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NTC & PTC Thermistor Specifications

Full specifications for the Chip NTC Thermistor series and the Chip PTC Thermistor series: model tables, part-number structure, dimensions, reliability, packaging and soldering.

Chip NTC Thermistor NTC models Automotive NTC NTC part number R–T table Chip PTC Thermistor Dimensions Reliability Packaging & storage Soldering Datasheets

Chip NTC Thermistor

Monolithic ceramic chip in footprints from 0201 to 1206, built for dense SMT boards
Ends plated in three layers that wet readily and withstand thermal shock — process them on reflow or wave lines
Very little parasitic capacitance, so the sensor reacts quickly
Rated for −40 to +125 °C operation

0201040206030805120659 standard models (0402–1206)Custom values on request

Series specifications

Parameter	Specification
Package sizes	0201, 0402, 0603, 0805, 1206
Zero-power resistance R25	2.2 kΩ to 560 kΩ (see model table); 0201: 10 kΩ to 100 kΩ
B constant B25/50	3380 3435 3450 3500 3600 3950 4050 4100 4150 4200 4250 4500 K
R25 tolerance	F ±1% · H ±3% · J ±5% · K ±10%
B-value tolerance	F ±1% · G ±2% · H ±3%
Operating temperature	−40 to +125 °C
Measurement	R25 at 25 ± 0.1 °C, ≤0.1 mW; B from R25 and R50
Environmental	RoHS compliant (lead-free), REACH SVHC and halogen-free tested

Ratings by size

Size	L × W × H (mm)	Dissipation constant δ	Rated power	Thermal time constant τ
0201	0.6 × 0.3 × 0.3	1.0 mW/°C	100 mW	≤3 s
0402	1.0 × 0.5 × 0.5	1.0 mW/°C	100 mW	<3 s
0603	1.6 × 0.8 × 0.8	1.0 mW/°C	100 mW	<5 s
0805	2.0 × 1.25 × 0.85	2.0 mW/°C	100 mW	<5 s
1206	3.2 × 1.6 × 0.85	3.0 mW/°C	150 mW	<8 s

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Rated power: power that raises the body temperature by 100 °C at 25 °C ambient. Permissible operating current: current that raises the body temperature by 1 °C in still air.

Standard model table

□ = tolerance, packaging and environmental codes (see part-number structure below). Other R25 / B combinations can be made to order.

0201 — models (contact us for the full 0201 model list)

Part number	R25	R25 code	B25/50	Permissible current (25 °C)
YSN-0201R103□3380□-□	10 kΩ	R103	3380 K	0.31 mA
YSN-0201R223□3380□-□	22 kΩ	R223	3380 K	0.21 mA
YSN-0201R473□4050□-□	47 kΩ	R473	4050 K	0.14 mA
YSN-0201R683□4150□-□	68 kΩ	R683	4150 K	0.12 mA
YSN-0201R104□4250□-□	100 kΩ	R104	4250 K	0.10 mA

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0201: contact us for the full 0201 model list. Other R25 / B combinations and tolerances are confirmed with your inquiry.

0402 — 11 models

Part number	R25	R25 code	B25/50	Permissible current (25 °C)
YSN-0402R472□3500□-□	4.7 kΩ	R472	3500 K	0.46 mA
YSN-0402R103□3380□-□	10 kΩ	R103	3380 K	0.31 mA
YSN-0402R103□3950□-□	10 kΩ	R103	3950 K	0.31 mA
YSN-0402R153□3950□-□	15 kΩ	R153	3950 K	0.25 mA
YSN-0402R223□3950□-□	22 kΩ	R223	3950 K	0.21 mA
YSN-0402R473□4050□-□	47 kΩ	R473	4050 K	0.14 mA
YSN-0402R683□4150□-□	68 kΩ	R683	4150 K	0.12 mA
YSN-0402R104□3950□-□	100 kΩ	R104	3950 K	0.10 mA
YSN-0402R104□4250□-□	100 kΩ	R104	4250 K	0.10 mA
YSN-0402R224□4250□-□	220 kΩ	R224	4250 K	0.06 mA
YSN-0402R474□3950□-□	470 kΩ	R474	3950 K	0.04 mA

