Infineon Technologies BAR 88-02V E6127

Overview

BAR 88-02V E6127 from Infineon Technologies is a silicon PIN diode optimized for low-current antenna switching in handheld RF front-ends, featuring 0.28 pF capacitance at 1 GHz (VR = 0 V), 1.5 Ω forward resistance at 1 mA/100 MHz, and 80 V reverse voltage rating - deployed in GSM/UMTS/Wi-Fi band-switching modules.

For engineers reviewing the BAR 88-02V E6127 datasheet, BAR 88-02V E6127 pinout, BAR 88-02V E6127 application, or BAR 88-02V E6127 equivalent, key selection criteria include RF insertion loss (0.06 dB @ 1.8 GHz, IF = 10 mA), isolation (11 dB @ 1.8 GHz), thermal resistance (RthJS ≤ 105 K/W), and SC79 leadless package compatibility with high-density PCB layouts.

Technical Context

This PIN diode operates as a voltage-controlled RF switch in series configuration, leveraging its low I-region width (13 µm) and fast charge carrier lifetime (500 ns typ.) to enable rapid RF path toggling. Its low CT–VR slope and high RP (>1.5 kΩ @ 1.8 GHz) ensure minimal signal leakage and stable impedance matching across 0.9–2.45 GHz bands.

The device uses a single-diode, anode-cathode terminal structure in SC79 (SOD-523) package, rated for 100 mA DC forward current and 250 mW total power dissipation at Ts ≤ 123°C. It achieves <0.12 dB insertion loss at 1.8 GHz under 10 mA bias, meeting stringent linearity requirements for LTE/Wi-Fi TRx switching.

Key Specifications

Pinout & Package

BAR 88-02V E6127 uses a two-terminal SC79 (SOD-523) leadless surface-mount package with exposed cathode pad for thermal enhancement. No internal bonding wires; terminals are co-planar anode and cathode pads on bottom side.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PIN diode RF switching applications.

Compared with BAR 88-02V E6127, BAR 88-02LRH offers superior thermal dissipation but demands PCB redesign, while SXARD1-02 delivers lower RF loss and tighter capacitance control at higher cost - both require validation of bias network stability and harmonic suppression in final layout.

Availability

BAR 88-02V E6127 is available at Aetrix Electronics and suitable for GSM/UMTS antenna switching, Wi-Fi band selection, and GPS L1 bypass applications requiring stable component supply, consistent RF performance, and RoHS-compliant sourcing.

Supply support for BAR 88-02V E6127 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, RF, and automotive ICs, with leadership in silicon PIN diodes for wireless infrastructure and mobile devices.

BAR 88-02V belongs to Infineon's high-frequency discrete PIN diode product line, engineered specifically for low-loss, low-distortion RF switching in space-constrained handheld and IoT antenna systems.

FAQ

What is the maximum RF frequency range supported by BAR 88-02V E6127?

BAR 88-02V E6127 is characterized up to 2.45 GHz, with verified performance metrics including 9 dB isolation at 2.45 GHz and 0.25 pF capacitance at 1.8 GHz. Its low CT–VR slope and 500 ns carrier lifetime support reliable operation across all major cellular (GSM, UMTS, LTE), Wi-Fi (2.4 GHz), and GPS (1.575 GHz) bands.

Can BAR 88-02V E6127 be used in shunt configuration?

Yes - BAR 88-02V E6127 supports both series and shunt RF switching topologies. In shunt mode, the cathode connects to RF ground and anode to signal path; isolation improves due to low CT and high RP (>1.5 kΩ @ 1.8 GHz), though insertion loss increases slightly versus series use.

What is the recommended DC bias circuit for optimal RF performance?

A 100 kΩ series resistor with 100 pF RF choke capacitor is recommended to isolate DC bias from RF path. At 10 mA forward current, VF is 0.95 V max; typical operating point is 1–10 mA to balance IL (0.06–0.11 dB) and power consumption in battery-powered devices.

Does BAR 88-02V E6127 require special PCB layout considerations?

Yes - maintain symmetric 50 Ω microstrip traces, minimize stub length (<0.5 mm), and use solid ground plane beneath SC79 pad. The exposed cathode pad must be connected to thermal via array (≥4×0.3 mm vias) to achieve specified RthJS ≤ 105 K/W and prevent junction overheating during pulsed RF operation.