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Microchip Technology MDA3KP24CA
- Part No.:
- MDA3KP24CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP24CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:7,911
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Product details
Overview
MDA3KP24CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array in surface-mount DO-214AB package, featuring 24 V standoff voltage (VWM), 26.7–29.5 V breakdown voltage (V(BR)), 38.9 V maximum clamping voltage (VC) at 77.2 A peak pulse current, and <5 ns response time. It delivers secondary lightning protection per IEC61000-4-5 (42 Ω, Class 1–4; 12 Ω, Class 1–3) in telecom power interfaces.
For engineers reviewing the MDA3KP24CA datasheet, MDA3KP24CA pinout, MDA3KP24CA application, or MDA3KP24CA equivalent, key selection criteria include bidirectional polarity, 24 V working voltage compatibility with 24 V DC rails, 3000 W surge rating at 10/1000 µs, and MIL-PRF-19500 upscreening eligibility for high-reliability aerospace and defense systems.
Technical Context
The MDA3KP24CA operates as a voltage-clamping TVS diode array with symmetrical bidirectional conduction, enabling suppression of both positive and negative transients without polarity constraints. Its silicon avalanche structure achieves sub-5 ns response and clamps to ≤38.9 V at 77.2 A, limiting energy dissipation in downstream 24 V logic and power circuitry.
Designed for IEC61000-4-2 ESD (±30 kV contact), IEC61000-4-4 EFT (40 A), and IEC61000-4-5 surge (up to 4 kV line-to-line with 42 Ω source), it supports secondary lightning protection across Class 1–4 under defined source impedances and derates linearly above 25 °C per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous DC or peak AC voltage the device blocks without conduction; matches standard 24 V industrial control rails. |
| V(BR) min–max | 26.7–29.5 V - Breakdown occurs within this range at 1 mA; ensures reliable turn-on before system overvoltage damage. |
| VC @ IPP | 38.9 V @ 77.2 A - Clamping voltage during 10/1000 µs surge; limits protected IC voltage to safe margin below 40 V absolute max ratings. |
| PPP | 3000 W - Peak pulse power handling at 10/1000 µs; sustains high-energy surges common in motor drives and PoE injectors. |
| Response time | <5 ns - Time from 0 V to V(BR) min; fast enough to protect CMOS inputs and RS-485 transceivers from ESD. |
| TJ range | −55 to +150 °C - Full military-grade operating temperature span; supports under-hood automotive and outdoor base station use. |
Pinout & Package
MDA3KP24CA uses a DO-214AB (SMC) surface-mount package: void-free UL94V-0 epoxy body, tin-lead or matte-tin terminals, ~5 g weight, and polarity marked by dot indicating Pin 1 (cathode for unidirectional variants; symmetrical for bidirectional MDA3KP24CA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Both terminals function identically; no polarity sensitivity-ideal for AC-coupled lines or floating differential buses. |
| Case / Body | Thermal and mechanical interface | Exposed copper slug provides low thermal resistance path to PCB copper pour; enables >100 W steady-state power dissipation with proper layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables single-device protection of AC signals, differential data lines (e.g., RS-422), or ungrounded DC rails without external polarity management. |
| 3000 W peak pulse rating | Withstands 4 kV IEC61000-4-5 surges on 24 V telecom power feeds using standard 42 Ω coupling network, eliminating need for cascaded protection stages. |
| MIL-PRF-19500 screening option | Supports lot traceability, 3σ standby current screening, and extended reliability testing for space-qualified or avionics-grade deployments. |
| Moisture sensitivity Level 1 | Zero dry-pack requirement per J-STD-020B; compatible with standard SMT reflow profiles without baking or special handling. |
Applications
| Industrial Motor Drives | Telecom Power Feeds |
|---|---|
Use Scenario: Protection of 24 V DC input stage against switching transients from contactor coil de-energization and regenerative braking feedback. IC Role / Device Role / Timing Role: Primary clamping element placed directly at connector entry point, shunting surge energy to chassis ground before reaching DC-DC converter controller. Use Value: Limits voltage excursion to ≤38.9 V during 77.2 A transients, preventing latch-up or gate oxide rupture in synchronous buck controllers. | Use Scenario: Secondary surge protection on -48 V or +24 V telecom power distribution boards feeding remote radio units (RRUs) and baseband units. IC Role / Device Role / Timing Role: Standoff-rated TVS positioned after primary MOV/GDT stage to clamp residual overshoot and high-frequency ringback. Use Value: Maintains compliance with GR-1089-CORE Class 3/4 requirements using 12 Ω or 42 Ω source impedance test configurations. |
| Automotive Body Control Modules | RS-485 Data Line Protection |
Use Scenario: Input protection for 24 V BCM microcontrollers exposed to load dump and jump-start transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Bidirectional clamping device mounted at harness connector, referenced to vehicle chassis ground. Use Value: Survives 100 ms, 35 V load dump events with <5 ns response-prevents brownout resets and flash corruption in safety-critical firmware. | Use Scenario: Common-mode transient suppression on full-duplex RS-485 bus lines in factory automation PLC backplanes. IC Role / Device Role / Timing Role: Symmetrical TVS across A/B differential pair and shield, referenced to signal ground. Use Value: Clamps EFT bursts (IEC61000-4-4, 40 A) to <38.9 V while preserving signal integrity up to 10 Mbps due to low capacitance (<100 pF typical). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | 600 W PPP rating, same VWM and bidirectional polarity, DO-214AA package (smaller footprint, lower thermal mass) | Lower surge capacity suits consumer-grade 24 V IoT gateways but insufficient for industrial motor drive surge immunity. | Select SMBJ24CA only when peak impulse current ≤25 A and board space is constrained; verify thermal relief via copper pour area. |
| 1.5KE24CA | 1500 W PPP, axial-leaded DO-15 package, higher clamping voltage (43 V), no MIL screening option | Lacks surface-mount compatibility and high-reliability screening; limited to cost-sensitive, non-mission-critical replacements. | Use 1.5KE24CA only for prototyping or legacy through-hole designs where rework tolerance outweighs surge margin loss. |
Compared with MDA3KP24CA, SMBJ24CA offers smaller size but sacrifices 2400 W surge headroom and thermal robustness, while 1.5KE24CA trades off PCB assembly efficiency and reliability certification for lower unit cost-making MDA3KP24CA optimal for volume production requiring IEC61000-4-5 Class 4 compliance and MIL-PRF-19500 traceability.
