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Renesas HZS7C1LTD-E
- Part No.:
- HZS7C1LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7C1LTD-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:30,500
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Product details
Overview
HZS7C1LTD-E 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 7.2–7.6 V at 0.5 mA, dynamic resistance of 60 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 200°C. It is used in stabilized power supplies, sensor excitation circuits, and instrumentation references where low noise and tight voltage tolerance are critical.
For engineers reviewing the HZS7C1LTD-E datasheet, HZS7C1LTD-E pinout, HZS7C1LTD-E application, or HZS7C1LTD-E equivalent, key selection criteria include zener voltage tolerance (±0.4 V), low dynamic impedance (60 Ω), low leakage current (<1 μA at VR = 2.0 V), thermal stability (temperature coefficient curve per Fig.2), and compatibility with 5 mm-pitch high-speed automatic insertion.
Technical Context
This device belongs to the HZS-L series, engineered using silicon planar process technology to achieve reduced diode noise-approximately 1/3 to 1/10 that of the legacy HZ series. Its low zener impedance (60 Ω) and low leakage current (<1 μA) support stable regulation under light-load conditions typical in reference and biasing applications.
The diode operates with DC test conditions per specification: zener voltage measured at IZ = 0.5 mA, reverse current tested at VR = 2.0 V, and dynamic resistance derived at IZ = 3.5 mA. Its MHD package (JEITA code GRZZ0002ZC-A) supports surface-mount-compatible through-hole mounting with cathode band marking and 2.0 mm diameter lead spacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.2–7.6 V at IZ = 0.5 mA - defines precise regulation point for low-drift references |
| Dynamic Resistance (rd) | 60 Ω at IZ = 3.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW - enables operation in compact PCB layouts without forced cooling |
| Reverse Current (IR) | <1 μA at VR = 2.0 V - guarantees negligible quiescent current in high-impedance bias networks |
| Junction Temperature (Tj) | −55 to +200°C - supports extended industrial and automotive under-hood environments |
| Package | MHD (GRZZ0002ZC-A) - standardized 2-pin axial lead package with 5 mm pitch compatibility |
Pinout & Package
The HZS7C1LTD-E uses the MHD package: axial-leaded, 2-pin, cathode-band marked, JEITA code GRZZ0002ZC-A, with lead diameter φb = 0.4 mm, body diameter φD = 2.0 mm, and E = 2.4 mm pin spacing. Mass is 0.084 g (typ).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated positive rail; reverse-biased operation requires higher potential than anode |
| 2 (Anode) | Reference ground node | Typically tied to circuit common; establishes reference potential for voltage clamping or biasing |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Noise level ~1/3–1/10 that of HZ series - improves SNR in precision ADC references and sensor front-ends |
| Tight zener voltage tolerance | ±0.4 V over 7.2–7.6 V range - reduces calibration overhead in factory-trimmed systems |
| Low dynamic impedance | 60 Ω at 3.5 mA - maintains regulation accuracy across varying load currents in feedback loops |
| High thermal robustness | 200°C max junction temperature - enables use in thermally constrained enclosures without derating |
| Automated assembly compatibility | 5 mm pitch support - allows direct integration into high-volume SMT-compatible through-hole insertion lines |
Applications
| Instrumentation Reference | Stabilized Power Supply |
|---|---|
|
Use Scenario: Precision voltage reference for 16-bit SAR ADC biasing in portable data loggers. IC Role / Device Role / Timing Role: Zener diode provides stable 7.4 V reference to ADC's internal reference buffer. Use Value: Low 60 Ω dynamic resistance minimizes code-dependent reference droop during conversion cycles. |
Use Scenario: Output voltage stabilization in low-power linear regulator (e.g., LDO feedback divider). IC Role / Device Role / Timing Role: Shunt regulator element maintaining constant 7.4 V on feedback node. Use Value: Sub-1 μA leakage ensures no measurable error in high-resistance feedback networks. |
| Sensor Excitation | Industrial Signal Conditioning |
|
Use Scenario: Constant-current excitation source for platinum RTD bridges in HVAC controllers. IC Role / Device Role / Timing Role: Zener sets reference voltage for op-amp-based current source. Use Value: Low noise prevents modulation of bridge output, preserving <10 ppm measurement linearity. |
Use Scenario: Overvoltage clamp protecting analog input stages of PLC I/O modules. IC Role / Device Role / Timing Role: Fast-acting shunt limiter triggered above 7.6 V threshold. Use Value: 400 mW power rating sustains transient surges without thermal runaway or parameter shift. |
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 |
|---|---|---|---|
| 1N4733A (ON Semiconductor) | Zener voltage 5.1 V ±5%, rd = 9 Ω, Pd = 1 W, DO-41 package | Higher power, lower voltage, tighter tolerance but higher noise vs. HZS7C1LTD-E | Select when >500 mW dissipation or 5.1 V reference is required; not suitable for low-noise 7.4 V use cases |
| BZX84-C7V5 (Diodes Inc.) | Zener voltage 7.5 V ±5%, rd = 15 Ω, Pd = 300 mW, SOT-23 package | Smaller footprint, lower power, surface-mount only, higher tempco drift above 70°C | Prefer for space-constrained PCBs where 300 mW suffices and reflow compatibility is mandatory |
Compared with 1N4733A and BZX84-C7V5, the HZS7C1LTD-E delivers superior low-noise performance and tighter voltage control within its 7.2–7.6 V range, making it optimal for metrology-grade references where noise and long-term drift dominate design constraints-not just basic regulation.
