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GALI-33+
Mini-Circuits
IC AMP CELLULAR 0HZ-4GHZ SOT89
2067 Pcs New Original In Stock
RF Amplifier IC Cellular, PCS 0Hz ~ 4GHz SOT-89
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5.0 / 5.0
- (218 Ratings)
GALI-33+
Product Overview
9833416
DiGi Electronics Part Number
GALI-33+-DGManufacturer
Mini-Circuits
GALI-33+
Description
IC AMP CELLULAR 0HZ-4GHZ SOT89Inventory
2067 Pcs New Original In Stock
RF Amplifier IC Cellular, PCS 0Hz ~ 4GHz SOT-89
Quantity
Minimum 1
Minimum 1
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GALI-33+ Technical Specifications
Category
RF Amplifiers
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Frequency
0Hz ~ 4GHz
P1dB
13.4dBm
Gain
15.8dB
Noise Figure
3.9dB
RF Type
Cellular, PCS
Voltage - Supply
3.8V ~ 4.8V
Current - Supply
40mA
Test Frequency
2GHz
Mounting Type
Surface Mount
Package / Case
TO-243AA
Supplier Device Package
SOT-89
Datasheet & Documents
HTML Datasheet
GALI-33+-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8542.33.0001
Additional Information
Other Names
3157-GALI-33+CT
3157-GALI-33+TR
3157-GALI-33+DKR
Standard Package
1,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
포장 재질이 고급스러우면서도 강도가 좋아 제품이 안전하게 도착했고, 배송 추적 시스템도 매우 정확했습니다.
Dec 02, 2025
Delivery was swift, and I liked that the packaging used environmentally safe materials.
Dec 02, 2025
Impressive stock management means I always receive my orders without delay.
Dec 02, 2025
The excellence of their products has kept me a loyal customer.
Dec 02, 2025
I love how easy it is to find what I need on DiGi Electronics' website, combined with their excellent value.
Dec 02, 2025
The website provides a seamless browsing experience, easy to navigate and visually appealing.
Dec 02, 2025
Their eco-friendly packaging reassures me that I'm making an eco-conscious choice.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the GALI-33+ in a battery-powered cellular IoT device, and how can I mitigate supply voltage instability?
The GALI-33+ requires a tightly regulated supply voltage of 3.8V to 4.8V, but battery voltage can sag under load or drop during discharge, risking gain compression or oscillation. To mitigate this, use a low-dropout regulator (LDO) with <50mV dropout and ensure input bypassing with a 100nF ceramic capacitor placed within 2mm of the pin. Avoid long PCB traces to the Vcc pin, as parasitic inductance can cause instability—this is especially critical given the GALI-33+'s wide 0Hz–4GHz bandwidth and lack of internal bias stabilization circuitry.
Can I replace the Mini-Circuits GALI-33+ with a Skyworks SKY65012-70LF in a 2.4GHz Wi-Fi front-end without redesigning the matching network?
Direct replacement of the GALI-33+ with the SKY65012-70LF is not recommended without impedance re-matching. While both are SOT-89 packaged RF amplifiers covering 2.4GHz, the GALI-33+ has a higher P1dB (13.4dBm vs. 11.5dBm) and different input/output impedance characteristics. The SKY65012-70LF requires external input matching for optimal noise figure, whereas the GALI-33+ is internally matched for 50Ω. Substituting without tuning may result in gain ripple, poor return loss, or reduced efficiency—perform S-parameter simulation or bench tuning if replacement is necessary.
How does the GALI-33+ perform under high ambient temperatures in an enclosed outdoor cellular base station module, and what derating should I apply?
Although the GALI-33+ has no explicit thermal shutdown and operates from -40°C to +85°C, its gain and linearity degrade with temperature rise. In enclosed outdoor applications, junction temperature can exceed 100°C due to poor airflow and solar loading. Derate the output power by 0.3dB per 10°C above 25°C ambient and ensure the PCB copper pour under the SOT-89 package acts as a heat spreader. Monitor supply current—it increases with temperature, potentially pushing the 40mA typical draw beyond safe limits if thermal management is inadequate.
Is the GALI-33+ suitable for broadband signal boosting in a multi-standard small cell supporting LTE, NB-IoT, and 5G NR sub-6GHz bands simultaneously?
The GALI-33+ can cover these bands due to its 0Hz–4GHz bandwidth, but its relatively high noise figure (3.9dB) and moderate P1dB (13.4dBm) make it marginal for high-sensitivity or high-power scenarios in multi-standard small cells. It lacks built-in linearity optimization for wideband OFDM signals, which may lead to EVM degradation in 5G NR. For concurrent multi-band operation, consider a higher-performance amplifier like the Qorvo QPA9903, which offers better ACPR and lower noise. Reserve the GALI-33+ for low-channel-count or cost-sensitive designs where moderate performance is acceptable.
What layout and grounding practices are critical to prevent oscillation in the GALI-33+ when used in a densely populated RF PCB with mixed digital and analog sections?
Oscillation in the GALI-33+ often stems from poor grounding or coupling to digital noise sources. Use a solid ground plane beneath the device and connect the SOT-89 tab directly to ground with multiple vias (≥4) to minimize inductance. Keep input and output traces short and orthogonal to digital lines to reduce crosstalk. Place a 10pF capacitor from the supply pin to ground (in addition to the 100nF bypass) to suppress high-frequency resonance. Avoid routing high-speed digital signals underneath the GALI-33+—its wide bandwidth makes it susceptible to injection locking or parasitic feedback from nearby clocks or data lines.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
GALI-33+ CAD Models
Mini-Circuits GALI-33+ PCB symbols & footprints
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