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0603 — 19 models

Part number	R25	R25 code	B25/50	Permissible current (25 °C)
YSN-0603R222□3380□-□	2.2 kΩ	R222	3380 K	0.67 mA
YSN-0603R332□3380□-□	3.3 kΩ	R332	3380 K	0.55 mA
YSN-0603R472□3500□-□	4.7 kΩ	R472	3500 K	0.46 mA
YSN-0603R682□3435□-□	6.8 kΩ	R682	3435 K	0.38 mA
YSN-0603R103□3380□-□	10 kΩ	R103	3380 K	0.31 mA
YSN-0603R103□3600□-□	10 kΩ	R103	3600 K	0.31 mA
YSN-0603R103□3950□-□	10 kΩ	R103	3950 K	0.31 mA
YSN-0603R153□3950□-□	15 kΩ	R153	3950 K	0.25 mA
YSN-0603R223□3950□-□	22 kΩ	R223	3950 K	0.21 mA
YSN-0603R333□3950□-□	33 kΩ	R333	3950 K	0.17 mA
YSN-0603R473□4050□-□	47 kΩ	R473	4050 K	0.14 mA
YSN-0603R683□4150□-□	68 kΩ	R683	4150 K	0.12 mA
YSN-0603R104□3950□-□	100 kΩ	R104	3950 K	0.10 mA
YSN-0603R104□4250□-□	100 kΩ	R104	4250 K	0.10 mA
YSN-0603R154□3950□-□	150 kΩ	R154	3950 K	0.08 mA
YSN-0603R154□4250□-□	150 kΩ	R154	4250 K	0.08 mA
YSN-0603R224□4200□-□	220 kΩ	R224	4200 K	0.06 mA
YSN-0603R474□3950□-□	470 kΩ	R474	3950 K	0.04 mA
YSN-0603R564□4100□-□	560 kΩ	R564	4100 K	0.04 mA

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0805 — 17 models

Part number	R25	R25 code	B25/50	Permissible current (25 °C)
YSN-0805R222□3380□-□	2.2 kΩ	R222	3380 K	0.95 mA
YSN-0805R472□3500□-□	4.7 kΩ	R472	3500 K	0.73 mA
YSN-0805R682□3380□-□	6.8 kΩ	R682	3380 K	0.73 mA
YSN-0805R103□3380□-□	10 kΩ	R103	3380 K	0.50 mA
YSN-0805R103□3600□-□	10 kΩ	R103	3600 K	0.50 mA
YSN-0805R103□3950□-□	10 kΩ	R103	3950 K	0.50 mA
YSN-0805R153□3950□-□	15 kΩ	R153	3950 K	0.40 mA
YSN-0805R223□3950□-□	22 kΩ	R223	3950 K	0.33 mA
YSN-0805R333□3950□-□	33 kΩ	R333	3950 K	0.27 mA
YSN-0805R473□4050□-□	47 kΩ	R473	4050 K	0.23 mA
YSN-0805R683□4150□-□	68 kΩ	R683	4150 K	0.19 mA
YSN-0805R104□4050□-□	100 kΩ	R104	4050 K	0.16 mA
YSN-0805R104□4250□-□	100 kΩ	R104	4250 K	0.16 mA
YSN-0805R224□4250□-□	220 kΩ	R224	4250 K	0.10 mA
YSN-0805R334□3950□-□	330 kΩ	R334	3950 K	0.08 mA
YSN-0805R474□3950□-□	470 kΩ	R474	3950 K	0.07 mA
YSN-0805R474□4500□-□	470 kΩ	R474	4500 K	0.07 mA

