My Inquiry
My Account
Microchip Technology MDA3KP20CA
- Part No.:
- MDA3KP20CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP20CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:9,790
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MDA3KP20CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array in a surface-mount DO-214AB package, designed for high-reliability secondary lightning and ESD protection. It features a 20 V standoff voltage (VWM), 22.2–24.5 V breakdown range (V(BR)), 32.4 V max clamping voltage at 92.6 A peak pulse current, and operates from −55 °C to +150 °C - deployed in telecom power interfaces and industrial I/O protection.
For engineers reviewing the MDA3KP20CA datasheet, MDA3KP20CA pinout, MDA3KP20CA application, or MDA3KP20CA equivalent, key selection criteria include bidirectional polarity, 10/1000 µs surge rating, IEC61000-4-2/4-4/4-5 compliance, thermal derating above 25 °C, and RoHS-compliant matte-tin terminations per MIL-STD-750.
Technical Context
The MDA3KP20CA implements a silicon avalanche diode structure optimized for fast clamping response (<5 ns rise time) under high-energy transients. Its bidirectional configuration enables symmetrical protection of AC-coupled or floating signal lines without polarity constraints.
It is rated for 3000 W peak pulse power at 10/1000 µs waveform with full surge testing per production lot, and supports secondary lightning protection up to IEC61000-4-5 Class 4 (42 Ω source) when used with appropriate PCB layout and series impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - maximum continuous operating voltage before clamping begins; sets minimum system voltage margin for reliable standby operation |
| V(BR) min/max | 22.2–24.5 V @ 1 mA - defines guaranteed avalanche onset window; ensures predictable turn-on across temperature and process variation |
| VC @ IPP | 32.4 V @ 92.6 A - clamping voltage during worst-case 10/1000 µs surge; determines protected circuit's maximum overvoltage stress |
| IPP | 92.6 A - peak impulse current capability; defines maximum transient energy (≈130 J) the device can absorb without failure |
| ID @ VWM | 2 µA - leakage current at rated standoff; low enough to avoid loading sensitive analog or high-impedance control circuits |
| TJ/TSTG | −55 to +150 °C - extended junction temperature range enables use in harsh environments like outdoor base stations and motor drives |
Pinout & Package
MDA3KP20CA uses a DO-214AB (SMC) surface-mount package with two terminals: anode and cathode arranged in a single bidirectional pair. The package is void-free thermosetting epoxy (UL94V-0), with matte-tin-plated leads solderable per MIL-STD-750 Method 2026. Pin 1 is marked by a dot on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input/Output terminal for bidirectional clamping path | Connects to line under protection; forms symmetrical avalanche path with cathode during either polarity transient |
| Cathode (Pin 2) | Input/Output terminal for bidirectional clamping path | Connects to line under protection; completes low-impedance clamp loop with anode during positive or negative overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables single-device protection of AC signals, differential buses, or floating nodes without external polarity management |
| 3000 W peak pulse power @ 10/1000 µs | Supports robust immunity against lightning-induced surges and high-energy switching transients in industrial power systems |
| RoHS-compliant matte-tin plating | Ensures reliable solder wetting and long-term intermetallic stability in lead-free reflow processes |
| Lot-traceable high-reliability screening | Meets MIL-PRF-19500 optional upscreening requirements for aerospace and defense applications |
Applications
| Telecom Power Interface Protection | Industrial PLC Analog I/O Protection |
|---|---|
Use Scenario: Protecting 24 V DC power rails in outdoor telecom cabinets exposed to induced lightning surges and load dump events. IC Role / Device Role / Timing Role: Bidirectional TVS array clamping transients before they reach DC-DC converters and PMICs. Use Value: Limits rail overvoltage to ≤32.4 V during 92.6 A surges, preserving downstream regulator input ratings and preventing latch-up. | Use Scenario: Safeguarding 4–20 mA current-loop inputs in programmable logic controllers subject to EFT bursts and cable coupling noise. IC Role / Device Role / Timing Role: Fast-response (<5 ns) transient suppressor placed at connector entry point to shunt EFT energy away from precision op-amps. Use Value: Maintains signal integrity by clamping sub-microsecond EFT edges while drawing only 2 µA leakage at 20 V nominal rail. |
| Automotive Body Control Module (BCM) CAN Bus Protection | Medical Imaging Equipment Signal Line Protection |
