Audio Transformer

PICO - T-22030 - TF5R21ZZ - Shielded 100 Ohm CT/ 100 Ohm Split, Ultra Miniature Audio Transformer.

Audio Transformers are transformers that are used over the audio frequency range. Audio Transformers are used in a variety of applications. They can provide galvanic isolation, signal gain/loss, match impedances between two interfaces, can be used as a reference and to provide feedback signal. Pico Electronics’ Audio Transformers are manufactured to MIL-PRF-27 Grade 5 Class S. These ultra-miniature transformers are made for durability while maintaining their electrical characteristics. All catalog transformers are manufactured to meet Mil-Std-202, method 107, thermal shock from -55°C to +130°C. All units can be manufactured with a 300 thermal cycle guarantee. Standard as well as custom designs are available. Pico Electronics, Inc. is an approved QPL source.

Specifications:

• MIL-PRF-27: All units manufactured to MIL-PRF-27, Grade 5, Class S.
• FREQUENCY RESPONSE:±3db, 20 Hz - 25 KHz at 1.0 Milliwatt.
• MAXIMUM DISTORTION: 5% With Rated Power Level at 1 KHz and 300 Hz. 10% Distortion at 20 Hz.
• DIELECTRIC STRENGTH: All Units Tested at 200 V RMS.
• INSULATION RESISTANCE: Greater Than 10,000 Megohms at 300 V DC.
• WEIGHT: 28 Grams.
• OPERATING TEMPERATURE: -55º C to +130º C. 
• TERMINALS: Solid .020 Diameter Conductor. Solderability per MIL-STD-202 Method 208.
• THERMAL SHOCK: 25 Cycles, Method 107, MIL-STD-202, Test Condition -55º C to +130º C.

Shielded 100 Ohm CT/ 100 Ohm Split Winding in Series, Hermetically Sealed - 7 Wire.

Secondary Impedance Ohms Split Winding in Parallel: 25.00 Ohms.

Frequency response: 3

Power Watt 1 KHzand higher: 3.000

Power Watt 300 Hz and higher: 2.000

Power Watt 20 hZ and higher: 0.006

Primary Unbalanced DC Current mA: 10.00

Primary DC Resistance  Ohm: 8.00

Secondary DC Resistance Ohm Series Conn: 10.00

Secondary DC Resistance Ohm Parallel Conn: 2.50

Turns Ratio pri/Sec Sec Seri Conn: 1.01

Turns Ratio Pri/Sec Parallel Conn: 2.01

NSN: 5950-01-240-4210

Alternates: W-26095, R-20045, Y-27310, W-26085, Y-27505, S-21440

Package: 0.75" D x 0.82" high.

Additional Data: https://www.picoelectronics.com/

 

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Triad/Magnetics - SP62 - Transformer TF5RX17ZZ- AUDIO Output Transformer.

This is a Red Spec audio transformers designed and constructed to meet the rigid requirements of MIL-T-27E. It features an epoxy molded case, gold plated leads and exceptional operation from 300 Hz to 60 kHz.

Pri. 800 Ohms CT, Sec. 3.2 ohm, 4mA

Operating Temperature: -40C° to 85C°

Humidity: Storage Humidity: 10 to 95% RH, non-condensing

Working voltage: 150VDC

1. Plug-in terminals are precision spaced to provide fixed mounting centers.

2. Red Spec transformers are hi-pot tested at 1,000 VRMS.

3. 150 VDC working voltage.

4. Red Spec transformers feature small footprint base dimensions of .310 by .410 inch.

5. Pin diameter = .020 inch.

New Old Stock in Manufacturer's box with slight tarnish

 

 

 

 

 

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JENSEN - 25CV4 Transformer, Audio.

Professional Series "Constant Voltage" Transformer specially designed for "constant voltage" distribution system.

Input (Primary): 25 Volt balanced or unbalanced line

Output (Secondary): 8 - Ohm loudspeaker load

Power to Speaker: 4, 2, 1/2, 1/4, 1/8 watts

Frequency Response: +/- 1 dB, 50 - 10,000 Hz

Useful Frequency Response: 30 - 20,000 Hz

Total Harmonic Distortion: 1/2% Max. 100 - 15,000 Hz

efficiency: 80% on 4 watt setting

Nominal Core Size: 5/8" X 5/8"

Overall Dimensions: 2 7/8"Wide, 1 9/16" Heights, 1 3/4" Depth

Mounting Holes 1 3/16" diameter on 2 3/8" centers

Coil/Coil/Core Insulation: 500 volts RMS, 60 Hz

Net Weight: 9 Oz

Vintage Genuine Jensen New Old Stock

Cross: Z3631.

