Description

The ZRT050 is a monolithic integrated circuit providing a precise stable reference voltage of 4.9V at 500μA. The circuit features a knee current of 150μA and operation over a wide range of temperatures and currents. The ZRT050 is available in a SOT223 package for surface mount applications. This device offers a trim facility whereby the output voltage can be adjusted as shown in the schematic diagram. This facility is used when compensating for system errors or setting the reference output to a particular value. When the trim facility is not used, the pin should be left open circuit.

Feature(s)

Trimmable output

Excellent temperature stability

Low output noise figure

Available in two temperature ranges

1% initial voltage tolerance

No external stabilizing capacitor required in most cases

Low slope resistance

SOT223 small outline package

Specifications & Technical Documents

Product Parameters

Type	Shunt reference
Compliance (Only Automotive Supports PPAP)	Standard
AEC Qualified	No
ReferenceVoltage (V)	4.9 V
Tolerance (%)	1 %
Sink Current (mA)	60 mA
Minimum Cathode Current for Regulation Typ (µA)	150 µA
Typical Temperature Coefficient (ppm/°C)	2.5 ppm/°C
Maximum Slope Resistance (Ω)	2 Ω
Noise Voltage (µV/Hz)	50 µV/Hz

Technical Documents

ICP Reports

SOT223ICP.pdf (1.5 MB)

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products
PCN-2642	2023-09-05	2024-03-05	Device End of Life (EOL)

ZRT050