NTC Thermistors R44E Series
This document details the R44E series of NTC thermistors designed for temperature sensing and compensation applications. These components are available in various sizes, lead types, and temperature characteristics to suit diverse industrial needs.
Product Attributes
- Brand: MURATA
- Origin: EU RoHS Compliant
Technical Specifications
| Product ID | Series | Size (L x W) | Resistance Tolerance | Temperature Characteristics (Nominal B-Constant) | Packaging | Resistance () | Lead Wire Type | Shape of Lead Wire | Dimensions (Full Length) |
|---|---|---|---|---|---|---|---|---|---|
| NC | Chip Type | 0201 (0.60 x 0.30mm) | 0.5%, 1%, 3%, 5% | 31003149K, 32503299K, 33503399K, 35003549K, 36503699K, 39003949K, 39503999K, 40504099K, 41504199K, 42504299K, 44504499K, 45004549K | Plastic Taping 4mm Pitch (4000 pcs.), Paper Taping 4mm Pitch (4000 pcs.), Paper Taping 2mm Pitch (10000 pcs.), Paper Taping 2mm Pitch (15000 pcs.) | 102 (1k), 103 (10k), 104 (100k) | N/A | N/A | N/A |
| NC | Chip Type | 0402 (1.00 x 0.50mm) | 0.5%, 1%, 3%, 5% | 31003149K, 32503299K, 33503399K, 35003549K, 36503699K, 39003949K, 39503999K, 40504099K, 41504199K, 42504299K, 44504499K, 45004549K | Plastic Taping 4mm Pitch (4000 pcs.), Paper Taping 4mm Pitch (4000 pcs.), Paper Taping 2mm Pitch (10000 pcs.), Paper Taping 2mm Pitch (15000 pcs.) | 102 (1k), 103 (10k), 104 (100k) | N/A | N/A | N/A |
| NC | Chip Type | 0603 (1.60 x 0.80mm) | 0.5%, 1%, 3%, 5% | 31003149K, 32503299K, 33503399K, 35003549K, 36503699K, 39003949K, 39503999K, 40504099K, 41504199K, 42504299K, 44504499K, 45004549K | Plastic Taping 4mm Pitch (4000 pcs.), Paper Taping 4mm Pitch (4000 pcs.), Paper Taping 2mm Pitch (10000 pcs.), Paper Taping 2mm Pitch (15000 pcs.) | 102 (1k), 103 (10k), 104 (100k) | N/A | N/A | N/A |
| NXF | Thermo String Type | 0402 (1.00 x 0.50mm) | 1% | 33503399K, 39003949K, 40504099K, 42504299K | Bulk | 103 (10k), 473 (47k), 104 (100k) | 0.3mm Copper Lead Wire with Polyurethane Coat, 0.3mm Nickel Copper Lead Wire with Enamel Coat | Twisted Lead Wire Type, Standard Type (Cooper Wire Type), Standard Type (Nickel Copper Wire Type), Commercial Type | 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm |
| NXR | Lead Type | 0402 (1.00 x 0.50mm) | 1%, 3%, 5% | 33503399K, 35003549K, 39003949K, 40504099K, 42504299K | Ammo Pack Taping, Bulk | 202 (2.0k), 103 (10k), 104 (100k) | 0.4mm Copper-clad Fe Wire, Tinned (Lead Type), 0.46mm Cu Wire with Coat (Lead Insulation Type) | Lead Spacing 2.5mm, Lead Spacing 5.0mm, Lead Spacing 2.5mm (Insulation Type) | 10mm (Taping Type), 16mm (Taping Type), 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm |
Basic Characteristics
Zero-power Resistance: R (Resistance in ambient temperature T (K))
B-Constant: R=R0 expB (1/T1/T0) (B= n (R/R0) / (1/T1/T0))
Thermal Dissipation Constant: P=C (T2T1) (C: Thermal dissipation constant (mW/C))
Thermal Time Constant: Period in which the thermistor's temperature will change 63.2% of its temperature difference from ambient temperature.
Performance Item:
- Resistance: Measured by zero-power in specified ambient temperature.
- Maximum Operating Current: Possible to keep thermistor's temperature rising max. 0.1C.
- Thermal Dissipation Constant: Shows necessary electric power that Thermistor's temperature rises 1C by self-heating. Calculated by the formula (mW/C).
- B-Constant: Calculated between two specified ambient temperatures by the formula. T and T0 are absolute temperature (K).
2410010103_muRata-NCP18WD683E03RB_C440251.pdf
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