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Renesas HZ16-2JTA-E
- Part No.:
- HZ16-2JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ16-2JTA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZ16-2JTA-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage reference and precision stabilization in analog signal chains, with nominal zener voltage 15.7–16.5 V, 400 mW power dissipation, 14.0 Ω dynamic resistance at 0.5 mA, −55 to +175 °C storage temperature range, and DO-35 package. It serves in high-stability power supply feedback loops and sensor biasing circuits where noise suppression is critical.
For engineers reviewing the HZ16-2JTA-E datasheet, HZ16-2JTA-E pinout, HZ16-2JTA-E application, or HZ16-2JTA-E equivalent, key selection criteria include verified low-noise performance (1/3–1/10 of standard HZ series), tight zener voltage tolerance, low leakage current (<1 μA at VR = 2.0 V), and thermal stability across industrial ambient conditions.
Technical Context
The HZ16-2JTA-E employs a silicon planar junction structure with controlled doping profile to minimize generation-recombination noise-critical for low-noise voltage references in instrumentation amplifiers and ADC reference buffers. Its zener voltage temperature coefficient is −0.04 %/°C near 16 V, enabling stable operation without external compensation over −25 to +85 °C ambient.
Designed for DC-biased operation only (per datasheet Note 1), it exhibits 80 Ω maximum dynamic impedance at 1 mA test current and maintains <1 μA reverse leakage up to 2.0 V reverse bias-supporting high-impedance sensing nodes and low-power standby regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.7–16.5 V at IZ = 0.5 mA - defines precise regulation point for feedback networks requiring ±2.5 % tolerance |
| Power Dissipation (Pd) | 400 mW at Ta = 25 °C - supports continuous operation in compact PCB layouts without forced cooling |
| Dynamic Resistance (rd) | 14.0 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | <1 μA at VR = 2.0 V - preserves high-impedance node integrity in battery-powered sensor interfaces |
| Junction Temperature (Tj) | 175 °C max - enables reliable operation in enclosed industrial enclosures with limited airflow |
| Noise Level | ≈1/3–1/10 of HZ series - directly reduces RMS noise contribution in precision reference paths |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded case with orange body and navy blue cathode band. Dimensions per SC-40 outline: φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm, mass ≈ 0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground terminal | Bias path return; requires low-impedance connection to system ground for stable regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Generation-recombination noise reduced to 10–33 % of legacy HZ series-critical for sub-μV noise floor designs |
| Tight zener voltage tolerance | ±2.5 % band (15.7–16.5 V) enables single-diode reference without trimming resistors |
| Low dynamic impedance | 14.0 Ω max ensures <14 mV output shift per 1 mA load change-ideal for op-amp reference inputs |
| High thermal stability | −0.04 %/°C tempco near 16 V minimizes drift in unregulated environments (e.g., automotive cabin) |
| Robust reliability | 175 °C max junction temperature and −55 °C min storage rating support extended-life industrial deployments |
Applications
| Instrumentation Amplifier Reference | ADC Voltage Reference Buffer |
|---|---|
Use Scenario: Providing stable 16 V reference to INA128-type instrumentation amps in strain-gauge bridge circuits. IC Role / Device Role / Timing Role: Precision voltage reference source establishing common-mode and gain-setting node. Use Value: Low 14 Ω rd and sub-μA leakage prevent gain error drift and offset instability under varying sensor loading. |
Use Scenario: Biasing the REF input of 24-bit delta-sigma ADCs (e.g., ADS1256) in weigh-scale front-ends. IC Role / Device Role / Timing Role: Low-noise analog reference generator decoupling ADC accuracy from supply ripple. Use Value: 1/10 noise level vs. standard Zeners directly improves effective resolution by ≥0.5 LSB in noise-sensitive conversions. |
| Low-Power Sensor Biasing | Industrial Power Supply Feedback |
Use Scenario: Supplying stable bias to MEMS pressure sensor ICs in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Ultra-low-leakage (≤1 μA) voltage clamp maintaining sensor excitation voltage during sleep modes. Use Value: Enables >10-year battery life by eliminating quiescent current penalty typical of shunt regulators. |
Use Scenario: Secondary-side voltage sensing in isolated 24 V DC-DC converters for PLC I/O modules. IC Role / Device Role / Timing Role: Zener-based feedback element in optocoupler-coupled regulation loop. Use Value: 400 mW Pd and 175 °C Tj rating ensure long-term reliability in thermally constrained DIN-rail enclosures. |
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 |
|---|---|---|---|
| 1N4744A (ON Semiconductor) | Zener voltage 14 V ±5 %, rd = 19 Ω, noise not specified, Pd = 1 W | Higher power but wider tolerance and no low-noise characterization | Select when absolute power handling >400 mW is required and noise is secondary to cost |
| BZX84-C16 (Diodes Inc.) | SOT-23 package, 16 V ±5 %, rd = 40 Ω, Pd = 300 mW, no low-noise spec | Surface-mount form factor but higher impedance and unverified noise performance | Select for space-constrained PCBs where DO-35 axial leads are impractical |
Compared with 1N4744A and BZX84-C16, the HZ16-2JTA-E delivers tighter voltage tolerance, lower dynamic impedance, and documented low-noise behavior-making it the preferred choice for metrology-grade analog references where spectral purity and thermal stability are design-critical.
