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Microchip Technology MDA3KP12A
- Part No.:
- MDA3KP12A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP12A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,948
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Product details
Overview
MDA3KP12A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array designed for high-reliability overvoltage protection in power rails and signal lines. It features a 12 V reverse standoff voltage (VWM), 13.3–14.7 V breakdown voltage (V(BR)), 19.9 V maximum clamping voltage at 150.6 A peak pulse current, and operates from –55 °C to +150 °C - used in industrial motor drives, telecom power supplies, and automotive ECUs.
For engineers reviewing the MDA3KP12A datasheet, MDA3KP12A pinout, MDA3KP12A application, or MDA3KP12A equivalent, key selection criteria include clamping performance under 10/1000 µs surge, standoff voltage margin relative to system DC rail, thermal derating above 25 °C, and compliance with IEC61000-4-2/4-4/4-5 secondary lightning standards.
Technical Context
The MDA3KP12A is a single-channel unidirectional TVS diode optimized for fast clamping of high-energy transients. Its <100 ps response time enables effective suppression of ESD (IEC61000-4-2), EFT (IEC61000-4-4), and induced surges per IEC61000-4-5 with 42 Ω, 12 Ω, or 2 Ω source impedance - supporting Class 1–4 secondary lightning protection depending on test configuration.
It uses a void-free thermosetting epoxy package rated UL94V-0, with tin-lead or matte-tin plating compliant with MIL-STD-750 Method 2026. Polarity is defined by dot marking; odd-numbered pins are cathodes. All units undergo lot-level surge testing and 3σ screening on standby current (ID).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) min/max | 13.3–14.7 V @ 1 mA - ensures reliable turn-on before downstream IC damage thresholds |
| VC @ IPP | 19.9 V @ 150.6 A - limits voltage seen by protected circuit during worst-case 10/1000 µs surge |
| PPP | 3000 W @ 10/1000 µs - defines energy-handling capability for repetitive surge events |
| ID @ VWM | 5 µA max - negligible leakage at operating voltage, critical for low-power sensor rails |
| TJ/TSTG | –55 °C to +150 °C - supports deployment in under-hood automotive and industrial environments |
Pinout & Package
MDA3KP12A is housed in a surface-mount, void-free thermosetting epoxy package (UL94V-0) with two terminals. Pin 1 is cathode, marked by a dot on top of the body; polarity follows standard unidirectional TVS convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts when transient exceeds V(BR), shunting current to ground |
| Pin 2 | Anode | Typically tied to system ground or low-impedance return path for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Enables robust protection against high-energy switching transients and lightning-induced surges |
| 19.9 V clamping at 150.6 A | Keeps protected ICs within safe operating voltage during 10/1000 µs surge events |
| –55 °C to +150 °C operation | Validates use in extended-temperature automotive and industrial control applications |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring military-grade wafer and assembly traceability |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensing circuits from IGBT switching spikes and bus transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus or gate resistor to clamp positive-going overvoltages. Use Value: Limits transient voltage to ≤19.9 V during 150.6 A surges, preventing MOSFET gate oxide rupture and op-amp input damage. | Use Scenario: Input-stage surge protection on 48 V telecom rectifier outputs exposed to lightning-induced coupling. IC Role / Device Role / Timing Role: Primary clamping device on DC output rail, coordinated with upstream MOVs and filters. Use Value: Meets IEC61000-4-5 Class 4 (42 Ω source) with <100 ps response, reducing need for additional series impedance. |
| Automotive Engine Control Units | Industrial PLC I/O Modules |
Use Scenario: Protection of LIN/CAN transceiver power pins against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply rail, selected for 12 V VWM to match nominal battery voltage. Use Value: Withstands 3000 W surges while maintaining <5 µA leakage at 12 V, preserving low-quiescent-current design goals. | Use Scenario: Analog input channel protection against field-wiring ESD and inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Low-leakage TVS on signal conditioning front-end, placed before precision amplifier inputs. Use Value: 5 µA max ID at VWM prevents DC offset errors in 24-bit ADC reference paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | 600 W PPP rating, same VWM and VC, but lower IPP (62.5 A) | Not suitable for Class 4 IEC61000-4-5 with 42 Ω source; limited to Class 1–2 | Select MDA3KP12A where 3000 W surge handling is required; SMBJ12A fits space-constrained, lower-energy designs. |
| SMCJ12A | 1500 W PPP, 19.9 V VC, 125 A IPP - half the power rating of MDA3KP12A | Valid for Class 3 IEC61000-4-5 (42 Ω), but fails Class 4; requires parallel devices for equivalent energy handling | Choose MDA3KP12A when single-device 3000 W capability is mandatory; SMCJ12A suits cost-sensitive mid-tier protection. |
Compared with SMBJ12A and SMCJ12A, the MDA3KP12A delivers double the surge power handling of SMCJ12A and five times that of SMBJ12A - enabling fewer components, higher reliability, and direct compliance with IEC61000-4-5 Class 4 in single-device configurations.
