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JT-115K-E

The Jensen JT-115K-E is a microphone input transformer with a 1:10 step-up ratio, designed for high impedance amplifiers. It offers wide bandwidth and high common-mode rejection.

✓ Total Stock: 9 pcs

$ Price Range: $1.00

JT-115K-E Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Braun Electronic Components ✓ Non-Authorised Inventory information	9 pcs On Request	9 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

JT-115K-E Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Jensen Global Inc.
Noise Figure	1.5 dB
SVHC Present	Not Present
Shielding	30 dB
Storage Temperature	70°C

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JT-115K-E Description

Short technical summary and product information.

The Jensen JT-115K-E is a microphone input transformer specifically designed for use with low noise FET or vacuum tube input amplifiers. It provides a 1:10 step-up ratio, ideal for achieving high impedance.

This transformer boasts a wide bandwidth, with a -3 dB response at 2.5 Hz and extending up to 90 kHz. It delivers approximately 20 dB of voltage gain with a low noise figure of only 1.5 dB. The input impedance is rated at 1.4 kΩ, resulting in a minimal loading loss of 0.9 dB. High common-mode rejection is achieved, with a typical value of 110 dB at 60 Hz.

The JT-115K-E features a fully balanced primary and includes a standard 30 dB magnetic shield package made of MuMETAL® to minimize interference from external magnetic fields. Its secondary source impedance makes it suitable for sensitive input stages.

Specifications include a typical input impedance of 1.4 kΩ at 1 kHz and a typical voltage gain of 19.75 dB at 1 kHz. Distortion is kept low, with a typical THD of 0.001% at 1 kHz. The operating temperature range is from 0°C to 70°C.

JT-115K-E Quick Information

Product Type: Microphone Input Transformer

Series: JT

Canonical Name: Jensen JT-115K-E Microphone Input Transformer

Subcategory: Microphone Input

JT-115K-E Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

JT-115K-E Estimated Pricing

Qty	Low	High
1+	$1.00	$1.00

Estimated market price range - modelled values for guidance only, not live distributor offers.

JT-115K-E Features

1:10 step-up ratio for high impedance inputs.
Wide bandwidth from 2.5 Hz to 90 kHz.
Low noise figure of 1.5 dB.
High common-mode rejection of 110 dB.
MuMETAL® magnetic shielding included.

JT-115K-E Applications

Ideal for FET input amplifiers.
Suitable for vacuum tube inputs.
Designed for low noise applications.
Provides transformer isolation.
Use in high impedance audio circuits.

JT-115K-E FAQs

7 frequently asked questions generated from this part’s specifications.

What is the turns ratio of the JT-115K-E transformer?

The JT-115K-E has a typical turns ratio of 1:10.00.

What is the input impedance of the JT-115K-E at 1 kHz?

The typical input impedance of the JT-115K-E at 1 kHz is 1.4 kΩ.

What is the voltage gain of the JT-115K-E at 1 kHz?

The typical voltage gain of the JT-115K-E at 1 kHz is 19.75 dB.

What is the frequency response of the JT-115K-E transformer?

The JT-115K-E has a wide bandwidth with a -3 dB response at 2.5 Hz and 90 kHz.

What is the typical distortion (THD) of the JT-115K-E at 1 kHz?

The typical distortion (THD) of the JT-115K-E at 1 kHz is 0.001%.

What is the common-mode rejection ratio (CMRR) of the JT-115K-E at 60 Hz?

The typical common-mode rejection ratio (CMRR) of the JT-115K-E at 60 Hz is 110 dB.

What is the operating temperature range for the JT-115K-E?

The JT-115K-E operates within a temperature range of 0°C to 70°C.