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TT Electronics CR Series CECC-Approved SMD Resistors

TT Electronics' Welwyn CR series is a high reliability thick film chip resistor manufactured in the UK under a tightly controlled process.

  • CECC approved (40401-003/4/8)
  • High reliability
  • Available in sizes 0805 and 1206
  • Tolerances 1%
  • Terminations have a nickel barrier layer

Product Description

TT Electronics' Welwyn CR series is a high reliability thick film chip resistor.
It is manufactured in the UK under a tightly controlled process and is used in military and aerospace sectors and critical applications including trans-oceanic cable repeaters and medical monitors.

Under typical application conditions with low applied power, CR series offers FIT < 0.1 x 10-9 h-1, based on ongoing lot testing. These products are released to CECC 40401-003/4/8 giving the assurance of manufacturing and lot release procedures which are subject to third party audit.
The range offers values from 1R0 to 47M in 1% tolerance with a TCR for values of 10R and above of 100ppm/°C. The 0805 size is rated at 125mW, 100V and the 1206 size at 250mW, 200V and the operating temperature range is -55 to +155°C. The thick film material used to form the resistive element is processed to give typical full load stability at 1000 hours of 0.25%, whilst the typical stability with negligible load at 12 months is 0.02%.

Typical applications

Military and aerospace sectors; Critical applications, including trans-oceanic cable repeaters and medical monitors.

Resistance range

1 ohm to 100M ohms.

High reliability

100% high temperature and overload screened versions available.

Product Series
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  Order Code Manufacturer Part No Manufacturer / Description
Avail Price
Qty
2341044
CR0805F-100KFI

CR0805F-100KFI

WELWYN

RESISTOR, CHIP, 100K, 0.125W, 1%

RESISTOR, CHIP, 100K, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:100kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Volt

375

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    Supplier lead time 8 weeks
2341026
CR0805F-100RFI

CR0805F-100RFI

WELWYN

RESISTOR, CHIP, 100R, 0.125W, 1%

RESISTOR, CHIP, 100R, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:100ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 200ppm/°C; Volta

57

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    Supplier lead time 8 weeks
2341038
CR0805F-10KFI

CR0805F-10KFI

WELWYN

RESISTOR, CHIP, 10K, 0.125W, 1%

RESISTOR, CHIP, 10K, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:10kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Voltag

264

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    Supplier lead time 8 weeks
2341057
CR0805F-10MFI

CR0805F-10MFI

WELWYN

RESISTOR, CHIP, 10M, 0.125W, 1%

RESISTOR, CHIP, 10M, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:10Mohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 250ppm/°C; Voltag

270

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  • 20 will be available for delivery on 24-Dec-2014
  • Supplier lead time 8 weeks
2341019
CR0805F-10RFI

CR0805F-10RFI

WELWYN

RESISTOR, CHIP, 10R, 0.125W, 1%

RESISTOR, CHIP, 10R, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:10ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 200ppm/°C; Voltage

390

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    Supplier lead time 8 weeks
2341032
CR0805F-1K0FI

CR0805F-1K0FI

WELWYN

RESISTOR, CHIP, 1K, 0.125W, 1%

RESISTOR, CHIP, 1K, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:1kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Voltage

276

Price for: TAPE & REEL CUT 1

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    Supplier lead time 8 weeks
2341052
CR0805F-1M0FI

CR0805F-1M0FI

WELWYN

RESISTOR, CHIP, 1M, 0.125W, 1%

RESISTOR, CHIP, 1M, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:1Mohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Voltage

394

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    Supplier lead time 8 weeks
2341012
CR0805F-1R0FI

CR0805F-1R0FI

WELWYN

RESISTOR, CHIP, 1R, 0.125W, 1%

RESISTOR, CHIP, 1R, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:1ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 350ppm/°C; Voltage R

973

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    Supplier lead time 10 weeks
2341048
CR0805F-470KFI

CR0805F-470KFI

WELWYN

RESISTOR, CHIP, 470K, 0.125W, 1%

RESISTOR, CHIP, 470K, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:470kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Volt

399

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    Supplier lead time 8 weeks
2341030
CR0805F-470RFI

CR0805F-470RFI

WELWYN

RESISTOR, CHIP, 470R, 0.125W, 1%

RESISTOR, CHIP, 470R, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:470ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Volta

246

Price for: TAPE & REEL CUT 1

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    Supplier lead time 8 weeks
2341042
CR0805F-47KFI

CR0805F-47KFI

WELWYN

RESISTOR, CHIP, 47K, 0.125W, 1%

RESISTOR, CHIP, 47K, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:47kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Voltag

355

Price for: TAPE & REEL CUT 1

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  • 50 in stock for next day delivery (Liege stock)
  • 305 in stock for next day delivery (UK stock)

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    Supplier lead time 8 weeks
2341061
CR0805F-47MGI

CR0805F-47MGI

WELWYN

RESISTOR, CHIP, 47M, 0.125W, 1%

RESISTOR, CHIP, 47M, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:47Mohm; Power Rating:125mW; Resistance Tolerance:± 2%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 250ppm/°C; Voltag

577

Price for: TAPE & REEL CUT 1

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  • 362 will be available for delivery on 14-Jan-2015
  • Supplier lead time 10 weeks
2341023
CR0805F-47RFI

CR0805F-47RFI

WELWYN

RESISTOR, CHIP, 47R, 0.125W, 1%

RESISTOR, CHIP, 47R, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:47ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 200ppm/°C; Voltage

