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Microchip Technology MADA3KP18AE3
- Part No.:
- MADA3KP18AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MADA3KP18AE3.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:6,865
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Product details
Overview
MADA3KP18AE3 from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 18 V standoff voltage (VWM), 20.0–22.1 V breakdown voltage (V(BR)), and 29.2 V maximum clamping voltage (VC) at 102.8 A peak pulse current (IPP); used for secondary lightning protection per IEC61000-4-5 in telecom power interfaces.
For engineers reviewing the MADA3KP18AE3 datasheet, MADA3KP18AE3 pinout, MADA3KP18AE3 application, or MADA3KP18AE3 equivalent, key selection criteria include standoff voltage matching system DC rail, clamping voltage margin versus IC absolute maximum ratings, surge current capability under 10/1000 µs waveform, and RoHS-compliant matte-tin termination compatibility with lead-free reflow.
Technical Context
The MADA3KP18AE3 operates as a unidirectional avalanche diode-based TVS, triggered when reverse voltage exceeds its 20.0–22.1 V breakdown range at 1 mA test current. It clamps transients to ≤29.2 V at 102.8 A IPP under 10/1000 µs waveform while maintaining <2 µA standby current at 18 V VWM.
Its construction uses void-free UL94V-0 thermosetting epoxy packaging with tin-lead or annealed matte-tin plating, rated for -55°C to +150°C junction temperature and 260°C soldering tolerance. Polarity follows odd-pin cathode convention, and it meets MIL-PRF-19500 high-reliability screening options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18 V - Maximum continuous reverse operating voltage before conduction begins; must exceed peak system DC rail voltage. |
| V(BR) min–max | 20.0–22.1 V @ 1 mA - Confirmed avalanche onset range; defines minimum overvoltage threshold for reliable triggering. |
| VC @ IPP | 29.2 V @ 102.8 A - Clamped voltage during worst-case 10/1000 µs surge; determines protected IC's stress margin. |
| PPP | 3000 W @ 10/1000 µs - Peak pulse power handling capacity; validates robustness against lightning-induced surges. |
| ID @ VWM | <2 µA - Ultra-low leakage at rated standoff; prevents unintended power loss or bias disruption in high-impedance circuits. |
| TJ/TSTG | -55°C to +150°C - Extended thermal operating envelope suitable for industrial and outdoor power electronics enclosures. |
Pinout & Package
Package: Surface-mount DO-214AB (SMC) molded epoxy case, 21.03 × 7.87 × 9.65 mm (L×W×H), UL94V-0 rated, matte-tin plated terminals, polarity marked by dot indicating Pin 1 (cathode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line (e.g., DC input); conducts during overvoltage to shunt surge to ground. |
| Pin 2 | Anode | Connected to system ground reference; completes low-impedance path for transient current dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| 3000 W peak pulse power rating | Validated under standardized 10/1000 µs waveform-enables compliance with IEC61000-4-5 Class 1–4 secondary lightning tests. |
| 29.2 V clamping at 102.8 A IPP | Provides ≥3.8 V margin below typical 33 V absolute max rating of telecom DC-DC controllers, reducing risk of latch-up or damage. |
| RoHS-compliant matte-tin termination (e3) | Ensures compatibility with Pb-free reflow profiles up to 260°C and eliminates intermetallic growth concerns in long-life deployments. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and baking prior to assembly-reduces manufacturing overhead and avoids moisture-induced popcorning. |
Applications
| Telecom DC Power Input Protection | Industrial PLC Analog I/O Protection |
|---|---|
Use Scenario: 48 V DC power feed to remote radio units exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and chassis ground to clamp common-mode transients before they reach DC-DC converter inputs. Use Value: Limits voltage excursion to ≤29.2 V during 102.8 A surge, preserving 33 V-rated controller ICs and meeting IEC61000-4-5 Class 3 (12 Ω source) requirements. | Use Scenario: 24 V analog sensor signal lines in factory automation cabinets subject to relay coil flyback and EFT bursts. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to divert fast-rising transients (<5 ns response) away from precision ADC front-end circuitry. Use Value: Sub-100 ps turn-on time ensures clamping initiates before ESD/EFT energy couples into sensitive op-amp stages, per IEC61000-4-2/4-4. |
| Automotive Body Control Module Power Rail | Renewable Energy Inverter DC Link Protection |
Use Scenario: 12 V battery-supplied BCU subsystem experiencing load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail upstream of LDO regulators and microcontroller VDD pins. Use Value: Withstands 200 A forward surge (IFSM) and maintains <2 µA leakage at 18 V VWM-prevents regulator dropout while enabling stable MCU operation. | Use Scenario: 600 V DC link in solar string inverters where switching noise couples into auxiliary supply rails. IC Role / Device Role / Timing Role: Secondary-level TVS on isolated 24 V control rail, suppressing coupled transients from IGBT gate drive switching edges. Use Value: 3000 W PPP rating supports repeated surge events without degradation, validated per MIL-PRF-19500 lot norm screening on ID. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18A | 600 W PPP rating, same 18 V VWM and 29.2 V VC, but lower 32.4 A IPP; DO-214AA package (smaller footprint). | Not suitable for IEC61000-4-5 Class 3/4 testing; limited to ESD/EFT and low-energy inductive switching. | Select SMBJ18A only when surge energy is constrained to ≤600 W and board space is critical. |
| 1.5KE18A | 1500 W PPP, same VWM/VC, axial-leaded DO-201 package; higher thermal resistance limits repetitive surge duty cycle. | Requires through-hole mounting and additional strain relief; unsuitable for high-vibration environments or automated SMT lines. | Choose 1.5KE18A only for legacy through-hole designs where rework cost outweighs performance trade-off. |
Compared with SMBJ18A and 1.5KE18A, MADA3KP18AE3 delivers double the surge energy handling of SMBJ18A and twice the PPP of 1.5KE18A in an SMT package with verified MIL-PRF-19500 screening-making it the sole option for high-reliability, high-energy IEC61000-4-5 compliant designs requiring RoHS-compliant assembly.
