NXP Semiconductors PLVA650A/LF1R

Overview

PLVA650A from Nexperia is a low-voltage avalanche regulator diode in SOT23 (TO-236AB) package, designed for precision voltage stabilization at 5.00 V nominal working voltage with ±0.20 V tolerance, 700 Ω dynamic resistance at 250 µA, and ultra-low reverse current of 34 nA at 50 % VZ. It serves as a low-noise, low-power reference in CMOS RAM backup and voltage-limiting circuits.

For engineers reviewing the PLVA650A datasheet, PLVA650A pinout, PLVA650A application, or PLVA650A equivalent, this page delivers verified specifications including noise voltage density (≤1.0 µV/√Hz), line regulation (0.4 V over 100 µA–1 mA), thermal resistance (500 K/W), junction temperature limit (150 °C), and SOT23 pin configuration - all critical for low-current analog and memory retention designs.

Technical Context

The PLVA650A operates as a Zener-type avalanche regulator diode optimized for low-current (<1 mA) stabilization with hard breakdown knee and minimal voltage drift. Its 5.00 V nominal Zener voltage is specified at IZ = 250 µA and exhibits a positive temperature coefficient of +0.20 mV/K, enabling predictable thermal behavior in ambient-stable environments.

It delivers low-noise performance (≤1.0 µV/√Hz at 1 kHz) and high impedance stability across its operating range, supported by a non-repetitive peak reverse power dissipation of 30 W (100 µs pulse, 150 °C). The device is rated for total power dissipation of 250 mW at 25 °C ambient on FR4 PCB.

Key Specifications

Pinout & Package

PLVA650A uses the SOT23 (TO-236AB) surface-mount plastic package: 3-pin, small outline, FR4-compatible footprint (2.8 × 1.4 mm body, 0.95 mm height), with standard reflow/wave soldering land patterns per Nexperia's SOT023_FR/SOT023_FW guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C5V1 and MMSZ5222BT1G, the PLVA650A delivers tighter VZ tolerance (±4%), lower leakage (34 nA vs ≥100 nA), lower noise (≤1.0 µV/√Hz), and superior low-current regulation - making it uniquely suited for battery-critical, low-noise, and precision-clamp applications where µA-level stability matters.

Availability

PLVA650A is available at Aetrix Electronics and suitable for CMOS RAM backup circuits, low-power MCU peripheral regulation, sensor signal chain clamping, and smoke detector relay protection requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing.

Supply support for PLVA650A 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 leading global semiconductor manufacturer specializing in high-performance, high-reliability discrete, logic, and MOSFET solutions, headquartered in Nijmegen, Netherlands.

The PLVA6xxA series was developed specifically for low-noise, low-leakage voltage regulation in space-constrained, battery-sensitive applications - emphasizing precision Zener characteristics, hard breakdown behavior, and SOT23 manufacturability.

FAQ

What is the nominal Zener voltage and tolerance of PLVA650A?

The PLVA650A has a nominal Zener voltage of 5.00 V, specified at IZ = 250 µA, with a guaranteed working voltage range of 4.80 V to 5.20 V (±0.20 V tolerance). This tight tolerance enables accurate voltage clamping without calibration in low-power analog and memory retention circuits - a key differentiator versus standard ±5 % Zeners.

What is the reverse leakage current specification for PLVA650A?

The PLVA650A exhibits a reverse current (IR) of 34 nA at VR = 50 % VZ (2.5 V), and ≤20 µA at VR = 90 % VZ (4.5 V). This ultra-low leakage is essential for extending battery life in CMOS RAM backup and always-on sensor nodes - significantly lower than typical Zeners rated at >100 nA under identical conditions.

Does PLVA650A have a specified noise voltage density?

Yes, the PLVA650A has a noise voltage density of ≤1.0 µV/√Hz at f = 1 kHz with 1 kHz bandwidth and IZ = 250 µA. This value is explicitly measured and guaranteed in the datasheet, making PLVA650A suitable for low-noise reference applications where conventional Zeners typically exceed 5–10 µV/√Hz.

What is the dynamic resistance (RZ) of PLVA650A and why does it matter?

The PLVA650A has a dynamic resistance of 700 Ω, measured at IZ = 250 µA. This parameter directly determines how much the output voltage shifts with load current changes - lower RZ yields better regulation. At 700 Ω, PLVA650A maintains tighter voltage control than standard Zeners (often >2 kΩ at µA currents), critical for stable bias in low-current analog stages.

Is PLVA650A automotive-qualified?

No, PLVA650A is not automotive-qualified. The datasheet explicitly states that the PLVA6xxA series was changed to non-automotive qualification in Revision 4 (January 2023). For automotive applications, Nexperia offers separate -Q qualified alternatives; PLVA650A is intended for industrial, consumer, and computing applications only.