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7W Cement Resistor

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7W Cement Resistor

MOQ： 5000PCS
Price： Negotiable
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Packaging Details	Bulk/Tape
Delivery Time	7 working days
Payment Terms	T/T,Paypal,Western Union,Money gram
Supply Ability	8000,000,000PCS Per Month
Place of Origin	Dongguan,Guangdong,China
Brand Name	UCHI
Certification	UL.VDE.SGS.CTI
Model Number	CR-YA7W220RJ

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Product Specification


Packaging Details	Bulk/Tape	Delivery Time	7 working days
Payment Terms	T/T,Paypal,Western Union,Money gram	Supply Ability	8000,000,000PCS Per Month
Place of Origin	Dongguan,Guangdong,China	Brand Name	UCHI
Certification	UL.VDE.SGS.CTI	Model Number	CR-YA7W220RJ
High Light	non inductive resistor ，wirewound power resistors

7W Cement Resistor

Quick Detail:

1.Small size,resistant to vibration,humidity and heat,good dissipation,low noise and no annual shift in resistance value,low price
2.UCHI is equipped to design and produce custom components to meet many design and reliability demands. Contact us with your specific needs.
3.Delivery:5-7days
4.Conforms to the ROHS standard and the LEAD-FREE non-lead standard.

Description:

1.cement resistors are made by winding resistance wires around non-alkaline ceramic core,which is added with a layer of heat and humidity resistant and non-corrosive protective material.
2.The wire wound resistor is then placed in a square ceramic package sealed with special nonflammable heat-resistant cement.
3.For high resistance value,wires are replaced by metal oxide films.

Applications:

Complete insulation suitable for printed circuit boards,Power supplies ,Voltage dividers ,Motor controllers ,Automotive applications ,Power electronics circuits.

Specifications:

1. General

1.1 Scope

This specification is available for Cement Resistor manufactured by,it accords with RoHS test of Environment related substance requirement.

1.2 Type designation (example)

The type designation shall be in the following form and as specified.

1.3 Rated power

Rated power is maximum power which can be continuously loaded at specified ambient temperature

70℃,as Table-1;however when the ambient temperature exceeds 70℃,rated power should be determined

from the derating curve of Fig.1.

Table-1

Rated power	Maximum working voltage	Maximum overload voltage	Dielectric withstanding voltage	Max Intermittence Overload Voltage
1W	350V	700V	1000V	1500V
2W	350V	700V	1000V	1500V
3W	500V	1000V	1000V	1500V
5W	750V	1500V	1000V	1500V
7W	1000V	1500V	1000V	1500V
10W	1000V	1500V	1000V	1500V
15W	1000V	15000V	1000V	1500V
20W	1000V	1500V	1000V	1500V
30W	1000V	1500V	1000V	1500V
40W	1000V	1500V	1000V	1500V

Figure 1 Power derating curve

Rated ambient temperature: 1W~10W 70℃

15W or more 25℃

Rated ambient temperature: 1W~10W 70℃

15W or more 25℃

1.4 Rated voltage

The rated voltage shall be the D.C. or A.C.(R.M.S. at power frequency) voltage which corresponds

the rated power and the value of which is calculated from the formula below.

E=√(P×R) Where E: Rated voltage(V)

P: Rated power(W)

R: Nominal resistance(Ω)

Operating Temperature Range:-55℃～+250℃

2. Construction

2.1 External dimensions

The dimensions shall be satisfied with [5. External dimensions].

