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Renesas HZS7B1LTA-E
- Part No.:
- HZS7B1LTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7B1LTA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:20,000
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Product details
Overview
HZS7B1LTA-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, with a nominal zener voltage of 6.7 V to 7.0 V, dynamic resistance of 60 Ω at 3.5 mA, and maximum power dissipation of 400 mW. It features ultra-low noise (≈1/3–1/10 that of the HZ series), low leakage current (<1 μA at VR = 2.0 V), and is qualified for standard-grade industrial applications including stabilized power supplies and sensor signal conditioning.
For engineers reviewing the HZS7B1LTA-E datasheet, HZS7B1LTA-E pinout, HZS7B1LTA-E application, or HZS7B1LTA-E equivalent, this device serves as a high-stability, low-noise voltage reference where tight regulation, minimal thermal drift, and low impedance under bias are critical - especially in instrumentation amplifiers, ADC reference buffers, and low-power analog front-ends.
Technical Context
The HZS7B1LTA-E employs a silicon planar junction structure with controlled doping and geometry to achieve stable zener breakdown at ~6.85 V (typical), low dynamic impedance (60 Ω), and reduced flicker noise versus legacy HZ-series diodes. Its zener voltage temperature coefficient is approximately +2.0 mV/°C near 6.8 V, indicating positive TC behavior typical of mid-voltage Zeners.
Designed for DC-biased operation, it operates within a reverse current range of 0.5–3.5 mA and maintains specified VZ tolerance (±0.15 V) and rd across ambient temperatures from −55°C to +175°C. The device is not intended for AC-coupled or high-frequency regulation due to inherent junction capacitance and lack of specified transient response data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.7 V (min) to 7.0 V (max) at IZ = 0.5 mA - defines precise DC reference point for feedback loops and bias networks. |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 3.5 mA - ensures minimal output voltage variation under load current changes in shunt regulator topologies. |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling. |
| Reverse Leakage (IR) | <1 μA max at VR = 2.0 V - minimizes error current in high-impedance reference nodes and reduces quiescent power loss. |
| Junction Temperature (Tj) | 200°C max - enables reliable operation in thermally demanding environments such as enclosed industrial enclosures or automotive under-hood proximity. |
| Noise Level | ≈1/3–1/10 of HZ-series diodes - directly improves SNR in precision analog stages like microphone preamps or strain gauge bridges. |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), axial-leaded, 5 mm pitch, glass-passivated silicon planar diode with black cathode band. Dimensions: φD = 2.0 mm (nom), L = 26.0 mm (min), mass ≈ 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side connection to regulated node | Connected to positive rail or reference output; carries reverse bias current and sets zener operating point. |
| 2 (Anode) | Low-side return path | Typically grounded or tied to lower potential; completes current path and establishes reference ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise performance | Reduces broadband voltage noise in reference paths, enabling sub-16-bit ADC accuracy without external filtering. |
| Stable zener impedance | 60 Ω dynamic resistance ensures predictable regulation margin in shunt-based feedback networks. |
| Wide operating temperature range | −55°C to +175°C storage and junction rating supports deployment in industrial motor drives and outdoor sensing nodes. |
| Standard-grade qualification | Approved for computers, office equipment, test instruments, and industrial robots per Renesas quality grading. |
Applications
| Instrumentation Amplifier Reference | ADC Voltage Reference Buffer |
|---|---|
Use Scenario: Precision DC-coupled measurement of microvolt-level sensor outputs (e.g., thermocouples, RTDs). IC Role / Device Role / Timing Role: Provides stable, low-noise bias voltage for op-amp offset nulling and common-mode level setting. Use Value: Enables <10 μVpp noise floor in gain stages by suppressing zener-induced ripple and thermal drift. |
Use Scenario: High-resolution analog-to-digital conversion in portable data loggers with battery-powered rails. IC Role / Device Role / Timing Role: Serves as primary shunt reference for SAR or sigma-delta ADCs requiring <0.1% initial accuracy. Use Value: Delivers 6.85 V ±0.15 V reference with <1 μA leakage, minimizing standby current draw and reference error. |
| Low-Power Sensor Signal Conditioning | Industrial Power Supply Stabilization |
Use Scenario: Signal conditioning for MEMS accelerometers in condition-monitoring edge nodes. IC Role / Device Role / Timing Role: Supplies clean, low-drift excitation voltage to bridge sensors while rejecting supply ripple. Use Value: Maintains <0.02%/°C TC stability and <60 Ω impedance to preserve sensor linearity over −40°C to +85°C. |
Use Scenario: Secondary-side voltage clamping and regulation in isolated DC-DC converters for PLC I/O modules. IC Role / Device Role / Timing Role: Acts as precision shunt regulator in feedback optocoupler networks to stabilize 5 V or 3.3 V outputs. Use Value: Ensures <±1% output tolerance under 10–90% load transients due to low rd and fast recovery from overload. |
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 1N4734A | Zener voltage 5.6 V (fixed), rd = 9 Ω, Pd = 1 W, higher noise than HZS-L series. | Higher power handling but lacks low-noise optimization; suitable for general-purpose regulation, not precision references. | Select when >500 mW dissipation is required and noise is non-critical. |
| Vishay BZX84-C6V8 | SOT-23 package, 6.8 V ±5%, rd = 40 Ω, Pd = 300 mW, surface-mount only. | Enables automated assembly on dense PCBs but has narrower temp range (−65°C to +150°C) and no documented low-noise spec. | Choose for space-constrained designs where reflow compatibility outweighs ultra-low-noise requirement. |
Compared with 1N4734A and BZX84-C6V8, the HZS7B1LTA-E offers superior noise performance and tighter VZ tolerance in an axial-leaded through-hole package ideal for prototyping and industrial serviceability - making it preferred for metrology-grade analog subsystems where reference integrity is paramount.
