated for -55 °C to +150 °C junction temperature. Polarity is defined by odd-numbered pins as cathodes, and it undergoes 100% surge testing per production lot.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous operating voltage before clamping initiates; matches 24 V rail systems with margin |
| V(BR) min/max | 28.9–31.9 V @ 1 mA - Ensures reliable avalanche turn-on above normal operating voltage |
| VC @ IPP | 42.1 V @ 71.2 A - Peak voltage imposed on protected circuit during full 3 kW transient |
| PPP | 3000 W @ 10/1000 µs - Sustains high-energy surges common in industrial motor drives and power supplies |
| Response time | <100 ps - Clamps ESD events before logic or analog circuitry is damaged |
| ID @ VWM | 2 µA - Negligible leakage at rated standoff, preserving low-power system integrity |
| TJ range | -55 to +150 °C - Supports operation in extended-temperature industrial and aerospace environments |
Pinout & Package
MXLDA3KP26A uses a 3-pin surface-mount DO-214AB (SMC) package with void-free UL94V-0 epoxy body, matte-tin or tin-lead terminations, and polarity marked by a dot indicating Pin 1 (cathode). Odd-numbered pins are cathodes per device channel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts surge current to ground when voltage exceeds V(BR) |
| Pin 2 | Anode | Common anode connection; tied to system ground reference for unidirectional clamping |
| Pin 3 | Cathode | Second cathode terminal; enables dual-channel layout or parallel configuration for higher current handling |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Handles 10/1000 µs surges up to 3 kW without degradation-critical for industrial AC/DC front-ends |
| RoHS-compliant e3 marking | Meets global environmental compliance requirements without sacrificing thermal or electrical performance |
| MIL-PRF-19500 upscreening option | Enables high-reliability qualification for defense, avionics, and space-grade applications |
| Moisture sensitivity Level 1 | No dry pack or baking required prior to reflow-reduces manufacturing overhead and risk of popcorning |
| 3σ lot norm screening on ID | Guarantees standby leakage ≤2 µA across production lots-essential for battery-backed or ultra-low-power systems |
Applications
| Industrial Motor Drives | Telecom Power Feeds |
|---|---|
Use Scenario: Protection of 24 V control inputs and feedback lines against inductive kickback from contactors and solenoids. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches PLC I/O ASICs or microcontrollers. Use Value: Limits voltage excursion to 42.1 V during 71.2 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. | Use Scenario: Surge suppression on -48 V telecom power distribution boards exposed to lightning-induced coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC feed lines upstream of DC-DC converters and PMICs. Use Value: Withstands 3000 W 10/1000 µs transients per IEC61000-4-5 (42 Ω source), maintaining uninterrupted service during field surges. |
| Railway Signaling Interfaces | Renewable Energy Inverters |
Use Scenario: Guarding 24 V sensor bus lines in train-mounted signaling modules subject to EFT bursts and conducted RF. IC Role / Device Role / Timing Role: Fast-response TVS absorbing repetitive 5 kHz EFT bursts per IEC61000-4-4 without parametric shift. Use Value: Sub-100 ps response ensures clamping occurs within first nanosecond of EFT edge, protecting isolated CAN transceivers and ADC front-ends. | Use Scenario: DC-link surge protection in solar string inverters where PV array transients couple into MPPT controller rails. IC Role / Device Role / Timing Role: Secondary clamping stage after MOVs, limiting residual voltage to safe levels for SiC gate drivers. Use Value: 42.1 V clamping at 71.2 A enables coordination with upstream 60 V-rated MOVs, reducing stress on 65 V-rated gate driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A | Lower PPP (400 W), same VWM (26 V), higher VC (42.7 V @ 9.9 A) | Not suitable for 3 kW surge environments; limited to low-energy signal-line protection | Select MXLDA3KP26A when 3000 W surge immunity is required; SMAJ26A only for sub-500 W applications. |
| SMCJ26A | Same package (DO-214AB), 3000 W PPP, but 43.3 V VC @ 69.4 A and wider V(BR) tolerance (28.9–33.1 V) | Higher clamping voltage reduces margin for 3.3 V logic protection; less precise V(BR) window affects threshold consistency | MXLDA3KP26A offers tighter V(BR) (28.9–31.9 V) and lower VC (42.1 V), preferred for noise-sensitive 24 V control systems. |
Compared with SMAJ26A and SMCJ26A, MXLDA3KP26A delivers superior clamping precision (tighter V(BR) spread), lower clamping voltage under full-rated current, and factory-available MIL-PRF-19500 screening-making it optimal for mission-critical 24 V industrial power interfaces requiring guaranteed 3 kW surge resilience.
