NJ28QA0503F--

1
010617
High precision resistance and an outstanding ability to
reproduce the sensibility index B, make these ranges of
products the types of thermistors ideal for temperature
measurement applications.
Leaded or unleaded, these small size and rapid response
time thermistors are able to meet the most accurate
requirements.
Types NJ 28 NP 30 NI 24 NK 20
Finish Coated chip with phenolic Coated chip with epoxy Chip
resin + varnish Coated chip with epoxy AWG30 insulated leads
+ tinned copper wires + Silver plated nickel wires
Marking On packaging only
Operating temperature -55°C to +150°C
Tolerance on Rn (25°C) ±1%, ±2%, ±3%
Maximum dissipation at 25°C 0.16 W
Thermal dissipation factor* 3 mW/°C 3 mW/°C 2 mW/°C
Thermal time constant 8 s 8 s 6 s
Response time < 2 s
NTC Accurate Thermistors
NP30 - NJ 28 NI 24 NK 20
2.8 (.110) max
2.8 (.110) max
35 (1.38) min
3 (.118) max
0.4 (.016)
+10 %
- 15%
2.4 (.094) max
2.4 (.094) max
35 (1.38) min
3 (.118) max
0.57 (.022)
+7%
-7%
3.0 (.118) max
3.0 (.118) max
35 (1.38) min
3 (.118) max
0.4 (.016)
+10%
-15%
0.75 (.030) ± 0.25 (.010)
1.75 (.069) ± 0.25 (0.10)
1.75 (.069)
± 0.25 (0.10)
DIMENSIONS:
millimeters (inches)
FEATURES
• High Accuracy
• Fast thermal response
• Commercial, Industrial and Automotive Applications
• AEC-Q200 qualified
OPTIONS
Consult factory for availability of options
• other nominal resistance values
• other tolerances
• controlled dimensions (e.g. reduced head size for NP30)
• alternative lead materials (e.g. steel, nickel)
• customized lead lengths, spacing, forming (kink) etc.
• epoxy coating on leads (NP30)
APPLICATIONS
• Temperature measurement
• Liquid level or flow detection
• Alarms and fire detectors
• HVAC and Refrigeration
• Fans
• Air intake temperature
• Electric pup module
• Water Temperature
• Evaporator probe
• and more
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TABLE OF VALUES
Types Rn at 25°C (Ω) Material Code B (K) at 25°C (%/°C)
N_ _ _ KA 0202 2,000 KA 3625 ± 1% – 4.1
N_ _ _ MA 0302 3,000 MA 3965 ± 0.5% – 4.5
N_ _ _ MA 0502 5,000 MA 3965 ± 0.5% – 4.5
N_ _ _ MA 0103 10,000 MA 3965 ± 0.5% – 4.5
N_ _ _ NA 0103 10,000 NA 4100 ± 1% – 4.6
N_ _ _ PA 0203 20,000 PA 4235 ± 1% – 4.8
N_ _ _ QA 0503 50,000 QA 4250 ± 1% – 4.8
N_ _ _ RA 0104 100,000 RA 4380 ± 1% – 4.9
* – = Add type as outlined above (Example NJ 2 8).
Resistance - Temperature characteristics: pages 30 to 34.
NTC Accurate Thermistors
NP30 - NJ 28 NI 24 NK 20
HOW TO ORDER
NJ28
Type
NP30
NJ28
NI24
MA
Material Code
MA
(See table above)
0502
Resistance
5 kΩ
(See table above)
M
Tolerance
F (±1%)
G (±2%)
H (±3%)
- -
Packaging
– –: Bulk
Ammopack (for NP30 and NJ28)
(See table page 25)
Tape and reel (for NP30 and NJ28)
(See table page 25)
3
NTC Thermistors Manufacturing Process
NP30 - NJ 28 NI 24 NK 20

NJ28QA0503F--

Mfr. #:
Manufacturer:
N/A
Description:
Thermistors - NTC 50K OHM 1%
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union