HHM1906A1

Product Overview

HHM1906A1 is intended for 4.9 GHz to 5.95 GHz signal chains where a compact transformer or matched balun replaces a larger discrete network. The 1:1.5 relationship converts the 50 Ω unbalanced / 75 Ω balanced ports and establishes the differential load expected by the connected RF stage. Confirmed selection data includes insertion-loss performance of 0.8 dB maximum, return loss of 10 dB minimum, amplitude balance of 0 dB ±2.5 dB, phase balance of 180° ±15°.

The band is aligned with 5 GHz WLAN RFICs requiring a 75 Ω balanced interface. At 5 GHz, short and symmetrical balanced traces, controlled ground geometry and the manufacturer land pattern are important to preserving phase and insertion-loss performance. The recorded lifecycle state is Obsolete, so the part is principally relevant to legacy production, repair and shortage sourcing.

Key Features

• Manufacturer: TDK
• Part Number: HHM1906A1
• Product Category: RF Balun / RF Transformer
• Device Type: multilayer or wound surface-mount RF balun transformer
• Frequency Range: 4.9 GHz to 5.95 GHz
• System / Port Impedance: 50 Ω unbalanced / 75 Ω balanced
• Impedance / Matching Relationship: 1:1.5
• Insertion Loss: 0.8 dB maximum
• Return Loss: 10 dB minimum
• Amplitude Balance / Unbalance: 0 dB ±2.5 dB
• Phase Balance / Difference: 180° ±15°
• Package / Case: 1.0 × 0.5 × 0.5 mm, 4-terminal HHM19
• Mounting Type: Surface mount
• Operating Temperature: -40°C to +85°C
• Lifecycle Status: Obsolete
• Target Application: 5 GHz WLAN RFICs requiring a 75 Ω balanced interface

Applications

• 5 GHz WLAN RFICs requiring a 75 Ω balanced interface
• CATV, broadcast, tuner and coaxial-to-differential receiver interfaces
• Compact 5 GHz WLAN access-point, client-radio and broadband wireless modules

Quality & Sourcing

Antrex Electronics can support sourcing of HHM1906A1 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.