Logo

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
Compare Selected
  Order Code Manufacturer Part No Manufacturer / Description
Avail Price
Qty
2341100
CR1206F-470KFI

CR1206F-470KFI

WELWYN

RESISTOR, CHIP, 470K, 0.25W, 1%

RESISTOR, CHIP, 470K, 0.25W, 1%; Product Range:CR Series; Resistance:470kohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperatur

1,192

Price for: Cut Tape 1

1+ £0.96 50+ £0.86 100+ £0.80 500+ £0.76 more…

Buy
  • 1,192 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341012
CR0805F-1R0FI

CR0805F-1R0FI

WELWYN

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

RESISTOR, CHIP, 1R, 0.125W, 1%; Product Range:CR Series; Resistance:1ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature Co

893

Price for: Cut Tape 1

1+ £0.798 50+ £0.704 100+ £0.656 500+ £0.612 more…

Buy
  • 150 in stock for next day delivery (Liege stock)
  • 743 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341069
CR1206F-10RFI

CR1206F-10RFI

WELWYN

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

RESISTOR, CHIP, 10R, 0.25W, 1%; Product Range:CR Series; Resistance:10ohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature C

750

Price for: Cut Tape 1

1+ £1.01 50+ £0.89 100+ £0.82 500+ £0.775 more…

Buy
  • 750 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341032
CR0805F-1K0FI

CR0805F-1K0FI

WELWYN

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

RESISTOR, CHIP, 1K, 0.125W, 1%; Product Range:CR Series; Resistance:1kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature C

681

Price for: Cut Tape 1

1+ £0.855 50+ £0.746 100+ £0.696 500+ £0.643 more…

Buy
  • 78 in stock for next day delivery (Liege stock)
  • 603 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341082
CR1206F-1K0FI

CR1206F-1K0FI

WELWYN

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

RESISTOR, CHIP, 1K, 0.25W, 1%; Product Range:CR Series; Resistance:1kohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature Co

584

Price for: Cut Tape 1

1+ £1.01 50+ £0.89 100+ £0.82 500+ £0.775 more…

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

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341026
CR0805F-100RFI

CR0805F-100RFI

WELWYN

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

RESISTOR, CHIP, 100R, 0.125W, 1%; Product Range:CR Series; Resistance:100ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperatur

671

Price for: Cut Tape 1

1+ £0.798 50+ £0.704 100+ £0.656 500+ £0.612 more…

Buy
  • 57 in stock for next day delivery (Liege stock)
  • 614 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341076
CR1206F-100RFI

CR1206F-100RFI

WELWYN

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

RESISTOR, CHIP, 100R, 0.25W, 1%; Product Range:CR Series; Resistance:100ohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

664

Price for: Cut Tape 1

1+ £1.03 50+ £0.913 100+ £0.849 500+ £0.799 more…

Buy
  • 209 in stock for next day delivery (Liege stock)
  • 455 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    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:CR Series; Resistance:470kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperatu

399

Price for: Cut Tape 1

1+ £0.76 50+ £0.68 100+ £0.64 500+ £0.60 more…

Buy
  • 399 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341080
CR1206F-470RFI

CR1206F-470RFI

WELWYN

RESISTOR, CHIP, 470R, 0.25W, 1%

RESISTOR, CHIP, 470R, 0.25W, 1%; Product Range:CR Series; Resistance:470ohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

395

Price for: Cut Tape 1

1+ £0.96 50+ £0.86 100+ £0.80 500+ £0.76 more…

Buy
  • 395 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341107
CR1206F-4M7FI

CR1206F-4M7FI

WELWYN

RESISTOR, CHIP, 4M7, 0.25W, 1%

RESISTOR, CHIP, 4M7, 0.25W, 1%; Product Range:CR Series; Resistance:4.7Mohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

397

Price for: Cut Tape 1

1+ £0.96 50+ £0.86 100+ £0.80 500+ £0.76 more…

Buy
  • 397 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341052
CR0805F-1M0FI

CR0805F-1M0FI

WELWYN

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

RESISTOR, CHIP, 1M, 0.125W, 1%; Product Range:CR Series; Resistance:1Mohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature C

394

Price for: Cut Tape 1

1+ £0.798 50+ £0.704 100+ £0.656 500+ £0.612 more…

Buy
  • 394 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341019
CR0805F-10RFI

CR0805F-10RFI

WELWYN

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

RESISTOR, CHIP, 10R, 0.125W, 1%; Product Range:CR Series; Resistance:10ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

390

Price for: Cut Tape 1

1+ £0.798 50+ £0.704 100+ £0.656 500+ £0.612 more…

Buy
  • 390 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341056
CR0805F-4M7FI

CR0805F-4M7FI

WELWYN

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

RESISTOR, CHIP, 4M7, 0.125W, 1%; Product Range:CR Series; Resistance:4.7Mohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperatur

390

Price for: Cut Tape 1

1+ £0.76 50+ £0.68 100+ £0.64 500+ £0.60 more…

Buy
  • 40 in stock for next day delivery (Liege stock)
  • 350 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341095
CR1206F-100KFI

