EN
  • EN
  • DE
loading
Mfr. Part No. Qty. Price

No items in the cart

View Cart
Same model may have multiple batches, images only for reference.
K78L03-500R3
Same model may have multiple batches, images only for reference.

K78L03-500R3

Part No K78L03-500R3
Catalog Power Supplies Board Mount DCDC Converters
Description LINEAR REGULATOR REPLACEMENT DC
Sample
Rohs State rohs
Need Help

Products specifications Report Issue?

Category Power Supplies - Board Mount - DC DC Converters
Mfr MORNSUN Science& Technology Ltd.
Series K78Lxx-500R3
Package Bulk
Product Status Active
Type Non-Isolated PoL Module
Number of Outputs 1
Voltage - Input (Min) 4.75V
Voltage - Input (Max) 36V
Voltage - Output 1 3.3V
Current - Output (Max) 500mA
Applications ITE (Commercial)
Temperature Range - Operating -40°C ~ 85°C (With Derating)
Efficiency 80%
Mounting Type Through Hole
Package / Case 3-SIP Module
Size / Dimension 0.39" L x 0.28" W x 0.43" H (10.0mm x 7.2mm x 11.0mm)
Approval Agency CB, CE, cURus
Standard Number 60950-1; 62368-1
Standard Package 374 pcs
MSL Level Not Applicable
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8504.40.9580
Win Source Part Number 1066891-K78L03-500R3
Ultra Librarian 3D Model Ultra Librarian K78L03-500R3 CAD Model

Description

The K78L03-500R3 is a non-isolated PoL (Point of Load) module DC-DC converter.

  • Application: power supply board mount applications for commercial ITE purposes
  • Size: 0.39" L x 0.28" W x 0.43" H (10.0mm x 7.2mm x 11.0mm)
  • Voltage input range: 4.75V to 36V
  • Voltage output: 3.3V
  • Output current: 500mA
  • Efficiency: 80%
  • Temperature range: -40°C to 85°C
  • Approvals: CB, CE, and cURus
  • Manufacturer: MORNSUN Science & Technology Ltd.
  • Package: 374 pieces

You May Also Be Interested in

MPM38111GR-Z Monolithic Power Systems Inc. – Price, Stock & Datasheet
MPM38111GR-Z
Monolithic Power Systems Inc.
DC DC CONVERTER 1.8V 1.2V
Lowest to $4.6363
MPM38222GR-Z Monolithic Power Systems Inc. – Price, Stock & Datasheet
MPM38222GR-Z
Monolithic Power Systems Inc.
DC DC CONVERTER 1.8V 1.2V
Lowest to $3.3264
TPSM33615RDNRTexas Instruments
TPSM33615RDNR
Texas Instruments
3-V TO 36-V INPUT, 1 TO 15-V OUT
Lowest to $11.5212
MPM3680GRE Monolithic Power Systems Inc. – Price, Stock & Datasheet
MPM3680GRE
Monolithic Power Systems Inc.
DC DC CONVERTER 0.65-5V
Lowest to $27.2727
MPM3860GQW-Z Monolithic Power Systems Inc. – Price, Stock & Datasheet
MPM3860GQW-Z
Monolithic Power Systems Inc.
DC DC CONVERTER 1V 6W
Lowest to $5.1904
LTM8057MPY Analog Devices Inc. – Price, Stock & Datasheet
LTM8057MPY
Analog Devices Inc.
DC DC CONVERTER 2.5-12V 1.5W
Lowest to $61.4318
MPM3620AGQV-P Monolithic Power Systems Inc. – Price, Stock & Datasheet
MPM3620AGQV-P
Monolithic Power Systems Inc.
DC DC CONVERTER 0.8-19.9V
Lowest to $2.8512
MPM3820GQV-Z Monolithic Power Systems Inc. – Price, Stock & Datasheet
MPM3820GQV-Z
Monolithic Power Systems Inc.
DC DC CONVERTER 0.6-6V
Lowest to $1.9090
TEN 25-2423 Traco Power
TEN25-2423
Traco Power
DC DC CONVERTER +/-15V 30W
Need more? Email Us

