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Microchip Technology MXDA3KP28AE3
- Part No.:
- MXDA3KP28AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXDA3KP28AE3.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:5,039
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Product details
Overview
MXDA3KP28AE3 from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 28 V standoff voltage (VWM), 31.1–34.4 V breakdown voltage (V(BR)), and 45.4 V maximum clamping voltage (VC) at 66 A peak pulse current. It delivers lightning surge protection per IEC61000-4-5 (Class 1–4, 42 Ω source) and ESD/EFT suppression per IEC61000-4-2/4-4 in telecom power interfaces.
For engineers reviewing the MXDA3KP28AE3 datasheet, MXDA3KP28AE3 pinout, MXDA3KP28AE3 application, or MXDA3KP28AE3 equivalent, key selection criteria include its 28 V working voltage, sub-100 ps response time, RoHS-compliant e3 marking, MIL-PRF-19500 upscreening capability, and 5 g package weight for high-reliability industrial deployments.
Technical Context
This TVS array uses silicon avalanche diode technology to clamp transient overvoltages before they damage downstream circuitry. Its unidirectional polarity enables DC-biased line protection with cathode-connected pin configuration, and it operates across –55 °C to +150 °C junction temperature range.
The device sustains 3000 W peak pulse power at 10/1000 µs waveform with <5 ns clamping response for bidirectional variants and <100 ps for unidirectional types like MXDA3KP28AE3. Standby leakage remains ≤2 µA at 28 V, supporting low-power standby systems without excessive quiescent loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous operating voltage before clamping begins; matches 24 V nominal DC rails with 15% tolerance margin. |
| V(BR) min–max | 31.1–34.4 V - Breakdown occurs within this band at 1 mA test current; ensures reliable turn-on above system transients. |
| VC @ IPP | 45.4 V - Clamping voltage at 66 A peak pulse; limits stress on protected ICs during 3000 W surges. |
| IPP | 66 A - Peak impulse current supported at 10/1000 µs waveform; defines surge energy handling capacity. |
| ID @ VWM | ≤2 µA - Standby leakage at rated standoff voltage; negligible power loss in always-on protection circuits. |
| TJ/TSTG | –55 to +150 °C - Full military-grade temperature range; validated for under-hood automotive and outdoor telecom enclosures. |
Pinout & Package
MXDA3KP28AE3 uses a 3-pin SMD package (case outline per RF01243, Page 6) with void-free UL94V-0 epoxy body, tin-lead or matte-tin plating, and pin 1 identified by a dot on top. Odd-numbered pins are cathodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of Channel 1 | Connected to protected line's positive rail; clamps overvoltage to ground when reverse-biased beyond V(BR). |
| Pin 2 | Anode (Common) | Shared anode tied to system ground; enables single-point grounding for multi-line protection. |
| Pin 3 | Cathode of Channel 2 | Second protected line cathode; allows dual-rail or differential signal protection in compact layout. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse rating | Enables robust secondary lightning protection per IEC61000-4-5 Class 1–4 with 42 Ω source impedance. |
| Sub-100 ps response time | Clamps ESD events before sensitive logic or analog inputs are damaged, meeting IEC61000-4-2 Level 4. |
| MIL-PRF-19500 screening option | Supports high-reliability aerospace and defense programs requiring wafer lot traceability and 3σ ID screening. |
| RoHS-compliant e3 marking | Meets EU Directive 2011/65/EU with lead-free finish; compatible with standard reflow profiles (260 °C, 10 s). |
Applications
| Telecom Power Feeds | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Protection of 24 V DC power inputs in DSLAMs, base station remote radios, and fiber access nodes exposed to induced lightning surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between input connector and DC-DC converter input stage. Use Value: Limits transient voltage to ≤45.4 V during 66 A surges, preventing latch-up or gate oxide rupture in upstream regulators. | Use Scenario: Safeguarding digital input channels in programmable logic controllers subjected to relay coil flyback and motor drive coupling. IC Role / Device Role / Timing Role: Unidirectional TVS shunting inductive kickback from 24 V sensor lines to common ground. Use Value: Absorbs 3000 W energy within 10/1000 µs, eliminating need for external snubbers and reducing PCB footprint. |
| Automotive Body Control Units | Medical Diagnostic Equipment Interfaces |
Use Scenario: Protecting LIN bus power rails and window lift control circuits against battery dump and load dump transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V/24 V supply lines upstream of LDOs and microcontrollers. Use Value: Withstands –55 °C to +150 °C operation and maintains ≤2 µA leakage, ensuring reliability in engine bay environments. | Use Scenario: Shielding isolated USB and RS-232 ports in ultrasound and MRI control panels from ESD during clinical handling. IC Role / Device Role / Timing Role: Fast-response clamping element on data line power rails to prevent ESD-induced firmware resets. Use Value: Sub-100 ps turn-on prevents >1 kV HBM ESD pulses from propagating into isolation barriers or 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 |
|---|---|---|---|
| SMAJ28A | 600 W rating (vs. 3000 W); 43.3 V VC @ 38.9 A; DO-214AC package | Limited to lower-energy surges; unsuitable for IEC61000-4-5 Class 3+ or lightning-prone locations | Select SMAJ28A only for cost-sensitive consumer electronics with basic ESD/EFT needs. |
| SMCJ28A | 1500 W rating (vs. 3000 W); 45.4 V VC @ 33.7 A; larger SMC package | Half the surge energy capacity; requires derating above 75 °C ambient | Choose SMCJ28A where board space permits larger footprint but full 3000 W is not required. |
Compared with SMAJ28A and SMCJ28A, MXDA3KP28AE3 delivers double the surge energy handling of SMCJ28A and five times that of SMAJ28A while maintaining identical clamping voltage - enabling fewer devices per rail and higher system-level surge immunity without redesigning thermal layout.
