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AH31-G
AH31-G
| Part Number | AH31-G |
|---|---|
| Manufacturer | WJ Communications / TriQuint / Qorvo |
| Category | RF & Wireless > RF Amplifiers > High Dynamic Range GaAs MESFET IF Gain‑Block Amplifiers |
| Description | High Dynamic Range GaAs MESFET IF Gain‑Block Amplifier, 50 MHz‑1000 MHz, +42 dBm OIP3, SOT‑89 (4‑Pin) Package, Discontinued legacy component. |
| Stock Status | In Stock (Obsolete / Discontinued Device) |
| Origin | Original Factory |
Product Overview
The AH31‑G is a high‑dynamic‑range GaAs MESFET IF gain‑block MMIC amplifier for 50‑1000 MHz, packaged in SOT‑89 (4‑pin) SMT housing. Integrated active bias ensures stable performance over temperature and supply‑voltage variation. Offering high OIP3, high gain and low noise figure, this obsolete device is widely deployed in receiver‑transmitter IF chains, CATV and wireless test‑measurement systems, with MTTF >1000‑year reliability.
Core Advantages
Excellent Linearity
+42 dBm typical OIP3 and +22 dBm P1‑dB deliver strong spurious suppression for multi‑carrier IF systems.
On‑Chip Active Bias
Built‑in bias stabilizes quiescent current across full temperature range, reducing external peripheral components.
Proven Long‑Term Reliability
MTTF >1000‑year rating; every unit is 100 % RF & DC factory‑tested.
Compact SMT Package
4‑pin SOT‑89 with thermal tab, suitable for automated SMT assembly and dense PCB layout.
Key Specifications
| Brand | WJ Communications / Qorvo |
|---|---|
| RoHS Status | RoHS Compliant / Green (Lead‑Free) |
| EDA / CAD | PCB Footprint & 3D Model Available upon Request |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | SOT‑89 (4‑Pin: 3 signal pin + thermal tab) |
| Mounting Type | Surface Mount (SMT) |
| Surface Marking / Silkscreen | AH31 / AH31G Marking |
| Frequency Range | 50 MHz to 1000 MHz |
| Gain (Typical @240MHz) | 19.0 dB |
| Output IP3 (OIP3) | +42 dBm (Typical) |
| Output P1dB | +22.0 dBm Typical |
| Noise Figure | 1.9 dB Typical (Max: 2.2 dB) |
| Supply Voltage (Vcc) | +5 V Nominal |
| Operating Supply Current | 150 mA Typical |
| Input / Output Impedance | 50 Ω System‑level matched; requires external RF chokes & DC‑block capacitors |
| Operating Temperature Range | ‑40°C to +85°C |
| MTTF | ＞1000 Years (@ +85°C mounting temperature) |
Typical Applications
- IF‑stage amplifiers for cellular / PCS receiver & transmitter hardware
- Wireless Local Loop (WLL) and fixed wireless access infrastructure
- CATV distribution amplifiers, fiber‑optic receiver IF path, head‑end equipment
- Broadband test & measurement instruments
- General‑purpose high‑dynamic‑range gain‑block within 50‑1000 MHz bandwidth
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1‑2 business days |
| Delivery Time | 3‑7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours. Note: AH31‑G is a discontinued legacy component, no new production run available.
Frequently Asked Questions
Q1: What is the main application of AH31‑G RF amplifier?
A: AH31‑G is a high‑dynamic‑range IF gain‑block amplifier for 50‑1000 MHz. Widely used in transceiver IF chain, CATV and legacy wireless infrastructure systems.
Q2: Does AH31‑G need external matching parts?
A: Yes. External DC‑block capacitors and RF choke inductors are required. Additional matching networks can optimize performance for target sub‑bands.
Q3: What is the benefit of built‑in active bias?
A: The on‑chip active bias stabilizes operating current over temperature and supply‑voltage variation, maintaining consistent RF performance with fewer external components.
Q4: Is AH31‑G still in mass production?
A: No, AH31‑G is officially discontinued by Qorvo / TriQuint. Only existing stock is available, no new production batches.
Q5: Can I get datasheet, S‑parameter or bulk price for AH31‑G?
A: Yes. Please submit the inquiry form for datasheet, S‑parameter files, stock status and volume discount quotation.
Q6: What does suffix “-G” mean in AH31‑G?
A: “-G” stands for lead‑free RoHS‑green version. Its electrical performance is fully identical to standard AH31.
Q7: What is the difference between AH31 and AH31‑G?
A: Electrical parameters, gain, linearity and frequency range are exactly the same. AH31 uses tin‑lead finish; AH31‑G is lead‑free RoHS‑compliant.
Q8: What is pin‑out for SOT‑89‑4 package AH31‑G?
A: Pin1: RF Input; Pin2: GND (thermal tab); Pin3: RF Output; Pin4: Vcc. Thermal tab must connect to ground plane for heat dissipation.
Q9: Are there pin‑to‑pin drop‑in replacements for AH31‑G?
A: There is no full pin‑compatible drop‑in alternative. When selecting substitutes, match frequency, OIP3, P1dB, supply voltage and package; circuit re‑tuning is necessary.
Q10: Any handling note for AH31‑G?
A: This GaAs MMIC device is ESD‑sensitive. Wear anti‑static wrist strap during assembly to avoid permanent device damage.
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