EEWORLDEEWORLDEEWORLD

Part Number

Search

PMF1/4-3974-TB25

Description
Fixed Resistor, Metal Film, 0.25W, 3970000ohm, 350V, 0.01% +/-Tol, 25ppm/Cel, Through Hole Mount, AXIAL LEADED
CategoryPassive components    The resistor   
File Size75KB,1 Pages
ManufacturerRCD Components Inc.
Websitehttp://www.rcdcomponents.com/
Download Datasheet Parametric View All

PMF1/4-3974-TB25 Overview

Fixed Resistor, Metal Film, 0.25W, 3970000ohm, 350V, 0.01% +/-Tol, 25ppm/Cel, Through Hole Mount, AXIAL LEADED

PMF1/4-3974-TB25 Parametric

Parameter NameAttribute value
MakerRCD Components Inc.
package instructionAXIAL LEADED
Reach Compliance Codecompli
ECCN codeEAR99
Other featuresULTRA PRECISION
Manufacturer's serial numberPMF
Installation featuresTHROUGH HOLE MOUNT
Number of terminals2
Maximum operating temperature150 °C
Minimum operating temperature-55 °C
Package shapeTUBULAR PACKAGE
method of packingBULK
Rated power dissipation(P)0.25 W
Rated temperature85 °C
resistance3970000 Ω
Resistor typeFIXED RESISTOR
surface mountNO
technologyMETAL FILM
Temperature Coefficient25 ppm/°C
Terminal shapeWIRE
Tolerance0.01%
Operating Voltage350 V
Base Number Matches1
ULTRA PRECISION METAL FILM RESISTORS
RESISTORS CAPACITORS COILS DELAY LINES
PMF SERIES
RoHS
Term.W is
RoHS
compliant
& 260°C
compatible
Tolerances to ±0.01%, TC’s to ±3ppm/°C
Exceptional performance levels
Extremely low noise, reactance, voltage coefficient
All sizes available on Tape & Reel
OPTIONS
Option S: miniature size
Option ER: 100 hour burn-in (full rated W
25°C
)
Also available: matched sets, axial and vertical cut &
formed leads, hi-rel screening, special marking, hermetic
seal, non-standard values, increased power & voltage, etc.
Customized components are an RCD speciality!
RCD’s PMF Series meets the need for ultra-precision performance
when product reliability is a must. Stability levels (comparable
to those of precision wirewound resistors), coupled with the
excellent high-frequency performance of film resistors, makes
the PMF Series the universal choice. State-of-the-art deposition
and trim equipment enables the industry’s widest resistance
range. The exceptional performance of this series provides new
opportunities for circuit designers to obtain the utmost in long
term reliability without the need for post circuit trimming.
H
→←
L
d
D
Inch [mm]
DERATING:
Derate W and V per graph when ambient temp exceeds 85°C
85°
% OF RATED POWER
DIMENSIONS
RCD
Type
PMF1/20
PMF1/10
PMF1/8S
PMF1/8
PMF1/4S
L
± .032 [.8]
.150 [3.8]
.280 [7.1]
.280 [7.1]
.380 [9.6]
.380 [9.6]
.578 [14.7]
.736 [18.7]
D
± .025 [.6]
.065 [1.7]
.105 [2.7]
.105 [2.7]
.140 [3.5]
.140 [3.5]
.189 [4.8]
.250 [6.35]
d
± .003 [.08]
.018 [.45]
.025 [.6]
.025 [.6]
.025 [.6]
.025 [.6]
.025 [.6]
.031 [.8]
.031 [.8]
H (Min.)
.94 [24]
1.1 [28]
1.1 [28]
1.16 [29.5]
1.16 [29.5]
1.16 [29.5]
1.16 [29.5]
1.30 [33]
120
100
80
60
40
20
0
30
50
70
90
110
130
AMBIENT TEMPERATURE (°C)
150
PMF1/4
PMF1/2
PMF1
.79 [20] Max .315 [8] Max
TYPICAL PERFORMANCE
Temp.Coefficient (-20 to +85°C,
25ppm/°C (std), 15ppm,
Ref 25°C)
10ppm, 5ppm, 3ppm
Thermal Shock (-55~ +85°C, 5cyc 1/2hr)
0.02%
Moisture Resist.* (MIL-STD-202, M.106)
0.08%
Resistance to Solder Heat (260°C, 10S)
0.02%
Short Time Overload (2.5x RCWV, 5S,
0.01% (.02% Opt.S)
NTE 1.5xVR)
Life (1000 hrs., full power)
