4B04B-501-500 Bourns Inc., 4B04B-501-500 Datasheet - Page 3

• Manufacturer Part Number: 4B04B-501-500
• Description: Resistor Networks & Arrays 4PIN 50ohms 2 Matched Resistors
• Manufacturer: Bourns Inc.
• Type: Networkr
• Series: 4Br

Specifications of 4B04B-501-500

• Technology: Thick Film
• Resistance: 50Ohm
• Power Rating Per Resistor: 2W
• Number Of Resistors: 2
• Tolerance (+ Or -): 1%
• Circuit Designator: ISOL
• Package / Case: SIP
• Mounting Style: Through Hole
• Temperature Coefficient: ±100
• Military Standard: Not Required
• Operating Temp Range: -55C to 125C
• No. Of Terminals: 4
• Case Style: Molded
• Failure Rate: Not Required
• Termination Style: Pin
• Terminal Pitch: 15.24
• Product Length (mm): 50.08mm
• Product Depth (mm): 2.29mm
• Product Height (mm): 12.7mm
• Product Type: Networks
• Circuit Type: Isolated
• Tolerance: 1 %
• Power Rating: 2 Watts
• Number Of Pins: 4
• Operating Temperature Range: - 55 C to + 125 C
• Dimensions: 12.7 mm W x 2.29 mm H
• Body Material: Alumina
• Lead Free Status / RoHS Status: Not Compliant

device geometries and higher densities make circuits suscepti-
ble to electrical over stress. Applications include instances
where faster processing speeds having less inherent filtering
make circuits more susceptible to noise. Also, when vulnerable
ICs are used in less-controlled environments, circuits can be
exposed to extreme electrical conditions.
transverse or differential (Figure 4) and (2) longitudinal, i.e., com-
mon (Figure 5). In the metallic surge mode, earth or ground is
not involved. Both conductors are metal. Surge current flows
from tip to ring or ring to tip. The longitudinal surge mode
involves a connection in which the wave is applied between one
or more lines and ground. The longitudinal surge current flows
from tip to ground and ring to ground.
(JOULES)
ENERGY
Common Surge Modes
Surge protection is necessary in situations where smaller
There are two common surge modes: (1) metallic, i.e., normal,
4B04B-50X-RC - Surge Line Protection Modules
12
11
10
9
8
7
6
5
4
3
2
1
Figure 5. Typical Longitudinal Application Mode
Figure 4. Typical Metallic Application Mode
10 x 700 µSEC 1 kV
Rs = 40
(IEC 801-5 SPEC)
(EXAMPLE: LOAD RESISTOR = 50Ω)
3.4
Ω
Figure 3. Energy Comparison
Ring
Tip
Ring
Tip
TELECOM
CIRCUIT
TELECOM
CIRCUIT
10 x 1000 µSEC 1 kV
Rs = 10
(BELLCORE GR-NWT-001089 SPEC)
G
G
10.0
Ω
for telecommunication protection circuits and consists of two
high-power surge resistors, which are utilized in the sec-
ondary protection block of central office switch systems
(Figure 6). This device protects sensitive circuitry from light-
ning strikes and power cross-conditions by limiting irregular
currents through the system.
between 50 and 100 ohms, resistors that are able to withstand
lightning and power conditions per Bellcore specification GR-
NWT-001089, noise reduction through close-ratio matching (±
percent) between tip and ring resistor pairs and superior material
systems created especially for high-power, high-reliability prod-
ucts and applications.
Bourns Line Protection Networks
The Bourns Line Protection Network provides current limiting
The line protection network features a resistance range
Customers should verify actual device performance in their specific applications.
Telephone
Line
Figure 6. Surge Causes
Specifications are subject to change without notice.
Protection
Primary
CENTRAL OFFICE
Secondary
Protection
Power Lines
SLIC