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Microchip Technology MXDA3KP8.5A
- Part No.:
- MXDA3KP8.5A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXDA3KP8.5A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,738
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Product details
Overview
MXDA3KP8.5A 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 - used in industrial power supplies and telecom interface protection.
For engineers reviewing the MXDA3KP8.5A datasheet, MXDA3KP8.5A pinout, MXDA3KP8.5A application, or MXDA3KP8.5A equivalent, key selection criteria include clamping performance under 10/1000 µs surge, standoff voltage margin versus system operating voltage, thermal derating above 25 °C, and compliance with IEC61000-4-2/4-4/4-5 secondary lightning standards.
Technical Context
The MXDA3KP8.5A is a single-channel unidirectional TVS diode optimized for fast transient suppression with <100 ps response time and 3000 W peak pulse power rating at 10/1000 µs waveform. Its low 14.4 V clamping voltage at 208.4 A ensures robust protection of downstream MOSFETs, controllers, and communication ICs without exceeding safe voltage thresholds.
It meets MIL-PRF-19500 screening options for high-reliability applications and supports secondary lightning protection per IEC61000-4-5 with 42 Ω, 12 Ω, and 2 Ω source impedances - Class 1–4 depending on impedance, with full surge testing performed per lot and 3σ screening on standby current (ID).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - Maximum continuous DC or peak AC voltage the device blocks without conduction; must exceed system operating voltage by safety margin. |
| V(BR) min–max | 9.44–10.4 V @ I(BR) - Confirmed breakdown range ensures predictable turn-on during transients; guarantees activation before protected circuit damage. |
| VC @ IPP | 14.4 V @ 208.4 A - Clamping voltage under worst-case 10/1000 µs surge; defines upper voltage limit seen by downstream components. |
| ID @ VWM | 25 µA - Low leakage at rated standoff voltage minimizes power loss and avoids false triggering in high-impedance circuits. |
| PPP | 3000 W @ 10/1000 µs - Peak surge energy handling capacity; determines survivability against lightning-induced or inductive switching transients. |
| TJ/TSTG | –55 °C to +150 °C - Wide operating and storage temperature range enables use in automotive engine compartments and industrial outdoor enclosures. |
Pinout & Package
MXDA3KP8.5A uses a 2-pin surface-mount package with void-free UL94V-0 epoxy body and tin-lead or matte-tin plating. Pin 1 is cathode (marked by dot); polarity follows standard unidirectional TVS convention - anode connects to protected line, cathode to ground or lower potential rail.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to system ground or return path; carries surge current during clamping; must be routed with low-inductance trace. |
| Pin 2 | Anode | Connected to protected line (e.g., DC input, RS-485 bus); voltage rise above V(BR) forward-biases device into clamping mode. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Enables protection against severe IEC61000-4-5 lightning surges and high-energy inductive switch-offs without failure. |
| 14.4 V clamping at 208.4 A | Keeps protected ICs within absolute maximum ratings during 10/1000 µs transients - critical for 12 V rail interfaces. |
| –55 °C to +150 °C operation | Supports deployment in harsh environments including industrial motor drives and outdoor telecom base stations. |
| MIL-PRF-19500 screening option | Provides wafer/lot traceability and enhanced reliability validation for aerospace, defense, and mission-critical systems. |
Applications
| Industrial Power Supply Protection | Telecom Interface Protection |
|---|---|
Use Scenario: Protecting 12 V DC input rails in programmable logic controllers (PLCs) against load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp positive-going transients. Use Value: 14.4 V clamping prevents overvoltage damage to upstream DC-DC converters and microcontrollers during 3000 W surges. | Use Scenario: Shielding RS-485 transceivers in building automation networks from EFT and induced RF coupling. IC Role / Device Role / Timing Role: Line-side TVS on A/B differential pair to absorb common-mode surges while preserving signal integrity. Use Value: Sub-100 ps response ensures clamping occurs before transceiver latch-up, meeting IEC61000-4-4 Level 4 immunity requirements. |
| Automotive Body Control Module | Renewable Energy Inverter Control |
Use Scenario: Safeguarding CAN bus power lines in BCMs exposed to ISO 7637-2 pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply feeding CAN transceiver LDOs. Use Value: 8.5 V VWM aligns with nominal 12 V system with margin; 25 µA ID avoids battery drain in sleep mode. | Use Scenario: Protecting gate driver bias rails in solar inverter half-bridges from Miller-induced spikes and transformer ringing. IC Role / Device Role / Timing Role: Local clamping device on isolated 15 V gate supply to limit overshoot during fast switching transitions. Use Value: 3000 W rating withstands repetitive 10/1000 µs surges from parasitic inductance in high-di/dt power stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.5A | 600 W PPP rating, same VWM and V(BR) range, DO-214AC package, higher VC (13.6 V @ 48.2 A) | Lower energy handling limits use to sub-1 kV surge environments; not suitable for IEC61000-4-5 Class 4 with 42 Ω source. | Select SMAJ8.5A only for cost-sensitive, lower-energy applications where PCB space allows larger footprint than MDA's compact 2-pin SMD. |
| SMCJ8.5A | 1500 W PPP rating, same VWM/V(BR), DO-214AB package, VC = 13.6 V @ 110 A | Half the peak power capability of MXDA3KP8.5A; insufficient for full 3000 W lightning test compliance. | Choose SMCJ8.5A when thermal constraints prevent MDA-level power dissipation, or when legacy board layout mandates DO-214AB footprint. |
Compared with SMAJ8.5A and SMCJ8.5A, MXDA3KP8.5A delivers double the surge energy handling of SMCJ8.5A and five times that of SMAJ8.5A - enabling single-device compliance with IEC61000-4-5 Class 4 at 42 Ω, while maintaining identical 8.5 V standoff and low-leakage operation.
