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High Temperature Resistant Sealed SMD NTC Thermistor SMDNTC3225N03005MK0 for

China High Temperature Resistant Sealed SMD NTC Thermistor SMDNTC3225N03005MK0 for

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High Temperature Resistant Sealed SMD NTC Thermistor SMDNTC3225N03005MK0 for

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Operating Temperature	-40℃~+175℃
Description	SMD,8.1x6mm NTC Thermistors RoHS
Mfr. Part #	SMDNTC3225N03005MK0
Package	SMD,8.1x6mm
Model Number	SMDNTC3225N03005MK0

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Product Details
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Product Specification


Operating Temperature	-40℃~+175℃	Description	SMD,8.1x6mm NTC Thermistors RoHS
Mfr. Part #	SMDNTC3225N03005MK0	Package	SMD,8.1x6mm
Model Number	SMDNTC3225N03005MK0

Product Overview

The SMD-3225 Series Sealed SMD NTC Thermistors are designed for circuit protection and various electronic applications. These thermistors feature advanced encapsulation technology with UL94-V0 rated materials, offering a compact size and excellent high-temperature and high-humidity performance. They possess strong surge suppression capabilities and are suitable for lead-free reflow/wave soldering automatic placement due to their SMD tape and reel packaging.

Product Attributes

Brand: Songtian ()
Product Type: Sealed SMD NTC Thermistor
Series: SMD-3225
Encapsulation Material: Meets UL94-V0
Packaging: SMD Tape and Reel
Soldering Compatibility: Lead-free Reflow/Wave Soldering

Applications

Circuit Protection
Industrial Equipment
Communication Equipment
Consumer Electronics
Automotive Electronics

Technical Specifications

Part Number Coding Principle

SMD NTC 3225 N 2R5 05 M 0

NTC: Negative Temperature Coefficient Thermistor
3225: Model, approximately 8.1*6.0mm
N: Inner fold lead shape
W: Outer fold lead shape
2R5: 25 Zero-Power Resistance (e.g., 2R5 = 2.5)
05: Maximum Steady State Current (e.g., 5.0A)
M: Resistance Tolerance (e.g., M = 20%)

Product Marking Example

1. Songtian Logo
2. NTC (Negative Temperature Coefficient Thermistor)
3. 3225 (Size: approx. 8.1*6.0mm)
4. 050 (25 Zero-Power Resistance: 5.0)
5. M (Capacity Tolerance: M (20%))

Product Dimensions (mm)

Outer Fold (W)

Parameter	Value
L	8.1 0.3
L1	10.0 0.3
W	6.0 0.3
L2	11.4 0.3
H	2.5 0.3
L3	0.5 0.3
W1	2.5 0.3
T	0.15 0.01

Inner Fold (N)

Parameter	Value
L	8.1 0.3
L1	8.5 0.3
W	6.0 0.3
L2	6.0 Min
H	2.5 0.3
L3	1.1 0.3
W1	2.5 0.3

Pad Dimensions (mm)

Outer Fold (W)

Parameter	Value
a	10.0 0.2
b	2.2 0.2
c	3.6 0.2

Inner Fold (N)

Parameter	Value
a	5.7 0.2
b	1.65 0.2
c	3.0 0.2

Electrical Performance

Model	Rated Zero-Power Resistance @25 ()	Max. Steady State Current @25 (A)	Max. Residual Resistance under Max. Steady State Current @25 ()	B Value (K) 10%	Thermal Time Constant (S)	Thermal Dissipation Coefficient (mW/)	Operating Temperature Range ()
SMDNTC32251R505*	1.5	5	0.065	2600	<43	>13	-40175
SMDNTC322502005*	2	5	0.085	2600	<43	>13	-40175
SMDNTC32252R505*	2.5	5	0.095	2600	<43	>13	-40175
SMDNTC322503005*	3	5	0.100	2600	<43	>13	-40175
SMDNTC322504004*	4	4	0.150	2600	<44	>13	-40175
SMDNTC322505004*	5	4	0.156	2800	<45	>13	-40175
SMDNTC322506003*	6	3	0.240	2800	<45	>13	-40175
SMDNTC32256R803*	6.8	3	0.245	2800	<45	>13	-40175
SMDNTC322507003*	7	3	0.2824	2800	<45	>13	-40175
SMDNTC322508003*	8	3	0.255	2800	<47	>14	-40175
SMDNTC322510003*	10	3	0.275	2800	<47	>14	-40175
SMDNTC322512002*	12	2	0.462	2800	<48	>14	-40175
SMDNTC322513002*	13	2	0.465	2800	<50	>14	-40175
SMDNTC322515002*	15	2	0.468	2800	<50	>14	-40175
SMDNTC322516002*	16	2	0.470	2800	<50	>14	-40175
SMDNTC322518002*	18	2	0.495	3000	<52	>15	-40175
SMDNTC322520002*	20	2	0.512	3000	<52	>15	-40175
SMDNTC322522002*	22	2	0.563	3000	<52	>15	-40175
SMDNTC322525002*	25	2	0.623	3000	<52	>15	-40175
SMDNTC3225300S5*	30	1.5	0.667	3000	<52	>15	-40175
SMDNTC3225330S5*	33	1.5	0.734	3000	<52	>15	-40175
SMDNTC3225470S5*	47	1.5	1.002	3000	<52	>15	-40175
SMDNTC3225500S5*	50	1.5	1.021	3000	<52	>15	-40175
SMDNTC3225600S5*	60	1.5	1.215	3000	<52	>15	-40175
SMDNTC3225800S2*	80	1.2	1.656	3200	<52	>15	-40175
SMDNTC3225101S1*	100	1.1	2.053	3200	<50	>15	-40175
SMDNTC3225121S1*	120	1.1	2.253	3200	<50	>15	-40175
SMDNTC322520101*	200	1	4.121	3200	<50	>13	-40175

