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Renesas HZ24-1LTD-E
- Part No.:
- HZ24-1LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ24-1LTD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:25,000
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Product details
Overview
HZ24-1LTD-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, with a nominal zener voltage of 22.9–24.0 V, 400 mW power dissipation, and dynamic resistance of 120 Ω at 0.5 mA test current. It is used in regulated power supplies, sensor excitation circuits, and instrumentation front-ends requiring stable bias under low-current conditions.
For engineers reviewing the HZ24-1LTD-E datasheet, HZ24-1LTD-E pinout, HZ24-1LTD-E application, or HZ24-1LTD-E equivalent, this device serves as a low-noise, low-leakage voltage reference where thermal stability (−0.04 %/°C typical), tight zener voltage tolerance, and DO-35 package compatibility are critical selection criteria.
Technical Context
This Zener diode operates in reverse breakdown mode with DC-tested characteristics, delivering stable regulation across ambient temperatures up to 175°C junction temperature. Its low noise level-approximately 1/3–1/10 that of the legacy HZ series-stems from optimized silicon planar construction and process control.
The device exhibits a negative temperature coefficient of −0.04 %/°C near 24 V, enabling predictable drift compensation in multi-device references. Its 120 Ω dynamic impedance at 0.5 mA supports stable regulation in high-impedance bias networks without significant loading error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.9–24.0 V at IZ = 0.5 mA - defines precise regulation point for low-current reference design |
| Dynamic Resistance (rd) | 120 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under small current fluctuations |
| Power Dissipation (Pd) | 400 mW - enables operation in compact DO-35 packages without forced cooling in ambient ≤75°C |
| Reverse Leakage (IR) | 1 μA max at VR = 18.0 V - minimizes parasitic current draw in high-impedance sensing/reference nodes |
| Temperature Coefficient (γZ) | −0.04 %/°C typical - allows predictable thermal drift modeling in compensated reference designs |
| Junction Temperature (Tj) | 175°C maximum - supports reliable operation in industrial environments with elevated board temperatures |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body and navy-blue cathode band. Dimensions: φD = 2.0 mm, L = 26.0 mm, mass ≈ 0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Breakdown voltage reference terminal | Connected to higher-potential node; reverse-biased operation requires positive voltage applied here relative to anode |
| 2 (Anode) | Reference ground/reference return | Typically tied to circuit common; establishes reference potential for zener-regulated output |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise ~1/3–1/10 that of standard HZ series - critical for audio preamps and precision ADC references |
| Low leakage current | ≤1 μA at 18 V reverse bias - preserves accuracy in high-impedance feedback or bias networks |
| Tight zener voltage tolerance | ±0.55 V (22.9–24.0 V) at 0.5 mA - reduces need for post-calibration in factory-set references |
| Stable temperature coefficient | −0.04 %/°C near 24 V - enables predictable drift behavior for two-point thermal compensation |
| Robust power handling | 400 mW rating in DO-35 - supports transient overloads and sustained operation without derating below 75°C ambient |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Precision Reference Supply |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive bridge sensors (e.g., load cells, pressure transducers) in factory automation systems. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed bias point for Wheatstone bridge operation. Use Value: Low dynamic resistance (120 Ω) and low noise ensure minimal signal-to-noise degradation in µV-level bridge outputs. |
Use Scenario: Generating a clean 24 V reference for 16-bit SAR ADCs in portable data loggers powered by Li-ion batteries. IC Role / Device Role / Timing Role: Primary voltage reference source for analog front-end calibration and offset correction. Use Value: 1 μA max leakage prevents battery drain during sleep mode while maintaining regulation accuracy. |
| Medical Instrumentation Biasing | Test & Measurement Equipment Calibration |
Use Scenario: Supplying stable bias to photodiode transimpedance amplifiers in optical pulse oximeters. IC Role / Device Role / Timing Role: Low-noise voltage reference for TIA feedback network to minimize dark-current-induced offset drift. Use Value: Ultra-low noise performance suppresses baseline wander in DC-coupled physiological signal paths. |
Use Scenario: Serving as traceable reference element in handheld multimeter internal voltage standards. IC Role / Device Role / Timing Role: Primary zener-based reference in self-calibrating voltage measurement subsystems. Use Value: Tight 22.9–24.0 V tolerance and −0.04 %/°C TC enable ±0.1% accuracy over 0–50°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5248BLT1G | Zener voltage 22 V (21.0–23.0 V), 350 mW, rd = 27 Ω @ 20 mA - lower impedance but higher test current and wider tolerance | Optimized for higher-current shunt regulation; less suitable for µA-level bias networks due to higher leakage (≤5 μA) | Select when higher current drive and tighter rd are needed, and thermal drift compensation is handled externally |
| Vishay BZX55-C24 | Zener voltage 24 V (22.8–25.2 V), 500 mW, rd = 80 Ω @ 5 mA - broader voltage spread and higher test current | Designed for general-purpose regulation; lacks documented low-noise optimization and has higher typical noise floor | Prefer for cost-sensitive industrial supplies where noise is non-critical and PCB layout accommodates higher power dissipation |
Compared with MMBZ5248BLT1G and BZX55-C24, the HZ24-1LTD-E delivers superior low-noise performance and tighter low-current regulation at 0.5 mA, making it uniquely suited for precision analog signal chains where noise and leakage directly impact measurement resolution.
