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TT Electronics Welwyn, established in 1939, is a market-leading manufacturer of precision resistors, high-power resistors, and resistor networks for defense, aerospace, medical, and industrial electronics.
Parts that are not part of a series
Company background and product focus
TT Electronics Welwyn, founded in 1939 in Bedlington, England, represents over 80 years of innovation in resistive component technology. As part of TT Electronics' passive components division alongside BI Technologies and IRC, Welwyn delivers precision solutions for the most demanding applications.
The Welwyn product range encompasses:
With an ohmic value range spanning 18 decades, TT Electronics Welwyn serves critical applications in defense and aerospace, medical device equipment, transportation, energy management, and industrial electronics. Designers worldwide rely on Welwyn components for circuit protection, power management, and signal conditioning in products from energy meters to motor drives.
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Product families from TT Electronics/Welwyn
| Series | Category | Parts | Status | Description |
|---|---|---|---|---|
| Series | Category | Parts | Status | Description |
|---|---|---|---|---|
| Chip Resistor - Surface Mount | 14 | Active | ||
| Resistors | 1 | Unknown | ||
| Chip Resistor - Surface Mount | 6 | Unknown | ||
| Chip Resistor - Surface Mount | 26 | Unknown | ||
| Chip Resistor - Surface Mount | 1 | Unknown | ||
| Through Hole Resistors | 1 | Unknown | ||
| Through Hole Resistors | 1 | Unknown | ||
| Through Hole Resistors | 1 | Unknown | ||
| Resistors | 2 | Unknown | ||
| Resistors | 1 | Unknown |
Parts from TT Electronics/Welwyn that are not part of a series
| Part Information | Pricing (lowest) | Composition | Size / Dimension Diameter | Size / Dimension Length | Resistance | Temperature Coefficient | Package Name | Operating Temperature (Max) | Operating Temperature (Min) | Power (Watts) | Package / Case | Features | Tolerance | Number of Terminations |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 TT Electronics/Welwyn BCN164A1003F7 TT ELECTRONICS | Sign in to see pricing | — | — | — | — | — | — | — | — | — | — | — | — | — |
 TT Electronics/Welwyn BCN164A2001F7 TT ELECTRONICS | Sign in to see pricing | — | — | — | — | — | — | — | — | — | — | — | — | — |
TT Electronics/Welwyn BCN164A4751F7 TT ELECTRONICS | Sign in to see pricing | — | — | — | — | — | — | — | — | — | — | — | — | — |
 TT Electronics/Welwyn BCN SERIES 4 ELEMENT 2.2KO | Sign in to see pricing | — | — | — | — | — | — | — | — | — | — | — | — | — |
 TT Electronics/Welwyn RES 22 OHM 2W 10% AXIAL | Sign in to see pricing | Metal Film | 0.157 in | 0.394 in | 22 Ohm | 100 ppm/°C | Axial | 155 °C | -55 °C | 2 w | Axial | Flame Proof, Fusible, Pulse Withstanding, Safety | 10 % | 2 |
TT Electronics/Welwyn RES 47 OHM 2W 10% AXIAL | Sign in to see pricing | Metal Film | 0.157 in | 0.394 in | 47 Ohms | 100 ppm/°C | Axial | 155 °C | -55 °C | 2 w | Axial | Flame Proof, Fusible, Pulse Withstanding, Safety | 10 % | 2 |
TT Electronics/Welwyn RES 68 OHM 2W 10% AXIAL | Sign in to see pricing | Metal Film | 0.157 in | 0.394 in | 68 Ohm | 100 ppm/°C | Axial | 155 °C | -55 °C | 2 w | Axial | Flame Proof, Fusible, Pulse Withstanding, Safety | 10 % | 2 |
 TT Electronics/Welwyn FIXED IND 1UH 10.3A 10 MOHM SMD | Sign in to see pricing | — | — | — | — | — | — | — | — | — | — | — | — | — |
TT Electronics/Welwyn FIXED IND 3.3UH 6.6A 30 MOHM SMD | Sign in to see pricing | — | — | — | — | — | — | — | — | — | — | — | — | — |
 TT Electronics/Welwyn PULSE XFMR 1:1:1 980UH | Sign in to see pricing | — | — | — | — | — | — | — | — | — | — | — | — | — |