HHM1525

Product Overview

For RF systems operating from 1710 MHz to 1990 MHz, HHM1525 supplies a controlled impedance and phase relationship. The unity transformation preserves the nominal 50 Ω unbalanced / 50 Ω balanced relationship while converting between single-ended and balanced circuitry. Confirmed selection limits include insertion loss of 1.0 dB, return loss of 10 dB, amplitude balance of 0 dB ±1 dB, phase balance of 180° ±10°.

The operating range is intended for DCS, PCS and cellular-band RF interfaces. Related HHM parts use different 50 Ω, 100 Ω, 150 Ω or 200 Ω balanced terminations, so the exact code matters.

Key Features

• Manufacturer: TDK
• Part Number: HHM1525
• Product Category: RF Balun / RF Transformer
• Device Type: multilayer chip RF balun transformer
• Frequency Range: 1710 MHz to 1990 MHz
• System / Port Impedance: 50 Ω unbalanced / 50 Ω balanced
• Impedance Ratio: 1:1
• Insertion Loss: 1.0 dB
• Return Loss: 10 dB
• Amplitude Balance / Unbalance: 0 dB ±1 dB
• Phase Balance / Difference: 180° ±10°
• Package / Case: 2.0 × 1.25 × 0.95 mm, 6-terminal HHM15
• Mounting Type: Surface mount
• Operating Temperature: -40°C to +85°C
• Target Application: DCS, PCS and cellular-band RF interfaces

Applications

• DCS, PCS and cellular-band RF interfaces
• Differential RFIC, mixer and amplifier interfaces
• Compact wireless, cellular, broadcast or telemetry modules

Quality & Sourcing

Antrex Electronics can support sourcing of HHM1525 for production, repair and shortage requirements. Incoming verification can include manufacturer marking, dimensional checks, frequency and impedance review, date-code inspection and third-party testing when requested. The exact balanced impedance, package size and lifecycle suffix should remain visible in any alternative-component evaluation.