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Renesas HZ2C3JTA-E
- Part No.:
- HZ2C3JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ2C3JTA-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
HZ2C3JTA-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 6.4 V (min 6.1 V, max 6.4 V), 400 mW power dissipation, 60 Ω dynamic resistance at 0.5 mA test current, and DO-35 glass package with orange body and navy-blue cathode band.
For engineers reviewing the HZ2C3JTA-E datasheet, HZ2C3JTA-E pinout, HZ2C3JTA-E application, or HZ2C3JTA-E equivalent, this device serves as a low-noise, low-leakage voltage reference in stabilized power supplies, sensor biasing networks, and analog front-end calibration circuits where thermal stability and noise floor are critical selection criteria.
Technical Context
The HZ2C3JTA-E belongs to the HZ-L Series, engineered specifically to reduce diode noise by a factor of 3–10 versus standard HZ-series Zeners. Its low zener impedance (60 Ω) and tight voltage tolerance (±0.3 V at 6.4 V nominal) support stable regulation under light-load conditions.
Designed for DC operation only, it operates within a junction temperature range of −55°C to +175°C and exhibits a zener voltage temperature coefficient of approximately −0.02 %/°C near 6.4 V - indicating slight negative drift with rising temperature, consistent with low-voltage Zener behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.1 V min to 6.4 V max at IZ = 0.5 mA - defines precise clamping threshold for reference or protection circuits |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under small-signal load changes |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous DC power handling before thermal derating |
| Reverse Current (IR) | 1 μA max at VR = 2.0 V - confirms low leakage for high-impedance bias networks |
| Junction Temperature (Tj) | −55°C to +175°C - enables operation in industrial and automotive under-hood environments |
| Package | DO-35 glass axial - provides hermetic sealing, low parasitic capacitance, and compatibility with through-hole PCB assembly |
Pinout & Package
DO-35 glass axial package with orange body and navy-blue cathode band; total length 26.0 mm, body diameter 2.0 mm, lead spacing 4.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener anode connection point | Connected to higher-potential node in reverse-bias configuration; marked by navy-blue band |
| 2 (Anode) | Zener cathode connection point | Connected to lower-potential node (typically ground or return path); unmarked end |
Key Features
| Feature | Design Value |
|---|---|
| Noise reduction vs. HZ series | Approximately 1/3–1/10 lower noise - directly improves SNR in precision ADC references and low-level signal conditioning |
| Low zener impedance | 60 Ω max at 0.5 mA - maintains regulation accuracy across varying source impedances in feedback loops |
| Wide zener voltage range | 5.2 V to 38 V available across HZ-L family - supports scalable reference design without topology change |
| Hermetic DO-35 packaging | Glass-sealed axial leads - ensures long-term parameter stability and moisture resistance in harsh environments |
Applications
| High-Precision Voltage Reference | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable excitation voltage to bridge-based pressure sensors in industrial transmitters. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to deliver fixed 6.4 V reference independent of supply ripple. Use Value: Low 60 Ω dynamic resistance minimizes output shift under sensor bridge current variations, improving measurement repeatability. | Use Scenario: Biasing photodiode amplifiers in optical smoke detectors where dark-current stability is critical. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) Zener establishes clean DC bias point for transimpedance amplifier input. Use Value: Ultra-low noise level suppresses baseline fluctuations, enabling reliable detection of weak photocurrent signals. |
| Stabilized Power Supply Shunt Regulator | Analog Front-End Calibration Reference |
Use Scenario: Shunt regulation in low-power 12 V auxiliary rails feeding microcontroller peripherals. IC Role / Device Role / Timing Role: Zener clamps rail voltage during transient overvoltage events while sinking excess current. Use Value: 400 mW power rating allows sustained dissipation without thermal runaway under fault conditions. | Use Scenario: On-board calibration reference for 16-bit DACs in medical instrumentation. IC Role / Device Role / Timing Role: Precision 6.4 V reference source for DAC full-scale adjustment and offset trimming. Use Value: Tight ±0.3 V tolerance and low tempco (−0.02 %/°C) ensure calibration validity across operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C6V2 (ON Semiconductor) | 6.2 V nominal, 500 mW Pd, 100 Ω rd, DO-35 package | Higher dynamic resistance and wider voltage tolerance (±5%) - less suitable for low-noise analog references | Select when cost sensitivity outweighs noise performance and tighter voltage control is not required |
| MMSZ5232B (Diodes Inc.) | 6.2 V nominal, 350 mW Pd, 70 Ω rd, SOD-123 surface-mount package | SMD form factor and lower power rating - incompatible with through-hole layouts and higher-power shunt use cases | Choose only for space-constrained PCBs where reworkability and axial lead compatibility are secondary concerns |
Compared with BZX55C6V2 and MMSZ5232B, the HZ2C3JTA-E delivers superior noise performance and tighter voltage tolerance in a proven DO-35 through-hole package - making it the preferred choice for legacy industrial designs and analog systems demanding long-term parametric stability.
