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Renesas HZ7B2JTA-E
- Part No.:
- HZ7B2JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ7B2JTA-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZ7B2JTA-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, with a nominal zener voltage of 6.9 V to 7.2 V at 0.5 mA, dynamic resistance of 60 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in high-stability power supply feedback paths and sensor biasing networks.
For engineers reviewing the HZ7B2JTA-E datasheet, HZ7B2JTA-E pinout, HZ7B2JTA-E application, or HZ7B2JTA-E equivalent, key selection criteria include zener voltage tolerance (±0.3 V), low noise performance (1/3–1/10 of standard HZ series), zener impedance stability across operating current, thermal coefficient behavior below 10 mV/°C, and DO-35 package compatibility with through-hole PCB layouts.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage under varying load conditions via controlled reverse-biased breakdown. Its low dynamic resistance (60 Ω) and tight zener voltage tolerance ensure minimal regulation error across 0.5–1 mA test currents.
The HZ7B2JTA-E exhibits a zener voltage temperature coefficient near zero (≤ ±0.08 %/°C per Fig.2), enabling stable reference performance over −55°C to +175°C ambient range. Its DO-35 glass package provides hermetic sealing and thermal robustness suitable for industrial-grade analog signal chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.9 V min to 7.2 V max at IZ = 0.5 mA - defines precise regulation point for feedback loops |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - ensures minimal output voltage shift under load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB footprints |
| Junction Temperature (Tj) | 175°C max - enables reliable use in high-temperature industrial environments |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - minimizes quiescent current loss in battery-powered references |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - industry-standard axial leaded glass package with orange body and navy-blue cathode band |
Pinout & Package
DO-35 glass axial-leaded package with orange body color and navy-blue cathode band. Cathode identified by colored band; anode is unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-bias voltage applied here to initiate zener conduction |
| 2 (unbanded end) | Anode | Connected to circuit ground or low-impedance return path; completes shunt regulation loop |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener operation | Diode noise level reduced to 1/3–1/10 of standard HZ series - critical for audio preamps and precision ADC references |
| Tight zener voltage tolerance | ±0.3 V window at 0.5 mA - eliminates need for post-regulation trimming in mid-accuracy systems |
| Low dynamic impedance | 60 Ω max - maintains regulation accuracy even with ±10% load current variation |
| High thermal stability | Temperature coefficient ≤ ±0.08 %/°C - limits drift to < ±0.6 mV/°C over full operating range |
Applications
| Instrumentation Reference | Industrial Sensor Biasing |
|---|---|
Use Scenario: Precision voltage reference in 16-bit data acquisition front-ends requiring sub-10 ppm/°C drift. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable excitation for bridge sensors and reference input to SAR ADCs. Use Value: Enables < ±0.02% full-scale linearity error over −40°C to +85°C without calibration due to low tempco and noise. | Use Scenario: Biasing thermistor and RTD signal conditioning circuits in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Low-drift, low-noise zener source for constant-current excitation and ratiometric reference generation. Use Value: Reduces measurement uncertainty by 40% vs. standard Zeners due to 60 Ω impedance and <1 μA leakage at 2 V reverse bias. |
| Low-Power LDO Feedback | Medical Analog Front-End |
Use Scenario: Output voltage setting element in discrete adjustable LDO regulators for portable medical monitors. IC Role / Device Role / Timing Role: Precision shunt element defining regulated output voltage via resistor divider feedback network. Use Value: Supports 3.3 V/5 V outputs with < ±1.5% initial accuracy and < ±0.5% load regulation error across 1–10 mA load range. | Use Scenario: Reference voltage source in ECG amplifier stages where signal integrity and low-frequency noise are critical. IC Role / Device Role / Timing Role: Low-noise DC reference for op-amp offset nulling and gain-setting networks. Use Value: Achieves < 0.5 μVpp integrated noise (0.1–10 Hz) - 3× lower than generic Zeners - preserving microvolt-level biopotential signals. |
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 |
|---|---|---|---|
| 1N4734A | Zener voltage 5.6 V ±5%, rd = 9 Ω, Pd = 1 W, DO-41 package | Higher power but looser tolerance and higher noise - suited for non-critical regulation only | Select when higher power handling is required and ±5% VZ tolerance is acceptable |
| BZX55C6V2 | Zener voltage 6.2 V ±5%, rd = 10 Ω, Pd = 500 mW, DO-35 package | Lower VZ, wider tolerance, no low-noise specification - lacks documented noise reduction | Choose for cost-sensitive designs where low-noise performance is not required |
Compared with 1N4734A and BZX55C6V2, the HZ7B2JTA-E delivers tighter voltage control (±0.3 V), verified low-noise operation, and superior thermal stability - making it the preferred choice for precision analog reference paths where signal fidelity outweighs raw power capability.
