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Microchip Technology MDA3KP40CA
- Part No.:
- MDA3KP40CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP40CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:8,371
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Product details
Overview
MDA3KP40CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array designed for high-reliability surge protection in power rails and signal lines. It features a 40 V standoff voltage (VWM), 44.4–49.1 V breakdown voltage (V(BR)), 64.5 V clamping voltage at 46.4 A peak pulse current, and operates from −55 °C to +150 °C. It is used in industrial power supplies for secondary lightning protection per IEC61000-4-5 with 42 Ω source impedance.
For engineers reviewing the MDA3KP40CA datasheet, MDA3KP40CA pinout, MDA3KP40CA application, or MDA3KP40CA equivalent, key selection criteria include bidirectional polarity, 3000 W 10/1000 µs surge rating, RoHS-compliant e3 marking, UL94V-0 molded package, and compatibility with MIL-PRF-19500 upscreening options.
Technical Context
The MDA3KP40CA is a surface-mount TVS diode array with bidirectional conduction, enabling symmetric clamping of positive and negative transients without external polarity management. Its sub-5 ns response time ensures effective suppression of ESD (IEC61000-4-2), EFT (IEC61000-4-4), and induced switching surges.
It delivers 3000 W peak pulse power under 10/1000 µs waveform conditions and maintains clamping performance across −55 °C to +150 °C junction temperature range. Standby leakage is limited to ≤2 µA at 40 V, supporting low-power system integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous DC or peak AC operating voltage before clamping initiates |
| V(BR) min/max | 44.4–49.1 V @ 1 mA - Confirmed breakdown threshold ensuring predictable turn-on margin above VWM |
| VC @ IPP | 64.5 V @ 46.4 A - Clamping voltage during full-rated 10/1000 µs surge, defining maximum let-through voltage |
| PPP | 3000 W @ 10/1000 µs - Peak surge energy handling capacity for lightning and inductive load transients |
| ID @ VWM | ≤2 µA - Ultra-low leakage preserves efficiency in high-impedance monitoring or battery-backed circuits |
| TJ/TSTG | −55 °C to +150 °C - Extended thermal range supports operation in harsh industrial and aerospace environments |
| Polarity | Bidirectional - Enables single-device protection of AC-coupled or floating differential lines without polarity biasing |
Pinout & Package
MDA3KP40CA uses a 3-pin surface-mount plastic package (void-free thermosetting epoxy, UL94V-0 rated) with tin-lead or matte-tin plating. Pin 1 is marked by a dot on the top surface; odd-numbered pins (1 and 3) are cathodes per internal dual-diode configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of first TVS element | Provides common cathode connection for one half of the bidirectional pair; requires proper PCB layout referencing ground or return path |
| Pin 2 | Anode (center tap) | Shared anode node connecting both TVS elements; serves as reference point for symmetrical clamping action |
| Pin 3 | Cathode of second TVS element | Completes the bidirectional structure; enables equal clamping in both voltage polarities when paired with Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables single-component protection of AC signals, differential buses, or ungrounded power rails without polarity constraints |
| 3000 W 10/1000 µs surge rating | Meets IEC61000-4-5 Class 1–4 secondary lightning requirements with 42 Ω source impedance |
| MIL-PRF-19500 upscreening option | Supports high-reliability programs requiring lot traceability, 3σ standby current screening, and conformance inspection |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life limitations per IPC/JEDEC J-STD-020B, simplifying SMT assembly |
| RoHS-compliant e3 marking | Confirms lead-free termination and halogen-free epoxy body compliant with EU Directive 2011/65/EU |
Applications
| Industrial Power Supply Protection | Telecom Line Interface |
|---|---|
Use Scenario: 48 V DC input rail in programmable logic controller (PLC) power module exposed to inductive load switching and nearby lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS array clamping both positive and negative transients on the primary DC bus before they reach downstream regulators and microcontrollers. Use Value: Limits let-through voltage to ≤64.5 V during 46.4 A surges, preventing latch-up or overvoltage damage to 60 V-rated MOSFETs and gate drivers. | Use Scenario: T1/E1 line interface card in central office equipment subjected to EFT bursts and longitudinal surges per GR-1089-CORE. IC Role / Device Role / Timing Role: Primary surge protector on tip/ring pairs, placed ahead of isolation transformers and line driver ICs. Use Value: Sub-5 ns response and 3000 W rating ensure compliance with Telcordia's 10/1000 µs surge test requirements while maintaining signal integrity. |
| Automotive Body Control Module | Renewable Energy Inverter DC Link |
Use Scenario: 12 V battery-supplied body control unit (BCU) enduring load dump and ISO 7637-2 Pulse 5a/b events. IC Role / Device Role / Timing Role: Secondary protection device parallel to primary TVS or varistor, providing precise clamping after front-end filtering. Use Value: 40 V VWM aligns with automotive 12 V nominal systems; 64.5 V VC ensures safe margin below 65 V MCU supply tolerance limits. | Use Scenario: DC link between PV string and inverter H-bridge where fast transients arise from MPPT switching and grid fault coupling. IC Role / Device Role / Timing Role: Transient suppressor across DC+ and DC− terminals to limit voltage overshoot during IGBT commutation. Use Value: 150 °C max junction temperature rating allows placement near heat-generating power stages without derating penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40CA | 600 W PPP rating, DO-214AA package, 64.5 V VC @ 9.3 A - lower surge capacity and smaller footprint | Targeted at consumer-grade or space-constrained designs where 3000 W is not required | Select SMBJ40CA only if system-level surge testing confirms <600 W threat level and PCB layout cannot accommodate larger MDA package |
| SMCJ40CA | 1500 W PPP rating, DO-214AB package, 64.5 V VC @ 23.2 A - mid-tier power handling and industry-standard outline | Suitable for industrial controls where cost and availability outweigh need for MIL-grade reliability | Choose SMCJ40CA when upscreening, lot traceability, or 3000 W capability are not mandated by end-equipment standards |
Compared with SMBJ40CA and SMCJ40CA, the MDA3KP40CA provides double the surge power rating of SMCJ40CA and five times that of SMBJ40CA, along with MIL-PRF-19500 screening eligibility and extended temperature operation - making it uniquely suited for mission-critical infrastructure where failure modes must be minimized.
