Switching Controllers – Mouser South Africa

.hide-partial { max-height: none; } .show-more { display: none; }

NCP1239 Switching Controllers

onsemi NCP1239 Switching Controllers are fixed-frequency current-mode controllers featuring a high-voltage start-up current source to provide a quick and lossless power-on sequence. This function greatly simplifies the design of the auxiliary supply and the V_CC capacitor. These NCP1239 controllers feature a timer-based fault detection circuitry that ensures a quasi-flat overload detection, independent of the input voltage. Typical applications include AC-DC converters for TVs, set-top boxes, and printers offline adapters for notebooks and netbooks.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 14

Applied Filters:

Number of Outputs

Switching Frequency

Output Voltage

Minimum Operating Temperature

Maximum Operating Temperature

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Topology	Number of Outputs	Switching Frequency	Duty Cycle - Max	Output Voltage	Output Current	Minimum Operating Temperature	Maximum Operating Temperature	Mounting Style	Package/Case	Packaging
Switching Controllers NCP1239B 100KHZ NCP1239BD100R2G onsemi 1: $0.958 1,613In Stock	Mfr. Part No. NCP1239BD100R2G Mouser Part No 863-NCP1239BD100R2G	onsemi	Switching Controllers NCP1239B 100KHZ Learn More about onsemi ncp1239 controllers	Datasheet	1,613In Stock	Cut Tape $0.958 $0.688 $0.622 $0.547 Reel $0.426 View $0.512 $0.491 $0.466 $0.425 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	100 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239D 65KHZ NCP1239DD65R2G onsemi 1: $0.872 2,435In Stock	Mfr. Part No. NCP1239DD65R2G Mouser Part No 863-NCP1239DD65R2G	onsemi	Switching Controllers NCP1239D 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	2,435In Stock	Cut Tape $0.872 $0.688 $0.622 $0.547 Reel $0.426 View $0.512 $0.491 $0.462 $0.414 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239E 65KHZ NCP1239ED65R2G onsemi 1: $0.958 2,490In Stock	Mfr. Part No. NCP1239ED65R2G Mouser Part No 863-NCP1239ED65R2G	onsemi	Switching Controllers NCP1239E 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	2,490In Stock	Cut Tape $0.958 $0.688 $0.622 $0.547 Reel $0.426 View $0.512 $0.491 $0.462 $0.414 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239E 100KHZ NCP1239ED100R2G onsemi 1: $0.958 2,165In Stock	Mfr. Part No. NCP1239ED100R2G Mouser Part No 863-NCP1239ED100R2G	onsemi	Switching Controllers NCP1239E 100KHZ Learn More about onsemi ncp1239 controllers	Datasheet	2,165In Stock	Cut Tape $0.958 $0.688 $0.622 $0.547 View Reel $0.414 $0.512 $0.491 $0.462 $0.414 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	100 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239J 65KHZ NCP1239JD65R2G onsemi 1: $0.949 2,817In Stock NRND	Mfr. Part No. NCP1239JD65R2G Mouser Part No 863-NCP1239JD65R2G NRND	onsemi	Switching Controllers NCP1239J 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	2,817In Stock	Cut Tape $0.949 $0.685 $0.618 $0.544 View Reel $0.412 $0.509 $0.488 $0.459 $0.412 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239C 65KHZ NCP1239CD65R2G onsemi 1: $0.958 2,148In Stock NRND	Mfr. Part No. NCP1239CD65R2G Mouser Part No 863-NCP1239CD65R2G NRND	onsemi	Switching Controllers NCP1239C 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	2,148In Stock	Cut Tape $0.958 $0.688 $0.622 $0.547 View Reel $0.414 $0.512 $0.491 $0.462 $0.414 