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Microchip Technology MADA3KP20A
- Part No.:
- MADA3KP20A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MADA3KP20A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,846
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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 surge protection in power and signal lines. 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 industrial power supplies and telecom interface protection.
For engineers reviewing the MDA3KP20A datasheet, MDA3KP20A pinout, MDA3KP20A application, or MDA3KP20A equivalent, key selection criteria include clamping voltage under 10/1000 µs surge, standoff voltage margin versus system DC rail, thermal derating above 25 °C, and compliance with IEC61000-4-5 secondary lightning testing at 42 Ω, 12 Ω, and 2 Ω source impedances.
Technical Context
The MDA3KP20A is a single-channel, unidirectional TVS diode optimized for fast transient suppression in DC power rails and low-speed data lines. Its <100 ps response time enables ESD (IEC61000-4-2) and EFT (IEC61000-4-4) protection, while its 3000 W peak pulse power rating at 10/1000 µs supports robust secondary lightning immunity per IEC61000-4-5.
It uses a void-free thermosetting epoxy package rated UL94V-0, with tin-lead or matte-tin terminations solderable per MIL-STD-750 Method 2026. Polarity is defined by dot marking: Pin 1 is cathode, consistent with unidirectional TVS convention and required for correct anode-to-rail placement in clamp-to-rail configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 20 V - maximum continuous DC or peak AC voltage the device blocks without conduction; sets minimum operating rail margin. |
| V(BR) Min/Max | 22.2–24.5 V @ 1 mA - guaranteed breakdown onset range; defines turn-on threshold under surge conditions. |
| VC @ IPP | 32.4 V @ 92.6 A - maximum clamped voltage during 10/1000 µs surge; determines protected circuit's peak overvoltage stress. |
| IPP | 92.6 A - peak impulse current supported at rated clamping voltage; correlates directly to IEC61000-4-5 Class 3/4 energy levels. |
| TJ/TSTG | −55 °C to +150 °C - junction/storage temperature range; enables deployment in under-hood automotive or industrial enclosures. |
| Response Time | <100 ps - ensures sub-nanosecond turn-on for ESD events; critical for protecting CMOS inputs and USB/RS-485 transceivers. |
Pinout & Package
MDA3KP20A uses a 2-pin SMC (DO-214AB) surface-mount package with molded epoxy body (UL94V-0), 5 g typical weight, and polarity marked by a dot indicating Pin 1 (cathode). Pin 2 is anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line (e.g., VIN); clamps to ground when surge exceeds V(BR). |
| Pin 2 | Anode | Connected to system ground or return path; completes conduction path during transient event. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W Peak Pulse Power | Supports IEC61000-4-5 Class 4 surge testing at 42 Ω source impedance without failure. |
| RoHS Compliant (e3) | Meets EU Directive 2011/65/EU; matte-tin plating eliminates lead-based solder compatibility concerns. |
| MIL-PRF-19500 Screening Option | Enables high-reliability qualification for aerospace and defense programs requiring lot traceability and 3σ ID screening. |
| Moisture Sensitivity Level 1 | No dry-pack or baking required before reflow; compatible with standard J-STD-020B assembly processes. |
Applications
| Industrial Power Supply Protection | Telecom Line Interface |
|---|---|
Use Scenario: 24 V DC input rail in programmable logic controllers exposed to inductive switching noise and load dump. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between input rail and chassis ground. Use Value: Limits transient overvoltage to ≤32.4 V during 92.6 A surges, preventing damage to downstream DC-DC converters and microcontrollers. | Use Scenario: RS-485 data line termination in outdoor base station equipment subject to induced RF and lightning-induced surges. IC Role / Device Role / Timing Role: Rail-to-ground transient suppressor on differential pair common-mode path. Use Value: Clamps common-mode transients within 100 ps, preserving signal integrity and meeting IEC61000-4-5 Class 3 immunity at 12 Ω source. |
| Automotive Body Control Module | Medical Diagnostic Equipment Input |
Use Scenario: 12 V battery-fed sensor interface in vehicle door module, subjected to ISO 7637-2 pulse 1/2a/5a. IC Role / Device Role / Timing Role: Primary overvoltage protector on power input before LDO regulator. Use Value: Withstands 3000 W surges and operates up to +150 °C ambient, satisfying AEC-Q200 stress requirements for under-dash environments. | Use Scenario: Front-end analog input of portable ultrasound unit connected to external probes via shielded cables. IC Role / Device Role / Timing Role: ESD shunt on signal line referenced to isolated analog ground. Use Value: Provides IEC61000-4-2 ±15 kV contact discharge protection with sub-100 ps response, avoiding latch-up in precision ADC front-ends. |
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 PPP rating, same VWM and VC, but lower IPP (32.4 A vs. 92.6 A); SMC package identical. | Not suitable for IEC61000-4-5 Class 4; limited to Class 2/3 or ESD/EFT-only use cases. | Select SMBJ20A only when surge energy demand is ≤600 W and board space constraints favor identical footprint. |
| SMCJ20A | 1500 W PPP rating, same VWM and VC, IPP = 65.3 A; identical SMC package and pinout. | Meets IEC61000-4-5 Class 3 at 42 Ω, but fails Class 4; insufficient for full secondary lightning compliance. | Choose SMCJ20A where cost sensitivity outweighs need for full 3000 W capability and Class 4 validation. |
Compared with MDA3KP20A, SMBJ20A offers lower surge capacity in the same footprint, while SMCJ20A provides mid-tier 1500 W protection - both require design revalidation for peak pulse energy, clamping margin, and thermal derating curves.
