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Microchip Technology MADA3KP12A
- Part No.:
- MADA3KP12A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MADA3KP12A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,108
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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 secondary lightning and ESD protection in industrial power interfaces. It features a 12 V standoff voltage (VWM), 13.3–14.7 V breakdown range (V(BR)), 19.9 V max clamping voltage at 150.6 A peak pulse current, and operates from −55 °C to +150 °C - deployed in telecom power supplies and motor drive I/O protection.
For engineers reviewing the MDA3KP12A datasheet, MDA3KP12A pinout, MDA3KP12A application, or MDA3KP12A equivalent, key selection criteria include standoff voltage matching, clamping performance under 10/1000 µs surge, thermal derating above 25 °C, and compliance with IEC61000-4-5 Class 1–4 secondary lightning testing using 2–42 Ω source impedances.
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 switching surges before downstream circuitry is damaged.
It delivers 3000 W peak pulse power at 10/1000 µs waveform with 19.9 V clamping voltage at 150.6 A IPP, and maintains stable operation across −55 °C to +150 °C junction temperature. Standby leakage is ≤5 µA at 12 V VWM, supporting low-power system monitoring integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 12 V - maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) Range | 13.3–14.7 V @ 1 mA - guaranteed avalanche onset window for predictable turn-on margin |
| VC @ IPP | 19.9 V max @ 150.6 A - limits voltage seen by protected ICs during worst-case 10/1000 µs surge |
| PPP | 3000 W @ 10/1000 µs - energy-handling capacity sufficient for IEC61000-4-5 Class 4 with 42 Ω source |
| ID @ VWM | ≤5 µA - negligible standby loading on 12 V bias rails or sensor reference paths |
| TJ Range | −55 °C to +150 °C - supports deployment in under-hood automotive modules and industrial PLC backplanes |
Pinout & Package
MDA3KP12A uses a 2-pin SMC (DO-214AB) surface-mount package with void-free UL94V-0 epoxy body, matte-tin terminations, and polarity defined by dot marking indicating Pin 1 (cathode). Weight ≈5 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts surge current to ground when voltage exceeds V(BR) |
| Pin 2 | Anode | Connected to system ground; completes low-impedance path for transient energy dissipation |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W Peak Pulse Power | Enables robust protection against IEC61000-4-5 secondary lightning surges up to Class 4 with 42 Ω source impedance |
| 19.9 V Clamping at 150.6 A | Keeps downstream 12 V logic or analog circuits within safe operating voltage during full-rated surge |
| ≤5 µA Leakage @ 12 V | Preserves accuracy in high-impedance sensing nodes and avoids false triggering in low-power wake-up circuits |
| −55 °C to +150 °C Operating Range | Supports use in harsh environments including industrial motor drives and outdoor telecom equipment |
Applications
| Industrial Motor Drive I/O Protection | Telecom DC Power Input Protection |
|---|---|
Use Scenario: Protecting encoder feedback lines and digital I/O ports from inductive kickback and field-induced surges in variable-frequency drives. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground to shunt transients before reaching MCU GPIO or isolation barrier. Use Value: 19.9 V clamping ensures 3.3 V/5 V logic interfaces remain below absolute maximum ratings during 150.6 A surge events. | Use Scenario: Safeguarding −48 V DC telecom power inputs against lightning-induced surges entering via long cable runs. IC Role / Device Role / Timing Role: Primary overvoltage clamp mounted at board edge, upstream of DC-DC converters and hot-swap controllers. Use Value: 3000 W rating sustains multiple IEC61000-4-5 Class 4 surges (42 Ω source) without degradation, ensuring field reliability. |
| Automotive Body Control Module (BCM) Power Rails | Industrial PLC Analog Input Protection |
Use Scenario: Guarding 12 V supply lines feeding microcontrollers and CAN transceivers in under-hood BCMs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-rated TVS placed directly at power entry point to clamp transients before bulk capacitance. Use Value: 12 V VWM matches nominal battery rail; 150 °C max TJ rating allows placement near heat-generating power components. | Use Scenario: Shielding 4–20 mA current-loop analog inputs from EFT bursts and electrostatic discharge in factory-floor instrumentation. IC Role / Device Role / Timing Role: Low-leakage TVS connected across input terminals to prevent op-amp saturation and ADC overrange during ESD events. Use Value: ≤5 µA ID at 12 V VWM avoids introducing offset error into precision current-sense amplifiers. |
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 12 V VWM and DO-214AA package; lower clamping (19.2 V) but reduced surge capacity | Suitable for ESD/EFT-only protection where 3000 W lightning immunity is not required | Select SMBJ12A only if system-level testing confirms 600 W suffices; MDA3KP12A remains mandatory for IEC61000-4-5 compliance. |
| SMCJ12A | 1500 W PPP, DO-214AB package, 19.9 V VC - identical footprint but half the energy rating of MDA3KP12A | Applicable in space-constrained designs needing moderate surge handling without full 3 kW capability | SMCJ12A offers cost and size advantage where 1500 W meets spec; MDA3KP12A required when legacy design mandates 3000 W margin. |
Compared with SMBJ12A and SMCJ12A, the MDA3KP12A provides double the peak pulse power of SMCJ12A and five times that of SMBJ12A - enabling single-device compliance with IEC61000-4-5 Class 4 at 42 Ω, while maintaining identical SMC footprint and thermal robustness to +150 °C.
