MAR40

OBSOLETE Ultra-precision metal film resistor

Lifecycle:

Obsolete

Brand:

Welwyn

Series:

MAR

Alternative Part Number:

None

Distributor Inventory
Data Sheet

Specifications

Series MAR
Application Precision
Mounting Through hole
Package Radial
Technology Metal film
Approval None
Example MPN MAR40V-68K1EI
Termination Options
  • Pb-free
  • Pb-bearing
Power 0.3W
Rated Ambient Temperature 85°C
De-rate to 0W Ambient Temperature 155°C
Max Ambient Temperature 155°C
LEV 250V
Resistance min 20Ω
Resistance max 400kΩ
Critical Resistance (where applying LEV dissipates Pr) 208kΩ
Tolerance 0.005%
TCR 2ppm/°C
Isolation Voltage of Insulation Unspecified: ?V
RoHS Compliant (if Pb-free) Yes (see below)
RoHS Exemption None
China RoHS (if Pb-free) Compliant
REACH Status (if Pb-free) Reviewed to 235 SVHCs (see below)
CMRT Conflict Mineral Status Rev 6.22 Next update May 2023 (see below)
EMRT Extended Mineral Status No EMRT available
Termination Finish (if Pb-free) e3 - Sn hot dipped
Termination Finish (if Pb-bearing) 95/5
How to Specify Pb-Free Part number suffix is not PB
ECCN EAR99
Packing Bulk / box
Quantity 50
Nett Weight Each -
Reflow Process Not applicable
MSL Not applicable
Wave Process Compatible, 260+-5 deg. C, 1 or 2 x 5+-1 seconds contact time
Shelf-life None defined, but solderability test prior to use is recommended after two years from date of manufacture
Launch Date Pre-2000
Lifecycle Obsolete
EOL Date / YTEOL Estimate EOL in Jun 2023
Latest PCN Date 12 Jun 23
Alternative Part Number None

Resources & Technical Documents

  • All (19)
  • Brochure (0)
  • 3D Model (0)
  • Case Study (0)
  • Technical Bulletin (0)
  • Video (0)
  • Policy & Regulations (0)
  • Terms & Conditions (0)
  • White Paper (0)
  • End Of Life (0)
  • Datasheet (1)
  • Application Note (5)
  • Compliance (12)
  • Product Change Notification (1)
Datasheet MAR
Application Note TN001 Advice on Storage Conditions for Fixed Resistors
Application Note TN002 Instant Access to RoHS REACH Conflict Mineral and other Compliance Data Online
Application Note TN003 Methods for Coding Resistor Values in Part Numbers
Application Note TN005 EIA Standard Values for Resistors
Application Note TN007 Instant Access to Life Cycle and Obsolete Product Data Online
Compliance Bedlington ISO 9001
Compliance Bedlington Quality Policy
Compliance Bedlington ISO 14001 2015
Compliance Bedlington Env Policy
Compliance Bedlington ISO 45001 2018
Compliance Bedlington Health and Safety Policy
Compliance RoHS MAR
Compliance REACH Statement Bedlington
Compliance CMRT Conflict Mineral Bedlington
Compliance Proposition 65 Declaration Bedlington
Compliance TSCA Statement Bedlington
Compliance Tin Whisker Report
Product Change Notification PCNs for MAR