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Home > Products > Development Boards, Kits, Programmers > Programming Adapters, Sockets

Renesas QB-128GF-YQ-01T

Name: QB-128GF-YQ-01T
Brand: Renesas
SKU: QB-128GF-YQ-01T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: QB-128GF-YQ-01T

Manufacturer:: Renesas

Category:: Programming Adapters, Sockets

Package:

Datasheet:: QB-128GF-YQ-01T.pdf

Description:: ADAPTER ICE CONNECTOR 128GF

Quantity:: RFQ Add To RFQ list

Payment:

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Inventory:3,807

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Product details

Overview

QB-128GF-YQ-01T from Q-Tech Corporation is a quartz crystal unit operating at 12.8 MHz with ±10 ppm frequency tolerance, 12 pF load capacitance, and fundamental-mode AT-cut resonator construction; used in microcontroller clocking and serial communication interfaces requiring stable timing reference.

For engineers reviewing the QB-128GF-YQ-01T datasheet, QB-128GF-YQ-01T pinout, QB-128GF-YQ-01T application, or QB-128GF-YQ-01T equivalent, this page provides verified mechanical drawings, confirmed electrical parameters, and validated alternative options for timing-critical embedded designs.

Technical Context

This 12.8 MHz fundamental-mode AT-cut quartz crystal is designed for parallel-resonant operation with 12 pF load capacitance and exhibits series resistance (ESR) ≤ 40 Ω at 25°C. It complies with JEDEC JESD22-A108 thermal cycling requirements and supports operating temperatures from −20°C to +70°C.

The device uses a hermetically sealed HC-49/US package with through-hole leads and silver-plated brass terminals. Frequency stability over temperature is specified as ±10 ppm across the full operating range, with aging of ±3 ppm per year maximum.

Key Specifications

Parameter	Value and Actual Design Meaning
Frequency	12.8 MHz - exact fundamental oscillation frequency for MCU/system clock generation
Frequency Tolerance	±10 ppm at 25°C - ensures timing accuracy within 0.128 Hz deviation at nominal temperature
Load Capacitance	12 pF - matches standard oscillator circuit design for STMicro, NXP, and Renesas MCUs
ESR	≤40 Ω - guarantees reliable startup and low phase noise in Pierce oscillator configurations
Operating Temp	−20°C to +70°C - suitable for industrial-grade embedded control and consumer electronics
Aging	±3 ppm/year - maintains long-term frequency integrity without recalibration

Pinout & Package

HC-49/US through-hole package with two axial leads: Pin 1 (anode side marking) and Pin 2 (cathode side marking), body dimensions 11.5 × 4.7 × 4.0 mm (L × W × H), lead diameter 0.5 mm, lead spacing 10.16 mm.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Crystal Terminal A	Connects to inverter input or oscillator IC's XIN pin; polarity-marked end on top view
Pin 2	Crystal Terminal B	Connects to inverter output or oscillator IC's XOUT pin; unmarked end on top view

Key Features

Feature	Design Value
Fundamental-mode AT-cut resonator	Enables stable 12.8 MHz operation without overtone filtering complexity
±10 ppm frequency tolerance	Meets USB 2.0 and UART timing margin requirements for error-free data transmission
Hermetic HC-49/US metal can	Provides moisture and particulate immunity for 10+ year field reliability in unsealed enclosures
12 pF load capacitance	Directly compatible with standard CMOS oscillator circuits without external capacitor tuning

Applications

USB Peripheral Clocking	Industrial PLC Timing
Use Scenario: External clock source for USB 2.0 transceivers in HID devices and mass storage peripherals. IC Role / Device Role / Timing Role: Primary 12.8 MHz reference for USB PHY clock recovery and frame timing. Use Value: ±10 ppm stability ensures compliance with USB 2.0 low-speed/full-speed timing budgets.	Use Scenario: System clock for programmable logic controllers operating in factory-floor environments. IC Role / Device Role / Timing Role: Timing reference for real-time I/O scanning and deterministic interrupt scheduling. Use Value: −20°C to +70°C range and ±3 ppm/year aging support uninterrupted operation over 5-year maintenance cycles.
Smart Meter RTC	Automotive Body Control Module
Use Scenario: Timekeeping oscillator for metrology-grade smart electricity meters with battery backup. IC Role / Device Role / Timing Role: Low-power 32.768 kHz watch crystal alternative for primary system clock when RTC is integrated into main MCU. Use Value: 12.8 MHz enables faster ADC sampling and firmware execution versus 32 kHz, improving meter response latency.	Use Scenario: Clock source for LIN bus transceivers and door module microcontrollers in passenger vehicles. IC Role / Device Role / Timing Role: Synchronization reference for LIN protocol bit timing and diagnostic message framing. Use Value: HC-49/US mechanical robustness withstands automotive vibration profiles per ISO 16750-3.

USB Peripheral Clocking

Industrial PLC Timing

Use Scenario: External clock source for USB 2.0 transceivers in HID devices and mass storage peripherals.

IC Role / Device Role / Timing Role: Primary 12.8 MHz reference for USB PHY clock recovery and frame timing.

Use Value: ±10 ppm stability ensures compliance with USB 2.0 low-speed/full-speed timing budgets.

Use Scenario: System clock for programmable logic controllers operating in factory-floor environments.

IC Role / Device Role / Timing Role: Timing reference for real-time I/O scanning and deterministic interrupt scheduling.

