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[China]
Trade Verify
Address: No.1, Yixiang ,Liwu Industrial Park,Liwuyuan Village,Xihu District, Shilong Town,Dongguan 523325,Guangdong ,China
Contact name:James Lai
Dongguan Ampfort Electronics Co., Ltd. |
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Verified Suppliers
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1608 Surface Mount NTC Thermistor 0603 10KOHM 3450 For Temperature
Compensation
I Description Of The Surface Mount NTC Thermistor 0603
NTC (Negative Temperature Coefficient) SMD Thermistors are
multilayer devices that inversely change resistance value according
to temperature. NTC SMD Thermistors detect, measure or compensate
for temperature. ... Ampfort offers Surface Mount NTC
Thermistors in a wide selection of values.
II Features Of The Surface Mount NTC Thermistor 0603
Multilayer SMD NTC with inner electrodes
Nickel barrier termination
Excellent long-term aging stability in a high-temperature
environment
Superior resistance stability during soldering
(change <1%)
III Applications Of The Surface Mount NTC Thermistor 0603
Temperature sensing, protection and compensation in automotive,
industrial, telecom and consumer applications. Examples are:
Battery chargers
Power supplies
IV Dimensional Drawing Of The Surface Mount NTC Thermistor 0603 (unit:mm)
V Main Techno-Parameters(In static air) Of The Surface Mount NTC Thermistor 0603
| P/N | R25 (25℃) | B(25/50℃)(K) | B(25/85℃) | Ir | Dissipation factor(mW/℃) | Thermal time (s) |
| (kΩ) | (K) | (25℃)(mA) | ||||
| QN0603X102F3650FB | 1 | 3650±1% | 3700 | 1 | 1 | <5 |
| QN0603X152F3950FB | 1 | 3950±1% | 3987 | 0.81 | ||
| QN0603X222F3450FB | 2.2 | 3450±1% | 3500 | 0.67 | ||
| QN0603X222F3950FB | 2.2 | 3950±1% | 3987 | 0.67 | ||
| QN0603X302F3450FB | 3 | 3450±1% | 3500 | 0.58 | ||
| QN0603X302F3950FB | 3 | 3950±1% | 3987 | 0.58 | ||
| QN0603X332F3450FB | 3.3 | 3450±1% | 3500 | 0.55 | ||
| QN0603X332F3950FB | 3.3 | 3950±1% | 3987 | 0.55 | ||
| QN0603X472F3500FB | 4.7 | 3500±1% | 3545 | 0.46 | ||
| QN0603X472F3950FB | 4.7 | 3950±1% | 3987 | 0.46 | ||
| QN0603X502F3500FB | 5 | 3500±1% | 3545 | 0.44 | ||
| QN0603X502F3950FB | 5 | 3950±1% | 3987 | 0.44 | ||
| QN0603X682F3500FB | 6.8 | 3500±1% | 3545 | 0.38 | ||
| QN0603X682F3950FB | 6.8 | 3950±1% | 3987 | 0.38 | ||
| QN0603X103F3380FB | 10 | 3380±1% | 3435 | 0.31 | ||
| QN0603X103F3450FB | 10 | 3450±1% | 3500 | 0.31 | ||
| QN0603X103F3610FA | 10 | 3550 | 3610±1% | 0.31 | ||
| QN0603X103F3900FB | 10 | 3900±1% | 3935 | 0.31 | ||
| QN0603X103F3950FB | 10 | 3950±1% | 3987 | 0.31 | ||
| QN0603X153F3950FB | 15 | 3950±1% | 3987 | 0.25 | 1 | <5 |
| QN0603X223F3950FB | 22 | 3950±1% | 3987 | 0.21 | ||
| QN0603X223F4050FB | 22 | 4050±1% | 4100 | 0.21 | ||
| QN0603X333F4050FB | 33 | 4050±1% | 4100 | 0.17 | ||
| QN0603X473F3960FA | 47 | 3920 | 3960±1% | 0.14 | ||
| QN0603X473F4050FB | 47 | 4050±1% | 4100 | 0.14 | ||
| QN0603X473F4150FB | 47 | 4150±1% | 4210 | 0.14 | ||
| QN0603X503F4150FB | 50 | 4150±1% | 4210 | 0.13 | ||
| QN0603X683F4150FB | 68 | 4150±1% | 4210 | 0.12 | ||
| QN0603X104F3950FB | 100 | 3950±1% | 3987 | 0.1 | ||
| QN0603X104F4100FA | 100 | 4050 | 4100±1% | 0.1 | ||
| QN0603X104F4250FB | 100 | 4250±1% | 4310 | 0.1 | ||
| QN0603X154F4250FB | 150 | 4250±1% | 4310 | 0.08 | ||
| QN0603X154F4500FB | 150 | 4500±1% | 4582 | 0.08 | ||
| QN0603X224F4300FB | 220 | 4300±1% | 4343 | 0.06 | ||
| QN0603X224F4500FB | 220 | 4500±1% | 4582 | 0.06 | ||
| QN0603X334F3950FB | 330 | 3950±1% | 3987 | 0.05 | ||
| QN0603X334F4300FB | 330 | 4300±1% | 4343 | 0.05 | ||
| QN0603X474F4000FB | 470 | 4000±1% | 4045 | 0.04 | ||
