71

12

• 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.

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.

s 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.

3.5

±1.5

4.0 max.

ø0.5

±0.05

(in mm)

5.0 max.

PTFL Series

ø0.5

±0.05

t0.5

±0.05

3.0

±0.3

7.5

±0.4

3.7

±0.3

3.5

±1.5

in mm

PTFM Series

Part Number

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)

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.

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

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.

!Note

R90E6.pdf 04.3.1