Low Profile Audio Transformers

New Surface Mount (.24" Ht. x .55" x.55")

SURFACE MOUNT
PICO surface mount units utilize materials and methods to withstand extreme temperatures of vapor phase, I.R., and other reflow procedures without degradation of electrical or mechanical characteristics.

Specifications

MIL-PRF-27: All units manufactured to MIL-PRF-27. Grade 5, Class S.
FREQUENCY RESPONSE:± 2dB, 300 Hz-200 KHz at 1.0 Milliwatt.
MAXIMUM DISTORTION: 5% with rated power level at 1 KHz and 300 Hz.
DIELECTRIC STRENGTH: All units tested at 200 V RMS.
INSULATION RESISTANCE: Greater than 10,000 Megohms at 300 V DC.
WEIGHT: 3 Grams
OPERATING TEMPERATURE: -55º C to +130º C
TERMINALS: Solderability per MIL-STD-202, Method 208.
THERMAL SHOCK: 25 Cycles, Method 107, MIL-STD-202, Test Condition -55º C to +130º C.

Larger size schematic

Low Profile Audio Transformers

PICO Part Number	Primary Impedence Ohms	Secondary Impedence Ohms Split Windings		Power Watts		Primary Unbal DC Current ma	Primary DC Resistance Ohms	Secondary DC Resistance Ohms		Turns/Ratio Prim/Sec		PICO Prices 1-9**
PICO Part Number	Primary Impedence Ohms	Ser	Par	1 Khz and Higher	300Hz and Higher	Primary Unbal DC Current ma	Primary DC Resistance Ohms	Ser Conn	Par Conn	SEC Ser Conn	SEC Par Conn	PICO Prices 1-9**
78003 78005 78010 78015 78020	10ct 20ct 20ct 32ct 40ct	10ct 8ct 20ct 32ct 40ct	2.5 2 5 8 10	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	31.6 22.3 22.3 17.6 15.8	.83 1.66 1.66 2.66 3.33	1.16 .93 2.33 3.73 4.66	.29 .23 .58 .93 1.16	1:1 1.58:1 1:1 1:1 1:1	2:1 3.16:1 2:1 2:1 2:1	48.91 48.91 48.91 48.91 48.52
78025 78030 78035 78040 78045	48ct 50ct 80ct 100ct 100ct	16ct 50ct 32ct 40ct 100ct	4 12.5 8 10 25	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	14.4 14.1 11.1 10 10	4 4.16 6.66 8.33 8.33	1.86 5.8 3.73 4.66 11.6	.46 1.45 .93 1.16 2.91	1.73:1 1:1 1.58:1 1.58:1 1:1	3.46:1 2:1 3.16:1 3.16:1 2:1	44.46 44.46 48.52 48.52 44.46
78050 78055 78060 78065 78070	120ct 120ct 120ct 150ct 150ct	12.8ct 60ct 120ct 12ct 50ct	3.2 15 30 3 12.5	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	9.1 9.1 9.1 8.2 8.2	10 10 10 12.5 12.5	1.49 7 14 1.4 5.8	.37 1.75 3.5 .35 1.45	3.06:1 1.41:1 1:1 3.54:1 1.73:1	6.12:1 2.83:1 2:1 7.08:1 3.46:1	44.46 53.17 53.17 51.48 53.17

