Cal-Chip EElleeccttrroonniiccss,, IInnccoorrppoorraatteeddRM SERIES
Thick Film Chip Resistors - RM Series
59
“Fixed Chip Resistors” manufactured for more compact electronic compo-
nents and automatic mounting system.
These Chip Resistors have electrical stability and mechanical stress due to
used reliable metal glazed paste printed on Alumina substrate. Resistors will
reduce your cost and save developmental time.
FEATURES
1.Ver y small, thin and light weight.
2. Both flow soldering and reflow soldering are applicable.
3. Owing to the reduced lead inductance, the high frequency
characteristic is excellent.
4. Suitable size and packaging for surface mount assembly.
PART NUMBERING
1. Code Designation: Thick Film Chip Resistors
2. Dimensions: RM04 1.0x.5mm; RM06 1.6x.8mm;
RM10 2.0xl.25mm; RM12 3.2x1.6mm
RM14 3.2x2.65mm; RM20 5.0x2.5mm;
RM25 6.3x3.1 mm
3. Resistance T olerance: F: ±1%; J: ±5%
4. Nominal Resistance: 5% - 3 Digit
1st 2 significant 3rd
is multiplier (10x)
1% - 4 digit
1st 3 significant
4th multiplier (10x)
0000 = jumper “0” ohm
5. Packaging: Bulk packaging: BP
Tape packaging: CT
(EX) 0805 1 /10 watt 5% 10ohm
RM 10 J 100 CT
123 45
Cal-Chip EElleeccttrroonniiccss,, IInnccoorrppoorraatteeddRM SERIES
Thick Film Chip Resistors
60
PERFORMANCE CHARACTERISTICS (TESTED PER MIL-STD-202)
DIMENSIONS Inches (mm)
Type Body Length (L) Body Width (W) Body Height (H) Top Terminator (a) Bottom Terminator (b)
RM04 0.39+.004/-.002 (1.0+0.10/-0.05) .020+.004/-.002 (0.50+.10/-0.05) .014±.002 (.35±0.05) .008±.004 (0.20±0.10) .010+.008/-.004 (0.25+0.20/-0.10)
RM06 .063±.004 (1.60±0.10) .031+.006/-.002 (0.80+0.15/-0.05) .018±.004 (0.45±0.10) .010±.004 (0.25±0.10) .012+.008/-.004 (0.30+0.20/-O.10)
RM10 .078±.008 (2.00±0.20) .049±.008 (1.25±0.20) .018±.004-(0.45±0.10) .016±.008 (0.40±0.20) .012+.008/-.004 (0.30+0.20/-O.10)
RM12 .122±.004 (3.10±0.10) .061±.004 (1.55±0.10) .021+.004/-.002 (0.55+0.10/-0.05) .018±.008 (0.45±0.20) .012+.008/-.004 (0.30+0.20/-0.10)
RM14 .122±.004 (3.10±0.10) .100±.004 (2.55±0.10) .021+.004/-.002 (0.55+0.10/-0.05) .018±.008 (0.45±0.20) .012+.008/-.004 (0.30+0.20/-0.10)
RM20 .197±.008 (5.00±0.20) .098±.008 (2.50±0.20) .021±.004 (0.55±0.10) .020±.008 (0.50±0.20) .020±.008 (0.50±0.20)
RM25 .248±.008 (6.30±0.20) .124±.008 (3.15±0.20) .021±.004 (0.55±0.10) .020±.008 (0.50±0.20) .020±.008 (0.50±0.20)
Notes 1. RM04 J & F are not marked.
2. RM10 is dual rated at 1/10W, 1/8W.
3. RM12 is dual rated at 1/4W, 1/8W.
4. Zero ohm (0.05Ωmax.) jumper available in all sizes.
5. E-12 resistance ranges apply.
6. Higher and lower values available. Consult factory.
Maximum Maximum Resistance Resistance Current
Type Package Power Rating Working Overload Temperature Range Tolerance Rating
Size (Watts) Voltage Voltage Coefficient of Jumper3
RM04 0402 1/16 @ 70°C 50V 100V ±250ppm/°C 2.2Ω- 9.1Ω±5% 1A max.