Availability
MDA3KP20A is available at Aetrix Electronics and suitable for industrial power supply protection, telecom line interface, and automotive body control modules requiring stable component supply across extended temperature and high-surge environments.
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, industrial, and communications markets.
The MDA3KP series was developed specifically for high-energy transient suppression in mission-critical systems requiring MIL-PRF-19500 screening, wide temperature operation, and repeatable clamping performance under repetitive surge stress.
FAQ
What is the maximum clamping voltage of the MDA3KP20A under a 10/1000 µs surge?
The MDA3KP20A has a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current of 92.6 A under the standardized 10/1000 µs waveform. This value is measured per Figure 2 in the official datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. Designers must verify that downstream components tolerate this clamped level at the expected surge repetition rate.
Is the MDA3KP20A RoHS compliant?
Yes, the MDA3KP20A is RoHS compliant, indicated by the "e3" suffix in its full part marking per Microsemi's nomenclature guide. It uses annealed matte-tin plating on terminations and meets EU Directive 2011/65/EU requirements. No lead content is present, and the device is compatible with lead-free reflow profiles per IPC/JEDEC J-STD-020B Level 1 moisture classification.
Does the MDA3KP20A support MIL-PRF-19500 screening?
Yes, optional MIL-PRF-19500 screening is available for the MDA3KP20A, including wafer fabrication and assembly lot traceability, 3σ standby current (ID) screening, and conformance inspections per Micronote 129. This option is intended for aerospace, defense, and high-reliability industrial applications where process control and long-term parametric stability are mandatory.
What is the thermal derating behavior of the MDA3KP20A above 25 °C?
The MDA3KP20A follows a linear derating curve starting at 25 °C, reducing peak pulse power capability proportionally as junction temperature increases - detailed in Figure 3 of the datasheet. At +100 °C, its 3000 W rating drops to approximately 65% (~1950 W); at +150 °C, it falls to ~30% (~900 W). Designers must calculate worst-case TJ using thermal resistance and ambient conditions to ensure safe operation.
How is polarity identified on the MDA3KP20A package?
Polarity on the MDA3KP20A is marked by a dot on the top surface of the SMC package, designating Pin 1 as the cathode. Pin 2 is the anode. This matches unidirectional TVS convention: cathode connects to the line being protected (e.g., VIN), and anode connects to ground. Incorrect orientation results in forward conduction during normal operation and device failure.
MADA3KP20A 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:
- -
MADA3KP20A FAQ
1.How can I place an order for MADA3KP20A through Aetrix?
Please submit a Request for Quotation (RFQ) for MADA3KP20A 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 MADA3KP20A reliable?
The price and inventory of MADA3KP20A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MADA3KP20A is usually 5 days.
3.What payment methods are accepted for MADA3KP20A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MADA3KP20A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MADA3KP20A?
MADA3KP20A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MADA3KP20A 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 MADA3KP20A?
For technical support, including MADA3KP20A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MADA3KP20A requirements.
6.How does Aetrix verify that MADA3KP20A is sourced from the original manufacturer or authorized distributors?
All MADA3KP20A 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 MADA3KP20A meets industry standards.
7.What is the process for return or replacement of MADA3KP20A?
All MADA3KP20A units undergo pre-shipment inspection (PSI). If there is an issue with MADA3KP20A, 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 MADA3KP20A part is unused and in its original packaging.
Return procedure for MADA3KP20A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MADA3KP20A Tags
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