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Renesas HZ7C2L-JTA
- Part No.:
- HZ7C2L-JTA
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ7C2L-JTA.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
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Inventory:1,095,000
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Product details
Overview
HZ7C2L-JTA from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 7.3–7.7 V at 0.5 mA test current, dynamic resistance of 60 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in stabilized power supplies and reference voltage generators.
For engineers reviewing the HZ7C2L-JTA datasheet, HZ7C2L-JTA pinout, HZ7C2L-JTA application, or HZ7C2L-JTA 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 shunt regulator using silicon planar junction technology optimized for reduced noise generation and stable reverse-bias conduction. Its low leakage current (<1 μA at VR = 2.0 V) and low zener impedance support high-accuracy voltage references in low-power analog signal chains.
The HZ7C2L-JTA exhibits a zener voltage temperature coefficient near zero (≈−0.02 %/°C per Fig.2), enabling minimal drift over ambient temperature variations. It is rated for DC operation only and requires derating above 25°C per the published power dissipation vs. ambient curve (Fig.3).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.3 V min to 7.7 V max at IZ = 0.5 mA - defines stable regulation point for low-drift reference design |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - sets thermal design boundary for PCB trace width and copper area |
| Reverse Current (IR) | 1 μA max at VR = 2.0 V - enables ultra-low quiescent current bias networks |
| Junction Temperature (Tj) | 175°C max - supports operation in high-temperature industrial environments without derating collapse |
| Storage Temperature | −55°C to +175°C - allows use in extended-range automotive and aerospace subsystems |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded case with orange body color and navy blue cathode band. Mass: 0.13 g. Dimensions per SC-40 standard: φD = 2.0 mm, E = 4.2 mm, L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-impedance reference node | Connected to regulated output rail; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Ground or return path | Biased to lower potential; forms shunt path for excess current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Noise level | ≈1/3–1/10 lower than standard HZ series - reduces voltage reference jitter in ADC/DAC bias networks |
| Zener impedance | 60 Ω max - improves line and load regulation in feedback loops requiring <0.5% accuracy |
| Voltage tolerance | ±0.2 V at 7.5 V nominal - enables tighter BOM binning for production calibration without trimming |
| Thermal coefficient | ≈−0.02 %/°C - minimizes drift-induced error in temperature-sensitive instrumentation |
| Leakage current | ≤1 μA at 2.0 V reverse - preserves battery life in always-on sensor nodes and portable meters |
Applications
| High-Precision Reference Source | Low-Noise Power Supply Regulator |
|---|---|
Use Scenario: Generating stable 7.5 V reference for 16-bit SAR ADC front-end biasing in medical ECG amplifiers. IC Role / Device Role / Timing Role: Shunt voltage reference providing low-drift, low-noise DC bias point for op-amp input stages. Use Value: Enables sub-LSB offset stability over −40°C to +85°C due to low γZ and 60 Ω rd. |
Use Scenario: Post-regulation clamping in dual-output 5 V/7.5 V linear supply for RF transceiver LDO inputs. IC Role / Device Role / Timing Role: Low-noise shunt regulator absorbing ripple and transient energy on 7.5 V rail. Use Value: Reduces broadband noise floor by >10 dB versus standard Zeners, improving receiver SNR. |
| Industrial Sensor Excitation | Calibration Voltage Standard |
Use Scenario: Exciting 350 Ω strain gauge bridges in factory-floor load cells requiring stable 7.5 V excitation. IC Role / Device Role / Timing Role: Precision voltage source maintaining bridge common-mode voltage under varying load conditions. Use Value: Limits excitation drift to <50 ppm/°C, directly improving measurement repeatability. |
Use Scenario: Factory calibration reference for handheld multimeters verifying 7.5 V range accuracy. IC Role / Device Role / Timing Role: Traceable, low-hysteresis voltage standard used during end-of-line functional test. Use Value: Maintains ±0.2 V tolerance across 1000+ thermal cycles, supporting ISO/IEC 17025 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A (ON Semiconductor) | Zener voltage 5.1 V, rd = 9 Ω, Pd = 1 W, DO-41 package - higher power but fixed 5.1 V rating | Not suitable for 7.5 V reference designs; requires redesign of bias network and thermal layout | Select only when 5.1 V regulation and higher power margin are required; not drop-in for HZ7C2L-JTA |
| BZX55C7V5 (Vishay) | Zener voltage 7.5 V ±5%, rd = 70 Ω, Pd = 500 mW, DO-35 - wider voltage tolerance and higher impedance | Adequate for general-purpose regulation but lacks low-noise optimization for precision analog | Acceptable for cost-sensitive industrial controls where noise <−60 dBc is not required |
Compared with 1N4733A and BZX55C7V5, the HZ7C2L-JTA delivers tighter voltage tolerance (±0.2 V), lower noise, and optimized thermal coefficient for metrology-grade references - making it preferred where voltage stability and spectral purity outweigh raw power handling.
