Taiwan Semiconductor Corporation TSZU52C2V0

Overview

TSZU52C2V0 from Taiwan Semiconductor is a surface-mount 2.0 V Zener diode in 0603 package, rated for 150 mW power dissipation, 5 mA test current, and 100 Ω dynamic impedance at 5 mA, used for precision voltage regulation in low-power analog and digital supply rails.

For engineers reviewing the TSZU52C2V0 datasheet, TSZU52C2V0 pinout, TSZU52C2V0 application, or TSZU52C2V0 equivalent, key selection criteria include zener voltage tolerance (±5% at 2.0 V), low leakage (100 µA @ 1.0 V), gold-plated solderable terminals, and operation across –55°C to +125°C junction temperature range.

Technical Context

This device operates as a single-die, unidirectional voltage reference with cathode-band polarity marking. It delivers stable 2.0 V regulation under 5 mA test current, with forward voltage of 0.9 V at 10 mA and surge capability up to 2 A (8.3 ms half-sine).

Zener impedance is specified at two test points: 100 Ω maximum at I_ZT = 5 mA and 600 Ω maximum at I_ZK = 5 mA, indicating controlled knee behavior. Leakage remains ≤100 µA at 1.0 V reverse bias, supporting low-current standby regulation.

Key Specifications

Pinout & Package

TSZU52C2V0 uses a 2-terminal 0603 surface-mount package with cathode indicated by a visible band on the anode end. Terminals are gold-plated and solderable per MIL-STD-750 Method 2026.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Compared with BZX584C2V0 and MMBZ5221BS, TSZU52C2V0 offers optimal balance of 0603 manufacturability, 100 µA leakage, and 100 Ω impedance-making it preferred for cost-sensitive, thermally moderate, and battery-conscious designs where standard pick-and-place compatibility is essential.

Availability

TSZU52C2V0 is available at Aetrix Electronics and suitable for USB-C PD monitoring, microcontroller reset circuits, industrial sensor conditioning, and wearable biometric front-end biasing requiring stable component supply across production volumes.

Supply support for TSZU52C2V0 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, protection components, and analog ICs since 1979.

The TSZU52C series belongs to TSC's precision Zener diode product line, engineered for high-volume, space-constrained applications demanding tight voltage tolerance, low leakage, and robust thermal performance in 0603 packaging.

FAQ

What is the exact zener voltage tolerance for TSZU52C2V0 at 5 mA test current?

The TSZU52C2V0 has a guaranteed zener voltage range of 1.90 V to 2.10 V at I_Z = 5 mA, representing a ±5% tolerance about the nominal 2.0 V rating. This specification is verified per Taiwan Semiconductor's G2009 datasheet revision and applies across the full operating temperature range of –55°C to +125°C. The TSZU52C2V0 maintains this tolerance without requiring external trimming or calibration.

Can TSZU52C2V0 be used in place of a 2.0 V reference IC in low-current applications?

Yes, TSZU52C2V0 can replace basic 2.0 V reference ICs in low-current (<10 mA), non-critical applications such as reset threshold setting or coarse biasing. Its 100 µA leakage at 1.0 V and 100 Ω dynamic impedance provide adequate stability for these roles. However, TSZU52C2V0 lacks the temperature drift compensation and initial accuracy of dedicated reference ICs, so it is not suitable for precision ADC references or metrology-grade circuits.

What is the maximum steady-state current TSZU52C2V0 can regulate continuously at room temperature?

At 25°C ambient, TSZU52C2V0 can regulate up to approximately 75 mA continuously (150 mW ÷ 2.0 V), assuming ideal heat sinking. In practice, due to 0603 thermal resistance (~300°C/W), sustained current above 20 mA requires careful PCB copper pour design. Derating begins at 25°C per Figure 7: power drops linearly to zero at 125°C junction temperature. The TSZU52C2V0 must be applied within its absolute maximum ratings to avoid parametric shift or failure.

Does TSZU52C2V0 meet automotive AEC-Q200 stress test requirements?

No, TSZU52C2V0 is not AEC-Q200 qualified. While it operates across –55°C to +125°C junction temperature and features gold-plated terminals, Taiwan Semiconductor does not list AEC-Q200 qualification for the TSZU52C series in its official documentation. For automotive applications requiring AEC-Q200 compliance, engineers should select TSC's AEC-Q200–qualified Zener families (e.g., TZM series) or verify qualification status directly with TSC prior to design-in. TSZU52C2V0 remains suitable for industrial and consumer use.

How is polarity identified on the TSZU52C2V0 0603 package?

Polarity on TSZU52C2V0 is indicated by a cathode band located at one end of the 0603 body - the banded end is the cathode terminal, and the opposite end is the anode. This marking is visible under 10× magnification and aligns with JEDEC standard orientation for 0603 discrete devices. During PCB layout, the cathode pad must connect to the higher-potential node (e.g., V_IN) when used as a shunt regulator. The TSZU52C2V0's polarity marking is consistent across all variants in the TSZU52C2V0–TSZU52C39 family.