Availability
HZ16-2JTA-E is available at Aetrix Electronics and suitable for instrumentation amplifier references, ADC voltage reference buffers, low-power sensor biasing, and industrial power supply feedback requiring stable component supply and long-lifecycle continuity.
Supply support for HZ16-2JTA-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 specializing in microcontrollers, analog power, and trusted system solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series Zener diodes were engineered specifically for low-noise, high-stability voltage reference applications in precision analog systems-addressing limitations of legacy HZ-series noise and tempco performance.
FAQ
What is the exact zener voltage range for HZ16-2JTA-E?
The HZ16-2JTA-E has a guaranteed zener voltage range of 15.7 V to 16.5 V when tested at IZ = 0.5 mA and Ta = 25 °C. This 2.5 % tolerance band is tighter than standard Zener diodes and eliminates need for post-assembly calibration in many precision reference designs. The HZ16-2JTA-E achieves this via controlled planar junction processing and screening.
Does HZ16-2JTA-E support AC or pulsed operation?
No-the HZ16-2JTA-E is specified for DC operation only, as explicitly stated in the datasheet (Note 1 on pages 2 and 3). Its electrical characteristics-including dynamic resistance and noise-are measured under steady-state DC bias. Using HZ16-2JTA-E in AC-coupled or switching applications may result in undefined noise, impedance, and thermal behavior.
How does the noise performance of HZ16-2JTA-E compare to standard Zeners?
The HZ16-2JTA-E delivers approximately 1/3 to 1/10 the noise level of the legacy HZ series, achieved through optimized silicon planar junction design that suppresses generation-recombination mechanisms. This reduction is measurable in RMS voltage noise spectral density and directly improves SNR in precision analog signal paths where HZ16-2JTA-E serves as reference.
What is the maximum allowable reverse voltage before breakdown for HZ16-2JTA-E?
The HZ16-2JTA-E is not rated for reverse voltage operation below its zener voltage-it begins regulating at ~15.7 V and enters full breakdown above that threshold. Per datasheet Electrical Characteristics, reverse leakage remains ≤1 μA up to VR = 2.0 V; operation above this voltage without entering breakdown is not defined. Always bias HZ16-2JTA-E in zener mode for intended function.
Is HZ16-2JTA-E suitable for automotive under-hood applications?
The HZ16-2JTA-E supports storage temperatures from −55 to +175 °C and junction temperatures up to 175 °C, meeting under-hood thermal requirements. However, Renesas explicitly states in the datasheet (Page 5, Note 7) that HZ-L Series devices are *not* qualified for automobile applications unless specifically designated-so HZ16-2JTA-E should not be used in safety-critical or ASIL-rated automotive systems without formal qualification.
HZ16-2JTA-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:
- -
HZ16-2JTA-E FAQ
1.How can I place an order for HZ16-2JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ16-2JTA-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 HZ16-2JTA-E reliable?
The price and inventory of HZ16-2JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ16-2JTA-E is usually 5 days.
3.What payment methods are accepted for HZ16-2JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ16-2JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ16-2JTA-E?
HZ16-2JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ16-2JTA-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 HZ16-2JTA-E?
For technical support, including HZ16-2JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ16-2JTA-E requirements.
6.How does Aetrix verify that HZ16-2JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ16-2JTA-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 HZ16-2JTA-E meets industry standards.
7.What is the process for return or replacement of HZ16-2JTA-E?
All HZ16-2JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ16-2JTA-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 HZ16-2JTA-E part is unused and in its original packaging.
Return procedure for HZ16-2JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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