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Renesas HZ7C1L-E
- Part No.:
- HZ7C1L-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ7C1L-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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- Shipping:
Inventory:5,000
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Product details
Overview
HZ7C1L-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 7.2–7.6 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 reference supplies for ADCs, sensor signal conditioning, and low-drift op-amp bias networks.
For engineers reviewing the HZ7C1L-E datasheet, HZ7C1L-E pinout, HZ7C1L-E application, or HZ7C1L-E equivalent, key selection criteria include zener voltage tolerance (±0.4 V), low noise performance (1/3–1/10 that of standard HZ series), DO-35 package compatibility, thermal stability (γZ ≈ −0.04 %/°C near 7.4 V), and suitability for low-current (<1 mA) stabilization where leakage and impedance critically affect accuracy.
Technical Context
The HZ7C1L-E operates as a two-terminal voltage reference device using silicon planar junction technology optimized for reduced flicker and thermal noise. Its zener voltage is specified under DC test conditions at IZ = 0.5 mA, with reverse current limited to 1 μA at VR = 2.0 V.
It exhibits a negative temperature coefficient near −0.04 %/°C (≈ −3.0 mV/°C) at its nominal operating point, consistent with mid-voltage Zener devices, and maintains stable regulation across ambient temperatures from −55°C to +175°C with derated power dissipation above 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.2–7.6 V at IZ = 0.5 mA - defines tight regulation window for precision references. |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - ensures minimal output voltage shift under load variation. |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB layouts with adequate heatsinking. |
| Junction Temperature (Tj) | −55°C to +175°C - enables use in automotive under-hood and industrial control environments. |
| Reverse Leakage (IR) | ≤1 μA at VR = 2.0 V - minimizes error current in high-impedance reference nodes. |
| Noise Performance | ≈1/3–1/10 of standard HZ series - directly reduces RMS noise in sensitive analog front-ends. |
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; dimensions: 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 positive rail; polarity must be observed to avoid forward conduction. |
| 2 (Anode) | Reference ground terminal | Biased to circuit common; forms low-impedance return path for zener current. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Reduces broadband voltage noise by factor of 3–10 vs. legacy HZ series - critical for 16-bit+ data acquisition. |
| Tight VZ tolerance | ±0.4 V over 7.2–7.6 V range at 0.5 mA - enables accurate trimming without external resistors. |
| Low dynamic impedance | 60 Ω max ensures <1 mV output shift per 100 μA load change - improves PSRR in buffered references. |
| High thermal stability | Negative tempco of −0.04 %/°C minimizes drift over industrial temperature range (−40°C to +85°C). |
| Robust reliability | Rated for 175°C junction temperature and −55°C storage - suitable for reflow-soldered automotive modules. |
Applications
| ADC Reference Supply | Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 7.4 V reference to 24-bit delta-sigma ADCs in weigh-scale transducer interfaces. IC Role / Device Role / Timing Role: Primary voltage reference source for analog-to-digital conversion accuracy. Use Value: Low 60 Ω impedance and sub-μA leakage prevent gain error and offset drift during sampling. |
Use Scenario: Biasing bridge amplifiers in strain-gauge pressure sensors operating at 125°C ambient. IC Role / Device Role / Timing Role: Stable excitation voltage source for Wheatstone bridge networks. Use Value: 175°C Tj rating and −0.04 %/°C tempco maintain ±0.05% reference stability over full range. |
| Op-Amp Bias Network | Low-Power IoT Reference |
Use Scenario: Generating dual-rail bias voltages for rail-to-rail op-amps in battery-powered medical monitors. IC Role / Device Role / Timing Role: Precision DC node stabilizer in high-Z feedback paths. Use Value: 1 μA max reverse leakage avoids loading errors in nanoampere-level bias currents. |
Use Scenario: Ultra-low-power voltage reference for NB-IoT sensor nodes with 10-year battery life. IC Role / Device Role / Timing Role: Standby-mode reference generator enabling wake-up threshold accuracy. Use Value: 400 mW Pd and DO-35 footprint allow efficient thermal design in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A (ON Semiconductor) | VZ = 5.1 V, rd = 9 Ω, Pd = 1 W, DO-41 package - higher power but wider VZ tolerance (±5%) and no low-noise optimization. | Used in general-purpose power supply regulation, not precision analog references. | Select only if higher power and looser accuracy are acceptable; not recommended for sub-10 ppm systems. |
| BZX55C7V5 (Vishay) | VZ = 7.5 V ±5%, rd = 70 Ω, Pd = 500 mW, DO-35 - similar package but higher noise and ±5% tolerance vs. HZ7C1L-E's ±0.4 V. | Common in consumer-grade voltage clamping and basic regulation; lacks low-noise certification. | Acceptable for cost-sensitive designs where 0.5% reference error is tolerable; verify noise spectral density before use in audio/medical. |
Compared with 1N4733A and BZX55C7V5, the HZ7C1L-E delivers superior voltage accuracy (±0.4 V vs. ±5%), lower noise (3–10× reduction), and tighter tempco control - making it uniquely suited for metrology-grade references where long-term drift and spectral purity are design-critical.