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UTC - H6839 Shielded Audio Transformer

Dimensions: 0.93" diameter x 1.4"

Four Solder Terminals.

6000-ohms @ 35mA DC to 75-ohms

0.9Watt +/-2dB 300-4000Hz

New Old Stock

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TACTEC - 3464575-3 Transformer.

E-Cores are smaller and weaker than P-Cores, but at the same time, they also guzzle less power. In fact, their whole focus is power efficiency and achieving the best performance per watt.

MiniDriver 730 Ohm Pri to 170 OhmsCT. (At Primary 10mADC)

E24 Z-Core

Dimensions: 0.78" x 0.83" x 1" high,

Mounts on 1.15" center holes -

NEW 50/Box

Primary: Blk&Red

Secondary: Blue, Yel(CT), Blu/Wht

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Transformer, audio. 600 Ohm CT / 1.5KCT. Ultra-miniature. Mount: PCB. Dimensions: 0.375" (9.5mm) D x 0.375" (9.5mm) high with 7 radial leads. Note: Double marked TF5R21ZZ. Learn More

Transformer. Digital line matching. = Stanford Applied Eng #2212 0.76" x 0.53" x 0.67" high 8-pins 124-100131-0001B

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Triad/Magnetek - SP43 - TRF5RX17ZZ - Transformer, Audio.

Triad’s high reliability audio transformers provide the durability and precision required in today’s demanding designs. These transformers feature an epoxy molded case, gold plated leads and exceptional operation for a wide range of applications.

300 Ohm CT @ 7mA DC to 12 Ohm CT

Power Level: 50mW.

Frequency Response:=/- 2Db @ 300-60,000 CPS.

Humidity: Storage Humidity: 10 to 95% RH, non-condensing

Pri-Sec Hipot test (Pri-Sec): 1,000 VRMS for 1 sec.

Operating Temperature: -40 C to 85 C

Working Voltage: 150WV.

Mount: PCB.

Dimensions: 10.2mm wide x 7.8mm deep x 11.4mm high.

Package: 5 Radial Leads.

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Transformers, audio. 1.2KCT to 1.2KCT shielded. Mount: PCB. Dimensions: 0.75"OD x 0.52" high, long wire leads. Cross: TF5R21ZZ. Learn More

PICO-32145 Ultra Miniature dc to dc converter transformers input 5V Double marked PICO-32145 Military Transformers, 4cm Leads 10-pin pcb mount.1-2-3 5VDC 8-9-10 FB 4-(5+6)-7 14VDC 4.5W Learn More

PICO - C3187 Transformer, Audio.

Audio transformers are low-power signal devices optimized for transmission of wide-frequency AC signals with very low distortion. The transformer has no direct connection between the primary and secondary windings, the electrical energy transferred using electromagnetic induction. Due to this isolated property between primary and secondary, the transformer provides electrical isolations between primary and secondary, which means from the input and output or vice versa. 

Ultra-Miniature 600CT / 600CT to 20kHz 500mw.

Fequency Rating: 400.0 hertz minimum single component and 100.0 kilohertz maximum single component

Mounting Bolt Circle: 0.200" Nominal Single Mounting Facility Single Center Group

Inclosure Type: Fully inclosed

Winding Operating Current: 4.0 milliamperes dc nominal single component single primary

Six 25mm Wire Leads.

Dual 150-ohm windings (combined) on each side.

Dimensions: Length 0.360 X Diameter 0.350 (10mm X 8.6mm)

Federal P/N's: 01-268-8395, Military NSN 5950-01-268-8395.

MIL-Spec P/N: MIL-PRF-27/103-016

Some are made by TRW/UTC.

Application: Generally used in the input, output, amplifier, or oscillator stages of audio and sonar devices.

Made in USA

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NOS 5:1 AUDIO TRANSFORMERS HERM SEALED 8-Solder Terminals. (PRI IMPED 10,000/2500 SPLIT SEC IMPED 2000/500 SPLIT PRI DC. UNBALANCE MA.4 OPERATING LEVEL DBM 20 ( Explosion Proof? ) Learn More

Transformer, audio. Datatronics/David Systems 124-100680-0001. Semi-shielded transformer or pot core, 5-terminals. Dimensions: 0.685" D x 0.5" above board. Note: No other info available. Nicely made.

