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Microchip Technology MXLDA3KP40CA
- Part No.:
- MXLDA3KP40CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP40CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,279
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Product details
Overview
MXLDA3KP40CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array in a surface-mount DO-214AB package, designed for high-reliability secondary lightning and ESD protection. It features a 40 V standoff voltage (VWM), 44.4–49.1 V breakdown voltage (V(BR)), 64.5 V clamping voltage (VC) at 46.4 A peak pulse current, and operates from −55 °C to +150 °C.
For engineers reviewing the MXLDA3KP40CA datasheet, MXLDA3KP40CA pinout, MXLDA3KP40CA application, or MXLDA3KP40CA equivalent, key selection criteria include IEC61000-4-5 Class 1–4 compliance with 42 Ω/12 Ω/2 Ω source impedances, bidirectional polarity, RoHS-compliant e3 marking, and 100 ps response time - critical for telecom power interfaces, industrial motor drives, and automotive body control modules.
Technical Context
The MXLDA3KP40CA implements a silicon avalanche diode structure optimized for fast transient suppression with sub-100 ps turn-on latency. Its bidirectional configuration enables symmetrical clamping across both polarities without external circuitry, supporting AC-coupled signal lines and ungrounded bus protection.
It meets IEC61000-4-5 surge immunity requirements under multiple source impedances (42 Ω, 12 Ω, 2 Ω), delivering defined Class 1–4 protection levels. The device is surge-tested per 10/1000 μs waveform and derated above 25 °C per Figure 3, with moisture sensitivity level 1 and no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V maximum working standoff voltage - ensures compatibility with 36 V nominal DC systems without leakage-induced false triggering |
| V(BR) min/max | 44.4–49.1 V breakdown range at 1 mA - guarantees reliable avalanche conduction onset within specified tolerance band |
| VC @ IPP | 64.5 V clamping voltage at 46.4 A peak pulse - limits downstream voltage stress during 3000 W transients |
| PPP | 3000 W peak pulse power rating @ 10/1000 μs - supports high-energy lightning-induced surges per IEC61000-4-5 |
| TJ/TSTG | −55 °C to +150 °C junction/storage temperature - enables deployment in under-hood automotive and industrial environments |
| ID @ VWM | ≤2 μA standby current - minimizes quiescent power loss in always-on protection circuits |
| Response time | <100 ps - provides near-instantaneous clamping for ESD (IEC61000-4-2) and EFT (IEC61000-4-4) |
Pinout & Package
MXLDA3KP40CA uses a DO-214AB (SMC) surface-mount package with two terminals: Pin 1 (cathode) and Pin 2 (anode). Polarity is marked by a dot on the package top; odd-numbered pins are cathodes per Microsemi's MDA series convention. The void-free UL94V-0 epoxy body weighs ~5 g and supports reflow soldering up to 260 °C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line side; defines polarity reference for bidirectional clamping path |
| Pin 2 | Anode | Typically tied to system ground or common reference; completes low-impedance surge shunt path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetric overvoltage clamping on AC or floating DC lines without polarity constraints |
| IEC61000-4-5 Class 1–4 compliance | Validated protection against secondary lightning surges using 42 Ω, 12 Ω, and 2 Ω source impedances |
| MIL-PRF-19500 screening option | Supports high-reliability qualification including wafer lot traceability and 3σ ID screening |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to assembly per IPC/JEDEC J-STD-020B |
| RoHS-compliant e3 marking | Meets lead-free plating and hazardous substance restrictions for global market compliance |
Applications
| Telecom Power Feeds | Industrial Motor Drives |
|---|---|
Use Scenario: Protection of 48 V DC power inputs in base station remote radio units exposed to induced lightning surges. IC Role / Device Role / Timing Role: Bidirectional TVS array clamps differential-mode transients between +48 V and return, preventing damage to DC/DC converters and PMICs. Use Value: Withstands 3000 W surges per IEC61000-4-5 Class 4 (42 Ω), limiting voltage to ≤64.5 V and preserving downstream 75 V-rated components. | Use Scenario: Surge suppression on encoder feedback lines and fieldbus interfaces in servo drive cabinets subject to inductive switching noise. IC Role / Device Role / Timing Role: Fast-response TVS absorbs repetitive 10/1000 μs transients from contactor switching and brake chopper operation. Use Value: Sub-100 ps response ensures clamping before edge-sensitive RS-485 transceivers or resolver-to-digital converters experience latch-up. |
| Automotive Body Control Modules | Medical Imaging Power Supplies |
Use Scenario: Input protection for LIN/CAN power rails in BCMs operating in engine bay environments with thermal cycling and load dump exposure. IC Role / Device Role / Timing Role: Bidirectional clamping protects against reverse battery, jump-start transients, and ISO 7637-2 Pulse 5a/b events. Use Value: −55 °C to +150 °C rating ensures stable VWM and VC performance across full automotive temperature range without derating penalties. | Use Scenario: Secondary-side overvoltage protection on isolated 24 V auxiliary supplies powering X-ray detector ASICs and analog front-ends. IC Role / Device Role / Timing Role: TVS array placed post-isolation transformer to suppress coupling-induced transients from high-voltage generator switching. Use Value: 2 μA max ID at 40 V prevents measurable leakage current that could disrupt low-noise bias networks in imaging signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40CA | 600 W PPP rating vs. 3000 W; same VWM and bidirectional polarity; DO-214AA package (smaller footprint) | Limited to lower-energy transients (e.g., ESD/EFT only); unsuitable for IEC61000-4-5 Class 3–4 lightning | Select SMBJ40CA only when space-constrained layouts require smaller package and surge energy is ≤600 W |
| SMCJ40CA | 1500 W PPP rating; identical DO-214AB package and pinout; same VWM/V(BR)/VC specs within tolerance | Provides mid-tier surge capability - adequate for Class 1–2 lightning but not Class 3–4 per 42 Ω test | Choose SMCJ40CA where cost optimization is prioritized and full 3000 W rating is not mandated by end-equipment standards |
Compared with MXLDA3KP40CA, SMBJ40CA offers reduced footprint but only 20% of the peak pulse power, while SMCJ40CA shares the same package and basic electrical specs but delivers half the surge energy handling - making MXLDA3KP40CA the sole choice for Class 4 secondary lightning compliance in high-reliability systems.
