Small size STE SMDNTC3225N06003MK0 SMD NTC thermistor with high temperature and

Product Specification

Product Overview

The SMD-3225 Series is a series of encapsulated SMD NTC thermistors designed for circuit protection and temperature sensing applications. Featuring advanced encapsulation technology meeting UL94-V0 standards, these thermistors offer a compact size, excellent high-temperature and high-humidity performance, and strong surge suppression capabilities. They are suitable for automated surface mounting processes using lead-free reflow and wave soldering.

Product Attributes

• Brand: Songtian ()
• Product Type: Encapsulated SMD NTC Thermistor
• Series: SMD-3225
• Encapsulation Material: Meets UL94-V0
• Packaging: SMD Tape Reel
• Soldering Compatibility: Lead-free Reflow/Wave Soldering
• Origin: Shantou Free Trade Zone Songtian Electronic Technology Co., Ltd.

Technical Specifications

Features

• Advanced encapsulation process, encapsulation material meets UL94-V0.
• Compact structure, small size, space-saving.
• Superior high-temperature and high-humidity performance.
• Strong surge suppression capability.
• SMD tape reel packaging, suitable for lead-free reflow/wave soldering automatic mounting.

Applications

• Circuit Protection
• Industrial Equipment
• Communication Equipment
• Consumer Electronics
• Automotive Electronics

Part Numbering Scheme

SMD NTC 3225 N 2R5 05 M 0

• NTC: Negative Temperature Coefficient Thermistor
• Internal Management Code
• Model: SMD
• Size: 3225 (approx. 8.1*6.0mm)
• Lead Shape: N (Inward Fold), W (Outward Fold)
• Zero-Power Resistance @ 25: e.g., 020: 2.0, 2R5: 2.5, 201: 200
• Max. Steady-State Current: e.g., S5: 1.5A, 05: 5.0A
• Resistance Tolerance: L: 15%, M: 20%

Product Marking (Example)

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

Dimensions

Lead Shape W (Outward Fold)

Lead Shape N (Inward Fold)

Electrical Performance

Reliability Experiments

Packaging Information

Tape Packaging Description (Unit: mm)

Carrier Tape Dimensions (Unit: mm)

15-inch Reel Dimensions (Unit: mm)

Carton Packaging

• N: Inward Fold
• W: Outward Fold

Curves

• Resistance-Temperature Characteristic Curve
• Max. Current Derating Curve

ITa = [1-(Ta-25)/(Tu-25)]Imax
TU: Upper Limit of Working Temperature ()
TL: Lower Limit of Working Temperature ()
Ta: Ambient Temperature ()
Imax: Maximum Steady-State Current

Soldering Instructions

Lead-Free Reflow Soldering Curve

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

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

Wave Soldering Curve

Soldering Iron Rework Conditions

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 the moisture-proof packaging, 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 if the indicator color of the accompanying HIC card changes after the package is opened, baking (60 * 168hr) should be performed before soldering.
• Reference data for baking when product humidity exceeds requirements before reflow soldering (the exposure life after baking starts from zero) when the exposure time of opened products exceeds the exposure life, or when other conditions cause the temperature and humidity around the product to exceed requirements.
• Do not store products in corrosive substances such as sulfur, chlorine gas, or acid, as this will cause lead oxidation and reduce solderability.
• To avoid the influence of moisture, dust, etc., products should be stored on shelves.
• Products stored in warehouses should avoid thermal shock, vibration, and direct sunlight.

Usage Precautions

• The operating ambient temperature should be within the range specified by the technical conditions.
• Do not install close to heat-generating or combustible components. Maintain a spacing of more than 3mm to prevent damage to the components.
• Wear gloves when touching the leads.
• This specification guarantees the quality of our products as individual units. 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 thereby.
• 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 incorporate automatic fail-safe functions using components such as fuses in the circuit.