Chip Current Sensing Precision Resistor (TCS)

Direct's TCS (thin film current sensing chip resistor) makes sense of current.

The trend towards smaller handheld and portable electronics equipment has also increased the need for ultra small current sensing resistor. Devices from the Direct Electronics' TCS series use a thin film construction that enables them to achieve precision resistance tolerances, low noise and long-term stability.

The Direct TCS Series precision resistors are nichrome thin film chip resistors with a temperature coefficient of resistance of just ±50PPM/°C and tolerances of ±0.5%.

They offer excellent stability at high frequencies and are suitable for operating high voltages with more options in the smaller form sizes of 0402, 0603, 0402, 0805, 1206, 2010, and 2512.

The full range of values is from 50mΩ to 1Ω. This low ohmic devices are particularly suited to car engine management units to act as current shunt resistors.

The TCS current sense series is fully RoHS compliant and is supplied in tape and reel packaging ready for use with automated assembly processes.
Downloads Complete Specification PDF (416KB) Surface Mount Current Sensing Precision Resistor.
Contact us with your specific needs.

Features :
  1. Thin Film Process.
  2. Resistance Values from 50mΩ to 1Ω.
  3. Very Tight Tolerance from ±1% to ±0.5%.
  4. Extremely Low TCR from ±200 PPM/°C to ±50PPM/°C.
  5. High Purity Alumina Substrate for High Power Dissipation.
  6. RoHS Requirments with Pb-free Terminations.
Applications :
  1. Voltage Regulation Module (VRM),
  2. Portable Devices (PDA, Cell phone),
  3. Disk Driver, Switching Power Supply,
  4. Over Current Protection in Audio Application,
  5. DC-DC Converter, Battery Pack, Charger, Adaptor,
  6. Automotive Engine Control, Power Management Applications,
Construction & Dimensions (Unit: mm) (TCS)
Thin Film Chip Construction
Thin Film Chip Construction
Alumina Substrate Edge Electrode Resistor Layer
Bottom Electrode Barrier Layer Overcoat
Top Electrode External Electrode Marking
Type L (Unit: mm) W (Unit: mm) T (Unit: mm) D1 (Unit: mm) D2 (Unit: mm) Weight(g)/1000pcs
TCS02 (0402) 1.00±0.05 0.50±0.05 0.32±0.10 0.25±0.10 0.20±0.10 0.56
TCS03 (0603) 1.60±0.10 0.80±0.10 0.45±0.10 0.30±0.20 0.30±0.20 3.1
TCS05 (0805) 2.00±0.15 1.25±0.15 0.55±0.10 0.30±0.20 0.40±0.25 5.6
TCS06 (1206) 3.05±0.15 1.55±0.15 0.55±0.10 0.50±0.30 0.40±0.25 12.3
TCS10 (2010) 5.00±0.20 2.45±0.15 0.60±0.15 0.60±0.30 0.50±0.25 26.7
TCS12 (2512) 6.35±0.20 3.15±0.15 0.60±0.10 0.60±0.30 0.55±0.25 49.6
Standard Electrical Specifications Thin Film (TCS)
Type Power Rating at 70°C Resistance
Tolerance
Resistance TCR Operating Temp. Range
TCS02 (0402) 1/16W ±0.5%, ±1.0% 500mΩ~1000mΩ ±100PPM/°C
±50PPM/°C
-55 ~ +155°C
TCS03 (0603) 1/10W ±0.5%, ±1.0% 200mΩ~300mΩ
301mΩ~1000mΩ
±100PPM/°C
±50PPM/°C
TCS05 (0805) 1/8W
TCS06 (1206) 1/4W ±1.0% 50mΩ~100mΩ ±200PPM/°C
±100PPM/°C
±50PPM/°C
±0.5%,±1.0% 101mΩ~300mΩ
301mΩ~1000mΩ
TCS10 (2010) 3/4W ±0.5%,±1.0% 50mΩ~100mΩ
101mΩ~300mΩ
301mΩ~1000mΩ
±200PPM/°C
±100PPM/°C
±50PPM/°C
TCS12 (2512) 1W

High Power Rating Electrical Specifications Thin Film (TCS)
Type Power Rating at 70°C Resistance
Tolerance
Resistance TCR Operating Temp. Range
TCS12 (2512) 3W ±0.5%, ±1.0% 100mΩ~1000mΩ ±100PPM/°C -55 ~ +155°C

Direct has the ability to manufacture following options based on customer's requirement.


Power Derating Curve (TCS)
Power Derating Curve (TCS) SeriesPower Derating Curve (TCS) Series

