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Microchip Technology GC1510-30
- Part No.:
- GC1510-30
- Manufacturer:
- Microchip Technology
- Package:
- Stud
- Datasheet:
-
GC1510-30.pdf
- Description:
- SI TVAR HERMETIC PILL
- Quantity:
- Payment:
- Shipping:
Inventory:2,151
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Product details
Overview
GC1510-30 from Microsemi is a 30 V abrupt junction silicon tuning varactor diode in Style 30 package, with nominal capacitance of 5.6 pF at −4 V, minimum Q of 2600 at 50 MHz, and capacitance ratio CT₀/CT₋₃₀ ≥ 4.0. It delivers low series resistance and high Q for voltage-controlled oscillator (VCO) and filter tuning in RF front-ends.
For engineers reviewing the GC1510-30 datasheet, GC1510-30 pinout, GC1510-30 application, or GC1510-30 equivalent, this part is selected for VHF–Ku band tuning where low phase noise, stable thermal coefficient (300 ppm/°C), and RoHS-compliant gold-plated terminations are critical design requirements.
Technical Context
The GC1510-30 is an abrupt junction silicon varactor optimized for high-Q, low-Rs RF tuning. Its capacitance varies inversely with reverse bias voltage, exhibiting a measured CT₀/CT₋₃₀ ratio ≥ 4.0 and thermal coefficient of capacitance of +300 ppm/°C at 4 V.
Designed for operation up to +125 °C with breakdown voltage ≥ 30 V and leakage current ≤ 0.02 µA at 25 °C, it supports stable performance in narrow-to-moderate bandwidth VCOs, voltage-variable filters, and analog phase shifters across microwave frequencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance @ −4 V | 5.6 pF ±10% - defines center tuning range for VCO core design at common bias point |
| Q Factor @ 50 MHz | ≥2600 - enables low phase noise in oscillator loop by minimizing resistive loss |
| Capacitance Ratio CT₀/CT₋₃₀ | ≥4.0 - supports ≥2-octave tuning range in broadband VVF and phase shifter topologies |
| Breakdown Voltage VB | ≥30 V - allows safe operation with standard 24 V DC bias rails and margin for transient spikes |
| Leakage Current @ 25 V | ≤0.02 µA @ 25 °C - ensures minimal bias current drift and long-term tuning stability |
| TCC @ 4 V | +300 ppm/°C - quantifies temperature-induced capacitance drift for thermal compensation planning |
| Package Style | Style 30 - hermetically sealed ceramic-metal package with gold-plated terminations, 0.18 pF case capacitance included in spec |
Pinout & Package
GC1510-30 uses Microsemi Style 30 package: hermetic ceramic-metal construction, gold-plated terminations, two-terminal device with anode and cathode leads. Case capacitance is 0.18 pF and included in all published capacitance values.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward-biased terminal (not used in varactor mode) | Connected to ground or AC ground in reverse-biased tuning configuration; defines polarity for correct biasing |
| Cathode | Reverse-biased terminal | Connected to tuning voltage rail; capacitance modulation occurs across cathode–anode junction under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Highest Q in 30 V silicon varactor family | Q ≥ 2600 @ 50 MHz - directly reduces phase noise floor in VCO designs |
| Lowest series resistance Rs | Inferred from Q and Cj - enables higher efficiency in resonant tank circuits and lower insertion loss in tunable filters |
| Abrupt junction profile | Enables predictable, linearized C–V slope near zero bias - simplifies control voltage scaling in analog tuning loops |
| RoHS-compliant gold terminations | Standard finish ensures solderability, corrosion resistance, and long-term interconnect reliability in harsh environments |
| Thermal coefficient of capacitance | +300 ppm/°C @ 4 V - enables accurate thermal drift modeling for compensated VCO architectures |
Applications
| Low-Phase-Noise VCOs | Voltage-Variable Filters (VVF) |
|---|---|
Use Scenario: Tuning element in 2–18 GHz VCOs for radar transceivers and satellite uplinks. IC Role / Device Role / Timing Role: Varactor diode providing voltage-dependent capacitance to set oscillation frequency in LC tank. Use Value: Q ≥ 2600 and low Rs minimize close-in phase noise, meeting −110 dBc/Hz @ 10 kHz offset requirements. | Use Scenario: Center-frequency tuning in SAW-less IF filters for military comms radios. IC Role / Device Role / Timing Role: Capacitance-varying element in switched-capacitor or transmission-line filter topologies. Use Value: CT₀/CT₋₃₀ ≥ 4.0 enables >2-octave center-frequency adjustment without topology change. |
| RF Phase Shifters | Automotive Radar Tuning |
Use Scenario: Analog phase control in 77 GHz beamforming networks for ADAS systems. IC Role / Device Role / Timing Role: Bias-controlled reactance element in loaded-line or reflection-type phase shifter cells. Use Value: Stable TCC (+300 ppm/°C) and low leakage ensure repeatable phase step accuracy over −40 to +105 °C. | Use Scenario: Local oscillator tuning in 76–77 GHz automotive radar front-ends. IC Role / Device Role / Timing Role: Primary capacitance tuning device in wideband VCOs locked to fractional-N synthesizers. Use Value: 30 V breakdown rating supports robust operation under ESD-prone vehicle harness conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar varactor diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MACOM MA46H120 | Capacitance = 5.0 pF @ −4 V; Q = 2200 @ 50 MHz; TCC = +250 ppm/°C | Slightly narrower tuning range (CT₀/CT₋₃₀ = 3.8); lower max operating temperature (+100 °C) | Preferred where tighter TCC tolerance is required and Q margin can be relaxed |
| Infineon BBY58-02W | Capacitance = 5.5 pF @ −4 V; Q = 1800 @ 50 MHz; breakdown = 25 V | Lower voltage rating limits use in 24 V bias systems; higher Rs increases phase noise | Selected for cost-sensitive consumer-grade VCOs where 30 V margin is not needed |
Compared with MA46H120 and BBY58-02W, GC1510-30 provides superior Q and higher breakdown voltage, enabling lower phase noise and greater system-level robustness in demanding aerospace and defense RF designs.