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1206 — 12 models

Part number	R25	R25 code	B25/50	Permissible current (25 °C)
YSN-1206R472□3600□-□	4.7 kΩ	R472	3600 K	0.98 mA
YSN-1206R502□3450□-□	5.0 kΩ	R502	3450 K	0.95 mA
YSN-1206R103□3380□-□	10 kΩ	R103	3380 K	0.66 mA
YSN-1206R103□3450□-□	10 kΩ	R103	3450 K	0.66 mA
YSN-1206R103□3600□-□	10 kΩ	R103	3600 K	0.66 mA
YSN-1206R103□3950□-□	10 kΩ	R103	3950 K	0.66 mA
YSN-1206R473□3950□-□	47 kΩ	R473	3950 K	0.45 mA
YSN-1206R473□4050□-□	47 kΩ	R473	4050 K	0.45 mA
YSN-1206R503□3950□-□	50 kΩ	R503	3950 K	0.43 mA
YSN-1206R503□4050□-□	50 kΩ	R503	4050 K	0.43 mA
YSN-1206R104□3950□-□	100 kΩ	R104	3950 K	0.21 mA
YSN-1206R104□4250□-□	100 kΩ	R104	4250 K	0.21 mA

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Part-number structure — example YSN-0603R103F3380F-R

YSN-Chip NTC Thermistor

0603Size 1.6 × 0.8 mm (also 0201 / 0402 / 0805 / 1206)

R103R25 = 10 × 10³ Ω = 10 kΩ

FR25 tolerance ±1%

3380B25/50 = 3380 K

FB tolerance ±1%

-RGrade & packaging: standard grade, tape & reel

R25 tolerance: F ±1%, H ±3%, J ±5%, K ±10%. B tolerance: F ±1%, G ±2%, H ±3%. Suffix: -R = standard grade, tape & reel; -B = standard grade, bulk; -AR = automotive grade, tape & reel. All parts are RoHS compliant.

R–T table — YSN-0603R103F3950F-R (10 kΩ ±1%, B25/50 3950 K ±1%)

Temp. (°C)	R min (kΩ)	R nom (kΩ)	R max (kΩ)	Temp. tolerance (±°C)
-40	332.1	347.6	363.8	0.66
-30	174.2	181.2	188.4	0.61
-20	95.5	98.7	102	0.56
-10	54.47	55.97	57.52	0.49
0	32.2	32.91	33.64	0.42
10	19.65	19.98	20.32	0.35
20	12.35	12.51	12.66	0.27
25	9.9	10	10.1	0.24
30	7.955	8.053	8.151	0.29
40	5.234	5.321	5.408	0.41
50	3.526	3.598	3.671	0.54
60	2.427	2.486	2.546	0.68
70	1.703	1.75	1.799	0.82
80	1.216	1.254	1.293	0.98
85	1.034	1.068	1.103	1.06
90	0.882	0.9125	0.9439	1.14
100	0.6495	0.674	0.6994	1.31
110	0.4867	0.5065	0.5271	1.48
120	0.3695	0.3856	0.4023	1.67
125	0.3235	0.338	0.3531	1.76

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Excerpt. The full table (−40 to +125 °C in 1 °C steps) is included in the datasheet. For this model the operating range in its approval specification is −40 to +150 °C; rated power 200 mW, δ 2 mW/°C, τ 5 s, permissible current 0.44 mA. R–T tables for other models are provided on request.

Automotive grade

Automotive Chip NTC Thermistor · 0603

Automotive-grade Chip NTC thermistor for automotive electronics and other high-reliability applications. Reliability tests are performed with reference to the AEC-Q200 test standard (mechanical shock, vibration, ESD, board flex, terminal strength, temperature cycling, biased humidity and operational life).

0603−50 to +150 °CMSL 1RoHS · halogen-free · REACH SVHC

Part number: YSN-0603R103F3950F-AR — Automotive NTC 0603 (10 kΩ ±1%, B25/50 3950 K); suffix -AR = automotive grade, tape & reel. The ordering code is confirmed with your quotation.

