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Microchip Technology MXDA3KP28A
- Part No.:
- MXDA3KP28A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXDA3KP28A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:8,557
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Product details
Overview
MXDA3KP28A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array designed for high-reliability secondary lightning and ESD protection in power supply inputs, telecom interfaces, and industrial control I/O. It features a 28 V standoff voltage (VWM), 31.1–34.4 V breakdown range (V(BR)), 45.4 V clamping voltage at 66 A peak pulse current, and operates from –55 °C to +150 °C.
For engineers reviewing the MXDA3KP28A datasheet, MXDA3KP28A pinout, MXDA3KP28A application, or MXDA3KP28A equivalent, key selection criteria include its 28 V working voltage, 45.4 V max clamping at 66 A, 1000 µs pulse capability, RoHS-compliant void-free epoxy package, and MIL-PRF-19500 upscreening eligibility.
Technical Context
The MXDA3KP28A is a single-channel unidirectional TVS diode optimized for fast transient suppression with <100 ps response time and 3000 W peak pulse power rating under 10/1000 µs waveform. It meets IEC61000-4-2 (ESD), IEC61000-4-4 (EFT), and IEC61000-4-5 (secondary lightning) with 42 Ω, 12 Ω, and 2 Ω source impedances across Class 1–4 levels.
Its electrical behavior is defined by strict VWM = 28 V, V(BR) min = 31.1 V at I(BR) = 1 mA, VC = 45.4 V at IPP = 66 A, ID ≤ 2 µA at VWM, and thermal operation up to +150 °C junction temperature - all verified per Microsemi RF01243 Rev B test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - maximum continuous reverse operating voltage before conduction begins |
| V(BR) min/max | 31.1–34.4 V @ 1 mA - ensures reliable turn-on above system peak voltage with margin |
| VC @ IPP | 45.4 V @ 66 A - limits downstream voltage stress during worst-case 10/1000 µs surge |
| IPP | 66 A - peak surge current survivable without degradation under standard test waveform |
| ID @ VWM | ≤2 µA - negligible leakage at rated standoff, critical for low-power sensor or battery-backed circuits |
| PPP | 3000 W @ 10/1000 µs - defines energy-handling capacity for lightning and switching transients |
| TJ/TSTG | –55 °C to +150 °C - supports deployment in extended-temperature industrial and aerospace environments |
Pinout & Package
MXDA3KP28A uses a 2-pin DO-214AB (SMC) surface-mount package with void-free UL94V-0 epoxy body, matte-tin-plated terminals, and polarity marked by a dot indicating Pin 1 as cathode. Weight ≈5 g; moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts surge current to ground when voltage exceeds V(BR) |
| Pin 2 | Anode | Typically tied to system ground reference; completes conduction path during transient event |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Enables robust protection against IEC61000-4-5 secondary lightning surges with 42 Ω source impedance |
| 45.4 V clamping at 66 A | Keeps downstream ICs within safe absolute maximum ratings during 10/1000 µs transients |
| Response time <100 ps | Provides effective suppression of ESD events per IEC61000-4-2 ±8 kV contact discharge |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring lot traceability, 3σ ID screening, and wafer-level controls |
| RoHS-compliant e3 marking | Meets global environmental compliance requirements without lead-free assembly complications |
Applications
| Industrial PLC I/O Protection | Telecom Line Interface |
|---|---|
Use Scenario: 24 V DC input channels on programmable logic controllers exposed to inductive kickback and field wiring surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground to shunt transients before reaching input buffer. Use Value: Limits voltage to ≤45.4 V during 66 A surges, preventing damage to 3.3 V/5 V logic-level interface ICs downstream. | Use Scenario: T1/E1 data lines in base station equipment subject to induced RF and lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on each differential pair leg to clamp mode-specific overvoltage while preserving signal integrity. Use Value: 28 V VWM matches typical telecom bias rails; 3000 W rating handles repeated 10/1000 µs surges without parametric shift. |
| AC/DC Power Supply Input | Automotive Body Control Module |
Use Scenario: Primary-side rectifier output in offline SMPS where MOVs lack precision and speed for fast transients. IC Role / Device Role / Timing Role: Fast-response TVS placed after bridge rectifier to clamp line-to-ground surges before bulk capacitor. Use Value: Sub-100 ps response captures early transient edge; 45.4 V clamping protects 50 V-rated electrolytic capacitors and MOSFETs. | Use Scenario: 12 V battery-supplied microcontroller inputs connected to external switches or sensors in harsh vehicle environments. IC Role / Device Role / Timing Role: Point-of-load TVS on LIN bus or discrete I/O pins to absorb load dump and ISO 7637-2 pulses. Use Value: 28 V VWM accommodates 12 V system peaks including alternator overshoot; 150 °C rating survives under-hood thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28A | 600 W PPP rating, 43.3 V VC @ 13.9 A IPP, same DO-214AA package | Limited to lower-energy transients; insufficient for IEC61000-4-5 Class 3/4 with 42 Ω source | Select SMBJ28A only for cost-sensitive designs where surge energy does not exceed 600 W |
| 1.5KE28A | Through-hole TO-218 package, 1500 W PPP, 43.0 V VC @ 34.9 A IPP | Requires PCB through-hole layout; unsuitable for high-density SMT production | Choose 1.5KE28A only when board space allows axial/through-hole mounting and 1500 W suffices |
Compared with SMBJ28A and 1.5KE28A, MXDA3KP28A delivers 5× higher surge power handling than SMBJ28A and double the energy capacity of 1.5KE28A in an SMT-compatible package - making it the sole choice for Class 4 IEC61000-4-5 compliance in compact industrial modules.