Availability
HZS7C1LTD-E is available at Aetrix Electronics and suitable for stabilized power supply design, precision instrumentation reference, and industrial sensor excitation requiring stable component supply across multi-year production cycles.
Supply support for HZS7C1LTD-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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZS-L series was developed specifically for low-noise, high-stability voltage reference applications in test equipment, medical instruments, and industrial control systems demanding precision beyond standard Zener performance.
FAQ
What is the zener voltage tolerance of HZS7C1LTD-E?
The HZS7C1LTD-E has a specified zener voltage range of 7.2 V to 7.6 V at IZ = 0.5 mA, yielding a ±0.4 V absolute tolerance. This tight window supports accurate voltage setting in untrimmed analog circuits and reduces post-manufacturing calibration effort. The HZS7C1LTD-E datasheet confirms this range under DC test conditions with no derating applied.
Does HZS7C1LTD-E support automated PCB assembly?
Yes, the HZS7C1LTD-E is designed for 5 mm-pitch high-speed automatic insertion, as explicitly stated in the Renesas HZS-L Series datasheet. Its MHD package features standardized lead spacing and mechanical dimensions compatible with industry-standard axial component feeders and placement heads, enabling reliable throughput in high-volume manufacturing.
How does the noise performance of HZS7C1LTD-E compare to standard Zener diodes?
The HZS7C1LTD-E achieves approximately 1/3 to 1/10 the diode noise level of the legacy HZ series, per Renesas documentation. This ultra-low noise behavior stems from its silicon planar construction and optimized doping profile, making the HZS7C1LTD-E especially valuable in precision analog signal chains-such as sensor front-ends and reference buffers-where noise directly impacts measurement resolution.
What is the maximum power dissipation rating for HZS7C1LTD-E?
The HZS7C1LTD-E has a maximum power dissipation (Pd) rating of 400 mW at Ta = 25°C, as defined in the Absolute Maximum Ratings table. Derating is required above 25°C ambient per Fig.3 in the datasheet, with full derating to zero at 150°C ambient. This 400 mW rating allows the HZS7C1LTD-E to sustain continuous regulation in compact, passively cooled designs without heatsinking.
Is HZS7C1LTD-E suitable for automotive under-hood applications?
The HZS7C1LTD-E supports junction temperatures up to 200°C and storage temperatures from −55°C to +175°C, meeting extended thermal requirements found in non-safety-critical automotive under-hood subsystems. However, Renesas classifies it as "Standard" grade-not "High Quality"-so it is not qualified for safety-related automotive functions like engine control or braking systems without additional validation by the end user.
HZS7C1LTD-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:
- -
HZS7C1LTD-E FAQ
1.How can I place an order for HZS7C1LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7C1LTD-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 HZS7C1LTD-E reliable?
The price and inventory of HZS7C1LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7C1LTD-E is usually 5 days.
3.What payment methods are accepted for HZS7C1LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7C1LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7C1LTD-E?
HZS7C1LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7C1LTD-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 HZS7C1LTD-E?
For technical support, including HZS7C1LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7C1LTD-E requirements.
6.How does Aetrix verify that HZS7C1LTD-E is sourced from the original manufacturer or authorized distributors?
All HZS7C1LTD-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 HZS7C1LTD-E meets industry standards.
7.What is the process for return or replacement of HZS7C1LTD-E?
All HZS7C1LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7C1LTD-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 HZS7C1LTD-E part is unused and in its original packaging.
Return procedure for HZS7C1LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS7C1LTD-E Tags
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