±200ppm/°C 10Ω- 3.3M ±5%
±200ppm/°C 10Ω- 1M ±1%
RM06 0603 1/16 @ 70°C 50V 100V ±500ppm/°C 1.0Ω- 9.1Ω±5% 1A max.
±500ppm/°C 1.1M - 5.6M ±5%
±200ppm/°C 10Ω- 1M ±5%
±100ppm/°C 10Ω- 1M ±1%
RM10 0805 1/101@ 70°C 150V 300V ±500ppm/°C 1.0Ω- 9.1Ω±5% 2A max.
±500ppm/°C 1.1M- 10M ±5%
±200ppm/°C 10Ω- 1M ±5%
±100ppm/°C 10Ω- 1M ±1%
RM12 1206 1/82@ 70°C 200V 400V ±500ppm/°C 1.0Ω- 9.1Ω±5% 2A max.
±500ppm/°C 1.1M - 10M ±5%
±200ppm/°C 10Ω- 1M ±5%
±100ppm/°C 10Ω- 1M ±1%
RM14 1210 1/4 @ 70°C 200V 400V ±500ppm/°C 1.0Ω- 1.8Ω4±5% 3A max.
±500ppm/°C 2.2Ω- 9.1Ω±5%
±200ppm/°C 10Ω- 10M ±5%
±100ppm/°C 10Ω- IM ±1%
RM20 2010 1/2 @ 70°C 200V 400V ±500ppm/°C 1.0Ω- 8.2Ω4±5% 3A max.
±200ppm/°C 10Ω- 1M ±5%
±100ppm/°C 10Ω- 1M ±1%
RM25 2512 1 @ 70°C 200V 400V ±500ppm/°C 1.0Ω- 8.2Ω4±5% 3A max.
±200ppm/°C 5.6Ω- 1M ±5%
±100ppm/°C 47.5Ω- 1M ±1%
Cal-Chip EElleeccttrroonniiccss,, IInnccoorrppoorraatteeddRM SERIES
Thick Film Chip Resistors
61
MARKING
Resistance value in three digit designation system is marked
on the glasscoat. Illustrated is a resistor of 15KΩ. Four digit
resistance designation system is applied to RM12 and E-96
Series. For example, 1502 designated 15KΩ. (The last digit
specifies the number of zeros.)
1. For E-24 Series (±5%-J, ±2%-G, ±10%-K Tolerances)
In 0603, 0805, 1206, 1210, 2010 and 2512 sizes:
3 DIGIT SYSTEM - First two digits are significant and
third digit is multiplier, “R” indicates decimal on values
under 10 ohms.
Examples: 10R = 10 ohms 102 = 1k ohms
470 = 47 ohm 103 = 10k ohms
101 = 100 ohms 104 = 100k ohms
105 = 1 megohms
2. For E-96 Series (±1%-F Tolerance)
In 0805, 1206, and 1210 sizes:
4 DIGIT SYSTEM - First three digits are significant and
four th digit is multiplier “R” indicates decimal on values
under 10 ohms.
Examples: 10R0 = 10 ohms 1003 = 100k ohms
1000 = 100 ohms 1004 = 1 megohms
1001 = 1k ohms 1052 = 10.5k ohms
1002 = 10k ohms 2213 = 221k ohms
3. For E-96 Series (±1%-F Tolerance) in 0603 size
3 DIGIT SYSTEM. (Due to space restr ictions)
PERFORMANCE CHARACTERISTICS
MATERIALS Feature Material Remarks (Reference Only)
Substrate Alumina Porcelain Purity 90% min.