Availability
GC1510-30 is available at Aetrix Electronics and suitable for RF front-end design, phased-array antenna calibration, and microwave test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for GC1510-30 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and timing solutions for aerospace, defense, and industrial markets.
The GC1500 series was developed specifically for high-performance microwave tuning applications, emphasizing ultra-low phase noise, high Q, and thermal stability in VCOs, VVFs, and phase shifters from VHF through Ku band.
FAQ
What is the nominal capacitance of GC1510-30 and at what bias voltage is it specified?
The nominal capacitance of GC1510-30 is 5.6 pF, specified at −4 V reverse bias. This value includes the 0.18 pF case capacitance inherent to the Style 30 package. Capacitance is measured at 1 MHz, and the ±10% tolerance applies to this condition. GC1510-30 maintains this specification across its qualified operating temperature range of −55 °C to +125 °C.
Does GC1510-30 have a specified Q factor, and how is it measured?
Yes, GC1510-30 has a minimum Q factor of 2600 at 50 MHz. Q is calculated using Q = 1/(2πf·Rs·Cj), where Rs is measured at 1 GHz via transmission loss techniques and Cj is measured at 1 MHz. This standardized method ensures reproducible comparison across the GC1500 series. GC1510-30 achieves this Q while maintaining low Rs and high breakdown integrity.
What is the capacitance ratio CT₀/CT₋₃₀ for GC1510-30, and why does it matter?
The capacitance ratio CT₀/CT₋₃₀ for GC1510-30 is ≥4.0. This ratio indicates the usable tuning range - specifically, the ratio of capacitance at 0 V to that at −30 V. A value ≥4.0 supports >2-octave frequency tuning in VCOs and VVFs without reconfiguring circuit topology. GC1510-30's abrupt junction enables consistent ratio behavior across temperature and lifetime.
Is GC1510-30 RoHS compliant, and what is its terminal finish?
Yes, GC1510-30 is RoHS compliant per EU Directive 2002/95/EC. Its standard terminal finish is gold plating, which ensures excellent solderability, corrosion resistance, and wire-bond compatibility. Alternative finishes are available upon request, but GC1510-30 ships with gold unless otherwise specified. This finish contributes to long-term reliability in high-frequency, high-reliability applications.
What is the maximum operating temperature and leakage current specification for GC1510-30?
GC1510-30 has a maximum operating temperature of +125 °C and a maximum leakage current of 0.02 µA at 25 °C and 25 V reverse bias. At +125 °C, leakage rises to 2.0 µA - still within acceptable limits for most RF tuning applications. These specs confirm GC1510-30's suitability for under-hood automotive radar and avionics environments where thermal stability is critical.
GC1510-30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- Stud
- Packaging:
- Bulk
- Product Status:
- Active
- Capacitance @ Vr, F:
- 5.6pF @ 4V, 1MHz
- Capacitance Ratio:
- 4.0
- Capacitance Ratio Condition:
- C0/C30
- Voltage - Peak Reverse (Max):
- 30 V
- Diode Type:
- Single
- Q @ Vr, F:
- 2600 @ 4V, 50MHz
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Stud Mount
- Supplier Device Package:
- -
GC1510-30 FAQ
1.How can I place an order for GC1510-30 through Aetrix?
Please submit a Request for Quotation (RFQ) for GC1510-30 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for GC1510-30 reliable?
The price and inventory of GC1510-30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GC1510-30 is usually 5 days.
3.What payment methods are accepted for GC1510-30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GC1510-30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GC1510-30?
GC1510-30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GC1510-30 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for GC1510-30?
For technical support, including GC1510-30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GC1510-30 requirements.
6.How does Aetrix verify that GC1510-30 is sourced from the original manufacturer or authorized distributors?
All GC1510-30 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that GC1510-30 meets industry standards.
7.What is the process for return or replacement of GC1510-30?
All GC1510-30 units undergo pre-shipment inspection (PSI). If there is an issue with GC1510-30, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The GC1510-30 part is unused and in its original packaging.
Return procedure for GC1510-30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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