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Renesas HZS7B1TA-E
- Part No.:
- HZS7B1TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7B1TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
HZS7B1TA-E from Renesas Electronics is a silicon planar Zener diode designed for voltage regulation and stabilization in low-power supply circuits, featuring a nominal zener voltage of 7.5 V (min 7.5 V, max 7.9 V), 400 mW power dissipation, and dynamic resistance of 15 Ω at 5 mA test current - used in precision reference and overvoltage protection circuits for industrial control modules.
For engineers reviewing the HZS7B1TA-E datasheet, HZS7B1TA-E pinout, HZS7B1TA-E application, or HZS7B1TA-E equivalent, this device serves as a stable, low-leakage voltage reference in linear regulators, sensor biasing networks, and analog front-end protection where tight tolerance (±0.4 V), low temperature coefficient (−0.04 %/°C), and 5 mm-pitch auto-insertion compatibility are required.
Technical Context
The HZS7B1TA-E operates as a two-terminal shunt regulator with cathode-anode polarity, optimized for DC-stabilized operation per JEITA GRZZ0002ZC-A package specification. Its junction temperature rating of 200°C supports high-reliability industrial ambient conditions up to +125°C with derated power dissipation.
It exhibits low reverse leakage (≤1 µA at VR = 5 V), low zener impedance (15 Ω at IZ = 5 mA), and a negative temperature coefficient (−0.04 %/°C) typical for 7–8 V Zener devices - enabling predictable drift compensation in temperature-sensitive references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V min to 7.9 V max at IZ = 5 mA - defines regulated output range for reference design |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous power handling before thermal derating |
| Dynamic Resistance (rd) | 15 Ω at IZ = 5 mA - determines regulation stiffness and load-induced voltage variation |
| Reverse Leakage (IR) | ≤1 µA at VR = 5 V - ensures minimal quiescent current in standby or low-current bias networks |
| Junction Temperature (Tj) | 200°C maximum - enables operation in high-ambient industrial environments with appropriate PCB copper area |
| Package | MHD (JEITA GRZZ0002ZC-A) - 5 mm pitch, axial lead, paper phenol body for automated insertion |
Pinout & Package
Package: MHD (JEITA GRZZ0002ZC-A), axial-leaded, 5 mm pitch, paper phenolic body, mass 0.084 g, dimensions L = 26.0 mm, φD = 2.0 mm, E = 2.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Regulated output node | Connected to positive rail; sinks current to maintain VZ across load |
| 2 (Anode) | Reference ground node | Connected to circuit common; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 15 Ω at 5 mA - improves line/load regulation accuracy in feedback references |
| Wide zener voltage spectrum | 7.5–7.9 V range - allows binning-based selection for tighter system-level tolerance |
| High junction temperature rating | 200°C - supports reliable operation in enclosed industrial enclosures without forced cooling |
| 5 mm pitch compatibility | Designed for high-speed automatic insertion - reduces assembly cost in volume production |
| Low leakage current | ≤1 µA at 5 V reverse bias - minimizes error in high-impedance bias networks and sensor references |
Applications
| Industrial Power Monitoring | Automotive Sensor Biasing |
|---|---|
|
Use Scenario: Monitoring 12 V battery rail in PLC I/O modules with ±5% tolerance. IC Role / Device Role / Timing Role: Shunt voltage reference for ADC input scaling and overvoltage clamp. Use Value: Maintains 7.5–7.9 V reference under 5 mA load with <15 Ω impedance, ensuring ≤0.075 V full-scale error. |
Use Scenario: Providing stable bias to NTC thermistor bridges in engine coolant sensors. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric measurement against 5 V MCU supply. Use Value: Low 1 µA leakage avoids loading high-impedance bridge nodes; −0.04 %/°C TC enables <±0.5% drift over −40°C to +125°C. |
| Medical Instrumentation Reference | Consumer Audio Power Sequencing |
|
Use Scenario: Generating fixed 7.5 V reference for op-amp gain-setting in portable ECG front-ends. IC Role / Device Role / Timing Role: Low-noise DC reference source for analog signal conditioning chain. Use Value: 400 mW Pd and 200°C Tj allow safe operation in sealed enclosures; low rd suppresses ripple coupling into sensitive analog paths. |
Use Scenario: Controlling power-on reset timing via RC delay referenced to stable 7.5 V threshold. IC Role / Device Role / Timing Role: Voltage threshold element in discrete reset generator circuit. Use Value: Tight 7.5–7.9 V tolerance ensures consistent 100 ms delay across units; lake-blue cathode band enables visual polarity verification during manual assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A (ON Semiconductor) | Zener voltage 5.1 V ±5%, rd = 17 Ω, Pd = 1 W, DO-41 package | Higher power, lower voltage, larger DO-41 footprint - unsuitable for 5 mm pitch auto-insertion | Select only if higher power margin and 5.1 V reference are required; requires PCB layout change |
| BZX55C7V5 (Vishay) | Zener voltage 7.5 V ±5%, rd = 15 Ω, Pd = 500 mW, DO-35 package | Same VZ grade but DO-35 axial leads (2.5 mm pitch); higher Pd but incompatible with MHD insertion tooling | Use when higher power headroom is needed and 2.5 mm pitch is acceptable; not drop-in for MHD footprint |
Compared with HZS7B1TA-E, the 1N4733A offers higher power but mismatched voltage and package, while BZX55C7V5 matches voltage and impedance but uses DO-35 instead of MHD - neither is pin-compatible, and both require mechanical redesign for automated assembly.
