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Microchip Technology MDA3KP33A
- Part No.:
- MDA3KP33A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP33A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:9,260
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Product details
Overview
MDA3KP33A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array designed for high-reliability secondary lightning and ESD protection in power rails and signal lines. 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 from −55 °C to +150 °C.
For engineers reviewing the MDA3KP33A datasheet, MDA3KP33A pinout, MDA3KP33A application, or MDA3KP33A equivalent, this device is selected for robust surge immunity in telecom power supplies, industrial I/O interfaces, and automotive body control modules where fast response (<100 ps), high surge capability, and MIL-PRF-19500 upscreening options are required.
Technical Context
The MDA3KP33A is a single-channel unidirectional TVS diode optimized for 10/1000 µs waveform transients per IEC61000-4-5. Its clamping action begins at 36.7 V (min V(BR)) and limits line voltage to ≤53.3 V under 56.2 A peak impulse current, delivering 3000 W peak pulse power dissipation in a compact thermoset epoxy package.
It exhibits <100 ps response time from 0 V to V(BR), <2 µA standby current at 33 V, and full surge testing per production lot. Polarity is defined by odd-numbered pins as cathodes, and it complies with IPC/JEDEC J-STD-020B Level 1 moisture sensitivity-no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous DC or peak AC operating voltage before clamping initiates |
| V(BR) min/max | 36.7–40.6 V @ 1 mA - Ensures reliable turn-on margin above system rail while avoiding false triggering |
| VC @ IPP | 53.3 V @ 56.2 A - Clamped voltage during worst-case 10/1000 µs surge; defines protected circuit's max overvoltage stress |
| PPP | 3000 W @ 10/1000 µs - Sustains high-energy surges typical of lightning-induced transients and inductive switching |
| ID @ VWM | ≤2 µA - Negligible leakage at rated standoff, critical for low-power sensor and battery-backed circuits |
| TJ/TSTG | −55 °C to +150 °C - Supports operation in harsh environments including under-hood automotive and industrial motor drives |
Pinout & Package
MDA3KP33A uses a 2-pin surface-mount DO-214AB (SMC) package with void-free UL94V-0 thermosetting epoxy body, matte-tin-plated terminals, and polarity marked by a dot indicating Pin 1 (cathode). Weight ≈5 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts surge current to ground when voltage exceeds V(BR) |
| Pin 2 | Anode | Connected to system ground reference; completes conduction path during transient events |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Enables protection against Class 3/4 secondary lightning per IEC61000-4-5 with 42 Ω source impedance |
| <100 ps response time | Clamps ESD events (IEC61000-4-2) before sensitive ICs experience damage |
| MIL-PRF-19500 upscreening option | Supports high-reliability aerospace and defense applications requiring wafer/lot traceability and 3σ ID screening |
| UL94V-0 epoxy package | Provides flame-retardant mechanical integrity and thermal stability during repeated surge events |
Applications
| Telecom Power Input Protection | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protects 48 V DC power inputs in base station remote radio units from induced lightning surges and load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp surges before they reach DC/DC converters. Use Value: Limits transient voltage to ≤53.3 V at 56.2 A, preserving downstream converter input stage integrity under IEC61000-4-5 Class 4 (42 Ω) stress. | Use Scenario: Shields 24 V digital input channels in programmable logic controllers from field-wiring EFT and inductive kickback. IC Role / Device Role / Timing Role: Standoff-rated TVS on each input channel, grounded via low-inductance path to suppress fast-rising noise. Use Value: Sub-100 ps response prevents latch-up in input buffer ICs during 5 kHz EFT bursts per IEC61000-4-4. |
| Automotive Body Control Module | Medical Imaging Power Rail |
Use Scenario: Safeguards 12 V supply lines feeding microcontrollers and CAN transceivers in BCMs exposed to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, coordinated with upstream fuse and downstream LC filtering. Use Value: 3000 W rating handles Pulse 1 (−150 V/2 Ω) and Pulse 2a (+100 V/50 Ω) without degradation across −40 °C to +125 °C. | Use Scenario: Guards isolated 28 V auxiliary rails in MRI gradient amplifier subsystems from switching transients generated by high-current H-bridge drivers. IC Role / Device Role / Timing Role: Fast-clamping TVS on secondary-side DC bus to prevent gate driver misfiring and MOSFET avalanche failure. Use Value: 53.3 V clamping ensures gate drive ICs remain within absolute maximum ratings during 10/1000 µs transients up to 56.2 A. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | 600 W PPP rating, same VWM and package; lower clamping voltage (53.3 V vs. 53.3 V identical), but only 12.3 A IPP | Suitable for lower-energy ESD/EFT-only use; not rated for IEC61000-4-5 Class 3/4 lightning | Select MDA3KP33A when 3000 W surge handling is mandatory; SMBJ33A suffices for board-level ESD where system-level surge tests are waived. |
| 1.5KE33A | Through-hole DO-201 package, 1500 W PPP, 53.3 V VC, 28.2 A IPP; no MIL-PRF-19500 screening option | Limited to non-SMT legacy designs; lacks surface-mount reliability and moisture resistance (Level 1 vs. unknown) | Choose MDA3KP33A for new SMT designs requiring high-reliability upscreening and 2× the energy handling of 1.5KE33A. |
Compared with SMBJ33A and 1.5KE33A, the MDA3KP33A delivers double the surge energy capacity of the latter and five times that of the former, while supporting high-reliability screening and surface-mount manufacturability essential for modern telecom and industrial platforms.
