RHC2512FT3R00 datasheet, PDF - EEWORLD Datasheet

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RHC2512FT3R00: DescriptionFixed Resistor, Thick Film, 2W, 3ohm, 200V, 1% +/-Tol, 100ppm/Cel, Surface Mount, 2512, CHIP; CategoryPassive components The resistor; File Size242KB，5 Pages; ManufacturerSEI(Stackpole Electronics Inc.); Websitehttps://www.seielect.com/; Environmental Compliance

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RHC2512FT3R00 Overview

Fixed Resistor, Thick Film, 2W, 3ohm, 200V, 1% +/-Tol, 100ppm/Cel, Surface Mount, 2512, CHIP

RHC2512FT3R00 Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	SEI(Stackpole Electronics Inc.)
package instruction	CHIP
Reach Compliance Code	compliant
ECCN code	EAR99
Factory Lead Time	15 weeks
structure	RECTANGULAR PACKAGE
JESD-609 code	e3
Installation features	SURFACE MOUNT
Number of terminals	2
Maximum operating temperature	155 °C
Minimum operating temperature	-55 °C
Package height	0.6 mm
Package length	6.3 mm
Package form	SMT
Package width	3.2 mm
method of packing	TR, Embossed Plastic, 7 Inch
Rated power dissipation(P)	2 W
Rated temperature	70 °C
resistance	3 Ω
Resistor type	FIXED RESISTOR
size code	2512
surface mount	YES
technology	METAL GLAZE/THICK FILM
Temperature Coefficient	100 ppm/°C
Terminal surface	Matte Tin (Sn) - with Nickel (Ni) barrier
Terminal shape	WRAPAROUND
Tolerance	1%
Operating Voltage	200 V

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RHC Series

High Power Thick Film Chip Resistor

Stackpole Electronics, Inc.

Resistive Product Solutions

Features:

•

Handles 2W of power

Resistances from 0.1Ω to 1MΩ

RoHS compliant and halogen free

TCR of ± 100 ppm/ºC

1% and 5% tolerances

Runs significantly cooler than standard thick film 2512 chip

Electrical Specifications

Maximum

Working

Voltage

(1)

Maximum

Overload

Voltage

Type / Code

Package

Type

Power Rating

(Watts) @ 70ºC

Resistance

Temperature

Coefficient

Ohmic Range (Ω) and Tolerance

1%, 5%

RHC2512

2512

200V

Note: (1) Lesser of √P*R or maximum working voltage

400V

±100 ppm/ºC

0.1 - 1M

Please refer to the High Power Resistor Application Note (page 5) for more information on designing and implementing

high power resistor types.

Mechanical Specifications

Type / Code

RHC2512

Body Length

0.248 ± 0.008

6.30 ± 0.20

Body Width

0.126 ± 0.008

3.20 ± 0.20

Body Height

0.024 ± 0.004

0.60 ± 0.10

Top Termination

0.028 ± 0.008

0.70 ± 0.20

Bottom Termination

0.087 ± 0.008

2.20 ± 0.20

Unit

inches

Recommended Pad Layout

Type / Code

RHC2512

Total Length

0.315

8.00

Total Width

0.138

3.50

Pad Depth

0.118

3.00

Unit

inches

Performance Characteristics

Test

Moisture Resistance

Load Life

Resistance to Soldering

Temperature Cycling

Thermal Shock

Short Time Overload

Insulation Resistance

Typical

±1% + 0.05Ω for <10Ω and ±1% for ≥10Ω

≥1MΩ

Operating Temperature Range: -55ºC to +155ºC

Rev Date: 11/28/2017

This specification may be changed at any time without prior notice

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

www.seielect.com

marketing@seielect.com

RHC Series

High Power Thick 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°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 105°C. 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°C heat rise shown here would indicate there will be additional thermal reduction techniques needed

to keep this part under 105°C 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°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, via 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 ≤ 50mΩ.

This should be taken into account when designing.

Rev Date: 11/28/2017

This specification may be changed at any time without prior notice

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

www.seielect.com

marketing@seielect.com

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