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GALI-4+
Mini-Circuits
IC AMP CELLULAR 0HZ-4GHZ SOT89
7781 Pcs New Original In Stock
RF Amplifier IC Cellular, PCS 0Hz ~ 4GHz SOT-89
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5.0 / 5.0
- (435 Ratings)
GALI-4+
Product Overview
9832982
DiGi Electronics Part Number
GALI-4+-DGManufacturer
Mini-Circuits
GALI-4+
Description
IC AMP CELLULAR 0HZ-4GHZ SOT89Inventory
7781 Pcs New Original In Stock
RF Amplifier IC Cellular, PCS 0Hz ~ 4GHz SOT-89
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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GALI-4+ Technical Specifications
Category
RF Amplifiers
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Frequency
0Hz ~ 4GHz
P1dB
17.5dBm
Gain
13.1dB
Noise Figure
4dB
RF Type
Cellular, PCS
Voltage - Supply
4.2V ~ 5.5V
Current - Supply
65mA
Test Frequency
1GHz
Mounting Type
Surface Mount
Package / Case
TO-243AA
Supplier Device Package
SOT-89
Datasheet & Documents
Datasheets
Download GALI-4+ Product Specification (PDF)
HTML Datasheet
GALI-4+-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.33.0001
Additional Information
Other Names
3157-GALI-4+TR
3157-GALI-4+DKR
3157-GALI-4+CT
Standard Package
1,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
出貨速度快，包裝嚴密，這讓我多次購買都非常順利，完全沒有等待的煩惱。
Dec 02, 2025
Impressive packaging kept everything organized and undamaged upon arrival.
Dec 02, 2025
I was impressed by the fast shipping; my order arrived much sooner than expected, which was a pleasant surprise.
Dec 02, 2025
I’ve experienced seamless support from DiGi Electronics whenever I needed help.
Dec 02, 2025
Shipping speed is excellent; I always receive my orders ahead of time.
Dec 02, 2025
Their transparent approach to pricing makes complex choices simple.
Dec 02, 2025
I feel confident buying from DiGi Electronics due to their honest pricing and reliable support.
Dec 02, 2025
Their protective packaging provides peace of mind during shipping.
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Frequently Asked Questions (FAQ)
Can the GALI-4+ replace a Mini-Circuits ZX60-43-S+ in a 3.5GHz LTE small-cell receiver chain without requiring impedance matching redesign?
The GALI-4+ has a higher output power (P1dB of 17.5dBm vs. ~15dBm for ZX60-43-S+) and slightly lower gain (13.1dB vs. ~15dB), but both are internally matched to 50Ω across 0–4GHz. However, the ZX60-43-S+ uses a different package (SOT-89 vs. SOT-26) and has a lower noise figure (2.5dB vs. 4dB). If your design is noise-sensitive, the GALI-4+ may degrade receiver sensitivity. While DC bias differs (GALI-4+ requires 5V @ 65mA vs. ZX60’s 3.3V @ 50mA), the RF ports are drop-in compatible at 3.5GHz. Re-evaluate LNA placement—if used post-mixer, the higher NF may be acceptable; if used as first-stage LNA, consider adding a low-NF preamp or sticking with ZX60-43-S+.
What are the thermal and reliability risks when operating the GALI-4+ continuously at 5.5V and 40°C ambient in a sealed outdoor enclosure?
The GALI-4+ is rated MSL-1 (unlimited floor life) and RoHS3 compliant, but its SOT-89 package has limited thermal dissipation (~200°C/W junction-to-ambient). At 5.5V and 65mA, power dissipation is ~358mW. With a 40°C ambient and no heatsinking, junction temperature can exceed 110°C—approaching long-term reliability limits. Mini-Circuits does not publish FIT rates, but prolonged operation above 100°C accelerates electromigration and bond wire fatigue. Mitigate by adding a small thermal pad or copper pour under the tab, ensuring <20°C rise. Avoid sustained max voltage in high-ambient environments; derate to 5.0V if possible to improve MTBF.
How does the GALI-4+ perform in a multi-band cellular base station frontend where out-of-band blocker signals exceed +20dBm at 2.4GHz—can it handle this without compression or damage?
The GALI-4+ has a P1dB of 17.5dBm at 1GHz, but compression characteristics degrade at higher frequencies due to internal matching trade-offs. At 2.4GHz, expect P1dB to drop by ~1–2dB. A +20dBm blocker will likely drive the amplifier into deep saturation, causing gain collapse and potential intermodulation products that corrupt adjacent channels. While the device is robust (no ESD or overpower damage specs suggest tolerance up to +20dBm CW), sustained high-power exposure increases junction temperature and risks long-term drift. Always include a bandpass filter before the GALI-4+ in multi-band systems to reject blockers. For high-blocker environments, consider a higher IP3 amplifier like the HMC788A or add attenuation ahead of the GALI-4+.
Is the GALI-4+ suitable as a driver amplifier in a 5G NR FR1 transmitter chain operating at 3.7GHz with 64-QAM modulation, and what linearity trade-offs should I expect?
The GALI-4+ can function as a driver at 3.7GHz, but its relatively low OIP3 (~25dBm estimated from gain and P1dB) limits performance with 64-QAM, which requires EVM <3.5%. At 13.1dB gain and 17.5dBm P1dB, backing off 6–8dB for linearity leaves only ~9–11dBm output—insufficient for many PA driver stages. Additionally, the 4dB noise figure degrades SNR when placed before a high-power PA. Use the GALI-4+ only in low-power or test-equipment applications at 3.7GHz. For production 5G transmitters, prefer higher-linearity drivers like the Qorvo QPA9903 or Analog Devices HMC8410, which offer >30dBm OIP3 and better AM-PM performance for modulated signals.
Can I use the GALI-4+ in a battery-powered IoT gateway operating at 868MHz with intermittent transmit bursts, and how does its quiescent current impact overall system power budget?
Yes, the GALI-4+ is viable for 868MHz ISM-band transmit boosting in IoT gateways due to its wide 0–4GHz bandwidth and stable gain (13.1dB at 1GHz, likely ~14dB at 868MHz). However, its 65mA quiescent current at 5V (325mW) is high for battery operation—even during receive or sleep modes if not disabled. Unlike modern amplifiers with shutdown pins, the GALI-4+ lacks power-down control, so it draws full current whenever powered. In a duty-cycled system with 10% TX activity, average current could still exceed 6.5mA, significantly impacting multi-year battery life. Mitigate by using a load switch to cut VCC during idle periods, or consider lower-IQ alternatives like the Skyworks SKY65404-31 (12mA typ) if gain and output power allow. Always validate thermal performance during burst operation to avoid self-heating.
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-4+ CAD Models
Mini-Circuits GALI-4+ PCB symbols & footprints
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