PICO Part Number	Primary Impedence Ohms	Secondary Impedence Ohms Split Windings		Power Watts		Primary Unbal DC Current ma	Primary DC Resistance Ohms	Secondary DC Resistance Ohms		Turns/Ratio Prim/Sec		PICO Prices 1-9**
PICO Part Number	Primary Impedence Ohms	Ser	Par	1 Khz and Higher	300Hz and Higher	Primary Unbal DC Current ma	Primary DC Resistance Ohms	Ser Conn	Par Conn	SEC Ser Conn	SEC Par Conn	PICO Prices 1-9**
78075 78080 78085 78090 78095	150ct 150ct 150ct 200ct 300ct	100ct 150ct 600ct 200ct 12ct	25 37.5 150 50 3	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	8.2 8.2 8.2 7 5.8	12.5 12.5 12.5 16.6 25	11.6 17.5 70 23.3 1.4	2.91 4.37 17.5 5.83 .35	1.22:1 1:1 1:2 1:1 5:1	2.45:1 2:1 1:1 2:1 10:1	53.17 53.17 53.17 53.17 53.17
78100 78105 78110 78115 78120	300ct 300ct 300ct 300ct 320ct	50ct 150ct 300ct 600ct 12.8ct	12.5 37.5 75 150 3.2	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	5.8 5.8 5.8 5.8 5.6	25 25 25 25 26.6	5.8 17.5 35 70 1.49	1.45 4.37 8.75 17.5 .37	2.45:1 1.41:1 1:1 1:1.41 5:1	4.9:1 2.83:1 2:1 1.41:1 10:1	53.17 53.17 53.17 48.33 57.01
78125 78130 78135 78140 78145	400ct 400ct 400ct 400ct 400ct	40ct 120ct 200ct 400ct 1000ct	10 30 50 100 250	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	5 5 5 5 5	33.3 33.3 33.3 33.3 33.3	4.66 14 23.3 46.6 116.6	1.16 3.5 5.83 11.66 29.16	3.16:1 1.83:1 1.41:1 1:1 1:1.58	6.32:1 3.65:1 2.83:1 2:1 1.26:1	57.01 57.01 57.01 51.84 57.01
78150 78155 78160 78165 78170	400ct 400ct 500ct 500ct 500ct	2000ct 4000ct 12.8ct 16ct 50ct	500 1000 3.2 4 12.5	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	5 5 4.5 4.5 4.5	33.3 33.3 41.6 41.6 41.6	233.3 466.6 1.49 1.86 5.83	58.3 116.6 .37 .46 1.45	1:2.24 1:3.16 6.25:1 5.6:1 3.16:1	1:1.12 1:1.58 12.5:1 11.2:1 6.32:1	57.01 57.01 51.84 51.84 51.84
78175 78180 78185 78190 78195	500ct 500ct *500ct 500ct 600ct	150ct 500ct 500ct 600ct 12.8ct	37.5 125 - 150 3.2	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	4.5 4.5 4.5 4.5 4.1	41.6 41.6 41.6 41.6 50	17.5 58.3 58.3 70 1.49	4.37 14.58 14.58 17.5 .37	1.83:1 1:1 1:1 1:1.1 6.85:1	3.65:1 2:1 - 1.83:1 13.7:1	51.84 57.01 57.01 57.01 57.01
78200 78205 78210 78215 78220	600ct 600ct 600ct 600ct *600ct	30ct 48ct 200ct 600ct 600ct	7.5 12 50 150 -	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	4.1 4.1 4.1 4.1 4.1	50 50 50 50 50	3.5 5.6 23.3 70 70	.875 1.4 5.83 17.5 17.5	4.47:1 3.54:1 1.73:1 1:1 1:1	8.94:1 7.07:1 3.46:1 2:1 -	51.84 51.84 51.84 51.84 57.01
78225 78230 78235 78240 78245	600ct 640ct 700ct 800ct 800ct	1200ct 12.8ct 100ct 12.8ct 48ct	300 3.2 25 3.2 12	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	4.1 3.9 3.8 3.5 3.5	50 53.3 58.3 66.6 66.6	140 1.49 11.6 1.49 5.6	35 .37 2.91 .37 1.4	1:1.41 7.07:1 2.65:1 7.9:1 4.08:1	1.41:1 14.4:1 5.29:1 15.8:1 8.16:1	51.84 51.84 51.84 57.01 53.17
78250 78255 78260 78265 78270	800ct 900ct 1000ct 1000ct 1000ct	800ct 600ct 12ct 50ct 1000ct	200 150 3 12.5 250	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	3.5 3.3 3.2 3.2 3.2	66.6 75 83.3 83.3 83.3	93.3 70 1.4 5.83 116.6	23.3 17.5 .35 1.45 29.15	1:1 1.22:1 9.13:1 4.47:1 1:1	2:1 2.45:1 18.3:1 8.94:1 2:1	53.17 53.17 58.52 58.52 53.17
78275 78280 78285 78290 78295	1060ct l200ct 1200ct 1200ct *1200ct	12.8ct 12.8ct 500ct 1200ct 1200ct	3.2 3.2 125 300 -	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	3.1 2.9 2.9 2.9 2.9	88.3 100 100 100 100	1.49 1.49 58.3 140 140	.37 .37 14.58 35 35	9.1:1 9.68:1 1.55:1 1:1 1:1	18.2:1 19.4:1 3.1:1 2:1 -	58.52 58.52 58.52 58.52 58.52
78300 78305 78310 78315 78320	1500ct 1500ct 1500ct 1500ct 1600ct	12ct 500ct 600ct 1500ct 12.8ct	3 125 - - 3.2	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	2.6 2.6 2.6 2.6 2.5	125 125 125 125 133.3	1.4 58.3 70 175 1.49	.35 14.58 17.5 43.75 .37	11.2:1 1.73:1 1.58:1 1:1 11.2:1	22.4:1 3.46:1 - - 22.4:1	58.52 53.17 53.17 58.52 58.52

