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Renesas HZS7B3LTD-E
- Part No.:
- HZS7B3LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7B3LTD-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
HZS7B3LTD-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 7.0–7.3 V, 400 mW power dissipation, and dynamic resistance of 60 Ω at 3.5 mA test current - deployed in stabilized power supplies and reference circuits requiring high stability and minimal noise.
For engineers reviewing the HZS7B3LTD-E datasheet, HZS7B3LTD-E pinout, HZS7B3LTD-E application, or HZS7B3LTD-E equivalent, this part serves as a low-noise, surface-mount-compatible Zener solution with verified thermal coefficient behavior, tight voltage tolerance, and suitability for automated insertion in 5 mm-pitch PCB assembly lines.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its low dynamic impedance (60 Ω) and reduced noise level (≈1/3–1/10 of HZ-series diodes) stem from optimized doping profile and junction geometry, enabling stable DC reference generation under low-current bias conditions (IZ = 3.5 mA).
The HZS7B3LTD-E exhibits a negative temperature coefficient near 0 mV/°C at ~7 V, minimizing drift across ambient temperature ranges. It is rated for junction temperatures up to 200°C and designed for operation within standard industrial temperature limits (−55°C to +175°C storage), with specified reverse leakage ≤1 μA at VR = 2.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.0–7.3 V at IZ = 3.5 mA - defines precise regulation point for low-drift reference design |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 3.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling |
| Reverse Leakage Current (IR) | ≤1 μA at VR = 2.0 V - guarantees negligible error contribution in high-impedance bias networks |
| Junction Temperature (Tj) | 200°C maximum - enables reliable operation in thermally demanding environments such as industrial power modules |
| Zener Noise Level | ≈1/3–1/10 of HZ-series - directly reduces RMS noise in precision ADC references and sensor signal conditioning |
Pinout & Package
Package: MHD (JEITA GRZZ0002ZC-A), molded plastic, axial lead, 2.0 mm diameter × 26.0 mm length, 5 mm pitch compatible for high-speed automatic insertion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal / voltage reference output | Connected to regulated node; polarity marking via black band; requires current-limiting resistor upstream |
| 2 (Anode) | Low-side terminal / return path | Typically tied to ground or common reference plane; completes bias current path for zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise reduced to ≈1/3–1/10 of legacy HZ-series - critical for high-resolution data acquisition front-ends |
| Tight zener voltage tolerance | ±0.15 V window (7.0–7.3 V) at 3.5 mA - enables accurate calibration without post-manufacture trimming |
| Stable temperature coefficient | Near-zero mV/°C drift around 7 V - minimizes reference error over −40°C to +85°C operating range |
| High reliability packaging | MHD package with 0.084 g typical mass and JEITA-compliant dimensions - qualified for automated SMT-compatible insertion |
| Low leakage performance | ≤1 μA reverse current at 2.0 V - preserves accuracy in high-impedance voltage divider and op-amp feedback networks |
Applications
| Industrial Power Supply Reference | Precision ADC Voltage Reference |
|---|---|
Use Scenario: Stabilized ±5 V and ±12 V rails in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Zener diode providing fixed 7.2 V reference for error amplifier feedback loop in isolated DC-DC converter. Use Value: Low dynamic resistance (60 Ω) maintains regulation accuracy under varying load currents; low noise prevents coupling into analog control signals. |
Use Scenario: 16-bit SAR ADC reference input stage in industrial process monitoring equipment. IC Role / Device Role / Timing Role: Primary voltage reference source for internal DAC-based reference buffer circuitry. Use Value: Ultra-low noise characteristic suppresses quantization uncertainty; tight VZ tolerance eliminates need for digital calibration. |
| Sensor Signal Conditioning | Automated Test Equipment Bias |
Use Scenario: Bridge sensor excitation and offset nulling in strain-gauge-based load cells. IC Role / Device Role / Timing Role: Stable bias voltage generator for instrumentation amplifier common-mode setting. Use Value: Near-zero temperature coefficient ensures consistent bridge excitation across environmental chambers (−25°C to +70°C). |
Use Scenario: Programmable current source bias network in semiconductor parametric test systems. IC Role / Device Role / Timing Role: Precision shunt reference for op-amp-controlled MOSFET gate drive in constant-current sink circuits. Use Value: 400 mW power rating supports sustained 10 mA bias current; low leakage avoids measurement drift during long-duration tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5231BS | Zener voltage 6.2 V ±5%, Pd = 200 mW, rd = 10 Ω typical - lower power rating and narrower voltage range | Best suited for low-power portable devices; not recommended for industrial 400 mW thermal budgets | Select when board space is constrained and 6.2 V reference suffices; verify thermal derating above 50°C ambient |
| Vishay BZX84-C7V5 | Zener voltage 7.5 V ±5%, Pd = 300 mW, rd = 70 Ω max - higher voltage tolerance and reduced power handling | Used in consumer-grade power adapters; lacks low-noise optimization for precision analog use | Choose only for cost-sensitive non-critical references; avoid where noise <10 µVRMS is required |
Compared with MMBZ5231BS and BZX84-C7V5, the HZS7B3LTD-E delivers superior thermal stability, higher power margin, and industry-leading noise reduction - making it the preferred choice for industrial-grade reference designs where long-term drift and signal integrity are design-critical.
