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Microchip Technology MDA3KP20A
- Part No.:
- MDA3KP20A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP20A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,183
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Product details
Overview
MDA3KP20A 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 20 V standoff voltage (VWM), 22.2–24.5 V breakdown range (V(BR)), 32.4 V maximum clamping voltage at 92.6 A peak pulse current, and operates from −55 °C to +150 °C. Used in AC/DC front-end surge protection circuits.
For engineers reviewing the MDA3KP20A datasheet, MDA3KP20A pinout, MDA3KP20A application, or MDA3KP20A equivalent, key selection criteria include clamping voltage vs. IPP, temperature derating behavior per Figure 3, standoff-to-breakdown margin, RoHS-compliant e3 marking, and MIL-PRF-19500 upscreening eligibility.
Technical Context
The MDA3KP20A employs silicon avalanche diode technology in a void-free thermosetting epoxy package with tin-lead or matte-tin plating. Its <100 ps response time enables effective suppression of ESD (IEC61000-4-2), EFT (IEC61000-4-4), and secondary lightning transients (IEC61000-4-5) at 10/1000 µs waveform.
It is rated for 3000 W peak pulse power under 0.05% duty cycle, with clamping performance validated at 92.6 A IPP and 32.4 V VC. Polarity follows odd-pin cathode convention, and moisture sensitivity is Level 1 per J-STD-020B-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous DC or peak AC voltage applied without triggering conduction |
| V(BR) min/max | 22.2–24.5 V @ 1 mA - Ensures reliable turn-on above operating voltage with ≥11% margin over VWM |
| VC @ IPP | 32.4 V @ 92.6 A - Limits downstream voltage stress during 10/1000 µs surge events |
| IPP | 92.6 A - Peak current survivable at rated clamping voltage; defines minimum PCB trace robustness |
| TJ/TSTG | −55 to +150 °C - Supports operation in harsh industrial and aerospace environments |
| Moisture Sensitivity | Level 1 per J-STD-020B - Enables standard reflow without baking or dry pack handling |
Pinout & Package
MDA3KP20A uses a 3-pin SMC (DO-214AB) surface-mount package with dimensions 21.03 × 6.86 × 8.64 mm (L × W × H). Pin 1 is marked by a dot on the top surface and is the cathode terminal; pins 2 and 3 are anode and common cathode respectively per array configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts surge current to ground when VBR exceeded |
| Pin 2 | Anode | Common return path for TVS array; ties to system ground plane |
| Pin 3 | Cathode (Array) | Second cathode terminal enabling dual-line or differential protection topology |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse rating | Supports IEC61000-4-5 Class 3/4 secondary lightning protection with 12 Ω or 42 Ω source impedance |
| Unidirectional construction | Enables DC-biased protection without reverse leakage concerns in power rail applications |
| MIL-PRF-19500 upscreening option | Allows qualification for high-reliability aerospace and defense systems requiring lot traceability and 3σ ID screening |
| e3 RoHS compliance | Meets lead-free assembly requirements while maintaining solderability via annealed matte-tin plating |
Applications
| Industrial AC/DC Power Input | Telecom Line Interface |
|---|---|
Use Scenario: Protection of rectifier bridges and PFC controllers against induced surges on 230 VAC mains inputs. IC Role / Device Role / Timing Role: Primary shunt TVS device clamping transient energy before it reaches downstream ICs. Use Value: Clamps to 32.4 V during 92.6 A surge, limiting stress on 36 V-rated bridge rectifiers and ensuring >11% VBR–VWM margin. | Use Scenario: Surge suppression on T1/E1 line driver outputs exposed to lightning-induced coupling. IC Role / Device Role / Timing Role: Unidirectional TVS placed between line driver output and transformer primary. Use Value: Sub-100 ps response prevents latch-up in line drivers; 20 V VWM matches typical ±12 V bias rails. |
| Motor Drive Control Board | Rail-to-Rail Sensor Signal Conditioning |
Use Scenario: Protection of gate drivers and current-sense amplifiers from inductive switching spikes in BLDC inverters. IC Role / Device Role / Timing Role: TVS array placed across DC bus and control signal lines to absorb commutation transients. Use Value: 3000 W rating handles repetitive 10/1000 µs spikes from 1 kW motor switching; −55 °C to +150 °C rating supports under-hood deployment. | Use Scenario: Guarding precision analog inputs (e.g., RTD, strain gauge) against ESD in factory automation modules. IC Role / Device Role / Timing Role: Low-leakage TVS placed at connector entry point ahead of instrumentation amplifier input stage. Use Value: 2 µA max standby current at 20 V avoids gain error in 10 MΩ input impedance stages; 32.4 V clamping protects 36 V op-amp rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | 600 W rating, 32.4 V clamping at 18.5 A IPP, DO-214AA package (smaller footprint) | Lower energy handling; suitable only for ESD/EFT, not secondary lightning | Select SMBJ20A only when surge threat level is limited to IEC61000-4-2/4-4 and board space is constrained. |
| SMCJ20A | 1500 W rating, 32.4 V clamping at 46.3 A IPP, same DO-214AB package as MDA3KP20A | Half the peak power capability; insufficient for Class 4 IEC61000-4-5 with 42 Ω source | Use SMCJ20A where cost is prioritized over full 3000 W compliance and thermal margin is adequate. |
Compared with SMBJ20A and SMCJ20A, the MDA3KP20A delivers double the peak pulse power of SMCJ20A and five times that of SMBJ20A within the same package outline-enabling single-device compliance with IEC61000-4-5 Class 4 at 42 Ω without parallel devices or layout changes.