Parameter	Specification
Package	0603 — 1.6 ± 0.15 × 0.8 ± 0.15 × 0.8 ± 0.15 mm; termination 0.4 ± 0.2 mm
R25	10 kΩ ±1%
B25/50	3950 K ±1%
B25/85	3990 K (reference)
Permissible operating current (25 °C)	0.31 mA
Rated power (25 °C)	100 mW
Dissipation constant δ	1.0 mW/°C
Thermal time constant τ	<5 s
Operating temperature	−50 to +150 °C
Moisture sensitivity	MSL 1
Packaging	Paper tape & reel, 4,000 pcs / reel

Reliability tests (with reference to AEC-Q200 test standards)

Test	Condition	Criteria
Mechanical shock	Half-sine 1500 g, 0.5 ms, 3 shocks in each of 6 directions (18 total)	ΔR25 ≤±1%, ΔB ≤±1%
Vibration	5 g, 10–2000 Hz, 12 cycles in each of X/Y/Z (12 h)	ΔR25 ≤±1%, ΔB ≤±1%
Resistance to soldering heat	260 ± 5 °C, 10 ± 1 s, SAC305	ΔR25 ≤±1%, ΔB ≤±1%
ESD	AEC-Q200-002 / ISO 10605, contact and air discharge	ΔR25 ≤±1%, ΔB ≤±1%
Solderability	J-STD-002: 235 ± 3 °C, 5 s after 155 °C / 4 h ageing	≥95% coverage
Board flex	AEC-Q200-005: 2 mm, 60 s	ΔR25 ≤±1%, ΔB ≤±1%
Terminal strength	AEC-Q200-006: 5 N, 60 s	ΔR25 ≤±1%, ΔB ≤±1%
Flammability	UL-94	V-0 or V-1
High-temperature storage	125 °C, 1000 h, no load	ΔR25 ≤±2%, ΔB ≤±1%
Temperature cycling	−55 / +125 °C, 5 min dwell, 1000 cycles	ΔR25 ≤±2%, ΔB ≤±1%
Biased humidity	85 °C / 85% RH, 10% rated power, 1000 h	ΔR25 ≤±5%, ΔB ≤±2%
Operational life	125 °C at permissible current, 1000 h	ΔR25 ≤±5%, ΔB ≤±2%

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All tests except solderability and flammability are preceded by two reflow cycles; no visible damage is allowed. To avoid self-heating, keep the measuring current below 1/10 of the permissible current and do not apply more than 10 mW in a short time.

R–T table excerpt

Temp. (°C)	R min (kΩ)	R nom (kΩ)	R max (kΩ)
-50	660.585	696.179	733.617
-40	329.927	345.275	361.300
-30	173.153	180.032	187.165
-20	95.008	98.185	101.459
-10	54.247	55.744	57.278
0	32.102	32.814	33.538
10	19.622	19.958	20.297
20	12.351	12.504	12.657
25	9.900	10.000	10.100
30	7.952	8.049	8.147
40	5.226	5.313	5.400
50	3.516	3.588	3.661
60	2.417	2.476	2.535
70	1.695	1.742	1.790
80	1.211	1.249	1.288
85	1.031	1.065	1.100
90	0.881	0.911	0.943
100	0.651	0.675	0.701
110	0.489	0.508	0.529
120	0.372	0.388	0.405
125	0.326	0.341	0.356
130	0.284	0.297	0.311
140	0.222	0.232	0.244
150	0.175	0.184	0.193

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Full table −50 to +150 °C in 1 °C steps in the datasheet.

Mounting & soldering

Recommended land: a 0.6–0.8, b 0.6–0.7, c 0.6–0.8 mm; solder paste 200 µm
Reflow: ramp 1–2 °C/s; preheat 150–170 °C, 90 ± 30 s; above 240 °C 20–40 s; peak 260 °C, 10 s max.; 2 reflows max. (cumulative peak time ≤30 s)
Hand soldering: iron ≤20 W, tip ≤280 °C, ≤3 s, preheat 150 °C / 60 s, once only
Rosin flux only; avoid strongly acidic or water-soluble flux
Storage: −10 to +40 °C, ≤75% RH, use within 6 months of delivery

Chip PTC Thermistor

0603 chip PTC thermistor. Resistance remains nearly constant up to the Curie point — defined as the temperature at which resistance reaches twice its 25 °C value — and then rises sharply, so the circuit can detect over-temperature at a defined resistance threshold.