Availability
MXDA3KP8.5A is available at Aetrix Electronics and suitable for industrial power supplies, telecom interface protection, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for MXDA3KP8.5A 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 developed to deliver military-grade transient suppression in compact surface-mount packages, targeting applications demanding MIL-PRF-19500 conformance and IEC61000-4-5 secondary lightning immunity.
FAQ
What is the clamping voltage of MXDA3KP8.5A and how is it measured?
The MXDA3KP8.5A has a maximum clamping voltage (VC) of 14.4 V, measured at its peak pulse current (IPP) of 208.4 A under standardized 10/1000 µs surge conditions. This value represents the highest voltage the device allows across its terminals during worst-case transient events, ensuring downstream components remain within safe operating limits. The MXDA3KP8.5A achieves this with sub-100 ps response time, making it effective for ESD, EFT, and lightning-induced surges.
Is MXDA3KP8.5A RoHS compliant?
Yes, MXDA3KP8.5A is RoHS compliant, indicated by the "e3" suffix in its full marking per Microsemi's nomenclature guide. The device uses annealed matte-tin or tin-lead plating compatible with lead-free soldering processes up to 260 °C for 10 seconds, and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack requirement.
Can MXDA3KP8.5A be used for bidirectional protection?
No, MXDA3KP8.5A is unidirectional only. Its part number lacks the "C" suffix required for bidirectional variants (e.g., MXDA3KP8.5CA). Using MXDA3KP8.5A in reverse-biased configurations risks permanent breakdown. For AC or dual-polarity signal lines, select the C-suffix version or pair unidirectional devices back-to-back with appropriate layout isolation.
What is the standoff voltage rating of MXDA3KP8.5A and why does it matter?
The MXDA3KP8.5A has a rated reverse standoff voltage (VWM) of 8.5 V - the maximum continuous voltage it blocks without significant leakage. This value must exceed the peak operating voltage of the protected circuit by at least 10–20 % to avoid false triggering while ensuring reliable clamping onset during transients. For example, it is well-suited for 7–8 V nominal rails in industrial sensors or 12 V systems with adequate margin.
Does MXDA3KP8.5A require derating at elevated temperatures?
Yes, MXDA3KP8.5A requires thermal derating above 25 °C ambient, as shown in Figure 3 of its datasheet. At 100 °C, its peak pulse power drops to approximately 60 % of the 3000 W rating. Designers must apply this curve when sizing heatsinking or estimating surge endurance in high-temperature enclosures such as motor drive cabinets or solar inverters - the MXDA3KP8.5A remains functional up to +150 °C junction temperature but with reduced energy absorption capacity.
MXDA3KP8.5A 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:
- -
MXDA3KP8.5A FAQ
1.How can I place an order for MXDA3KP8.5A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXDA3KP8.5A 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 MXDA3KP8.5A reliable?
The price and inventory of MXDA3KP8.5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXDA3KP8.5A is usually 5 days.
3.What payment methods are accepted for MXDA3KP8.5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXDA3KP8.5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXDA3KP8.5A?
MXDA3KP8.5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXDA3KP8.5A 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 MXDA3KP8.5A?
For technical support, including MXDA3KP8.5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXDA3KP8.5A requirements.
6.How does Aetrix verify that MXDA3KP8.5A is sourced from the original manufacturer or authorized distributors?
All MXDA3KP8.5A 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 MXDA3KP8.5A meets industry standards.
7.What is the process for return or replacement of MXDA3KP8.5A?
All MXDA3KP8.5A units undergo pre-shipment inspection (PSI). If there is an issue with MXDA3KP8.5A, 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 MXDA3KP8.5A part is unused and in its original packaging.
Return procedure for MXDA3KP8.5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXDA3KP8.5A Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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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