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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Renesas HZ24-1JTA-E

Name: HZ24-1JTA-E
Brand: Renesas
SKU: HZ24-1JTA-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HZ24-1JTA-E

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: -

Datasheet:: HZ24-1JTA-E.pdf

Description:: DIODE ZENER

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Inventory:5,000

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Product details

Overview

HZ24-1JTA-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 22.9–24.0 V at 0.5 mA, dynamic resistance of 22.0 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in stabilized power supplies and reference voltage generators.

For engineers reviewing the HZ24-1JTA-E datasheet, HZ24-1JTA-E pinout, HZ24-1JTA-E application, or HZ24-1JTA-E equivalent, key selection criteria include zener voltage tolerance (±2.3 V), low noise performance (1/3–1/10 of standard HZ series), DO-35 package compatibility, and thermal stability across −55°C to +175°C storage range.

Technical Context

This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction, with zener voltage specified under DC test conditions at I_Z = 0.5 mA. Its low dynamic impedance (22.0 Ω) and tight V_Z tolerance support stable regulation in low-current bias networks.

The HZ24-1JTA-E exhibits a negative temperature coefficient (−0.04 %/°C typical per Fig.2 at ~24 V), enabling predictable drift compensation in temperature-sensitive references. It is rated for continuous operation up to T_j = 175°C and derates linearly above 25°C ambient per Fig.3.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	22.9–24.0 V at I_Z = 0.5 mA - defines precise regulation point for low-power reference designs
Dynamic Resistance (r_d)	22.0 Ω max at I_Z = 0.5 mA - ensures minimal output voltage variation under load transients
Power Dissipation (P_d)	400 mW max at T_a = 25°C - supports compact PCB layout without forced cooling
Junction Temperature (T_j)	175°C max - enables reliable operation in high-temperature industrial environments
Reverse Leakage (I_R)	1 μA max at V_R = 20.2 V - minimizes quiescent current in battery-powered references
Package	DO-35 (JEITA GRZZ0002ZB-A) - industry-standard axial leaded package compatible with manual and wave soldering

Pinout & Package

Package: DO-35 glass axial-leaded package with orange body color and navy-blue cathode band; total mass 0.13 g; dimensions per JEITA SC-40 outline (L = 26.0 mm, φD = 2.0 mm, E = 4.2 mm).

Pin/Terminal	Circuit Role	Design Meaning
1 (Cathode)	Zener voltage reference terminal	Connected to regulated positive rail; polarity must be observed to avoid forward conduction
2 (Anode)	Reference ground return	Typically tied to system ground or bias network common; forms complete regulation loop with cathode

Key Features

Feature	Design Value
Low-noise Zener operation	Noise level ≈ 1/3–1/10 that of standard HZ series - critical for audio preamps and sensor signal conditioning
Stable voltage regulation	V_Z tolerance ±2.3 V (22.9–24.0 V) at 0.5 mA - enables accurate 24 V rail referencing without trimming
Low dynamic impedance	r_d = 22.0 Ω max - maintains regulation accuracy under varying load currents up to 1 mA
High thermal endurance	T_j = 175°C and T_stg = −55 to +175°C - suitable for automotive under-hood and industrial control modules

Applications

Industrial Power Monitoring	Medical Sensor Reference
Use Scenario: Precision voltage monitoring in PLC analog input modules measuring 0–24 V field signals. IC Role / Device Role / Timing Role: Zener diode providing stable 24 V reference for ADC bias and scaling networks. Use Value: Low dynamic resistance (22.0 Ω) and tight V_Z tolerance ensure <±0.1% full-scale error over temperature.	Use Scenario: Low-drift excitation source for bridge-based pressure transducers in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise 24 V reference generator for Wheatstone bridge biasing. Use Value: Noise reduction (vs. standard HZ) improves SNR by >10 dB in microvolt-level sensor outputs.
Test Equipment Calibration	Telecom Line Interface
Use Scenario: Fixed-voltage reference in handheld multimeter front-end attenuator and range-switching circuitry. IC Role / Device Role / Timing Role: Zener diode establishing calibrated 24 V reference for internal DAC and comparator thresholds. Use Value: Stable T_j = 175°C rating allows uninterrupted calibration during extended bench operation.	Use Scenario: Overvoltage protection and bias stabilization in DSL line driver/receiver interface stages. IC Role / Device Role / Timing Role: Zener clamp regulating local 24 V bias rail against surge-induced transients. Use Value: 400 mW power rating and low leakage (<1 μA) prevent false triggering while maintaining standby efficiency.

Industrial Power Monitoring

Medical Sensor Reference

Use Scenario: Precision voltage monitoring in PLC analog input modules measuring 0–24 V field signals.

IC Role / Device Role / Timing Role: Zener diode providing stable 24 V reference for ADC bias and scaling networks.

Use Value: Low dynamic resistance (22.0 Ω) and tight V_Z tolerance ensure <±0.1% full-scale error over temperature.

Use Scenario: Low-drift excitation source for bridge-based pressure transducers in portable diagnostic devices.

IC Role / Device Role / Timing Role: Low-noise 24 V reference generator for Wheatstone bridge biasing.

Use Value: Noise reduction (vs. standard HZ) improves SNR by >10 dB in microvolt-level sensor outputs.

Test Equipment Calibration

Telecom Line Interface

Use Scenario: Fixed-voltage reference in handheld multimeter front-end attenuator and range-switching circuitry.

