Resistors
SCSI Termination Resistor network
Low Voltage Differential (LVD)
BB1020DT Series
SPI-2 (Ultra2) and SPI-3 (Ultra3) compliant
Each network contains LVD termination for up to 9 lines
Superior high frequency performance
Minimal stray capacitance and inductance
Surface mountable with automatic pick and place equipment
Make Possible
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Description
Model BB1020DT is a SCSI LVD termination network designed to terminate high performance SPI-2 (Ultra2) and
SPI-3 (Ultra3) bussed applications. Wide SCSI bus applications can be terminated with three BB1020DT net-
works and a linear regulator IC.
For use in high-speed SCSI bus applications, the BB1020DT utilizes thick film resistors on a ceramic substrate
with ball grid array (BGA) terminals. Resistors and solder balls reside on the same side of the ceramic substrate,
resulting in the absolute minimum stray capacitance and inductance.
Schematics
R1 = 475
R2 = 121
(18 places)
(9 places)
Electrical
1
Resistance Nominal (R1 & R2)
Absolute Tolerance
Temperature Coefficient of Resistance
Interlead Capacitance, Maximum
Operating Temperature Range
Power Rating (per network @ 70°C)
1 Specification subject to change without notice.
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
www.ttelectronicsresistors.com
475Ω, 121Ω
±1%
±100 ppm/°C
0.1 pF
-55°C to +125°C
1 Watt
© TT Electronics plc
07.14
SCSI Termination Resistor network
Low Voltage Differential (LVD)
BB1020DT Series
Make Possible
Mechanical
Solder Ball Finish (for non-RoHS)
Solder Ball Co-planarity
Substrate Material
Resistor Material
SnPbAg 10/88/2
0.15 mm
Al
2
O
3
Cermet
Ordering Information
2
Reel Size (inches)
BB1020DT7
BB1020DTLF7
BB1020DT13
BB1020DTLF13
7
7
13
13
Quantity/Reel
1000
1000
4000
4000
RoHS compliant
3
No
Yes
No
Yes
Outline Drawing
Application Notes
2 Contact our customer service for custom designs and features.
3 Consult factory for availability.
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
www.ttelectronicsresistors.com
© TT Electronics plc
07.14
PCB设计
