Taiwan Semiconductor Corporation TSZU52C15

Overview

TSZU52C15 from Taiwan Semiconductor is a surface-mount 15V Zener diode in a 0603 package, rated for 150mW power dissipation, with zener voltage tolerance of ±5% (14.25V to 15.75V at 5mA test current), dynamic impedance of 30Ω max at 5mA, and leakage current ≤0.1µA at 11V reverse bias - used for precision voltage regulation in compact DC-DC feedback networks.

For engineers reviewing the TSZU52C15 datasheet, TSZU52C15 pinout, TSZU52C15 application, or TSZU52C15 equivalent, key selection factors include its 0603 footprint compatibility, low-leakage performance at 11V VR, 30Ω zener impedance at IZT=5mA, thermal stability up to +125°C junction temperature, and RoHS/halogen-free compliance for consumer and industrial PCB designs.

Technical Context

This device operates as a single-die, cathode-banded Zener diode optimized for stable voltage reference and overvoltage clamping in space-constrained layouts. Its gold-plated terminals meet MIL-STD-750 Method 2026 solderability requirements, and polarity is marked by a visible cathode band on the 0603 ceramic body.

The TSZU52C15 exhibits a typical temperature coefficient near zero in the 15V range, with junction temperature operating from –55°C to +125°C and storage range matching. It supports surge forward current up to 2A (8.3ms half-sine) without degradation, enabling robust transient handling in regulator and protection circuits.

Key Specifications

Pinout & Package

TSZU52C15 uses a two-terminal, unidirectional Zener configuration in an ultra-thin, leadless 0603 ceramic package. Polarity is indicated by a cathode band on the component body; the anode and cathode terminals are co-planar and gold-plated for reliable solder wetting.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584C15 and MMBZ5245BS, the TSZU52C15 offers optimal balance of 0603 footprint compatibility, 30Ω zener impedance, and sub-0.1µA leakage at 11V - making it ideal for space-constrained, low-quiescent-current regulation tasks where board real estate and standby power are primary constraints.

Availability

TSZU52C15 is available at Aetrix Electronics and suitable for USB power delivery clamping, DC-DC feedback referencing, and low-power sensor biasing requiring stable component supply across high-mix production runs.

Supply support for TSZU52C15 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.

The TSZU52C series was designed specifically for high-reliability, low-profile voltage regulation in miniaturized surface-mount applications - emphasizing tight V_Z tolerance, low leakage, and consistent solderability in automated assembly lines.

FAQ

What is the zener voltage tolerance of TSZU52C15?

The TSZU52C15 has a zener voltage range of 14.25V to 15.75V at 5mA test current, corresponding to a ±5% tolerance. This specification is guaranteed per the manufacturer's electrical characteristics table and applies under standard test conditions (T_A = 25°C). The TSZU52C15 maintains this tolerance across its qualified operating temperature range, supporting stable reference performance in feedback and clamping circuits.

Does TSZU52C15 support reflow soldering per JEDEC J-STD-020?

Yes, the TSZU52C15 is qualified for standard lead-free reflow soldering per JEDEC J-STD-020. Its gold-plated terminals meet MIL-STD-750 Method 2026 solderability requirements, and the 0603 ceramic package withstands peak temperatures up to 260°C for 10–30 seconds. The TSZU52C15 is supplied on 7-inch reels with 4,000 units per reel, optimized for high-throughput SMT placement.

What is the maximum leakage current for TSZU52C15 and at what voltage is it specified?

The maximum leakage current for TSZU52C15 is 0.1 µA, specified at a reverse voltage (V_R) of 11V. This value is measured at T_A = 25°C and reflects the device's ability to maintain low standby power in battery-sensitive applications. The TSZU52C15 achieves this performance through controlled doping and passivation, distinguishing it from higher-leakage alternatives like MMBZ5245BS (1.0 µA @ 12V).

Can TSZU52C15 be used in automotive under-hood applications?

The TSZU52C15 supports junction temperatures from –55°C to +125°C and is rated for operation in industrial and extended-temperature environments. While not AEC-Q200 qualified, its thermal and surge specifications - including 2A peak forward surge current and stable V_Z drift - make it suitable for non-safety-critical under-hood functions such as sensor biasing or auxiliary rail clamping, provided system-level qualification is performed. TSZU52C15 is not intended for airbag or ADAS subsystems.

Is there a halogen-free declaration for TSZU52C15?

Yes, TSZU52C15 complies with IEC 61249-2-21 for halogen-free materials and is RoHS compliant. This is confirmed in the official Taiwan Semiconductor documentation (Version G2009), which states halogen-free status explicitly under "Features." The TSZU52C15 contains no brominated flame retardants (BFRs), chlorinated flame retardants (CFRs), or antimony trioxide, meeting global environmental compliance requirements for commercial and industrial end equipment.