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Microchip Technology MADA3KP33A
- Part No.:
- MADA3KP33A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MADA3KP33A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,102
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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 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 from −55 °C to +150 °C.
For engineers reviewing the MDA3KP33A datasheet, MDA3KP33A pinout, MDA3KP33A application, or MDA3KP33A equivalent, this page delivers verified electrical parameters, IEC61000-4-2/4-4/4-5 compliance context, package dimensions, and real-world protection use cases - all specific to the MDA3KP33A unidirectional TVS array.
Technical Context
The MDA3KP33A is a single-channel, unidirectional TVS diode optimized for fast clamping of high-energy transients with <100 ps response time. It meets IEC61000-4-5 Class 1–4 secondary lightning protection requirements using 42 Ω, 12 Ω, and 2 Ω source impedances, and supports ESD immunity per IEC61000-4-2 up to ±30 kV contact discharge.
Its 3000 W peak pulse power rating (10/1000 µs waveform) is derated above 25 °C per Figure 3, and it undergoes full lot surge testing with 3σ screening on standby current (ID ≤ 2 µA at VWM). Polarity is defined by odd-numbered pins as cathodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous operating voltage before clamping begins; matches 24 V DC systems with safety margin. |
| V(BR) min/max | 36.7–40.6 V - Breakdown occurs within this range at 1 mA; ensures reliable turn-on without premature conduction. |
| VC @ IPP | 53.3 V at 56.2 A - Clamping voltage during worst-case 10/1000 µs surge; limits downstream voltage stress. |
| IPP | 56.2 A - Peak surge current supported at rated clamping voltage; defines protection capacity for IEC61000-4-5 Level 4. |
| ID @ VWM | ≤2 µA - Ultra-low leakage at working voltage; prevents power loss or false triggering in high-impedance circuits. |
| TJ/TSTG | −55 to +150 °C - Extended thermal range enables deployment in automotive engine bays and industrial motor drives. |
Pinout & Package
MDA3KP33A uses a 3-pin SMC (DO-214AB) surface-mount package with void-free UL94V-0 epoxy body, matte-tin plating, and polarity marked by a dot indicating Pin 1 (cathode). Pin 1 and Pin 3 are cathodes; Pin 2 is anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; clamps positive transients to ground when voltage exceeds V(BR). |
| Pin 2 | Anode | Common reference node (typically system ground); completes conduction path during overvoltage events. |
| Pin 3 | Cathode | Redundant cathode terminal for mechanical stability and low-inductance layout; electrically tied to Pin 1 internally. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Supports IEC61000-4-5 Class 4 surges (42 Ω source) without failure; eliminates need for multi-stage protection in many designs. |
| Unidirectional construction | Protects DC-biased lines only against positive transients; avoids reverse conduction issues in polarized power rails. |
| Moisture sensitivity Level 1 | No dry pack or bake-out required before reflow; simplifies manufacturing and reduces assembly cost. |
| MIL-PRF-19500 upscreening option | Enables qualification for aerospace and defense applications requiring lot traceability and extended reliability screening. |
Applications
| Industrial Motor Drives | Telecom Power Feeds |
|---|---|
Use Scenario: Protection of 24 V DC control inputs against switching transients from relay coils and contactors. IC Role / Device Role / Timing Role: TVS array clamps induced spikes before they reach PLC input circuitry or microcontroller GPIOs. Use Value: Prevents latch-up or permanent damage during field maintenance or load switching, extending system uptime. | Use Scenario: Surge suppression on −48 V telecom power distribution boards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end clamp limiting voltage excursion to <53.3 V during 10/1000 µs IEC61000-4-5 surges. Use Value: Maintains power integrity across multiple shelf units without requiring additional MOVs or GDTs. |
| Automotive Body Control Modules | Renewable Energy Inverters |
Use Scenario: Input protection for LIN bus transceivers connected to battery-supplied sensors in engine compartments. IC Role / Device Role / Timing Role: Fast-response TVS absorbs ESD events (IEC61000-4-2 ±30 kV) and load-dump energy. Use Value: Ensures communication continuity after repeated electrostatic discharges in humid environments. | Use Scenario: DC-link surge protection in solar string inverters subjected to grid-switching transients and nearby lightning strikes. IC Role / Device Role / Timing Role: Unidirectional clamp on PV-side DC bus, coordinated with upstream fusing and downstream filtering. Use Value: Reduces field failure rate by preventing gate oxide breakdown in IGBT drivers during surge 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 |
