Renesas QB-38SP-HQ-01T

Overview

QB-38SP-HQ-01T from Renesas Electronics is a 38-pin target connector designed for use with the QB-RL78I1A in-circuit emulator to interface with RL78/I1A microcontroller-based target systems. It provides mechanical and electrical connection between the YQ connector and the target PCB, supports 38-pin SP package devices, operates within 2.7–5.5 V supply range, and enables real-time debugging via trace and break functions. It is used during embedded firmware development for industrial control and automotive subsystems.

For engineers reviewing the QB-38SP-HQ-01T datasheet, QB-38SP-HQ-01T pinout, QB-38SP-HQ-01T application, or QB-38SP-HQ-01T equivalent, this page delivers verified mechanical interface specifications, target system integration guidance, emulator compatibility details, and OEM procurement support for RL78/I1A development workflows.

Technical Context

The QB-38SP-HQ-01T is a passive, solder-mount target connector engineered exclusively for the RL78/I1A 38-pin SP package. It mates with the QB-38SP-NQ-01T target connector and QB-38SP-YQ-01T YQ connector to form a rigid, low-inductance debug interface path between the QB-RL78I1A emulator and the user's PCB.

It supports full signal integrity for high-speed emulation up to 64 MHz PLL-derived clocks and maintains GND/VDD continuity across all 38 pins. Its design complies with Renesas' IECUBE mechanical interface standard and requires no active circuitry, voltage translation, or configuration.

Key Specifications

Availability

QB-38SP-HQ-01T is available at Aetrix Electronics and suitable for industrial automation, automotive ECU prototyping, and RL78-based embedded control applications requiring stable component supply and guaranteed compatibility with Renesas' QB-RL78I1A emulator platform.

Supply support for QB-38SP-HQ-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

Renesas Electronics Corporation is a global semiconductor manufacturer specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT applications.

QB-38SP-HQ-01T belongs to the IECUBE in-circuit emulator accessory product line, designed specifically to enable reliable, low-risk physical interfacing between Renesas emulators and RL78-family target hardware during firmware validation and timing-critical debugging.

FAQ

What is the primary function of QB-38SP-HQ-01T in an RL78/I1A development setup?

QB-38SP-HQ-01T serves as a mount adapter that secures the RL78/I1A 38-pin SP package device onto the QB-38SP-NQ-01T target connector. It ensures precise mechanical alignment and stable electrical contact during emulation, enabling full debug functionality-including real-time trace, breakpoint, and register access-without soldering the MCU directly to the target board. QB-38SP-HQ-01T is essential when using socket-based prototyping with the QB-RL78I1A emulator.

Is QB-38SP-HQ-01T compatible with any emulator other than QB-RL78I1A?

No. QB-38SP-HQ-01T is mechanically and electrically specified only for use with the QB-RL78I1A in-circuit emulator system and its associated QB-38SP-series adapters (QB-38SP-EA-01T, QB-38SP-YQ-01T, QB-38SP-NQ-01T). It does not interface with third-party emulators, JTAG debuggers, or Renesas' E2 or E2 Lite tools. Compatibility is limited to the IECUBE platform and RL78/I1A 38-pin SP package.

What are the soldering requirements for QB-38SP-HQ-01T during assembly?

QB-38SP-HQ-01T must be mounted using surface-mount reflow soldering at ≤260°C for 10 seconds maximum, or manual soldering at ≤350°C for 5 seconds per pin. Flux immersion or vapor cleaning is prohibited. The adapter must be installed before soldering the NQ connector to avoid flux contamination on contact surfaces. Mechanical fastening uses four M2 × 10 mm screws tightened to 0.054 Nm maximum torque.

Does QB-38SP-HQ-01T include any active circuitry or signal conditioning?

No. QB-38SP-HQ-01T is a passive mechanical mount adapter with no integrated electronics, resistors, capacitors, or level-shifting components. It provides direct pin-to-pin connectivity between the RL78/I1A 38-pin SP package and the QB-38SP-NQ-01T target connector. Signal integrity relies entirely on proper PCB layout, connector mating, and adherence to Renesas' grounding and decoupling guidelines in the QB-RL78I1A User's Manual.

Can QB-38SP-HQ-01T be reused across multiple prototype iterations?

Yes. QB-38SP-HQ-01T is designed for repeated insertion and removal of the RL78/I1A MCU in socket-based development. Its precision-machined contacts and screw-retained mounting allow for ≥50 mating cycles without degradation, provided handling follows Renesas' precautions: no bending of pins, no forceful unplugging, and avoidance of electrostatic discharge. Visual inspection of contact pins is recommended before each reuse.