RNCP0805FTD1K30 - Stackpole Electronics, Inc.

Rev Date: 06/18/2012 1 www.seielect.com

This specification may be changed at any time without prior notice marketing@seielect.com

Please confirm technical specifications before you order and/or use.

RNCP Series

High Power Anti-Sulfur Thin Film Chip Resistor

Stackpole Electronics, Inc.

Resistive Product Solutions

Features:

• Higher power ratings than standard thick film chips

• Absolute TCRs to ±100ppm/°C

• Impervious to Sulfur contamination, no silver present in

terminations

• Absolute Tolerances to 1%

• Completely lead free and RoHS compliant without

exemptions – does not use lead containing glass

• Comparable in cost to standard thick film chip resistors

RNCP0402 0402 0.1W 50V 100V ±100 ppm/ºC 1 - 10K

RNCP0603 0603 0.125W 150V 300V ±100 ppm/ºC 1 - 47K

RNCP0805 0805 0.25W 200V 400V ±100 ppm/ºC 1 - 100K

RNCP1206 1206 0.5W 200V 400V ±100 ppm/ºC 1 - 100K

(1) Lesser of √PR or maximum working voltage

(2) Power rating for each package size is valid if ambient temp ≤80°C and terminal temp ≤105°C

Resistance

Temperature

Coefficient

Power Rating(2)

(Watts) @ 70ºC

Type / Code Package

Type

Maximum Working

Voltage(1)

Maximum Overload

Voltage

Ohmic Range (Ω) and

Tolerance

1%, 5%

Electrical Specifications

Please refer to the High Power Resistor Application Note (page 3) for more information on designing and

implementing high power resistor types.

0.039 ± 0.004 0.020 ± 0.002 0.012 ± 0.002 0.010 ± 0.006 0.012 ± 0.006 inches

1.00 ± 0.10 0.50 ± 0.05 0.30 ± 0.05 0.25 ± 0.15 0.30 ± 0.15 mm

0.059 ± 0.008 0.031 ± 0.004 0.016 ± 0.004 0.012 ± 0.006 0.016 ± 0.008 inches

1.50 ± 0.20 0.80 ± 0.10 0.40 ± 0.10 0.30 ± 0.15 0.40 ± 0.20 mm

0.079 ± 0.006 0.049 ± 0.006 0.020 ± 0.004 0.016 ± 0.008 0.024 ± 0.008 inches

2.00 ± 0.15 1.25 ± 0.15 0.50 ± 0.10 0.40 ± 0.20 0.60 ± 0.20 mm

0.122 ± 0.008 0.059 ± 0.008 0.020 ± 0.004 0.020 ± 0.008 0.028 ± 0.008 inches

3.10 ± 0.20 1.50 ± 0.20 0.50 ± 0.10 0.50 ± 0.20 0.70 ± 0.20 mm

Body Length Body Width Body Height Top Termination Bottom Termination

RNCP0805

RNCP1206

Type / Code Unit

RNCP0402

RNCP0603

LWH

Mechanical Specifications

Rev Date: 06/18/2012 2 www.seielect.com

This specification may be changed at any time without prior notice marketing@seielect.com

Please confirm technical specifications before you order and/or use.

RNCP Series

High Power Anti-Sulfur Thin Film Chip Resistor

Stackpole Electronics, Inc.

Resistive Product Solutions

123456789101112131415

RNCP0603FTD4K75

Size

High Power 0402 Tol Value Code Quantity Code ppm

Anti-Corrosive 0603 1% E94, E24 10,000 D 100

0805 5% E24 5,000

1206

Product Series Power TCR Resistance ValuePackagingTolerance

RNCP

Code

0.1W Description Size

7" Reel - Paper Tape

0.125W

0603, 0805, 12060.25W J

0.5W

0402 Four characters

with the multiplier

used as the

decimal holder.