PICO Part Number	Primary Impedence Ohms	Secondary Impedence Ohms Split Windings		Power Watts		Primary Unbal DC Current ma	Primary DC Resistance Ohms	Secondary DC Resistance Ohms		Turns/Ratio Prim/Sec		PICO Prices 1-9**
PICO Part Number	Primary Impedence Ohms	Ser	Par	1 Khz and Higher	300Hz and Higher	Primary Unbal DC Current ma	Primary DC Resistance Ohms	Ser Conn	Par Conn	SEC Ser Conn	SEC Par Conn	PICO Prices 1-9**
78325 78330 78335 78340 78345	2000ct 2000ct *2000ct 2000ct 2000ct	8ct 2000ct 2000ct 8000ct 2500ct	2 500 - 2000 625	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	2.2 2.2 2.2 2.0 1.8	166.6 166.6 166.6 166.6 166.6	.93 233.3 233.3 933.3 291.6	.23 58.33 58.33 233.3 72.4	15.8:1 1:1 1:1 1:2 1:1	31.6:1 2:1 - 1:1 2:1	58.52 58.52 58.52 57.01 57.01
78350 78355 78360 78365 78370	3000ct *3000ct 3600ct 4000ct 4000ct	3000ct 3000ct 3600ct 16ct 600ct	725 - 900 4 150	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	1.8 1.7 1.6 1.6 1.6	250 250 300 333.3 333.3	350 350 420 1.86 70	87.5 87.5 105 .46 17.5	1:1 1:1 1:1 15.8:1 2.58:1	2:1 - 2:1 31.6:1 5.16:1	57.01 57.01 57.01 57.01 57.01
78375 78380 78385 78390 78395	4000ct *4000ct 5000ct 5000ct 7500ct	1000ct 8000ct 500ct 5000ct 50ct	250 - 125 1250 12.5	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	1.6 1.4 1.4 1.2 1.2	333.3 333.3 416.6 416.6 625	116.6 933.3 58.3 583.3 5.83	29.16 233.3 14.58 145.8 1.45	2:1 1:1.41 3.16:1 1:1 12.2:1	4:1 - 6.32:1 2:1 24.5:1	57.01 62.68 57.01 57.01 62.68
78400 78405 78410 78415 78420	7500ct 7500ct 7500ct *7500ct 8000ct	100ct 600ct 2500ct 7500ct 12.8ct	25 150 625 - 3.2	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	1.2 1.2 1.2 1.1 1.1	625 625 625 625 666.6	11.66 70 291.6 875 1.49	2.91 17.5 72.9 218.75 .37	8.66:1 3.54:1 1.73:1 1:1 25:1	17.3:1 7.07:1 3.46:1 - 50:1	57.59 57.59 57.59 57.59 62.68
78425 78430 78435 78440 78445	8000ct 8000ct 9000ct 10,000ct 10,000ct	1000ct 1200ct 9000ct 12.8ct 16ct	250 - - 3.2 4	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	1.1 1.1 1.0 1.0 1.0	666.6 666.6 750 833 833	116.6 140 1.050 1.49 1.86	29.16 35 262.5 .37 .46	2.83:1 2.58:1 1:1 28:1 25:1	5.66:1 - - 56:1 50:1	62.68 62.68 62.68 62.68 57.59
78450 78455 78460 78465 78470	10,000ct 10,000ct 10,000ct 10,000ct 10,000ct	100ct 200ct 500ct 600ct 1000ct	25 50 125 150 250	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	1.0 1.0 1.0 1.0 1.0	833 833 833 833 833	11.66 23.3 58.3 70 116.6	2.91 5.83 14.58 17.5 29.16	10:1 7.07:1 4.47:1 4.08:1 3.16.1	20:1 14.14:1 8.94:1 8.16:1 6.32:1	57.59 57.59 57.59 57.59 57.59
78475 78480 78485 78490 78495	10,000ct 10,000ct 10,000ct 10,000ct 10,000ct	1200ct 1500ct 2000ct 5000ct 7500ct	300 375 500 1250 1875	.4 .4 .4 .4 .4	.050 .050 .050 .050 .050	1.0 1.0 1.0 1.0 1.0	833 833 833 833 833	140 175 233.33 583.3 875	35 43.75 58.33 145.83 218.75	2.89:1 2.58:1 2.24:1 1.41:1 1.15:1	5.77:1 5.16:1 4.47:1 2.83:1 2.3:1	57.59 58.52 58.52 58.52 58.52
78500 78505	10,000ct *10,000ct	10,000ct 10,000ct	2500 -	.4 .4	.050 .050	1.0 1.0	833 833	1166.6 1166.6	291.6 291.6	1:1 1:1	2:1 -	53.17 62.68

*Includes Electrstatic Shield

**Discount Prices:

Ordering Instructions:

Delivery--stock to one week for sample orders.

FEATURES Extreme resistance to thermal shock Ultra miniature size PICO is approved QPL Source (MIL-PRF-27) Magnetic Shield Design available Electrostatic shielding can be added Variation of standard designs available Every unit can be made with a 300 thermal cycle guarantee using PICO's special SR construction. Contact factory for details.
Schematics for Transformers with Electrostatic Shield	Schematics for Transformers with Split Secondaries

RECOMMENDED LAND PATTERN DESIGN

For immediate engineering assistance or to place an order:
Call Toll Free: 800-431-1064

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1837
Tel: 914-738-1400 or Fax: 914-738-8225

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