TaNFilm Precision Chip Resistors – PFC Series

Category: Electronics, Resistors, TT Electronics PLC

The datasheet presents an overview of the TaNFilm Precision Chip Resistors from the PFC Series by TT electronics Welwyn Components. These resistors are designed for applications demanding high precision and stability, with versions that comply with MIL-PRF-55342 military specifications. The resistors employ a passivated Tantalum Nitride film which ensures long-term stability and moisture resistance.

Electrical Data

The datasheet lists various characteristics of the resistors including power ratings, maximum voltage ratings, operating temperature range, and noise levels for three different sizes:

0603 with 0.1W power rating at 70°C, 75V maximum voltage rating.
0805 with 0.1W power rating at 70°C, 100V maximum voltage rating.
1206 with 0.25W power rating at 70°C, 200V maximum voltage rating.

All resistor sizes operate within a temperature range of -55°C to +150°C and have noise levels below -25dB, using a high purity alumina substrate.

Manufacturing Capabilities

The datasheet details the resistors’ manufacturing capabilities, which include a range of Temperature Coefficient of Resistance (TCR) options and ohmic ranges, along with the respective tolerance levels available. The TCR options vary from ±25 to ±100 ppm/°C, with ohmic ranges spanning from 5 ohms to 1M ohm, depending on the size of the component (0603, 0805, or 1206). Tolerances are as tight as ±0.02%, represented by letter codes (J, G, F, D, B, A, Q), which denote precision levels.

Additional Features

The resistors feature wrap-around terminations with a solder coating and a nickel barrier that is resistant to leaching, which promotes high-quality solder connections during harsh surface mount soldering environments. The datasheet also specifies that a MIL-PRF-55342 qualified version is available, which attests to the suitability of these resistors for military applications.

General Note

Welwyn Components reserves the right to modify product specifications without notice or liability. The information provided is considered accurate at the time of publication, and all data should be verified against the company’s most current datasheets. Contact details for Welwyn Components in Bedlington, Northumberland, UK, including telephone, facsimile, and email, are provided for further inquiries. The document states that Welwyn Components is a subsidiary of TT electronics plc and mentions the issue number and date of the datasheet: issue 10.03 as of the 25th of October.