Diodes Incorporated ZXRE4041EFTA

Overview

ZXRE4041EFTA from Diodes Incorporated is a precision micropower bandgap voltage reference delivering 1.225 V ±0.5% (C grade) with 20 ppm/°C typical temperature coefficient, 30 µA minimum operating current, and unconditional stability into capacitive loads - used in portable instrumentation, battery-powered A/D converters, and low-power precision power supplies.

For engineers reviewing the ZXRE4041EFTA datasheet, ZXRE4041EFTA pinout, ZXRE4041EFTA application, or ZXRE4041EFTA equivalent, key selection criteria include knee current (30 µA), reverse dynamic impedance (0.2–0.6 Ω), wideband noise (60 µV_rms), tolerance grade, and SOT23-3 compatibility with LM4041 footprints.

Technical Context

The ZXRE4041EFTA implements a two-terminal shunt topology with bandgap-derived reference voltage generation, optimized for operation across 30 µA to 12 mA load current. Its internal architecture ensures stable regulation without external compensation, even with >1 µF capacitive loading.

It functions as a programmable current sink where output voltage is defined by external resistor selection and device's fixed 1.225 V threshold. The device maintains specified TC and tolerance over −40°C to +125°C, supporting industrial-grade embedded sensing and data acquisition systems.

Key Specifications

Pinout & Package

SOT23-3 package (JEDEC TO-236AB), 2.80–3.04 mm × 2.10–2.64 mm × 1.12 mm max height, 0.95 mm lead pitch, green molding compound (Br/Sb-free).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar shunt voltage reference applications.

Compared with LM4041CIM3X-ADJ and MAX6008AEUR+T, the ZXRE4041EFTA offers optimal balance of ultra-low knee current, industry-standard 0.5% tolerance, and proven SOT23-3 reliability - making it preferred for cost-sensitive, space-constrained portable instrumentation where fixed 1.225 V is sufficient.

Availability

ZXRE4041EFTA is available at Aetrix Electronics and suitable for battery-powered instrumentation, precision ADC reference circuits, and portable communication devices requiring stable component supply with guaranteed long-term manufacturability.

Supply support for ZXRE4041EFTA 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, low-power, and space-efficient solutions for industrial, computing, and consumer markets.

The ZXRE4041 product line delivers precision shunt voltage references optimized for ultra-low-power, portable, and space-constrained applications - emphasizing micropower operation, tight tolerance, and robust capacitive-load stability.

FAQ

What is the maximum capacitive load the ZXRE4041EFTA can drive without oscillation?

The ZXRE4041EFTA is unconditionally stable with capacitive loads up to and exceeding 1 µF, as confirmed in the DS32169 datasheet Typical Characteristics section. No series resistance or isolation components are required, enabling direct connection to switching regulator output capacitors or ADC reference decoupling networks without risk of instability.

Can ZXRE4041EFTA replace LM4041CIM3X in an existing design?

Yes - ZXRE4041EFTA is pin-for-pin compatible with LM4041CIM3X in SOT23-3 packages and provides identical 1.225 V nominal output with matching 0.5% tolerance (C grade). Electrical behavior, knee current, and thermal performance align closely, allowing direct substitution without layout or schematic changes.

What is the minimum supply voltage needed to operate ZXRE4041EFTA at 100 µA load current?

The minimum supply voltage is 1.225 V plus the voltage drop across the external current-setting resistor. At 100 µA load, the device regulates when cathode-to-anode voltage reaches 1.225 V; thus, supply must exceed 1.225 V by at least the IR drop across the series resistor - e.g., 10 kΩ yields 1.0 V drop, requiring ≥2.225 V supply.

Is ZXRE4041EFTA compliant with RoHS and REACH requirements?

Yes - ZXRE4041EFTA uses green molding compound (Br/Sb-free) and meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full compliance documentation, including material declarations and test reports, is available through Diodes Incorporated's official product portal and Aetrix Electronics' quality assurance archive.