Use Scenario: Secondary protection for CAN_H/CAN_L lines in BCMs where primary filtering is insufficient against battery-dump transients. IC Role / Device Role / Timing Role: Bidirectional clamping device placed after common-mode choke to suppress differential-mode surges exceeding ISO 7637-2 Level 5. Use Value: Withstands 3000 W surges while maintaining <5 ns response, ensuring CAN communication remains intact during 12 V system transients. | Use Scenario: Shielding low-noise analog front-end amplifiers in MRI gradient coil monitoring circuits from RF-induced transients. IC Role / Device Role / Timing Role: High-speed TVS array suppressing MHz-range RF coupling events before they saturate instrumentation amplifiers. Use Value: UL94V-0 epoxy body and 150 °C max junction temperature support operation inside sealed, thermally constrained medical enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | 600 W rating (vs. 3000 W); same DO-214AA package; lower IPP (32.4 A vs. 92.6 A) | Suitable for lower-energy ESD/EFT-only scenarios; not rated for IEC61000-4-5 Class 3/4 lightning | Select MDA3KP20CA when 3000 W surge handling and MIL-PRF-19500 screening are required. |
| 1.5KE20CA | Through-hole DO-201 package; identical 20 V VWM and bidirectional polarity; 3000 W rating but slower response (>10 ns) | Requires PCB through-hole real estate; less suitable for high-density SMT layouts or automated assembly | Choose MDA3KP20CA for surface-mount compatibility, tighter thermal resistance, and modern reflow process support. |
Compared with SMBJ20CA and 1.5KE20CA, the MDA3KP20CA delivers higher surge robustness in a compact SMT footprint with verified <5 ns response and MIL-grade traceability - making it optimal for mission-critical industrial and telecom surge protection where layout density and reliability are jointly constrained.
Availability
MDA3KP20CA is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, automotive body electronics, and medical imaging equipment requiring stable component supply and long-lifecycle availability.
Supply support for MDA3KP20CA 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 harsh-environment electronics, emphasizing surge survivability, temperature resilience, and military-grade process control.
FAQ
What is the clamping voltage of MDA3KP20CA at its rated peak pulse current?
The MDA3KP20CA has a maximum clamping voltage (VC) of 32.4 V at its rated peak pulse current (IPP) of 92.6 A under 10/1000 µs waveform conditions. This value is measured per Figure 2 in the RF01243 datasheet and represents the upper limit of voltage seen by protected circuitry during worst-case surge events. Designers must ensure downstream components tolerate this clamping level at the specified current.
Is MDA3KP20CA unidirectional or bidirectional, and how is polarity identified?
MDA3KP20CA is a bidirectional TVS, indicated by the "C" suffix in its part number. Polarity is defined per the package marking: odd-numbered pins (Pin 1) are cathodes, and even-numbered pins (Pin 2) are anodes - forming a symmetrical avalanche pair. This allows protection of AC-coupled or floating lines without orientation sensitivity during board placement.
Does MDA3KP20CA meet IEC61000-4-5 for secondary lightning protection?
Yes, MDA3KP20CA is rated for secondary lightning protection per IEC61000-4-5 across multiple source impedances: Class 1–4 with 42 Ω source, Class 1–3 with 12 Ω source, and Class 2 with 2 Ω source. These classifications are explicitly listed in the Applications/Benefits section of the RF01243 datasheet, confirming validated performance under standardized surge waveforms.
What is the maximum operating temperature range for MDA3KP20CA?
The MDA3KP20CA supports a junction and storage temperature range of −55 °C to +150 °C, as specified in the Maximum Ratings table on page 2 of RF01243. This wide range enables deployment in under-hood automotive modules, outdoor telecom enclosures, and industrial motor control cabinets where ambient temperatures exceed standard commercial limits.
Is MDA3KP20CA RoHS compliant, and what plating is used on its terminals?
Yes, MDA3KP20CA is RoHS compliant, indicated by the "e3" suffix in its full marking per page 2 of RF01243. Its terminals feature annealed matte-tin plating, qualified for solderability per MIL-STD-750 Method 2026, ensuring consistent wetting and intermetallic formation in lead-free reflow profiles up to 260 °C for 10 seconds.
MDA3KP20CA 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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 92.6A
- 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:
- -
MDA3KP20CA FAQ
1.How can I place an order for MDA3KP20CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP20CA 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 MDA3KP20CA reliable?
The price and inventory of MDA3KP20CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP20CA is usually 5 days.
3.What payment methods are accepted for MDA3KP20CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP20CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP20CA?
MDA3KP20CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP20CA 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 MDA3KP20CA?
For technical support, including MDA3KP20CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP20CA requirements.
6.How does Aetrix verify that MDA3KP20CA is sourced from the original manufacturer or authorized distributors?
All MDA3KP20CA 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 MDA3KP20CA meets industry standards.
7.What is the process for return or replacement of MDA3KP20CA?
All MDA3KP20CA units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP20CA, 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 MDA3KP20CA part is unused and in its original packaging.
Return procedure for MDA3KP20CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP20CA 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…