Availability
MXLDA3KP26A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, railway signaling interfaces, and renewable energy inverters requiring stable component supply and long-term obsolescence management.
Supply support for MXLDA3KP26A 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 engineered specifically for high-energy transient suppression in harsh-environment power electronics, emphasizing surge robustness, thermal stability, and qualification-ready reliability for safety-critical infrastructure.
FAQ
What is the clamping voltage of MXLDA3KP26A at its rated peak pulse current?
The MXLDA3KP26A has a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPP) of 71.2 A under 10/1000 µs waveform conditions. This value represents the highest voltage the protected circuit will experience during a full 3000 W transient event, ensuring downstream 24 V system components remain within safe operating limits. The MXLDA3KP26A achieves this performance with tight process control and validated avalanche characteristics.
Is MXLDA3KP26A RoHS compliant?
Yes, MXLDA3KP26A is RoHS compliant, indicated by the "e3" suffix in its full part marking per Microsemi's nomenclature. It uses annealed matte-tin or tin-lead plating on terminations and a void-free UL94V-0 epoxy body, meeting EU Directive 2011/65/EU requirements without performance trade-offs. The MXLDA3KP26A maintains identical electrical specs and thermal ratings in both RoHS and non-RoHS variants.
Does MXLDA3KP26A support MIL-PRF-19500 screening?
Yes, MXLDA3KP26A supports optional MIL-PRF-19500 upscreening with multiple conformance inspection levels, including wafer lot traceability, 100% surge testing, and 3σ statistical screening on standby current (ID). This capability is documented in Micronote 129 and makes MXLDA3KP26A suitable for defense, avionics, and space applications where high-reliability qualification is mandatory.
What is the standoff voltage rating of MXLDA3KP26A, and how does it relate to system design?
The MXLDA3KP26A has a rated reverse standoff voltage (VWM) of 26 V, meaning it remains non-conductive up to this peak DC or AC voltage across its terminals. This rating is selected to match 24 V nominal industrial systems with sufficient margin to avoid false triggering during normal operation. Engineers must ensure that maximum continuous system voltage does not exceed 26 V to prevent premature conduction and leakage increase in the MXLDA3KP26A.
What package type and pin configuration does MXLDA3KP26A use?
MXLDA3KP26A uses a DO-214AB (SMC) surface-mount package with three terminals: Pin 1 (cathode), Pin 2 (anode), and Pin 3 (cathode). Polarity is marked by a dot adjacent to Pin 1 on the top surface. The package meets UL94V-0 flammability rating, weighs approximately 5 g, and features tin-lead or matte-tin solderable terminations per MIL-STD-750 Method 2026. This configuration supports dual-channel or redundant clamping layouts.
MXLDA3KP26A 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 71.2A
- 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:
- -
MXLDA3KP26A FAQ
1.How can I place an order for MXLDA3KP26A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP26A 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 MXLDA3KP26A reliable?
The price and inventory of MXLDA3KP26A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP26A is usually 5 days.
3.What payment methods are accepted for MXLDA3KP26A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP26A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP26A?
MXLDA3KP26A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP26A 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 MXLDA3KP26A?
For technical support, including MXLDA3KP26A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP26A requirements.
6.How does Aetrix verify that MXLDA3KP26A is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP26A 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 MXLDA3KP26A meets industry standards.
7.What is the process for return or replacement of MXLDA3KP26A?
All MXLDA3KP26A units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP26A, 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 MXLDA3KP26A part is unused and in its original packaging.
Return procedure for MXLDA3KP26A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP26A Tags
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