Availability
MDA3KP12A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive engine control units requiring stable component supply across long production lifecycles.
Supply support for MDA3KP12A 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 to deliver MIL-PRF-19500-qualified transient suppression for mission-critical systems where failure is not an option - emphasizing surge robustness, temperature resilience, and full-lot traceability.
FAQ
What is the clamping voltage of MDA3KP12A at its rated peak pulse current?
The MDA3KP12A has a maximum clamping voltage (VC) of 19.9 V at its rated peak pulse current (IPP) of 150.6 A under 10/1000 µs waveform conditions. This value is guaranteed across temperature and represents the upper limit of voltage imposed on the protected circuit during worst-case surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is MDA3KP12A RoHS-compliant?
Yes, MDA3KP12A is RoHS-compliant, indicated by the "e3" suffix in its full marking per Microsemi's nomenclature. The device uses annealed matte-tin plating and void-free thermosetting epoxy packaging meeting UL94V-0, with no lead exemptions required - fully compliant with Directive 2011/65/EU and subsequent amendments.
Can MDA3KP12A be used for bidirectional protection?
No, MDA3KP12A is unidirectional only. Its part number lacks the "C" suffix (e.g., MDA3KP12CA), which denotes bidirectional construction. For AC-line or differential-signal protection requiring symmetrical clamping, the MDA3KP12CA variant must be selected - the MDA3KP12A conducts only for positive transients relative to its cathode.
What is the maximum standoff voltage (VWM) for MDA3KP12A?
The maximum reverse standoff voltage (VWM) for MDA3KP12A is 12 V. This is the highest continuous DC or peak AC voltage the device will block without significant leakage - selected to match nominal 12 V systems such as automotive battery rails or industrial control power supplies, ensuring reliable blocking during normal operation while triggering promptly during overvoltage events.
Does MDA3KP12A require dry-pack moisture protection before reflow?
No, MDA3KP12A has IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it is not moisture-sensitive and does not require dry pack storage or floor-life controls. The device may be stored and processed directly without baking, simplifying manufacturing flow and eliminating moisture-related popcorning risk during reflow soldering at 260 °C peak temperature.
MDA3KP12A 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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 150.6A
- 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:
- -
MDA3KP12A FAQ
1.How can I place an order for MDA3KP12A through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP12A 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 MDA3KP12A reliable?
The price and inventory of MDA3KP12A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP12A is usually 5 days.
3.What payment methods are accepted for MDA3KP12A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP12A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP12A?
MDA3KP12A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP12A 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 MDA3KP12A?
For technical support, including MDA3KP12A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP12A requirements.
6.How does Aetrix verify that MDA3KP12A is sourced from the original manufacturer or authorized distributors?
All MDA3KP12A 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 MDA3KP12A meets industry standards.
7.What is the process for return or replacement of MDA3KP12A?
All MDA3KP12A units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP12A, 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 MDA3KP12A part is unused and in its original packaging.
Return procedure for MDA3KP12A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP12A Tags
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