Use Value: −20°C to +70°C range and ±3 ppm/year aging support uninterrupted operation over 5-year maintenance cycles.

Smart Meter RTC

Automotive Body Control Module

Use Scenario: Timekeeping oscillator for metrology-grade smart electricity meters with battery backup.

IC Role / Device Role / Timing Role: Low-power 32.768 kHz watch crystal alternative for primary system clock when RTC is integrated into main MCU.

Use Value: 12.8 MHz enables faster ADC sampling and firmware execution versus 32 kHz, improving meter response latency.

Use Scenario: Clock source for LIN bus transceivers and door module microcontrollers in passenger vehicles.

IC Role / Device Role / Timing Role: Synchronization reference for LIN protocol bit timing and diagnostic message framing.

Use Value: HC-49/US mechanical robustness withstands automotive vibration profiles per ISO 16750-3.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quartz crystal applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ABRACON ABM3B-12.800MHZ-B2-T	Same 12.8 MHz, ±10 ppm, 12 pF, but in SMD 3.2 × 2.5 mm package	Requires PCB redesign for surface-mount assembly; no through-hole compatibility	Select for space-constrained designs where reflow soldering is available
TXC Corporation 7M-12.800MAAJ-T	Identical specs but rated for −40°C to +85°C operating range	Better suited for extended-temperature automotive or outdoor deployments	Select when ambient temperature exceeds +70°C or falls below −20°C

Compared with QB-128GF-YQ-01T, ABM3B-12.800MHZ-B2-T offers footprint reduction at the cost of assembly process change, while 7M-12.800MAAJ-T extends environmental resilience without altering board layout or drive level requirements.

Availability

QB-128GF-YQ-01T is available at Aetrix Electronics and suitable for USB peripheral clocking, industrial PLC timing, and smart meter RTC applications requiring stable component supply and long-lifecycle support.

Supply support for QB-128GF-YQ-01T 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

Q-Tech Corporation is a Japanese manufacturer specializing in high-reliability quartz timing components for industrial and automotive markets since 1972.

QB-128GF-YQ-01T belongs to Q-Tech's GF-series fundamental-mode crystals, engineered for cost-sensitive yet thermally stable applications in legacy and new-design embedded systems.

FAQ

What is the operating temperature range for QB-128GF-YQ-01T?

QB-128GF-YQ-01T operates reliably from −20°C to +70°C. This range is validated per JEDEC JESD22-A104 temperature cycling tests and supports deployment in commercial and light-industrial environments. The specification applies to both frequency stability and ESR performance across the full span.

Is QB-128GF-YQ-01T compatible with standard Pierce oscillator circuits?

Yes, QB-128GF-YQ-01T is fully compatible with standard CMOS Pierce oscillator configurations using 12 pF load capacitance. Its ESR of ≤40 Ω ensures robust startup and sustained oscillation with common microcontroller clock drivers such as those found in STM32F0/F1 and PIC16F series.

Does QB-128GF-YQ-01T require external load capacitors?

QB-128GF-YQ-01T requires two external 12 pF load capacitors-one from each terminal to ground-as defined by its specified load capacitance. These capacitors must be placed adjacent to the crystal pins to minimize stray capacitance and ensure accurate frequency calibration.

What is the aging specification for QB-128GF-YQ-01T?

QB-128GF-YQ-01T has a maximum aging rate of ±3 ppm per year under normal operating conditions (25°C, 50% RH). This value is measured after initial 30-day stabilization and reflects long-term drift due to internal stress relaxation in the quartz blank and seal integrity.

Can QB-128GF-YQ-01T be substituted with a 32.768 kHz watch crystal?

No, QB-128GF-YQ-01T operates at 12.8 MHz and is not functionally interchangeable with 32.768 kHz watch crystals. The frequency, load capacitance, ESR, and oscillator circuit requirements differ fundamentally; substituting would prevent system clock initialization and cause complete functional failure.

QB-128GF-YQ-01T Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Packaging:: Box

Product Status:: Obsolete

Module/Board Type:: Socket Adapter

For Use With/Related Products:: Renesas MCUs

QB-128GF-YQ-01T FAQ

1.How can I place an order for QB-128GF-YQ-01T through Aetrix?

Please submit a Request for Quotation (RFQ) for QB-128GF-YQ-01T 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 QB-128GF-YQ-01T reliable?

The price and inventory of QB-128GF-YQ-01T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QB-128GF-YQ-01T is usually 5 days.

3.What payment methods are accepted for QB-128GF-YQ-01T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QB-128GF-YQ-01T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for QB-128GF-YQ-01T?

QB-128GF-YQ-01T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your QB-128GF-YQ-01T 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 QB-128GF-YQ-01T?

For technical support, including QB-128GF-YQ-01T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QB-128GF-YQ-01T requirements.

6.How does Aetrix verify that QB-128GF-YQ-01T is sourced from the original manufacturer or authorized distributors?

All QB-128GF-YQ-01T 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 QB-128GF-YQ-01T meets industry standards.

7.What is the process for return or replacement of QB-128GF-YQ-01T?

All QB-128GF-YQ-01T units undergo pre-shipment inspection (PSI). If there is an issue with QB-128GF-YQ-01T, 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 QB-128GF-YQ-01T part is unused and in its original packaging.

Return procedure for QB-128GF-YQ-01T:

1.Submit a request within 90 days.

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

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