Availability
HZ7B2JTA-E is available at Aetrix Electronics and suitable for instrumentation reference design, industrial sensor biasing, and low-power LDO feedback networks requiring stable component supply, long-term obsolescence resilience, and traceable sourcing for medical and industrial OEM programs.
Supply support for HZ7B2JTA-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 delivering microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and IoT applications.
The HZ-L Series Zener diodes were developed specifically for low-noise, high-stability voltage reference applications in precision analog systems - emphasizing reduced noise floor, tight voltage tolerance, and robust thermal performance over standard general-purpose Zeners.
FAQ
What is the exact zener voltage range specified for HZ7B2JTA-E?
The HZ7B2JTA-E has a guaranteed zener voltage range of 6.9 V minimum to 7.2 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This 0.3 V window reflects tight process control for precision reference use, and the value remains stable across its rated current range of 0.5–1 mA. The HZ7B2JTA-E datasheet (REJ03G0182-0300 Rev.3.00) confirms this specification on Page 2 under Electrical Characteristics.
Does HZ7B2JTA-E meet low-noise requirements for audio applications?
Yes - the HZ7B2JTA-E is explicitly characterized for low-noise operation, with diode noise approximately 1/3 to 1/10 that of the standard HZ series. Its low dynamic resistance (60 Ω) and tight voltage tolerance minimize broadband and low-frequency noise contributions, making the HZ7B2JTA-E suitable for microphone preamplifier biasing and DAC reference circuits where signal-to-noise ratio is critical.
What is the package type and marking convention for HZ7B2JTA-E?
HZ7B2JTA-E uses the DO-35 glass axial-leaded package (JEITA code GRZZ0002ZB-A), with an orange body and navy-blue cathode band. Pin 1 (cathode) is identified by the banded end; Pin 2 (anode) is the unbanded lead. The "JTA-E" suffix denotes Renesas' internal packaging and testing variant within the HZ-L family, confirmed in the ordering information section of the REJ03G0182-0300 datasheet.
Can HZ7B2JTA-E replace standard Zener diodes like 1N4733A in existing designs?
Direct replacement depends on layout and performance requirements: HZ7B2JTA-E shares the DO-35 footprint with 1N4733A but offers tighter voltage tolerance (±0.3 V vs. ±5%), lower noise, and lower dynamic resistance (60 Ω vs. ~10 Ω). However, its 400 mW power rating is lower than 1N4733A's 1 W. The HZ7B2JTA-E is best suited for precision upgrades - not drop-in swaps - unless thermal and noise margins are prioritized over power headroom.
What is the maximum allowable reverse current before breakdown in HZ7B2JTA-E?
The HZ7B2JTA-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 2.0 V and Ta = 25°C. This ultra-low leakage ensures minimal parasitic loading in high-impedance reference nodes. Breakdown begins near 6.9 V, and stable zener operation is guaranteed above 0.5 mA forward test current. These values are validated in the Electrical Characteristics table on Page 2 of the HZ7B2JTA-E datasheet.
HZ7B2JTA-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:
- -
HZ7B2JTA-E FAQ
1.How can I place an order for HZ7B2JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ7B2JTA-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 HZ7B2JTA-E reliable?
The price and inventory of HZ7B2JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ7B2JTA-E is usually 5 days.
3.What payment methods are accepted for HZ7B2JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ7B2JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ7B2JTA-E?
HZ7B2JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ7B2JTA-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 HZ7B2JTA-E?
For technical support, including HZ7B2JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ7B2JTA-E requirements.
6.How does Aetrix verify that HZ7B2JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ7B2JTA-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 HZ7B2JTA-E meets industry standards.
7.What is the process for return or replacement of HZ7B2JTA-E?
All HZ7B2JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ7B2JTA-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 HZ7B2JTA-E part is unused and in its original packaging.
Return procedure for HZ7B2JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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