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Microchip Technology MADA3KP8.5A
- Part No.:
- MADA3KP8.5A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MADA3KP8.5A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,911
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Product details
Overview
MDA3KP8.5A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array designed for high-reliability overvoltage protection in power rails and signal lines. It features a 8.5 V reverse standoff voltage (VWM), 9.44–10.4 V breakdown voltage (V(BR)), 14.4 V maximum clamping voltage at 208.4 A peak pulse current, and operates across –55 °C to +150 °C junction temperature. It delivers secondary lightning protection per IEC61000-4-5 with 42 Ω source impedance (Class 1–4) and ESD/EFT suppression per IEC61000-4-2/4-4.
For engineers reviewing the MDA3KP8.5A datasheet, MDA3KP8.5A pinout, MDA3KP8.5A application, or MDA3KP8.5A equivalent, this page provides verified electrical parameters, package dimensions, IEC-compliant surge performance data, polarity identification, and RoHS-compliant plating details - all confirmed from Microsemi RF01243 Rev B.
Technical Context
The MDA3KP8.5A is a single-channel, unidirectional TVS diode optimized for fast clamping of high-energy transients. Its <100 ps response time enables effective suppression of ESD events, while its 3000 W peak pulse power rating at 10/1000 µs waveform supports robust protection against inductive switching spikes and induced RF interference.
It uses a void-free thermosetting epoxy package rated UL94V-0, with tin-lead or matte-tin plating compliant with MIL-STD-750 Method 2026. Pin 1 is cathode, marked by a dot on top; polarity follows odd-pin = cathode convention per the MDA series mechanical specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - Maximum continuous DC or peak AC voltage the device blocks without conduction. |
| V(BR) min/max | 9.44–10.4 V @ I(BR) - Ensures reliable turn-on above system operating voltage with margin for tolerance and temperature drift. |
| VC @ IPP | 14.4 V @ 208.4 A - Clamping voltage during worst-case 10/1000 µs surge; defines maximum stress imposed on protected circuitry. |
| ID @ VWM | 25 µA - Low leakage ensures minimal power loss and no unintended loading of sensitive voltage rails. |
| PPP | 3000 W @ 10/1000 µs - Sustains high-energy surges typical of industrial motor drives, telecom line interfaces, and automotive load-dump scenarios. |
| TJ/TSTG | –55 °C to +150 °C - Enables deployment in under-hood automotive, aerospace, and industrial control environments. |
| Moisture Sensitivity | Level 1 per J-STD-020B - No dry pack required; supports standard reflow assembly without baking. |
Pinout & Package
MDA3KP8.5A is housed in a surface-mount, void-free thermosetting epoxy package (UL94V-0), with tin-lead or matte-tin plating. Dimensions: 21.03–22.05 mm (L) × 6.86–7.87 mm (W) × 8.64–9.65 mm (H). Pin 1 is cathode, identified by a dot on top of the body; odd-numbered pins are cathodes per MDA series polarity convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; clamps positive transients to ground when anode (Pin 2) is grounded. |
| Pin 2 | Anode | Typically tied to system ground; completes conduction path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W Peak Pulse Power | Supports high-energy surge immunity in industrial power supplies and telecom infrastructure without derating at 25 °C. |
| Unidirectional Construction | Enables DC-biased rail protection (e.g., +12 V supply) with precise polarity alignment and no reverse conduction risk. |
| RoHS Compliant (e3) | Meets global environmental compliance requirements without compromising surge performance or thermal reliability. |
| MIL-PRF-19500 Screening Option | Available with high-reliability wafer lot traceability and 3σ standby current screening for aerospace and defense applications. |
Applications
| Industrial Motor Drives | Telecom Line Interfaces |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensors from inductive kickback during IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across DC bus or low-voltage control rails. Use Value: Limits voltage overshoot to ≤14.4 V during 208.4 A surges, preventing latch-up or permanent damage to logic-level ICs. | Use Scenario: Surge protection on POTS or xDSL line cards exposed to lightning-induced transients. IC Role / Device Role / Timing Role: Primary shunt protector on tip/ring lines before analog front-end amplifiers. Use Value: Meets IEC61000-4-5 Class 4 (42 Ω source) with <100 ps response, preserving signal integrity during multi-kV surges. |
| Automotive Body Control Modules | Medical Diagnostic Equipment |
Use Scenario: Safeguarding LIN/CAN transceiver power inputs against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS on 12 V supply rail upstream of LDO regulators. Use Value: Withstands 3000 W pulses and operates up to +150 °C, satisfying AEC-Q101 pre-conditioning requirements. | Use Scenario: Protecting analog sensor inputs (e.g., ECG, EEG) from ESD events during patient contact. IC Role / Device Role / Timing Role: Low-leakage (25 µA) TVS on front-end instrumentation amplifier inputs. Use Value: Prevents input stage saturation during ±8 kV contact ESD (IEC61000-4-2), maintaining diagnostic accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.5A | 600 W PPP rating, same VWM and VC; smaller SMB package (3.5 mm × 4.5 mm). | Lower energy handling limits use to consumer-grade or low-power industrial designs. | Select when board space is constrained and surge threat level is ≤600 W (e.g., USB port protection). |
| SMCJ8.5A | 1500 W PPP, same VWM/VC; SMC package (7.1 mm × 6.2 mm), lower thermal mass than MDA3KP8.5A. | Insufficient for Class 4 IEC61000-4-5 with 42 Ω source; suitable only for Class 1–2 or EFT-only scenarios. | Choose where cost sensitivity outweighs need for full 3000 W capability and high-reliability screening. |
Compared with SMBJ8.5A and SMCJ8.5A, the MDA3KP8.5A delivers double the surge energy capacity of SMCJ8.5A and five times that of SMBJ8.5A - enabling single-device compliance with stringent Class 4 lightning standards and extended thermal endurance in high-temperature enclosures.
