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Renesas HZ24-3TE-E
- Part No.:
- HZ24-3TE-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ24-3TE-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
HZ24-3TE-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 24.3–25.5 V at 0.5 mA test current, dynamic resistance of 120 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in high-stability reference supplies for instrumentation and sensor signal conditioning.
For engineers reviewing the HZ24-3TE-E datasheet, HZ24-3TE-E pinout, HZ24-3TE-E application, or HZ24-3TE-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, 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. Its low dynamic impedance (120 Ω) and low leakage ensure stable regulation under varying load and temperature conditions.
The HZ24-3TE-E exhibits a zener voltage temperature coefficient of approximately −0.04 %/°C (−8 mV/°C) near 24 V, confirmed by Renesas' characteristic curves, and maintains specified performance with DC test conditions only - no AC or transient specifications are provided.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24.3 V min to 25.5 V max at IZ = 0.5 mA - defines regulated output voltage window under nominal bias |
| Dynamic Resistance (rd) | 120 Ω max at IZ = 0.5 mA - determines output impedance and load regulation sensitivity |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - sets absolute thermal limit before derating applies |
| Junction Temperature (Tj) | 175°C max - enables operation in high-ambient industrial environments with appropriate PCB thermal design |
| Reverse Current (IR) | 1 μA max at VR = 20.2 V - ensures minimal standby leakage in battery-backed or low-power references |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - axial-leaded, glass-passivated, industry-standard through-hole package with orange body and navy-blue cathode band |
Pinout & Package
Package: DO-35 glass axial-leaded package per JEITA code GRZZ0002ZB-A; body color orange; cathode identified by navy-blue band; mass ≈ 0.13 g; dimensions L = 26.0 mm, φD = 2.0 mm, E = 4.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; must be held at higher potential than anode during conduction |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Noise Performance | Diode noise level ≈1/3–1/10 that of standard HZ series - critical for low-drift voltage references in audio preamps and ADC front-ends |
| Zener Impedance | 120 Ω max at 0.5 mA - enables <±0.5% output variation over 1–10 mA load current range |
| Voltage Range Coverage | Part of HZ-L family spanning 5.2–38 V - allows single-supplier sourcing for multi-rail reference designs |
| Thermal Stability | Specified storage range −55°C to +175°C and junction limit 175°C - supports extended-temperature industrial deployments |
Applications
| High-Precision Reference Supply | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable excitation voltage to strain gauges and RTDs in weigh scales and process transmitters. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing fixed bias point independent of supply ripple. Use Value: Low dynamic resistance (120 Ω) and low noise suppress measurement drift caused by supply variation and thermal EMF. |
Use Scenario: Biasing photodiode and MEMS microphone preamplifiers in medical diagnostic equipment. IC Role / Device Role / Timing Role: Low-noise DC reference source replacing higher-noise IC regulators where ultra-low broadband noise is mandatory. Use Value: Noise reduction by factor of 3–10 versus legacy HZ-series diodes directly improves SNR in sub-mV signal chains. |
| Industrial Power Monitor Calibration | Programmable Logic Controller (PLC) Analog Input Protection |
Use Scenario: Calibrating shunt-based current-sense amplifiers in motor drives and energy meters. IC Role / Device Role / Timing Role: Precision voltage clamp defining full-scale reference for 16-bit ADCs in metrology-grade modules. Use Value: Tight VZ tolerance (±0.6 V at 24 V) and low tempco (−0.04 %/°C) minimize calibration drift over 0–70°C operating range. |
Use Scenario: Overvoltage clamping on 24 V analog input channels in DIN-rail PLC modules. IC Role / Device Role / Timing Role: Transient voltage suppressor and steady-state clamp limiting input to safe levels for downstream op-amps and ADCs. Use Value: 400 mW power rating and robust DO-35 package withstand repeated 100 ms overvoltage events without degradation. |
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 |
|---|---|---|---|
| 1N5259B (ON Semiconductor) | Zener voltage 24 V ±5%, rd = 130 Ω max, Pd = 500 mW, DO-35 package | Higher power rating but wider VZ tolerance and no published noise spec | Select when absolute max power >400 mW is required and noise is secondary to cost |
| BZX85C24 (Nexperia) | Zener voltage 24 V ±5%, rd = 110 Ω max, Pd = 1.3 W, DO-41 package (larger footprint) | Higher power and lower rd, but larger DO-41 package and uncharacterized noise performance | Select when board space permits larger package and thermal margin >1 W is needed |
Compared with 1N5259B and BZX85C24, the HZ24-3TE-E delivers verified low-noise operation and tighter VZ binning at 400 mW, making it optimal for noise-sensitive 24 V reference designs where DO-35 footprint and thermal constraints are fixed.
Availability
HZ24-3TE-E is available at Aetrix Electronics and suitable for high-precision reference supplies, low-noise sensor biasing, and industrial power monitor calibration requiring stable component supply with consistent parametric performance across production lots.
Supply support for HZ24-3TE-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 manufacturer specializing in microcontrollers, analog power devices, and timing solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series, including HZ24-3TE-E, was designed specifically for low-noise, high-stability voltage reference applications in instrumentation, test equipment, and precision analog signal chains.
FAQ
What is the exact zener voltage range for HZ24-3TE-E?
The HZ24-3TE-E has a guaranteed zener voltage range of 24.3 V minimum to 25.5 V maximum when tested at IZ = 0.5 mA and Ta = 25°C, as specified in Renesas document REJ03G0182-0300 Rev.3.00. This 1.2 V span reflects factory binning for the "3" variant within the HZ24-L family and is measured under DC conditions only.
Is HZ24-3TE-E suitable for surface-mount assembly?
No, the HZ24-3TE-E uses a DO-35 axial-leaded glass package (JEITA GRZZ0002ZB-A) intended for through-hole mounting only. It lacks SMD-compatible terminations or tape-and-reel packaging. For surface-mount equivalents, Renesas does not list an SMD variant of HZ24-3TE-E in the HZ-L Series documentation.
Does HZ24-3TE-E have a specified noise spectral density?
The HZ24-3TE-E datasheet confirms its noise level is approximately 1/3 to 1/10 that of the standard HZ series but does not publish quantitative noise spectral density (nV/√Hz) values. The comparison is relative and derived from Renesas' internal characterization - no frequency-dependent noise data is provided for HZ24-3TE-E.
What is the maximum reverse current for HZ24-3TE-E at rated voltage?
The HZ24-3TE-E specifies a maximum reverse current (IR) of 1 μA at VR = 20.2 V, per the Electrical Characteristics table on page 2 of REJ03G0182-0300. This leakage value is measured under DC conditions and defines the upper bound of off-state conduction below the zener knee.
Can HZ24-3TE-E be used in parallel for higher power handling?
No - the HZ24-3TE-E is not characterized for parallel operation. Its dynamic resistance (120 Ω) and unit-to-unit VZ variation mean current sharing would be uneven, risking thermal runaway. Renesas does not recommend or specify parallel use; instead, select a higher-power Zener or active reference if >400 mW is required.
HZ24-3TE-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:
- -
HZ24-3TE-E FAQ
1.How can I place an order for HZ24-3TE-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ24-3TE-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 HZ24-3TE-E reliable?
The price and inventory of HZ24-3TE-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ24-3TE-E is usually 5 days.
3.What payment methods are accepted for HZ24-3TE-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ24-3TE-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ24-3TE-E?
HZ24-3TE-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ24-3TE-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 HZ24-3TE-E?
For technical support, including HZ24-3TE-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ24-3TE-E requirements.
6.How does Aetrix verify that HZ24-3TE-E is sourced from the original manufacturer or authorized distributors?
All HZ24-3TE-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 HZ24-3TE-E meets industry standards.
7.What is the process for return or replacement of HZ24-3TE-E?
All HZ24-3TE-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ24-3TE-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 HZ24-3TE-E part is unused and in its original packaging.
Return procedure for HZ24-3TE-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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