Availability
MDA3KP33A is available at Aetrix Electronics and suitable for telecom power input protection, industrial PLC digital I/O hardening, and automotive body control module designs requiring stable component supply and long-term lifecycle support.
Supply support for MDA3KP33A 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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The MDA3KP series was developed to deliver military-grade transient suppression in commercial surface-mount form factors, targeting applications demanding MIL-PRF-19500 conformance, wide temperature operation, and repeatable 3000 W surge performance.
FAQ
What is the clamping voltage of the MDA3KP33A at its rated peak pulse current?
The MDA3KP33A has a maximum clamping voltage (VC) of 53.3 V at its rated peak pulse current (IPP) of 56.2 A under 10/1000 µs waveform conditions. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events. The MDA3KP33A maintains this clamping performance consistently due to its fully surge-tested production lots and tight V(BR) distribution (36.7–40.6 V).
Is the MDA3KP33A suitable for bidirectional signal line protection?
No, the MDA3KP33A is unidirectional and intended for DC power rail protection where the anode connects to ground. For bidirectional signal line protection, Microsemi offers the MDA3KP33CA variant with symmetrical clamping in both polarities. Using the MDA3KP33A on AC or bipolar signals risks forward conduction during negative excursions, potentially damaging the device or circuit. Always verify polarity alignment before integrating the MDA3KP33A.
Does the MDA3KP33A require dry pack handling per J-STD-020?
No, the MDA3KP33A is rated IPC/JEDEC J-STD-020B Level 1 for moisture sensitivity, meaning it may be stored and processed indefinitely at ambient conditions without baking or dry pack requirements. This simplifies SMT assembly logistics and eliminates reflow-related delamination risk. The device's void-free UL94V-0 epoxy body contributes to this robust moisture resistance, confirmed in Microsemi's qualification testing per Rev B of RF01243.
Can the MDA3KP33A be used in automotive applications compliant with ISO 7637-2?
Yes, the MDA3KP33A meets key ISO 7637-2 test pulses including Pulse 1 (−150 V/2 Ω) and Pulse 2a (+100 V/50 Ω) due to its 3000 W peak pulse power rating and 53.3 V clamping voltage. Its −55 °C to +150 °C operating range supports under-hood environments, and optional MIL-PRF-19500 screening further validates suitability for automotive safety-critical modules. System-level validation remains necessary per vehicle manufacturer requirements.
What is the standoff voltage tolerance for the MDA3KP33A?
The MDA3KP33A has a 5% tolerance on its rated reverse standoff voltage (VWM), specified as 33 V nominal. This aligns with the "A" suffix in its nomenclature per Microsemi's part numbering scheme (RF01243, Rev B, page 2). The corresponding breakdown voltage range is 36.7–40.6 V, ensuring sufficient margin above VWM while maintaining precise clamping onset-critical for protecting 3.3 V, 5 V, 12 V, 24 V, and 48 V systems without false triggering.
MDA3KP33A 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:
- 8
- Bidirectional Channels:
- -
- 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:
- -
MDA3KP33A FAQ
1.How can I place an order for MDA3KP33A through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP33A 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 MDA3KP33A reliable?
The price and inventory of MDA3KP33A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP33A is usually 5 days.
3.What payment methods are accepted for MDA3KP33A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP33A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP33A?
MDA3KP33A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP33A 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 MDA3KP33A?
For technical support, including MDA3KP33A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP33A requirements.
6.How does Aetrix verify that MDA3KP33A is sourced from the original manufacturer or authorized distributors?
All MDA3KP33A 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 MDA3KP33A meets industry standards.
7.What is the process for return or replacement of MDA3KP33A?
All MDA3KP33A units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP33A, 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 MDA3KP33A part is unused and in its original packaging.
Return procedure for MDA3KP33A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP33A Tags
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