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Microchip Technology MXDA3KP22CAE3
- Part No.:
- MXDA3KP22CAE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXDA3KP22CAE3.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:9,175
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Product details
Overview
MXDA3KP22CAE3 from Microsemi is a bidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 22 V standoff voltage (VWM), 24.4–26.9 V breakdown voltage (V(BR)), and 35.5 V maximum clamping voltage (VC) at 84.4 A peak pulse current (IPP). It provides 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 protection in telecom power interfaces.
For engineers reviewing the MXDA3KP22CAE3 datasheet, MXDA3KP22CAE3 pinout, MXDA3KP22CAE3 application, or MXDA3KP22CAE3 equivalent, key selection criteria include its bidirectional polarity, RoHS-compliant matte-tin plating, 10/1000 µs surge rating, -55°C to +150°C operating junction temperature, and compatibility with automated SMT assembly per IPC/JEDEC J-STD-020B Level 1 moisture sensitivity.
Technical Context
The MXDA3KP22CAE3 is a monolithic TVS array built using silicon avalanche technology, optimized for fast response (<5 ns) and low clamping ratio (VC/VWM ≈ 1.61). Its bidirectional construction enables symmetrical clamping for AC-coupled lines or differential signal paths without polarity constraints.
It operates as a voltage-clamped shunt protector: under normal conditions it draws ≤2 µA standby current at 22 V, but triggers at ≥24.4 V to divert up to 84.4 A (10/1000 µs) while limiting voltage to ≤35.5 V - critical for safeguarding Ethernet PHYs, PoE injectors, and industrial I/O ports against repetitive transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) min/max | 24.4 V / 26.9 V - guaranteed avalanche onset range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPP | 35.5 V at 84.4 A - clamped voltage during worst-case 10/1000 µs surge; determines protected circuit's overvoltage stress |
| PPP | 3000 W - peak pulse power handling capability under standard 10/1000 µs waveform; defines single-event energy limit |
| ID @ VWM | ≤2 µA - leakage current at rated standoff voltage; ensures minimal power loss and signal integrity in high-impedance circuits |
| TJ/TSTG | -55°C to +150°C - qualified operating and storage temperature range supporting harsh industrial and outdoor deployments |
| Moisture Sensitivity | Level 1 per J-STD-020B - no dry pack or bake required before reflow; supports standard SMT line integration |
Pinout & Package
MXDA3KP22CAE3 uses a 3-pin TO-277A (SMB) surface-mount package with void-free UL94V-0 epoxy body, tin-lead or matte-tin plating, and polarity defined by a dot marking indicating Pin 1 (cathode for unidirectional variants; symmetric terminals for bidirectional MXDA3KP22CAE3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (Bidirectional Terminal A) | One side of symmetrical avalanche junction; connects to line under protection (e.g., ETH+) |
| Pin 2 | Cathode (Bidirectional Terminal B) | Opposite side of symmetrical junction; connects to return path (e.g., ETH−) |
| Pin 3 | Common Cathode (Shared Junction Node) | Internal tie point enabling dual-line protection in single-package configuration; referenced to system ground |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC or differential signals (e.g., RS-485, USB D+/D−) without polarity awareness or external diode pairing |
| 3000 W 10/1000 µs surge rating | Withstands repeated high-energy transients typical in telecom central office equipment and industrial motor drives |
| RoHS-compliant matte-tin plating (e3) | Ensures solderability and intermetallic reliability in lead-free reflow processes without SnPb contamination risk |
| MIL-PRF-19500 screening option | Supports high-reliability programs requiring lot traceability, 3σ ID screening, and wafer-level conformance inspection |
| UL94V-0 epoxy package | Provides flame-retardant mechanical encapsulation meeting safety standards for enclosed power systems |
Applications
| Ethernet Physical Layer Protection | Power over Ethernet (PoE) Injector |
|---|---|
Use Scenario: Protecting 10/100/1000BASE-T PHY transceivers from ESD events and induced surges on twisted-pair cables. IC Role / Device Role / Timing Role: Shunt TVS placed across differential pairs (e.g., TX+/TX−) to clamp common-mode and differential-mode transients. Use Value: Limits clamping voltage to ≤35.5 V, preventing damage to PHY ICs rated for <40 V absolute maximum ratings. | Use Scenario: Safeguarding PoE injector DC-DC converter outputs and data lines against load-dump and cable coupling transients. IC Role / Device Role / Timing Role: Bidirectional TVS mounted at PSE output port to suppress both positive and negative polarity surges from cable faults or hot-plug events. Use Value: 3000 W surge capacity handles multiple 10/1000 µs events without degradation, ensuring long-term PoE system uptime. |
| Industrial Fieldbus Interface | Telecom Line Card Surge Protection |
Use Scenario: Securing RS-485/RS-422 transceivers in factory automation controllers exposed to motor drive noise and ground loop spikes. IC Role / Device Role / Timing Role: TVS array connected between bus lines and local ground to absorb fast-rising inductive kickback (dV/dt > 100 V/ns). Use Value: <5 ns response time ensures clamping activation before transceiver input stages are overstressed. | Use Scenario: Front-end protection on DSL or T1/E1 line cards subjected to secondary lightning surges per IEC61000-4-5 with 42 Ω source impedance. IC Role / Device Role / Timing Role: Primary shunt protector on tip/ring lines, coordinated with upstream gas discharge tubes (GDTs) for staged energy diversion. Use Value: Qualified Class 1–4 secondary lightning protection enables compliance with GR-1089-CORE and ITU-T K.20/K.21 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CA | 600 W PPP rating, same 22 V VWM and bidirectional polarity, but lower VC (35.5 V vs. 37.0 V) and IPP (32.4 A vs. 84.4 A) | Targeted at lower-energy environments (e.g., consumer USB ports); insufficient for telecom-grade lightning testing | Select SMAJ22CA only when system-level surge testing does not exceed IEC61000-4-5 Level 3 (1 kV/2 kV) and space constraints favor smaller SMA package |
| SMCJ22CA | 1500 W PPP rating, identical VWM/VC/IPP specs as MXDA3KP22CAE3 except reduced energy handling (1500 W vs. 3000 W) | Valid for industrial I/O protection where full 3000 W is not mandated; lacks MIL-PRF-19500 upscreening option | Choose SMCJ22CA for cost-sensitive industrial designs needing robustness beyond SMAJ but without telecom or aerospace reliability requirements |
Compared with SMAJ22CA and SMCJ22CA, MXDA3KP22CAE3 delivers double the surge energy capacity of SMCJ22CA and five times that of SMAJ22CA - making it the only option qualified for Class 4 secondary lightning protection with 42 Ω source impedance and suitable for high-reliability telecom infrastructure.