Availability
MDA3KP12A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power systems, and automotive body control modules requiring stable component supply and long-term obsolescence management.
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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The MDA3KP series was developed specifically for mission-critical transient suppression in harsh-environment power electronics, emphasizing MIL-PRF-19500 screening readiness, lot traceability, and validated 3000 W surge endurance.
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 measured per standard test methods and guarantees the protected circuit will not experience more than 19.9 V during full-rated surge events - critical for safeguarding 12 V rail-sensitive components. The MDA3KP12A datasheet specifies this as an absolute maximum limit across temperature and production lots.
Is MDA3KP12A RoHS compliant?
Yes, MDA3KP12A is RoHS compliant, indicated by the "e3" suffix in its full manufacturer marking per Microsemi's nomenclature guide. The device uses annealed matte-tin plating on terminations and void-free UL94V-0 epoxy packaging, meeting lead-free soldering requirements up to 260 °C for 10 seconds. This compliance is verified in the official RF01243 Rev B datasheet and applies to all units shipped post-RoHS transition.
Does MDA3KP12A support bidirectional operation?
No, MDA3KP12A is a unidirectional TVS device. Its part number lacks the "C" suffix (e.g., MDA3KP12CA), which Microsemi reserves exclusively for bidirectional variants. The MDA3KP12A conducts only during reverse-biased overvoltage events - forward conduction is limited to 4.0 V at 500 A, confirming its intended use as a cathode-to-line protector. For AC or dual-polarity protection, MDA3KP12CA must be selected instead.
What is the maximum operating temperature for MDA3KP12A?
The MDA3KP12A has a specified junction and storage temperature range of −55 °C to +150 °C. This wide range is validated per Microsemi's qualification testing and enables use in under-hood automotive modules, industrial inverters, and outdoor telecom enclosures. Derating of peak pulse power begins above 25 °C per Figure 3 in the RF01243 datasheet, with 50% power capability retained at +125 °C ambient.
How does MDA3KP12A compare to standard SMA/SMB/SMC package TVS diodes in surge rating?
Unlike standard SMA (400 W), SMB (600 W), or SMC (1500 W) TVS diodes, the MDA3KP12A delivers 3000 W peak pulse power in the same SMC (DO-214AB) package - achieved through proprietary die construction and enhanced thermal design. This allows drop-in replacement in existing SMC footprints while raising surge immunity to IEC61000-4-5 Class 4 levels. The MDA3KP12A maintains identical mounting and reflow profiles but doubles the energy handling of typical SMCJ-class devices.
MADA3KP12A 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:
- -
MADA3KP12A FAQ
1.How can I place an order for MADA3KP12A through Aetrix?
Please submit a Request for Quotation (RFQ) for MADA3KP12A 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 MADA3KP12A reliable?
The price and inventory of MADA3KP12A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MADA3KP12A is usually 5 days.
3.What payment methods are accepted for MADA3KP12A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MADA3KP12A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MADA3KP12A?
MADA3KP12A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MADA3KP12A 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 MADA3KP12A?
For technical support, including MADA3KP12A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MADA3KP12A requirements.
6.How does Aetrix verify that MADA3KP12A is sourced from the original manufacturer or authorized distributors?
All MADA3KP12A 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 MADA3KP12A meets industry standards.
7.What is the process for return or replacement of MADA3KP12A?
All MADA3KP12A units undergo pre-shipment inspection (PSI). If there is an issue with MADA3KP12A, 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 MADA3KP12A part is unused and in its original packaging.
Return procedure for MADA3KP12A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MADA3KP12A Tags
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