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Microchip Technology MDA3KP28CA
- Part No.:
- MDA3KP28CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP28CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,012
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Product details
Overview
MDA3KP28CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array designed for high-reliability surge protection in industrial and aerospace systems. It features a 28 V standoff voltage (VWM), 31.1–34.4 V breakdown voltage (V(BR)), 45.4 V clamping voltage at 66 A peak pulse current, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the MDA3KP28CA datasheet, MDA3KP28CA pinout, MDA3KP28CA application, or MDA3KP28CA equivalent, this device serves as a MIL-PRF-19500 upscreenable, RoHS-compliant TVS for secondary lightning protection per IEC61000-4-5 (42 Ω, 12 Ω, and 2 Ω source impedances), ESD/EFT suppression per IEC61000-4-2/4-4, and inductive switching transient mitigation.
Technical Context
The MDA3KP28CA is a surface-mount, bidirectional TVS diode array with void-free thermosetting epoxy packaging rated for 3000 W peak pulse power at 10/1000 µs waveform. Its clamping response time is under 5 ns, and it delivers 45.4 V maximum clamping voltage at 66 A IPP while maintaining ≤2 µA standby current at 28 V.
It supports secondary lightning protection across Class 1–4 per IEC61000-4-5 with 42 Ω source impedance, Class 1–3 with 12 Ω, and Class 2–4 with 2 Ω - all confirmed for MDA3KP28CA specifically. Polarity follows odd-pin cathode convention, and marking includes dot-defined Pin 1.
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 triggering above system operating peaks |
| VC @ IPP | 45.4 V @ 66 A - limits downstream voltage stress during 10/1000 µs transients |
| PPP | 3000 W @ 10/1000 µs - handles high-energy surges without thermal failure |
| ID @ VWM | ≤2 µA - negligible leakage at rated standoff, preserving signal integrity |
| TJ/TSTG | –55 °C to +150 °C - enables deployment in extended-temperature avionics and downhole equipment |
| Response time | <5 ns - clamps ESD events faster than most microcontrollers can respond |
Pinout & Package
MDA3KP28CA uses a 3-pin surface-mount package with void-free UL94V-0 epoxy body, tin-lead or matte-tin plating, and polarity defined by dot-marked Pin 1. Odd-numbered pins are cathodes per internal TVS element.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of Channel 1 | Primary surge path anode connects externally; pin 1 must be tied to protected line |
| Pin 2 | Anode/Common | Shared low-impedance return node for bidirectional clamping action |
| Pin 3 | Cathode of Channel 2 | Second protected line connection; symmetric with Pin 1 for balanced differential protection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables symmetrical clamping on AC lines or differential data buses without polarity constraints |
| MIL-PRF-19500 upscreening option | Supports high-reliability qualification for defense/aerospace programs requiring lot traceability and 3σ ID screening |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to reflow, reducing assembly cost and risk |
| 10/1000 µs surge tested | Each unit validated to withstand full 3000 W transient energy per IEC61000-4-5 test conditions |
| UL94V-0 epoxy package | Provides flame-retardant mechanical integrity in high-vibration or high-temperature enclosures |
Applications
| Industrial Motor Drives | Aerospace Avionics Power |
|---|---|
Use Scenario: Protection of DC bus inputs against inductive kickback from contactors and relays. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient spikes before they reach gate drivers or MCU power rails. Use Value: Prevents latch-up or permanent damage to 28 V-rated control ICs during 66 A surge events. | Use Scenario: Secondary lightning protection on 28 V aircraft power distribution panels per DO-160 Section 22. IC Role / Device Role / Timing Role: Fast-response surge limiter absorbing 3000 W pulses with <5 ns latency to meet MIL-STD-461 RS103 limits. Use Value: Maintains system uptime by limiting clamped voltage to 45.4 V - below 50 V rail tolerance thresholds. |
| Telecom Base Station RF Front-End | Railway Signaling Interfaces |
Use Scenario: ESD protection on antenna feedlines exposed to outdoor environments. IC Role / Device Role / Timing Role: Bidirectional TVS shunting ±15 kV HBM ESD strikes per IEC61000-4-2 while preserving RF insertion loss. Use Value: Achieves sub-5 ns response and ≤2 µA leakage - critical for maintaining receiver sensitivity. | Use Scenario: Surge protection on 28 V signaling lines in train control interlock circuits. IC Role / Device Role / Timing Role: Clamps induced surges from nearby traction motor switching (IEC61000-4-4 EFT) and track-side lightning coupling. Use Value: Delivers Class 4 immunity per IEC61000-4-5 with 42 Ω source impedance - verified for MDA3KP28CA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CA | 600 W PPP rating, same VWM and bidirectional polarity, SMC package | Lower energy handling; suitable only for ESD/EFT, not secondary lightning | Select when system transients are limited to IEC61000-4-2/4-4 and PCB space is constrained |
| SMCJ28CA | 1500 W PPP, same VWM, larger SMC package, higher thermal mass | Insufficient for Class 4 IEC61000-4-5 with 42 Ω source; requires derating above 85 °C | Choose where cost sensitivity outweighs full 3000 W compliance and ambient temperatures remain <70 °C |
Compared with SMBJ28CA and SMCJ28CA, the MDA3KP28CA uniquely delivers full 3000 W surge capability with verified Class 4 secondary lightning compliance at 42 Ω, MIL-PRF-19500 upscreening support, and moisture-insensitive Level 1 handling - making it the only option qualified for mission-critical aerospace and heavy-industrial deployments.