Top Sellers

BAS516 Real Image
BAS516
Nexperia USA Inc.
DIODE GEN PURP 100V 250MA SOD523
Lowest to $0.0214
CY7C68013A-128AXC Real Image
CY7C68013A-128AXC
Cypress Semiconductor Corp
IC MCU USB PERIPH HI SPD 128LQFP
DRV8432DKD Real Image1
DRV8432DKD
Texas Instruments
IC BRIDGE DRIVER PAR 36HSSOP
Lowest to $19.3374
FT4232HL-REEL real image4451
FT4232HL-REEL
FTDI, Future Technology Devices International Ltd
IC USB HS QUAD UART/SYNC 64-LQFP
Lowest to $14.1369
BM04B-GHS-TBT(LF)(SN)(N) label picture
BM04B-GHS-TBT(LF)(SN)(N)
JST Sales America Inc.
CONN HEADER GH TOP 4POS 1.25MM
Lowest to $0.1782
BMI088 real image23913
BMI088
Bosch Sensortec
ACCELEROMETER 16LGA / Accelerometer, Gyroscope, 6 Axis Sensor I2C, SPI Output
Lowest to $11.8797
LM5069MM-2/NOPB real image1604
LM5069MM-2/NOPB
Texas Instruments
IC CTRLR HOT SWAP 48V 10-MSOP
Lowest to $3.5640
EPM3128ATC100-10N real image
EPM3128ATC100-10N
Altera
IC CPLD 128MC 10NS 100TQFP
Lowest to $3.3015
PE4312C-Z label picture
PE4312C-Z
Peregrine Semiconductor
RF ATTENUATOR 31.5DB 50OHM 20QFN
Lowest to $2.2891
TPSM63606RDLR Real Image
TPSM63606RDLR
Texas Instruments
DC DC CONVERTER 1-16V / Non-Isolated PoL Module DC DC Converter 1 Output 1 ~ 16V 6A 3V - 36V Input
Lowest to $13.4125
FT4232HL real image4446
FT4232HL
FTDI, Future Technology Devices International Ltd
IC USB HS QUAD UART/SYNC 64-LQFP
Lowest to $14.1369
BMI160 real image
BMI160
Bosch Sensortec
IMU ACCEL/GYRO I2C/SPI 14LGA / Accelerometer, Gyroscope, 6 Axis Sensor I2C, SPI Output
Lowest to $3.6828
ULN2803ADW Real Image
ULN2803ADW
Texas Instruments
DARLINGTON TRANSISTOR ARRAY | TRANS 8NPN DARL 50V 0.5A 18SO
Lowest to $5.9399
NTA4153NT1G real image4110
NTA4153NT1G
ON Semiconductor
MOSFET N-CH 20V 915MA SOT-416
Lowest to $0.0543
SSD1963QL9 real image6483
SSD1963QL9
Solomon
LCD Display Controller 128-Pin LQFP Tray
Lowest to $7.4300

Pricing & Ordering

Quantity Unit Price Ext. Price
18+ $3.2155 $57.8790
44+ $2.6380 $116.0720
68+ $2.5560 $173.8080
94+ $2.4740 $232.5560
121+ $2.3909 $289.2989
162+ $2.1437 $347.2794
* Prices exclude shipping and taxes. Shipping costs are calculated at checkout.
Estimate Shipping
Enter your destination to get a shipping estimate
*
Availability: 221 pieces
MOQ: 18 pcs
Order Increment : 1 pcs
*Need More Quantity? *Request a Bulk Quantity Quotation?
Ordering Guidelines

Shipping Information

Shipped from HK warehouse
Expected Shipping Date
Ship today if order in (HKT)
Supplier Lead-Time Call for availability
Estimate shipping fee
Enter your destination to get a shipping estimate
Estimate Shipping Fee

Contact Us

*
*
*

FRAUD PREVENTION REMINDERS

Recently, We have discovered that criminals falsely claimed to be WIN SOURCE to commit fraud. Please note that the only official website & email suffix are win-source.group, win-source.net, winsourcectl.com and winsourceelec.com

More details about fraud prevention
About Us
Customer Service
Solutions
Copyright © 2026 WIN SOURCE. All rights reserved.
For detailed contact information and office addresses in our key locations, including Irvine, Munich, Toronto, Singapore, Seoul, Bangalore, Bologna, Yamanashi, Hong Kong, and Mainland China, please visit our website.
Trust Guard Security Scanned
RFQ RFQ RFQ BOM BOM BOM API API API Sell Sell Sell your Excess