Availability
MXDA3KP28AE3 is available at Aetrix Electronics and suitable for telecom power feeds, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended product lifecycles.
Supply support for MXDA3KP28AE3 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, communications, and industrial markets.
The MDA3KP series was developed specifically for high-energy transient suppression in mission-critical infrastructure, emphasizing MIL-PRF-19500 compliance, wide temperature operation, and repeatable clamping performance under repetitive surge stress.
FAQ
What is the clamping voltage of MXDA3KP28AE3 at its rated peak pulse current?
The MXDA3KP28AE3 has a maximum clamping voltage (VC) of 45.4 V at 66 A peak pulse current (IPP) under 10/1000 µs waveform conditions. This value is measured per standard test methods defined in the RF01243 datasheet and ensures protected downstream components experience no more than 45.4 V during worst-case surge events. The MXDA3KP28AE3 maintains this clamping performance across its full operating temperature range.
Is MXDA3KP28AE3 RoHS compliant and what does the 'e3' suffix indicate?
Yes, MXDA3KP28AE3 is RoHS compliant, as confirmed by the 'e3' suffix in its part number per Microsemi's nomenclature guide (RF01243, Page 2). The 'e3' designation specifies annealed matte-tin plating and full compliance with EU Directive 2011/65/EU. This makes MXDA3KP28AE3 suitable for lead-free assembly processes with peak reflow temperatures up to 260 °C for 10 seconds.
Can MXDA3KP28AE3 be used for bidirectional transient protection?
No, MXDA3KP28AE3 is a unidirectional TVS device, as indicated by the absence of 'C' in its part number. Bidirectional variants (e.g., MXDA3KP28CE3) exist in the same family but feature symmetrical clamping for AC-coupled or floating signal lines. Using MXDA3KP28AE3 on bidirectional paths may result in forward conduction during negative transients, so correct polarity alignment is essential.
What is the standoff voltage rating and why is it critical for MXDA3KP28AE3 selection?
The MXDA3KP28AE3 has a rated working standoff voltage (VWM) of 28 V, meaning it remains non-conductive below this DC or peak AC voltage. This rating must exceed the maximum normal operating voltage of the protected line - for example, 24 V ±15% systems - to avoid leakage or thermal runaway. Selecting a VWM too close to operating voltage risks premature clamping and increased standby current.
Does MXDA3KP28AE3 support MIL-PRF-19500 high-reliability screening?
Yes, MXDA3KP28AE3 supports optional MIL-PRF-19500 upscreening per Micronote 129, including wafer lot traceability, 3σ screening on standby current (ID), and conformance inspections. This capability is documented in the RF01243 datasheet and makes MXDA3KP28AE3 suitable for aerospace, defense, and other high-integrity applications where long-term reliability and failure mode predictability are mandatory.
MXDA3KP28AE3 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:
- -
MXDA3KP28AE3 FAQ
1.How can I place an order for MXDA3KP28AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MXDA3KP28AE3 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 MXDA3KP28AE3 reliable?
The price and inventory of MXDA3KP28AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXDA3KP28AE3 is usually 5 days.
3.What payment methods are accepted for MXDA3KP28AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXDA3KP28AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXDA3KP28AE3?
MXDA3KP28AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXDA3KP28AE3 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 MXDA3KP28AE3?
For technical support, including MXDA3KP28AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXDA3KP28AE3 requirements.
6.How does Aetrix verify that MXDA3KP28AE3 is sourced from the original manufacturer or authorized distributors?
All MXDA3KP28AE3 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 MXDA3KP28AE3 meets industry standards.
7.What is the process for return or replacement of MXDA3KP28AE3?
All MXDA3KP28AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MXDA3KP28AE3, 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 MXDA3KP28AE3 part is unused and in its original packaging.
Return procedure for MXDA3KP28AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXDA3KP28AE3 Tags
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