You may place an order without registering to Chip Smart.
We strongly suggest you sign in before purchasing as you
can track your order in real time.
For your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and wire transfer.
RFQ (Request for Quotations)It is recommended to request for quotations to get the latest
prices and inventories about the part.
Our sales will reply to
your request by email within 24 hours.
1. You'll receive an order information email in your inbox.
(Please remember to check the spam folder if you didn't hear from us).
2. Since inventories and prices may fluctuate to some
extent, the sales manager is going to reconfirm the order and let you know if there
are any updates.
Shipping starts at $40, but some countries will exceed $40. For
example (South Africa, Brazil, India, Pakistan, Israel, etc.)
The basic freight (for package ≤0.5kg or corresponding volume) depends on the time
zone and country.
Currently, our products are shipped through DHL, FedEx, SF, and UPS.
Delivery TimeOnce the goods are shipped, estimated delivery time depends on the shipping methods you chose:
FedEx International, 5-7 business days.
The following are some common countries' logistic time.
| Parameters | |
|---|---|
| Factory Lead Time | 18 Weeks |
| Lifecycle Status | ACTIVE (Last Updated: 10 hours ago) |
| Contact Plating | Tin |
| Mount | Surface Mount |
| Mounting Type | Surface Mount |
| Package / Case | TO-261-4, TO-261AA |
| Number of Pins | 4 |
| Weight | 250.2mg |
| Transistor Element Material | SILICON |
| Operating Temperature | -55°C~150°C TJ |
| Packaging | Tape & Reel (TR) |
| Published | 1999 |
| JESD-609 Code | e3 |
| Pbfree Code | yes |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Number of Terminations | 4 |
| Termination | SMD/SMT |
| ECCN Code | EAR99 |
| Resistance | 45mOhm |
| Subcategory | FET General Purpose Power |
| Voltage - Rated DC | 30V |
| Technology | MOSFET (Metal Oxide) |
| Terminal Position | DUAL |
| Terminal Form | GULL WING |
| Current Rating | 6.3A |
| Number of Elements | 1 |
| Number of Channels | 1 |
| Power Dissipation-Max | 3W Ta |
| Element Configuration | Single |
| Operating Mode | ENHANCEMENT MODE |
| Power Dissipation | 3W |
| Case Connection | DRAIN |
| Turn On Delay Time | 6 ns |
| FET Type | N-Channel |
| Transistor Application | SWITCHING |
| Rds On (Max) @ Id, Vgs | 45m Ω @ 6.3A, 4.5V |
| Vgs(th) (Max) @ Id | 1V @ 250μA |
| Input Capacitance (Ciss) (Max) @ Vds | 500pF @ 15V |
| Current - Continuous Drain (Id) @ 25°C | 6.3A Ta |
| Gate Charge (Qg) (Max) @ Vgs | 15nC @ 4.5V |
| Rise Time | 10ns |
| Drive Voltage (Max Rds On,Min Rds On) | 2.5V 4.5V |
| Vgs (Max) | ±8V |
| Fall Time (Typ) | 10 ns |
| Turn-Off Delay Time | 30 ns |
| Continuous Drain Current (ID) | 6.3A |
| Threshold Voltage | 670mV |
| Gate to Source Voltage (Vgs) | 8V |
| Drain to Source Breakdown Voltage | 30V |
| Pulsed Drain Current-Max (IDM) | 20A |
| Dual Supply Voltage | 30V |
| Max Junction Temperature (Tj) | 150°C |
| Nominal Vgs | 670 mV |
| Height | 1.8mm |
| Length | 6.5mm |
| Width | 3.56mm |
| Radiation Hardening | No |
| REACH SVHC | No SVHC |
| RoHS Status | ROHS3 Compliant |
| Lead Free | Lead Free |
Onsemi's patented, high cell density, DMOS technology is used to make the FDT439N channel enhancement mode power field-effect transistor. This extremely high-density technique has been specifically designed to reduce on-state resistance and improve switching performance. The FDT439N is ideal for low voltage, low current applications such as laptop computer power management, battery-powered circuits, and DC motor control.
Fast switching speed.
This Device is Pb?Free
6.3 A, 30 V
RDS(on) = 0.045 @ VGS = 4.5 V
RDS(on) = 0.058 @ VGS = 2.5 V
High power and current handling capability in a widely used surface mount package.
Load Switch
Motor Driving
DC/DC Converter
Please send RFQ , we will respond immediately.