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Microchip Technology MDA3KP8.5AE3
- Part No.:
- MDA3KP8.5AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MDA3KP8.5AE3.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:8,305
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Product details
Overview
MDA3KP8.5AE3 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 8.5 V reverse standoff voltage (VWM), 9.44–10.4 V breakdown voltage (V(BR)), 14.4 V maximum clamping voltage (VC) at 208.4 A peak pulse current, and operates from –55 °C to +150 °C.
For engineers reviewing the MDA3KP8.5AE3 datasheet, MDA3KP8.5AE3 pinout, MDA3KP8.5AE3 application, or MDA3KP8.5AE3 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, standoff voltage margin relative to system DC bus, RoHS-compliant matte-tin termination, and MIL-PRF-19500 upscreening eligibility for aerospace-grade reliability.
Technical Context
The MDA3KP8.5AE3 is a single-channel, unidirectional TVS diode optimized for fast-clamping response (<100 ps rise time) against high-energy transients. Its silicon avalanche structure delivers precise breakdown at 9.44–10.4 V with ≤25 µA standby current at 8.5 V, enabling robust overvoltage hold-off during normal operation.
It meets IEC61000-4-2 (ESD), IEC61000-4-4 (EFT), and IEC61000-4-5 (lightning surge with 2 Ω, 12 Ω, and 42 Ω source impedances) across Class 1–4 per specification. The device is rated for 3000 W peak pulse power at 10/1000 µs and undergoes 100% surge testing per lot.
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 @ 1 mA - Ensures predictable avalanche initiation within tight tolerance for reliable clamping onset |
| VC @ IPP | 14.4 V @ 208.4 A - Limits downstream voltage stress during worst-case 10/1000 µs surge events |
| ID @ VWM | ≤25 µA - Minimizes leakage-induced power loss and thermal drift in high-impedance bias networks |
| PPP | 3000 W @ 10/1000 µs - Sustains high-energy transients common in motor drives and telecom power supplies |
| TJ/TSTG | –55 °C to +150 °C - Supports operation in extended-temperature industrial and avionics environments |
| RoHS | e3 - Matte-tin termination compliant with JEDEC J-STD-020B Level 1 moisture sensitivity, no dry pack required |
Pinout & Package
MDA3KP8.5AE3 uses a 2-pin DO-214AB (SMC) surface-mount package with void-free UL94V-0 epoxy body, tin-lead or matte-tin plating, and polarity defined by a dot marking indicating Pin 1 as cathode. Weight ≈5 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line; conducts during overvoltage to shunt current to ground/reference rail |
| Pin 2 | Anode | Connected to system ground or low-impedance return path; completes clamping loop during transient |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power | Enables protection of 24 V/48 V industrial buses against IEC61000-4-5 Class 4 surges without derating |
| Clamping time <100 ps | Prevents sub-nanosecond ESD events from damaging sensitive analog front-ends or communication ICs |
| MIL-PRF-19500 upscreening option | Supports qualification for space-grade and military platforms requiring wafer/lot traceability and 3σ ID screening |
| Level 1 moisture sensitivity | Eliminates baking requirements prior to reflow, reducing manufacturing cost and PCB warpage risk |
| Unidirectional configuration | Optimized for DC-biased lines where reverse conduction must be blocked during normal operation |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensing circuits in 48 V BLDC inverters exposed to inductive switching spikes. IC Role / Device Role / Timing Role: Primary clamping element placed across DC-link or signal inputs to limit transient overvoltage before it reaches control ICs. Use Value: Clamps 208.4 A surges to ≤14.4 V, preventing latch-up or oxide breakdown in isolated gate drivers operating at 15 V logic rails. | Use Scenario: Input-stage surge suppression on -48 V telecom rectifier outputs subject to lightning-induced coupling. IC Role / Device Role / Timing Role: Unidirectional TVS connected between output rail and chassis ground to absorb differential-mode surges. Use Value: Withstands 3000 W 10/1000 µs pulses while maintaining ≤25 µA leakage at nominal -48 V, avoiding false trips in negative-rail systems. |
| Railway Signaling Interfaces | Avionics Power Distribution Units |
Use Scenario: Protection of 24 V sensor interface lines in EN 50121-4-compliant signaling cabinets near traction equipment. IC Role / Device Role / Timing Role: Standoff-rated TVS placed at connector entry point to divert induced RF and switching noise. Use Value: 8.5 V VWM provides ≥15% margin above 24 V nominal, ensuring stable blocking during brownout conditions while clamping at 14.4 V. | Use Scenario: Secondary surge protection on 28 V DC distribution branches feeding flight-critical avionics modules. IC Role / Device Role / Timing Role: High-reliability TVS selected for MIL-PRF-19500 screening to meet DO-160 Section 22 lightning requirements. Use Value: Validated for Class 2/3/4 IEC61000-4-5 with 2 Ω/12 Ω/42 Ω source impedance, enabling single-device compliance across multiple test profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.5A | 600 W PPP rating, same VWM and VC, but lower IPP (92.6 A vs. 208.4 A) | Limited to lower-energy surges; unsuitable for IEC61000-4-5 Class 3/4 with 42 Ω source | Select MDA3KP8.5AE3 when 3000 W clamping capacity is required for high-impedance surge sources |
| 1.5KE8.5A | Through-hole TO-218 package, 3000 W PPP, but higher junction-to-ambient thermal resistance and no RoHS e3 marking | Not suitable for automated SMT assembly; lacks moisture sensitivity Level 1 compliance | Choose MDA3KP8.5AE3 for surface-mount production, high-volume reflow, and RoHS-constrained programs |
Compared with SMBJ8.5A and 1.5KE8.5A, MDA3KP8.5AE3 uniquely combines 3000 W SMT packaging, e3 RoHS compliance, Level 1 moisture rating, and MIL-PRF-19500 upscreening readiness-making it the only option qualified for high-reliability, high-surge, automated-manufacturing environments.