Availability
HZ2C3JTA-E is available at Aetrix Electronics and suitable for stabilized power supply shunt regulation, precision voltage reference generation, and low-noise sensor biasing requiring stable component supply across extended production lifecycles.
Supply support for HZ2C3JTA-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 Technology Corp. is a Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed to address demand for ultra-low-noise Zener diodes in high-fidelity analog signal chains and metrology-grade instrumentation - emphasizing noise floor reduction, thermal stability, and long-term parameter consistency.
FAQ
What is the exact zener voltage range specified for HZ2C3JTA-E?
The HZ2C3JTA-E has a guaranteed zener voltage range of 6.1 V minimum to 6.4 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This 0.3 V spread reflects tight process control for precision reference applications, and the device is part of the HZ-L Series' "C3" variant group specifying the upper bound of each 0.3 V bin.
Is HZ2C3JTA-E suitable for surface-mount assembly?
No, the HZ2C3JTA-E uses a DO-35 glass axial package with 26.0 mm overall length and 2.0 mm body diameter, designed exclusively for through-hole mounting. It is not compatible with reflow or wave soldering processes used for SMD components, and no SMT variant of this specific part number exists in the HZ-L Series documentation.
What is the maximum reverse current specification for HZ2C3JTA-E?
The HZ2C3JTA-E specifies a maximum reverse current (IR) of 1 μA at VR = 2.0 V and Ta = 25°C. This low leakage supports high-impedance circuit nodes such as op-amp inputs or capacitor-coupled bias networks where current draw must be minimized to avoid signal distortion or drift.
Does HZ2C3JTA-E have a documented temperature coefficient?
Yes - while the datasheet does not list a single γZ value for HZ2C3JTA-E specifically, Figure 2 shows that HZ-L Series devices with zener voltages near 6.4 V exhibit a temperature coefficient of approximately −0.02 %/°C. This negative coefficient aligns with typical low-voltage Zener behavior and is confirmed across the HZ6CxL subgroup.
Can HZ2C3JTA-E replace standard HZ-series Zeners in existing designs?
Yes, the HZ2C3JTA-E is a direct drop-in replacement for HZ6C3L in DO-35 packages, sharing identical pinout, dimensions, and electrical ratings - but with significantly reduced noise (≈1/3–1/10 of HZ-series) and improved dynamic resistance. No PCB or schematic changes are required, though system-level noise testing is recommended to validate improvement.
HZ2C3JTA-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:
- -
HZ2C3JTA-E FAQ
1.How can I place an order for HZ2C3JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ2C3JTA-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 HZ2C3JTA-E reliable?
The price and inventory of HZ2C3JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ2C3JTA-E is usually 5 days.
3.What payment methods are accepted for HZ2C3JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ2C3JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ2C3JTA-E?
HZ2C3JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ2C3JTA-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 HZ2C3JTA-E?
For technical support, including HZ2C3JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ2C3JTA-E requirements.
6.How does Aetrix verify that HZ2C3JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ2C3JTA-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 HZ2C3JTA-E meets industry standards.
7.What is the process for return or replacement of HZ2C3JTA-E?
All HZ2C3JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ2C3JTA-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 HZ2C3JTA-E part is unused and in its original packaging.
Return procedure for HZ2C3JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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