My Inquiry
My Account
Microchip Technology MDA3KP28CAE3
- Part No.:
- MDA3KP28CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP28CAE3.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:5,024
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MDA3KP28CAE3 from Microsemi is a bidirectional 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 sub-5 ns response for ESD, EFT, and secondary lightning protection in telecom power interfaces.
For engineers reviewing the MDA3KP28CAE3 datasheet, MDA3KP28CAE3 pinout, MDA3KP28CAE3 application, or MDA3KP28CAE3 equivalent, key selection criteria include bidirectional polarity, IEC61000-4-2/4-4/4-5 compliance, RoHS-compliant e3 plating, and 150 °C junction temperature rating.
Technical Context
This TVS array uses silicon avalanche diode technology to clamp transient overvoltages across bidirectional signal or power lines. Its <5 ns response time enables protection against fast-rising ESD events (IEC61000-4-2) and electrical fast transients (IEC61000-4-4), while sustaining 3000 W peak pulse power at 10/1000 µs waveform.
The device operates from −55 °C to +150 °C, features UL94V-0 void-free epoxy packaging, and supports MIL-PRF-19500 high-reliability screening options. Standby leakage current is ≤2 µA at 28 V, and clamping performance is validated up to 66 A IPP with 45.4 V VC max.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous operating voltage before clamping begins; matches 24 V nominal DC systems with safety margin. |
| V(BR) min/max | 31.1–34.4 V - Breakdown occurs within this range at 1 mA; ensures predictable turn-on without premature conduction. |
| VC @ IPP | 45.4 V @ 66 A - Clamped voltage during worst-case 10/1000 µs surge; limits downstream IC stress below safe thresholds. |
| PPP | 3000 W - Peak pulse power handling per IEC61000-4-5; supports Class 1–4 secondary lightning protection. |
| Response time | <5 ns - Enables effective suppression of ESD (±8 kV contact) and EFT bursts before system damage occurs. |
| TJ/TSTG | −55 to +150 °C - Wide thermal range allows deployment in industrial enclosures and outdoor telecom cabinets. |
| RoHS | e3 - Matte-tin plating compliant with EU RoHS Directive 2011/65/EU; no lead or hazardous substances. |
Pinout & Package
MDA3KP28CAE3 uses a 2-pin SMD package (case outline per RF01243 Page 6). Pin 1 is cathode; polarity is bidirectional, so both terminals serve symmetrically as anode/cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (bidirectional) | Marked by dot on top; functions as cathode during positive transients and anode during negative transients. |
| Pin 2 | Anode (bidirectional) | Unmarked terminal; functions as anode during positive transients and cathode during negative transients. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Protects AC-coupled or floating DC lines (e.g., RS-485, CAN bus, Ethernet PHY) without polarity constraints. |
| 3000 W peak pulse power | Withstands IEC61000-4-5 surges up to 42 Ω source impedance (Class 1–4) and 12 Ω (Class 1–3). |
| Sub-5 ns response | Clamps transients before sensitive logic or analog circuitry experiences latch-up or gate oxide damage. |
| MIL-PRF-19500 screening option | Enables use in aerospace, defense, and critical infrastructure where wafer lot traceability and 3σ ID screening are required. |
| UL94V-0 epoxy body | Self-extinguishing plastic housing meets flammability requirements for enclosed power supply and base station designs. |
Applications
| Telecom Power Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting 48 V DC power inputs in cellular base stations from induced lightning surges and switching noise. IC Role / Device Role / Timing Role: Primary parallel-connected TVS array clamping line-to-ground transients before they reach DC-DC converters. Use Value: Limits clamped voltage to 45.4 V, preventing overvoltage damage to 36 V-rated input stages while supporting 3000 W surge energy. | Use Scenario: Guarding differential RS-485 data lines in factory automation PLCs exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Bidirectional shunt protector across A/B bus lines, responding within 5 ns to fast common-mode transients. Use Value: Maintains signal integrity by clamping ±28 V transients to ≤45.4 V without adding capacitance that degrades 10 Mbps signaling. |
| Automotive Body Control Module | Medical Imaging Power Supply |
Use Scenario: Safeguarding 24 V battery-fed microcontroller I/O and sensor inputs in harsh automotive environments. IC Role / Device Role / Timing Role: Secondary-level TVS placed after fuse and upstream of LDO regulators to absorb load dump and ISO 7637-2 pulses. Use Value: Withstands 66 A peak current at 10/1000 µs while maintaining ≤45.4 V clamping-well below 36 V absolute max ratings of most MCUs. | Use Scenario: Shielding high-voltage DC rails in MRI and CT scanner power supplies from EFT coupling and capacitor discharge events. IC Role / Device Role / Timing Role: High-energy transient limiter on intermediate bus (e.g., 28 V output of front-end rectifier) feeding isolated DC-DC modules. Use Value: Delivers 3000 W pulse handling with −55 to +150 °C operation, enabling reliable protection in thermally constrained medical chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CA | 600 W PPP rating; same 28 V VWM and bidirectional polarity; DO-214AA package vs. MDA3KP28CAE3's larger SMD case. | Lower energy handling limits use to sub-20 A surges; suitable for consumer-grade I/O ports but not telecom lightning zones. | Select SMBJ28CA only when board space is constrained and surge threat level is Class 2 or lower per IEC61000-4-5. |
| SMCJ28CA | 1500 W PPP; same VWM and bidirectional configuration; DO-214AB package; 3× lower peak pulse power than MDA3KP28CAE3. | Insufficient for Class 3/4 lightning protection; acceptable for ESD/EFT-only zones in industrial control panels. | Choose SMCJ28CA for cost-sensitive designs where 3000 W capability is unnecessary and PCB layout allows larger DO-214AB footprint. |
Compared with SMBJ28CA and SMCJ28CA, MDA3KP28CAE3 provides double the pulse power of SMCJ28CA and five times that of SMBJ28CA-making it the only option qualified for full Class 4 secondary lightning protection in telecom infrastructure and rail signaling systems.
