Renesas RKZ16TJKG#P1

Overview

RKZ16TJKG#P1 from Renesas Electronics is a silicon planar Zener diode designed for surge absorption and voltage stabilization in compact surface-mount applications. It delivers a nominal Zener voltage of 16.2 V (min 15.85 V, max 16.51 V) at 5 mA, with dynamic resistance of 40 Ω, power dissipation of 200 mW, and ESD capability of ±25 kV (IEC 61000-4-2, C = 150 pF, R = 330 Ω). It is used in overvoltage protection circuits for microcontroller I/O lines and sensor signal conditioning.

For engineers reviewing the RKZ16TJKG#P1 datasheet, RKZ16TJKG#P1 pinout, RKZ16TJKG#P1 application, or RKZ16TJKG#P1 equivalent, key selection criteria include its 16.2 V Zener voltage tolerance, 40 Ω dynamic impedance at 5 mA, URP (SC-76A) package footprint, 25 kV ESD rating, and suitability for low-power surge clamping in space-constrained industrial control modules.

Technical Context

This device operates as a two-terminal voltage reference and transient suppressor, leveraging silicon planar junction technology to achieve stable reverse breakdown with low temperature coefficient near zero crossing (~0.02 %/°C at ~16 V). Its ultra-small URP package enables high-density PCB layout while maintaining thermal performance up to 150°C junction temperature.

The RKZ16TJKG#P1 is characterized under pulsed test conditions (Pw = 40 ms) and exhibits non-repetitive surge reverse power handling up to ~1.2 W for 100 μs pulses. Its reverse current remains ≤2 μA at VR = 12.0 V, supporting precise clamping in low-leakage analog front-ends.

Key Specifications

Pinout & Package

Ultra-small Resin Package (URP, JEITA code SC-76A) with 2-pin surface-mount configuration: 1.0 mm body length, 0.8 mm height, 0.9 mm terminal pitch, and typical mass of 0.004 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C16LT1G and MMSZ4687T1G, the RKZ16TJKG#P1 offers superior ESD robustness (±25 kV vs. ≤±16 kV), smallest footprint (URP vs. SOT-23/SOD-123), and tighter Zener voltage tolerance (±2.1% vs. ±5%), making it optimal for space-constrained, high-immunity industrial edge nodes.

Availability

RKZ16TJKG#P1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller I/O protection, and DC-DC feedback stabilization requiring stable component supply, halogen-free compliance, and high-reliability surge suppression.

Supply support for RKZ16TJKG#P1 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 delivering microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise applications.

The RKZ-KG Series targets compact, high-density surge protection and voltage stabilization in industrial control, sensor modules, and embedded power management-designed specifically for reliability in harsh electrical environments.

FAQ

What is the Zener voltage tolerance of RKZ16TJKG#P1 at 5 mA?

The RKZ16TJKG#P1 has a guaranteed Zener voltage range of 15.85 V to 16.51 V at I_Z = 5 mA, corresponding to ±2.1% tolerance around the nominal 16.2 V value. This tight specification ensures predictable clamping behavior in precision voltage reference and overvoltage protection circuits where consistent trip thresholds are critical. The RKZ16TJKG#P1 achieves this via process-controlled silicon planar junction fabrication and 100% parametric screening.

Does RKZ16TJKG#P1 meet RoHS and halogen-free requirements?

Yes, RKZ16TJKG#P1 is certified halogen-free and lead-free per JEDEC J-STD-020 and RoHS Directive 2011/65/EU. It belongs to the RKZ-KG-P6 series explicitly designated as environmentally friendly, with no brominated flame retardants, chlorine, or lead in die attach, molding compound, or termination plating. The RKZ16TJKG#P1 complies with IPC-J-STD-609B Class 1 definitions for halogen content.

What is the maximum non-repetitive surge power RKZ16TJKG#P1 can handle?

The RKZ16TJKG#P1 supports non-repetitive surge reverse power (PRSM) up to approximately 1.2 W for 100 μs pulses, as derived from the surge reverse power rating curve in the datasheet. This capability enables effective suppression of fast transients such as EFT (electrical fast transients) and contact ESD without degradation. The RKZ16TJKG#P1 must be operated within its 200 mW steady-state power limit for continuous DC conditions.

How does the URP package of RKZ16TJKG#P1 compare to standard SOD-323 or SOT-23?

The URP (SC-76A) package of RKZ16TJKG#P1 measures 2.0 × 1.25 × 0.8 mm-smaller than SOD-323 (1.7 × 1.3 × 0.9 mm) and significantly smaller than SOT-23 (2.9 × 1.3 × 1.0 mm)-enabling higher component density in space-constrained designs like wearable sensors or modular PLC I/O cards. Its 0.9 mm terminal pitch and 0.004 g mass also reduce mechanical stress during thermal cycling. The RKZ16TJKG#P1's URP footprint is optimized for fine-pitch reflow processes.

Is RKZ16TJKG#P1 suitable for use in DC-DC converter feedback networks?

Yes, RKZ16TJKG#P1 is suitable for stabilizing feedback divider nodes in adjustable DC-DC converters due to its low temperature coefficient (~0.02 %/°C), tight Zener voltage tolerance (±2.1%), and stable dynamic resistance (40 Ω). When placed across the upper resistor in a resistive divider, it maintains reference accuracy across –40 to +85°C ambient. The RKZ16TJKG#P1 avoids the drift issues associated with standard Zeners below 5 V or above 24 V, making it ideal for mid-range output regulation.