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Microchip Technology MDA3KP24A
- Part No.:
- MDA3KP24A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP24A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,770
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Product details
Overview
MDA3KP24A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 24 V standoff voltage (VWM), 26.7–29.5 V breakdown voltage (V(BR)), and 38.9 V maximum clamping voltage (VC) at 77.2 A peak pulse current (IPP). It delivers secondary lightning protection per IEC61000-4-5 (42 Ω, Class 1–4) and ESD/EFT suppression per IEC61000-4-2/4-4 in telecom power interfaces.
For engineers reviewing the MDA3KP24A datasheet, MDA3KP24A pinout, MDA3KP24A application, or MDA3KP24A equivalent, key selection criteria include its 24 V VWM rating, 38.9 V VC at 77.2 A IPP, unidirectional polarity, RoHS-compliant e3 marking, and MIL-PRF-19500 upscreening capability for high-reliability aerospace and defense systems.
Technical Context
The MDA3KP24A operates as a silicon avalanche diode-based TVS, leveraging fast-clamping response (<100 ps rise time) to divert surge energy away from sensitive downstream circuitry. Its unidirectional construction enables DC-biased protection paths without reverse leakage concerns above VWM.
Designed for 10/1000 µs waveform compliance, it sustains 3000 W peak pulse power with full surge testing per lot and 3σ screening on standby current (ID ≤ 2 µA at 24 V). Thermal derating begins above 25 °C per Figure 3, maintaining reliability across –55 to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous DC or peak AC operating voltage before clamping initiates |
| V(BR) min/max | 26.7–29.5 V @ 1 mA - Ensures reliable avalanche conduction onset within defined tolerance band |
| VC @ IPP | 38.9 V @ 77.2 A - Clamping voltage limits downstream component stress during 10/1000 µs transients |
| PPP | 3000 W @ 10/1000 µs - Peak surge handling capacity validated per IEC61000-4-5 with 42 Ω source impedance |
| ID @ VWM | ≤2 µA - Ultra-low leakage preserves efficiency in battery-backed or low-power monitoring circuits |
| TJ/TSTG | –55 to +150 °C - Enables deployment in extended-temperature industrial and avionics environments |
Pinout & Package
MDA3KP24A uses a 3-pin surface-mount package (case outline per Page 6 of RF01243 Rev B): void-free UL94V-0 epoxy body, tin-lead or matte-tin plating, ~5 g weight, and pin 1 identified by dot marking. Odd-numbered pins are cathodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts surge current to ground when VWM exceeded |
| Pin 2 | Anode | Common anode node tied to system ground reference for unidirectional clamping path |
| Pin 3 | Cathode | Second protected line cathode - supports dual-line or differential bus protection |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Validated clamping performance under IEC61000-4-5 42 Ω Class 4 surges without degradation |
| Unidirectional polarity | Enables DC-coupled protection without reverse conduction in powered signal lines |
| MIL-PRF-19500 upscreening option | Supports high-reliability qualification for aerospace and military programs requiring lot traceability |
| Moisture sensitivity Level 1 | No dry pack or baking required prior to reflow, simplifying SMT assembly logistics |
Applications
| Telecom Power Feeds | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Protection of 24 V DC power inputs in outdoor base station remote radio units exposed to induced lightning surges. IC Role / Device Role / Timing Role: Transient voltage suppressor providing primary overvoltage clamping at input stage. Use Value: Limits transient voltage to ≤38.9 V during 77.2 A surges, preventing damage to upstream DC-DC converters and PMICs. | Use Scenario: Guarding analog input channels against switching transients from solenoid drivers in factory automation controllers. IC Role / Device Role / Timing Role: Fast-response TVS shunting inductive kickback energy before it reaches ADC front-end protection networks. Use Value: Sub-100 ps response ensures clamping occurs before transient propagates into precision signal conditioning stages. |
| Avionics Data Bus Interfaces | Renewable Energy Inverter Control Boards |
Use Scenario: Secondary surge protection on ARINC 429 or MIL-STD-1553 bus power rails in flight control computers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between isolated DC supply and bus transceiver IC power pins. Use Value: Withstands repeated 3000 W surges while maintaining <2 µA leakage, preserving signal integrity and power budget. | Use Scenario: Input-stage protection for microcontroller-based solar charge controllers subjected to grid-switching transients. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing line-to-ground surges on PV input terminals before entering MPPT circuitry. Use Value: 24 V VWM matches nominal PV string voltage; 38.9 V VC prevents latch-up in 3.3 V/5 V logic supplies downstream. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | 600 W PPP rating, same VWM and VC but lower IPP (32.4 A), DO-214AA package | Lower surge margin; suitable only for non-lightning environments or Class 1–2 IEC61000-4-5 | Select SMBJ24A only if system-level surge testing confirms 600 W sufficiency and board space constraints favor smaller footprint. |
| SMCJ24A | 1500 W PPP, same VWM/VC, DO-214AB package, higher thermal mass than MDA3KP24A | Lacks MIL-PRF-19500 upscreening path and fails Class 4 lightning validation per 42 Ω source | Choose SMCJ24A for cost-sensitive industrial designs where 1500 W meets requirement and high-reliability screening is unnecessary. |
Compared with SMBJ24A and SMCJ24A, the MDA3KP24A provides double the surge power handling of SMCJ24A and five times that of SMBJ24A, enabling single-device Class 4 lightning compliance without parallel staging - critical for compact, high-integrity power interface designs.