CR1206F-100KFI

WELWYN

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

RESISTOR, CHIP, 100K, 0.25W, 1%; Product Range:CR Series; Resistance:100kohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperatur

388

Price for: Cut Tape 1

1+ £1.01 50+ £0.89 100+ £0.82 500+ £0.775 more…

Buy
  • 388 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341102
CR1206F-1M0FI

CR1206F-1M0FI

WELWYN

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

RESISTOR, CHIP, 1M, 0.25W, 1%; Product Range:CR Series; Resistance:1Mohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature Co

379

Price for: Cut Tape 1

1+ £1.01 50+ £0.89 100+ £0.82 500+ £0.775 more…

Buy
  • 379 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341044
CR0805F-100KFI

CR0805F-100KFI

WELWYN

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

RESISTOR, CHIP, 100K, 0.125W, 1%; Product Range:CR Series; Resistance:100kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperatu

375

Price for: Cut Tape 1

1+ £0.798 50+ £0.704 100+ £0.656 500+ £0.612 more…

Buy
  • 20 in stock for next day delivery (Liege stock)
  • 355 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341110
CR1206F-22MFI

CR1206F-22MFI

WELWYN

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

RESISTOR, CHIP, 22M, 0.25W, 1%; Product Range:CR Series; Resistance:22Mohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

375

Price for: Cut Tape 1

1+ £1.01 50+ £0.89 100+ £0.82 500+ £0.775 more…

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

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341035
CR0805F-4K7FI

CR0805F-4K7FI

WELWYN

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

RESISTOR, CHIP, 4K7, 0.125W, 1%; Product Range:CR Series; Resistance:4.7kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperatur

374

Price for: Cut Tape 1

1+ £0.798 50+ £0.704 100+ £0.656 500+ £0.612 more…

Buy
  • 374 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341093
CR1206F-47KFI

CR1206F-47KFI

WELWYN

RESISTOR, CHIP, 47K, 0.25W, 1%

RESISTOR, CHIP, 47K, 0.25W, 1%; Product Range:CR Series; Resistance:47kohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

360

Price for: Cut Tape 1

1+ £1.01 50+ £0.89 100+ £0.82 500+ £0.775 more…

Buy
  • 20 in stock for next day delivery (Liege stock)
  • 340 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341067
CR1206F-4R7FI

CR1206F-4R7FI

WELWYN

RESISTOR, CHIP, 4R7, 0.25W, 1%

RESISTOR, CHIP, 4R7, 0.25W, 1%; Product Range:CR Series; Resistance:4.7ohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

359

Price for: Cut Tape 1

1+ £0.96 50+ £0.86 100+ £0.80 500+ £0.76 more…

Buy
  • 65 in stock for next day delivery (Liege stock)
  • 294 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341042
CR0805F-47KFI

CR0805F-47KFI

WELWYN

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

RESISTOR, CHIP, 47K, 0.125W, 1%; Product Range:CR Series; Resistance:47kohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

343

Price for: Cut Tape 1

1+ £0.76 50+ £0.68 100+ £0.64 500+ £0.60 more…

Buy
  • 39 in stock for next day delivery (Liege stock)
  • 304 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341017
CR0805F-4R7FI

CR0805F-4R7FI

WELWYN

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

RESISTOR, CHIP, 4R7, 0.125W, 1%; Product Range:CR Series; Resistance:4.7ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

281

Price for: Cut Tape 1

1+ £0.76 50+ £0.68 100+ £0.64 500+ £0.60 more…

Buy
  • 17 in stock for next day delivery (Liege stock)
  • 264 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341108
CR1206F-10MFI

CR1206F-10MFI

WELWYN

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

RESISTOR, CHIP, 10M, 0.25W, 1%; Product Range:CR Series; Resistance:10Mohm; Power Rating:250mW; Resistance Tolerance:± 1%; Voltage Rating:200V; Resistor Case Style:1206 [3216 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

242

Price for: Cut Tape 1

1+ £1.01 50+ £0.89 100+ £0.82 500+ £0.775 more…

Buy
  • 242 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    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:CR Series; Resistance:47ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperature

280

Price for: Cut Tape 1

1+ £0.798 50+ £0.704 100+ £0.656 500+ £0.612 more…

Buy
  • 280 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
2341030
CR0805F-470RFI

CR0805F-470RFI

WELWYN

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

RESISTOR, CHIP, 470R, 0.125W, 1%; Product Range:CR Series; Resistance:470ohm; Power Rating:125mW; Resistance Tolerance:± 1%; Voltage Rating:100V; Resistor Case Style:0805 [2012 Metric]; Packaging:Cut Tape; Resistor Element Material:Thick Film; Temperatur

243

Price for: Cut Tape 1

1+ £0.798 50+ £0.704 100+ £0.656 500+ £0.612 more…

Buy
  • 107 in stock for next day delivery (Liege stock)
  • 136 in stock for next day delivery (UK stock)

see cut-off times

 
Check more stock
    Supplier lead time 10 weeks
Compare Selected