BGS8L4UK/SZ RF Amplifier IC Equivalent & Substitute Parts

Part Overview

The BGS8L4UK/SZ is an RF amplifier integrated circuit manufactured by NXP Semiconductors, designed for operation in the 720MHz to 960MHz frequency band. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support, design updates, and procurement continuity. The BGS8L4UK/SZ delivers 17.3dB gain with a 0.8dB noise figure in a compact 6-WLCSP package, operating from 1.5V to 3.1V supply voltage at 4.4mA current consumption.

Substiute Parts

BGS8L4UK/SZ

NXP SemiconductorsIn Stock: 910BGS8L4UK/SZ Datasheet

Current PartRFQ

BGA7L1N6E6327XTSA1

Infineon TechnologiesIn Stock: 758BGA7L1N6E6327XTSA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BGS8L4UK/SZ is determined by the following critical parameters:

• Frequency Coverage: Operating range must encompass or closely align with 720MHz to 960MHz band
• Gain Performance: Minimum gain specification should support system requirements (reference: 17.3dB)
• Noise Figure: Low-noise performance critical for receiver applications (reference: 0.8dB)
• Supply Voltage Compatibility: Operating voltage range must overlap with system supply rails (1.5V ~ 3.1V)
• Supply Current: Power consumption profile must be compatible with power budget (4.4mA)
• Package and Mounting: Surface mount configuration with compatible footprint for PCB integration
• Compliance Status: RoHS3 and REACH compliance required for modern manufacturing standards

The BGA7L1N6E6327XTSA1 from Infineon Technologies qualifies as a functional substitute based on overlapping frequency range (728MHz ~ 960MHz), compatible supply voltage (1.5V ~ 3.3V), matching supply current (4.4mA), surface mount configuration, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Selection of the BGA7L1N6E6327XTSA1 as a substitute for the BGS8L4UK/SZ is supported by the following engineering factors:

Product Status: The BGS8L4UK/SZ is classified as obsolete, whereas the BGA7L1N6E6327XTSA1 maintains active production status with ongoing manufacturer support and availability assurance.

Compliance Certifications: Both components meet ROHS3 and REACH compliance requirements, ensuring compatibility with current manufacturing and environmental regulations.

Electrical Compatibility: Supply voltage ranges overlap (1.5V ~ 3.1V for NXP; 1.5V ~ 3.3V for Infineon), and supply current specifications are identical at 4.4mA, enabling direct power supply integration without modification.

Frequency Band Coverage: The Infineon part covers 728MHz to 960MHz, providing coverage of the primary GSM and LTE bands. The 8MHz offset at the lower frequency boundary is within acceptable tolerance for cellular applications.

Noise Performance: The 0.1dB difference in noise figure (0.8dB vs. 0.9dB) is negligible for system-level receiver performance.

Critical Design Consideration: The gain differential of 4dB (17.3dB vs. 13.3dB) requires system-level evaluation. Applications dependent on the higher gain specification may require circuit redesign, including adjustment of subsequent amplification stages or input matching networks.

Package Transition: The change from 6-WLCSP to 6-XFDFN package necessitates PCB layout redesign and re-qualification of assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the BGA7L1N6E6327XTSA1 be used as a direct pin-for-pin replacement?

A: No. While both components are 6-pin surface mount RF amplifiers, the package types differ (WLCSP vs. XFDFN). Pin assignments may differ, and PCB footprints are incompatible. A complete PCB layout redesign is required.

Q: What is the significance of the 4dB gain difference between these parts?

A: The BGS8L4UK/SZ provides 17.3dB gain while the BGA7L1N6E6327XTSA1 provides 13.3dB gain. System designs relying on the higher gain specification must evaluate whether downstream amplification stages can compensate for this reduction. Noise figure and linearity of subsequent stages become more critical.

Q: Are both parts suitable for LTE band applications?

A: The BGS8L4UK/SZ covers 720MHz to 960MHz, encompassing GSM and early LTE bands. The BGA7L1N6E6327XTSA1 is specifically designated for LTE operation (728MHz to 960MHz) and includes LTE RF type classification. Both support primary LTE band requirements.

Q: What is the impact of the 0.1dB noise figure difference?

A: The difference between 0.8dB and 0.9dB noise figure is negligible for most receiver applications. System-level noise performance is typically dominated by subsequent stages and is not materially affected by this 0.1dB variation.

Q: Does the Infineon part require different supply voltage conditioning?

A: No. Both parts operate within overlapping supply voltage ranges (1.5V to 3.1V for NXP; 1.5V to 3.3V for Infineon). Existing power supply designs are compatible without modification.

Q: What packaging and moisture sensitivity considerations apply to the substitute part?

A: The BGA7L1N6E6327XTSA1 is supplied in Tape & Reel packaging with MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard surface mount assembly processes apply without special moisture control requirements.

Q: Is the frequency offset of 8MHz (728MHz vs. 720MHz minimum) acceptable?

A: For GSM and LTE applications, the 728MHz minimum frequency of the Infineon part is within standard band definitions. GSM-850 begins at 824MHz, and LTE Band 5 begins at 824MHz. The 728MHz specification provides margin for these applications. Verification against specific system frequency requirements is necessary.