Reliability Testing

No.	Item	Test Method	Standard
1	Vibration	Frequency: 10~55Hz, Amplitude: 0.75mm, Direction and Time: X, Y, Z axes each 2 hours	No visible damage, Resistance change rate: 10%
2	Solderability	Temperature: 2455, Time: 30.5s	Uniform tinning and area 95%
3	Resistance to Soldering Heat	Immerse product leads in 2605 solder liquid for 101 seconds, then remove.	Resistance change rate: 10%
4	High Temperature Storage	Store at 1252 for 1000+48 hours, test after 2 hours static.	Resistance change rate: 20%
5	Humidity Resistance	1. Place product in 402, 90-95% humidity environment for 1000 hours. 2. Place product in 402, 90-95% humidity environment with 1/20 of max. dissipation voltage applied (not less than 0.5V) for 500 hours.	Resistance change rate: 20%
6	Cold and Hot Shock	-4030min 255min 12530min 255min, 5 cycles total.	Resistance change rate: 20%
7	Endurance Test	1. 255, Imax, 1000h; 2. 255, Imax, (1min ON /5min OFF) * 1000 times.	No visible damage, Resistance change rate: 20%
8	Insulation Withstand Voltage	Apply 750Vac voltage for 1 minute between a tight coil of metal wire around the product surface encapsulation and the leads.	No external damage.

Packaging Information

Tape Packaging Specifications (Unit: mm)

SPEC	Inner Fold (N)				Outer Fold (W)
SPEC	A0	B0	K0	P	P0	P2	T	N()	W()
Value	6.350.1	8.450.1	3.250.1	8.00.1	4.00.1	2.00.1	0.30.05	6.160.1	11.900.15	3.100.1	8.00.15	4.00.15	2.00.15	0.30.05

Component/Reel

SPEC	Value (N)	Value (W)
Components/Reel	4000pcs	4000pcs

15-inch Reel Dimensions (Unit: mm)

SPEC	Inner Fold (N)
SPEC	Value	Value
E0.5	2.3	2.3
F0.5	10.75	10.75
W0.2	16.4	24.4
T10.3	2.2	2.2
T20.3	2.2	2.2
A+0/-2	380	380
N3.0	100	100
D0.3	13.3	13.3

Soldering Instructions

Lead-Free Reflow Soldering Curve

When soldering reflow capacitors, it should be performed under the following conditions:

Soldering Temperature: 230260
Soldering Time: 1030s
Preheating Temperature: 170 max

Wave Soldering Curve

(Curve data not provided in source)

Soldering Iron Rework Conditions

Condition	Value
Soldering Iron Tip Temperature	400 (max.)
Soldering Time	3.5 sec (max.)
Soldering Iron Power	50W (max.)

Storage Environment

Store products under the following conditions and use within 6 months after delivery.
Temperature: 10~30, Relative Humidity: 60% max.
Solder NTC within 168 hours after opening the moisture-proof packaging. After opening, store the NTC in the moisture-proof packaging with a desiccant and HIC card, maintaining the above conditions.
If the storage period exceeds 6 months, or the indicator color of the accompanying HIC card changes after opening the package, baking (60 * 168hr) is required before soldering.
Reference data for baking when product humidity exceeds requirements before reflow soldering, or when exposure time exceeds bare lifespan after package opening (bare lifespan starts from zero after baking): (Data not provided in source)
Do not store products in corrosive substances such as sulfur, chlorine gas, or acids, as this may cause lead oxidation and reduce solderability.
To avoid the influence of moisture, dust, etc., products should be stored on shelves.
When stored in a warehouse, avoid thermal shock, vibration, and direct sunlight.

Usage Precautions

The operating ambient temperature should be within the specified range of the technical conditions.
Do not install close to heat-generating or combustible components. Maintain a gap of more than 3mm to avoid damaging the components.
Wear gloves when handling the leads.
This specification guarantees the quality of our products as individual components. When our products are installed in your products, please ensure that your products have been effectively evaluated and confirmed according to your company's specifications.
If your company's trial use of our products exceeds the product functions defined in this test specification, we will not be responsible for any failures caused.
When an NTC is damaged, the failure may result in a short circuit. To prevent dangerous situations such as overheating, smoking, or fire during a short circuit, please use components like fuses in the circuit to set up an automatic fail-safe function.

2508261540_STE-SMDNTC3225N03005MK0_C50751508.pdf

Company Details

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Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa... Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa...

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