Availability
MDA3KP20A is available at Aetrix Electronics and suitable for industrial AC/DC power input protection, telecom line interface hardening, and motor drive control board surge mitigation requiring stable component supply across extended production lifecycles.
Supply support for MDA3KP20A 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The MDA series was developed specifically for mission-critical transient suppression where MIL-PRF-19500 screening, wafer-level traceability, and guaranteed 3000 W 10/1000 µs performance are mandatory.
FAQ
What is the clamping voltage of MDA3KP20A at its rated peak pulse current?
The MDA3KP20A has a maximum clamping voltage (VC) of 32.4 V at its rated peak pulse current (IPP) of 92.6 A under 10/1000 µs waveform conditions. This value is measured per Figure 2 in the RF01243 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MDA3KP20A maintains this clamping performance across its full operating temperature range.
Is MDA3KP20A RoHS compliant and what does the 'e3' marking indicate?
Yes, MDA3KP20A is RoHS compliant, indicated by the 'e3' suffix in its full marking per page 2 of RF01243. The 'e3' designation confirms lead-free matte-tin plating meeting JEDEC J-STD-020B Level 1 moisture sensitivity-eliminating dry pack requirements and supporting standard Pb-free reflow profiles. This compliance applies to the entire MDA3KP20A production lot, not just sample units.
Can MDA3KP20A be used for bidirectional transient protection?
No, MDA3KP20A is unidirectional only. Its part number lacks the 'C' suffix (e.g., MDA3KP20CA) specified on page 2 for bidirectional variants. The device conducts only during positive transients relative to its cathode terminals and must be oriented with Pin 1 toward the protected line. For AC or differential signal protection, the bidirectional MDA3KP20CA is required instead of MDA3KP20A.
What is the standoff-to-breakdown voltage margin for MDA3KP20A?
The MDA3KP20A has a rated standoff voltage (VWM) of 20 V and a minimum breakdown voltage (VBR) of 22.2 V, yielding a 11% margin. This margin ensures reliable non-conduction during normal operation while guaranteeing turn-on before downstream components reach their absolute maximum ratings. The margin complies with IEC61000-4-5 design guidelines requiring VBR ≥ 1.1 × VWM for robust surge immunity.
Does MDA3KP20A require special handling for moisture sensitivity?
No, MDA3KP20A has IPC/JEDEC J-STD-020B moisture sensitivity level (MSL) 1, meaning it may be stored indefinitely at ≤30 °C/60% RH and subjected to standard reflow profiles without baking or dry pack. This eliminates moisture-related popcorning risk during assembly and reduces manufacturing overhead compared to MSL 3+ devices. The MDA3KP20A's void-free epoxy body contributes to this robust moisture resistance.
MDA3KP20A 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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 92.6A
- 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:
- -
MDA3KP20A FAQ
1.How can I place an order for MDA3KP20A through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP20A 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 MDA3KP20A reliable?
The price and inventory of MDA3KP20A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP20A is usually 5 days.
3.What payment methods are accepted for MDA3KP20A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP20A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP20A?
MDA3KP20A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP20A 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 MDA3KP20A?
For technical support, including MDA3KP20A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP20A requirements.
6.How does Aetrix verify that MDA3KP20A is sourced from the original manufacturer or authorized distributors?
All MDA3KP20A 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 MDA3KP20A meets industry standards.
7.What is the process for return or replacement of MDA3KP20A?
All MDA3KP20A units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP20A, 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 MDA3KP20A part is unused and in its original packaging.
Return procedure for MDA3KP20A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP20A Tags
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