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Microchip Technology MDA3KP14A
- Part No.:
- MDA3KP14A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP14A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,862
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Product details
Overview
MDA3KP14A 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 14 V reverse standoff voltage (VWM), 15.6–17.2 V breakdown voltage (V(BR)), 23.2 V maximum clamping voltage at 129.4 A peak pulse current, and operates from –55 °C to +150 °C. It is used in DC power input stages of telecom infrastructure equipment.
For engineers reviewing the MDA3KP14A datasheet, MDA3KP14A pinout, MDA3KP14A application, or MDA3KP14A equivalent, key selection criteria include clamping performance under IEC61000-4-5 (42 Ω source, Class 1–4), standoff voltage margin relative to system DC rail, and thermal derating above 25 °C per Figure 3.
Technical Context
The MDA3KP14A employs an avalanche diode structure optimized for sub-100 ps response time in unidirectional configuration, enabling suppression of fast transients including ESD (IEC61000-4-2) and EFT (IEC61000-4-4). Its 3000 W peak pulse power rating is specified at the standard 10/1000 µs waveform with ≤0.05% duty factor.
It is rated for 2 A maximum standby current at 14 V VWM and undergoes full lot surge testing. Polarity is defined by odd-numbered pins as cathodes, and the device meets MIL-PRF-19500 screening options when upscreened.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) min/max | 15.6–17.2 V @ 1 mA - Ensures reliable avalanche initiation above operating rail while avoiding false triggering |
| VC @ IPP | 23.2 V @ 129.4 A - Clamped voltage seen by protected circuit during worst-case 10/1000 µs surge |
| PPP | 3000 W @ 10/1000 µs - Sustains high-energy surges common in industrial power line coupling |
| ID @ VWM | 2 µA max - Negligible leakage at rated standoff, critical for low-power monitoring circuits |
| TJ/TSTG | –55 to +150 °C - Supports operation in harsh environments including outdoor base stations and motor drives |
Pinout & Package
MDA3KP14A uses a 3-pin surface-mount package with void-free UL94V-0 epoxy body and tin-lead or matte-tin terminations. Pin 1 is marked by a dot on top; odd-numbered pins (1 and 3) are cathodes, Pin 2 is the common anode. Package dimensions: 21.03–22.05 mm length × 6.86–7.87 mm width × 8.64–9.65 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of Channel 1 | Connected to protected line (e.g., +12 V rail); clamps positive transients to common anode |
| Pin 2 | Common Anode | Reference node tied to system ground or return path; forms bidirectional clamp when paired with Pin 3 |
| Pin 3 | Cathode of Channel 2 | Used for dual-line protection (e.g., differential bus); shares anode with Pin 1 via internal connection |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Withstands high-energy surges from inductive switching and secondary lightning per IEC61000-4-5 (42 Ω source) |
| Unidirectional construction | Provides asymmetric clamping ideal for DC power rails where only positive-going transients require suppression |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to reflow, reducing manufacturing cost and risk |
| MIL-PRF-19500 upscreening option | Enables use in aerospace and defense systems requiring lot traceability and extended reliability validation |
Applications
| Industrial Power Input Protection | Telecom DC Feeder Protection |
|---|---|
Use Scenario: 24 V DC power entry point in programmable logic controllers exposed to load dump and relay coil flyback. IC Role / Device Role / Timing Role: TVS array clamping transient overvoltage before it reaches upstream DC-DC converter input stage. Use Value: Limits voltage to ≤23.2 V during 129.4 A surge, preventing damage to 28 V-rated input capacitors and MOSFETs. | Use Scenario: -48 V DC feed line in cellular base station remote radio units subjected to induced lightning surges. IC Role / Device Role / Timing Role: Unidirectional TVS shunting positive polarity surges on the return path while maintaining low leakage at steady state. Use Value: 2 µA standby current avoids loading the -48 V supply; 15.6–17.2 V V(BR) ensures robust margin above nominal rail. |
| Motor Drive Control Board | Renewable Energy Inverter Interface |
Use Scenario: Protection of gate driver IC inputs against cross-talk and inductive kick from adjacent IGBT switching. IC Role / Device Role / Timing Role: Fast-response (sub-100 ps) clamping element placed directly at connector entry to minimize PCB trace inductance impact. Use Value: 23.2 V clamping voltage prevents latch-up in 24 V logic-level drivers while surviving repeated 3000 W pulses. | Use Scenario: PV string combiner box DC input stage exposed to nearby lightning strikes per IEC61000-4-5 Class 3 (12 Ω source). IC Role / Device Role / Timing Role: Primary surge suppression device mounted at terminal block, coordinating with upstream MOVs for staged energy handling. Use Value: Validated for Class 1–3 secondary lightning protection with 12 Ω source impedance, enabling compliance without additional components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A | 600 W PPP rating, same VWM and VC, but lower IPP (84.5 A) and smaller SMB package | Not suitable for 3000 W surge events; limited to lower-energy ESD/EFT scenarios | Select MDA3KP14A when IEC61000-4-5 Class 3–4 compliance or 129.4 A surge handling is required |
