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Microchip Technology MDA3KP11CA
- Part No.:
- MDA3KP11CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP11CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,409
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Product details
Overview
MDA3KP11CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array designed for high-reliability surge protection in industrial and aerospace systems. It features a 11 V reverse standoff voltage (VWM), 12.2–13.5 V breakdown voltage (V(BR)), 18.2 V maximum clamping voltage at 164.8 A peak pulse current, and operates across –55 °C to +150 °C junction temperature. It protects against IEC61000-4-2 ESD, IEC61000-4-4 EFT, and secondary lightning per IEC61000-4-5 with 42 Ω, 12 Ω, or 2 Ω source impedance.
For engineers reviewing the MDA3KP11CA datasheet, MDA3KP11CA pinout, MDA3KP11CA application, or MDA3KP11CA equivalent, key selection criteria include bidirectional polarity, 18.2 V clamping at 164.8 A, 11 V working voltage, MIL-PRF-19500 upscreening eligibility, and surface-mount DO-214AB package compatibility with high-energy transients in power supply and communication interface protection.
Technical Context
The MDA3KP11CA implements a silicon avalanche diode structure optimized for sub-nanosecond response (<5 ns) to fast-rising transients. Its bidirectional configuration enables symmetrical clamping for AC-coupled or floating signal lines without polarity constraints.
It delivers 3000 W peak pulse power at 10/1000 μs waveform with full surge testing per production lot, and supports derating to 50% power at +125 °C per Figure 3. Standby leakage is limited to 5 μA at 11 V, ensuring minimal impact on upstream bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) min/max | 12.2–13.5 V @ 1 mA - Confirmed avalanche onset range defining reliable turn-on threshold |
| VC @ IPP | 18.2 V @ 164.8 A - Clamped voltage during worst-case 10/1000 μs surge, limiting downstream stress |
| PPP | 3000 W @ 10/1000 μs - Peak transient energy absorption capacity under standardized surge test |
| ID @ VWM | 5 μA - Low leakage ensures negligible standby power loss and signal integrity in high-impedance circuits |
| TJ/TSTG | –55 °C to +150 °C - Extended thermal range supports operation in harsh environments including avionics and motor drives |
| Polarity | Bidirectional - Enables protection of AC signals, differential buses, or ungrounded interfaces without polarity alignment |
Pinout & Package
MDA3KP11CA uses a DO-214AB (SMC) surface-mount package with two terminals: Pin 1 (cathode for unidirectional variant) and Pin 2 (anode). For the bidirectional MDA3KP11CA, both terminals are symmetrical-no anode/cathode distinction-enabling AC-coupled placement. Polarity marking is indicated by a dot on the package top adjacent to Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Input/Output terminal (bidirectional) | Connected to protected line; identical electrical behavior as Terminal 2 due to symmetrical construction |
| Terminal 2 | Input/Output terminal (bidirectional) | Connected to reference plane (e.g., ground or return); interchangeable with Terminal 1 in layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, RS-485, CAN, or Ethernet PHY lines without polarity routing constraints |
| 3000 W peak pulse rating | Withstands high-energy surges from inductive switching or lightning-induced coupling in industrial power electronics |
| MIL-PRF-19500 screening option | Supports high-reliability qualification for aerospace and defense programs requiring wafer lot traceability and 3σ ID screening |
| Sub-5 ns response time | Clamps transients before sensitive ICs experience overvoltage damage, critical for protecting microcontrollers and ADC inputs |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to reflow, reducing manufacturing cost and handling risk |
Applications
| Industrial Motor Drives | Avionics Power Distribution |
|---|---|
Use Scenario: Protection of gate driver control signals and feedback loops in variable-frequency drives exposed to inductive kickback and ground bounce. IC Role / Device Role / Timing Role: TVS array clamping transient spikes on isolated PWM inputs and current-sense amplifier lines. Use Value: Prevents latch-up or permanent damage to isolated gate drivers and precision op-amps during 3000 W surge events. | Use Scenario: Secondary lightning protection on 28 V DC distribution bus feeding flight control actuators and sensor interfaces. IC Role / Device Role / Timing Role: Bidirectional transient suppression on ungrounded or floating power rails compliant with DO-160 Section 22. Use Value: Maintains system uptime by limiting bus voltage excursions to ≤18.2 V during 42 Ω IEC61000-4-5 Class 4 surges. |
| RS-485 Communication Nodes | Medical Imaging Power Supplies |
Use Scenario: Surge protection on half-duplex RS-485 data lines in factory automation networks subject to EFT and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point before transceiver IC. Use Value: Ensures data integrity by suppressing ±18.2 V clamped transients while maintaining <5 μA leakage for low-power bias networks. | Use Scenario: Input-stage protection for switched-mode power supplies in MRI and CT scanner subsystems where EMI immunity is safety-critical. IC Role / Device Role / Timing Role: Primary transient limiter on AC-DC front-end rectifier output and PFC stage inputs. Use Value: Guarantees no degradation of isolation barriers or control ICs during 10/1000 μs surges up to 3000 W. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | 600 W PPP rating, same VWM and bidirectional polarity, DO-214AA package (smaller footprint) | Limited to lower-energy transients; unsuitable for IEC61000-4-5 Class 4 or 3000 W inductive switching | Select when space-constrained and surge threat level is ≤600 W (e.g., consumer-grade RS-485 nodes) |
| 1.5KE11CA | 3000 W PPP but through-hole DO-15 package; higher thermal resistance and longer lead inductance | Not suitable for high-frequency transient suppression due to parasitic inductance; incompatible with SMT-only assembly | Choose only for legacy through-hole designs where board rework is prohibitive and layout allows lead length minimization |
Compared with SMBJ11CA and 1.5KE11CA, the MDA3KP11CA uniquely combines 3000 W surge capability, surface-mount DO-214AB packaging, and MIL-PRF-19500 upscreening eligibility-making it the only option for new high-reliability SMT designs requiring Class 4 lightning immunity and lot-traceable components.