Series specifications

Parameter	Specification
Package	0603 (1.6 × 0.8 × 0.8 mm)
Resistance at 25 °C (R25)	470 Ω ±50%
Curie point	50, 60, 70, 80, 90, 100, 110, 120, 130 °C
Sensing temperature	Curie point +15 ± 5 °C at 4.7 kΩ; +30 ± 7 °C at 47 kΩ
Maximum voltage	32 V DC
Operating temperature	From −20 to +90 °C (50 °C model) up to −20 to +160 °C (120 / 130 °C models)
Measurement	R25 at 25 ± 0.2 °C, ≤0.1 mW, <1.5 V DC

Model table

Part number	Curie point	Sensing temp. at 4.7 kΩ	Sensing temp. at 47 kΩ	Max. voltage	Operating range
YSP-0603R471P050	50 °C	65 ± 5 °C	80 ± 7 °C	32 V DC	−20 to +90 °C
YSP-0603R471P060	60 °C	75 ± 5 °C	90 ± 7 °C	32 V DC	−20 to +100 °C
YSP-0603R471P070	70 °C	85 ± 5 °C	100 ± 7 °C	32 V DC	−20 to +110 °C
YSP-0603R471P080	80 °C	95 ± 5 °C	110 ± 7 °C	32 V DC	−20 to +120 °C
YSP-0603R471P090	90 °C	105 ± 5 °C	120 ± 7 °C	32 V DC	−20 to +130 °C
YSP-0603R471P100	100 °C	115 ± 5 °C	130 ± 7 °C	32 V DC	−20 to +140 °C
YSP-0603R471P110	110 °C	125 ± 5 °C	140 ± 7 °C	32 V DC	−20 to +150 °C
YSP-0603R471P120	120 °C	135 ± 5 °C	150 ± 7 °C	32 V DC	−20 to +160 °C
YSP-0603R471P130	130 °C	145 ± 5 °C	160 ± 7 °C	32 V DC	−20 to +160 °C

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Part-number structure — example YSP-0603R471P100

YSP-Chip PTC Thermistor

0603Size 1.6 × 0.8 mm

R471R25 = 47 × 10¹ Ω = 470 Ω

PR25 tolerance ±50%

100Curie point 100 °C

Dimensions & recommended land pattern

Type	L	W	H	Land A	Land B	Land C
NTC 0201	0.6 ± 0.03	0.3 ± 0.03	0.3 ± 0.03	0.20–0.30	0.25–0.35	0.25–0.35
NTC 0402	1.0 ± 0.05	0.5 ± 0.05	0.5 ± 0.05	0.45–0.55	0.40–0.50	0.45–0.55
NTC 0603	1.6 ± 0.15	0.8 ± 0.15	0.8 ± 0.15	0.6–0.8	0.6–0.8	0.6–0.8
NTC 0805	2.0 ± 0.15	1.25 ± 0.15	0.85 ± 0.15	0.9–1.2	0.7–0.9	0.9–1.2
NTC 1206	3.2 ± 0.15	1.6 ± 0.15	0.85 ± 0.15	1.8–2.5	1.2–1.8	1.5–2.0
Automotive NTC 0603	1.6 ± 0.15	0.8 ± 0.15	0.8 ± 0.15	0.6–0.8	0.6–0.7	0.6–0.8
PTC 0603	1.6 ± 0.15	0.8 ± 0.15	0.8 ± 0.15	0.6–0.8	0.6–0.8	0.6–0.8

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Unit: mm. A = gap between pads, B = pad length, C = pad width. 0201 land pattern is shown for reference. 0805 and 1206 land patterns as listed.