Availability
MDA3KP24A is available at Aetrix Electronics and suitable for telecom power feeds, industrial PLC I/O modules, avionics data bus interfaces, and renewable energy inverter control boards requiring stable component supply and long-term lifecycle support.
Supply support for MDA3KP24A 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 ICs, RF solutions, and radiation-hardened components.
The MDA series was developed specifically for mission-critical surge protection in aerospace, defense, and industrial infrastructure where MIL-PRF-19500 compliance and verified 3000 W transient immunity are mandatory design requirements.
FAQ
What is the clamping voltage of the MDA3KP24A at its rated peak pulse current?
The MDA3KP24A exhibits a maximum clamping voltage (VC) of 38.9 V at its rated peak pulse current (IPP) of 77.2 A under 10/1000 µs waveform conditions. This value is guaranteed per datasheet Figure 2 and ensures downstream circuitry remains below safe voltage thresholds during standardized surge events.
Is the MDA3KP24A suitable for bidirectional signal line protection?
No - the MDA3KP24A is unidirectional, as indicated by the absence of "C" suffix in its part number. For bidirectional protection (e.g., AC-coupled data lines), the MDA3KP24CA variant must be used. Using MDA3KP24A on bidirectional signals risks forward conduction during negative transients.
Does the MDA3KP24A require moisture sensitivity handling before reflow soldering?
No - the MDA3KP24A carries IPC/JEDEC J-STD-020B moisture sensitivity Level 1 classification, meaning it has unlimited floor life and requires no dry packing or baking prior to reflow. This simplifies manufacturing flow and reduces assembly risk.
Can the MDA3KP24A be used for IEC61000-4-5 Class 4 lightning protection?
Yes - the MDA3KP24A is explicitly validated for IEC61000-4-5 Class 4 secondary lightning protection with 42 Ω source impedance, as confirmed in the Applications/Benefits section of RF01243 Rev B. Its 3000 W PPP rating meets the 4 kV test level requirement.
What does the "e3" marking on the MDA3KP24A package indicate?
Per Microsemi's nomenclature guide on Page 2 of RF01243 Rev B, the "e3" marking on the MDA3KP24A indicates RoHS compliance with lead-free matte-tin terminal plating. This satisfies EU Directive 2011/65/EU and supports environmentally compliant manufacturing without compromising solderability.
MDA3KP24A 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 77.2A
- 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:
- -
MDA3KP24A FAQ
1.How can I place an order for MDA3KP24A through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP24A 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 MDA3KP24A reliable?
The price and inventory of MDA3KP24A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP24A is usually 5 days.
3.What payment methods are accepted for MDA3KP24A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP24A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP24A?
MDA3KP24A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP24A 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 MDA3KP24A?
For technical support, including MDA3KP24A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP24A requirements.
6.How does Aetrix verify that MDA3KP24A is sourced from the original manufacturer or authorized distributors?
All MDA3KP24A 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 MDA3KP24A meets industry standards.
7.What is the process for return or replacement of MDA3KP24A?
All MDA3KP24A units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP24A, 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 MDA3KP24A part is unused and in its original packaging.
Return procedure for MDA3KP24A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP24A Tags
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