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Microchip Technology MDA3KP26CA
- Part No.:
- MDA3KP26CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP26CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:5,203
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Product details
Overview
MDA3KP26CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array in a surface-mount package, designed for high-reliability secondary lightning protection per IEC61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), ESD suppression per IEC61000-4-2, and EFT protection per IEC61000-4-4. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown range (V(BR)), and clamps to ≤42.1 V at 71.2 A peak pulse current (IPP).
For engineers reviewing the MDA3KP26CA datasheet, MDA3KP26CA pinout, MDA3KP26CA application, or MDA3KP26CA equivalent, this device is selected for robust overvoltage protection in telecom interfaces, industrial control I/O, automotive body electronics, and power supply input stages where fast response (<5 ns), high surge capability, and bidirectional polarity are required.
Technical Context
The MDA3KP26CA operates as a silicon avalanche diode-based TVS array with symmetrical bidirectional clamping behavior, enabling protection of AC-coupled or differential signal lines without polarity constraints. Its sub-5 ns response time ensures effective suppression of ESD events and fast transients before downstream circuitry is damaged.
It is rated for 3000 W peak pulse power at the standard 10/1000 µs waveform, with full surge testing performed per unit and 3σ lot norm screening on standby current (ID). The device meets MIL-PRF-19500 high-reliability screening options and is RoHS-compliant (e3 marking).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous operating voltage before clamping begins; matches 24 V nominal systems with margin. |
| V(BR) min/max | 28.9–31.9 V - Breakdown occurs within this range at 1 mA; ensures predictable turn-on across temperature and lot variation. |
| VC @ IPP | ≤42.1 V - Clamping voltage at 71.2 A peak pulse; defines worst-case voltage seen by protected IC during surge. |
| IPP | 71.2 A - Peak impulse current supported at 10/1000 µs; determines survivability under IEC61000-4-5 Class 3 (12 Ω) surges. |
| ID @ VWM | ≤2 µA - Standby leakage at 26 V; negligible power loss and no measurable impact on high-impedance circuits. |
| TJ/TSTG | −55 to +150 °C - Extended thermal range supports operation in under-hood automotive and industrial environments. |
Pinout & Package
MDA3KP26CA uses a 3-pin surface-mount DO-214AB (SMC) package with void-free UL94V-0 epoxy body, tin-lead or matte-tin plating, and polarity defined by a dot marking indicating Pin 1. Odd-numbered pins (1 and 3) are cathodes; Pin 2 is the common anode for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Channel A) | One terminal of the first TVS junction; connects to line being protected (e.g., Line+ of RS-485). |
| Pin 2 | Common Anode | Shared anode node enabling bidirectional clamping between Pins 1 and 3; requires no external bias. |
| Pin 3 | Cathode (Channel B) | Second TVS junction terminal; used with Pin 2 to clamp reverse polarity transients (e.g., Line− of RS-485). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetric clamping on AC or differential signals without polarity-sensitive layout or external components. |
| 3000 W peak pulse rating @ 10/1000 µs | Supports IEC61000-4-5 Class 3 (12 Ω) and Class 4 (42 Ω) surge immunity without derating at 25 °C. |
| Sub-5 ns response time | Clamps ESD events (IEC61000-4-2) before logic-level ICs experience latch-up or gate oxide damage. |
| MIL-PRF-19500 upscreening option | Enables use in aerospace, defense, and critical infrastructure where wafer/lot traceability and extended reliability testing are mandated. |
Applications
| Telecom Interface Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting RS-485/RS-422 transceivers in outdoor base stations exposed to induced lightning surges and ESD. IC Role / Device Role / Timing Role: Bidirectional TVS array clamping differential data lines to limit voltage excursion during 1 kV/2 kV IEC61000-4-5 surges. Use Value: Prevents transceiver latch-up or permanent failure while maintaining signal integrity due to low capacitance and fast response. | Use Scenario: Safeguarding analog input channels (4–20 mA, 0–10 V) on programmable logic controller modules in factory automation. IC Role / Device Role / Timing Role: Front-end transient suppressor absorbing inductive kickback from solenoid drivers and relay coils. Use Value: Eliminates need for discrete RC snubbers or varistors, reducing BOM count and PCB area while meeting IEC61000-4-4 EFT immunity. |
| Automotive Body Control Module | AC/DC Power Supply Input Stage |
Use Scenario: Protecting LIN bus transceivers and sensor inputs in door modules subjected to load dump and ESD per ISO 10605. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching MCU GPIOs. Use Value: Achieves >15 kV contact ESD robustness without compromising signal rise time or adding propagation delay. | Use Scenario: Secondary surge protection on offline AC-DC adapter inputs after MOV primary stage, targeting residual 10/1000 µs surges. IC Role / Device Role / Timing Role: Fast-acting TVS limiting let-through voltage to <42.1 V during high-energy transients that bypass bulk MOV clamping. Use Value: Extends lifetime of bridge rectifier and bulk capacitor by reducing peak stress during repeated surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA | 600 W rating (vs. 3000 W); same VWM and bidirectional polarity; DO-214AA package (smaller footprint). | Lower energy handling limits use to lower-risk ESD/EFT-only scenarios; unsuitable for IEC61000-4-5 Class 3/4. | Select when space-constrained and surge threat level is limited to IEC61000-4-2/4 only. |
| SMCJ26CA | 1500 W rating (vs. 3000 W); identical VWM, VC, and DO-214AB package; lower IPP (50 A vs. 71.2 A). | Meets IEC61000-4-5 Class 2 (2 Ω) but not Class 3 (12 Ω) at full rating; requires derating above 85 °C. | Choose when cost sensitivity outweighs need for full 3000 W headroom and MIL-grade reliability is not required. |
Compared with SMBJ26CA and SMCJ26CA, the MDA3KP26CA delivers 5× and 2× higher peak pulse power respectively, enabling compliance with stringent secondary lightning standards and supporting high-reliability screening-critical for aerospace, industrial, and automotive safety-critical subsystems.
