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Renesas HZS24-1LTA-E
- Part No.:
- HZS24-1LTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS24-1LTA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZS24-1LTA-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 22.9–24.0 V, maximum power dissipation of 400 mW, dynamic resistance of 22.0 Ω at 0.5 mA, and junction temperature rating up to 200°C.
For engineers reviewing the HZS24-1LTA-E datasheet, HZS24-1LTA-E pinout, HZS24-1LTA-E application, or HZS24-1LTA-E equivalent, this device is selected for noise-sensitive reference designs requiring stable zener voltage under low-current biasing, tight thermal stability, and compatibility with 5 mm-pitch automated insertion.
Technical Context
The HZS24-1LTA-E employs a silicon planar junction structure to achieve low noise-approximately 1/3 to 1/10 that of the legacy HZ series-with low leakage current (≤1 μA at VR = 20.0 V) and low zener impedance. Its design targets DC-stabilized references where spectral purity and long-term voltage stability are critical.
It operates within an ambient temperature range of −55°C to +175°C and maintains specified zener voltage across 0.5–1 mA test current, with temperature coefficient data indicating moderate positive drift (~+0.06 mV/°C near 24 V), consistent with mid-voltage Zener devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.9–24.0 V at IZ = 0.5 mA - defines stable regulation point for low-power reference circuits |
| Dynamic Resistance (rd) | 22.0 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under small load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB layouts with limited heatsinking |
| Junction Temperature (Tj) | 200°C max - enables reliable operation in high-temperature industrial environments |
| Reverse Leakage (IR) | ≤1 μA at VR = 20.0 V - minimizes parasitic current draw in battery-backed or ultra-low-power systems |
| Package | MHD (JEITA GRZZ0002ZC-A) - 2-pin axial leaded package with 5 mm pitch, compatible with high-speed automatic insertion |
Pinout & Package
Package: MHD (axial leaded, JEITA GRZZ0002ZC-A), 2.0 mm diameter body, 26.0 mm length, cathode band marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal during zener operation |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower potential; completes bias path for zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ~1/3–1/10 that of HZ series - directly improves SNR in precision voltage references |
| Stable low-current regulation | Specified VZ and rd at IZ = 0.5 mA - enables use in micro-power bias networks without external amplification |
| High thermal robustness | Tj = 200°C and Tstg = −55 to +175°C - supports deployment in automotive engine control units and industrial motor drives |
| Automated assembly compatibility | 5 mm pitch axial leads and MHD package - eliminates manual placement in high-volume manufacturing |
Applications
| Industrial Power Monitoring | Test & Measurement Reference |
|---|---|
|
Use Scenario: Monitoring DC bus voltage in programmable logic controller (PLC) backplanes with ±0.5% accuracy over temperature. IC Role / Device Role / Timing Role: Zener diode providing stable 24 V reference for ADC input scaling and comparator threshold setting. Use Value: Low dynamic resistance (22.0 Ω) and low noise ensure measurement repeatability across 0–70°C operating range. |
Use Scenario: Calibration reference in handheld multimeters requiring <10 ppm/°C drift and sub-μV RMS noise floor. IC Role / Device Role / Timing Role: Primary voltage reference element in dual-slope integrator front-end, biased at 0.5 mA. Use Value: Verified low-noise performance (1/3–1/10 vs. HZ series) directly reduces quantization uncertainty in 5½-digit measurements. |
| Medical Diagnostic Sensor Bias | Telecom Line Card Protection |
|
Use Scenario: Biasing photodiode transimpedance amplifiers in portable ultrasound probe front-ends. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) zener reference establishing virtual ground for analog signal chain. Use Value: Minimal reverse current prevents signal offset drift in high-gain, low-frequency (<1 kHz) sensor paths. |
Use Scenario: Overvoltage clamping on -48 V telecom power rails in base station line cards. IC Role / Device Role / Timing Role: Standby shunt regulator absorbing transient surges while maintaining rail integrity. Use Value: 400 mW power rating and 200°C junction temperature allow sustained clamping during repeated lightning-induced spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4748A (ON Semiconductor) | Zener voltage 22.0–24.2 V; rd = 23 Ω at 19 mA; higher test current shifts operating point | Designed for higher-current regulation (19 mA); less suitable for micro-power bias networks | Select HZS24-1LTA-E when low-current (0.5 mA) stability, low noise, and automated insertion are required. |
| BZX85C24 (Vishay) | Zener voltage 22.8–25.2 V; rd = 30 Ω at 5 mA; wider tolerance and higher impedance | General-purpose grade; not characterized for low-noise or high-temperature operation | Choose HZS24-1LTA-E for applications demanding tighter VZ tolerance, lower rd, and verified 200°C Tj. |
Compared with 1N4748A and BZX85C24, the HZS24-1LTA-E delivers superior low-noise performance, tighter low-current regulation, and extended thermal capability-making it optimal for precision industrial and test equipment where reference integrity is non-negotiable.
