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Microchip Technology MXLDA3KP40A
- Part No.:
- MXLDA3KP40A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP40A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,826
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Product details
Overview
MXLDA3KP40A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 40 V standoff voltage (VWM), 44.4–49.1 V breakdown voltage (V(BR)), and 64.5 V clamping voltage (VC) at 46.4 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 DC power rails.
For engineers reviewing the MXLDA3KP40A datasheet, MXLDA3KP40A pinout, MXLDA3KP40A application, or MXLDA3KP40A equivalent, key selection criteria include its 40 V working voltage, 64.5 V clamping performance at 46.4 A, -55 to +150 °C operating range, RoHS-compliant void-free epoxy package, and MIL-PRF-19500 upscreening capability for high-reliability systems.
Technical Context
The MXLDA3KP40A is a single-channel unidirectional TVS diode designed for fast-clamping overvoltage transients on DC power lines. Its <100 ps response time enables effective suppression of ESD (IEC61000-4-2), EFT (IEC61000-4-4), and lightning-induced surges (IEC61000-4-5). It operates with 2 µA standby current at 40 V and withstands 200 A forward surge current (8.3 ms half-sine).
Rated for 3000 W peak pulse power at 10/1000 µs waveform, it delivers 64.5 V clamping voltage at 46.4 A IPP while maintaining thermal stability across -55 to +150 °C junction temperature. Its tin-lead or matte-tin terminations ensure solderability per MIL-STD-750 Method 2026, and moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous DC operating voltage before clamping begins; matches 36–40 V nominal DC bus rails. |
| V(BR) min/max | 44.4–49.1 V - Breakdown occurs within this range at 1 mA; ensures reliable turn-on margin above VWM. |
| VC @ IPP | 64.5 V at 46.4 A - Clamping voltage during 10/1000 µs surge; defines maximum stress on downstream ICs. |
| PPP | 3000 W @ 10/1000 µs - Peak power handling capacity; supports high-energy industrial transients. |
| ID @ VWM | 2 µA - Ultra-low leakage at rated standoff; avoids unnecessary power loss in battery-backed systems. |
| TJ/TSTG | -55 to +150 °C - Wide operating and storage range suitable for automotive under-hood and industrial control environments. |
| Package | Void-free thermosetting epoxy, UL94V-0 - Flame-retardant, mechanically robust housing for harsh environments. |
Pinout & Package
MXLDA3KP40A uses a 2-pin surface-mount package with cathode-anode polarity: Pin 1 is cathode (marked by dot), Pin 2 is anode. The device is unidirectional and intended for DC rail protection where anode connects to ground or low-side return path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line (e.g., +40 V rail); clamps when voltage exceeds V(BR) relative to anode. |
| Pin 2 | Anode | Connected to reference potential (e.g., ground or low-side return); completes conduction path during transient. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse rating | Enables robust protection against high-energy lightning surges (IEC61000-4-5 Class 4, 42 Ω source) without degradation. |
| 64.5 V clamping at 46.4 A | Limits voltage overshoot to safe levels for 3.3 V–48 V logic and power ICs downstream of the protected rail. |
| 2 µA ID @ 40 V | Minimizes standby current draw in always-on systems such as remote sensors and telecom backup modules. |
| MIL-PRF-19500 upscreening option | Supports high-reliability qualification including lot traceability, 3σ screening on ID, and surge testing per military standards. |
| UL94V-0 void-free epoxy case | Provides mechanical integrity and flame resistance in enclosed industrial enclosures and transportation electronics. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 48 V DC input stage against inductive kickback from relay coils and contactor switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +48 V rail and ground to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Withstands 3000 W surges and clamps to ≤64.5 V, preventing latch-up or gate oxide damage in downstream SiC MOSFET drivers and PMICs. | Use Scenario: Input-stage surge protection for AC/DC rectified 48 V telecom power supplies exposed to lightning-induced coupling on building feeders. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk DC bus prior to PFC controller and isolation transformer primary side. Use Value: Meets IEC61000-4-5 Class 4 (42 Ω source) requirements with 64.5 V clamping, ensuring compliance without additional series impedance. |
| Railway Signaling Systems | Renewable Energy Inverters |
Use Scenario: Protection of 36 V auxiliary control rails in signaling cabinets subject to long-line induced surges and EFT bursts. IC Role / Device Role / Timing Role: Fast-response TVS on 36 V logic supply feeding FPGA configuration circuits and optocoupler interfaces. Use Value: <100 ps response time and 2 µA leakage preserve signal integrity and battery life in fail-safe monitoring subsystems. | Use Scenario: DC link protection in solar string inverters where PV array open-circuit voltage reaches ~40 V under STC. IC Role / Device Role / Timing Role: Standoff-rated TVS on ungrounded DC+ rail to absorb reverse-polarity connection transients and lightning coupling. Use Value: 40 V VWM aligns precisely with 36–40 V system design margins; 150 °C max TJ supports operation inside sealed outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ40A | 600 W PPP rating, 64.5 V VC @ 9.3 A IPP, DO-214AC package | Lower energy handling; suitable only for ESD/EFT, not Class 4 lightning | Select SMAJ40A only for cost-sensitive consumer-grade designs with sub-1 kW surge exposure. |
| SMCJ40A | 1500 W PPP rating, 64.5 V VC @ 23.3 A IPP, DO-214AB package | Half the peak power of MXLDA3KP40A; requires derating for repeated surges | Choose SMCJ40A where board space allows larger DO-214AB footprint and system-level testing confirms 1500 W adequacy. |
Compared with SMAJ40A and SMCJ40A, the MXLDA3KP40A delivers double the surge energy capacity of SMCJ40A and five times that of SMAJ40A-enabling single-device compliance with IEC61000-4-5 Class 4 at 42 Ω without parallel staging or external current sharing.
