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Renesas HZ7C1-90TA
- Part No.:
- HZ7C1-90TA
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ7C1-90TA.pdf
- Description:
- DIODE ZENER 7V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZ7C1-90TA from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, featuring a nominal zener voltage of 7.4 V (min 7.2 V / max 7.6 V), dynamic resistance of 60 Ω at 3.5 mA, and 400 mW power dissipation in DO-35 package. It serves as a stable shunt reference in low-drift power supply feedback loops and sensor biasing networks.
For engineers reviewing the HZ7C1-90TA datasheet, HZ7C1-90TA pinout, HZ7C1-90TA application, or HZ7C1-90TA equivalent, key selection criteria include zener voltage tolerance (±0.2 V), temperature coefficient (−0.02 %/°C near 7.4 V), low noise performance (1/3–1/10 that of legacy HZ series), and DO-35 thermal derating behavior up to 175°C junction temperature.
Technical Context
This device operates as a two-terminal shunt voltage regulator with DC-tested zener characteristics: breakdown occurs at 7.2–7.6 V with 3.5 mA test current, exhibiting low dynamic impedance (60 Ω) and minimal leakage (<1 μA at 5.0 V). Its silicon planar construction ensures reproducible breakdown and tight parametric distribution across production lots.
The HZ7C1-90TA belongs to the HZ-L Series distinguished by reduced diode noise-critical for high-resolution ADC references and low-phase-noise oscillator biasing-and specified absolute maximum ratings include 400 mW power dissipation and 175°C junction temperature, enabling use in thermally constrained industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.2 V min / 7.6 V max at IZ = 3.5 mA - defines stable regulation range for feedback networks requiring ±0.2 V tolerance |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 3.5 mA - ensures minimal output voltage shift under load transients in reference circuits |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts with adequate copper area |
| Reverse Leakage (IR) | 1 μA max at VR = 5.0 V - prevents error injection in high-impedance bias nodes and sensor interfaces |
| Junction Temperature (Tj) | −55°C to +175°C - enables deployment in automotive under-hood or industrial motor control ambient conditions |
| Noise Performance | ≈1/3–1/10 of standard HZ-series diodes - directly improves SNR in precision instrumentation amplifier references |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A, Renesas code SC-40), glass axial leaded package with orange body and navy-blue cathode 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) | Regulated output node | Connected to positive rail in shunt configuration; carries full load current during regulation |
| 2 (Anode) | Reference ground node | Biased to system ground or virtual ground; establishes zener conduction path when Vin > VZ |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Diode noise reduced to 10–33% of legacy HZ series - critical for sub-16-bit data acquisition systems |
| Tight zener voltage tolerance | ±0.2 V at 7.4 V nominal - eliminates need for post-regulation trimming in factory-calibrated instruments |
| Stable temperature coefficient | −0.02 %/°C near 7.4 V (Fig.2) - minimizes drift over −40°C to +85°C operating range |
| High power density | 400 mW in DO-35 package - delivers higher regulation headroom than SOD-123 alternatives at same footprint |
| Low leakage current | <1 μA at 5.0 V reverse bias - preserves accuracy in nanoampere-level sensor biasing applications |
Applications
| Industrial Power Supply Reference | High-Resolution ADC Biasing |
|---|---|
|
Use Scenario: Feedback node in isolated 24 V DC-DC converter with ±1% output tolerance requirement. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise error amplifier setpoint. Use Value: 60 Ω dynamic resistance limits output voltage deviation to <±3 mV under 50 mA load step, maintaining regulation integrity. |
Use Scenario: Reference voltage source for 18-bit SAR ADC in portable test equipment. IC Role / Device Role / Timing Role: Low-noise analog voltage reference replacing buried-zener ICs in cost-sensitive designs. Use Value: 1/10 noise level vs. HZ series reduces integrated RMS noise floor by 12 dB, preserving ENOB at full scale. |
| Temperature Sensor Excitation | Op-Amp Precision Biasing |
|
Use Scenario: Constant-current excitation source for platinum RTD (PT100) bridge in HVAC controllers. IC Role / Device Role / Timing Role: Stable 7.4 V source feeding precision current mirror input. Use Value: −0.02 %/°C tempco contributes <±0.05 °C error over −25°C to +70°C ambient, meeting Class B RTD accuracy. |
Use Scenario: Input offset nulling network in low-drift instrumentation amplifier front-end. IC Role / Device Role / Timing Role: Low-leakage bias node stabilizing op-amp input common-mode voltage. Use Value: <1 μA reverse leakage prevents input bias current imbalance, reducing offset drift by 0.5 µV/°C. |
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 |
|---|---|---|---|
| ON Semiconductor MMBZ5233BLT1G | Zener voltage 6.8 V (±5%), rd = 10 Ω, Pd = 300 mW, SOT-23 package | Lower voltage, surface-mount only, higher power density but no DO-35 through-hole option | Select when board space is constrained and 6.8 V suffices; verify thermal relief on PCB for 300 mW derating |
| Vishay NZ9F7V5T5G | Zener voltage 7.5 V (±5%), rd = 40 Ω, Pd = 200 mW, SOD-123 package | Higher nominal voltage, tighter dynamic resistance, but halved power rating and different thermal profile | Prefer for ultra-low-impedance needs below 7.5 V; confirm ambient temperature does not exceed 70°C to sustain 200 mW |
Compared with MMBZ5233BLT1G and NZ9F7V5T5G, the HZ7C1-90TA offers superior noise performance and higher power handling in through-hole DO-35 form, making it optimal for legacy industrial designs and high-stability analog signal chains where thermal margin and long-term drift matter more than footprint size.
