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Microchip Technology MADA3KP28A
- Part No.:
- MADA3KP28A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MADA3KP28A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:8,726
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Product details
Overview
MDA3KP28A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array designed for high-reliability overvoltage protection in power rails and signal lines. It features a 28 V reverse standoff voltage (VWM), 31.1–34.4 V breakdown voltage (V(BR)), 45.4 V maximum clamping voltage at 66 A peak pulse current, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the MDA3KP28A datasheet, MDA3KP28A pinout, MDA3KP28A application, or MDA3KP28A equivalent, key selection criteria include IEC61000-4-5 secondary lightning protection capability (Class 1–4 with 42 Ω source), ESD/EFT immunity per IEC61000-4-2/4-4, 100 ps response time, RoHS-compliant e3 marking, and MIL-PRF-19500 upscreening eligibility.
Technical Context
The MDA3KP28A is a single-channel, unidirectional TVS diode optimized for fast clamping of high-energy transients in DC power distribution networks and industrial control interfaces. Its 10/1000 µs surge rating of 3000 W and sub-100 ps response enable suppression of lightning-induced surges, inductive switching spikes, and electrostatic discharge events before downstream ICs are damaged.
It operates with a defined polarity (Pin 1 = cathode), requires no dry pack per IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, and supports traceable lot-level reliability screening including 3σ standby current (ID) testing and full surge validation per production lot.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous operating voltage without leakage activation; sets minimum system rail margin for safe placement. |
| V(BR) min/max | 31.1–34.4 V - Breakdown occurs within this range at 1 mA; defines turn-on threshold tolerance band for design margining. |
| VC @ IPP | 45.4 V at 66 A - Clamped voltage during worst-case 10/1000 µs surge; determines maximum stress on protected load. |
| PPP | 3000 W - Peak pulse power handling at 10/1000 µs waveform; enables robust Class 4 lightning protection per IEC61000-4-5. |
| TJ range | –55 °C to +150 °C - Full industrial/military temperature operation; supports under-hood, avionics, and power-conversion environments. |
| ID @ VWM | ≤2 µA - Ultra-low leakage at rated standoff; avoids unnecessary power drain in battery-backed or low-quiescent systems. |
| Response time | <100 ps - Near-instantaneous avalanche conduction; prevents nanosecond-scale ESD damage to sensitive inputs. |
Pinout & Package
MDA3KP28A uses a 2-pin DO-214AB (SMC) package with void-free UL94V-0 epoxy body, matte-tin terminations, and polarity marked by a dot indicating Pin 1 (cathode). Weight ≈5 g; moisture sensitivity level = 1 (no bake required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts surge current to ground when voltage exceeds V(BR); must be routed with low-inductance path. |
| Pin 2 | Anode | Connected to system ground or return path; completes clamping loop; requires low-impedance grounding for effective energy diversion. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W 10/1000 µs surge rating | Enables compliance with IEC61000-4-5 Class 4 (42 Ω source) for secondary lightning protection in telecom and industrial power supplies. |
| RoHS-compliant e3 marking | Meets global environmental regulations without lead exemption; supports green manufacturing and export compliance. |
| MIL-PRF-19500 upscreening option | Allows qualification for high-reliability applications including aerospace, defense, and critical infrastructure via wafer/assembly lot traceability. |
| Level 1 moisture sensitivity | Eliminates pre-bake requirement before reflow; reduces assembly cost and process complexity in high-volume SMT lines. |
| Sub-100 ps response time | Clamps ESD events faster than most interface ICs can respond, preventing latch-up or gate oxide rupture in microcontrollers and FPGAs. |
Applications
| Industrial Motor Drives | Telecom Power Feeds |
|---|---|
Use Scenario: Protection of 24 V DC input rails in variable-frequency drives against inductive kickback and grid-coupled surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and gate drivers. Use Value: Limits transient voltage to ≤45.4 V during 66 A surges, preserving MOSFET gate integrity and preventing controller reset. | Use Scenario: Surge protection on -48 V telecom power feeds exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected between feed rail and chassis ground to shunt differential-mode surges. Use Value: Withstands 3000 W pulses per IEC61000-4-5 (42 Ω source), meeting GR-1089-CORE Class 4 requirements. |
| Automotive Body Control Modules | Medical Imaging Power Supplies |
Use Scenario: Input protection for 12 V/24 V BCMs subjected to load-dump and ISO 7637-2 Pulse 5a transients. IC Role / Device Role / Timing Role: First-line transient suppressor on main power entry, sized for >60 A peak current capability. Use Value: Clamps to 45.4 V within 100 ps, preventing brownout or latch-up in CAN transceivers and microcontrollers. | Use Scenario: Protection of high-voltage DC rails in CT/MRI power conditioning stages against switching noise and EFT bursts. IC Role / Device Role / Timing Role: Secondary surge limiter after primary MOV stage, providing precise clamping and low leakage. Use Value: ≤2 µA standby current avoids drift in precision analog front-ends; 150 °C max TJ supports sealed enclosure thermal profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ28A | Same DO-214AC (SMA) package; 28 V VWM; 45.7 V VC @ 64.9 A; lower PPP (400 W). | Rated for IEC61000-4-5 Class 2 only; insufficient for Class 4 lightning protection. | Select MDA3KP28A when 3000 W surge handling and MIL-PRF-19500 screening are required. |
| Vishay SM8S28A | DO-218AB package; 28 V VWM; 45.4 V VC @ 66.1 A; same PPP (3000 W); higher ID (5 µA vs. 2 µA). | Higher leakage may affect ultra-low-power sensor nodes; lacks MIL-PRF-19500 upscreening path. | Choose MDA3KP28A for high-reliability programs requiring lot traceability and extended temperature validation. |
Compared with SMAJ28A and SM8S28A, the MDA3KP28A delivers identical clamping performance but adds military-grade screening eligibility, lower standby leakage, and verified Class 4 lightning compliance-critical for aerospace, defense, and industrial control OEMs.