2.2 Structure diagram

The construction of cement resistor shall be as follows:

NO	Item	Material
1	Ceramic core	High alumina ceramic is used.
2	Resistor element	The resistor element shall consist of metal oxide film or Resistance wire (Exemple:CN49W Φ1.0mm) .
3	Terminal	Tinned iron cap.
4	Connection	The lead wire,which is plated with solder,shall be mounted to the caps by welding process.
5	Lead wire t	Soldered or tinned annealed wire.
6	Silicon cement	Silicon resin is used. Accord with UL-94V-0 Nonflammable specification
7	Ceramic case	High thermal conductivity

3. Characteristics

Table-2

Performance

Test methods(Conform to JIS C 5202)

Temperature

Coefficient

Metal Oxide Film:±350PPM/℃

Resistor Wire:±260PPM/℃

Comply with 5.2

R1-R0/R0(T1-T0)×106(PPM/℃)

R0:Resistance value at room temp.( T0).

R1:Resistance value at room temp.plus 100℃ (T1)

Short time

overload

Within ±(2%+0.05Ω).

No evidence of mechanical damage.

Comply with 5.5

Rated power×10 times,5s

But not to exceed maximum overload voltage.

(See table-1)

Insulation

Resistance

103MΩ or more.

Comply with 5.6

Resistor shall be tested at DC 500V

for 60 seconds.

Dielectric

Withstanding

Voltage

No evidence of flashover mechanical damage,arcing

or insulation breakdown.

Comply with 5.7

Resistor shall be tested at AC potential respecticely for 60 seconds.

(See table-1)

Pulse overload

Within ±(2%+0.05Ω)

Comply with 5.8

Rated voltage X 4 times, 10000 cyc.(1s ON, 25s OFF)

But not to exceed maximum pulse voltage.

(See table-1)

Item	Performance	Test methods(Conform to JIS C 5202)
Resistance to soldering heat	Within ±(1%+0.05Ω) No evidence of mechanical damage.	Comply with 6.4 350±10℃, 3±1s After test leave for 0.5h.
Solderability	Covered with new solder by 95% at least.	Comply with 6.5 Test temperature of solder: 255±5℃ Dipping time in solder:3±1 s
Temperature cycle	Within ±(2%+0.05Ω) No evidence of mechanical damage.	Comply with 7.4 Low side:-55℃/30min, Room temp.:10 to 15min High side:80℃/30min, Room temp.:10 to 15min 5 cycles
Load life in humidity	Within ±(5%+0.05Ω)	Comply with 7.9 40±2℃, 90 to 95%RH, 1000h Rated voltage (90 min ON, 30 min OFF)
Load life	Within ±(5%+0.05Ω)	Comply with 7.10 70±3℃, 1000h Rated voltage (90 min ON, 30 min OFF)

4. Indication

(1) Rated Power

(2) Resistance

(3) Tolerance

Sample

5W 100Ω J

5. External dimensions

5.1 CR-L type

Watt	Dimensions(mm)				Resistance Range(Ω)
Watt	L	W	H	Φd±0.05	Wire Wound	Metal Oxide Film
1W	14±1.0	6.5±1.0	6.5±1.0	0.50	0.1Ω~22Ω	25Ω~56KΩ
2W	18±1.0	7.0±1.0	7.0±1.0	0.50	0.1Ω~22Ω	25Ω~56KΩ
3W	22±1.0	8.0±1.0	8.0±1.0	0.68	0.1Ω~47Ω	50Ω~100KΩ
5W	22±1.0	9.5±1.0	9.5±1.0	0.68	0.1Ω~47Ω	50Ω~100KΩ
7W	35±1.5	9.5±1.5	9.5±1.5	0.68	0.5Ω~330Ω	450Ω~100KΩ
10W	48±1.5	9.5±1.5	9.5±1.5	0.68	0.5Ω~450Ω	470Ω~100KΩ
15W	48±1.5	13±1.5	13±1.5	0.68	1Ω~500Ω	510Ω~100KΩ
20W	63±1.5	13±1.5	13±1.5	0.68	1Ω~600Ω	620Ω~100KΩ
30W	75±2.0	19±2.0	17±2.0	0.68	1Ω~600Ω	620Ω~100KΩ
40W	89±2.0	19±2.0	19±2.0	0.68	1Ω~600Ω	620Ω~100KΩ