Availability
HZ7C1-90TA is available at Aetrix Electronics and suitable for industrial power supply reference, high-resolution ADC biasing, and temperature sensor excitation requiring stable component supply with consistent parametric distribution and long-lifecycle support.
Supply support for HZ7C1-90TA 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 manufacturer specializing in microcontrollers, analog and power devices, and SoC solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog systems-addressing limitations of earlier HZ-series diodes in metrology-grade instrumentation and sensor signal conditioning.
FAQ
What is the zener voltage tolerance of HZ7C1-90TA?
The HZ7C1-90TA has a zener voltage range of 7.2 V minimum to 7.6 V maximum at 3.5 mA test current, corresponding to a ±0.2 V absolute tolerance. This tight spread eliminates post-assembly calibration in many industrial reference designs and is confirmed in the Renesas REJ03G0182-0300 datasheet, Page 2.
Does HZ7C1-90TA support high-temperature operation?
Yes, HZ7C1-90TA is rated for junction temperatures up to +175°C and storage temperatures from −55°C to +175°C. Its DO-35 package and silicon planar construction enable reliable operation in under-hood automotive or industrial motor drive environments where ambient temperatures exceed 100°C.
How does the noise performance of HZ7C1-90TA compare to standard Zener diodes?
HZ7C1-90TA achieves approximately 1/3 to 1/10 the noise level of legacy HZ-series Zener diodes, as stated in the "Features" section of the Renesas datasheet. This reduction directly improves signal-to-noise ratio in precision ADC references and low-phase-noise oscillator bias networks.
What is the maximum reverse leakage current for HZ7C1-90TA?
The maximum reverse leakage current for HZ7C1-90TA is 1 μA at 5.0 V reverse voltage (VR), per the Electrical Characteristics table on Page 2 of the REJ03G0182-0300 datasheet. This low leakage preserves accuracy in high-impedance bias circuits such as op-amp offset nulling networks.
Is HZ7C1-90TA available in surface-mount packages?
No, HZ7C1-90TA is exclusively offered in the DO-35 axial leaded glass package (JEITA code GRZZ0002ZB-A). Renesas does not list any SMT variant for this specific part number; alternative low-noise Zeners like MMBZ5233BLT1G exist but differ in voltage, power, and package.
HZ7C1-90TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- HZ
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7 V
- Tolerance:
- ±2.86%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 3.5 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ7C1-90TA FAQ
1.How can I place an order for HZ7C1-90TA through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ7C1-90TA 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 HZ7C1-90TA reliable?
The price and inventory of HZ7C1-90TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ7C1-90TA is usually 5 days.
3.What payment methods are accepted for HZ7C1-90TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ7C1-90TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ7C1-90TA?
HZ7C1-90TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ7C1-90TA 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 HZ7C1-90TA?
For technical support, including HZ7C1-90TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ7C1-90TA requirements.
6.How does Aetrix verify that HZ7C1-90TA is sourced from the original manufacturer or authorized distributors?
All HZ7C1-90TA 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 HZ7C1-90TA meets industry standards.
7.What is the process for return or replacement of HZ7C1-90TA?
All HZ7C1-90TA units undergo pre-shipment inspection (PSI). If there is an issue with HZ7C1-90TA, 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 HZ7C1-90TA part is unused and in its original packaging.
Return procedure for HZ7C1-90TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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