Renesas RKZ6.2BKP#R5

Overview

RKZ6.2BKP#R5 from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power analog and reference circuits, with a nominal Zener voltage of 6.2 V (min 5.86 V, max 6.53 V at 10 mA), dynamic resistance of 50 Ω, power dissipation rating of 700 mW, and ESD capability of ±30 kV (HBM). It operates as a two-terminal shunt regulator in feedback paths, voltage clamps, and reference nodes.

For engineers reviewing the RKZ6.2BKP#R5 datasheet, RKZ6.2BKP#R5 pinout, RKZ6.2BKP#R5 application, or RKZ6.2BKP#R5 equivalent, key selection criteria include its tight 6.2 V tolerance (±5.2%), low rd for stable regulation under varying load, SRP-F surface-mount package compatibility with high-density PCB layouts, and robust ESD immunity essential for industrial sensor interfaces and automotive body electronics.

Technical Context

This device functions as a passive shunt regulator, maintaining constant voltage across its terminals by conducting reverse current above the Zener breakdown threshold. Its temperature coefficient is near-zero around 6.2 V (≈0.02 %/°C per Fig.2), minimizing drift in precision references. The SRP-F flat-lead package enables thermal coupling to PCB copper for improved power handling up to 700 mW at 25°C ambient.

Electrical behavior is defined under pulsed test conditions (Pw = 40 ms) to avoid self-heating artifacts; rated reverse current IR ≤ 2 µA at VR = 3 V ensures low leakage in standby modes. ESD robustness (±30 kV HBM) supports handling in non-ESD-protected assembly environments without additional protection circuitry.

Key Specifications

Pinout & Package

Package: SRP-F (Small Resin Package Flat lead type), JEITA code LP, Renesas code PWSF0002ZB-A - 2-pin surface-mount package with 1.6 mm × 2.8 mm footprint, 0.6 mm height, and gull-wing leads for automated reflow assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Compared with MMSZ4687T1G and BZX84-C6V2, RKZ6.2BKP#R5 delivers higher power handling (700 mW), lower dynamic resistance (50 Ω), and certified ±30 kV ESD immunity-making it preferred for industrial and automotive applications demanding reliability under electrical stress and thermal variation.

Availability

RKZ6.2BKP#R5 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive body control module references, and medical diagnostic equipment requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for RKZ6.2BKP#R5 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 leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.

The RKZ-KV Series is engineered for high-stability voltage regulation in space-constrained surface-mount applications, targeting precision analog subsystems where low drift, high ESD resilience, and consistent Zener characteristics are critical.

FAQ

What is the Zener voltage tolerance of RKZ6.2BKP#R5?

The RKZ6.2BKP#R5 has a Zener voltage range of 5.86 V to 6.53 V at 10 mA test current, corresponding to a ±5.2% tolerance about the nominal 6.2 V value. This is verified per Renesas preliminary datasheet REJ03G1700-0100, page 2, under Electrical Characteristics. The tolerance remains stable across the –55°C to +150°C storage temperature range.

Does RKZ6.2BKP#R5 require heatsinking in standard PCB layouts?

No, RKZ6.2BKP#R5 does not require external heatsinking when mounted on a standard 50 × 50 mm glass-epoxy PCB with 10 × 10 mm solder land, as specified in the Absolute Maximum Ratings table. Its 700 mW power dissipation rating is validated under those conditions. For higher ambient temperatures or smaller copper areas, derating per Figure 3 (Power Dissipation vs. Ambient Temperature) is required.

Is RKZ6.2BKP#R5 compatible with lead-free reflow processes?

Yes, RKZ6.2BKP#R5 uses Pb-free terminations and is qualified for standard lead-free reflow profiles (JEDEC J-STD-020), including peak temperatures up to 260°C. The SRP-F package construction and internal die attach materials meet RoHS compliance requirements as confirmed in Renesas documentation and packaging code PWSF0002ZB-A.

What is the meaning of the laser mark "6 ⋅ 2" on RKZ6.2BKP#R5?

The laser mark "6 ⋅ 2" on RKZ6.2BKP#R5 is the manufacturer's identification code for the 6.2 V Zener variant within the RKZ-KV Series, as documented on page 3 of REJ03G1700-0100. It appears adjacent to a date code (e.g., "09G" for September 2009) and is used for rapid visual verification during inspection and assembly.

Can RKZ6.2BKP#R5 be used as a replacement for older through-hole Zeners like 1N4735A?

RKZ6.2BKP#R5 provides equivalent 6.2 V regulation but is not a drop-in mechanical replacement for 1N4735A due to its SRP-F surface-mount package versus DO-41 through-hole. Electrically, it offers tighter tolerance (±5.2% vs. ±5%), lower r_d (50 Ω vs. 7 Ω typical), and higher ESD immunity (±30 kV vs. unspecified), making it suitable for modern high-density designs where board space and robustness are prioritized over legacy form factor.