5.2 CR-M type

Watt	W±1.0	S±1.0	H±1.5	Φd±0.05	P±1.0	Resistance Range(Ω)
Watt	W±1.0	S±1.0	H±1.5	Φd±0.05	P±1.0	Wire Wound	Metal Oxide Film
2W	11.5	7.5	20.5	0.70	4.5	0.1Ω~47Ω	50Ω~100KΩ
3W	12	8.5	25	0.70	4.5	0.1Ω~47Ω	50Ω~100KΩ
5W	13	9.5	25	0.75	4.5	0.1Ω~47Ω	50Ω~100KΩ
7W	13	9.5	38	0.70	4.5	0.5Ω~330Ω	450Ω~100KΩ
10W	13	9.5	52	0.70	4.5	0.5Ω~450Ω	470Ω~100KΩ
10W	16	11.5	36	0.70	4.5	0.5Ω~450Ω	470Ω~100KΩ
15W	13	10	50	0.70	4.5	0.5Ω~450Ω	470Ω~100KΩ
20WS	13	10	50	0.70	4.5	0.5Ω~450Ω	470Ω~100KΩ
20W	20	10	40	0.70	7.0	0.5Ω~450Ω	470Ω~100KΩ

5.3 CR-YB type

Unit:mm

Watt	Dimensions(mm)								Resistance Range(Ω)
Watt	L	P±1.5	W1±1.2	W2±0.2	W3±0.2	H1±1.2	H2±0.2	H3±1.5	Resistance Range(Ω)
15	48±1.5	32.5	12.5	10	2.7	12.5	15	36	1.0-820
20	63±2	44	12.5	10	2.7	12.5	15	36	1.0-1K

5.4 CR-YD type

Watt	Dimensions(mm)								Resistance Range(Ω)
Watt	L	P±1.5	W±1.0	W1±0.2	W2±0.2	H±0.2	H1±0.2	H2±1.5	Resistance Range(Ω)
3	24±1.0	12	9.5	7.5	1.6	9.5	25	39	0.5-150
5	27±1.0	15	9.5	7.5	1.6	9.5	25	39	0.5-220
7	35±1.5	22.5	9.5	7.5	1.6	9.5	25	39	1-470
10	48±1.5	34	9.5	7.5	1.6	9.5	25	39	1-680
15	48±1.5	32.5	12.5	10	3	12.5	30	47.5	1-820
20	63±2.0	44	12.5	10	3	12.5	30	47.5	1-1K

5.5 CR-YA type

Watt	Dimensions(mm)								Resistance Range(Ω)
Watt	L	P±1.5	W1±1.0	W2±0.2	W3±0.2	H1±0.2	H2±0.2	H3±0.2	Resistance Range(Ω)
3	24±1.0	12	9.5	5.3	0.9	9.5	10	25.5	0.5-150
5	27±1.0	15	9.5	5.3	0.9	9.5	10	25.5	0.5-220
7	35±1.5	22.5	9.5	5.3	0.9	9.5	10	25.5	1-470
10	48±1.5	34	9.5	5.3	0.9	9.5	10	25.5	1-680

5.6 CR-YC type

Watt	Dimensions(mm)								Resistance Range(Ω)
Watt	L	P±1.5	W1±1.0	W2±0.2	W3±0.2	H1±1	H2±0.5	H3±1.5	Resistance Range(Ω)
3	24±1.0	12	9.5	7.3	1.6	9.5	10	25	0.5-150
5	27±1.0	15	9.5	7.3	1.6	9.5	10	25	0.5-220
7	35±1.5	22.5	9.5	7.3	1.6	9.5	10	25	1-470
10	48±1.5	34	9.5	7.3	1.6	9.5	10	25	1-680

