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Microchip Technology MDA3KP33CA
- Part No.:
- MDA3KP33CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP33CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,492
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Product details
Overview
MDA3KP33CA from Microsemi is a bidirectional 3000 W surface-mount transient voltage suppressor (TVS) array designed for high-reliability secondary lightning and ESD protection in industrial power interfaces. It features a 33 V reverse standoff voltage (VWM), 36.7–40.6 V breakdown voltage (V(BR)), 53.3 V maximum clamping voltage at 56.2 A peak pulse current, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the MDA3KP33CA datasheet, MDA3KP33CA pinout, MDA3KP33CA application, or MDA3KP33CA equivalent, this device serves as a high-energy, bidirectional surge protector for DC power rails, telecom line cards, and industrial I/O ports where IEC 61000-4-5 (42 Ω source), IEC 61000-4-2, and IEC 61000-4-4 compliance is required.
Technical Context
The MDA3KP33CA implements a silicon avalanche diode structure optimized for sub-5 ns response time and low clamping ratio (VC/V(BR) ≈ 1.38). Its bidirectional configuration enables symmetrical surge suppression on AC-coupled or floating lines without polarity constraints.
It delivers 3000 W peak pulse power at 10/1000 µs waveform with full surge testing per production lot, and supports MIL-PRF-19500 upscreening options for aerospace and defense applications requiring traceable wafer/assembly lots and 3σ standby current screening.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous DC or peak AC voltage the device blocks without conduction |
| V(BR) min/max | 36.7–40.6 V @ 1 mA - Confirmed avalanche onset range defining reliable turn-on threshold |
| VC @ IPP | 53.3 V @ 56.2 A - Clamping voltage limiting downstream component stress during worst-case 10/1000 µs surge |
| IPP | 56.2 A - Peak impulse current capability derived from 3000 W rating and VC |
| ID @ VWM | 2 µA max - Ultra-low leakage ensuring minimal power loss and signal integrity in standby |
| TJ range | –55 °C to +150 °C - Extended thermal operating envelope for under-hood, industrial, and avionics environments |
Pinout & Package
MDA3KP33CA uses a 3-pin SMC (DO-214AB) surface-mount package with cathode-defined pin numbering: Pin 1 and Pin 3 are cathodes of the two back-to-back TVS diodes; Pin 2 is the common anode node. The void-free UL94V-0 epoxy body weighs ~5 g and supports reflow soldering at 260 °C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of Diode 1 | Connects to protected line 1; defines polarity reference for bidirectional clamping |
| Pin 2 | Common Anode | Internal tie point between two anti-parallel diodes; connects to ground or reference plane |
| Pin 3 | Cathode of Diode 2 | Connects to protected line 2; enables symmetrical surge handling across differential or AC paths |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional construction | Enables single-device protection of AC, differential, or floating signals without external polarity management |
| 3000 W peak pulse power | Withstands high-energy transients per IEC 61000-4-5 Class 1–4 (42 Ω, 12 Ω, 2 Ω source impedances) |
| MIL-PRF-19500 upscreening option | Supports high-reliability qualification including lot traceability, 3σ ID screening, and conformance inspection |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and bake-out prior to assembly per IPC/JEDEC J-STD-020B |
Applications
| Industrial Power Input Protection | Telecom Line Card Surge Suppression |
|---|---|
Use Scenario: 24–48 V DC power entry on programmable logic controllers exposed to load dump and inductive switching. IC Role / Device Role / Timing Role: Bidirectional TVS array clamping both polarities of input rail to ground during fast-rising surges. Use Value: Limits voltage excursion to ≤53.3 V during 56.2 A transients, protecting upstream DC-DC converters and microcontrollers. | Use Scenario: T1/E1 interface cards in central office equipment subjected to lightning-induced surges on balanced pairs. IC Role / Device Role / Timing Role: Differential-mode surge clamp across tip/ring lines using back-to-back diode configuration. Use Value: Maintains signal integrity by clamping ±33 V standoff excursions symmetrically while meeting IEC 61000-4-5 Class 3 (12 Ω source). |
| Automotive Body Control Module I/O | Industrial Sensor Interface Protection |
Use Scenario: LIN bus or switched 12 V sensor supply lines in under-hood modules subject to ISO 7637-2 pulses and ESD. IC Role / Device Role / Timing Role: Low-leakage (2 µA) bidirectional clamp on each protected line referenced to chassis ground. Use Value: Survives –55 °C to +150 °C ambient while suppressing 15 kV ESD (IEC 61000-4-2) without degrading baseline current draw. | Use Scenario: 4–20 mA current loop inputs in process automation systems exposed to field wiring transients. IC Role / Device Role / Timing Role: High-energy TVS placed across loop terminals to shunt surge energy before it reaches precision DAC/ADC circuitry. Use Value: 53.3 V clamping ensures op-amp input stages remain within absolute maximum ratings during 3000 W events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | 600 W rating, 58.1 V clamping at 10.3 A, DO-214AA package | Limited to lower-energy threats (IEC 61000-4-5 Class 2 only with 42 Ω source) | Select when board space is constrained and surge threat level is ≤600 W |
| SMCJ33CA | 1500 W rating, 53.3 V clamping at 28.1 A, same DO-214AB package | Half the peak pulse energy; insufficient for Class 4 lightning per IEC 61000-4-5 (42 Ω) | Choose if cost optimization is critical and system-level testing confirms 1500 W sufficiency |
Compared with SMBJ33CA and SMCJ33CA, the MDA3KP33CA delivers double the pulse energy handling of SMCJ33CA and five times that of SMBJ33CA-enabling robust Class 4 secondary lightning protection in a drop-in compatible SMC footprint without layout change.