Resistive Film Ruthenium-Oxide Film 20 Microns Thick
Coating Boro-Silicated Acid Lead Glass 20 Microns Thick
Terminations 90/10 Tin-Lead (Electrical Plated) over 3 Microns Thick
Nickel (Electrical Plated) over 3 Microns Thick
AG-PD (Silver Palladium[Glaze Printed]) 8 Microns Thick
E-24 E-96
Value Value Code Value Code Value Code Value Code
100 100 01 102 02 105 03 107 04
110 110 05 113 06 115 07 118 08
120 121 09 124 10 127 11 130 12
130 133 13 137 14 140 15 143 16
150 147 17 150 18 154 19 158 20
160 162 21 165 22 169 23 174 24
180 178 25 182 26 187 27 191 28
200 196 29 200 30 205 31 210 32
220 215 33 221 34 226 35 232 36
240 237 37 243 38 249 39 255 40
270 261 41 267 42 274 43 280 44
300 287 45 294 46 301 47 309 48
330 316 49 324 50 332 51 340 52
360 348 53 357 54 365 55 374 56
390 383 57 392 58 402 59 412 60
430 422 61 432 62 442 63 453 64
470 464 65 475 66 487 67 499 68
510 511 69 523 70 536 71 549 72
560 562 73 576 74 590 75 604 76
620 619 77 634 78 649 79 665 80
680 681 81 698 82 715 83 732 84
750 750 85 768 86 787 87 806 88
820 825 89 845 90 866 91 887 92
910 909 93 931 94 953 95 976 96
5% 3-Digit 1% 4-Digit
0603* 0805
0805 1206
1206 1210
1210 2010
2010 2512
2512
*For 1%, a 3-digit
alpha-numeric
marking system is
used.
Items Specifications, Requirement Tested per EIA J-RC-2690A Typical
Moisture Resistance, Thermal Shock ±(1%+0.05Ω), No Mechanical Damage -55°C to +125°C, 5 cycles Within ±0.2%
Low Temperature Exposure ±(3%+0.1Ω), No Mechanical Damage -55°C, 1,000 Hours Within ±0.5%
Load Life <1 meg ±(3%+0.1Ω), ≥1 meg ±5% 70°C, rated voltage, 1.5hr on/0.5hr off, 1,000 hrs See Graph
Load Life in Moisture <1 meg ±(3%+0.1Ω), ≥1 meg ±5% 40°C, 95% R.H., 1.5hr on/0.5hr off, 1,000 hrs See Graph
Vibration ±(1%+0.05Ω), No Mechanical Damage 10-55 Hz, 3 direction, each 2 hours Within ±0.1%
Resistance to Soldering Heat ±(1%+0.05Ω), No Mechanical Damage 270°C, 10 seconds See Graph
Solderability min. 95% coverage 230°C, 3 seconds, flux applied1More than 97%
Heat Resistance Adhesion Curing ±(1%+0.05Ω) +150°C, 10 minutes Within ±0.3%
Dry Heat ±(3%+0.1Ω), No Mechanical Damage -125°C, 1,000 hours Within ±0.5%
Ter minal Strength Pull ±(1%+0.05Ω), No Mechanical Damage 500G load, 30 seconds Within ±0.2%
Board Bending ±(1%+0.05Ω), No Mechanical Damage 1/45mm bend, 10 seconds Within ±0.2%
Dielectric Withstanding Voltage No Insulation Breakdown 500V, 1 minute Above 900V
Short Time Overload ±(1%+0.05Ω), No Evidence of Arc 2 1/2 times rated voltage, 5 seconds Within ±0.4%
Insulation Resistance 1,000 meg minimum 500V, 1 minute Above 106meg
Voltage Coefficient +0/-100ppm/V (above 1K±) Rated Voltage & 1/10 times rated voltage Within -90ppm/V
Cal-Chip EElleeccttrroonniiccss,, IInnccoorrppoorraatteeddRM SERIES
Thick Film Chip Resistors
62
PERFORMANCE CURVES
Power - Temperature Derating Current Noise
Load Life in Moisture (1,000 hours) Load Life (1,000 hours)
High Frequency Characteristics Resistance to Soldering Heat
