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EC28A/EC28C Ring-Type Encoders

Alps Alpine EC28A and EC28C Ring-Type Encoders are low-profile 28mm encoders. EC28A/EC28C is available with 18 or 30 detents and 15 or 18 pulses. The encoders have a current rating of 10mA, 5V_DC, an operating life of 50,000 cycles, and an operating temperature range of -40°C to +85°C (EC28A) or -40 to +90°C (EC28C). A smooth click sensation during rotation gives an excellent feel to the encoders. Alps Alpine EC28A/EC28C Series Ring Type Encoders applications include automotive HVAC and audio systems and major home appliances.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Series	Mounting Style	Product	Type	Resolution	Technology	Number of Detents	Number of Channels	Termination Style	Output Type	Shaft Type	With Switch	Operating Supply Voltage	Life	Packaging
	Encoders 15Pulses / 30Detent / 16mNm (After Reflow) / 15mm / Reflow EC28C1540403 Alps Alpine 1: $5.24 257In Stock	Mfr. Part # EC28C1540403 Mouser Part # 688-EC28C1540403	Alps Alpine	Encoders 15Pulses / 30Detent / 16mNm (After Reflow) / 15mm / Reflow Learn More about Alps Alpine ec28a ec28c encoders		257In Stock	$5.24 $4.51 $4.22 $3.86 View $3.62 $3.40 $2.68 $2.67	Min.: 1 Mult.: 1			EC28C	PCB Mount	Ring Encoders	Incremental	15 PPR	Mechanical	30 Detent	2 Channel	PC Pin	Quadrature	Ring	Without Switch	5 VDC	50000 Cycles	Tray
	Encoders 18Pulses / 18Detent / 12mNm / 15mm EC28A1850402 Alps Alpine 1: $5.39 A tariff of 30% may be applied if shipping to the United States. 273In Stock	Mfr. Part # EC28A1850402 Mouser Part # 688-EC28A1850402	Alps Alpine	Encoders 18Pulses / 18Detent / 12mNm / 15mm Learn More about Alps Alpine ec28a ec28c encoders	Datasheet	273In Stock	$5.39 $4.65 $4.34 $3.98 View $3.73 $3.11 $2.77 $2.76 A tariff of 30% may be applied if shipping to the United States.	Min.: 1 Mult.: 1			EC28A	PCB Mount	Ring Encoders	Incremental	18 PPR	Mechanical	18 Detent	2 Channel	PC Pin	Quadrature	Ring	Without Switch	5 VDC	50000 Cycles	Tray
	Encoders 5 Volts Through Hole EC28A1520401 Alps Alpine 1: $5.44 64In Stock	Mfr. Part # EC28A1520401 Mouser Part # 688-EC28A1520401	Alps Alpine	Encoders 5 Volts Through Hole Learn More about Alps Alpine ec28a ec28c encoders		64In Stock	$5.44 $4.68 $4.38 $4.02 View $3.76 $3.53 $2.90 $2.76	Min.: 1 Mult.: 1			EC28A	PCB Mount	Magnetic Encoders		15 PPR		30 Detent		Through Hole				5 VDC		Tray
	Encoders 5 Volts Through Hole EC28A1550401 Alps Alpine 1: $5.44 A tariff of 11% may be applied if shipping to the United States. 170In Stock	Mfr. Part # EC28A1550401 Mouser Part # 688-EC28A1550401	Alps Alpine	Encoders 5 Volts Through Hole Learn More about Alps Alpine ec28a ec28c encoders		170In Stock	$5.44 $4.68 $4.38 $3.25 View $3.12 $2.76 A tariff of 11% may be applied if shipping to the United States.	Min.: 1 Mult.: 1			EC28A	PCB Mount	Ring Encoders	Incremental	15 PPR	Mechanical	30 Detent	2 Channel	PC Pin	Quadrature	Ring	Without Switch	5 VDC	50000 Cycles	Tray
	Encoders 5 Volts Through Hole EC28A1560401 Alps Alpine 1: $5.39 A tariff of 11% may be applied if shipping to the United States. 400Expected 12/11/2026	Mfr. Part # EC28A1560401 Mouser Part # 688-EC28A1560401	Alps Alpine	Encoders 5 Volts Through Hole Learn More about Alps Alpine ec28a ec28c encoders	Datasheet	400Expected 12/11/2026	$5.39 $4.65 $4.34 $2.94 View $2.80 $2.76 A tariff of 11% may be applied if shipping to the United States.	Min.: 1 Mult.: 1			EC28A	PCB Mount	Ring Encoders	Incremental	15 PPR	Mechanical	30 Detent	2 Channel	PC Pin	Quadrature	Ring	Without Switch	5 VDC	50000 Cycles	Tray
	Encoders 18Pulses / 18Detent / 20mNm / 15mm EC28A1870401 Alps Alpine 1: $5.59 A tariff of 11% may be applied if shipping to the United States. 400Expected 2/1/2027	Mfr. Part # EC28A1870401 Mouser Part # 688-EC28A1870401	Alps Alpine	Encoders 18Pulses / 18Detent / 20mNm / 15mm Learn More about Alps Alpine ec28a ec28c encoders	Datasheet	400Expected 2/1/2027	$5.59 $4.81 $4.50 $4.12 View $3.86 $3.62 $3.25 $2.76 A tariff of 11% may be applied if shipping to the United States.	Min.: 1 Mult.: 1			EC28A	PCB Mount	Ring Encoders	Incremental	18 PPR	Mechanical	18 Detent	2 Channel	PC Pin	Quadrature	Ring	Without Switch	5 VDC	50000 Cycles	Tray
	Encoders 15Pulses / 30Detent / 20mNm / 25mm (Long shaft) EC28A1560501 Alps Alpine 1: $5.84 A tariff of 11% may be applied if shipping to the United States. Non-Stocked	Mfr. Part # EC28A1560501 Mouser Part # 688-EC28A1560501	Alps Alpine	Encoders 15Pulses / 30Detent / 20mNm / 25mm (Long shaft) Learn More about Alps Alpine ec28a ec28c encoders		Non-Stocked	$5.84 $5.02 $4.70 $4.21 View $3.94 $3.83 $3.52 $3.00 A tariff of 11% may be applied if shipping to the United States.	Min.: 1 Mult.: 1			EC28A						30 Detent								Tray