Availability
HZ7C1L-E is available at Aetrix Electronics and suitable for precision ADC reference supplies, sensor excitation circuits, op-amp bias networks, and low-power IoT reference designs requiring stable component supply with traceable lot history and extended lifecycle support.
Supply support for HZ7C1L-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 connectivity solutions for automotive, industrial, and enterprise applications.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision instrumentation and sensor signal chains - emphasizing reduced flicker noise, tight VZ tolerance, and robust thermal performance.
FAQ
What is the exact zener voltage range for HZ7C1L-E?
The HZ7C1L-E has a guaranteed zener voltage range of 7.2 V to 7.6 V when tested at IZ = 0.5 mA and Ta = 25°C. This ±0.4 V window reflects tighter manufacturing control than standard Zener diodes and supports high-accuracy reference design without post-assembly trimming.
Does HZ7C1L-E support surface-mount assembly?
No - the HZ7C1L-E uses a DO-35 axial-leaded glass package (JEITA GRZZ0002ZB-A), designed for through-hole mounting. It is not compatible with SMT reflow profiles or pick-and-place equipment; alternative SMD Zeners like the HZ7C1L-TB would be required for surface-mount applications.
What is the maximum reverse leakage current for HZ7C1L-E?
The HZ7C1L-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 2.0 V and Ta = 25°C. This ultra-low leakage preserves accuracy in high-impedance reference nodes and minimizes error contributions in nanoampere-biased circuits.
How does the noise performance of HZ7C1L-E compare to standard Zeners?
The HZ7C1L-E achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to optimized silicon planar junction processing. This reduction is measured across the 10 Hz–10 kHz band and directly improves SNR in precision analog signal chains using the HZ7C1L-E as a reference source.
Is HZ7C1L-E suitable for automotive under-hood applications?
Yes - the HZ7C1L-E is rated for junction temperatures up to +175°C and storage from −55°C to +175°C, meeting requirements for under-hood engine control and transmission modules. Its DO-35 package and low-tempco behavior support reliable operation in thermally aggressive automotive environments.
HZ7C1L-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:
- -
HZ7C1L-E FAQ
1.How can I place an order for HZ7C1L-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ7C1L-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 HZ7C1L-E reliable?
The price and inventory of HZ7C1L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ7C1L-E is usually 5 days.
3.What payment methods are accepted for HZ7C1L-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ7C1L-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ7C1L-E?
HZ7C1L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ7C1L-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 HZ7C1L-E?
For technical support, including HZ7C1L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ7C1L-E requirements.
6.How does Aetrix verify that HZ7C1L-E is sourced from the original manufacturer or authorized distributors?
All HZ7C1L-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 HZ7C1L-E meets industry standards.
7.What is the process for return or replacement of HZ7C1L-E?
All HZ7C1L-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ7C1L-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 HZ7C1L-E part is unused and in its original packaging.
Return procedure for HZ7C1L-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ7C1L-E Tags
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