1 ohm = 1R00

47 Kohm = 47K0

100 Kohm = 100K

Nominal

TCR Resistance

T1 4.75K

pe Description Code Watta

e Size Code Tol

alue SEI T

pes Pk

Description Code

0402 0.1W 0402 T1 = 100ppm 1% E94, E24 0402 10,000

0603 0.125W 0603 5% E24 0603, 0805, 1206 5,000

0805 0.25W 0805

1206 0.5W 1206

Code

Tolerance

RNCP High Power

Anti-Corrosive 7" reel - paper tape R

Packaging

RNCP 0603 R

SEI Type

Ambient Temperature (ºC)

120 140 160 180

155ºC

-60 -40 -20 0 20 40 60 80 100

Power Load (%)

100

-55ºC 70ºC

1% 5%

Short Time Overload RCWV*2.5 or Max Overload Voltage, 5 seconds ± 1% ± 2%

MIL-STD-202F Method 107G

-55°C to +125°C, 1000 Cycles

MIL-STD-202F Method 108A

RCWV, 125°C, 1.5 Hrs ON, 0.5 Hrs OFF, Total 1000 Hrs

MIL-STD-202F Method 103B

85°C, 85% RH, RCWV 1.5Hrs ON, 0.5Hrs OFF, Total 1000Hrs

MIL-STD-202F Method 210E

260 ± 5°C, 10 ± 1 second

Load Life ± 2%

Humidity (steady state)

Typical

Test Test Conditions

Thermal Shock ± 1% ± 1%

perating Temperature Range: -55ºC to +155ºC

± 3%

± 3% ± 3%

Resistance to Soldering Heat ± 1% ± 1%

torage Temperature : 25 ± 3°C; Humidity < 80% RH

Performance Characteristics

Power Derating Curve:

How to Order

Legacy Part Number (before January 3, 2011):

Rev Date: 06/18/2012 3 www.seielect.com

This specification may be changed at any time without prior notice marketing@seielect.com

Please confirm technical specifications before you order and/or use.

RNCP Series

High Power Anti-Sulfur Thin Film Chip Resistor

Stackpole Electronics, Inc.

Resistive Product Solutions

High Power Chip Resistors and Thermal Management

Stackpole has developed several surface mount resistor series in addition to our current sense resistors,

which have had higher power ratings than standard resistor chips. This has caused some uncertainty and

even confusion by users as to how to reliably use these resistors at the higher power ratings in their designs.

The data sheets for the RHC, RMCP, RNCP, CSR, CSRN, CSRF, CSS, and CSSH state that the rated

power assumes an ambient temperature of no more than 100 degrees C for the CSS / CSSH series and 70

degrees C for all other high power resistor series. In addition, IPC and UL best practices dictate that the

combined temperature on any resistor due to power dissipated and ambient air shall be no more than 105C.

At first glance this wouldn’t seem too difficult, however the graph below shows typical heat rise for the CSR

½ 100 milliohm at full rated power. The heat rise for the RMCP and RNCP would be similar. The RHC with

its unique materials, design, and processes would have less heat rise and therefore would be easier to

implement for any given customer.

The 102 degrees C heat rise shown here would indicate there will be additional thermal reduction techniques

needed to keep this part under 105C total hot spot temperature if this part is to be used at 0.75 watts of

power. However, this same part at the usual power rating for this size would have a heat rise of around 72

degrees C. This additional heat rise may be dealt with using wider conductor traces, larger solder pads and

land patterns under the solder mask, heavier copper in the conductors, vias through PCB, air movement, and

heat sinks, among many other techniques. Because of the variety of methods customers can use to lower

the effective heat rise of the circuit, resistor manufacturers simply specify power ratings with the limitations

on ambient air temperature and total hot spot temperatures and leave the details of how to best accomplish

this to the design engineers. Design guidelines for products in various market segments can vary widely so it

would be unnecessarily constraining for a resistor manufacturer to recommend the use of any of these

methods over another.

Note: The final resistance value can be affected by the board layout and assembly process, especially the size of the

mounting pads and the amount of solder used. This is especially notable for resistance values ≤ 50 mΩ.

This should be taken into account when designing.