USF340-1.00M-0.01%-5PPM Caddock Electronics Inc, USF340-1.00M-0.01%-5PPM Datasheet - Page 2

• Manufacturer Part Number: USF340-1.00M-0.01%-5PPM
• Description: RESISTOR 1.00M OHM 0.01% 0.33W
• Manufacturer: Caddock Electronics Inc
• Series: USFr

Specifications of USF340-1.00M-0.01%-5PPM

• Resistance (ohms): 1M
• Power (watts): 0.333W, 1/3W
• Composition: Ceramic
• Temperature Coefficient: ±5ppm/°C
• Tolerance: ±0.01%
• Size / Dimension: 0.750" L x 0.160" W (19.05mm x 4.06mm)
• Height: 0.395" (10.03mm)
• Lead Style: Through Hole
• Package / Case: Radial
• Resistance In Ohms: 1.00M
• Case: Radial
• Resistance: 1 MOhms
• Power Rating: 0.33 Watt (1/3 Watt)
• Voltage Rating: 300 Volts
• Termination Style: Radial
• Operating Temperature Range: - 40 C to + 85 C
• Dimensions: 9.53 mm W x 19.05 mm L x 1.91 mm H
• Lead Spacing: 15.24 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Details
• Other names: USF340-1.00M-0.01%-5PPM; USF340-1.00M-T-5PPM

© 2004 Caddock Electronics, Inc.
Applications Engineering
17271 North Umpqua Hwy.
Roseburg, Oregon 97470-9422
Phone: [phone]
Fax: [phone]
Standard Resistance Values:
USF240 Standard Resistance Values:
Absolute Tolerance: ±0.01% or ±0.10%, Absolute TC: 2ppm/°C
50.0 Ω
100 Ω
200 Ω
250 Ω
USF270 Standard Resistance Values:
Absolute Tolerance: ±0.01% or ±0.10%, Absolute TC: 2ppm/°C
990 K
USF271 Standard Resistance Values:
Absolute Tolerance: ±0.01% or ±0.10%, Absolute TC: 2ppm/°C
9.90 Meg
USF340 Standard Resistance Values:
Absolute Tolerance: ±0.01% or ±0.10%, Absolute TC: 5ppm/°C
50.0 Ω
100 Ω
200 Ω
350 Ω
USF370 Standard Resistance Values:
Absolute Tolerance: ±0.01% or ±0.10%, Absolute TC: 5ppm/°C
990 K
1.00 Meg
USF371 Standard Resistance Values:
Absolute Tolerance: ±0.01% or ±0.10%, Absolute TC: 5ppm/°C
19.8 Meg
Specifications:
Resistance Tolerance: ±0.01% or ±0.10 measured at +23°C ±2°C.
Absolute Temperature Coefficient: TC referenced to +25°C,
ΔR taken at -40°C and +85°C.
Load Life Stability: 2,000 hours at +85°C at rated voltage, not to
exceed rated power, ΔR (+0.015 ±0.015)% max.
10,000 hours at +85°C at rated voltage, not to exceed rated
power, ΔR (+0.030 ±0.030)% max.
Thermal Shock: Mil-Std-202 Method 107 condition A, except min.
temp. is -40°C, ΔR ±0.01% maximum.
Voltage Coefficient:
USF371 at resistances of 9 Meg or greater, 0.02 ppm/volt
maximum.
Shelf Life Stability: Typical +(20ppm ±20ppm)/yr. after 1 year.
Extended shelf life (ten years) 10ppm/year maximum.
Operating Temperature: -40°C to +85°C.
Leadwire: Solder Coated Copper.
Ordering Information USF200 Series:
Ordering Information USF300 Series:
1.00 Meg 2.00 Meg
350 Ω
500 Ω
900 Ω
1.00 K
9.99 Meg 10.0 Meg
400 Ω
500 Ω
700 Ω
1.00 K
1.98 Meg
2.00 Meg
19.98 Meg 20.0 Meg
Type USF Ultra-Stable Low TC Film Resistors
Model Number
Model Number
USF370 - 990K - 0.10% - 5 ppm/°C
USF240 - 10.0 Meg - 0.01% - 2 ppm/°C
1.80 K
2.00 K
4.00 K
5.00 K
2.00 K
2.50 K
5.00 K
9.00 K
4.00 Meg
5.00 Meg
Resistor Value
Resistor Value
10.0 K
20.0 K
25.0 K
50.0 K
10.0 K
18.0 K
20.0 K
40.0 K
5.00 Meg
USF270 at 5 Meg, and USF271, USF370,
9.90 Meg
9.99 Meg
25.0 Meg
90.0 K
99.0 K
100 K
200 K
50.0 K
90.0 K
99.0 K
100 K
CAD
10.0 Meg
For Caddock Distributors listed by country see caddock.com/contact/dist.html
200 Series and 300 Series
Tolerance
(0.01% or 0.10%)
250 K
500 K
1.00 Meg
2.00 Meg
180 K
198 K
200 K
400 K
Tolerance
(0.01% or 0.10%)
500 K
990 K
999 K
1.00 Meg
e-mail: [e-mail] • web: www.caddock.com
DOC
2.50 Meg
5.00 Meg
9.90 Meg
9.99 Meg
2.00 Meg
4.00 Meg
5.00 Meg
9.90 Meg
10.0 Meg
K
9.99 Meg
10.0 Meg
19.8 Meg
19.98 Meg
20.0 Meg
USF 200 Series Circuit Board Connection Note:
Series Resistor must have the two “bonded” resistors in the package connected
in parallel on the circuit board as shown. This parallel connection of the two
resistors achieves the specified resistance with the specified performance.
Custom USF 200 Series and 300 Series Resistors:
USF 200 Series and 300 Series Resistors are available, for high
quantity applications, with custom performance:
• In the 200 Series, Absolute TC to as tight as 1ppm/°C is available
• Matched Ratio TC to as tight as 0.5ppm/°C for equal resistances.
• Matched Ratio TC can be provided in the 200 Series style “bonded”
Other Low TC Resistor Products from Caddock:
• Type TF Low TC Ultra-Precision Film Resistors (1K to 125Meg)
• Type TN Lab Grade Low TC Precision Film Resistors
• Type TK Low TC Precision Radial-Lead Film Resistors
• Type TG Low TC Precision High Voltage Resistors (up to 30KV)
• T912 and T914 Low TC Ultra-Precision Resistor Networks
• Type USVD Ultra-Stable Voltage Dividers (up to 2500V)
• Type THV Precision High Voltage Dividers (up to 20KV)
Circuit Board Trace
Front View
for certain resistances.
Resistor pairs.
Top View
Front View
(.81 DIA.)
(.81 DIA.)
.032 DIA.
.032 DIA.
CADDOCK
CADDOCK
USF240
USF340
0418
0412
A
A
USF 200 Series
USF 300 Series
Fig. 1
Fig. 2
(12.70 ±3.18)
(12.70 ±3.18)
.50 ±.125
D
.50 ±.125
D
B
B
Riverside, California 92507-2364
Sales and Corporate Office
Phone: [phone]
Dimensions in inches
and (millimeters)
1717 Chicago Avenue
Dimensions in inches
and (millimeters)
(seated height)
The Type USF 200
Fax: [phone]
Side View
(seated height)
Side View
Circuit Board Trace
(5.08 ±.51)
(4.06 ±.76)
.200 ±.020
.160 ±.030
.075 ±.020
(1.91 ±.51)
C
C
28_IL134.1004
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