Availability
HZ24-1LTD-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, portable medical instrumentation, test equipment calibration, and low-power precision reference supply applications requiring stable component supply and long-term sourcing continuity.
Supply support for HZ24-1LTD-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 HZ-L Series Zener diodes were developed specifically for low-noise, high-stability voltage reference applications in precision analog systems-emphasizing reduced noise, tight voltage tolerance, and predictable thermal behavior over broad temperature ranges.
FAQ
What is the zener voltage range of the HZ24-1LTD-E?
The HZ24-1LTD-E has a specified zener voltage range of 22.9 V to 24.0 V when tested at 0.5 mA zener current. This tight 1.1 V span reflects its use case in precision reference designs where minimal post-manufacturing trimming is required. The value is DC-tested per Renesas specification REJ03G0182-0300 Rev.3.00.
Does the HZ24-1LTD-E support low-current operation?
Yes, the HZ24-1LTD-E is characterized at 0.5 mA zener current, with dynamic resistance and voltage specifications guaranteed at this low test current. Its 1 μA max reverse leakage at 18 V further confirms suitability for µA-range bias networks in battery-powered instrumentation and high-impedance sensor interfaces.
Is the HZ24-1LTD-E RoHS compliant?
Yes, the HZ24-1LTD-E meets EU RoHS Directive requirements. Renesas Electronics confirms environmental compliance for the HZ-L Series in accordance with applicable regulations, including restriction of lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE substances.
What is the maximum junction temperature rating for the HZ24-1LTD-E?
The HZ24-1LTD-E has a maximum junction temperature (Tj) rating of 175°C, enabling reliable operation in demanding industrial and automotive under-hood environments. Derating curves in the datasheet define safe power dissipation limits above 75°C ambient temperature.
How does the noise performance of the HZ24-1LTD-E compare to standard Zener diodes?
The HZ24-1LTD-E achieves approximately 1/3–1/10 the noise level of legacy HZ-series Zeners due to Renesas' optimized silicon planar process. This makes it especially valuable in audio preamplifiers, precision ADC references, and low-level sensor signal chains where broadband noise directly impacts effective resolution.
HZ24-1LTD-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:
- -
HZ24-1LTD-E FAQ
1.How can I place an order for HZ24-1LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ24-1LTD-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 HZ24-1LTD-E reliable?
The price and inventory of HZ24-1LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ24-1LTD-E is usually 5 days.
3.What payment methods are accepted for HZ24-1LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ24-1LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ24-1LTD-E?
HZ24-1LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ24-1LTD-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 HZ24-1LTD-E?
For technical support, including HZ24-1LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ24-1LTD-E requirements.
6.How does Aetrix verify that HZ24-1LTD-E is sourced from the original manufacturer or authorized distributors?
All HZ24-1LTD-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 HZ24-1LTD-E meets industry standards.
7.What is the process for return or replacement of HZ24-1LTD-E?
All HZ24-1LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ24-1LTD-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 HZ24-1LTD-E part is unused and in its original packaging.
Return procedure for HZ24-1LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ24-1LTD-E Tags
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