Availability
MDA3KP8.5AE3 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, railway signaling interfaces, and avionics power distribution units requiring stable component supply across long product lifecycles.
Supply support for MDA3KP8.5AE3 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 SMT packages, targeting applications where failure due to voltage transients poses safety-critical or mission-critical risk.
FAQ
What is the clamping voltage of MDA3KP8.5AE3 at its rated peak pulse current?
The MDA3KP8.5AE3 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 measured per Figure 2 in the official datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MDA3KP8.5AE3 maintains this clamping performance across its full operating temperature range.
Is MDA3KP8.5AE3 suitable for bidirectional signal line protection?
No, MDA3KP8.5AE3 is unidirectional and intended for DC-biased lines where reverse conduction must be blocked. Its part number suffix "A" (not "C") confirms unidirectional polarity. For bidirectional protection-such as AC-coupled data lines or symmetrical bus interfaces-the MDA3KP8.5CE3 variant must be used instead. The MDA3KP8.5AE3 will not clamp negative-going transients beyond its forward voltage drop (~4.0 V).
Does MDA3KP8.5AE3 require pre-reflow baking before assembly?
No, MDA3KP8.5AE3 is rated IPC/JEDEC J-STD-020B Level 1 for moisture sensitivity, meaning it may be stored and assembled without dry-packaging or baking. Its void-free thermosetting epoxy body and matte-tin termination ensure robust solderability after standard factory handling. This eliminates process steps and reduces risk of PCB warpage compared to higher-level MS ratings.
Can MDA3KP8.5AE3 be used for IEC61000-4-5 Class 4 lightning surge protection?
Yes, MDA3KP8.5AE3 is validated for IEC61000-4-5 Class 4 secondary lightning protection with 42 Ω source impedance, as explicitly stated in the Applications/Benefits section of the datasheet. Its 3000 W peak pulse power rating and 14.4 V clamping voltage enable compliance when applied with appropriate layout practices-including short traces, low-inductance grounding, and proper decoupling-on 8.5 V or higher nominal systems.
What does the "e3" suffix in MDA3KP8.5AE3 indicate?
Per the part nomenclature on page 2 of the datasheet, the "e3" suffix in MDA3KP8.5AE3 denotes RoHS compliance with matte-tin termination, meeting JEDEC J-STD-020B Level 1 moisture sensitivity. It replaces legacy tin-lead plating while maintaining solderability per MIL-STD-750 Method 2026. This distinguishes MDA3KP8.5AE3 from non-RoHS variants marked "MA" or "MX", and confirms suitability for environmentally regulated production programs.
MDA3KP8.5AE3 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:
- -
MDA3KP8.5AE3 FAQ
1.How can I place an order for MDA3KP8.5AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MDA3KP8.5AE3 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 MDA3KP8.5AE3 reliable?
The price and inventory of MDA3KP8.5AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MDA3KP8.5AE3 is usually 5 days.
3.What payment methods are accepted for MDA3KP8.5AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MDA3KP8.5AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MDA3KP8.5AE3?
MDA3KP8.5AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MDA3KP8.5AE3 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 MDA3KP8.5AE3?
For technical support, including MDA3KP8.5AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MDA3KP8.5AE3 requirements.
6.How does Aetrix verify that MDA3KP8.5AE3 is sourced from the original manufacturer or authorized distributors?
All MDA3KP8.5AE3 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 MDA3KP8.5AE3 meets industry standards.
7.What is the process for return or replacement of MDA3KP8.5AE3?
All MDA3KP8.5AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MDA3KP8.5AE3, 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 MDA3KP8.5AE3 part is unused and in its original packaging.
Return procedure for MDA3KP8.5AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MDA3KP8.5AE3 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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