0.02% (.05% Opt.S)
Shelf Life (Max. per year)
50 P P M
Dielectric Strength
500V (300V PMF1/20)
Operating Temperature
-55 to +150°C
* To ensure utmost reliability, care should be taken to avoid potential sources
of ionic contamination.
SPECIFICATIONS
RCD
Type
PMF1/20
PMF1/10
PMF1/8S
PMF1/8
PMF1/4S
PMF1/4
PMF1/2
PMF1
Wattage
@ 85°C
1/20
1/10
1/8
1/8
1/4
1/4
1/2
1
Voltage
Rating*
200
250
250
300
300
350
400
500
Resistance
R an g e
10
to 604K
10
to 1.5Meg
10
to 1.5Meg
10
to 2 Meg
10
to 2 Meg
10
to 5 Meg
10
to 10 Meg
10
to 15 Meg
* Maximum working voltage determined by E = ( PR)
1/2
, E not to exceed value listed in column above.
MATCHED SETS AND NETWORKS
RCD’s experience in matching resistors for sets and
networks can result in an economical solution for many
circuits. Cost savings up to 50% can be achieved by allowing
relatively loose absolute tolerances but tight matching
requirements by pair or set. Resistance matching is
available to 0.01% and T.C. tracking to ±1ppm/°C.
P/N DESIGNATION:
RCD Type
PMF1/10
- 1001
-
Q B 5 W
Options:
S, ER, etc. (leave blank if standard)
Resis. Code:
3 signif. figures & multiplier,
e.g. 1R00= 1Ω, 10R0=10Ω, 1000= 100Ω, 1001=1KΩ,
1002=10KΩ, 1003=100KΩ, 1004=1MΩ,1005=10MΩ
Tol. Code:
F=1%, D=.5%, C=.25%,B=.1%, A=.05%, Q=.02%, T=.01%
Packaging:
B = Bulk, T = Tape & Reel
Temp. Coefficient:
(5=5ppm, 10=10ppm, 25=25ppm, etc.)
Termination:
W= Lead-free, Q= Tin/Lead (leave blank if either is acceptable
RCD Components Inc,
520 E.Industrial Park Dr, Manchester, NH, USA 03109
rcdcomponents.com
Tel: 603
-
669
-
0054 Fax: 603
-
669
-
5455 Email:sales@rcdcomponents.com
FA043C
Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
61
430 Remotely upgrade application via GPRS
I want to do this development recently. I see that all posts are upgraded through the serial port, and they are all modified a little bit based on the original code. Since I don't know much about asse...
moseshuilan Microcontroller MCU
Features of MSP430 MCU and its application in receiver
[p=30, null, left][color=rgb(17, 17, 17)][font=宋体][size=14px][b]I. Introduction[/b][/size][/font][/color][/p][p=30, null, left][color=rgb(17, 17, 17)][font=宋体][size=14px] This is a data broadcast enco...
fish001 Microcontroller MCU
sensorTag activity: Smart level solution
[i=s]This post was last edited by littleshrimp on 2014-3-21 08:28[/i] [align=left][align=center][b][size=14.0pt]Smart Level[/size][/b][/align]The deadline for submitting proposals is approaching. In t...
littleshrimp Wireless Connectivity
Manufacturers/companies that provide ZigBee solutions in Shenzhen
Hello everyone, I am new here, please take care of me... Now here comes the question... Can you recommend or recommend a company that does ZigBee solutions in Shenzhen or its surrounding areas?...
行走天涯 RF/Wirelessly
Research
:loveliness:...
hukai19870325 FPGA/CPLD
STM32F103ZET6 clock RTC crystal oscillator does not oscillate
Our products have already started production. I don't know if it's a welding problem or a worker's operation problem. Now we have produced a total of 470 machines, and 60 of them crashed when updating...
e729 stm32/stm8

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2392  961  2068  322  334  49  20  42  7  26 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号