Availability
MDA3KP33CA is available at Aetrix Electronics and suitable for industrial power input protection, telecom line card surge suppression, and automotive body control module I/O requiring stable component supply and long-term lifecycle support.
Supply support for MDA3KP33CA 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 MDA series was developed specifically for mission-critical surge protection in harsh environments where MIL-PRF-19500 screening, wide temperature operation, and guaranteed 3000 W pulse performance are mandatory.
FAQ
What does the 'C' suffix in MDA3KP33CA indicate?
The 'C' suffix in MDA3KP33CA denotes bidirectional polarity-meaning the device contains two avalanche diodes connected in series opposition to provide symmetrical clamping for AC or floating signal lines. This differs from unidirectional variants like MDA3KP33A, which protect only one polarity relative to ground. MDA3KP33CA is specified with 33 V standoff and tested for bidirectional surge compliance per IEC 61000-4-2, -4-4, and -4-5.
What is the maximum clamping voltage of MDA3KP33CA and at what test condition?
The maximum clamping voltage (VC) of MDA3KP33CA is 53.3 V, measured at a peak pulse current (IPP) of 56.2 A under the standard 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during worst-case transients. MDA3KP33CA maintains this clamping performance with <5 ns response time.
Is MDA3KP33CA RoHS compliant?
Yes, MDA3KP33CA is RoHS compliant, indicated by the 'e3' suffix in its full marking per Microsemi's nomenclature. The device uses annealed matte-tin plating on terminals and meets UL94V-0 flammability requirements in its void-free thermosetting epoxy package. Compliance is verified per EU Directive 2011/65/EU and applies to all standard production lots of MDA3KP33CA.
Can MDA3KP33CA be used for IEC 61000-4-5 Class 4 lightning protection?
Yes, MDA3KP33CA is rated for IEC 61000-4-5 Class 4 secondary lightning protection when tested with a 42 Ω source impedance, as confirmed in the official Microsemi application guidance (RF01243 Rev B). Its 3000 W peak pulse power and 56.2 A IPP capability meet the 4 kV open-circuit/2 kA short-circuit requirement for Class 4. MDA3KP33CA must be mounted with low-inductance layout to preserve clamping performance.
What is the standoff voltage and leakage current specification for MDA3KP33CA?
MDA3KP33CA has a rated reverse standoff voltage (VWM) of 33 V-the maximum continuous DC or peak AC voltage it blocks without significant conduction. At this voltage and 25 °C, its maximum standby current (ID) is 2 µA, ensuring negligible power loss and no interference with sensitive monitoring circuits. This low leakage is maintained across the full –55 °C to +150 °C operating range.
MDA3KP33CA 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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 56.2A
- 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:
- -
MDA3KP33CA FAQ
1.How can I place an order for MDA3KP33CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP33CA 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 MDA3KP33CA reliable?
The price and inventory of MDA3KP33CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP33CA is usually 5 days.
3.What payment methods are accepted for MDA3KP33CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP33CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP33CA?
MDA3KP33CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP33CA 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 MDA3KP33CA?
For technical support, including MDA3KP33CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP33CA requirements.
6.How does Aetrix verify that MDA3KP33CA is sourced from the original manufacturer or authorized distributors?
All MDA3KP33CA 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 MDA3KP33CA meets industry standards.
7.What is the process for return or replacement of MDA3KP33CA?
All MDA3KP33CA units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP33CA, 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 MDA3KP33CA part is unused and in its original packaging.
Return procedure for MDA3KP33CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP33CA Tags
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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