Availability
MXDA3KP28A is available at Aetrix Electronics and suitable for industrial PLC I/O protection, telecom line interface hardening, and AC/DC power supply input surge suppression requiring stable component supply across multi-year production cycles.
Supply support for MXDA3KP28A 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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The MDA3KP series was developed to deliver military-grade transient suppression in commercial SMT packages, targeting applications demanding MIL-PRF-19500 screening, extended temperature operation, and repeatable 3000 W surge performance.
FAQ
What is the clamping voltage of MXDA3KP28A and how is it measured?
The MXDA3KP28A has a maximum clamping voltage (VC) of 45.4 V, measured at 66 A peak pulse current (IPP) under standardized 10/1000 µs waveform conditions. This value represents the upper limit of voltage seen by downstream circuitry during worst-case surge events and is guaranteed per Microsemi RF01243 Rev B test methodology.
Is MXDA3KP28A RoHS compliant and what does the 'e3' marking indicate?
Yes, MXDA3KP28A is RoHS compliant, indicated by the 'e3' suffix in its full marking per Microsemi nomenclature. The 'e3' denotes annealed matte-tin plating meeting JEDEC/IPC standards, with no lead or restricted substances exceeding EU Directive 2011/65/EU thresholds - confirmed in RF01243 Rev B mechanical specifications.
Can MXDA3KP28A be used for bidirectional protection?
No, MXDA3KP28A is unidirectional only. Its part number lacks the 'C' suffix (e.g., MDA3KP28CA), which Microsemi reserves exclusively for bidirectional variants. Using MXDA3KP28A on AC-coupled or symmetrical signal lines risks forward conduction and failure; select MDA3KP28CA instead for such applications.
What is the standoff voltage rating of MXDA3KP28A and why is it important?
The MXDA3KP28A has a rated reverse standoff voltage (VWM) of 28 V - the maximum continuous DC or peak AC voltage it blocks without significant leakage. This rating ensures compatibility with 24 V industrial systems and prevents false triggering during normal operation while maintaining sufficient margin above system peaks.
Does MXDA3KP28A require derating at elevated temperatures?
Yes, MXDA3KP28A requires thermal derating above 25 °C ambient. Per Figure 3 in RF01243 Rev B, its 3000 W peak pulse power rating decreases linearly to ~70% at +100 °C and ~50% at +125 °C. Designers must apply this curve when sizing for sustained high-temperature environments like enclosed industrial enclosures.
MXDA3KP28A 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:
- -
MXDA3KP28A FAQ
1.How can I place an order for MXDA3KP28A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXDA3KP28A 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 MXDA3KP28A reliable?
The price and inventory of MXDA3KP28A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXDA3KP28A is usually 5 days.
3.What payment methods are accepted for MXDA3KP28A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXDA3KP28A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXDA3KP28A?
MXDA3KP28A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXDA3KP28A 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 MXDA3KP28A?
For technical support, including MXDA3KP28A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXDA3KP28A requirements.
6.How does Aetrix verify that MXDA3KP28A is sourced from the original manufacturer or authorized distributors?
All MXDA3KP28A 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 MXDA3KP28A meets industry standards.
7.What is the process for return or replacement of MXDA3KP28A?
All MXDA3KP28A units undergo pre-shipment inspection (PSI). If there is an issue with MXDA3KP28A, 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 MXDA3KP28A part is unused and in its original packaging.
Return procedure for MXDA3KP28A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXDA3KP28A Tags
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