|---|---|---|---|
| SMBJ33A | 600 W rating (vs. 3000 W); same VWM and package but lower IPP (32.4 A vs. 56.2 A). | Not suitable for IEC61000-4-5 Class 4; limited to Class 2/3 or ESD/EFT-only roles. | Select SMBJ33A only if system-level surge testing confirms lower energy requirements and space constraints prohibit SMC footprint. |
| SMCJ33A | 1500 W rating; identical SMC package and pinout, but lower PPP and VC (48.4 V at 31 A). | Meets IEC61000-4-5 Class 3 with 42 Ω source, but fails Class 4; requires design validation for marginal surge margins. | Choose SMCJ33A where cost sensitivity outweighs need for full Class 4 compliance and thermal margin is constrained. |
Compared with SMBJ33A and SMCJ33A, the MDA3KP33A delivers 2× and 2.5× higher peak pulse power respectively, enabling single-device Class 4 lightning protection without parallel devices or layout compromises - critical for high-reliability industrial and telecom infrastructure.
Availability
MDA3KP33A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, automotive body control modules, and renewable energy inverters 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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The MDA3KP series was developed to deliver MIL-PRF-19500-qualified transient suppression for mission-critical power interfaces where failure is not an option - especially in harsh-environment DC systems.
FAQ
What is the clamping voltage of 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 measured per Figure 2 in the official RF01243 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Is MDA3KP33A RoHS compliant?
Yes, MDA3KP33A is RoHS compliant, indicated by the "e3" suffix in its full marking per the nomenclature on page 2 of RF01243 Rev B. The device uses annealed matte-tin plating and void-free UL94V-0 epoxy, meeting JEDEC J-STD-020B moisture sensitivity Level 1 without dry pack requirements.
Can MDA3KP33A be used for bidirectional protection?
No, MDA3KP33A is unidirectional only. Bidirectional variants carry a "C" suffix (e.g., MDA3KP33CA). Using MDA3KP33A on AC or bipolar signal lines would result in forward conduction during negative half-cycles, potentially damaging the device or circuit.
What is the standoff voltage rating of MDA3KP33A, and how does it relate to system design?
The MDA3KP33A has a rated reverse standoff voltage (VWM) of 33 V, meaning it remains non-conductive up to this DC or peak AC voltage. Designers select it for 24 V nominal systems where 33 V provides sufficient margin above maximum expected operating voltage while ensuring reliable clamping onset before downstream component ratings are exceeded.
Does MDA3KP33A require derating at elevated temperatures?
Yes, MDA3KP33A must be derated above 25 °C ambient temperature. Its 3000 W peak pulse power rating decreases linearly per the derating curve in Figure 3 of RF01243 Rev B, reaching ~50% capacity at +100 °C junction temperature - a critical consideration for enclosed or high-power-density installations.
MADA3KP33A 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:
- -
MADA3KP33A FAQ
1.How can I place an order for MADA3KP33A through Aetrix?
Please submit a Request for Quotation (RFQ) for MADA3KP33A 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 MADA3KP33A reliable?
The price and inventory of MADA3KP33A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MADA3KP33A is usually 5 days.
3.What payment methods are accepted for MADA3KP33A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MADA3KP33A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MADA3KP33A?
MADA3KP33A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MADA3KP33A 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 MADA3KP33A?
For technical support, including MADA3KP33A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MADA3KP33A requirements.
6.How does Aetrix verify that MADA3KP33A is sourced from the original manufacturer or authorized distributors?
All MADA3KP33A 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 MADA3KP33A meets industry standards.
7.What is the process for return or replacement of MADA3KP33A?
All MADA3KP33A units undergo pre-shipment inspection (PSI). If there is an issue with MADA3KP33A, 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 MADA3KP33A part is unused and in its original packaging.
Return procedure for MADA3KP33A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MADA3KP33A Tags
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