Availability
HZS24-1LTA-E is available at Aetrix Electronics and suitable for industrial power monitoring, test & measurement instrumentation, medical diagnostic sensors, and telecom line card protection requiring stable component supply and long-lifecycle support.
Supply support for HZS24-1LTA-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 specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZS-L Series was developed by Renesas specifically for low-noise, high-stability Zener reference applications in precision analog systems-emphasizing reduced voltage noise, tight dynamic impedance, and robust thermal performance.
FAQ
What is the zener voltage tolerance of HZS24-1LTA-E?
The HZS24-1LTA-E has a zener voltage range of 22.9 V to 24.0 V at IZ = 0.5 mA, corresponding to a ±2.3% tolerance about the nominal 23.45 V midpoint. This specification is guaranteed per the Renesas REJ03G0166-0300 datasheet and applies under DC test conditions at Ta = 25°C. The HZS24-1LTA-E maintains this tolerance across its qualified operating temperature range when used within rated power limits.
Does HZS24-1LTA-E support automated PCB assembly?
Yes, the HZS24-1LTA-E uses the MHD package (JEITA GRZZ0002ZC-A) with 5 mm lead pitch and axial lead configuration, explicitly designed for high-speed automatic insertion equipment. Its standardized dimensions-including 2.0 mm body diameter and 26.0 mm length-are compatible with industry-standard feeders and placement nozzles. The HZS24-1LTA-E's mechanical consistency ensures reliable pick-and-place yield in volume manufacturing.
How does the noise performance of HZS24-1LTA-E compare to standard Zener diodes?
The HZS24-1LTA-E exhibits approximately 1/3 to 1/10 the voltage noise of the legacy HZ series Zener diodes, as confirmed in Renesas' characterization data. This reduction stems from its silicon planar construction and process optimization for low 1/f noise. In practice, this means the HZS24-1LTA-E contributes significantly less broadband and flicker noise to precision reference nodes-critical in high-resolution ADCs and low-drift op-amp biasing circuits.
What is the maximum allowable power dissipation for HZS24-1LTA-E at 70°C ambient?
Per the derating curve in Figure 3 of the REJ03G0166-0300 datasheet, the HZS24-1LTA-E's maximum power dissipation decreases linearly from 400 mW at 25°C to approximately 280 mW at 70°C ambient temperature. This assumes mounting on a standard 100 × 180 × 1.6 mm paper-phenol PCB. Exceeding this limit risks exceeding the 200°C junction temperature rating and accelerated parametric drift. Always verify thermal margin using actual board layout and airflow in the HZS24-1LTA-E application.
Is HZS24-1LTA-E suitable for automotive under-hood applications?
The HZS24-1LTA-E is rated for junction temperatures up to 200°C and storage from −55°C to +175°C, meeting thermal requirements for many under-hood locations. However, Renesas classifies the HZS-L Series as "Standard" quality grade-intended for computers, office equipment, and industrial robots-not automotive transportation systems unless explicitly qualified per AEC-Q101. For automotive-critical functions, consult Renesas' automotive-grade Zener portfolio before deploying HZS24-1LTA-E.
HZS24-1LTA-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:
- -
HZS24-1LTA-E FAQ
1.How can I place an order for HZS24-1LTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS24-1LTA-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 HZS24-1LTA-E reliable?
The price and inventory of HZS24-1LTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS24-1LTA-E is usually 5 days.
3.What payment methods are accepted for HZS24-1LTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS24-1LTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS24-1LTA-E?
HZS24-1LTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS24-1LTA-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 HZS24-1LTA-E?
For technical support, including HZS24-1LTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS24-1LTA-E requirements.
6.How does Aetrix verify that HZS24-1LTA-E is sourced from the original manufacturer or authorized distributors?
All HZS24-1LTA-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 HZS24-1LTA-E meets industry standards.
7.What is the process for return or replacement of HZS24-1LTA-E?
All HZS24-1LTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS24-1LTA-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 HZS24-1LTA-E part is unused and in its original packaging.
Return procedure for HZS24-1LTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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