Availability
MDA3KP28CAE3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and medical imaging systems requiring stable component supply with high-energy transient resilience.
Supply support for MDA3KP28CAE3 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 engineered for mission-critical surge protection in environments demanding MIL-PRF-19500 screening, wide temperature operation, and guaranteed 3000 W pulse handling-targeting telecom base stations, railway signaling, and medical power systems.
FAQ
What is the clamping voltage of MDA3KP28CAE3 at its rated peak pulse current?
The MDA3KP28CAE3 has a maximum clamping voltage (VC) of 45.4 V at 66 A peak pulse current (IPP), measured under 10/1000 µs waveform conditions. This value ensures protected circuits remain below critical overvoltage thresholds during high-energy transients, and is verified per Microsemi RF01243 Rev B test methodology.
Is MDA3KP28CAE3 unidirectional or bidirectional, and how does that affect circuit placement?
MDA3KP28CAE3 is bidirectional, indicated by the "C" suffix in its part number. It protects AC-coupled or floating DC lines symmetrically-no orientation dependency during layout. Unlike unidirectional TVS devices, MDA3KP28CAE3 clamps both positive and negative transients across the same two terminals, simplifying placement on differential buses like RS-485 or Ethernet PHY interfaces.
Does MDA3KP28CAE3 meet IEC61000-4-5 Class 4 lightning surge requirements?
Yes, MDA3KP28CAE3 meets IEC61000-4-5 Class 4 secondary lightning protection when tested with 42 Ω source impedance, as confirmed in Microsemi RF01243 Rev B. Its 3000 W peak pulse power rating and 45.4 V clamping voltage enable compliance across all defined Class 1–4 levels for 28 V standoff devices, including 12 Ω and 2 Ω source impedances per application-specific derating.
What is the junction temperature range and thermal derating behavior of MDA3KP28CAE3?
MDA3KP28CAE3 operates from −55 °C to +150 °C junction temperature. Its peak pulse power must be derated linearly above 25 °C ambient, following the curve in RF01243 Figure 3: at 100 °C, PPP drops to ~65% of rated 3000 W. This derating ensures sustained reliability in enclosed telecom cabinets or industrial enclosures without forced airflow.
How is RoHS compliance implemented in MDA3KP28CAE3, and what does the "e3" suffix signify?
The "e3" suffix in MDA3KP28CAE3 denotes matte-tin plating per J-STD-609A, confirming full compliance with EU RoHS Directive 2011/65/EU. This plating replaces traditional tin-lead finishes, eliminates lead content, and maintains solderability per MIL-STD-750 Method 2026-enabling use in environmentally regulated medical and consumer electronics without requalification.
MDA3KP28CAE3 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:
- -
MDA3KP28CAE3 FAQ
1.How can I place an order for MDA3KP28CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP28CAE3 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 MDA3KP28CAE3 reliable?
The price and inventory of MDA3KP28CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP28CAE3 is usually 5 days.
3.What payment methods are accepted for MDA3KP28CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP28CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP28CAE3?
MDA3KP28CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP28CAE3 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 MDA3KP28CAE3?
For technical support, including MDA3KP28CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP28CAE3 requirements.
6.How does Aetrix verify that MDA3KP28CAE3 is sourced from the original manufacturer or authorized distributors?
All MDA3KP28CAE3 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 MDA3KP28CAE3 meets industry standards.
7.What is the process for return or replacement of MDA3KP28CAE3?
All MDA3KP28CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP28CAE3, 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 MDA3KP28CAE3 part is unused and in its original packaging.
Return procedure for MDA3KP28CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP28CAE3 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