Availability
MDA3KP11CA is available at Aetrix Electronics and suitable for industrial motor drives, avionics power distribution, and RS-485 communication nodes requiring stable component supply and long-term lifecycle assurance.
Supply support for MDA3KP11CA 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 radiation-hardened components for aerospace, defense, and industrial markets.
The MDA series was engineered specifically for mission-critical transient suppression in environments demanding MIL-PRF-19500 compliance, extended temperature operation, and verified 3000 W surge endurance-targeting avionics, rail signaling, and industrial automation.
FAQ
What is the clamping voltage of MDA3KP11CA at its rated peak pulse current?
The MDA3KP11CA has a maximum clamping voltage (VC) of 18.2 V at its peak pulse current (IPP) of 164.8 A under 10/1000 μs waveform conditions. This value is guaranteed per the datasheet's Electrical Characteristics table and defines the upper voltage limit imposed on protected circuitry during a full-rated surge event. The MDA3KP11CA maintains this clamping performance across its operating temperature range, with derating applied above +25 °C per Figure 3.
Is MDA3KP11CA suitable for IEC61000-4-5 Class 4 secondary lightning protection?
Yes, the MDA3KP11CA is explicitly rated for IEC61000-4-5 Class 4 secondary lightning protection when tested with a 42 Ω source impedance, as confirmed in the Applications/Benefits section of the RF01243 datasheet. It meets the required surge current and voltage limits for Class 4 under that impedance condition. The MDA3KP11CA is not rated for Class 4 with 12 Ω or 2 Ω source impedances-those require lower-voltage variants such as MDA3KP6.0CA to MDA3KP18A.
Does MDA3KP11CA have RoHS compliance and what does the 'e3' suffix indicate?
Yes, MDA3KP11CA is RoHS compliant, as indicated by the 'e3' suffix in its full marking per the Part Nomenclature diagram on page 2. The 'e3' designation confirms annealed matte-tin plating meeting JEDEC J-STD-020B Level 1 moisture sensitivity-eliminating dry-pack requirements and enabling standard reflow profiles. The MDA3KP11CA's RoHS status is verified in the manufacturer's official documentation and applies to all units shipped post-compliance transition.
How does the bidirectional configuration of MDA3KP11CA affect PCB layout compared to unidirectional TVS devices?
The bidirectional configuration of MDA3KP11CA eliminates polarity orientation constraints during placement-both terminals are functionally identical, allowing symmetric routing on differential or AC-coupled lines. Unlike unidirectional TVS devices, the MDA3KP11CA requires no anode/cathode alignment check, reducing assembly errors and simplifying layout for interfaces like RS-485 or CAN. Its DO-214AB package and dot-marked Pin 1 still follow standard SMC placement conventions, but the MDA3KP11CA's symmetry removes functional dependency on that marking.
Can MDA3KP11CA be used in parallel to increase surge current handling?
No, MDA3KP11CA is not designed for parallel operation due to mismatch in dynamic impedance and avalanche turn-on characteristics, which would cause current imbalance and potential single-device failure under surge. The datasheet specifies individual device ratings only, with no derating guidance or characterization for paralleling. For higher current handling, select a higher-PPP-rated device such as MDA3KP12CA or consult Microchip's application engineering for validated multi-device architectures. The MDA3KP11CA must be applied as a single, standalone protector per protected line.
MDA3KP11CA 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 164.8A
- 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:
- -
MDA3KP11CA FAQ
1.How can I place an order for MDA3KP11CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP11CA 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 MDA3KP11CA reliable?
The price and inventory of MDA3KP11CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP11CA is usually 5 days.
3.What payment methods are accepted for MDA3KP11CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP11CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP11CA?
MDA3KP11CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP11CA 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 MDA3KP11CA?
For technical support, including MDA3KP11CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP11CA requirements.
6.How does Aetrix verify that MDA3KP11CA is sourced from the original manufacturer or authorized distributors?
All MDA3KP11CA 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 MDA3KP11CA meets industry standards.
7.What is the process for return or replacement of MDA3KP11CA?
All MDA3KP11CA units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP11CA, 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 MDA3KP11CA part is unused and in its original packaging.
Return procedure for MDA3KP11CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP11CA Tags
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