high voltage metal glaze resistors including TyoHM RT1/4W4M7JT/B suitable for computers and telecom systems

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Product Description

Metal Glaze High Voltage Resistors

High voltage resistors designed for consumer electronics, computers, telecommunications, and control instruments. These resistors feature a metal glaze element and are available in various wattages, resistances, and tolerances. They are RoHS & Halogen Free Compliant.

Product Attributes

Type: RT
Certifications: RoHS & Halogen Free Compliant, UL 1676 approval (RT 1/2W, RT 1W, RT 2W series for 960K ~12M)
Material: Ceramic Rod (Forsterite imported)
Coating: Light blue flameproof paint (1W, 2W), Light green epoxy paint (1/4W, 1/2W)
Marking: Color coding

Technical Specifications

Type	Rated Wattage	Resistance Range	Max. Permissible Voltage (DC/RMS)	Dimension (D1 x L1 x H3)	Lead Diameter (d0.1)	Operating Temperature Range	Terminal Tensile Load	Resistance Temperature Coefficient	Load Life Change Rate	Moisture-proof Load Life Change Rate	Solder-ability	Resistance to Soldering Heat Change Rate	Nonflammability (1W, 2W)	Pulse Loading Capability
RT 1/4W	1/4W	47K 33M	1600V / 1150V	2.40.5 x 6.4 x 28	0.6	-65175	1/2W:1kg, Others:2.5kg	200ppm/	3%	3%	>95% coverage	1%	N/A	IEC 60065 chapter 14.2a; 50 discharges from a 1 nF capacitor charged to Vmax; 12 discharges/minute (drift R/R2%)
RT 1/2W	1/2W	47K 33M	3500V / 2500V	3.5 x 9 x 28	0.65								N/A
RT 1W	1W	47K 33M	5000V / 3500V	4.5 x 11 x 28	0.8								Shall not get flame (16x rated wattage for 5 min)
RT 2W	2W	47K 33M	10000V / 7000V	5 x 15 x 28	0.8								Shall not get flame (16x rated wattage for 5 min)

Dimensions and Structure

Dimensions (mm)

Type	D 1	L 1	H 3	d 0.1	Resistance Range	Max. Permissible Voltage DC	Max. Permissible Voltage RMS
RT 1/4W	2.4 0.5	6.4	28	0.6	47K 33M	1600V	1150V
RT 1/2W	3.5	9	28	0.65	47K 33M	3500V	2500V
RT 1W	4.5	11	28	0.8	47K 33M	5000V	3500V
RT 2W	5	15	28	0.8	47K 33M	10000V	7000V

Structure

Ceramic Rod: Forsterite imported.
Terminal: Firmly connected, electrically and mechanically, allows easy soldering.
Coating: Light blue flameproof paint (1W, 2W), Light green epoxy paint (1/4W, 1/2W). Resistant to cleaning and industrial solvents. Paint limited within 2mm of lead wires from resistor body.

Electrical Performance

Resistance Temperature Coefficient: Within 200ppm/.
Temperature Cycle: Resistance value change rate within 0.5% after 5 cycles of -65 to 175.
Short Time Over Load: Resistance value change rate within 1% after 2.5x rated voltage for 5 seconds.
Insulation Character: Over 1000M using DC 100V megger.
Voltage Withstanding: No physical damage (arc, char) when applying AC 350V for one minute.
Load Life: Resistance value change rate within 3% after 1000 hours at 70 with rated voltage.
Moisture-proof Load Life: Resistance value change rate within 3% after 500 hours at 40/90-95% RH with rated power. No remarkable change on appearance, marking legible.
Solder-ability: More than 95% of lead wire circumference covered with solder after dipping in 2355 solder for 2 seconds.
Resistance to Soldering Heat: Resistance value change rate within 1% after soldering heat tests (2705 for 101 sec or 35010 for 3.50.5 sec).
Nonflammability (1W, 2W): No flame when applied 16 times rated wattage for 5 min.
Pulse Loading Capability: In accordance with IEC 60065 chapter 14.2a; 50 discharges from a 1 nF capacitor charged to Vmax; 12 discharges/minute (drift R/R2%).

Packaging Specifications

Taping Specifications (mm)

Type	Package	A	B	C	1 D Max	E Max
1/4W	T26	26 +1 -0	50.5	6	0.6	1.2
	T/B	521	50.5	6	0.6	1.2
1/2W	T/B	521	5 0.5	6	0.6	1.2
1W	T/B	631	5 0.5	6	0.6	1.2
2W	T/B	631	10 1	6	0.6	1.2
	T76, R76	761.5	10 1	6	0.6	1.2

Tape in Box (mm)

Type	Package	QTY PER BOX	a	b	c
1/4W	T26	4,000	50	90	255
	T/B	5,000	75	100	255
1/2W	T/B	1,000	75	55	255
1W	T/B	1,000	85	105	260
2W	T/B	1,000	85	105	260
	T76	1,000	106	110	265

Tape & Reel (mm)

Type	Package	QTY PER REEL	A	B	C	D	E	F
1/4W	T/R	5,000	285	310	75	80	295	295
1/2W	T/R	5,000	305	330	75	90	310	310
1W	T/R	2,000	285	310	75	80	295	295
2W	T/R	1,000	285	310	75	80	295	295
	R76	1,000	285	310	90	105	295	295