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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) - TVS Diodes > MPLAD30KP300AE3
Microchip Technology
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MPLAD30KP300AE3

In Stock 2801 pcs Reference Price(In US Dollars)
1+
$36.6789
200+
$14.1955
500+
$13.6959
1000+
$13.4498
Manufacturer Part Number:
MPLAD30KP300AE3
Manufacturer / Brand
Microchip Technology
Part of Description:
TVS DIODE 300VWM 483VC PLAD
Datasheets:
MPLAD30KP300AE3(1).pdfMPLAD30KP300AE3(2).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 2801 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number MPLAD30KP300AE3
Manufacturer / Brand Microchip Technology
Stock Quantity 2801 pcs Stock
Category Circuit Protection > Transient Voltage Suppressors (TVS) - TVS Diodes
Description TVS DIODE 300VWM 483VC PLAD
Lead Free Status / RoHS Status: ROHS3 Compliant
Voltage - Reverse Standoff (Typ) 300V
Voltage - Clamping (Max) @ Ipp 483V
Voltage - Breakdown (Min) 333V
Unidirectional Channels 1
Type Zener
Supplier Device Package PLAD
Series -
Power Line Protection No
Power - Peak Pulse 30000W (30kW)
Package / Case Nonstandard SMD
Package Bulk
Operating Temperature -55°C ~ 150°C (TJ)
Mounting Type Surface Mount
Current - Peak Pulse (10/1000µs) 62A
Capacitance @ Frequency -
Base Product Number PLAD30
Applications General Purpose

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

Can MPLAD30KP300AE3 be used directly on a 230VAC rectified DC bus or 400V DC input?
MPLAD30KP300AE3 is a 300V reverse-standoff unidirectional TVS, so it fits rails whose normal maximum voltage stays below 300V with margin for tolerance, ripple, and temperature drift. On a rectified 230VAC bus, the peak is already about 325V before surges, so MPLAD30KP300AE3 can start to conduct during normal operation and is not a suitable direct clamp. For 400V DC inputs, a higher-standoff TVS or a different surge architecture such as MOV/GDT plus series impedance is usually a better match.
Do I need a bidirectional device instead of MPLAD30KP300AE3 for AC or reversed-polarity signals?
Yes. MPLAD30KP300AE3 is unidirectional, so it is intended for DC rails or interfaces where polarity is known. For AC or bipolar lines, a bidirectional TVS gives more symmetric behavior on both half-cycles and avoids forward conduction on one polarity. If the line can be connected backward, add reverse-polarity protection or choose a topology that tolerates the expected negative voltage.
How do I decide whether MPLAD30KP300AE3 is the right replacement for a smaller TVS such as Littelfuse SMCJ300A or Bourns SMBJ300A?
MPLAD30KP300AE3 offers much higher surge headroom than SMBJ/SMCJ-class parts, but the board and surge source still need to match its 30kW, 62A 10/1000 µs rating. If the existing design only sees low-energy transients, a smaller TVS may be more compact and economical. If the application is cable-exposed, industrial, or subject to heavier surge energy, MPLAD30KP300AE3 can reduce overstress risk, provided the PCB copper area and thermal path are sized for the pulse current.
What PCB layout practices are needed for MPLAD30KP300AE3 to achieve its clamp performance?
Place MPLAD30KP300AE3 as close as possible to the protected connector or device pin and keep the surge loop short. Use wide copper for both current paths, avoid long narrow traces, and give the return path low inductance so the device can clamp before the surge couples into the load. For high-energy pulses, spread heat into copper pours and use multiple vias if the pad stack allows. A physically distant TVS often clamps too late because trace inductance adds overshoot.
Can MPLAD30KP300AE3 be used alone on long cable interfaces or inductive loads?
MPLAD30KP300AE3 can absorb short, high-current transients, but it does not limit steady follow current or energy from a prolonged fault. On long cable runs or inductive loads, pair it with a fuse, resettable fuse, current-limiting element, or upstream impedance so the surge current decays quickly after clamping. If the environment includes repeated hot-plugging, lightning-induced surges, or motor switching, a coordinated protection stack is usually more robust than a TVS alone.
What should I check before using MPLAD30KP300AE3 in an industrial product with repetitive surges and high ambient temperature?
With MPLAD30KP300AE3, verify the repetitive surge waveform, duty cycle, and board temperature rise rather than relying only on the single-pulse rating. Repetitive events can heat the junction and solder joint even when each pulse is below the 30kW limit. The -55°C to 150°C junction range supports industrial use, but the actual margin depends on PCB copper area, airflow, enclosure temperature, and how often the line is hit by transients. For frequent surges, derate conservatively or move to a protection scheme that shares energy across components.
Is MPLAD30KP300AE3 a good substitute for an MOV like Littelfuse V300LA40A?
MPLAD30KP300AE3 is not a drop-in substitute for a 300VAC MOV such as Littelfuse V300LA40A. TVSs clamp much faster and usually at a tighter voltage, while MOVs generally handle larger mains-energy events and tolerate AC surge environments differently. If the design is on a DC rail and you need a tighter clamp, MPLAD30KP300AE3 may be a better fit. If the design is on mains or has large repetitive line energy, a MOV or a hybrid MOV-plus-TVS approach is often more appropriate.
What migration issues come up when moving to MPLAD30KP300AE3 from a different package or footprint?
MPLAD30KP300AE3 uses a nonstandard PLAD surface-mount package, so footprint compatibility is the first check. Confirm pad dimensions, solder fillet, creepage/clearance, and pick-and-place orientation before reusing an older SMC or SMB layout. Because the surge current is high, thermal coupling to the board matters more than in smaller packages; a mechanically similar footprint does not guarantee the same pulse handling. If the existing footprint was tuned for a lower-power TVS, validate both reflow robustness and surge performance on the actual PCB stack-up.
If MPLAD30KP300AE3 is placed on a board with sensitive downstream electronics, what extra protection is usually needed?
MPLAD30KP300AE3 clamps the voltage spike, but the remaining overshoot from trace inductance and the residual clamping voltage can still exceed the tolerance of very low-voltage ICs. In those cases, add series impedance, a filter, or a second-stage protector closer to the sensitive device. This is common when the protected node feeds an isolated DC-DC converter, a gate driver, or a measurement front end that cannot tolerate hundreds of volts of residual clamp. The TVS works best as the first line of defense at the connector, with downstream filtering handling the remaining energy.

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