Switching Controllers – Mouser Puerto Rico

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NCP125x Current-Mode PWM Controllers

onsemi NCP125x Current-Mode PWM Controllers are capable of delivering a rugged and high-performance offline power supply in a tiny TSOP-6 package. With a supply range up to 35V, onsemi NCP125x controller hosts a jittered 65kHz or 100kHz switching circuitry operated in peak current mode control. When the power on the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26kHz. As the power further goes down, the part enters a skip cycle while limiting the peak current.

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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 CURRENTMODE PWM CONTROLLER NCP12510BSN65T1G onsemi 1: $0.60 16,496In Stock	Mfr. Part # NCP12510BSN65T1G Mouser Part # 863-NCP12510BSN65T1G	onsemi	Switching Controllers CURRENTMODE PWM CONTROLLER Learn More about onsemi NCP125x	Datasheet	16,496In Stock	Cut Tape $0.60 $0.438 $0.375 $0.326 View Reel $0.245 $0.303 $0.29 $0.289 $0.245 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	65 kHz	84 %	12 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOT-23-6	Reel, Cut Tape, MouseReel
Switching Controllers CURRENTMODE PWM CONTROLLER NCP12510ASN65T1G onsemi 1: $0.62 2,913In Stock	Mfr. Part # NCP12510ASN65T1G Mouser Part # 863-NCP12510ASN65T1G	onsemi	Switching Controllers CURRENTMODE PWM CONTROLLER Learn More about onsemi NCP125x	Datasheet	2,913In Stock	Cut Tape $0.62 $0.472 $0.40 $0.351 View Reel $0.265 $0.326 $0.313 $0.311 $0.265 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	65 kHz	84 %	12 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOT-23-6	Reel, Cut Tape, MouseReel
Switching Controllers ACDC SWITCH OCP AUTO NCP1250BSN65T1G onsemi 1: $0.69 23,543In Stock	Mfr. Part # NCP1250BSN65T1G Mouser Part # 863-NCP1250BSN65T1G	onsemi	Switching Controllers ACDC SWITCH OCP AUTO Learn More about onsemi NCP125x	Datasheet	23,543In Stock	Cut Tape $0.69 $0.481 $0.431 $0.377 View Reel $0.277 $0.351 $0.335 $0.327 $0.277 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	65 kHz	84 %	7 V	500 mA	- 40 C	+ 125 C	SMD/SMT	TSOP-6	Reel, Cut Tape, MouseReel
Switching Controllers OCP AUTO OVP VCC LATCH NCP1251BSN65T1G onsemi 1: $0.72 6,532In Stock	Mfr. Part # NCP1251BSN65T1G Mouser Part # 863-NCP1251BSN65T1G	onsemi	Switching Controllers OCP AUTO OVP VCC LATCH Learn More about onsemi NCP125x	Datasheet	6,532In Stock	Cut Tape $0.72 $0.517 $0.456 $0.398 Reel $0.301 View $0.37 $0.354 $0.30 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	65 kHz	84 %		500 mA	- 40 C	+ 125 C	SMD/SMT	TSOP-6	Reel, Cut Tape, MouseReel
Switching Controllers NCP1256B 65KHZ NCP1256BSN65T1G onsemi 1: $0.53 4,727In Stock NRND	Mfr. Part # NCP1256BSN65T1G Mouser Part # 863-NCP1256BSN65T1G NRND	onsemi	Switching Controllers NCP1256B 65KHZ Learn More about onsemi NCP125x	Datasheet	4,727In Stock	Cut Tape $0.53 $0.377 $0.34 $0.299 Reel $0.24 View $0.279 $0.268 $0.258 $0.237 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	65 kHz	83 %	12 V	500 mA	- 40 C	+ 125 C	SMD/SMT	SOT-23-6	Reel, Cut Tape, MouseReel
Switching Controllers CURRENT-MODE PWM CONTROLL NCP12510BSN100T1G onsemi 1: $0.65 365In Stock	Mfr. Part # NCP12510BSN100T1G Mouser Part # 863-NCP12510BSN100T1	onsemi	Switching Controllers CURRENT-MODE PWM CONTROLL Learn More about onsemi NCP125x	Datasheet	365In Stock	Cut Tape $0.65 $0.458 $0.409 $0.355 View Reel $0.286 $0.33 $0.314 $0.302 $0.286 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	100 kHz	84 %	12 V	500 mA	- 40 C	+ 125 C	SMD/SMT	TSOP-6	Reel, Cut Tape, MouseReel