Availability
HZS7B1LTA-E is available at Aetrix Electronics and suitable for stabilized power supplies, precision instrumentation amplifiers, and industrial sensor signal conditioning requiring stable component supply and long-term traceability.
Supply support for HZS7B1LTA-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip 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 diagnostics, and factory automation systems where conventional Zener diodes introduce unacceptable signal corruption.
FAQ
What is the exact zener voltage range for HZS7B1LTA-E at 0.5 mA test current?
The HZS7B1LTA-E has a guaranteed zener voltage range of 6.7 V (minimum) to 7.0 V (maximum) when tested at IZ = 0.5 mA, per Renesas REJ03G0166-0300 Rev.3.00. This 0.3 V window ensures predictable bias point selection in feedback networks and allows design margin for temperature drift and aging effects. The typical value is approximately 6.85 V.
Is HZS7B1LTA-E suitable for use in automotive applications?
HZS7B1LTA-E is classified as a Standard-grade Renesas product, approved for computers, office equipment, test instruments, and industrial robots - but not certified for automotive (High Quality grade) applications. It lacks AEC-Q101 qualification and is not recommended for engine control units, ADAS modules, or other safety-critical vehicle systems without additional validation by the end customer.
Does HZS7B1LTA-E have a specified junction capacitance or frequency response?
No junction capacitance or AC frequency response parameters are specified for HZS7B1LTA-E in the official Renesas datasheet (REJ03G0166-0300). The device is characterized and optimized for DC and low-frequency (<1 kHz) operation only. For RF or high-speed switching applications, alternative voltage references with published Cj and transient response data should be selected.
What is the maximum allowable reverse current for continuous operation of HZS7B1LTA-E?
The maximum recommended DC reverse current for continuous operation of HZS7B1LTA-E is 3.5 mA, as defined by the dynamic resistance test condition in the Electrical Characteristics table. Exceeding this current risks exceeding the 400 mW power limit at elevated ambient temperatures and may accelerate long-term parameter drift. Derating is required above 25°C per the power dissipation vs. ambient temperature curve.
How does the noise performance of HZS7B1LTA-E compare to generic Zener diodes?
HZS7B1LTA-E delivers approximately 1/3 to 1/10 the noise level of standard HZ-series Zener diodes, as confirmed in Renesas' comparative characterization. This reduction stems from optimized planar junction fabrication and low-leakage processing, directly lowering broadband voltage noise in reference paths - a measurable advantage in 16+ bit data acquisition systems where reference noise dominates total system ENOB.
HZS7B1LTA-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:
- -
HZS7B1LTA-E FAQ
1.How can I place an order for HZS7B1LTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7B1LTA-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 HZS7B1LTA-E reliable?
The price and inventory of HZS7B1LTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7B1LTA-E is usually 5 days.
3.What payment methods are accepted for HZS7B1LTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7B1LTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7B1LTA-E?
HZS7B1LTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7B1LTA-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 HZS7B1LTA-E?
For technical support, including HZS7B1LTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7B1LTA-E requirements.
6.How does Aetrix verify that HZS7B1LTA-E is sourced from the original manufacturer or authorized distributors?
All HZS7B1LTA-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 HZS7B1LTA-E meets industry standards.
7.What is the process for return or replacement of HZS7B1LTA-E?
All HZS7B1LTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7B1LTA-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 HZS7B1LTA-E part is unused and in its original packaging.
Return procedure for HZS7B1LTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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