Nichrome Resistor Networks
on Silicon Substrates
SFN08A, SFN08B Series
Isolated and bussed circuits
Thin film resistor network
RoHS compliant
Features
Precision Nichrome Resistors on Silicon
Industry Standard Packaging
Ratio Tolerances
TCR Tracking Tolerances
Passivation coating provides protection in humid environments
8 pad SON
1
4mm square with 0.8 mm pitch (JEDEC MO-229D)
< ± 0.05%
< ± 5 ppm/°C
Schematics
Electrical
2
Standard Resistance Range
3
Resistor Tolerances
Ratio Tolerances
TCR
Operating Temperature Range
Interlead Capacitance
Insulation Resistance
Maximum Operating Voltage
Noise, Maximum (Mil-STD-202, Method 308)
Resistor Power Rating at 70°C
1 Small outline no lead (SON) package is also referred to as quad flat no lead (QFN) or dual flat no lead (DFN) packages.
2 Specifications subject to change without notice.
3 E96 codes available.
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.bitechnologies.com www.irctt.com www.welwyn-tt.com
1K ohms to 100K ohms (Isolated)
1K ohms to 30K ohms (Bussed)
± 0.25%
± 0.05%
Reference TCR table
-55°C to +125°C
< 2 pF
≥
10,000 Megohms
100 Vdc or
PR
-25 dB
0.1 Watts
© TT electronics plc
01. 12
Nichrome Resistor Networks
on Silicon Substrates
SFN08A, SFN08B Series
Package Power And Derating Curve
Model
SFN08
Package Power @ 70°C(watts)
4
0.4
Environmental (MIL-R-83401)
Thermal Shock plus Power Conditioning
Short Time Overload
Terminal Strength
Moisture Resistance
Mechanical Shock
Vibration
Low Temperature Operation
High Temperature Exposure
Resistance to Solder Heat
Marking Permanency
Flammability
Storage Temperature Range
ΔR
0.25%
ΔR
0.1%
ΔR
0.1%
ΔR
0.2%
ΔR
0.25%
ΔR
0.25%
ΔR
0.05%
ΔR
0.1%
ΔR
0.1%
Per MIL-STD-202, Method 215
UL-94V-0 Rated
-55°C to +125°C
Mechanical
Pad Plating
Pad Material
Pad Coplanarity
Substrate Material
Resistor Material
Body Material
100 matte Tin (RoHS compliant)
Copper Alloy
0.003” (0.08 mm)
Silicon
Passivated Nichrome
Molded Epoxy
4 Maximum power per resistor @ 70C is 100 mW, not to exceed package power
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.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
01. 12
Nichrome Resistor Networks
on Silicon Substrates
SFN08A, SFN08B Series
Ordering Information
5
S FN 08 A XXXX F S LF 13
Model Series:
S = Passivated Nichrome
on Silicon
Package Type:
Pad Count:
Circuit Type:
A=Isolated
B=Bussed
Resistance code:
Bulk packaging option:
7=7” Tape & Reel
13 = 13” Tape & Reel
Lead Finish:
LF=Lead Free (RoHS)
TCR Code:
Tolerance Code:
Package Type
Package Codes
SON
FN
Package Size
4mm x 4mm
Pad count
8
Mechanical Outline
MO-229D
Resistance
First 3 digits are significant. Fourth digit denotes number of trailing zeros. For values less than 100, use “R” to denote a
decimal point. Example, 51 and 10000 ohms are coded as 51R0 and 1002 respectively. Standard values follow E96.
Resistance Tolereance
Accuracy Code at 25°C
Absolute Resistance Tolerances (%)
Ratio Tolerances (R1 Ref) (%)
CA
± 0.25
± 0.05
CB
± 0.25
± 0.1
D
± 0.5
± 0.1
FA
± 1.0
± 0.05
F
± 1.0
± 1.0
G
± 2.0
N/A
J
± 5.0
N/A
Temperature Coefficient Of Resistance (TCR)
TCR Code (-55°C to 125°C)
Absolute (ppm/°C)
Tracking (R1 Ref) (ppm/°C)
Q
± 25
±5
P
± 50
±5
S
± 100
N/A
L
± 200
N/A
Bulk Packaging Options
Quantity
Model + Pad Count
SFN08
7” Reel
1000
13” Reel
3000
5
Contact customer service for custom designs and features.
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.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
01. 12
PCB Design
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