Switching Controllers CURRENT-MODE PWM CONTROL NCP12510CSN65T1G onsemi 1: $0.63 4,008In Stock	Mfr. Part # NCP12510CSN65T1G Mouser Part # 863-NCP12510CSN65T1G	onsemi	Switching Controllers CURRENT-MODE PWM CONTROL	Datasheet	4,008In Stock	Cut Tape $0.63 $0.444 $0.396 $0.344 Reel $0.277 View $0.319 $0.304 $0.292 $0.269 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	65 kHz	84 %	12 V	500 mA	- 40 C	+ 125 C	SMD/SMT	TSOP-6	Reel, Cut Tape, MouseReel
Switching Controllers OCP AUTO OVP VCC LATCH NCP1251BSN100T1G onsemi 1: $0.74 1,136In Stock 3,000Expected 11/9/2026	Mfr. Part # NCP1251BSN100T1G Mouser Part # 863-NCP1251BSN100T1G	onsemi	Switching Controllers OCP AUTO OVP VCC LATCH Learn More about onsemi NCP125x	Datasheet	1,136In Stock 3,000Expected 11/9/2026	Cut Tape $0.74 $0.538 $0.49 $0.437 View Reel $0.365 $0.412 $0.396 $0.384 $0.365 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	100 kHz	84 %		500 mA	- 40 C	+ 125 C	SMD/SMT	TSOP-6	Reel, Cut Tape, MouseReel
Switching Controllers PWM Cntlr Crnt Mode NCP1251CSN65T1G onsemi 1: $0.65 3,534In Stock	Mfr. Part # NCP1251CSN65T1G Mouser Part # 863-NCP1251CSN65T1G	onsemi	Switching Controllers PWM Cntlr Crnt Mode Learn More about onsemi NCP125x	Datasheet	3,534In Stock	Cut Tape $0.65 $0.459 $0.412 $0.36 Reel $0.291 View $0.335 $0.32 $0.308 $0.284 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	65 kHz	84 %		500 mA	- 40 C	+ 125 C	SMD/SMT	TSOP-6	Reel, Cut Tape, MouseReel
Switching Controllers Current Mode PWM Offline Controller NCP1253BSN100T1G onsemi 1: $0.65 4,367In Stock	Mfr. Part # NCP1253BSN100T1G Mouser Part # 863-NCP1253BSN100T1G	onsemi	Switching Controllers Current Mode PWM Offline Controller Learn More about onsemi NCP125x	Datasheet	4,367In Stock	Cut Tape $0.65 $0.454 $0.406 $0.353 View Reel $0.254 $0.327 $0.312 $0.299 $0.254 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	100 kHz	84 %	12 V	500 mA	- 40 C	+ 125 C	SMD/SMT	TSOP-6	Reel, Cut Tape, MouseReel
Switching Controllers Current Mode PWM Offline Controller NCP1253BSN65T1G onsemi 1: $0.57 2,951In Stock	Mfr. Part # NCP1253BSN65T1G Mouser Part # 863-NCP1253BSN65T1G	onsemi	Switching Controllers Current Mode PWM Offline Controller Learn More about onsemi NCP125x	Datasheet	2,951In Stock	Cut Tape $0.57 $0.394 $0.352 $0.306 View Reel $0.221 $0.284 $0.271 $0.26 $0.221 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Flyback	1 Output	65 kHz	84 %	12 V	500 mA	- 40 C	+ 150 C	SMD/SMT	TSOP-6	Reel, Cut Tape, MouseReel
Switching Controllers ACDC SWITCH OCP AUTO onsemi NCP1250BP65G NCP1250BP65G onsemi 1: $1.23 A tariff of 17% may be applied if shipping to the United States. 485In Stock	Mfr. Part # NCP1250BP65G Mouser Part # 863-NCP1250BP65G	onsemi	Switching Controllers ACDC SWITCH OCP AUTO Learn More about onsemi NCP125x	Datasheet	485In Stock	$1.23 $0.891 $0.806 $0.712 View $0.668 $0.641 $0.612 $0.595 $0.587 A tariff of 17% may be applied if shipping to the United States.	Min.: 1 Mult.: 1	Flyback	1 Output	65 kHz	84 %	7 V	500 mA	- 40 C	+ 125 C	SMD/SMT		Tube

NCP125x Current-Mode PWM Controllers

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NCP125x Current-Mode PWM Controllers

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