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Audio / Telephony -
Voice and Data or Voice Only

*Click Here to see a full list of Telephony Transformers
Product Name Impedance Turns
Ratio
Frequency
Response
Max
D.C.R.
Dielectric Strength
SPT-010-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.0428 300-3500 Hz : ± 0.5 dB 0 mA 1500 Vrms (primary-secondary-core)
SPT-011-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.100 300-3500 Hz : ± 0.25 dB 0 mA 1500 Vrms (primary-secondary-core)
SPT-013-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± .25 dB 0 mA 3750 Vrms for 1 minute (minimum)
SPT-015-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± .25 dB 0 mA 3750 Vrms for 1 minute (minimum)
SPT-016 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± .25 dB 0 mA 3750 Vrms for 1 minute (minimum)
SPT-022 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± .25 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-023 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± .25 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-024 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.20 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-032 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.20 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-034 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.20 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-040 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.3 dB 0 mA 3750 Vrms for 1 minute (minimum)
SPT-041 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.3 dB 0 mA 3750 Vrms for 1 minute (minimum)
SPT-042 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.3 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-043 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.3 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-044 Primary: 600 Split
Secondary: Split
1:1 200-4000 Hz : ± 0.3 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-046 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.3 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-047 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.3 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-048 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.3 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-049 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.3 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-050 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 200-4000 Hz : ± 0.3 dB 0 mA 1500 Vrms for 1 minute (minimum)
SPT-101-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 90 mA 1500 Vrms (primary-secondary-core)
SPT-109-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-110-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.127 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-111-UL Primary: 900 Ohms
Secondary: 600 Ohms
1:0.8168 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-112-UL Primary: 900 Ohms
Secondary: 600 Ohms
1:0.942 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-113-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 50 mA 1500 Vrms (primary-secondary-core)
SPT-115-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.55 dB 60 mA 1500 Vrms (primary-secondary-core)
SPT-116-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-117-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.125 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-118-UL Primary: 900 Ohms
Secondary: 600 Ohms
1:0.8163 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-119-UL Primary: 900 Ohms
Secondary: 600 Ohms
1:0.946 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-123-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 90 mA 1500 Vrms (primary-secondary-core)
SPT-124-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-125-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 90 mA 1500 Vrms (primary-secondary-core)
SPT-126-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 80 mA 2400 VDC (primary-secondary-core)
SPT-127-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 120 mA 2400 VDC (primary-secondary-core)
SPT-128-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 0 mA 1500 Vrms (primary-secondary-core)
SPT-131-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 0 mA 1500 Vrms (primary-secondary-core)
SPT-172 Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 50 mA 1500 Vrms (primary-secondary-core)
SPT-184-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 120 mA 2200 VDC (primary-core-screen/secondary)
SPT-185-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.1036 300-3500 Hz : ± 0.5 dB 120 mA 2200 VDC (primary-core-screen/secondary)
SPT-186-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.6 dB 70 mA 2200 VDC (primary-core-screen/secondary)
SPT-187-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.08 300-3500 Hz : ± 0.5 dB 70 mA 2200 VDC (primary-core-screen/secondary)
SPT-188-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 70 mA 1500 Vrms (primary-secondary-core)
SPT-189-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 60 mA 1500 Vrms (primary-secondary-core)
SPT-190-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-191-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.127 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-192-UL Primary: 900 Ohms
Secondary: 600 Ohms
1:0.8168 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-193-UL Primary: 900 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-194-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.127 300-3500 Hz : ± 0.5 dB 90 mA 1500 Vrms (primary-secondary-core)
SPT-195-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:0.8163 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-196-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 50 mA 1500 Vrms (primary-secondary-core)
SPT-197-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.55 dB 0 mA 1500 Vrms (primary-secondary-core)
SPT-198-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 1.0 dB 120 mA 2200 VDC (primary-core-screen/secondary)
SPT-199-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.1036 300-3500 Hz : ± 1.0 dB 120 mA 2200 VDC (primary-core-screen/secondary)
SPT-1104-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.028 300-3500 Hz : ± 0.5 dB 0 mA 1500 Vrms (primary-secondary-core)
SPT-1105-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.045 300-3500 Hz : ± 1.0 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-1106-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 1.0 dB 70 mA 2200 VDC (primary-core-screen/secondary)
SPT-1107-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.08 300-3500 Hz : ± 1.0 dB 70 mA 2200 VDC (primary-core-screen/secondary)
SPT-1108-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 120 mA 3750 VDC (primary-secondary-core)
SPT-110-950 Primary: 600 Ohms
Secondary: 600 Ohms
1:1.193 300-3500 Hz : ± 0.5 dB 80 mA 1500 Vrms (primary-secondary-core)
SPT-1109-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 1.0 dB 120 mA 3750 Vrms for 1 minute (minimum)
SPT-1110-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 80 mA 3750 VDC (primary-secondary-core)
SPT-1111-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 1.0 dB 80 mA 3750 VDC (primary-secondary-core)
SPT-1112-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 80 mA 3750 Vrms for 1 minute (minimum)
SPT-1113-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 1.0 dB 80 mA 3750 Vrms for 1 minute (minimum)
SPT-1114-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 0.5 dB 120 mA 3750 Vrms for 1 minute (minimum)
SPT-1115-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1 300-3500 Hz : ± 1.0 dB 120 mA 3750 Vrms for 1 minute (minimum)
SPT-2104-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.037 300-3500 Hz : ± 0.5 dB 0 mA 1500 Vrms (primary-secondary-core)
SPT-2106-UL Primary: 600 Ohms
Secondary: 600 Ohms
1:1.052 300-3500 Hz : ± 0.25 dB 0 mA 1500 Vrms (primary-secondary-core)




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