Recommend Land Pattern (TCS)
Land Pattern
Recommend Land Pattern
Type A (mm) B (mm) C (mm)
TCS02 0.50 0.50 0.60±0.2
TCS03 0.80 1.00 0.90±0.2
TCS05 1.00 1.00 1.35±0.2
TCS06 2.00 1.15 1.70±0.2
TCS10 3.60 1.40 2.50±0.2
TCS12 4.90 1.60 3.10±0.2
Environmental Characteristics (TCS)
Item Specification Test Method
TCR (TCR) As Spec MIL-STD-202F Method 304
+25/-55/+25/+125/+25°C。
Temperature Coefficient of Resistance As Spec MIL-STD-202F Method 304
+25/-55/+25/+125/+25°C
Short Time Overload ±1% JIS-C-5202-5.5
RCWV*2.5 or Max. overload voltage whichever is lower for 5 seconds
Dielectric Withstand Voltage by Type MIL-STD-202F Method 301
Apply Max Overload Voltage for l minute
Insulation Resistance >1000MΩ MIL-STD-202F Method 302
Apply 100VDC for 1 minute
Thermal Shock ±0.5% MIL-STD-202F Method 107G
-55°C~150°C, 100cycles
Load Life (Endurance) ±1% MIL-STD-202F Method 108A
70±2°C, RCWV for 1000 hrs with 1.5 hrs “ON” and 0.5 hrs “OFF”
Humidity (Damp Heat with Load) ±0.5% MIL-STD-202F Method 103B
40°C, 90~95%RH, RCWV 1.5 hours ON,
0.5 hours OFF, total 1000 hours
Low Temperature Operation ±0.5% JIS-C-5202-7.1
1hour, -65°C followed by 45minutes of RCWV
Bending Strength As Spec JIS-C-5202-6.1.4
Bending Amplitude 3mm for 10seconds
Solderability 95%min coverage MIL-STD-202F Method 208H
245°C±5°C, 3 seconds
Resistance to Soldering Heat ±0.5% MIL-STD-202F Method 210E
260±5°C, 10±1 seconds
Rated continuous Working Voltage (RCWV) = Power Rating × Resistance Value (Ω) or Max. Operating voltage whichever is lower.Storage Temperature: 15~28°C, Humidity < 80%RH

Reflow soldering (TCS)
Reflow SolderingReflow Soldering
Packaging Quantity & Reel Specifications (TCS)
Packaging Reel Specifications
Packaging Reel Specifications
Type ΦA ΦB ΦC W T Paper Tape (EA) Emboss Plastic Tape (EA)
TCS02 178.0±1.0 60.0±1.0 13.5±0.7 9.5±1.0 11.5±1.0 10,000Pcs -
TCS03 178.0±1.0 60.0±1.0 13.5±0.7 9.5±1.0 11.5±1.0 5,000Pcs -
TCS05 178.0±1.0 60.0±1.0 13.5±0.7 9.5±1.0 11.5±1.0 5,000Pcs -
TCS06 178.0±1.0 60.0±1.0 13.5±0.7 9.5±1.0 11.5±1.0 5,000Pcs -
TCS10 178.0±1.0 60.0±1.0 13.5±0.7 13.5±1.0 15.5±1.0 - 4,000Pcs
TCS12 178.0±1.0 60.0±1.0 13.5±0.7 13.5±1.0 15.5±1.0 - 4,000Pcs

Paper Tape Specifications (TCS)
纸带Type
纸带Type
Peel – off force
Peel – off force
Type A B W E F P0 P1 P2 ΦD0 T
TCS02 0.70±0.05 1.16±0.05 8.00±0.10 1.75±0.05 3.50±0.05 4.00±0.10 2.00±0.10 2.00±0.05 1.55±0.05 0.40±0.03
TCS03 1.10±0.05 1.90±0.05 8.00±0.10 1.75±0.05 3.50±0.05 4.00±0.10 4.00±0.10 2.00±0.05 1.55±0.05 0.60±0.03
TCS05 1.60±0.05 2.37±0.05 8.00±0.10 1.75±0.05 3.50±0.05 4.00±0.10 4.00±0.10 2.00±0.05 1.55±0.05 0.75±0.05
TCS06 2.00±0.05 3.55±0.05 8.00±0.10 1.75±0.05 3.50±0.05 4.00±0.10 4.00±0.10 2.00±0.05 1.55±0.05 0.75±0.05
  • Peel force of top cover tape
  • The peel speed shall be about 300mm/min5±5%
  • The peel force of top cover tape shall be between 10 to 100g

Emboss Plastic Tape Specifications (TCS)
Emboss Plastic Tape Specifications (TCS)
Emboss Plastic Tape Specifications (TCS)
Type A B W E F P0 P1 P2 ΦD0 T
TCS10 2.85±0.10 5.45±0.10 12.0±0.10 1.75±0.10 5.5±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.00±0.20
TCS12 3.40±0.10 6.65±0.10 12.0±0.10 1.75±0.10 5.5±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50+0.10 1.00±0.20
Order Codes (TCS)
TCS 02 D TR E   1R00 N
Part Type
Dimensions
(L×W) (mm)
02 0402
03 0603
05 0805
06 1206
10 2010
12 2512
Resistance
Tolerance(%)
F ±1%
D ±0.5%
Package
P Bulk
TR Taping Reel
TCR
(ppm/°C)
D ±50ppm/°C
E ±100ppm/°C
F ±200ppm/°C
Power Rating
(W)
  StandardCodes
R 3W
Resistance
(Ω)
R010 0.01Ω
R100 0.100Ω
1R00 1.000Ω
Marking
  Standard Marking
N No Marking

3 Digit Marking (0603) (TCS)
Resistance 0.1Ω 0.15Ω 0.01Ω 0.101Ω 0.035Ω
Codes 1R0 R10 R15 R01 101 035

4 Digit Marking (0805~2512) (TCS)
Resistance 0.1Ω 0.05Ω 0.015Ω 0.01Ω 0.39Ω
Codes 1R00 R100 R050 R015 R010 R390