Availability
MDA3KP26CA is available at Aetrix Electronics and suitable for telecom interface protection, industrial PLC I/O protection, and automotive body control module designs requiring stable component supply, long-term lifecycle support, and traceable high-reliability sourcing.
Supply support for MDA3KP26CA 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 MDA series was developed specifically for mission-critical overvoltage protection in harsh electromagnetic environments, emphasizing surge survivability, lot traceability, and compliance with MIL-PRF-19500 screening requirements.
FAQ
What is the clamping voltage of the MDA3KP26CA at its rated peak pulse current?
The MDA3KP26CA has a maximum clamping voltage (VC) of 42.1 V when subjected to its rated peak pulse current (IPP) of 71.2 A under the standard 10/1000 µs waveform. This value is guaranteed across temperature and manufacturing lots, ensuring consistent protection margin for downstream 3.3 V or 5 V logic interfaces.
Is the MDA3KP26CA suitable for IEC61000-4-5 Class 4 secondary lightning protection?
Yes, the MDA3KP26CA is explicitly rated for IEC61000-4-5 Class 4 secondary lightning protection when tested with a 42 Ω source impedance. Its 3000 W peak pulse power rating and verified clamping performance at 71.2 A enable compliance without derating at 25 °C, as confirmed in Microsemi's RF01243 datasheet.
How does the bidirectional configuration of the MDA3KP26CA affect its PCB layout?
The MDA3KP26CA's bidirectional design eliminates polarity concerns during placement: Pins 1 and 3 serve as symmetrical cathodes tied to protected lines, while Pin 2 is the common anode. This allows direct placement across differential pairs (e.g., RS-485 A/B) without orientation checks, simplifying layout and reducing assembly errors versus unidirectional TVS arrays.
Does the MDA3KP26CA require external current-limiting resistors in series?
No, the MDA3KP26CA does not require external series resistors. Its low dynamic impedance and fast response enable self-limiting behavior during transients. Series resistors are only needed if system-level current sharing or signal attenuation requirements dictate additional impedance-otherwise, they degrade clamping speed and increase let-through voltage.
What is the moisture sensitivity level (MSL) of the MDA3KP26CA, and does it require dry pack handling?
The MDA3KP26CA is rated MSL Level 1 per IPC/JEDEC J-STD-020B, meaning it has unlimited floor life and does not require dry pack storage or baking prior to reflow. This simplifies manufacturing logistics and eliminates moisture-related popcorning risk during lead-free soldering at 260 °C.
MDA3KP26CA 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):
- 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:
- -
MDA3KP26CA FAQ
1.How can I place an order for MDA3KP26CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP26CA 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 MDA3KP26CA reliable?
The price and inventory of MDA3KP26CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP26CA is usually 5 days.
3.What payment methods are accepted for MDA3KP26CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP26CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP26CA?
MDA3KP26CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP26CA 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 MDA3KP26CA?
For technical support, including MDA3KP26CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP26CA requirements.
6.How does Aetrix verify that MDA3KP26CA is sourced from the original manufacturer or authorized distributors?
All MDA3KP26CA 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 MDA3KP26CA meets industry standards.
7.What is the process for return or replacement of MDA3KP26CA?
All MDA3KP26CA units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP26CA, 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 MDA3KP26CA part is unused and in its original packaging.
Return procedure for MDA3KP26CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP26CA Tags
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