Availability
MXDA3KP22CAE3 is available at Aetrix Electronics and suitable for Ethernet PHY protection, Power over Ethernet (PoE) injectors, industrial fieldbus interfaces, and telecom line card surge protection requiring stable component supply and long-term lifecycle support.
Supply support for MXDA3KP22CAE3 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 designed specifically for high-energy transient suppression in mission-critical infrastructure - emphasizing surge robustness, temperature stability, and traceable manufacturing for telecom central offices, rail signaling, and energy grid control systems.
FAQ
What is the clamping voltage of MXDA3KP22CAE3 at its rated peak pulse current?
The MXDA3KP22CAE3 has a maximum clamping voltage (VC) of 35.5 V at its rated peak pulse current (IPP) of 84.4 A under 10/1000 µs waveform conditions. This value is measured per standard test methods and guarantees the protected circuit will not experience more than 35.5 V during a full-rated surge event, which is essential for interfacing with 3.3 V or 5 V logic-level transceivers.
Is MXDA3KP22CAE3 RoHS compliant and what does the 'e3' suffix indicate?
Yes, MXDA3KP22CAE3 is RoHS compliant. The 'e3' suffix explicitly denotes matte-tin plating per JEDEC J-STD-609A, confirming lead-free termination and compliance with EU Directive 2011/65/EU. This ensures compatibility with lead-free reflow profiles and eliminates hazardous substance concerns in final product certification.
How does the bidirectional design of MXDA3KP22CAE3 affect its use in differential signal lines?
The bidirectional design of MXDA3KP22CAE3 allows symmetrical clamping across both polarities without requiring orientation during placement. In differential applications like RS-485 or Ethernet, it protects both conductors equally against common-mode surges and maintains signal integrity by avoiding DC bias shift - unlike unidirectional TVS arrays that would require two devices or external biasing networks.
Can MXDA3KP22CAE3 be used for IEC61000-4-5 Class 4 secondary lightning protection?
Yes, MXDA3KP22CAE3 is explicitly rated for IEC61000-4-5 Class 4 secondary lightning protection with 42 Ω source impedance, as confirmed in the manufacturer's application table (Page 3). Its 3000 W surge rating and validated clamping performance ensure compliance when implemented per recommended PCB layout and coordination with upstream GDTs or PTCs.
What is the maximum operating junction temperature for MXDA3KP22CAE3 and how does it impact derating?
The MXDA3KP22CAE3 has a maximum junction temperature (TJ) of +150°C and a minimum of -55°C. Its peak pulse power must be derated linearly above +25°C ambient, per Figure 3 in the datasheet: at +100°C case temperature, PPP drops to ~65% of rated 3000 W. This derating is critical for sustained surge duty cycles in enclosed telecom cabinets or industrial enclosures without active cooling.
MXDA3KP22CAE3 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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 84.4A
- 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:
- -
MXDA3KP22CAE3 FAQ
1.How can I place an order for MXDA3KP22CAE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MXDA3KP22CAE3 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 MXDA3KP22CAE3 reliable?
The price and inventory of MXDA3KP22CAE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXDA3KP22CAE3 is usually 5 days.
3.What payment methods are accepted for MXDA3KP22CAE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXDA3KP22CAE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXDA3KP22CAE3?
MXDA3KP22CAE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXDA3KP22CAE3 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 MXDA3KP22CAE3?
For technical support, including MXDA3KP22CAE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXDA3KP22CAE3 requirements.
6.How does Aetrix verify that MXDA3KP22CAE3 is sourced from the original manufacturer or authorized distributors?
All MXDA3KP22CAE3 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 MXDA3KP22CAE3 meets industry standards.
7.What is the process for return or replacement of MXDA3KP22CAE3?
All MXDA3KP22CAE3 units undergo pre-shipment inspection (PSI). If there is an issue with MXDA3KP22CAE3, 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 MXDA3KP22CAE3 part is unused and in its original packaging.
Return procedure for MXDA3KP22CAE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXDA3KP22CAE3 Tags
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