Availability
MXLDA3KP40CA is available at Aetrix Electronics and suitable for telecom infrastructure, industrial motor control, and automotive body electronics requiring stable component supply, long-term lifecycle support, and MIL-PRF-19500 screening capability.
Supply support for MXLDA3KP40CA 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 mission-critical transient suppression in harsh environments, emphasizing surge robustness, temperature stability, and process traceability - aligning with MIL-PRF-19500 and IEC61000-4-x compliance requirements.
FAQ
What is the clamping voltage of MXLDA3KP40CA at its rated peak pulse current?
The MXLDA3KP40CA has a maximum clamping voltage (VC) of 64.5 V at its rated peak pulse current (IPP) of 46.4 A under 10/1000 μs waveform conditions. This value is measured per standard test methods and ensures predictable voltage limiting during surge events. The MXLDA3KP40CA maintains this clamping performance across its full operating temperature range when properly derated above 25 °C per Figure 3 in the datasheet.
Is MXLDA3KP40CA compatible with lead-free reflow soldering processes?
Yes, MXLDA3KP40CA supports lead-free reflow soldering with a maximum solder temperature of 260 °C for 10 seconds, as specified in the mechanical ratings. Its matte-tin plating complies with MIL-STD-750 Method 2026, ensuring reliable wetting and intermetallic formation. The MXLDA3KP40CA also carries e3 RoHS marking, confirming full compliance with JEDEC J-STD-020B Level 1 moisture sensitivity - eliminating the need for dry packing or pre-bake.
How does the bidirectional design of MXLDA3KP40CA affect its use in DC circuits?
The bidirectional design of MXLDA3KP40CA allows it to clamp overvoltages of either polarity relative to its terminals, making it ideal for protecting AC-coupled signals or floating DC buses where polarity reversal may occur. In DC circuits, it functions identically across both directions - for example, clamping positive transients from line-to-ground and negative transients from ground-to-line. The MXLDA3KP40CA achieves this without external components, simplifying layout versus unidirectional TVS pairs.
Does MXLDA3KP40CA meet IEC61000-4-5 Class 4 requirements?
Yes, MXLDA3KP40CA meets IEC61000-4-5 Class 4 requirements when tested with a 42 Ω source impedance, as confirmed in the Applications/Benefits section of the datasheet. It also satisfies Class 1–3 with 12 Ω and Class 2 with 2 Ω source impedance configurations. The MXLDA3KP40CA's 3000 W peak pulse power rating and validated clamping behavior under these waveforms make it suitable for equipment requiring highest-level secondary lightning immunity.
What is the significance of the "C" suffix in MXLDA3KP40CA?
The "C" suffix in MXLDA3KP40CA explicitly denotes bidirectional polarity, distinguishing it from unidirectional variants like MXLDA3KP40A. Per Microsemi's nomenclature guide (Page 2), "C = Bidirectional", and this designation governs both electrical behavior and marking conventions - including the absence of anode/cathode asymmetry and symmetrical V(BR) characteristics. The MXLDA3KP40CA's C-suffix is integral to its function and must be preserved in BOMs and procurement records.
MXLDA3KP40CA 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:
- -
- Bidirectional Channels:
- 8
- 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:
- -
MXLDA3KP40CA FAQ
1.How can I place an order for MXLDA3KP40CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP40CA 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 MXLDA3KP40CA reliable?
The price and inventory of MXLDA3KP40CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP40CA is usually 5 days.
3.What payment methods are accepted for MXLDA3KP40CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP40CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP40CA?
MXLDA3KP40CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP40CA 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 MXLDA3KP40CA?
For technical support, including MXLDA3KP40CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP40CA requirements.
6.How does Aetrix verify that MXLDA3KP40CA is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP40CA 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 MXLDA3KP40CA meets industry standards.
7.What is the process for return or replacement of MXLDA3KP40CA?
All MXLDA3KP40CA units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP40CA, 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 MXLDA3KP40CA part is unused and in its original packaging.
Return procedure for MXLDA3KP40CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP40CA Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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