chip Nanjing Shiheng Elec CMFB 104F3950 NTC thermistor designed for temperature control in automotive systems
NTC Thermistors - Chip Type
Product Overview
This document details the specifications for the CMFB 104F3950 Chip NTC Thermistor, manufactured by Nanjing Shiheng Electronic Technology Co., Ltd. These thermistors are designed for precise temperature sensing and control applications. Key features include a wide operating temperature range, high accuracy, and reliable performance across various environmental conditions, making them suitable for industrial electronics, automotive systems, and consumer appliances.
Product Attributes
- Brand: Shiheng
- Manufacturer: Nanjing Shiheng Electronic Technology Co., Ltd.
- Origin: China
- Product Type: Chip NTC Thermistor
Technical Specifications
| Part Number | Resistance (25) (k) | B Constant (25/50) (K) | B Constant (25/85) (K) | Permissible Operating Current (25) (mA) | Dissipation Factor (mW/) | Thermal Time Constant (s) | Rated Power (25) (mW) | Operating Ambient Temperature () |
|---|---|---|---|---|---|---|---|---|
| CMFB 104F3950 | 100 | 3950 | 3987 | 0.14 | 1.0 | <5 | 100 | -40+125 |
Dimensions (Type B [0805])
| Type | L | W | T | a | A | B | C |
|---|---|---|---|---|---|---|---|
| B [0805] | 0.0790.008 [2.00.2] | 0.0490.008 [1.250.2] | 0.0330.008 [0.850.2] | 0.0200.012 [0.50.3] | [1.0-1.1] | [0.6-0.7] | [1.0-1.2] |
Product Identification Breakdown
- CMF: Chip NTC Thermistor
- B: External Dimensions (Type B)
- 104: Nominal Zero-Power Resistance at 25 (100 k)
- F: Tolerance of Resistance (1%)
- 3950: B Value Constant (3950K)
Storage Conditions
- Storage Temperature: -1040
- Relative Humidity: 75%RH
- Other: Avoid dust, corrosive atmosphere, and direct sunlight.
- Storage Period: 6 Months
Recommended Soldering Technologies (Re-flowing Profile)
- Ramp: 1~2 /sec.
- Pre-heating: 150~190/9030 sec.
- Time above 240: 20~40 sec.
- Peak temperature: 260 Max./10 sec.
- Solder paste: Sn/3.0Ag/0.5Cu
- Max. re-flowing times: 2
Recommended Soldering Technologies (Iron Soldering Profile)
- Iron soldering power: Max. 30W
- Pre-heating: 150/60 sec.
- Soldering Tip temperature: 350 Max.
- Soldering time: 3 sec Max.
- Solder paste: Sn/3.0Ag/0.5Cu
- Max. iron soldering times: 1
- Note: Do not apply the tip of the soldering iron to the terminal electrodes.
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