5.7 CR-YE type

Watt	Dimensions(mm)									Resistance Range(Ω)
Watt	L	P±1.5	W1±1.0	W2±0.2	W3±0.2	H1±0.2	H2±0.2	H3±1.5	H4±1.5	Resistance Range(Ω)
3	24±1.0	12	9.5	7.4	3	9.5	7.5	4.5	30.4	0.5-150
5	27±1.0	15	9.5	7.4	3	9.5	7.5	4.5	30.4	0.5-220
7	35±1.5	22.5	9.5	7.4	3	9.5	7.5	4.5	30.4	1-470
10	48±1.5	34	9.5	7.4	3	9.5	7.5	4.5	30.4	1-680

5.8 CR-YD1 type

Watt	Dimensions(mm)									Resistance Range(Ω)
Watt	L	P±1.5	W±1	W2	W3	W1	H1	H2	H3	Resistance Range(Ω)
15	48±1.5	22	12.5	10	1.5	5	12.5	30	47.5	10-820
20	63±2.0	44	12.5	10	1.5	5	12.5	30	47.5	1.0-1K

5.9 CR-V type

Watt	Dimensions(mm)									Resistance Range(Ω)
Watt	L1	L2±0.2	L3±0.2	H1±0.2	H2±0.2	H3±1.0	W1±1.0	W2±0.2	W3±0.5	Resistance Range(Ω)
5	31±1.0	5	4	1.5	11	9.5	9.5	1.5	11.5	0.5-220
7	49±1.5	10	4	1.5	11	9.5	9.5	1.5	11.5	1-470
10	62.5±2	10	4	1.5	11	9.5	9.5	1.5	11.5	1-680
15	63.5±2	10	4.5	2.5	14.5	13	13	2.5	15.5	1-820
20	75±2	10	4.5	2.5	17.5	13	13	2.5	15.5	1-1K

5.10 CR-H type

Watt	Dimensions(mm)											Resistance Range(Ω)
Watt	L1	L2±1.0	W3±0.2	P2	P3	t2	h2	W1	W2	H1	H2	Resistance Range(Ω)
10	48±1.5	23	12	6	8	0.6	4	9.5±1.0	5	9.5±1.0	6±1.5	1-680
15	48±1.5	23	12	7	8	0.8	4	12.5±1.2	6	12.5±1.2	7.5±2.0	10-820
20	63±2.0	23	12	7	10	0.8	4	12.5±1.2	6	12.5±1.2	7.5±2.0	1-1K
30	75±2.5	56	18	9	10	0.8	4.2	19±1.5	7.5	19±1.5	10±2.0	1-1K
40	88±2.5	68	18	9	10	0.8	4.2	19±1.5	7.5	19±1.5	10±2.0	1-1K

Competitive Advantage:

1. Factory supply directly

2. Completed certificates such as UL,VDE,SGS,etc and high quality available

3. Quick delivery

4. Best after-sales services

5. OEM & ODM available

Company Details

Bronze Gleitlager

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and

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from Quality China Factory

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Business Type:

Manufacturer,Exporter 
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Year Established:

2006 
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Total Annual:

1,500,000-2,500,000
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Employee Number:

138~168 
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Ecer Certification：

Verified Supplier 

Uchi was established in 2006 in Dongguan, China. After years of development, Uchi has become a large scale hi-tech enterprise that specialized in development and production of complete series of MOV,PTC, NTC series, PPTC series, Fuse(ALL TYPE),Resistor、integrated circuit 、 Capacitor, ... Uchi was established in 2006 in Dongguan, China. After years of development, Uchi has become a large scale hi-tech enterprise that specialized in development and production of complete series of MOV,PTC, NTC series, PPTC series, Fuse(ALL TYPE),Resistor、integrated circuit 、 Capacitor, ...

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Guangdong Uchi Electronics Co.,Ltd
Room 810, Unit 2, Building 5, Huixing Commercial Center, Dongsheng Road No.1, Zhongshan Dong, Shilong Town Dongguan, GUANGDONG, 523326 CN
https://www.uchidg.com/

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