Availability
HZS7B3LTD-E is available at Aetrix Electronics and suitable for industrial power supply reference, precision ADC voltage reference, and sensor signal conditioning applications requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for HZS7B3LTD-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 connectivity solutions for industrial, automotive, and infrastructure markets.
The HZS-L Series was developed specifically for low-noise, high-stability voltage reference applications in industrial power systems and precision analog signal chains - emphasizing zener voltage accuracy, thermal predictability, and manufacturability in automated assembly.
FAQ
What is the exact zener voltage range for HZS7B3LTD-E?
The HZS7B3LTD-E has a guaranteed zener voltage range of 7.0 V to 7.3 V when tested at IZ = 3.5 mA and Ta = 25°C. This tight 0.3 V window reflects its role as a precision reference device, and the specification is confirmed in Renesas' official datasheet REJ03G0166-0300 Rev.3.00. The HZS7B3LTD-E achieves this tolerance through controlled diffusion and screening during manufacturing.
Does HZS7B3LTD-E support automated PCB assembly?
Yes, the HZS7B3LTD-E uses the MHD package (JEITA GRZZ0002ZC-A) explicitly designed for 5 mm-pitch high-speed automatic insertion. Its axial lead configuration, standardized 2.0 mm body diameter, and 26.0 mm length comply with pick-and-place and wave-soldering requirements. Renesas confirms compatibility with standard industrial insertion equipment - no manual placement or rework is needed for the HZS7B3LTD-E.
What is the maximum allowable reverse leakage current for HZS7B3LTD-E?
The HZS7B3LTD-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 2.0 V and Ta = 25°C. This low leakage ensures minimal error injection in high-impedance reference networks, such as those used in op-amp feedback paths or precision voltage dividers. The value is measured per Renesas' test condition and applies directly to the HZS7B3LTD-E without derating.
How does the noise performance of HZS7B3LTD-E compare to standard Zener diodes?
The HZS7B3LTD-E delivers approximately 1/3 to 1/10 the noise level of Renesas' legacy HZ-series Zener diodes, due to optimized planar junction design and low-noise doping. This makes the HZS7B3LTD-E especially valuable in low-level analog signal paths - for example, in 16-bit+ ADC references or sensor excitation circuits where broadband noise below 10 kHz must be minimized. The improvement is intrinsic to the HZS7B3LTD-E's structure, not external filtering.
Is HZS7B3LTD-E suitable for automotive applications?
No, the HZS7B3LTD-E is classified as a "Standard" quality grade device per Renesas' product grading system and is intended for computers, office equipment, industrial robots, and communications equipment - not automotive or safety-critical systems. It has not undergone AEC-Q101 qualification, and Renesas explicitly excludes transportation equipment from its recommended applications for the HZS-L Series. For automotive use, a qualified alternative must be selected instead of the HZS7B3LTD-E.
HZS7B3LTD-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:
- -
HZS7B3LTD-E FAQ
1.How can I place an order for HZS7B3LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7B3LTD-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 HZS7B3LTD-E reliable?
The price and inventory of HZS7B3LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7B3LTD-E is usually 5 days.
3.What payment methods are accepted for HZS7B3LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7B3LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7B3LTD-E?
HZS7B3LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7B3LTD-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 HZS7B3LTD-E?
For technical support, including HZS7B3LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7B3LTD-E requirements.
6.How does Aetrix verify that HZS7B3LTD-E is sourced from the original manufacturer or authorized distributors?
All HZS7B3LTD-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 HZS7B3LTD-E meets industry standards.
7.What is the process for return or replacement of HZS7B3LTD-E?
All HZS7B3LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7B3LTD-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 HZS7B3LTD-E part is unused and in its original packaging.
Return procedure for HZS7B3LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS7B3LTD-E Tags
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