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Home > Products > Discrete Semiconductor Products > Diodes > RF Diodes

Microchip Technology GC9704-UC

Name: GC9704-UC
Brand: Microchip Technology
SKU: GC9704-UC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: GC9704-UC

Manufacturer:: Microchip Technology

Category:: RF Diodes

Package:: Die

Datasheet:: GC9704-UC.pdf

Description:: DIODE SCHOTTKY 5V 10MA CHIP

Quantity:: RFQ Add To RFQ list

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Inventory:4,171

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Product details

Overview

GC9704-UC from Microsemi is a planar Schottky barrier diode optimized for high-frequency detection and limiting applications, featuring 5 V reverse breakdown voltage (V_B), 0.8 pF zero-bias capacitance (C_T), 600 mV forward voltage at 1 mA (V_F), 10 mA forward current at 1.0 V (I_F), and 100 nA reverse leakage at rated V_R. It operates from –55 °C to +150 °C and is used in microwave detector stages of radar receivers and RF sampling circuits.

For engineers reviewing the GC9704-UC datasheet, GC9704-UC pinout, GC9704-UC application, or GC9704-UC equivalent, key selection criteria include low junction capacitance for wideband RF response, fast carrier lifetime (<100 ps), true Schottky turn-on behavior without guard ring artifacts, and compatibility with high-reliability pulse shaping and limiter topologies in aerospace and defense systems.

Technical Context

The GC9704-UC employs a planar Schottky construction-distinct from the mesa-based GC9700–GC9702-enabling reproducible junction control and stable high-frequency performance. Its 0.8 pF capacitance at 0 V and 100 ps carrier lifetime support operation into S-band and lower C-band frequencies.

Designed for signal-level RF functions rather than power rectification, the GC9704-UC delivers 5 V breakdown with only 1 nA reverse leakage at rated V_R, confirming tight process control and suitability for low-distortion detector and mixer biasing where leakage-induced offset must be minimized.

Key Specifications

Parameter	Value and Actual Design Meaning
V_B (Min)	5 V - Ensures reliable operation under transient RF voltage peaks up to 5 V without avalanche conduction.
C_T @ 0 V (Max)	0.8 pF - Enables >3 GHz small-signal bandwidth in detector/mixer configurations with minimal capacitive loading.
V_F @ 1 mA (Max)	600 mV - Low forward threshold supports sensitive detection of weak RF signals with minimal insertion loss.
I_F @ 1.0 V (Min)	10 mA - Confirms adequate conduction margin for pulsed limiter duty cycles without thermal runaway.
I_R @ V_R (Max)	100 nA - Guarantees negligible DC offset contribution in precision RF detector outputs.
Carrier Lifetime (TL)	100 ps - Validates ultrafast switching capability required for sub-nanosecond pulse shaping and sampling gate fidelity.

Pinout & Package

GC9704-UC is supplied in chip form (die) without leads or molded package; it features two terminals-Anode and Cathode-on a silicon die with metallized bonding pads. No external pin numbering applies.

Pin/Terminal	Circuit Role	Design Meaning
Anode	RF Signal Input / Forward Conduction Terminal	Connected to RF source in series-detector topology; polarity defines forward bias direction during positive half-cycles.
Cathode	DC Return / Ground Reference Terminal	Typically tied to RF ground plane; establishes reference for detector output voltage and sets DC return path for bias current.

Key Features

Feature	Design Value
Planar Schottky construction	Eliminates diffused guard rings, enabling repeatable junction geometry and stable C_T/V_F matching across wafer lots.
Low 0.8 pF junction capacitance	Permits direct integration into 50 Ω microstrip detector layouts without impedance-matching networks below 4 GHz.
100 ps carrier lifetime	Supports clean time-domain response in gated sampling circuits with <1 ns rise/fall fidelity.
RoHS-compliant gold metallization	Ensures wire-bond reliability and corrosion resistance in hermetic module assemblies for military-grade environments.

