NXP Semiconductors PLVA2650A,215

Overview

PLVA2650A from Nexperia is a low-voltage avalanche regulator double diode with common anode in SOT23 package, designed for precision voltage stabilization at 5.0 V nominal (4.8–5.2 V at I_Z = 250 µA), featuring ultra-low dynamic impedance (700 Ω), low noise (1.0 µV/√Hz), and total power dissipation up to 180 mW (dual-diode mode). It serves in CMOS RAM backup circuits where stable low-current reference and minimal thermal drift are critical.

For engineers reviewing the PLVA2650A datasheet, PLVA2650A pinout, PLVA2650A application, or PLVA2650A equivalent, key selection criteria include its dual-cathode/common-anode topology, 700 Ω dynamic resistance at 250 µA, ±0.2 V line regulation over 100 µA–1 mA, -65 °C to +150 °C storage/junction temperature range, and SOT23 footprint compatibility with high-density PCB layouts.

Technical Context

The PLVA2650A implements two monolithically integrated Zener-type avalanche regulator diodes sharing a single anode terminal, enabling compact dual-reference generation without external interconnects. Its hard breakdown knee and low noise performance stem from optimized epitaxial doping profiles and low-capacitance junction design.

Operation relies on controlled avalanche multiplication at low currents (10 µA–250 µA), delivering stable regulation with minimal temperature coefficient (0.20 mV/K) and negligible reverse leakage (<20 µA at 90% V_Z). The device is rated for non-repetitive peak reverse power of 30 W (100 µs pulse), supporting transient suppression in low-energy circuits.

Key Specifications

Pinout & Package

PLVA2650A is housed in a standard SOT23 (TO-236AB) plastic surface-mount package measuring 2.9 × 1.3 × 1.0 mm, with gull-wing leads and FR4-compatible thermal characteristics (R_{th j-a} = 500 K/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C5V1 and PLVA2653A, PLVA2650A uniquely delivers 5.0 V regulation with lowest noise (1.0 µV/√Hz) and lowest tempco (0.20 mV/K) in a dual-cathode configuration-making it optimal for battery-backed memory and low-drift sensor biasing where both voltage accuracy and thermal stability are critical.

Availability

PLVA2650A is available at Aetrix Electronics and suitable for CMOS RAM backup circuits, smoke detector relay control, voltage stabilizers, and low-noise sensor biasing requiring stable component supply across automotive, industrial, and consumer electronics programs.

Supply support for PLVA2650A 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 leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products business, with focus on automotive, industrial, computing, and consumer markets.

The PLVA2600A series belongs to Nexperia's low-voltage avalanche regulator diode product line, engineered specifically for high-precision, low-power voltage reference and limiting in space-constrained, battery-operated systems.

FAQ

What is the maximum continuous power dissipation for PLVA2650A in dual-diode operation?

The PLVA2650A has a maximum total power dissipation of 180 mW when both diodes are simultaneously loaded, measured at ambient temperature of 25 °C on FR4 PCB. This value drops with rising ambient temperature per the specified thermal resistance of 500 K/W, and must not exceed the 150 °C junction temperature limit under any operating condition.

Can PLVA2650A be used as a standalone 5.0 V reference without external current limiting?

No - PLVA2650A requires an external series resistor to set the operating current within 10 µA–250 µA for stable regulation. At I_Z = 250 µA, V_Z is 5.00 V with ±0.2 V tolerance; operation outside this range shifts voltage and increases dynamic impedance or noise.

How does the common-anode configuration affect PCB layout compared to discrete Zeners?

The common-anode configuration reduces net component count by one and eliminates the need for separate anode traces, minimizing loop area and parasitic inductance. It allows symmetric placement of cathodes relative to a shared ground plane, improving noise immunity and thermal coupling between the two regulated outputs.

Is PLVA2650A qualified for automotive applications per AEC-Q101?

No - PLVA2650A is not AEC-Q101 qualified. It is specified for industrial and consumer use with operating junction temperature up to 150 °C, but lacks the stress testing, failure analysis, and documentation required for automotive-grade qualification. For automotive designs, consult Nexperia's AEC-Q101-qualified Zener portfolio such as PZUxxB series.