| SMCJ14A | 1500 W PPP, same VWM, higher VC (25.1 V), DO-214AB package with 100 A IPP | Insufficient for 3000 W lightning surges; acceptable only for moderate inductive switching | MDA3KP14A provides >2× peak power headroom and tighter clamping for mission-critical infrastructure |
Compared with SMBJ14A and SMCJ14A, the MDA3KP14A delivers triple the peak pulse power and superior clamping voltage at rated current-enabling single-device compliance with IEC61000-4-5 Class 4 (42 Ω source) where alternatives require parallel staging or derating.
Availability
MDA3KP14A is available at Aetrix Electronics and suitable for industrial power input protection, telecom DC feeder protection, and motor drive control board designs requiring stable component supply across extended production lifecycles.
Supply support for MDA3KP14A 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 solutions for aerospace, defense, and industrial markets.
The MDA series was developed specifically for ruggedized transient suppression in mission-critical power interfaces where MIL-PRF-19500 screening, wide temperature operation, and guaranteed 3000 W surge capability are mandatory.
FAQ
What is the clamping voltage of MDA3KP14A at its rated peak pulse current?
The MDA3KP14A has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPP) of 129.4 A under 10/1000 µs waveform conditions. This value is measured across the device terminals during standardized surge testing and defines the upper voltage limit imposed on the protected circuit during worst-case transient events.
Is MDA3KP14A RoHS compliant?
Yes, MDA3KP14A is RoHS compliant, indicated by the "e3" suffix in its full marking per Microsemi's nomenclature guide. The device uses annealed matte-tin plating and void-free UL94V-0 epoxy packaging, meeting lead-free soldering requirements and environmental directives without exemption.
Can MDA3KP14A be used for bidirectional transient protection?
No, MDA3KP14A is unidirectional only. Its part number lacks the "C" suffix (e.g., MDA3KP14CA), which denotes bidirectional construction. For bidirectional protection, MDA3KP14CA must be selected-it features symmetrical clamping for both polarities and different V(BR) and VC specifications.
What is the maximum allowable junction temperature for MDA3KP14A?
The MDA3KP14A has a maximum junction and storage temperature range of –55 °C to +150 °C. Derating of peak pulse power begins above 25 °C, following the curve in Figure 3 of the datasheet; at 100 °C ambient, the device retains approximately 65% of its 3000 W rating.
How is polarity identified on the MDA3KP14A package?
Polarity is identified by a dot marking on the top surface of the MDA3KP14A package, indicating Pin 1. Per the datasheet, odd-numbered pins (1 and 3) are cathodes, and Pin 2 is the common anode. This configuration supports dual-channel unidirectional clamping with shared anode reference.
MDA3KP14A 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 129.4A
- 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:
- -
MDA3KP14A FAQ
1.How can I place an order for MDA3KP14A through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP14A 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 MDA3KP14A reliable?
The price and inventory of MDA3KP14A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP14A is usually 5 days.
3.What payment methods are accepted for MDA3KP14A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP14A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP14A?
MDA3KP14A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP14A 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 MDA3KP14A?
For technical support, including MDA3KP14A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP14A requirements.
6.How does Aetrix verify that MDA3KP14A is sourced from the original manufacturer or authorized distributors?
All MDA3KP14A 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 MDA3KP14A meets industry standards.
7.What is the process for return or replacement of MDA3KP14A?
All MDA3KP14A units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP14A, 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 MDA3KP14A part is unused and in its original packaging.
Return procedure for MDA3KP14A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP14A Tags
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