TY-301P Audio Transformer Equivalent & Substitute Parts

Part Overview

The TY-301P is an active audio transformer manufactured by Triad Magnetics, designed for data and voice coupling applications. This through-hole mounted component features a 600 ohm primary impedance and 900 ohm secondary impedance with a 1:1.27 turns ratio, operating across the 300Hz to 3.5kHz frequency range. The transformer is ROHS3 compliant and maintains active product status with 1162 units in current inventory. Substitute parts are identified when identical electrical specifications, mechanical dimensions, and compliance certifications are maintained across alternative part numbers within the same manufacturer series.

Substiute Parts

TY-301P

Triad MagneticsIn Stock: 1175TY-301P Datasheet

Current PartRFQ

TY-301P-B

Triad MagneticsIn Stock: 1172TY-301P-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TY-301P is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part TY-301P-B maintains identical specifications in the following categories:

Electrical Parameters: Turns ratio (1:1.27), primary impedance (600 ohms), secondary impedance (900 ohms), DC resistance values (36 ohm primary, 76 ohm secondary), frequency range (300Hz ~ 3.5kHz), frequency response (±0.5dB), isolation voltage (1500VAC), insertion loss (1dB typical), return loss (26dB typical), and power level range (-45dB ~ 7dB).

Mechanical Parameters: Through-hole mounting type, physical dimensions (0.812" L x 0.700" W / 20.62mm x 17.78mm), seated height (0.740" / 18.80mm maximum), and PC pin termination style.

Compliance & Status: Both parts maintain ROHS3 compliance, active product status, and identical operating temperature range (-20°C ~ 85°C).

Parameter Comparison

Engineering Selection Recommendations

The TY-301P-B serves as a direct equivalent substitute for the TY-301P based on complete parameter alignment across electrical specifications, mechanical dimensions, and compliance certifications. Both components are manufactured by Triad Magnetics within the TY series and maintain active product status. Selection between TY-301P and TY-301P-B is determined by inventory availability and supply chain requirements, as no technical differentiation exists between the two part numbers. Current inventory levels are 1162 units for TY-301P and 1147 units for TY-301P-B. Both parts satisfy ROHS3 compliance requirements and are suitable for data and voice coupling applications within the specified frequency range and operating temperature limits.

Frequently Asked Questions (FAQ)

Q: What determines if TY-301P-B is a valid substitute for TY-301P?

A: Substitution is valid when all electrical parameters (impedance, turns ratio, frequency response, isolation voltage, insertion loss, return loss, power level), mechanical dimensions (size, height, mounting type, termination style), and compliance certifications (ROHS3) are identical. TY-301P-B meets all these criteria.

Q: Are there any differences in performance between TY-301P and TY-301P-B?

A: No. Both parts maintain identical electrical performance specifications including frequency range (300Hz ~ 3.5kHz), frequency response (±0.5dB), insertion loss (1dB typical), and return loss (26dB typical).

Q: Can TY-301P-B be used in existing PCB designs for TY-301P?

A: Yes. The parts are mechanically and electrically identical. Physical dimensions (0.812" L x 0.700" W, 0.740" seated height), through-hole mounting configuration, and PC pin termination are equivalent, allowing direct substitution in existing circuit board layouts.

Q: What is the operating temperature range for both parts?

A: Both TY-301P and TY-301P-B operate across -20°C to 85°C.

Q: Are both parts RoHS compliant?

A: Yes. Both TY-301P and TY-301P-B are ROHS3 compliant.

Q: What is the isolation voltage rating?

A: Both parts provide 1500VAC isolation voltage.

Q: Which part should be selected based on availability?

A: Selection should be based on current inventory levels and supply chain requirements. TY-301P has 1162 units in stock, while TY-301P-B has 1147 units in stock. Both are active products with equivalent specifications.