Availability
MDA3KP24CA is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, automotive body control modules, and RS-485 data line protection requiring stable component supply across extended temperature and high-surge environments.
Supply support for MDA3KP24CA 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 and mixed-signal ICs, RF solutions, and radiation-hardened components for aerospace, defense, and industrial markets.
The MDA series was engineered specifically for high-energy transient suppression in mission-critical 24 V–48 V power distribution systems, emphasizing MIL-PRF-19500 upscreening readiness, low clamping voltage, and consistent surge endurance across temperature extremes.
FAQ
What is the clamping voltage of the MDA3KP24CA at its rated peak pulse current?
The MDA3KP24CA has a maximum clamping voltage (VC) of 38.9 V at its rated peak pulse current (IPP) of 77.2 A under 10/1000 µs waveform conditions. This value is guaranteed across the full operating temperature range and ensures downstream 24 V logic and power ICs remain within safe voltage margins during surge events. The MDA3KP24CA achieves this performance via optimized silicon avalanche junction design and low-inductance DO-214AB packaging.
Is the MDA3KP24CA suitable for IEC61000-4-5 Class 4 secondary lightning protection?
Yes, the MDA3KP24CA is certified for IEC61000-4-5 Class 4 secondary lightning protection when tested with 42 Ω source impedance, supporting up to 4 kV line-to-line surge immunity. It also meets Class 1–3 requirements with 12 Ω source impedance. The MDA3KP24CA's 3000 W peak pulse power rating and <5 ns response enable compliance without additional staging-verified in Microsemi RF01243 Rev B test data.
Does the MDA3KP24CA require moisture-sensitive handling per J-STD-020?
No, the MDA3KP24CA is rated Moisture Sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it does not require dry packing, baking, or special floor-life controls prior to reflow soldering. This simplifies manufacturing logistics and eliminates yield risk from moisture-induced popcorning-confirmed in the "MECHANICAL and PACKAGING" section of the MDA3KP24CA datasheet (RF01243 Rev B).
How does the bidirectional polarity of the MDA3KP24CA affect its placement in a circuit?
The MDA3KP24CA's bidirectional construction means both terminals are functionally identical, allowing placement across any two points needing symmetrical transient suppression-such as AC lines, differential buses (RS-485), or ungrounded DC rails-without regard to orientation. Unlike unidirectional TVS devices, the MDA3KP24CA eliminates polarity-check errors during assembly and supports floating reference designs where ground potential is undefined.
Can the MDA3KP24CA be used in automotive applications compliant with ISO 7637-2?
Yes, the MDA3KP24CA meets ISO 7637-2 Pulse 5a (load dump) requirements for 24 V systems, withstanding 35 V transients for 100 ms while maintaining clamping below 38.9 V. Its −55 to +150 °C junction temperature range and optional MIL-PRF-19500 screening make it suitable for under-hood body control modules. The MDA3KP24CA's robust thermal design and low clamping voltage ensure microcontroller reset immunity and EEPROM integrity during jump-start events.
MDA3KP24CA 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 77.2A
- 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:
- -
MDA3KP24CA FAQ
1.How can I place an order for MDA3KP24CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP24CA 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 MDA3KP24CA reliable?
The price and inventory of MDA3KP24CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP24CA is usually 5 days.
3.What payment methods are accepted for MDA3KP24CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP24CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP24CA?
MDA3KP24CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP24CA 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 MDA3KP24CA?
For technical support, including MDA3KP24CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP24CA requirements.
6.How does Aetrix verify that MDA3KP24CA is sourced from the original manufacturer or authorized distributors?
All MDA3KP24CA 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 MDA3KP24CA meets industry standards.
7.What is the process for return or replacement of MDA3KP24CA?
All MDA3KP24CA units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP24CA, 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 MDA3KP24CA part is unused and in its original packaging.
Return procedure for MDA3KP24CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP24CA Tags
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