Philips ptfm DATASHEETS

Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.

• Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.

!Note

This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering.

• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.

R90E6.pdf 04.3.1

POSISTORr for Circuit Protection

for Overheat Sensing Lead Type

PTFM type has been developed for protecting power transistors, stereo main amplifiers, etc. from overheating, and also for sensing the temperature of other components which may be overheated. The "POSISTOR" offers an excellent temperature sensing ability, exhibiting a steep change in electrical resistivity near the temperature setting. PTFL type is suitable for use as an air temperature sensor.

■ Features

1. PTFM type is a screw-fixing type and PTFL type is a lead type, therefore mounting is easy.

2. Compact and light design as well as excellent thermal response

3. Solid-state construction withstands mechanical vibration and impact sufficiently

4. Contactless operation provides a prolonged service life, yet permits noiseless operation.

5. The operating point of "POSISTOR" is set on the steepest point along the resistance-temperature characteristic curve, thus performing the overheat protective operation securely.

6. PTFM type and PTFL type have the same temperature characteristic, providing a selection depending on the mounting method.

PTFL Series

PTFM Series

3.5±1.5

5.0 max.

7.5±0.4

3.7±0.3

3.0 max.

13.2±0.539±5

25 min.

4.0 max.

3.0±0.3

ø0.5±0.05

(in mm)

t0.5±0.05

2.5max.

ø0.5±0.05

in mm

Part Number

PTFp04BH471Q2N34B0 16 40 (BH) 60 100 330 470 PTFp04BG471Q2N34B0 16 50 (BG) 70 100 330 470 PTFp04BF471Q2N34B0 16 60 (BF) 80 100 330 470 PTFp04BE471Q2N34B0 16 70 (BE) 90 100 330 470 PTFp04BD471Q2N34B0 16 80 (BD) 100 100 330 470 PTFp04BC471Q2N34B0 16 90 (BC) 110 100 330 470 PTFp04BB471Q2N34B0 16 100 (BB) 120 100 330 470 PTFp04BH222Q2N34B0 16 40 (BH) 60 330 1.5k 2.2k PTFp04BG222Q2N34B0 16 50 (BG) 70 330 1.5k 2.2k PTFp04BF222Q2N34B0 16 60 (BF) 80 330 1.5k 2.2k PTFp04BE222Q2N34B0 16 70 (BE) 90 330 1.5k 2.2k PTFp04BD222Q2N34B0 16 80 (BD) 100 330 1.5k 2.2k PTFp04BC222Q2N34B0 16 90 (BC) 110 330 1.5k 2.2k PTFp04BB222Q2N34B0 16 100 (BB) 120 330 1.5k 2.2k

A blank is filled with type codes. (L: Lead type, M: with Lug-terminal) The order quantity should be an integral multiple of the "Minimum Quantity" shown in the "Package" page.

Max. Voltage

(V)

Curie Point

(°C)

Sensing

Temp. (TS)

(°C)

Resistance

Value (at 25°C)

(max.) (ohm)

Resistance Value

(at Sensing Temp. -10°C)

(max.) (ohm)

Resistance Value

(at Sensing Temp. TS°C)

(min.) (ohm)