Resistor---Wildexco Techlogy

電阻型錄 > 金屬皮膜熔斷 > FR 系列

FR 系列

FUSIBLE METAL FILM RESISTORS

FLAME-PROOF TYPE
FR SERIES

INTRODUCTION

These Fusible Resistors contain both functions as being resistor in normal condition and turned into fuse while abnormal current comes in. The FR series Fusible Metal Film Resistors are manufactured by high vacuum sputtering deposit metal film on high thermal conductivity and specific gravity ceramic rods, and are coated with multilayers of green color flameproof lacquer.

GENERAL SPECIFICATIONS

TPYE	DIMENSION (mm)				POWER RATING	MAXIMUM WORKING VOLTAGE	MAXIMUM OVERLOAD VOLTAGE	RESISTANCE RANGE
TPYE	L	D	H	d( ± 0.05)	POWER RATING	MAXIMUM WORKING VOLTAGE	MAXIMUM OVERLOAD VOLTAGE	± 2%(G)	± 5%(J)
FR-25	6.0 ± 0.2	2.3 ± 0.3	28.0 ± 2	0.5	1/4W	250	300	4.7 Ω -1K	2.2 Ω -1K
FR-50	9.0 ± 0.5	3.2 ± 0.3	26.0 ± 2	0.6	1/2W	250	400	4.7 Ω - 1K	2.2 Ω - 1K
FR-100	11.0 ± 0.5	4.5 ± 0.5	35.0 ± 2	0.8	1W	300	500	4.7 Ω - 1K	0.27 Ω - 1K
FR-200	15.0 ± 0.5	5.0 ± 0.5	32.0 ± 2	0.8	2W	350	500	4.7 Ω - 1K	0.33 Ω - 1K
FR-300S	15.0 ± 0.5	5.0 ± 0.5	32.0 ± 2	0.8	3WS	500	500	4.7 Ω - 1K	0.33 Ω - 1K
FR-300	17.0 ± 0.5	6.0 ± 0.5	32.0 ± 2	0.8	3W	500	500	4.7 Ω -1K	0.33 Ω -1K

Other resistance value on request

CHARACTERISTICS

POWER

Themperature Coefficient	± 100 PPM Type 350 Max
Insulation Resistance	10,000 M Ω Min
Load Life (1,000 hours)	± 5% + 0.05 Ω Max
Short-time Overload	± 2% + 0.05 Ω Max
Temperature Cycling	± 1% + 0.05 Ω Max
Moisture Resistance	± 5% + 0.05 Ω Max
Shock and Vibration	± 1% + 0.05 Ω Max
Effect of Soldering	± 1% + 0.05 Ω Max

POWER	Fusing Time
POWER	Maximum
16 x Wattage	1 Min.
20	40 Sec.
24	30 Sec.
28	20 Sec.
32	15 Sec.

NOTE :
After voltaged the variable rate of resistance in excess (over) 100 times is open.
Operating Temper Range - 30oC~155oC

DIMENSIONS	DERATING CURVE

FUSING CHARACTERISTICS

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