HHM1522A7

Product Overview

Designed around 824 MHz to 894 MHz, HHM1522A7 provides the stated balanced RF interface in a compact production package. The unity-ratio network preserves the nominal 50 Ω unbalanced / 50 Ω balanced relationship while converting between single-ended and balanced circuitry. Confirmed selection data includes insertion-loss performance of 1.4 dB maximum, return loss of 10 dB minimum, amplitude balance of 0 dB ±1 dB, phase balance of 180° ±10°.

The operating span supports Cellular Bands 5/6/18/19/20/26/27/82 balanced interfaces. The transformer ratio, center-tap arrangement and port impedance should be evaluated together rather than selecting a replacement from frequency overlap alone. The recorded lifecycle state is NRND; the exact ordering code should remain in the approved BOM until an engineering-qualified alternative is available.

Key Features

• Manufacturer: TDK
• Part Number: HHM1522A7
• Product Category: RF Balun / RF Transformer
• Device Type: multilayer or wound surface-mount RF balun transformer
• Frequency Range: 824 MHz to 894 MHz
• System / Port Impedance: 50 Ω unbalanced / 50 Ω balanced
• Impedance / Matching Relationship: 1:1
• Insertion Loss: 1.4 dB maximum
• Return Loss: 10 dB minimum
• 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
• Lifecycle Status: NRND
• Target Application: Cellular Bands 5/6/18/19/20/26/27/82 balanced interfaces

Applications

• Cellular Bands 5/6/18/19/20/26/27/82 balanced interfaces
• Single-ended-to-balanced receiver, transmitter, mixer and amplifier interfaces
• Cellular, telemetry, instrumentation and broadband communication equipment

Quality & Sourcing

Antrex Electronics can support sourcing of HHM1522A7 for production, repair and shortage requirements. Incoming verification can compare the exact manufacturer marking, ordering suffix, package dimensions, frequency range, single-ended and balanced impedances, insertion-loss limits and lifecycle status. For obsolete or NRND devices, Antrex Electronics can also coordinate BOM sourcing and third-party inspection before shipment, while alternative parts should remain subject to engineering approval for PCB footprint, impedance and RF performance.