TTC-5037 Equivalent & Substitute Parts Reference

Part Overview

The TTC-5037 is a Surface Mount audio transformer manufactured by Tamura, designed for data/voice coupling applications. It features a 1:1 turns ratio with 600 Ohms primary impedance and 530 Ohms secondary impedance, operating across the 200Hz to 4kHz frequency range. The device is classified as Obsolete, necessitating identification of equivalent substitute components for ongoing design requirements and procurement needs.

Substiute Parts

TTC-5037

TamuraIn Stock: 737TTC-5037 Datasheet

Current PartRFQ

TTC-5023

TamuraIn Stock: 10222TTC-5023 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TTC-5037 is determined by the following critical parameters:

Primary Substitution Criteria:

• Turns Ratio: 1:1 (exact match required)
• Primary Impedance: 600 Ohms (exact match required)
• Transformer Type: Data/Voice Coupling (functional category match)
• Frequency Range: 200Hz ~ 4kHz (operational bandwidth match)
• Mounting Type: Surface Mount (physical compatibility)
• Package Dimensions: 0.378" L x 0.492" W, Height 0.299" max (PCB layout compatibility)
• Termination Style: Flat Lead (soldering compatibility)

Secondary Substitution Criteria:

• Secondary Impedance tolerance within application requirements
• Frequency Response and Return Loss performance within acceptable margins
• Isolation voltage rating meeting or exceeding application requirements
• Operating temperature range encompassing -20°C to 85°C
• Regulatory compliance with UL60950 and EN60950

The TTC-5023 qualifies as a substitute based on matching primary impedance (600 Ohms), turns ratio (1:1), transformer type (Data/Voice Coupling), frequency range (200Hz ~ 4kHz), physical dimensions, mounting type, and regulatory certifications. Secondary impedance differs (600 Ohms vs. 530 Ohms), representing the primary technical distinction between these components.

Parameter Comparison

Engineering Selection Recommendations

TTC-5023 Substitution Basis:

The TTC-5023 is an Active product status component, addressing the obsolescence of the TTC-5037. Both components share identical primary impedance (600 Ohms), turns ratio (1:1), transformer type classification (Data/Voice Coupling), frequency operating range (200Hz ~ 4kHz), physical dimensions, mounting configuration, and regulatory certifications (UL60950, EN60950).

Technical Distinctions:

The TTC-5023 exhibits secondary impedance of 600 Ohms compared to the TTC-5037's 530 Ohms. This 70-Ohm difference represents the primary technical variance. The TTC-5023 demonstrates improved frequency response (±0.25dB vs. ±0.4dB) and higher isolation voltage rating (3000VRMS vs. 1875VRMS). DC resistance values increase from 90 Ohms to 115 Ohms across both windings in the substitute component. Return loss performance of the TTC-5023 is specified at 14dB minimum, compared to 18dB minimum for the TTC-5037.

Compliance and Availability:

Both components maintain identical regulatory compliance certifications. The TTC-5023 is currently in Active production status with substantial inventory availability (10,200 pieces), ensuring procurement continuity and long-term supply security.

Frequently Asked Questions (FAQ)

Q: Can the TTC-5023 directly replace the TTC-5037 in existing designs?

A: The TTC-5023 shares identical primary impedance, turns ratio, frequency range, physical dimensions, and mounting configuration. Secondary impedance differs (600 Ohms vs. 530 Ohms). Circuit-level analysis is required to determine if this secondary impedance difference affects application performance. Both components maintain identical regulatory certifications and operating temperature ranges.

Q: What is the significance of the secondary impedance difference between these transformers?

A: The TTC-5037 specifies 530 Ohms secondary impedance while the TTC-5023 specifies 600 Ohms. This 70-Ohm variance may impact impedance matching in applications requiring precise secondary-side impedance characteristics. Applications with impedance-sensitive circuits should evaluate this parameter against specific design requirements.

Q: How do the DC resistance values differ between these components?

A: The TTC-5037 specifies 90 Ohms DC resistance on both primary and secondary windings. The TTC-5023 specifies 115 Ohms on both windings. This 25-Ohm increase per winding may affect power dissipation and insertion loss characteristics in high-current applications.

Q: Are the physical dimensions and mounting characteristics identical?

A: Both the TTC-5037 and TTC-5023 share identical dimensions (0.378" L x 0.492" W, 9.60mm x 12.50mm) and maximum seated height (0.299", 7.60mm). Both utilize Surface Mount technology with Flat Lead termination style, ensuring PCB layout and soldering process compatibility.

Q: What is the product status difference and why does it matter?

A: The TTC-5037 is classified as Obsolete, indicating discontinued manufacturing and limited availability. The TTC-5023 maintains Active product status with current production and substantial inventory (10,200 pieces), ensuring long-term procurement availability and supply chain continuity.

Q: Do both transformers meet the same regulatory requirements?

A: Both the TTC-5037 and TTC-5023 carry identical regulatory approvals: UL60950 and EN60950. Moisture Sensitivity Level (MSL) rating is identical at Level 1 (Unlimited) for both components.

Q: How do the frequency response specifications compare?

A: The TTC-5037 specifies ±0.4dB frequency response, while the TTC-5023 specifies ±0.25dB. The TTC-5023 demonstrates tighter frequency response tolerance, indicating improved flatness across the 200Hz to 4kHz operating band.

Q: What is the isolation voltage difference between these transformers?

A: The TTC-5037 specifies 1875VRMS isolation at 1 second, while the TTC-5023 specifies 3000VRMS isolation at 1 minute. The TTC-5023 provides higher isolation voltage rating, offering enhanced electrical safety margin in applications requiring galvanic isolation.