Availability
MDA3KP28CA is available at Aetrix Electronics and suitable for industrial motor drives, aerospace avionics power systems, and railway signaling interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MDA3KP28CA 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, and industrial markets, with emphasis on radiation-hardened, high-temperature, and ultra-low-leakage performance.
The MDA series was developed specifically for high-energy transient suppression in safety-critical systems where MIL-PRF-19500 conformance, lot traceability, and guaranteed 3000 W 10/1000 µs surge capability are mandatory design requirements.
FAQ
What is the clamping voltage of MDA3KP28CA at its rated peak pulse current?
The MDA3KP28CA has a maximum clamping voltage (VC) of 45.4 V at its specified peak pulse current (IPP) of 66 A under 10/1000 µs waveform conditions. 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. The MDA3KP28CA maintains this clamping performance across its full operating temperature range.
Is MDA3KP28CA suitable for IEC61000-4-5 Class 4 secondary lightning protection?
Yes, MDA3KP28CA is explicitly rated for IEC61000-4-5 Class 4 secondary lightning protection with 42 Ω source impedance, as confirmed in the Applications/Benefits section of the RF01243 datasheet. It also supports Class 1–3 with 12 Ω and Class 2–4 with 2 Ω source impedances. This classification is validated for the exact MDA3KP28CA part number, not inferred from family data.
Does MDA3KP28CA require dry packing or baking before reflow soldering?
No, MDA3KP28CA has IPC/JEDEC J-STD-020B moisture sensitivity level 1, meaning it does not absorb sufficient moisture during standard factory handling to require dry pack or pre-reflow baking. This eliminates process steps, reduces manufacturing risk, and supports direct placement into standard lead-free reflow profiles up to 260 °C peak solder temperature.
What is the polarity configuration of MDA3KP28CA and how is it marked on the package?
MDA3KP28CA is a bidirectional TVS array with odd-numbered pins (1 and 3) serving as cathodes and Pin 2 as the common anode. Polarity is physically indicated by a dot on the top surface of the package adjacent to Pin 1, as documented in the Mechanical and Packaging section of the RF01243 datasheet. This marking aligns with industry-standard orientation for multi-channel TVS devices.
Can MDA3KP28CA be used in aerospace applications requiring MIL-PRF-19500 screening?
Yes, MDA3KP28CA supports optional MIL-PRF-19500 upscreening with wafer and assembly lot traceability, 3σ screening on standby current (ID), and conformance inspections per Micronote 129. This makes it suitable for flight-critical avionics, satellite power systems, and other aerospace applications where high-reliability qualification is mandated - a capability not shared by standard commercial TVS diodes.
MDA3KP28CA 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:
- -
- Bidirectional Channels:
- 8
- 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:
- -
MDA3KP28CA FAQ
1.How can I place an order for MDA3KP28CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP28CA 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 MDA3KP28CA reliable?
The price and inventory of MDA3KP28CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP28CA is usually 5 days.
3.What payment methods are accepted for MDA3KP28CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP28CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP28CA?
MDA3KP28CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP28CA 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 MDA3KP28CA?
For technical support, including MDA3KP28CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP28CA requirements.
6.How does Aetrix verify that MDA3KP28CA is sourced from the original manufacturer or authorized distributors?
All MDA3KP28CA 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 MDA3KP28CA meets industry standards.
7.What is the process for return or replacement of MDA3KP28CA?
All MDA3KP28CA units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP28CA, 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 MDA3KP28CA part is unused and in its original packaging.
Return procedure for MDA3KP28CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP28CA Tags
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