Applications

Radar Pulse Detector	RF Limiter Stage
Use Scenario: Detecting short-duration RF pulses in airborne fire-control radar front-ends operating at X-band (8–12 GHz). IC Role / Device Role / Timing Role: Series-connected Schottky diode acting as envelope detector, converting RF pulse amplitude to baseband timing trigger. Use Value: 0.8 pF C_T preserves pulse edge integrity; 100 ps TL ensures sub-nanosecond response to leading-edge transitions.	Use Scenario: Protecting sensitive LNA inputs from high-power transmit leakage in T/R modules of phased-array communication systems. IC Role / Device Role / Timing Role: Shunt-connected limiter diode clamping incident RF voltage before it reaches downstream transistors. Use Value: 5 V V_B sets precise clamping threshold; low V_F minimizes insertion loss during quiescent receive mode.
Sampling Gate Circuit	High-Speed Pulse Shaper
Use Scenario: Sampling analog IF signals at 100 MSPS in digital receiver test equipment using switched-capacitor architectures. IC Role / Device Role / Timing Role: Active switch element in sample-hold gate, turned on/off by local oscillator harmonics. Use Value: 100 ps TL enables accurate aperture time control; 1 nA I_R prevents hold capacitor discharge drift between samples.	Use Scenario: Generating clean, symmetrical square waves from sinusoidal sources in high-speed timing generators for ATE systems. IC Role / Device Role / Timing Role: Clipping diode pair shaping waveform peaks and troughs via symmetric forward conduction limits. Use Value: Matched V_F (600 mV max) ensures balanced positive/negative clipping thresholds; gold metallization sustains bond integrity over 1M+ thermal cycles.

Radar Pulse Detector

RF Limiter Stage

Use Scenario: Detecting short-duration RF pulses in airborne fire-control radar front-ends operating at X-band (8–12 GHz).

IC Role / Device Role / Timing Role: Series-connected Schottky diode acting as envelope detector, converting RF pulse amplitude to baseband timing trigger.

Use Value: 0.8 pF C_T preserves pulse edge integrity; 100 ps TL ensures sub-nanosecond response to leading-edge transitions.

Use Scenario: Protecting sensitive LNA inputs from high-power transmit leakage in T/R modules of phased-array communication systems.

IC Role / Device Role / Timing Role: Shunt-connected limiter diode clamping incident RF voltage before it reaches downstream transistors.

Use Value: 5 V V_B sets precise clamping threshold; low V_F minimizes insertion loss during quiescent receive mode.

Sampling Gate Circuit

High-Speed Pulse Shaper

Use Scenario: Sampling analog IF signals at 100 MSPS in digital receiver test equipment using switched-capacitor architectures.

IC Role / Device Role / Timing Role: Active switch element in sample-hold gate, turned on/off by local oscillator harmonics.

Use Value: 100 ps TL enables accurate aperture time control; 1 nA I_R prevents hold capacitor discharge drift between samples.

Use Scenario: Generating clean, symmetrical square waves from sinusoidal sources in high-speed timing generators for ATE systems.

IC Role / Device Role / Timing Role: Clipping diode pair shaping waveform peaks and troughs via symmetric forward conduction limits.

Use Value: Matched V_F (600 mV max) ensures balanced positive/negative clipping thresholds; gold metallization sustains bond integrity over 1M+ thermal cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky detector/limiter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MACOM MADP-000907-14150T	Higher 15 V V_B, 0.35 pF C_T, 1.1 V V_F at 1 mA; GaAs Schottky process.	Better suited for higher-voltage limiter designs above 10 V; less ideal for low-threshold detection.	Select when higher breakdown and lower capacitance outweigh forward voltage penalty.
Skyworks SMS7621-011	Lower 3 V V_B, 0.45 pF C_T, 370 mV V_F at 1 mA; silicon beam-lead package.	Optimized for ultra-low-V_F detection below 3 GHz; not rated for >100°C operation.	Select when minimum forward voltage dominates over temperature range and breakdown margin.

Compared with GC9704-UC, MADP-000907-14150T offers superior high-frequency bandwidth and voltage headroom but sacrifices low-threshold sensitivity, while SMS7621-011 excels in millivolt-level detection fidelity yet lacks extended temperature and breakdown robustness-making GC9704-UC the balanced choice for demanding X-band radar and hardened sampling applications.

