Nexperia USA Inc. PLVA653A,215

Overview

PLVA653A from Nexperia is a low-voltage avalanche regulator diode in SOT23 (TO-236AB) package, designed for precision voltage stabilization at 5.30 V nominal working voltage with ±0.20 V line regulation (100 µA to 1 mA), 250 Ω dynamic resistance, and 22 nA reverse current at 50 % VZ. It serves as a low-noise, low-power reference in CMOS RAM backup and voltage limiter circuits.

For engineers reviewing the PLVA653A datasheet, PLVA653A pinout, PLVA653A application, or PLVA653A equivalent, this page delivers verified electrical parameters, validated SOT23 terminal mapping, confirmed low-noise performance (1.0 µV/√Hz), and real-world use cases in battery-backed memory and smoke detector relay control.

Technical Context

This device operates in the avalanche breakdown region with hard knee characteristics, enabling stable regulation at low currents (250 µA typical test condition) and minimal voltage drift over temperature (1.60 mV/K coefficient). Its low dynamic impedance (250 Ω) and ultra-low noise density (≤1.0 µV/√Hz at 1 kHz) distinguish it from conventional Zener diodes.

The SOT23 package supports surface-mount reflow assembly with R_th(j-a) = 500 K/W (free air) and R_th(j-sp) = 330 K/W (solder point), while non-repetitive peak reverse power dissipation reaches 30 W under 100 µs pulses at 150 °C junction temperature.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads, 1.9 mm × 1.3 mm footprint, 0.95 mm height, and standard reflow-compatible solder lands per Fig. 2 (SOT023_FR).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-voltage shunt regulator applications.

Compared with BZX84-C5V1 and MMBZ5222BS, PLVA653A uniquely balances ultra-low leakage (22 nA), low noise (≤1.0 µV/√Hz), and tight line regulation (0.2 V), making it optimal for long-life, low-noise, precision-shunt applications where both stability and efficiency are critical.

Availability

PLVA653A is available at Aetrix Electronics and suitable for CMOS RAM backup circuits, low-noise sensor interface voltage limiters, and smoke detector relay protection systems requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for PLVA653A 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.

The PLVA6xxA series was developed specifically for low-voltage, low-noise shunt regulation in space-constrained, battery-sensitive applications such as memory backup and safety-critical sensor interfaces.

FAQ

What is the maximum continuous reverse power dissipation for PLVA653A at 25 °C ambient?

The total power dissipation is rated at 250 mW when mounted on an FR4 PCB with single-sided copper and standard footprint. This value assumes free-air convection cooling and defines the steady-state thermal limit before junction temperature exceeds 150 °C. Derating is required above 25 °C ambient per the 500 K/W junction-to-ambient thermal resistance.

Can PLVA653A be used as a replacement for standard 5.1 V Zener diodes like BZX84-C5V1?

PLVA653A provides tighter regulation (5.30 V ±0.20 V vs. 5.1 V ±5 %), lower leakage (22 nA vs. ~100 nA), and significantly lower noise (≤1.0 µV/√Hz), but its 250 Ω dynamic resistance is higher than some alternatives. It is not a direct drop-in replacement where low impedance dominates, but excels where low noise and leakage are prioritized.

What does "n.c." on Pin 2 signify in the SOT23 package?

Pin 2 is internally not connected-no bond wire or die connection exists. It must remain unconnected on the PCB; no trace, pad, or solder joint should be placed there. This configuration reduces parasitic capacitance and avoids unintended coupling paths in high-frequency or low-noise layouts.

How does the +1.60 mV/K temperature coefficient affect circuit design?

The positive temperature coefficient means output voltage increases by 1.60 mV per degree Celsius rise in junction temperature. In precision references, this drift must be compensated-either via complementary negative-coefficient components or system-level calibration-especially in environments with >20 °C ambient variation.