Renesas RKZ2.0BKL#R1

Overview

RKZ2.0BKL#R1 from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power analog and reference circuits, featuring a nominal zener voltage of 2.0 V ±5%, 700 mW power dissipation, dynamic resistance of 130 Ω at 10 mA, and ESD capability of 30 kV (HBM). It operates as a shunt voltage reference in power supply feedback loops and sensor biasing networks.

For engineers reviewing the RKZ2.0BKL#R1 datasheet, RKZ2.0BKL#R1 pinout, RKZ2.0BKL#R1 application, or RKZ2.0BKL#R1 equivalent, this device is selected for stable low-voltage reference generation where tight tolerance, low dynamic impedance, and surface-mount compactness are required in space-constrained industrial and consumer electronics.

Technical Context

This Zener diode employs a planar silicon junction structure optimized for stable reverse-breakdown behavior under DC and low-frequency conditions. Its 2.0 V nominal zener voltage falls within the region of negative temperature coefficient (–0.08 %/°C typical), enabling predictable thermal drift in reference designs.

The SRP-F flat-lead package supports high-density SMT assembly with defined thermal pad layout (10 × 10 mm solder land on 50 × 50 mm glass-epoxy board), and its absolute maximum junction temperature of 150°C ensures reliability in ambient temperatures up to 125°C at derated power.

Key Specifications

Pinout & Package

Package: SRP-F (Small Resin Package Flat lead type), JEITA code LP, Renesas code PWSF0002ZB-A - a compact 2-pin surface-mount package with gull-wing leads, footprint dimensions 2.5 mm × 1.2 mm × 0.6 mm (L × W × H), suitable for automated placement and reflow.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5221BS-7-F and BZX84-C2V0, the RKZ2.0BKL#R1 delivers 2.3× and 2.3× higher power handling respectively, enabling direct use in 5–10 mA reference sinks without external series limiting-critical for active feedback networks in programmable power supplies and precision DAC buffers.

Availability

RKZ2.0BKL#R1 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB peripheral power regulation, and portable medical diagnostic front-ends requiring stable component supply with full traceability and lifecycle management.

Supply support for RKZ2.0BKL#R1 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 connectivity solutions for industrial, automotive, and enterprise applications.

The RKZ-KV Series was developed specifically for compact, high-reliability voltage reference and regulation in surface-mount power management subsystems-emphasizing tight tolerance, low dynamic impedance, and robust ESD performance in space-constrained designs.

FAQ

What is the exact zener voltage tolerance and test condition for RKZ2.0BKL#R1?

The RKZ2.0BKL#R1 has a zener voltage of 2.0 V with ±5% tolerance, measured at a test current of 10 mA (I_Z = 10 mA) and ambient temperature of 25°C. This specification is confirmed in the Electrical Characteristics table of Renesas document REJ03G1700-0100 Rev.1.00, ensuring predictable regulation in low-current reference applications where RKZ2.0BKL#R1 is deployed.

Does RKZ2.0BKL#R1 support high-temperature operation beyond 85°C?

Yes, RKZ2.0BKL#R1 is rated for junction temperatures up to 150°C and storage temperatures from –55°C to +150°C. When mounted per the specified PCB layout (50 × 50 mm glass-epoxy board with 10 × 10 mm solder land), it maintains regulation stability up to 125°C ambient-making RKZ2.0BKL#R1 suitable for under-hood industrial controls and enclosed metering equipment.

What is the thermal resistance (R_θJA) of RKZ2.0BKL#R1 in its SRP-F package?

Renesas does not publish an explicit R_θJA value for RKZ2.0BKL#R1; however, the Absolute Maximum Ratings specify 700 mW power dissipation under defined board conditions (50 × 50 mm glass-epoxy, 10 × 10 mm copper pad), implying an effective R_θJA of approximately 357°C/W. This thermal performance enables RKZ2.0BKL#R1 to operate reliably without heatsinking in most low-power reference designs.

Is RKZ2.0BKL#R1 RoHS compliant and halogen-free?

Yes, RKZ2.0BKL#R1 conforms to EU RoHS Directive 2011/65/EU and is halogen-free per Renesas' environmental compliance documentation. The SRP-F package uses lead-free matte tin plating and green molding compound-ensuring RKZ2.0BKL#R1 meets modern environmental standards for industrial and consumer electronics manufacturing.

Can RKZ2.0BKL#R1 be used in place of a 2.0 V bandgap reference IC?

RKZ2.0BKL#R1 serves as a discrete shunt reference-not a buffered, temperature-compensated bandgap IC. It provides basic 2.0 V regulation with predictable negative TC and moderate accuracy, making RKZ2.0BKL#R1 appropriate for cost-sensitive, non-critical biasing where IC-level precision and output drive are unnecessary-such as LED current setting or simple comparator thresholds.