Availability
MDA3KP28A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, and automotive body control modules requiring stable component supply, long-term lifecycle support, and consistent surge performance across production batches.
Supply support for MDA3KP28A 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 to deliver MIL-qualified transient suppression in compact surface-mount packages for mission-critical power and signal line protection where failure is not an option.
FAQ
What is the clamping voltage of MDA3KP28A at its rated peak pulse current?
The MDA3KP28A has a maximum clamping voltage (VC) of 45.4 V at its rated peak pulse current (IPP) of 66 A under 10/1000 µs waveform conditions. This value is guaranteed across temperature and ensures protected circuitry sees no more than 45.4 V during worst-case surge events. The MDA3KP28A achieves this while maintaining tight V(BR) tolerance (31.1–34.4 V) and low leakage (≤2 µA).
Is MDA3KP28A suitable for IEC61000-4-5 Class 4 secondary lightning protection?
Yes, the MDA3KP28A is validated for IEC61000-4-5 Class 4 secondary lightning protection when tested with a 42 Ω source impedance. Its 3000 W peak pulse power rating and 45.4 V clamping voltage meet the energy and voltage limits required for this class. The MDA3KP28A's specification sheet explicitly lists MDA3KP6.0A through MDA3KP40A as compliant for Class 1–4 under 42 Ω conditions.
Does MDA3KP28A require moisture-sensitive device (MSD) baking before reflow soldering?
No, the MDA3KP28A is rated at IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1, meaning it has unlimited floor life and does not require baking prior to reflow. This simplifies SMT assembly and eliminates risk of popcorning or delamination. The MDA3KP28A's thermosetting epoxy body and Level 1 classification are confirmed in the official Microsemi datasheet RF01243 Rev B.
What is the polarity configuration of MDA3KP28A and how is it marked?
The MDA3KP28A is a unidirectional TVS diode with Pin 1 designated as the cathode. Polarity is indicated by a dot on the top surface of the DO-214AB package adjacent to Pin 1. This marking aligns with industry-standard SMC layout and ensures correct orientation during automated placement. The MDA3KP28A's polarity is fixed and non-reversible-reverse connection would prevent proper clamping operation.
Can MDA3KP28A be used in automotive applications subject to ISO 7637-2 load dump?
Yes, the MDA3KP28A is suitable for ISO 7637-2 Pulse 5a (load dump) protection in 12 V and 24 V automotive systems. Its 28 V VWM provides appropriate margin above nominal rail voltages, and its 45.4 V clamping voltage falls within typical load-dump clamp targets. The MDA3KP28A's –55 °C to +150 °C operating range and high-reliability construction make it appropriate for under-hood BCM and ADAS power module designs.
MADA3KP28A 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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 66A
- 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:
- -
MADA3KP28A FAQ
1.How can I place an order for MADA3KP28A through Aetrix?
Please submit a Request for Quotation (RFQ) for MADA3KP28A 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 MADA3KP28A reliable?
The price and inventory of MADA3KP28A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MADA3KP28A is usually 5 days.
3.What payment methods are accepted for MADA3KP28A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MADA3KP28A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MADA3KP28A?
MADA3KP28A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MADA3KP28A 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 MADA3KP28A?
For technical support, including MADA3KP28A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MADA3KP28A requirements.
6.How does Aetrix verify that MADA3KP28A is sourced from the original manufacturer or authorized distributors?
All MADA3KP28A 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 MADA3KP28A meets industry standards.
7.What is the process for return or replacement of MADA3KP28A?
All MADA3KP28A units undergo pre-shipment inspection (PSI). If there is an issue with MADA3KP28A, 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 MADA3KP28A part is unused and in its original packaging.
Return procedure for MADA3KP28A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MADA3KP28A Tags
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