Yamato Electric SQ Series Spark Quencher

Manufacturer: Yamato Electric Co., Ltd.
Model: SQ Series

Spark Quencher SQ

Manufactured by Nisshin Seigyoki Kogyo Co., Ltd.

Generally, when switching an inductive load with contacts, a surge voltage occurs due to a sudden change in current (dv/dt), causing contact wear/consumption, and resulting in malfunctions in electronic circuits due to noise.
The Spark Quencher absorbs electromagnetic energy generated from the inductive load, prevents discharge between contacts, and can suppress contact protection and the generation of electromagnetic waves (EMI).

Usage Examples

(a) Highly effective for contact protection and noise generation prevention, and is the most common way to use it. The same usage applies to both DC (Direct Current) circuits and AC (Alternating Current) circuits.
(b) By attaching it to the secondary side of the rectifier, it suppresses rapid voltage rise (dv/dt) and prevents element destruction.
(c) By attaching it to the secondary side of the transformer, it is effective in preventing noise caused by inter-winding capacitance.
(d) Connection for noise prevention caused by motor loads. By using a product wired for three-phase connection, the number of wires can be reduced.

In addition, there are various methods for noise prevention by combining the Spark Quencher with components such as choke coils, varistors, and diodes, so please consider them.

Specifications

Model No.	Operating Voltage AC V	Capacitance µF	Resistance Value Ω	Resistor Rated Power W	Dimensions
Model No.	Operating Voltage AC V	Capacitance µF	Resistance Value Ω	Resistor Rated Power W	Outer Diameter or Width	Total Length
SQ21150 TF ※	250	0.1	150	0.5	6	14
SQ12150 TFL ※	150	0.2	150	0.5	7	16
SQ13150 BF ※	150	0.3	150	0.5	9	20
SQ23150 MF ※	250	0.3	150	1	10.5	21
SQ23150 MM ※	250	0.3	150	1	10.5	21
SQ23150 3F	250	0.3	150	1	19	30
SQ25050 3F ※	250	0.5	50	2	19	30
SQ23150 3FR ※	250	0.3	150	1	21	27
SQ23150 3FC ※	250	0.3	150	1	21	27
SQ23150 3FK	250	0.3	150	1	21	35
SQ23150 3FL ※	250	0.3	150	1	21	27
SQ21150 NF	250	0.1	150	1	16	35
SQ25050 SF	250	0.5	50	2	16	37
SQ53033 NP	550	0.3	33	4	25	55
SQ53033 3P	550	0.3	33	4	30	65
Material
Remarks / Notes		The models listed are representative examples. Please inquire as many specification models are available.
Remarks / Notes		Models marked with ※ are also TÜV certified. Please check the manufacturer’s catalog as the shape and dimensions differ from the standard products.