280

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    Supplier lead time 8 weeks
2341035
CR0805F-4K7FI

CR0805F-4K7FI

WELWYN

RESISTOR, CHIP, 4K7, 0.125W, 1%

RESISTOR, CHIP, 4K7, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:4.7kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Volta

399

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    Supplier lead time 8 weeks
2341056
CR0805F-4M7FI

CR0805F-4M7FI

WELWYN

RESISTOR, CHIP, 4M7, 0.125W, 1%

RESISTOR, CHIP, 4M7, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:4.7Mohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 250ppm/°C; Volta

350

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  • 40 will be available for delivery on 24-Dec-2014
  • Supplier lead time 8 weeks
2341017
CR0805F-4R7FI

CR0805F-4R7FI

WELWYN

RESISTOR, CHIP, 4R7, 0.125W, 1%

RESISTOR, CHIP, 4R7, 0.125W, 1%; Product Range:WELWYN - CR Series; Resistance:4.7ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Resistor Case Style:0805 [2012 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 350ppm/°C; Voltag

319

Price for: TAPE & REEL CUT 1

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    Supplier lead time 8 weeks
2341095
CR1206F-100KFI

CR1206F-100KFI

WELWYN

RESISTOR, CHIP, 100K, 0.25W, 1%

RESISTOR, CHIP, 100K, 0.25W, 1%; Product Range:WELWYN - CR Series; Resistance:100kohm; Power Rating:250mW; Resistance Tolerance:± 1%; Resistor Case Style:1206 [3216 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Volta

388

Price for: TAPE & REEL CUT 1

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    Supplier lead time 8 weeks
2341076
CR1206F-100RFI

CR1206F-100RFI

WELWYN

RESISTOR, CHIP, 100R, 0.25W, 1%

RESISTOR, CHIP, 100R, 0.25W, 1%; Product Range:WELWYN - CR Series; Resistance:100ohm; Power Rating:250mW; Resistance Tolerance:± 1%; Resistor Case Style:1206 [3216 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 200ppm/°C; Voltag

706

Price for: TAPE & REEL CUT 1

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  • 250 in stock for next day delivery (Liege stock)
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    Supplier lead time 8 weeks
2341089
CR1206F-10KFI

CR1206F-10KFI

WELWYN

RESISTOR, CHIP, 10K, 0.25W, 1%

RESISTOR, CHIP, 10K, 0.25W, 1%; Product Range:WELWYN - CR Series; Resistance:10kohm; Power Rating:250mW; Resistance Tolerance:± 1%; Resistor Case Style:1206 [3216 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Voltage

316

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    Supplier lead time 8 weeks
2341108
CR1206F-10MFI

CR1206F-10MFI

WELWYN

RESISTOR, CHIP, 10M, 0.25W, 1%

RESISTOR, CHIP, 10M, 0.25W, 1%; Product Range:WELWYN - CR Series; Resistance:10Mohm; Power Rating:250mW; Resistance Tolerance:± 1%; Resistor Case Style:1206 [3216 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 250ppm/°C; Voltage

324

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    Supplier lead time 8 weeks
2341069
CR1206F-10RFI

CR1206F-10RFI

WELWYN

RESISTOR, CHIP, 10R, 0.25W, 1%

RESISTOR, CHIP, 10R, 0.25W, 1%; Product Range:WELWYN - CR Series; Resistance:10ohm; Power Rating:250mW; Resistance Tolerance:± 1%; Resistor Case Style:1206 [3216 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 200ppm/°C; Voltage

251

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    Supplier lead time 8 weeks
2341082
CR1206F-1K0FI

CR1206F-1K0FI

WELWYN

RESISTOR, CHIP, 1K, 0.25W, 1%

RESISTOR, CHIP, 1K, 0.25W, 1%; Product Range:WELWYN - CR Series; Resistance:1kohm; Power Rating:250mW; Resistance Tolerance:± 1%; Resistor Case Style:1206 [3216 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Voltage R

550

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    Supplier lead time 8 weeks
2341102
CR1206F-1M0FI

CR1206F-1M0FI

WELWYN

RESISTOR, CHIP, 1M, 0.25W, 1%

RESISTOR, CHIP, 1M, 0.25W, 1%; Product Range:WELWYN - CR Series; Resistance:1Mohm; Power Rating:250mW; Resistance Tolerance:± 1%; Resistor Case Style:1206 [3216 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 100ppm/°C; Voltage R

392

Price for: TAPE & REEL CUT 1

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    Supplier lead time 8 weeks
2341064
CR1206F-1R0FI

CR1206F-1R0FI

WELWYN

RESISTOR, CHIP, 1R, 0.25W, 1%

RESISTOR, CHIP, 1R, 0.25W, 1%; Product Range:WELWYN - CR Series; Resistance:1ohm; Power Rating:250mW; Resistance Tolerance:± 1%; Resistor Case Style:1206 [3216 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 350ppm/°C; Voltage Ra

266

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    Supplier lead time 8 weeks
2341110
CR1206F-22MFI

CR1206F-22MFI

WELWYN

RESISTOR, CHIP, 22M, 0.25W, 1%

RESISTOR, CHIP, 22M, 0.25W, 1%; Product Range:WELWYN - CR Series; Resistance:22Mohm; Power Rating:250mW; Resistance Tolerance:± 1%; Resistor Case Style:1206 [3216 Metric]; Resistor Element Material:Thick Film; Temperature Coefficient:± 250ppm/°C; Voltage

171

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    Supplier lead time 8 weeks
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