Availability
MADA3KP18AE3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, automotive body control modules, and renewable energy inverters requiring stable component supply across extended product lifecycles.
Supply support for MADA3KP18AE3 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 RF solutions for aerospace, defense, and industrial markets.
The MDA3KP series was designed specifically for mission-critical surge protection in harsh-environment power systems-emphasizing MIL-PRF-19500 screening, wide temperature operation, and repeatable 3000 W transient immunity.
FAQ
What is the clamping voltage of MADA3KP18AE3 at its rated peak pulse current?
MADA3KP18AE3 has a maximum clamping voltage (VC) of 29.2 V at 102.8 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured per IEC61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MADA3KP18AE3 datasheet specifies this as a guaranteed maximum, ensuring design margin for downstream ICs rated up to 33 V absolute maximum.
Is MADA3KP18AE3 RoHS-compliant and what does the 'e3' suffix indicate?
Yes, MADA3KP18AE3 is RoHS-compliant, as confirmed by the 'e3' suffix in its full part number. Per Microsemi's nomenclature guide, 'e3' denotes matte-tin plating that meets EU RoHS Directive 2011/65/EU requirements and is qualified for lead-free reflow up to 260°C. The MADA3KP18AE3 package uses annealed matte-tin terminations per MIL-STD-750 Method 2026, ensuring solderability and intermetallic stability in high-reliability production.
Does MADA3KP18AE3 meet IEC61000-4-5 Class 4 lightning surge requirements?
MADA3KP18AE3 meets IEC61000-4-5 Class 4 secondary lightning protection when tested with a 42 Ω source impedance, as documented in the official Microsemi RF01243 datasheet. Its 3000 W peak pulse power rating and 102.8 A IPP capability satisfy the 4 kV open-circuit/2 kA short-circuit test profile. However, it is not rated for Class 4 under 12 Ω or 2 Ω source impedances-those require lower-VWM variants like MDA3KP6.0CA or MDA3KP9.0A.
What is the standoff voltage (VWM) and why is it critical for MADA3KP18AE3 selection?
The standoff voltage (VWM) of MADA3KP18AE3 is 18 V-the maximum continuous reverse voltage it can block without significant conduction. This parameter is critical because it must exceed the peak operating voltage of the protected line (e.g., 12 V or 24 V DC rails with ripple) to prevent leakage-induced power loss or false triggering. Selecting a VWM too close to nominal rail voltage risks premature conduction; MADA3KP18AE3 provides safe margin for 12 V systems with ±20% tolerance and 24 V systems under transient overvoltage conditions.
How does the MADA3KP18AE3 package differ from standard SMB or SMC packages?
MADA3KP18AE3 uses a proprietary variant of the DO-214AB (SMC) outline with dimensional tolerances aligned to Microsemi's high-reliability mechanical specification: 21.03–22.05 mm length, 6.86–7.87 mm width, and 8.64–9.65 mm height. Unlike generic SMC packages, it features void-free thermosetting epoxy molding per UL94V-0, matte-tin plating qualified to MIL-STD-750 Method 2026, and polarity marking via top-surface dot. These enhancements ensure mechanical robustness and solder joint integrity in extended-temperature, high-vibration applications where standard SMC parts may delaminate or crack.
MADA3KP18AE3 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):
- 18V
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 29.2V
- Current - Peak Pulse (10/1000µs):
- 102.8A
- 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:
- -
MADA3KP18AE3 FAQ
1.How can I place an order for MADA3KP18AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MADA3KP18AE3 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 MADA3KP18AE3 reliable?
The price and inventory of MADA3KP18AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MADA3KP18AE3 is usually 5 days.
3.What payment methods are accepted for MADA3KP18AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MADA3KP18AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MADA3KP18AE3?
MADA3KP18AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MADA3KP18AE3 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 MADA3KP18AE3?
For technical support, including MADA3KP18AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MADA3KP18AE3 requirements.
6.How does Aetrix verify that MADA3KP18AE3 is sourced from the original manufacturer or authorized distributors?
All MADA3KP18AE3 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 MADA3KP18AE3 meets industry standards.
7.What is the process for return or replacement of MADA3KP18AE3?
All MADA3KP18AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MADA3KP18AE3, 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 MADA3KP18AE3 part is unused and in its original packaging.
Return procedure for MADA3KP18AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MADA3KP18AE3 Tags
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