06/08/15

Specifications are subject to change without notice.

The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.

Users should verify actual device performance in their specific applications.

Caution when using Breaker (Continued)

HANDLING CAUTIONS

1.

Since the breaker body is composed of plastic parts, do not clamp or dent with tools as this could cause a resistance increase or body

damage.

2.

Breaker terminals are thin copper-alloy with right angle edges. Handle carefully to avoid injury to fingers. Handling while wearing finger

cots and tweezers is recommended.

3.

When welding breaker terminals or mounting the breaker on a cell or PCM board, be careful to avoid placing excessive stress on the

breaker body and terminals. Excessive stress may cause a resistance increase or body damage. Please refer to the following cautions:

a) Do not apply more than 10 N moment to the breaker body (refer to Figure 1)

b) Do not apply more than 1.5 cN-m twist torque to the breaker body (refer to Figure 2)

c) Do not apply more than 20 N bending force to the breaker body (refer to Figure 3)

d) Do not apply more than 0.6 cN-m twist torque to the breaker terminals (refer to Figure 4)

e) Do not apply more than 2 N force to the breaker terminals (refer to Figure 5)

f)

Do not bend terminals more than 45 ° at root (refer to Figure 6)

g) Do not twist terminals more than 20 ° with the breaker body affixed.

4.

In breaker body welding, normally there is direct welding (Figure 7) and series welding (Figure 8). In either case, use a suitable jig so that

there will be no stress as stated above.

5.

Pull-and-detach strength of the terminal welding should be to your own specification. If the welding result is controlled by resistance,

measurement should be made at close point to the breaker body by “4-point clip method” using a milliohm meter to ensure accuracy

(refer to Figure 9).

6.

Avoid putting stress as shown above in 3-a) to 3-g) when the jig is used for welding/additional processing.

Rod A

Rod B

Rod A

Figure 1

Figure 2

Figure 9

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Rod B

45 °

45 °

45 °

45 °

milliohm meter

Due to possible updates to safety standards and other reasons, there may be changes in

specifications for this data sheet without prior notification. Therefore, before design-in for

your application, please contact us for the most up-to-date specifications.

MF-NSMF Series - PTC Resettable Fuses