Availability
MDA3KP40CA is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, automotive body control modules, and renewable energy inverter DC links requiring stable component supply and long-term lifecycle support.
Supply support for MDA3KP40CA 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 MDA series was developed to deliver MIL-qualified transient suppression with guaranteed lot traceability, extended temperature operation, and validated IEC61000-4-5 compliance - targeting safety-critical power conversion and communication infrastructure.
FAQ
What does the 'C' suffix in MDA3KP40CA indicate?
The 'C' suffix in MDA3KP40CA denotes bidirectional polarity, meaning the device contains two opposing avalanche diodes sharing a common anode (Pin 2) and separate cathodes (Pins 1 and 3). This configuration enables symmetrical clamping of both positive and negative transients without requiring external biasing or polarity awareness in the circuit design - a key distinction from unidirectional variants like MDA3KP40A.
How does MDA3KP40CA meet IEC61000-4-5 Class 4 requirements?
MDA3KP40CA meets IEC61000-4-5 Class 4 secondary lightning immunity when tested with a 42 Ω source impedance, delivering 3000 W peak pulse power at 10/1000 µs. Its 64.5 V clamping voltage at 46.4 A ensures protected circuits remain within safe operating limits during the standardized surge waveform - verified per test conditions outlined in the RF01243 datasheet, page 1 and page 3 electrical tables.
Is MDA3KP40CA compatible with lead-free reflow processes?
Yes, MDA3KP40CA supports lead-free reflow soldering with a maximum solder temperature of 260 °C for 10 seconds, as specified in the RF01243 datasheet, page 2. Its terminations are either tin-lead or annealed matte-tin plated per MIL-STD-750 Method 2026, and its e3 marking confirms RoHS compliance - including exemption from lead restrictions under Annex III of Directive 2011/65/EU for high-melting-temperature solders.
What is the significance of the '3σ lot norm screening' for MDA3KP40CA?
The '3σ lot norm screening' applied to MDA3KP40CA refers to statistical process control of standby current (ID) across fabrication lots, ensuring ID remains ≤2 µA at 40 V with ≥99.7% confidence. This screening is part of optional MIL-PRF-19500 upscreening and provides enhanced assurance of low-leakage performance in battery-powered or high-impedance sensing applications where even nanoamp-level drift could impact system accuracy or longevity.
Can MDA3KP40CA replace older MDA3KP40A in existing designs?
No - MDA3KP40CA and MDA3KP40A are not interchangeable without circuit review. While both share identical VWM (40 V), V(BR), and VC ratings, MDA3KP40CA is bidirectional and requires center-anode (Pin 2) connection, whereas MDA3KP40A is unidirectional with anode/cathode orientation. Swapping them would reverse polarity in unidirectional layouts and compromise protection. Always verify schematic symbol, PCB footprint, and clamping direction before substitution.
MDA3KP40CA 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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 46.4A
- 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:
- -
MDA3KP40CA FAQ
1.How can I place an order for MDA3KP40CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP40CA 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 MDA3KP40CA reliable?
The price and inventory of MDA3KP40CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP40CA is usually 5 days.
3.What payment methods are accepted for MDA3KP40CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP40CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP40CA?
MDA3KP40CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP40CA 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 MDA3KP40CA?
For technical support, including MDA3KP40CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP40CA requirements.
6.How does Aetrix verify that MDA3KP40CA is sourced from the original manufacturer or authorized distributors?
All MDA3KP40CA 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 MDA3KP40CA meets industry standards.
7.What is the process for return or replacement of MDA3KP40CA?
All MDA3KP40CA units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP40CA, 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 MDA3KP40CA part is unused and in its original packaging.
Return procedure for MDA3KP40CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP40CA Tags
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