Availability

GC9704-UC is available at Aetrix Electronics and suitable for radar pulse detection, RF limiting, sampling gate circuits, and high-speed pulse shaping requiring stable component supply across extended temperature ranges and long-lifecycle programs.

Supply support for GC9704-UC 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) specialized in high-reliability analog and RF semiconductors for aerospace, defense, and industrial markets, with deep expertise in microwave diodes and radiation-hardened components.

The GC9700 series was developed specifically for broadband RF detection, mixing, and limiting in mission-critical microwave subsystems where parameter stability, low leakage, and fast transient response are non-negotiable.

FAQ

What is the maximum operating temperature for GC9704-UC?

The GC9704-UC is rated for continuous operation from –55 °C to +150 °C. This extended temperature range is validated per Microsemi's qualification testing and makes GC9704-UC suitable for deployment in avionics, downhole tools, and engine-mounted radar modules where ambient thermal stress exceeds commercial-grade limits. The 150 °C upper bound reflects junction temperature capability under specified power dissipation conditions.

Does GC9704-UC require a heatsink in typical RF detector applications?

No, GC9704-UC does not require a heatsink in standard RF detector or limiter roles. As a low-current signal diode with <10 mA peak forward current and nanowatt-level average power dissipation, GC9704-UC operates well within its thermal limits using only die-attach thermal conduction through the package substrate. Heatsinking is unnecessary unless integrated into high-duty-cycle pulsed systems exceeding 10% duty factor at full-rated current.

Is GC9704-UC supplied with lead-free terminations?

Yes, GC9704-UC is RoHS compliant and supplied with gold metallization on its bonding pads-not lead-based solder. The "UC" suffix denotes uncoated, bare-die configuration with sputtered gold contacts compatible with thermosonic wire bonding. No lead, tin, or PbSn alloys are present; compliance is verified per Microsemi's 2009-01-22 revision documentation.

Can GC9704-UC be used in parallel for higher current handling?

No, GC9704-UC is not designed for parallel operation. Its planar Schottky structure lacks inherent current-sharing characteristics, and mismatched V_F or thermal gradients between dies would cause uneven current distribution and potential thermal runaway. For higher current requirements, select a single larger-die device such as GC9702 or consult Microsemi for custom quad configurations instead of paralleling GC9704-UC units.

What is the meaning of the "UC" suffix in GC9704-UC?

The "UC" suffix in GC9704-UC stands for "Uncoated Chip"-indicating a bare silicon die with metallized anode and cathode bonding pads, no encapsulation, no passivation layer beyond native oxide, and no protective coating. This configuration allows direct die attach and wire bonding into custom microwave packages or hybrid circuits, and is distinct from leaded or surface-mount variants like GC9704-00 or GC9704-150A.

GC9704-UC Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: Die

Packaging:: Tray

Product Status:: Active

Diode Type:: Schottky

Voltage - Peak Reverse (Max):: 1V

Current - Max:: -

Capacitance @ Vr, F:: 0.8pF @ 0V, 1MHz

Resistance @ If, F:: -

Power Dissipation (Max):: -

Operating Temperature:: -55°C ~ 150°C

Grade:: -

Qualification:: -

Supplier Device Package:: Chip

GC9704-UC FAQ

1.How can I place an order for GC9704-UC through Aetrix?

Please submit a Request for Quotation (RFQ) for GC9704-UC 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 GC9704-UC reliable?

The price and inventory of GC9704-UC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GC9704-UC is usually 5 days.

3.What payment methods are accepted for GC9704-UC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GC9704-UC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for GC9704-UC?

GC9704-UC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your GC9704-UC 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 GC9704-UC?

For technical support, including GC9704-UC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GC9704-UC requirements.

6.How does Aetrix verify that GC9704-UC is sourced from the original manufacturer or authorized distributors?

All GC9704-UC 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 GC9704-UC meets industry standards.

7.What is the process for return or replacement of GC9704-UC?

All GC9704-UC units undergo pre-shipment inspection (PSI). If there is an issue with GC9704-UC, 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 GC9704-UC part is unused and in its original packaging.

Return procedure for GC9704-UC:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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