Availability
MXLDA3KP40A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, railway signaling systems, and renewable energy inverters requiring stable component supply across extended product lifecycles.
Supply support for MXLDA3KP40A 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 for mission-critical DC power rail protection, emphasizing surge robustness, low leakage, and military-grade screening readiness-targeting applications where failure is not an option.
FAQ
What is the clamping voltage of the MXLDA3KP40A at its rated peak pulse current?
The MXLDA3KP40A has a maximum clamping voltage (VC) of 64.5 V at 46.4 A peak pulse current (IPP) under 10/1000 µs waveform conditions. This value is guaranteed per the RF01243 datasheet and defines the upper voltage limit imposed on protected circuitry during a full-rated surge event. Designers use this parameter to verify that downstream components remain within absolute maximum ratings during transient events. The MXLDA3KP40A maintains this clamping performance across its full operating temperature range.
Is the MXLDA3KP40A RoHS compliant?
Yes, the MXLDA3KP40A 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 void-free thermosetting epoxy body meeting UL94V-0. All materials and processes comply with Directive 2011/65/EU, and no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE substances exceed threshold limits. The MXLDA3KP40A is suitable for environmentally regulated industrial and telecom deployments.
Can the MXLDA3KP40A be used for bidirectional transient protection?
No, the MXLDA3KP40A is a unidirectional TVS device, as confirmed by its "A" suffix and absence of "C" in the part number. Bidirectional variants (e.g., MXLDA3KP40CA) exist in the same family but feature symmetrical clamping in both polarities. Using the MXLDA3KP40A on AC-coupled or floating lines risks reverse-bias breakdown below its 40 V VWM. For bidirectional protection, select the C-suffixed version or confirm polarity alignment in DC-only applications. The MXLDA3KP40A must be oriented with cathode toward the protected line.
What is the maximum operating temperature for the MXLDA3KP40A?
The MXLDA3KP40A has a maximum junction and storage temperature of +150 °C, with a minimum of -55 °C, as specified in the RF01243 datasheet Absolute Maximum Ratings table. This wide thermal range supports deployment in under-hood automotive modules, railway cabinets, and outdoor renewable energy enclosures. Derating curves (Figure 3) show that peak pulse power decreases linearly above 25 °C ambient, reaching ~70% of 3000 W at 100 °C case temperature. The MXLDA3KP40A remains fully functional and tested across this entire range.
Does the MXLDA3KP40A require dry pack packaging per J-STD-020B?
No, the MXLDA3KP40A has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it is not moisture-sensitive and does not require dry pack packaging or floor life controls. The device's void-free epoxy encapsulation prevents moisture ingress, eliminating bake requirements prior to reflow. This simplifies manufacturing logistics and reduces assembly risk in high-volume SMT lines. The MXLDA3KP40A can be stored indefinitely at standard ambient conditions without humidity monitoring or special handling.
MXLDA3KP40A 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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 46.4A
- 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:
- -
MXLDA3KP40A FAQ
1.How can I place an order for MXLDA3KP40A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP40A 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 MXLDA3KP40A reliable?
The price and inventory of MXLDA3KP40A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP40A is usually 5 days.
3.What payment methods are accepted for MXLDA3KP40A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP40A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP40A?
MXLDA3KP40A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP40A 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 MXLDA3KP40A?
For technical support, including MXLDA3KP40A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP40A requirements.
6.How does Aetrix verify that MXLDA3KP40A is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP40A 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 MXLDA3KP40A meets industry standards.
7.What is the process for return or replacement of MXLDA3KP40A?
All MXLDA3KP40A units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP40A, 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 MXLDA3KP40A part is unused and in its original packaging.
Return procedure for MXLDA3KP40A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP40A Tags
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