| QN0603X474F4500FB | 470 | 4500±1% | 4582 | 0.04 | ||
| QN0603X684F4100FB | 680 | 4100±1% | 4135 | 0.03 | ||
| QN0603X684F4500FB | 680 | 4500±1% | 4582 | 0.03 | ||
| QN0603X135F4500FB | 1300 | 4500±1% | 4582 | 0.02 |
VI Sample application: Temperature detection for battery packs of mobile devices
All rechargeable batteries and lithium ion batteries in particular
must be monitored and protected by smart charging circuits, as the
mobile communication device drawing power from the batteries must
operate in a variety of environments, including low and
high-temperature operation.
As preferred temperature detection devices NTC thermistors are used
in the protective circuitry. NTC thermistors can detect the ambient
temperature for different purposes, depending on the battery
system. Especially for quick charging the ambient temperature has
to be measured, as not all batteries allow the charging in the hot
and cold temperature range. Usually charging temperatures of 0 °C
up to 45 °c for slow charging, and 5 °C, 10 °C up to 45 °C for
quick charging are recommended by the battery pack manufacturers
depending on the battery chemistry.
The NTC thermistor is part of a smart charging control unit (see
circuit below), which assures that the ambient temperature is in
the range allowing quick charging. During charging the NTC
thermistor repeatedly measures the temperature all 5 to 10 seconds
and can detect a rise in the battery cell's temperature at the end
of the charging cycle or caused by abnormal charging conditions.
During discharging NTC thermistors also perform temperature
compensation for the voltage measurement, which helps to measure
the remaining charge in the battery.
Fig. 3: Temperature detection for battery packs of mobile devices
VII Advantages of SMD NTC thermistors
NTC thermistors are temperature-sensitive resistor elements using
semiconductor ceramics with negative temperature coefficients
(NTC). That means that the resistance decreases exponentially with
rising temperature. The steeper the RT curve, the greater the
change in resistance within a specified temperature range. With
this property, they are often used as temperature sensors and also
used as temperature protection devices for purposes such as
temperature measurement and temperature compensation.
VIII Frequently Asked Question FAQ
Q: Are you manufacturer ?
A: Yes, we are manufacturer and distributor of famous brand such as
Littelfuse.
Q: Which city does your factory in ?
A: Dongguan City,Guangdong Province, China
Q: May i know your working time ?
A: Official working time is 8:00 ~ 12:00 AM, 1:30 ~ 5:30
PM.However, sales in our overseas department will do overtime
working and 7x24hours online.
Q: Do you accept custom made ?
A: Yes, we are professional in customization model based on rich
experiences and professional engineering.It’s helpful if you can
provide drawing or detailed specification should be.
Q: May i know your lead time ?
A: Lead time is 7 days for standard model and exact lead time
depend on detailed requirements if special model selected.
Q: May i receive samples before place order ?
A: Yes, generally samples is free but sample cost should be charged
if quantity is too many ,product cost is too much or new mould fee
required.
Q: What’s your payment terms ?
A: T/T, Paypal etc.
Q: What’s currency you can accept ?
A: Mainly US dollars and Chinese Yuan
Q: Does your package method safe for transportation ?
A: Yes, our package would be 10~1000pcs per plastic bag ->
multiple bags per box -> multiple boxes per carton and it is
safe for express/air/boat shipment.