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239G 100KHZ NCP1239GD100R2G onsemi 1: $0.958 2,162In Stock NRND	Mfr. Part No. NCP1239GD100R2G Mouser Part No 863-NCP1239GD100R2G NRND	onsemi	Switching Controllers NCP1239G 100KHZ Learn More about onsemi ncp1239 controllers	Datasheet	2,162In Stock	Cut Tape $0.958 $0.688 $0.622 $0.547 Reel $0.426 View $0.512 $0.491 $0.462 $0.414 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	100 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239F 65KHZ NCP1239FD65R2G onsemi 1: $0.958 2,295In Stock	Mfr. Part No. NCP1239FD65R2G Mouser Part No 863-NCP1239FD65R2G	onsemi	Switching Controllers NCP1239F 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	2,295In Stock	Cut Tape $0.958 $0.688 $0.622 $0.547 Reel $0.432 View $0.512 $0.491 $0.462 $0.414 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239L 100KHZ NCP1239LD100R2G onsemi 1: $0.958 2,500In Stock	Mfr. Part No. NCP1239LD100R2G Mouser Part No 863-NCP1239LD100R2G	onsemi	Switching Controllers NCP1239L 100KHZ Learn More about onsemi ncp1239 controllers	Datasheet	2,500In Stock	Cut Tape $0.958 $0.693 $0.624 $0.548 Reel $0.454 View $0.512 $0.491 $0.475 $0.443	Min.: 1 Mult.: 1 : 2,500	Flyback		100 kHz	84 %		500 mA		+ 150 C	SMD/SMT	SOIC-7	Reel, Cut Tape
Switching Controllers NCP1239A 65KHZ NCP1239AD65R2G onsemi 1: $0.958 11,981In Stock	Mfr. Part No. NCP1239AD65R2G Mouser Part No 863-NCP1239AD65R2G	onsemi	Switching Controllers NCP1239A 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	11,981In Stock	Cut Tape $0.958 $0.689 $0.62 $0.546 View Reel $0.412 $0.51 $0.489 $0.485 $0.412 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239B 65KHZ NCP1239BD65R2G onsemi 1: $0.968 312In Stock 7,500Expected 2026/12/01	Mfr. Part No. NCP1239BD65R2G Mouser Part No 863-NCP1239BD65R2G	onsemi	Switching Controllers NCP1239B 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	312In Stock 7,500Expected 2026/12/01	Cut Tape $0.968 $0.694 $0.625 $0.55 View Reel $0.413 $0.514 $0.498 $0.413 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239K, 65KHZ NCP1239KD65R2G onsemi 1: $0.979 97In Stock NRND	Mfr. Part No. NCP1239KD65R2G Mouser Part No 863-NCP1239KD65R2G NRND	onsemi	Switching Controllers NCP1239K, 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	97In Stock	Cut Tape $0.979 $0.699 $0.63 $0.554 View Reel $0.418 $0.518 $0.495 $0.492 $0.418 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239I 65KHZ NCP1239ID65R2G onsemi 1: $0.958 2,430In Stock	Mfr. Part No. NCP1239ID65R2G Mouser Part No 863-NCP1239ID65R2G	onsemi	Switching Controllers NCP1239I 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	2,430In Stock	Cut Tape $0.958 $0.684 $0.616 $0.542 View Reel $0.408 $0.506 $0.484 $0.481 $0.408 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel, Cut Tape, MouseReel
Switching Controllers NCP1239H 65KHZ NCP1239HD65R2G onsemi 2,500: $0.432 12,500Factory Stock Available NRND	Mfr. Part No. NCP1239HD65R2G Mouser Part No 863-NCP1239HD65R2G NRND	onsemi	Switching Controllers NCP1239H 65KHZ Learn More about onsemi ncp1239 controllers	Datasheet	12,500Factory Stock Available More Info Available	Reel $0.432	Min.: 2,500 Mult.: 2,500 : 2,500	Flyback	1 Output	65 kHz	84 %	13.5 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOIC-7	Reel

NCP1239 Switching Controllers

Applied Filters:

Customer Service Office

Company

Resources

Support

Share This

NCP1239 Switching Controllers

Applied Filters: