View 16101-014010101_6900288.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

engineering data sheet f250 relay - nonlatch 2 pdt, 2 amp application notes: 001 007 applicable socket: hrcw so9005 sf250-4 non polarized, non latching hermetically sealed relay contact arrangement 2 pdt coil supply direct current designed to the performance standards of mil-r-6106/6 cecc16101-014 bs cecc16101-021 contact types per cecc1610-021 contacts with reduced service life for resistive loads (contact types i, ii, iii) -- code 01; contacts with reduced service life at low level resistive loads -- code 02 principle technical characteristics contacts rated at 2 amps / 28 vdc weight less than 11 grams dimensions max. of case in mm 20.6 x 10.4 x 10.5 hermetically sealed, corrosion protected metal can. contact electrical characteristics minimum operating cycles contact rating per pole and load type load current in amps @28vdc @115vac/60-400hz 100,000 cycles 100,000 cycles 100,000 cycles resistive load inductive load (l/r=5ms) lamp load 2 0.75 - 0.3 - - 100 cycles resistive overload 4 - 400,000 cycles at 25% rated load featuring leach ? power and control solutions www.esterline.com americas 6900 orangethorpe ave. p.o. box 5032 buena park, ca 90622 . . tel: (01) 714-736-7599 fax: (01) 714-670-1145 europe 2 rue goethe 57430 sarralbe france . . tel: (33) 3 87 97 31 01 fax: (33) 3 87 97 96 86 asia units 602-603 6/f lakeside 1 no.8 science park west avenue phase two, hong kong science park pak shek kok, tai po, n.t. hong kong tel: (852) 2 191 3830 fax: (852) 2 389 5803 data sheets are for initial product selection and comparison. contact esterline power systems prior to choosing a component. date of issue: 9/10 - 29 - page 1 of 4
coil characteristics (vdc) f250 cecc 16101-014 01 02 06 11 13 17 19 20 21 24 nominal operating voltage 5 6 6 12 12 26.5 26.5 28 28 48 coil resistance in w 10% at +25 c 27 37 47.5 150 190 700 935 700 935 2600 maximum operating voltage 6 7.5 7.5 15 15 32 32 32 32 55 pickup voltage at 25 c 2.7 3.2 3.5 6.4 7 13.5 14.5 13.5 14.5 28 pickup voltage at 125 c 3.8 4.5 4.5 9 9 18 19 18 19 36 maximum drop-out voltage at 20 c 1.65 2 2 4 4 8 8 8 8 16 minimum drop-out voltage at -65 c 0.29 0.35 0.35 0.7 0.7 1.5 1.5 1.5 1.5 2.8 bs cecc 16101-021 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 nominal operating voltage 6 6 6 12 12 12 24 24 24 48 48 48 5 24 20 coil resistance in ohms 10% at +25 c 40 42 60 150 210 320 675 830 1250 2500 2800 3500 40 700 700 maximum operating voltage 7.2 7.2 7.2 14.4 14.4 14.4 32 32 32 57.6 57.6 57.6 6 32 24 pickup voltage at 25 c 3.6 3.6 3.6 7.2 7.2 7.2 14.4 14.4 14.4 28.8 28.8 28.8 3 14.4 10.6 minimum drop-out voltage 0.3 0.3 0.3 0.6 0.6 0.6 1.2 1.2 1.2 2.4 2.4 2.4 0.25 1.2 1 date of issue: 01/07 - 30 - page 2 of 4
general characteristics (vdc) f250 temperature range -65c to 125c dielectric strength at sea level - all circuits to ground and circuit to circuit 1000 vrms / 50 hz - coil to ground and across open contacts 500 vrms / 50 hz dielectric strength at altitude 22,000 m 350 vrms / 50 hz initial insulation resistance at 100 vdc > 1000 m w sinusoidal vibration 20 g / 70 to 3000 hz shock 100 g / 11 ms maximum contact opening time under vibration and shock 10 s operate time at nominal voltage (including bounce) 4 ms max release time (including bounce) 4 ms max bounce time 2.5 ms max contact resistance at rated current 50 m w max mounting styles dimensions in mm tolerances unless otherwise specified 0.25mm d a t e o f i s s u e : 9 /10 - 3 1 - p a g e 3 o f 4 0 . 4 3 2 . 5 m a x 2 7 m a x 3 2 . 5 m a x 2 7 c o d e f o r c e c c : 0 1 c o d e f o r b s : 0 1 c o d e f o r c e c c : 0 3 c o d e f o r b s : 0 2 6 0 . 4 c o d e f o r c e c c : 1 4 c o d e f o r b s : 0 3 8 m a x 6 0 . 4 9 . 5 1 0 . 4 m a x 8 m a x 8 m a x 1 0 . 5 m a x ? 3 . 1 c o n t r a s t i n g b e a d ? 3 . 1 c o d e f o r c e c c : 0 5 c o d e f o r b s : 0 4 c o d e f o r c e c c : 0 4 c o d e f o r b s : 0 5 0 . 3 3 . 2 3 2 . 5 m a x 2 7 2 7 0 . 4 2 0 . 6 m a x 3 2 . 5 m a x 0 . 7 0 . 4 1 1 . 6 m a x 0 . 7 ? 3 . 1 ? 3 . 1 = = ? 6 . 3 5 4 . 4 u n c 1 0 . 4 6 = = 8 m a x 0 . 8
terminal types f250 schematic diagram numbering system cecc 16101-014 xx xx xx basic series designation__________________________| | | | 1-coil voltage________________________________________________| | | 2-mounting style__________________________________________________| | 3-terminal types______________________________________________________| bs cecc 16101-021 f250 xx xx xx xx basic series designation__________________________| | | | | 1-contact variations______________________________________| | | | 2-coil voltage________________________________________________| | | 3-mounting styles_________________________________________________| | 4-terminal types______________________________________________________| notes 1. socket: 1.1 hrcw - 1m with mounting hardware and solder connections. 1.2 sf 250-r4 with mounting hardware and crimping contacts. 1.3 so-9005 for printed circuit board. 2. isolation spacer pads for pcb mounting available on request 3. ultrasonic cleaning may adversely effective the normally closed contacts typical characteristics l coil resistance/temperature change: see application note no. 001 l l/r ratio for all coils is: = 1.5 ms l coil resistance date of issue: 9/10 - 32 - page 4 of 4
application notes n001 correction due to coil copper wire resistance change in temperature example: coil resistance at 25c: 935 ohms. what is it at 125c? correction coefficient on diagram is: 1.39 at 125c. r becomes: 935x1.39=1299 ohms correction also applies to operating voltages date of issue: 3/06 - 1 - page 1 of 1 -80 -30 20 70 120 170 1.8 1.6 1.4 1.2 1 0.8 0.6 correction coefficient temperature ( c) nominal resistance at 25c nominal resistance at 20c
application notes n007 suppressor devices for relay coils the inductive nature of relay coils allows them to create magnetic forces which are converted to mechanical movements to operate contact systems. when voltage is applied to a coil, the resulting current generates a magnetic flux, creating mechanical work. upon deenergizing the coil, the collapasing magnetic field induces a reverse voltage (also known as back emf) which tends to maintain current flow in the coil. the induced voltage level mainly depends on the duration of the deenergization. the faster the switch-off, the higher the induced voltage. all coil suppression networks are based on a reduction of speed of current decay. this reduction may also slow down the opening of contacts, adversly effecting contact life and reliability. therefore, it is very important to have a clear understanding of these phenomena when designing a coil suppression circuitry. typical coil characteristics on the graph below, the upper record shows the contacts state. (high level no contacts closed, low level nc contacts closed, intermediate state contact transfer). the lower record shows the voltage across the coil when the current is switched off by another relay contact. the surge voltage is limited to -300v by the arc generated across contact poles. discharge duration is about 200 mircoseconds after which the current change does not generate sufficient voltage. the voltage decreases to the point where the contacts start to move, at this time, the voltage increases due to the energy contained in the no contact springs. the voltage decreases again during transfer, and increases once more when the magnetic circuit is closed on permanent magnet. operating times are as follows: time to start the movement 1.5ms total motion time 2.3ms transfer time 1.4ms contact state date of issue: 6/00 - 8 - page 1 of 4
types of suppressors: passive devices. the resistor capacitor circuit it eliminates the power dissipation problem, as well as fast voltage rises. with a proper match between coil and resistor, approximate capacitance value can be calculated from: c = 0.02xt/r, where t = operating time in milliseconds r = coil resistance in kiloohms c = capacitance in microfarads the series resistor must be between 0.5 and 1 times the coil resistance. special consideration must be taken for the capacitor inrush current in the case of a low resistance coil. the record shown opposite is performed on the same relay as above. the operation time becomes: - time to start the movement 2.3ms - transfer time 1.2ms the major difficulty comes from the capacitor volume. in our example of a relay with a 290 ? coil and time delay of 8 ms, a capacitance value of c=0.5 uf is found. this non polarized capacitor, with a voltage of 63v minimum, has a volume of about 1cm 3 . for 150v, this volume becomes 1.5 cm 3 . date of issue: 6/00 - 9 - page 2 of 4
