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PolySwitch®

PTC Devices

Overcurrent Protection Device

Raychem Circuit Protection Products

PRODUCT: TRF250-183S

DOCUMENT: SCD 26744

PCN: REFER TO TABLE III BELOW

REV LETTER: C

REV DATE: MAY 29, 2007

PAGE NO.: 1 OF 1

Specification Status: Released

Operating Conditions at 20°C:

Maximum Continuous Operating Voltage

Fault Ratings at 20°C:

Additional Info at 20°C:

• Resistance matched: N/A

• Lightning withstand: 1.5 kV per ITU-T K.20, K.21

• Helps equipment meet ITU-T K.20, K.21

Lead Material:

22 AWG Sn-Plated Copper (0.65 mm [0.026”] nominal diameter)

External Coating Material:

Cured, flame retardant epoxy polymer, meeting UL94 V-0 requirements

Marking:

(Center-to-Center)

D

B

E

C

A

TABLE I. DIMENSIONS:

A

B

C

D

E

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

NOM

mm:

--

7.5

--

9.5

--

4.1

4.7

--

5.0

in:*

--

(0.29)

--

(0.37)

--

(0.16)

(0.19)

--

(0.20)

*Rounded off approximation

TABLE II. PERFORMANCE RATINGS @ 20°C:

HOLD

CURRENT

(A)

TRIP

CURRENT

(A)

RESISTANCE (Ω)

TIME TO TRIP(Sec)

@ 3A

OPERATING

TEMPERATURE

(°C)

TRIPPED

POWER DISSIPATION

(W)

R MIN

R MAX

TYP

MAX

MIN

MAX

0.183

0.685

0.8

2.0

3.4

0.55

1.8

-40

85

0.9

*Post Trip Resistance measured after one hour.

TABLE III. APPLICABLE PART DESCRIPTIONS:

PART DESCRIPTION

PCN # (INTERNAL ONLY)

PACKAGING TYPE

NOTES

TRF250-183S

RF0769-000

Bulk

N/A

TRF250-183S-2

RF0841-000

Tape and Reel

Dim “D” not applicable

Agency Recognitions:

UL (File #E74889), CSA (File #78165C), TUV

Reference Documents:

Raychem PS300, ITU-T K.20, K.21

Precedence:

This specification takes precedence over documents referenced herein.

Effectivity:

Reference documents shall be the issue in effect on the date of invitation for bid.

CAUTION:

Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame.

Materials Information

ROHS Compliant

ELV Compliant

Pb-Free

© 2007 Tyco Electronics Corporation. All rights reserved.