Reliability tests

Chip NTC Thermistor

Test	Condition
Terminal strength	5 N (0402) / 8 N (0603) / 10 N (0805 / 1206), 10 s — no removal or split
Resistance to flexure	1 mm flexure, 30 s — no visible damage
Vibration	1.5 mm, 10–55 Hz, 2 h in each of 3 axes
Drop	1 m onto concrete, 10 times
Solderability	245 ± 5 °C, 3 s, SAC305 — ≥95% coverage
Resistance to soldering heat	260 ± 5 °C, 10 s
Thermal shock	−40 °C / +125 °C, 30 min each, 100 cycles
Low / high temperature storage	−40 °C and +125 °C, 1000 h each
Damp heat	60 °C, 90–95% RH, 1000 h
High-temperature load	85 °C at max. permissible current, 1000 h

Criteria after environmental and soldering-heat tests: no visible damage, ΔR25 within ±5%, ΔB within ±2%.

Chip PTC Thermistor

Test	Condition
Solderability	245 ± 5 °C, 3 s — ≥95% coverage
Resistance to soldering heat	Preheat 150 °C, then 260 ± 5 °C, 10 s
Bending strength	2 mm flexure, 10 s
Adhesive strength	5 N, 10 s
Drop	1 m onto concrete, 10 times
Vibration	1.5 mm, 10–55 Hz, 2 h in each of 3 axes
Cold / dry heat storage	−20 °C and +150 °C, 1000 h each
Temperature cycling	−20 °C / +125 °C, 30 min each, 5 cycles
Damp heat	40 °C, 90% RH, 1000 h
High-temperature load	85 °C at max. voltage, 1000 h

Criteria: no visible damage, ΔR25 within ±20%.

Packaging & storage

Packaging

Type	Carrier	Pcs / reel
NTC 0201	8 mm paper tape	15,000
NTC 0402	8 mm paper tape, 2 mm pitch	10,000
NTC 0603	8 mm paper tape, 4 mm pitch	4,000
NTC 0805	8 mm paper tape, 4 mm pitch	4,000
NTC 1206	8 mm plastic tape	3,000
Automotive NTC 0603	Paper tape	4,000
PTC 0603	8 mm paper tape, 4 mm pitch	Confirmed per order

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Reel: Φ178 mm (7-inch), hub Φ58 mm, arbor hole Φ13.5 mm. Bulk packaging (code B) available for NTC.

Storage

−10 to +40 °C, ≤70% RH, use within 6 months (first-in, first-out)
Avoid corrosive or reducing gases (e.g. HCl, H₂S), flammable gases, oil, water, chemicals and direct sunlight
After opening, reseal promptly or store in a sealed container with desiccant
Solderability is guaranteed for 3 months from delivery under these conditions; re-check before use after that

Recommended reflow profile

Stage	Chip NTC	Chip PTC
Preheat	150–200 °C, 60–120 s	150–200 °C, 60–180 s
Time above 217 °C	60–90 s	60–150 s
Peak temperature	260 °C, 10 s max.	255–260 °C, 20–40 s
Ramp rate	≤3 °C/s up, ≤6 °C/s down	—
Solder	Sn/3.0Ag/0.5Cu	Sn/3.0Ag/0.5Cu
Reflow cycles	2 max.	2 max.

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Hand soldering

Iron power ≤30 W, tip diameter ≤1.0 mm
Preheat 150 °C / 60 s
Tip temperature ≤350 °C, ≤3 s, once only
Do not touch the terminations with the iron tip

Profiles are for reference; the actual profile depends on your board design, solder paste and process.

Datasheets & documents

Request a datasheet

Series datasheets (Chip NTC Thermistor, automotive-grade 0603 NTC, Chip PTC Thermistor) with full R–T data, and third-party RoHS, REACH (SVHC) and halogen-free test reports for the NTC series, are sent with your quotation or on request.

Request datasheet & quote Email sales@yushielectronics.com

What to tell us

NTC or PTC, and package size
NTC: R25, B25/50, tolerances; automotive grade if required
PTC: Curie point and sensing threshold
Quantity and destination

Need a quotation or datasheet?

Send your part number, or the target R25, B value / Curie temperature, package and quantity.

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