IC Role / Device Role / Timing Role: Zener diode establishing calibrated 24 V reference for internal DAC and comparator thresholds.

Use Value: Stable T_j = 175°C rating allows uninterrupted calibration during extended bench operation.

Use Scenario: Overvoltage protection and bias stabilization in DSL line driver/receiver interface stages.

IC Role / Device Role / Timing Role: Zener clamp regulating local 24 V bias rail against surge-induced transients.

Use Value: 400 mW power rating and low leakage (<1 μA) prevent false triggering while maintaining standby efficiency.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4748A	Zener voltage 22 V (±5%), r_d = 23 Ω, P_d = 1 W, DO-41 package	Higher power but looser V_Z tolerance and higher noise than HZ24-1JTA-E	Select when higher power handling is required and tighter noise specs are not critical
BZX55C24	Zener voltage 24 V (±5%), r_d = 35 Ω, P_d = 500 mW, DO-35 package	Same package but higher dynamic resistance and unverified low-noise performance	Select for cost-sensitive applications where noise is secondary to footprint compatibility

Compared with 1N4748A and BZX55C24, the HZ24-1JTA-E delivers superior noise performance and tighter V_Z tolerance in the same DO-35 form factor, making it preferred for precision analog references where signal integrity outweighs raw power capacity.

Availability

HZ24-1JTA-E is available at Aetrix Electronics and suitable for industrial power monitoring, medical sensor reference, test equipment calibration, and telecom line interface applications requiring stable component supply and long-term obsolescence management.

Supply support for HZ24-1JTA-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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT systems.

The HZ-L Series Zener diodes were designed specifically for low-noise, high-stability voltage reference applications in precision analog signal chains and regulated power supplies.

FAQ

What is the zener voltage range of the HZ24-1JTA-E?

The HZ24-1JTA-E has a zener voltage range of 22.9 V to 24.0 V, measured at a test current of 0.5 mA and ambient temperature of 25°C. This specification is confirmed in the Renesas datasheet REJ03G0182-0300 Rev.3.00, Page 3, under Electrical Characteristics for part number HZ24-1L (HZ24-1JTA-E is the commercial-grade variant within the HZ24-1L family). The tolerance reflects process-controlled diffusion for stable regulation.

Is the HZ24-1JTA-E suitable for low-noise applications?

Yes, the HZ24-1JTA-E is explicitly engineered for low-noise operation, with noise levels approximately 1/3 to 1/10 that of the legacy HZ series. This is achieved through optimized silicon planar junction design and low-leakage processing. The Renesas datasheet highlights this feature on Page 1 under "Features", confirming its suitability for precision analog circuits such as sensor interfaces and audio preamplifiers where voltage reference noise directly impacts system SNR.

What package type does the HZ24-1JTA-E use?

The HZ24-1JTA-E uses the DO-35 glass axial-leaded package, identified by JEITA code GRZZ0002ZB-A and Renesas package name SC-40. Dimensions are L = 26.0 mm, body diameter φD = 2.0 mm, and lead spacing E = 4.2 mm. The orange body with navy-blue cathode band provides visual polarity identification. This package is compatible with standard through-hole assembly and meets IPC-A-610 Class 2 requirements.

What is the maximum power dissipation rating for the HZ24-1JTA-E?

The HZ24-1JTA-E has a maximum power dissipation (P_d) of 400 mW at an ambient temperature of 25°C, as specified in the Absolute Maximum Ratings table on Page 2 of the Renesas datasheet REJ03G0182-0300. Derating is linear above 25°C, reaching zero dissipation at approximately 175°C ambient - consistent with its 175°C maximum junction temperature rating.

Does the HZ24-1JTA-E have a specified temperature coefficient?

Yes, the HZ24-1JTA-E exhibits a negative temperature coefficient, with typical values around −0.04 %/°C near 24 V, as shown in Figure 2 ("Temperature Coefficient vs. Zener voltage") on Page 4 of the Renesas datasheet. This behavior is inherent to avalanche-mode Zener operation in this voltage range and enables predictable drift modeling in temperature-compensated reference designs.

HZ24-1JTA-E Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

Voltage - Zener (Nom) (Vz):: -

Tolerance:: -

Power - Max:: -

Impedance (Max) (Zzt):: -

Current - Reverse Leakage @ Vr:: -

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

HZ24-1JTA-E FAQ

1.How can I place an order for HZ24-1JTA-E through Aetrix?

Please submit a Request for Quotation (RFQ) for HZ24-1JTA-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for HZ24-1JTA-E reliable?

The price and inventory of HZ24-1JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ24-1JTA-E is usually 5 days.

3.What payment methods are accepted for HZ24-1JTA-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ24-1JTA-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HZ24-1JTA-E?

HZ24-1JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HZ24-1JTA-E order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for HZ24-1JTA-E?

For technical support, including HZ24-1JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ24-1JTA-E requirements.

6.How does Aetrix verify that HZ24-1JTA-E is sourced from the original manufacturer or authorized distributors?

All HZ24-1JTA-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HZ24-1JTA-E meets industry standards.

7.What is the process for return or replacement of HZ24-1JTA-E?

All HZ24-1JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ24-1JTA-E, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The HZ24-1JTA-E part is unused and in its original packaging.

Return procedure for HZ24-1JTA-E:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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