PL
IA
N
Features
■
■
■
■
RoHS compliant*
Multiple SCSI termination resistors
Stable thin-film-on-silicon technology
Ultra-miniature packages to JEDEC
standards
Models 2QSP-XX3 and 2NBS-XX3
are obsolete and not recommended
for new designs.
*R
oH
S
CO
M
T
Applications
■
■
■
Single-ended SCSI termination
SCSI host adaptor cards
All SCSI bus devices
Thin Film on Silicon 2QSP / 2NBS-XX3 Dual Terminator
General Information
Package Schematic
16
9
Dual Terminator networks are used to correctly terminate
single-ended SCSI bus lines. The standard R1, R2 combina-
tion ensures that the high frequency component of a signal
transition will see an impedance at the termination equal to
the characteristic impedance of the line. Fabricated with
Tantalum Nitride on Silicon, these resistors feature excellent
stability, TCR and tracking performance. The JEDEC
standard miniature packages offer the most space-efficient
Dual Terminator resistor array available.
R1 R2
R2
R1
Electrical & Environmental Characteristics
Electrical Characteristics
Resistance Range
Tolerance:
Absolute
Ratio
TCR:
Absolute
Tracking
Operating Voltage
ESD
Operating Temperature
Storage Temperature
Environmental Characteristics
Power Rating per Resistor @ 70 °C
Power Rating per Package @ 70 °C:
QSOP:
16 Pin
20, 24 Pin
28 Pin
NBSOIC: 8 Pin
14, 16 Pin
E
T
E
L
O
S
B
O
1
Symbol
R
8
Minimum
220
Nominal
Maximum
750
Unit
Ω
Ω
Ω
ppm/°C
ppm/°C
V
V
°C
°C
Watt
Watt
Watt
Watt
Watt
Watt
±1 %
±0.5 %
±5 %
±2 %
100
25
50
TJ
2K
-55
-65
+125
+150
0.1
Tstg
0.75
1.00
1.12
0.60
1.00
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Thin Film on Silicon 2QSP / 2NBS -XX3 Dual Terminator
Mechanical Characteristics
QSOP Package Dimensions
A
.635
TYP.
(.025)
3.81 - 3.99
(.150 - .157)
Narrow-Body SOIC Package Dimensions
A
1.27
TYP.
(.050)
3.81 - 3.99
(.150 - .157)
PIN 1
1.35 - 1.75
(.053 - .069)
.10 - .25
(.004 - .010)
0-8
°
5.80 - 6.20
(.228 - .244)
E
T
E
L
O
S
B
O
.21 - .31
(.008 - .012)
PIN 1
0.36 - 0.46
(.014 - .018)
1.35 - 1.75
(.053 - .069)
.10 - .25
(.004 - .010)
0-8
°
.19 - .25
(.007 - .010)
.19 - .25
(.007 - .010)
.41 - 1.27
(.016 - .050)
5.80 - 6.20
(.228 - .244)
.41 - 1.27
(.016 - .050)
Model
2QSP16
2QSP20
2QSP24
2QSP28
4.80
8.56
8.56
9.80
-
-
-
-
A
4.98 (.189
8.74 (.337
8.74 (.337
9.98 (.386
-
-
-
-
.196)
.344)
.344)
.393)
Model
2NBS08
2NBS14
2NBS16
A
4.80 - 4.98 (.189 - .196)
8.56 - 8.74 (.337 - .344)
9.80 - 9.98 (.386 - .393)
Governing dimensions are in mm. Dimensions in
parentheses are in inches and are approximate.
JEDEC Reference Number MO-137.
Governing dimensions are in mm. Dimensions in
parentheses are in inches and are approximate.
JEDEC Reference Number MS-012.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Thin Film on Silicon 2QSP / 2NBS -XX3 Dual Terminator
QSOP Package Power Temperature Derating Curve
Narrow-Body SOIC Package Power Temperature Derating Curve
1.25
WATTS
1.0
.75
.50
.25
0
2QSP28
2QSP20, 2QSP24
2QSP16
1.0
WATTS
.8
.6
.4
.2
2NBS14, 2NBS16
2NBS08
25
125
150
AMBIENT TEMPERATURE (
°
C )
50
75
100
0
25
50
75
100
125
150
°
C )
AMBIENT TEMPERATURE (
Schematic
R1 R2
R2 R1
Typical Part Marking
E
T
E
L
O
S
B
O
8 PIN
14 PIN
16 PIN
20 PIN
24 PIN
28 PIN
Standard Resistance Values
Resistor
Designator
R1
R2
R1
R2
R1
R2
Represents total content. Layout may vary.
PIN COUNT
MODEL
CIRCUIT
PIN 1 INDICATOR
(MOLDED INDENT)
MANUFACTURER'S
TRADEMARK
QSP16J
3-221331
YYWW
GRADE
RESISTANCE
CODE
DATE CODE
Resistance
(ohms)
220
330
330
680
750
750
Resistance
Code
221
331
331
681
751
751
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Thin Film on Silicon 2QSP / 2NBS -XX3 Dual Terminator
Dispensing
For large quantities, the product will be dispensed in Tape and Reel (see diagram below).
A0
DIMENSIONS = MM (INCHES)
Package
QSOP
16 Pin
20, 24 Pin
28 Pin
NBSOIC
8 Pin
14 Pin
16 Pin
6.4 (0.252)
6.5 (0.256)
6.5 (0.256)
6.4 (0.252)
6.5 (0.256)
6.5 (0.256)
How To Order
Product Class
Thin-Film-on-Silicon
Standard Package Style
QSP = QSOP
NBS = Narrow-Body SOIC
Pin Count
QSP = 16, 20, 24, 28
NBS = 8, 14, 16
Dispensing
R = Reel
T = Tube
Standard Grade
Tolerance
J=
±5 %
G=
±2 %
F=
±1 %
Circuit
3 = Dual Terminator
2 QSP 20 - T J 3 221331 LF
E
T
E
L
O
S
B
O
B0
K0
A0
B0
K0
Width
Pitch
No. of Pieces No. of Pieces
per 13 reel
per tube
3,500
3,500
3,500
3,500
3,500
3,500
98
56
49
98
56
49
5.2 (0.205)
9.0 (0.354)
10.3 (0.406)
9.0 (0.354)
9.0 (0.354)
9.0 (0.354)
2.1 (0.083)
2.1 (0.083)
2.1 (0.083)
2.1 (0.083)
2.1 (0.083)
2.1 (0.083)
12 (0.472)
16 (0.630)
16 (0.630)
12 (0.472)
16 (0.630)
16 (0.630)
8 (0.315)
8 (0.315)
8 (0.315)
8 (0.315)
8 (0.315)
8 (0.315)
Resistance Value Code
1st three digits specify R1 resistance code.
Last three digits specify R2 resistance code.
Terminations
• LF = 100 % Sn (RoHS Compliant)
Asia-Pacific:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
REV. 11/10
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
京公网安备 11010802033920号
EEWORLD