Availability
HZS7B1TA-E is available at Aetrix Electronics and suitable for industrial power monitoring, automotive sensor biasing, medical instrumentation reference, and consumer audio power sequencing requiring stable component supply, long-term lifecycle support, and JEDEC-compliant traceability.
Supply support for HZS7B1TA-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 for industrial, automotive, and infrastructure markets.
HZS7B1TA-E belongs to the HZS Series silicon planar Zener diodes - engineered for stabilized power supply applications requiring low leakage, low impedance, and high-temperature reliability in cost-sensitive, high-volume manufacturing.
FAQ
What is the exact zener voltage range for HZS7B1TA-E?
The HZS7B1TA-E has a guaranteed zener voltage range of 7.5 V minimum to 7.9 V maximum when tested at IZ = 5 mA and Ta = 25°C, as specified in the Renesas REJ03G0184-0500 Rev.5.00 datasheet. This corresponds to Grade B3 within the HZS7 family and reflects factory binning for tight regulation tolerance.
Does HZS7B1TA-E support automatic insertion in SMT or through-hole lines?
HZS7B1TA-E uses the MHD package (JEITA GRZZ0002ZC-A) with 5 mm pitch axial leads, explicitly designed for high-speed automatic through-hole insertion - not surface-mount. It is incompatible with SMT reflow or pick-and-place systems, and requires wave solder or selective soldering processes.
What is the maximum reverse leakage current for HZS7B1TA-E?
The maximum reverse leakage current for HZS7B1TA-E is 1 µA at VR = 5 V and Ta = 25°C, per the Electrical Characteristics table on page 2 of the Renesas datasheet. This low IR value ensures minimal error contribution in high-impedance reference and bias networks.
Can HZS7B1TA-E be used in automotive applications?
HZS7B1TA-E is classified as a "Standard" quality grade device per Renesas documentation and is intended for industrial, office, and consumer equipment - not automotive-grade systems. It lacks AEC-Q200 qualification and is not recommended for under-hood or safety-critical vehicle subsystems without additional validation.
What is the thermal derating behavior of HZS7B1TA-E above 25°C?
HZS7B1TA-E follows standard linear derating: power dissipation decreases from 400 mW at 25°C to zero at 175°C ambient, as shown in Figure 3 of the datasheet. At 100°C ambient, usable Pd is approximately 200 mW - requiring adequate PCB copper area and airflow for sustained operation.
HZS7B1TA-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:
- -
HZS7B1TA-E FAQ
1.How can I place an order for HZS7B1TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7B1TA-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 HZS7B1TA-E reliable?
The price and inventory of HZS7B1TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7B1TA-E is usually 5 days.
3.What payment methods are accepted for HZS7B1TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7B1TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7B1TA-E?
HZS7B1TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7B1TA-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 HZS7B1TA-E?
For technical support, including HZS7B1TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7B1TA-E requirements.
6.How does Aetrix verify that HZS7B1TA-E is sourced from the original manufacturer or authorized distributors?
All HZS7B1TA-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 HZS7B1TA-E meets industry standards.
7.What is the process for return or replacement of HZS7B1TA-E?
All HZS7B1TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7B1TA-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 HZS7B1TA-E part is unused and in its original packaging.
Return procedure for HZS7B1TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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