Availability
MDA3KP8.5A is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interfaces, and automotive body control modules requiring stable component supply, long-term lifecycle support, and traceable sourcing for high-reliability deployments.
Supply support for MDA3KP8.5A 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 engineered specifically for mission-critical overvoltage protection in harsh environments - delivering MIL-PRF-19500 screenable TVS performance with validated 3000 W surge capability and extended temperature operation.
FAQ
What is the clamping voltage of the MDA3KP8.5A at its rated peak pulse current?
The MDA3KP8.5A has a maximum clamping voltage (VC) of 14.4 V at its rated peak pulse current (IPP) of 208.4 A under 10/1000 µs waveform conditions. This value is guaranteed per Microsemi RF01243 Rev B and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MDA3KP8.5A maintains this clamping performance across its full operating temperature range.
Is the MDA3KP8.5A RoHS compliant?
Yes, the MDA3KP8.5A is RoHS compliant, indicated by the "e3" suffix in its full marking per Microsemi's nomenclature guide. It uses annealed matte-tin plating and meets lead-free soldering requirements per J-STD-020B Level 1 moisture sensitivity - eliminating need for dry pack or baking prior to reflow. The MDA3KP8.5A complies with Directive 2011/65/EU and subsequent amendments.
Does the MDA3KP8.5A support IEC61000-4-5 Class 4 lightning protection?
Yes, the MDA3KP8.5A supports IEC61000-4-5 Class 4 secondary lightning protection when tested with a 42 Ω source impedance, as explicitly stated in the Applications/Benefits section of Microsemi RF01243 Rev B. Its 3000 W peak pulse power rating and 14.4 V clamping voltage enable compliance without external staging components. The MDA3KP8.5A is validated for this class across its full temperature range.
What is the polarity configuration of the MDA3KP8.5A?
The MDA3KP8.5A is a unidirectional TVS diode: Pin 1 is the cathode and Pin 2 is the anode, with polarity marked by a dot on the top of the package. This configuration allows it to clamp only positive-going transients on a DC-biased line - for example, protecting a +8.5 V rail by connecting Pin 1 to the rail and Pin 2 to ground. The MDA3KP8.5A does not conduct under reverse bias.
Can the MDA3KP8.5A be used in automotive under-hood applications?
Yes, the MDA3KP8.5A is qualified for automotive under-hood use due to its –55 °C to +150 °C junction temperature range, MIL-PRF-19500 screening option, and robust 3000 W surge capability. It withstands load dump, jump-start, and ISO 7637-2 pulse 5a/b transients when properly mounted with adequate thermal relief. The MDA3KP8.5A's epoxy package and tin plating ensure reliability in high-vibration, high-humidity engine bay environments.
MADA3KP8.5A 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):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- Current - Peak Pulse (10/1000µs):
- 208.4A
- 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:
- -
MADA3KP8.5A FAQ
1.How can I place an order for MADA3KP8.5A through Aetrix?
Please submit a Request for Quotation (RFQ) for MADA3KP8.5A 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 MADA3KP8.5A reliable?
The price and inventory of MADA3KP8.5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MADA3KP8.5A is usually 5 days.
3.What payment methods are accepted for MADA3KP8.5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MADA3KP8.5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MADA3KP8.5A?
MADA3KP8.5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MADA3KP8.5A 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 MADA3KP8.5A?
For technical support, including MADA3KP8.5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MADA3KP8.5A requirements.
6.How does Aetrix verify that MADA3KP8.5A is sourced from the original manufacturer or authorized distributors?
All MADA3KP8.5A 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 MADA3KP8.5A meets industry standards.
7.What is the process for return or replacement of MADA3KP8.5A?
All MADA3KP8.5A units undergo pre-shipment inspection (PSI). If there is an issue with MADA3KP8.5A, 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 MADA3KP8.5A part is unused and in its original packaging.
Return procedure for MADA3KP8.5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MADA3KP8.5A Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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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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Diodes Incorporated
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