Diodes Incorporated ZR404005F25TC

Overview

ZR404005F25TC from Diodes Incorporated is a precision micropower 2.5 V bandgap voltage reference in SOT-23 package, delivering 0.5% initial tolerance, 30 ppm/°C typical temperature coefficient, and 0.4 Ω typical slope resistance. It operates stably from 60 µA to 15 mA without external capacitors and supports transient response under 10 µs-ideal for battery-powered instrumentation and portable data acquisition systems.

For engineers reviewing the ZR404005F25TC datasheet, ZR404005F25TC pinout, ZR404005F25TC application, or ZR404005F25TC equivalent, key selection criteria include initial accuracy, load regulation stability, TC performance over −40°C to +85°C, and low-quiescent-current operation in space-constrained SOT-23 layouts.

Technical Context

The ZR404005F25TC implements a two-terminal shunt topology with internal bandgap core, enabling stable 2.5 V reference output across reverse current from 60 µA to 15 mA. Its design eliminates need for external stabilization capacitance while maintaining <10 µs transient recovery time and <0.8 Ω dynamic impedance at 1 mA/100 Hz.

Temperature compensation is achieved via curvature-corrected bandgap architecture, yielding 30 ppm/°C typical TC over −40°C to +85°C. Slope resistance remains tightly controlled (0.4 Ω typ.) due to optimized process and layout, ensuring minimal output voltage shift under varying load currents.

Key Specifications

Pinout & Package

SOT-23 package (suffix F), 3-pin surface-mount device with pin 1 floating or internally connected to pin 2 per Diodes Inc. package drawing 4-176. Pin 3 is cathode (output), pin 2 is anode (ground).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV431AIDBVR and REF43 2.5, the ZR404005F25TC delivers optimal balance of 0.5% accuracy, ultra-low quiescent current, and capacitor-free operation-making it the preferred choice for cost-sensitive, space-constrained, battery-operated instrumentation where sub-1% total error is acceptable.

Availability

ZR404005F25TC is available at Aetrix Electronics and suitable for battery-powered portable meters, precision data acquisition systems, and industrial process instrumentation requiring stable component supply with consistent parametric performance across production lots.

Supply support for ZR404005F25TC 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 semiconductor company specializing in discrete, analog, and mixed-signal devices for power management, signal integrity, and protection applications.

The ZR4040 series belongs to Diodes' precision voltage reference product line, engineered specifically for low-power, high-stability shunt references in portable and industrial measurement systems.

FAQ

Is ZR404005F25TC compatible with ceramic output capacitors?

Yes - the ZR404005F25TC is explicitly designed to remain stable with capacitive loads, including ceramic capacitors up to 10 nF. No series resistance or external compensation is required, unlike many older shunt references that oscillate with low-ESR ceramics.

What is the maximum safe reverse current for continuous operation?

The absolute maximum rated reverse current is 25 mA, but the recommended operating range is 60 µA to 15 mA. Operation up to 25 mA is permissible for short durations (e.g., transient surges), provided power dissipation stays within the SOT-23 limit of 330 mW at 25°C ambient.

Can ZR404005F25TC replace ZR40401F25 in an existing design?

Yes - both share identical SOT-23 package, pinout, and electrical behavior except for initial tolerance (0.5% vs. 1%). No layout or schematic changes are needed; the tighter tolerance improves system-level accuracy without affecting stability or power consumption.

Does ZR404005F25TC require a heatsink in standard PCB layouts?

No - at 15 mA and 2.5 V, power dissipation is 37.5 mW, well below the SOT-23's 330 mW rating at 25°C. With standard 1 oz copper and 2 cm² thermal pad, junction temperature rise remains under 10°C, eliminating need for heatsinking in typical industrial or portable applications.