MF-PSMF Series – PTC Resettable Fuses

Solder Reflow Recommendations

Process

Materials

Temperature

Time

Description

Interval

TP

TP

tp

t s

TTO

RAMP-UP

L

TL

t L

TS min

TS max

25

PREHEAT

Time

CRITICAL ZONE

RAMP-DOWN

t 25 °C TO PEAK

Notes:

•

MF-PSMF models are intended for reflow soldering (including but not

limited to heating plate, hot air, IR, nitrogen, and vapor phase).

•

Wave soldering is permissible only if the device is on the top of the

PCB, opposite the heat source.

•

Hand soldering is not recommended for these devices.

•

All temperatures refer to the topside of the device, measured on the

device body surface.

•

If reflow temperatures exceed the recommended profile, devices may

not meet the published specifications.

•

Compatible with Pb and Pb-free solder reflow profiles.

•

Excess solder may cause a short circuit.

•

Please refer to the Multifuse® Polymer PTC Resettable Fuse Soldering

Recommendations for more details.

Profile Feature

Pb-Free Assembly

Average Ramp-Up Rate (TS max to Tp)

3 °C / second max.

PREHEAT:

Temperature Min. (TS min)

Temperature Max. (T

S max)

Time (T

S min to TS max) (ts)

150 °C

200 °C

60~180 seconds

TIME MAINTAINED ABOVE:

Temperature (TL)

Time

(tL)

217 °C

60~150 seconds

Peak Temperature (TP)

260 °C

Time within 5 °C of Actual Peak Temperature (tp)

20~40 seconds

Ramp-Down Rate

6 °C / second max.

Time 25 °C to Peak Temperature

8 minutes max.

How to Order

MF - PSMF 010 /24 X - 2

Multifuse® Product

Designator

Series

PSMF = 0805 Surface Mount

Component

Hold Current, Ihold

010-110 (0.10 - 1.10 Amps)

Higher Voltage Option

Blank = Standard Voltage

/24 = 24 V

Multifuse® freeXpansion™ Design

Packaging

-2 = Tape and Reel

Packaged per EIA-481

Typical Part Marking

Represents total content. Layout may vary.

PART IDENTIFICATION:

MF-PSMF010X = 1

MF-PSMF010/24X = 1

MF-PSMF020X = 2

MF-PSMF035X = 3

MF-PSMF050X = 4

MF-PSMF075X = 5

MF-PSMF110X = 6

BIWEEKLY DATE CODE

WILL APPEAR ON THE

PACKAGING LABEL:

WEEK 1 AND 2 = A

WEEK 51 AND 52 = Z

4

Asia-Pacific:

Tel: +886-2 2562-4117

Email: asiacus@bourns.com

Europe:

Tel: +36 88 885 877

Email: eurocus@bourns.com

The Americas:

Tel: +1-951 781-5500

Email: americus@bourns.com

www.bourns.com

Specifications are subject to change without notice.

Users should verify actual device performance in their specific applications.

The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.