Availability
HZ7C2L-JTA is available at Aetrix Electronics and suitable for stabilized power supplies, precision analog references, industrial sensor excitation, and calibration standards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HZ7C2L-JTA 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 enterprise systems.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision instrumentation and metrology equipment - emphasizing zener impedance control, thermal coefficient minimization, and process consistency across voltage grades.
FAQ
What is the zener voltage tolerance of HZ7C2L-JTA?
The HZ7C2L-JTA has a specified zener voltage range of 7.3 V minimum to 7.7 V maximum at IZ = 0.5 mA, corresponding to ±0.2 V absolute tolerance. This tight window supports high-accuracy reference designs without external trimming. The HZ7C2L-JTA achieves this via Renesas' planar diffusion process and post-trim screening, ensuring consistency across production lots.
Is HZ7C2L-JTA suitable for DC-only applications?
Yes, the HZ7C2L-JTA is explicitly rated for DC operation only, as noted in the datasheet footnote. Its electrical characteristics - including VZ, rd, and IR - are measured and guaranteed under DC test conditions. Using HZ7C2L-JTA in AC-coupled or pulsed applications may result in uncharacterized behavior and is not recommended without additional validation.
What is the thermal derating behavior of HZ7C2L-JTA above 25°C?
The HZ7C2L-JTA follows a linear derating curve from 400 mW at 25°C down to zero at approximately 175°C, per Figure 3 in the datasheet. At 70°C ambient, usable power drops to ~280 mW. Designers must calculate junction temperature using θJA ≈ 312.5°C/W (derived from 400 mW → 175°C rise) and ensure board layout provides adequate copper area for heat dissipation.
How does the noise performance of HZ7C2L-JTA compare to standard Zener diodes?
The HZ7C2L-JTA delivers approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners, achieved through optimized silicon planar junction geometry and low-leakage processing. This reduction directly lowers RMS voltage noise in reference paths - critical for 16-bit+ data converters and low-frequency instrumentation amplifiers where HZ7C2L-JTA serves as the primary voltage anchor.
What is the cathode identification method for HZ7C2L-JTA?
The HZ7C2L-JTA uses a navy blue cathode band located near one end of its orange-colored DO-35 glass body. Pin 1 (cathode) is the lead adjacent to this band; Pin 2 (anode) is the opposite lead. This marking aligns with JEDEC DO-35 mechanical standards and is verified in the "Pin Arrangement" diagram on page 1 of the datasheet REJ03G0182-0300.
HZ7C2L-JTA 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:
- -
HZ7C2L-JTA FAQ
1.How can I place an order for HZ7C2L-JTA through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ7C2L-JTA 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 HZ7C2L-JTA reliable?
The price and inventory of HZ7C2L-JTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ7C2L-JTA is usually 5 days.
3.What payment methods are accepted for HZ7C2L-JTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ7C2L-JTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ7C2L-JTA?
HZ7C2L-JTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ7C2L-JTA 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 HZ7C2L-JTA?
For technical support, including HZ7C2L-JTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ7C2L-JTA requirements.
6.How does Aetrix verify that HZ7C2L-JTA is sourced from the original manufacturer or authorized distributors?
All HZ7C2L-JTA 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 HZ7C2L-JTA meets industry standards.
7.What is the process for return or replacement of HZ7C2L-JTA?
All HZ7C2L-JTA units undergo pre-shipment inspection (PSI). If there is an issue with HZ7C2L-JTA, 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 HZ7C2L-JTA part is unused and in its original packaging.
Return procedure for HZ7C2L-JTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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