ESR18
Resistors
Anti-surge Chip Resistors
ESR18 (1206 size: 1 / 3W)
Features 1) Power rating of 1 / 3W (MCR18 1 / 4W) 2) Superior anti surge to MCR series. 3) Highly reliable chip resistor Ruthenium oxide dielectric offers superior resistance to the elements. 4) ROHM resistors have approved ISO9001- / ISO/TS 16949- certification. Design and specifications are subject to change without notice. Carefully check the specification sheet before using or ordering it.
Ratings
Item Rated power Conditions Power must be derated according to the power derating curve in Figure 1 when ambient temperature exceeds 70°C.
100 80 60 40 20 0
Specifications 0.33W (1 / 3W) at 70°C
POWER LOAD (%)
−55
0
70
100
155
AMBIENT TEMPERATURE (°C)
Fig.1 Rated voltage The voltage rating is calculated by the following equation. If the value obtained exceeds the limiting element voltage, the voltage rating is equal to the maximum operating voltage. E: Rated voltage (V) E= P×R P: Rated power (W) R: Nominal resistance (Ω) Nominal resistance Operating temperature See Table 1. −55°C to +155°C Limiting element voltage 200V
Rev.F
1/4
ESR18
Resistors
Table 1 Resistance tolerance D (±0.5%) F (±1%) J (±5%) Resistance range (Ω) Resistance temperature coefficient (ppm / °C)
10 ≤ R ≤ 1M 1 ≤ R ≤ 10M 1 ≤ R ≤ 10M
(E24) (E24) (E24)
±100 ±100 ±200
Before using components in circuits where they will be exposed to transients such as pulse loads (short–duration, high–level loads), be certain to evaluate the component in the mounted state. In addition, the reliability and performance of this component cannot be guaranteed if it is used with a steady state voltage that is greater than its rated voltage.
Characteristics
Item Guaranteed value Resistor type J : ±5% F : ±1% D : ±0.5% See Table.1 ± (2.0%+0.1Ω) A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. ± (1.0%+0.05Ω) No remarkable abnormality on the appearance. ± (1.0%+0.05Ω) ± (3.0%+0.1Ω) Damp heat, steady state ± (3.0%+0.1Ω) Endurance at 70°C ± (3.0%+0.1Ω) Endurance ± (1.0%+0.05Ω) Resistance to solvent ± (1.0%+0.05Ω) Without mechanical damage such as breaks. ± (5.0%+0.05Ω) Static electric characteristics Test conditions (JIS C 5201-1) JIS C 5201-1 4.5
Resistance Variation of resistance with temperature Overload
JIS C 5201-1 4.8 Measurement : −55 / +25 / +125°C JIS C 5201-1 4.13 Rated voltage (current) ×2.5, 2s. Limiting Element Voltage×2 : 400V JIS C 5201-1 4.17 Rosin·Ethanol (25%WT) Soldering condition : 235±5°C Duration of immersion : 2.0±0.5s. JIS C 5201-1 4.18 Soldering condition : 260±5°C Duration of immersion : 10±1s. JIS C 5201-1 4.19 Test temp. : −55°C to +125°C 5cyc JIS C 5201-1 4.24 40°C, 93%RH Test time : 1,000h to 1,048h JIS C 5201-1 4.25.1 Rated voltage (current), 70°C 1.5h : ON − 0.5h : OFF Test time : 1,000h to 1,048h JIS C 5201-1 4.25.3 155°C Test time : 1,000h to 1,048h JIS C 5201-1 4.29 23±5°C, Immersion cleaning, 5±0.5min. Solvent : 2-propanol JIS C 5201-1 4.33
Solderability
Resistance to soldering heat Rapid change of temperature
Bend strength of the end face plating
EIAJ ED-4701/300 Test method 304 Voltage : 3kv R : 1.5kΩ C : 100pF Apply cycle : 1 time
Rev.F
2/4
ESR18
Resistors
Dimensions (Unit : mm)
1
0.3±0.25
2
No.
1
Material
Resistive element (Oxide metal thick film) Silver thick film electrode Nickel electrode Sn electrode Alumina substrate Overcoating (Resin)
3
2
0.5±0.25 3.2±0.15
5
3
0.55±0.1
4
4 5 6
6
Packaging
Reel Taping
P0 P2 P1 φD0 E F B2
08 06 04 02 02 04 06 08
1.6±0.15
W
A
B
D
A2
Heat crimp cover Tape Thick paper mount
C
Chip resistor Square punchout hole
T2
(Underside paper tape) Label EIAJ ET-7200B compliant
W 8.0±0.3 F 3.5±0.05 P0 4.0±0.1 E 1.75±0.1 P1 4.0±0.1 A2 1.95 +0.1 −0.05
(Unit : mm)
B2 3.5 +0.15 −0.05 T2 Max. 1.1
(Unit : mm) A B C D
D0 +0.1 φ1.5 0
P2 2.0±0.05
φ180
0 −1.5
φ60
+1 0
9
+1.0 0
φ13±0.2
Rev.F
3/4
ESR18
Resistors
Part No. Explanation
ESR18
Part No.
EZP
J
Nominal resistance
Resistance code, 3 or 4 digits.
Resistance tolerance
J F D
±5% ±1% ±0.5%
Resistance tolerance J F,D : :
Resistance code 3 digits 4 digits
Packaging Specifications Code
Part No. ESR18 Code EZP Resistance tolerance J(±5%) F(±1%) D(±0.5%) Packaging specifications Paper tape (4mm Pitch) Reel φ180mm (7in.) Basic ordering unit(pcs) 5,000
Reel (φ180) : JEITA ET-7200B : Standard product
Rev.F
4/4
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the NOTES specified in this catalog.
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