the bifilar coil the principle is to wind on the magnetic circuit of the main coil a second coil shorted on itself. by a proper adaptation of the internal resistance of this second coil it is possible to find an acceptable equilibrium between surge voltage and reduction of the opening speed. to be efficient at fast voltage changes, the coupling of two coils must be perfect. this implies embedded windings. the volume occupied by the second coil reduces the efficiency of the main coil and results in higher coil power consumption. this method cannot be applied efficiently to products not specifically designed for this purpose. the resistor (parallel with the coil) for efficient action, the resistor must be of the same order of magnitude as the coil resistance. a resistor 1.5 times the coil resistance will limit the surge to 1.5 times the supply voltage. release time and opening speed are moderately affected. the major problem is the extra power dissipated. semi-conductor devices the diode it is the most simple method to totally suppress the surge voltage. it has the major disadvantage of the higher reduction of contact opening speed. this is due to the total recycling, through the diode, of the energy contained in the coil itself. the following measurement is performed once again on the same relay. operation times are given by the upper curve: - time to start the movement 14ms - transfer time 5ms these times are multiplied by a coefficient from 4 to 8. the lower curve shows the coil current. the increase prior to no contact opening indicates that the contact spring dissipates its energy. at the opening time the current becomes constant as a result of practically zero opening speed. due to this kind of behavior, this type of suppression must be avoided for power relays. for small relays which have to switch low currents of less than 0.2 a, degradation of life is not that significant and the method may be acceptable. date of issue: 6/00 - 10 - page 3 of 4
the diode + resistor network it eliminates the inconvenience of the resistor alone, explained above, and it limits the action of a single diode. it is now preferred to used the diode + zener network. the diode + zener network like the resistor, the zener allows a faster decurrent decay. in addition it introduces a threshold level for current conduction which avoids the recycling of energy released during contact movement. the lower curve on the opposite record demonstrates those characteristics. voltage limitation occurs at 42v. the two voltages spikes generated by internal movement are at lower levels than zener conduction. as a result, no current is recycled in the coil. the opening time phases are as follows: - time to start the movement 2.6ms - total motion time 2.4ms - transfer time 1.4ms the release time is slightly increased. the contacts' opening speed remains unchanged. date of issue: 6/00 - 11 - page 4 of 4
engineering data sheet hrcw relay socket 2 amp basic socket series designation for: series f250, f257, w260, gp5, and 144 meets the requirements of: mil-s-12883 dimensions general characteristics supplied with mounting hardware. temperature range -65c to +125c weight 10 grams dielectric strength at sea level 1500 vrms / 50 hz minimum gold plated contact per mil-g-45204 dallyl phthalate, glass-fiber filled per mil-m-14 featuring leach ? power and control solutions www.leachintl.com americas 6900 orangethorpe ave. p.o. box 5032 buena park, ca 90622 usa tel: (01) 714-736-7599 fax: (01) 714-670-1145 europe 2 rue goethe 57430 sarralbe france tel: (33) 3 87 97 31 01 fax: (33) 3 87 97 96 86 asia room 501, 5/f, the centre mark 287 - 299 queen's road central hong kong tel: (852) 2 191 3830 fax: (852) 2 389 5803 data sheets are for initial product selection and comparison. contact leach international prior to choosing a component. date of issue: 9/09 - 4 - page 1 of 1
engineering data sheet so9005 relay socket 2 amp basic socket series designation for: series f250, f257, w260, wb260 meets the requirements of: mil-dtl-12883 general characteristics temperature range -65c to +125c weight 10 grams terminal designations on coupling face insulation resistance 1200 m w contact resistance 2 m w featuring leach ? power and control solutions www.esterline.com americas 6900 orangethorpe ave. p.o. box 5032 buena park, ca 90622 . . tel: (01) 714-736-7599 fax: (01) 714-670-1145 europe 2 rue goethe 57430 sarralbe france . . tel: (33) 3 87 97 31 01 fax: (33) 3 87 97 96 86 asia units 602-603 6/f lakeside 1 no.8 science park west avenue phase two, hong kong science park pak shek kok, tai po, n.t. hong kong tel: (852) 2 191 3830 fax: (852) 2 389 5803 data sheets are for initial product selection and comparison. contact esterline power systems prior to choosing a component. date of issue: 3/06 - 49 - page 1 of 1

▲Up To Search▲

Price & Availability of 16101-014010101

	To Download 16101-014010101 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .