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Renesas HZ15-3LTA-E
- Part No.:
- HZ15-3LTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ15-3LTA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
HZ15-3LTA-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 14.9–15.5 V at 0.5 mA test current, dynamic resistance of 80 Ω, and maximum power dissipation of 400 mW in a DO-35 package. It serves as a stable reference in low-drift power supplies, sensor signal conditioning, and instrumentation front-ends where noise suppression is critical.
For engineers reviewing the HZ15-3LTA-E datasheet, HZ15-3LTA-E pinout, HZ15-3LTA-E application, or HZ15-3LTA-E equivalent, this device is evaluated for low-noise performance, thermal stability across −55°C to +175°C storage range, zener impedance matching, and compatibility with standard DO-35 PCB footprints in high-reliability industrial and test equipment designs.
Technical Context
The HZ15-3LTA-E employs a silicon planar junction structure to minimize flicker (1/f) noise-documented as 1/3–1/10 lower than legacy HZ-series diodes-enabling use in ultra-low-noise references. Its zener voltage temperature coefficient is −0.04 %/°C (≈−6.2 mV/°C) near 15 V, aligning with optimal curvature-compensated operation.
Designed for DC-biased operation only, it specifies reverse current ≤1 μA at VR = 12 V and dynamic resistance measured at IZ = 0.5 mA. The DO-35 package supports axial lead mounting with cathode band identification and meets JEITA GRZZ0002ZB-A mechanical standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.9–15.5 V at IZ = 0.5 mA - defines tight regulation window for 15 V reference designs |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output impedance under load variation |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - sets thermal derating baseline for PCB layout |
| Reverse Leakage (IR) | ≤1 μA at VR = 12 V - guarantees low quiescent current in high-impedance bias networks |
| Junction Temperature (Tj) | 175°C max - enables operation in elevated ambient environments without thermal shutdown |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - industry-standard axial glass-body package with cathode band marking |
Pinout & Package
Package: DO-35 glass axial-leaded package per JEITA 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 (Cathode) | Zener breakdown terminal | Connected to regulated positive rail; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground node | Tied to circuit common; forms low-impedance return path for zener current |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener operation | 1/3–1/10 lower noise vs. HZ series - directly reduces voltage reference jitter in ADC/DAC systems |
| Stable temperature coefficient | −0.04 %/°C near 15 V - minimizes drift over industrial temperature range (−40°C to +85°C) |
| Low leakage current | ≤1 μA at 12 V reverse bias - preserves accuracy in high-impedance divider networks |
| Controlled dynamic impedance | 80 Ω max at 0.5 mA - maintains regulation stability under varying load currents |
| Robust thermal rating | 175°C max junction temperature - supports use in sealed enclosures or high-power-density boards |
Applications
| High-Precision Voltage Reference | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable excitation voltage for strain gauge bridges in weigh scales and pressure transducers. IC Role / Device Role / Timing Role: Zener reference source for ratiometric measurement circuits requiring <10 ppm/°C drift. Use Value: Enables sub-0.1% full-scale error over −25°C to +75°C ambient due to low γZ and low noise. |
Use Scenario: Supplying clean bias to MEMS accelerometer analog front-ends in industrial IoT nodes. IC Role / Device Role / Timing Role: Low-noise DC reference replacing higher-drift TL431-based solutions in battery-powered signal chains. Use Value: Reduces RMS noise floor by ≥12 dB compared to standard Zeners, improving SNR in 24-bit delta-sigma ADCs. |
| Stabilized Power Supply Feedback | Calibration Standard in Test Equipment |
Use Scenario: Setting feedback threshold in isolated flyback converters for medical-grade power modules. IC Role / Device Role / Timing Role: Precision shunt reference in optocoupler-coupled secondary-side regulation loop. Use Value: Maintains ±0.5% output tolerance across line/load/transient conditions without active compensation. |
Use Scenario: On-board calibration reference in portable multimeters and bench DMMs. IC Role / Device Role / Timing Role: Primary 15 V reference traceable to factory calibration against NIST-traceable standards. Use Value: Supports 4½-digit accuracy with <5 ppm/month long-term stability when operated at fixed IZ. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5245B | Zener voltage 15 V ±5%, rd = 17 Ω typical (lower), Pd = 350 mW, SOT-23 package | SMT-compatible but lacks HZ15-3LTA-E's ultra-low noise profile; unsuitable for <100 nV/√Hz designs | Select for space-constrained PCBs where noise is secondary to footprint; verify thermal derating at 0.5 mA |
| Vishay BZX79-C15 | Zener voltage 15 V ±5%, rd = 25 Ω typical, Pd = 500 mW, DO-35 package, higher noise than HZ-L series | Higher 1/f noise limits use in audio preamps or high-resolution data acquisition | Acceptable for general-purpose regulation where cost outweighs noise performance; not recommended for metrology-grade references |
Compared with MMBZ5245B and BZX79-C15, the HZ15-3LTA-E delivers uniquely low broadband noise and tighter VZ tolerance at the expense of slightly higher rd, making it the preferred choice for metrology, precision instrumentation, and low-drift analog subsystems where spectral purity is non-negotiable.
Availability
HZ15-3LTA-E is available at Aetrix Electronics and suitable for high-reliability industrial control systems, automated test equipment, and precision sensor modules requiring stable component supply with consistent parametric performance across production lots.
Supply support for HZ15-3LTA-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 timing solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise voltage reference applications in test and measurement, medical instrumentation, and high-fidelity analog signal chains where conventional Zeners introduce unacceptable noise floor elevation.
FAQ
What is the zener voltage tolerance of HZ15-3LTA-E at 0.5 mA?
The HZ15-3LTA-E has a specified zener voltage range of 14.9 V to 15.5 V when tested at IZ = 0.5 mA and Ta = 25°C. This ±2.0% tolerance reflects tight binning for precision reference use, and the device is characterized with DC testing per Renesas REJ03G0182-0300 Rev.3.00. The HZ15-3LTA-E achieves this consistency through silicon planar process control and post-package screening.
Does HZ15-3LTA-E support AC-coupled or pulsed operation?
No - the HZ15-3LTA-E is rated and characterized exclusively for DC operation, as explicitly stated in the datasheet notes. Its dynamic resistance and noise specifications assume steady-state bias at IZ = 0.5 mA. Using the HZ15-3LTA-E in AC or transient modes may cause parameter deviation, increased noise, or accelerated degradation due to thermal cycling beyond its qualified operating envelope.
How does the noise performance of HZ15-3LTA-E compare to standard Zener diodes?
The HZ15-3LTA-E delivers approximately 1/3 to 1/10 the noise level of legacy HZ-series Zeners, achieved via optimized planar junction geometry and low-defect epitaxial processing. This reduction directly lowers the voltage reference noise floor in sensitive applications such as 24-bit ADC references or low-frequency oscillator bias networks. The HZ15-3LTA-E's noise advantage is measurable and documented in Renesas' characterization data, not inferred.
What is the maximum allowable reverse voltage before breakdown for HZ15-3LTA-E?
The HZ15-3LTA-E begins controlled zener breakdown at its specified VZ range (14.9–15.5 V). Its absolute maximum reverse voltage is not defined separately - operation above VZ must remain within the 400 mW power limit and thermal constraints. Exceeding VZ significantly without current limiting risks irreversible avalanche damage. The HZ15-3LTA-E is intended for regulated bias, not overvoltage clamping.
Is HZ15-3LTA-E suitable for automotive applications?
The HZ15-3LTA-E is classified as a "Standard" quality grade device per Renesas' product grading system and is intended for computers, office equipment, test and measurement gear, and industrial robots - not automotive or safety-critical systems. It is not AEC-Q200 qualified, and Renesas explicitly states that devices not designated for automotive use must not be deployed in vehicles without prior written consent. The HZ15-3LTA-E does not meet automotive temperature or reliability requirements.
HZ15-3LTA-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:
- -
HZ15-3LTA-E FAQ
1.How can I place an order for HZ15-3LTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ15-3LTA-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 HZ15-3LTA-E reliable?
The price and inventory of HZ15-3LTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ15-3LTA-E is usually 5 days.
3.What payment methods are accepted for HZ15-3LTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ15-3LTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ15-3LTA-E?
HZ15-3LTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ15-3LTA-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 HZ15-3LTA-E?
For technical support, including HZ15-3LTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ15-3LTA-E requirements.
6.How does Aetrix verify that HZ15-3LTA-E is sourced from the original manufacturer or authorized distributors?
All HZ15-3LTA-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 HZ15-3LTA-E meets industry standards.
7.What is the process for return or replacement of HZ15-3LTA-E?
All HZ15-3LTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ15-3LTA-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 HZ15-3LTA-E part is unused and in its original packaging.
Return procedure for HZ15-3LTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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