Renesas HZS24-2LTA-E

Overview

HZS24-2LTA-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog and stabilized power supply circuits, with a nominal zener voltage of 24.2 V (min 23.6 V, max 24.7 V), dynamic resistance of 120 Ω at 0.5 mA test current, and 400 mW power dissipation in the MHD package.

For engineers reviewing the HZS24-2LTA-E datasheet, HZS24-2LTA-E pinout, HZS24-2LTA-E application, or HZS24-2LTA-E equivalent, this device serves as a low-noise, low-leakage voltage reference for instrumentation, sensor signal conditioning, and high-stability DC-DC feedback loops where zener impedance and temperature coefficient directly impact output accuracy and long-term drift.

Technical Context

The HZS24-2LTA-E employs a silicon planar junction structure to achieve low noise-approximately 1/3–1/10 that of the legacy HZ series-and low leakage current (<1 μA at VR = 20 V). Its zener voltage temperature coefficient is −0.04 %/°C (≈ −9.7 mV/°C) near 24 V, enabling predictable thermal behavior in ambient ranges up to +125°C.

Designed for surface-mount compatibility with 5 mm-pitch high-speed automatic insertion, it operates within a junction temperature range of −55°C to +200°C and exhibits stable zener impedance across its rated current range (0.5–1 mA), supporting consistent regulation in low-power reference applications.

Key Specifications

Pinout & Package

The HZS24-2LTA-E is housed in the MHD package: a glass-encapsulated axial-leaded silicon planar diode with cathode band marking. Dimensions: φD = 2.0 mm (nom), L = 26.0 mm (min), E = 2.4 mm (max), mass ≈ 0.084 g. Suitable for wave soldering and 5 mm-pitch automated insertion.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C24LT1G and 1N5256B, the HZS24-2LTA-E offers optimal balance of low noise, axial MHD form factor, and 400 mW rating-making it preferred for industrial analog designs requiring proven thermal robustness and automated through-hole assembly.

Availability

HZS24-2LTA-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, precision analog reference, and stabilized power supply applications requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for HZS24-2LTA-E 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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for industrial, automotive, and infrastructure markets.

The HZS-L Series was developed by Renesas specifically for low-noise, high-stability voltage reference applications in instrumentation, sensor interfaces, and precision power supplies-emphasizing zener impedance control and thermal predictability.

FAQ

What is the exact zener voltage tolerance for HZS24-2LTA-E?

The HZS24-2LTA-E has a specified zener voltage range of 23.6 V minimum to 24.7 V maximum at I_Z = 0.5 mA, corresponding to a ±2.3% tolerance about the nominal 24.2 V value. This tolerance is guaranteed per the REJ03G0166-0300 datasheet Rev.3.00 and applies under DC test conditions at T_a = 25°C. The HZS24-2LTA-E maintains this specification across its qualified operating temperature range when properly derated.

Does HZS24-2LTA-E support automatic insertion on 5 mm pitch equipment?

Yes, the HZS24-2LTA-E is explicitly designed for 5 mm-pitch high-speed automatic insertion, as confirmed in the "Features" section of the official Renesas datasheet REJ03G0166-0300. Its MHD package (JEITA GRZZ0002ZC-A) has standardized lead spacing and mechanical dimensions compatible with industry-standard axial component feeders and placement heads. The HZS24-2LTA-E's 26 mm body length and 2.0 mm diameter further ensure reliable orientation and feeding.

What is the zener voltage temperature coefficient of HZS24-2LTA-E?

The HZS24-2LTA-E exhibits a zener voltage temperature coefficient (γ_Z) of −0.04 %/°C, equivalent to approximately −9.7 mV/°C at 24.2 V, as shown in Figure 2 of the REJ03G0166-0300 datasheet. This negative coefficient is characteristic of zeners above ~6 V and enables predictable, linear drift compensation in reference designs. The HZS24-2LTA-E's coefficient remains stable across its operating temperature range, supporting accurate thermal modeling in precision applications.

Can HZS24-2LTA-E be used in place of older HZ-series zeners?

Yes, the HZS24-2LTA-E is a direct functional upgrade to the legacy HZ-series zeners, offering approximately 1/3–1/10 lower noise and improved zener impedance uniformity. While pin-compatible in the MHD package, the HZS24-2LTA-E requires verification of thermal layout due to its tighter V_Z tolerance and distinct tempco. System-level validation of noise performance and regulation stability is recommended before full replacement, especially in audio or metrology-grade HZS24-2LTA-E deployments.

What is the maximum reverse leakage current for HZS24-2LTA-E?

The maximum reverse leakage current (I_R) for HZS24-2LTA-E is less than 1 μA when tested at V_R = 20 V and T_a = 25°C, as specified in the "Electrical Characteristics" table of the Renesas datasheet REJ03G0166-0300. This ultra-low leakage minimizes error current in high-impedance reference nodes and ensures negligible loading on bias networks-critical for maintaining accuracy in precision op-amp and ADC reference circuits using the HZS24-2LTA-E.