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Transformer, audio. Proprietary part number. Mount: PCB, 10 pin. Dimensions: 1.060" long x 1.183" wide x 0.792" above board. New. Note: Double marked 124-100164-0004 Rev C. Learn More

Transformer, audio, Primary: 280 Ohm. Secondary: 50 Ohm CT. Mount: panel/chassis. Dimensions: 1" square x 1-1/3" high. Used/Removed from equipment. Learn More

Transformer, audio. Primary: 280 Ohm. Dual secondaries: each 50 Ohm CT. Mount: panel/chassis. Dimensions: 1" square x 1-1/3" high. Used. Learn More

TRANSFORMER TECH - TF4RX13YY Transformer, Audio.

A transformer which is designed so that part or all of its range of operating frequencies is 20 kilohertz (kilocycles) and below. The maximum value may extend into the radio frequency range. It is generally used in the input, output, amplifier, or oscillator stages of audio and sonar devices.

8 Tab Solder Lug  PCB = Leads 1 2 3: 10K/12.5KCT, Leads: 4 5 6: 1.2K/1.5KCT.

IMPEDANCE RATING IN OHMS: 50.0 NOMINAL AND 200.0 NOMINAL SINGLE COMPONENT 1ST SECONDARY 125.0 NOMINAL AND 500.0 NOMINAL SINGLE COMPONENT 2ND SECONDARY 15000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY

FREQUENCY RATING: 50.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT

(NON-CORE DATA) FREQUENCY RESPONSE TOLERANCE IN DECIBELS: -2.0 TO 2.0 SINGLE COMPONENT

MAXIMUM TRANSFORMER POWER RATING: 200.0 MILLIWATTS SINGLE COMPONENT     

Package: Small Shielded Can, 6 Long Gold Leads.

Dimensions: 8.3mm D x 10.7mm high.

NSN: 5950-00-539-7051

Part Alternates: TF4RX13YY, H22, 58A5A2551, 58A5A255-1, 5950-00-539-7051, 00-539-7051, 5950005397051, 005397051

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STANCOR - TF5S21ZZ - PCT-78 - Transformers, Miniature Encapsiulated Audio. 600-Ohm to 600-Ohm.

(1-2 600-OHM, 3-4 600-OHM).

Type: SP70

Max. Power Level @ 300Hz: 50 mW

Turns Ratio: 1/0/1.0

DiElectric strength: 500 Vrms

RMS Test Voltage: 1500

Thermal Shock 5 cucles @ -55 C to 105 C

Response: +/- 2 db 300 Hz to 100 kHz

Max. Distortion: 10 to25% at Rated Power

Resistance: Pri. 70 Ohms, Sec. 95  Ohms

Meets requirements of MIL-T-27

Mount: PCB 4 pin Molded, Encapsulated, Green with Gold leads.

Dimensions: Width 0.310" X Height 0.465" X Length 0.410"

Weight: .111 Oz.

Stancor PCT-78.

 

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Transformer. Prim: 25,000 Ohm ct. Ser: 1000 Ohm ct. Par: 250 Ohm. Mount: PCB plug-in, 7 leads. More info: http://www.picoelectronics.com/plugin/pe42_43.htm Learn More

TNI - TF5RX21ZZ - RG991264 - Audio Frequency Transformer.

A transformer which is designed so that part or all of its range of operating frequencies is 20 kilohertz (kilocycles) and below. The maximum value may extend into the radio frequency range. It is generally used in the input, output, amplifier, or oscillator stages of audio and sonar devices.

8022 3BSB-502 - TF5RX21ZZ - RG991264

Nominal Operating Frequency: 400 Hz

Voltage Rating: 115 VAC

Max. Operating Temperature 105 C

6 Terminals

Dimensions: Width 1.5" X Length 1.4" Long X Height 1.0" 

Two Mounting studs with 6/32 Threads

Capable delivering 4.0 Mw to a 1000 ohm resistive load when 28 Volts RMS at 800 cycles is applied to terminals 1&2

Alternate Manufacturers: TRW TF5RX21ZZ, PICO TF5RX21ZZ, TOROTEL TF5RX21ZZ

Potential Alternates: M27/103-14, M2710314, MIL-PRF-27/103, MILPRF27103, MIL-T-27/103, MILT27103, TF5RX21ZZ, TMS214041, TMS21404-1, VM8-M, VM8M, 5950-01-064-1636, 01-064-1636, 5950010641636, 010641636

 

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Transformer, shielded. Miniature. Package: 10 pin PCB mount. Double marked 2718AM2. Learn More

Audio, Microphone transformer.

3 wire.

Dimensions: 0.50" wide x 0.35" high x 0.771" deep.

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Audio Output Transformer Military Special New small. Learn More

Brg Trans. Input: 10K Ohm. Gain: -1dB. Model: B-01. Learn More