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Renesas HZS7A1L-JTA
- Part No.:
- HZS7A1L-JTA
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7A1L-JTA.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
HZS7A1L-JTA from ROHM Semiconductor is a silicon epitaxial planar Zener diode designed for precision voltage regulation in stabilized power supplies, with a nominal zener voltage of 6.3–6.6 V, maximum power dissipation of 400 mW, dynamic resistance of ≤15 Ω at 5 mA, and reverse leakage current ≤1 µA at 3.5 V. It supports high-speed automatic insertion on 5 mm-pitch PCBs.
For engineers reviewing the HZS7A1L-JTA datasheet, HZS7A1L-JTA pinout, HZS7A1L-JTA application, or HZS7A1L-JTA equivalent, key selection criteria include zener voltage tolerance (±0.3 V), low dynamic impedance for stable regulation under load transients, thermal stability up to 200°C junction temperature, and compatibility with automated assembly processes.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining a stable reference voltage across its cathode-anode terminals when reverse-biased above its breakdown threshold. Its epitaxial planar construction ensures consistent zener characteristics, low leakage (<1 µA), and tight voltage distribution within grade A1 (6.3–6.6 V).
The HZS7A1L-JTA is characterized at 25°C with test conditions of IZ = 5 mA for VZ, VR = 3.5 V for IR, and IZ = 5 mA for rd, and exhibits a negative temperature coefficient typical of low-voltage Zeners in this range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.3–6.6 V at IZ = 5 mA - defines regulated output voltage window for feedback or reference circuits |
| Dynamic Resistance (rd) | ≤15 Ω at IZ = 5 mA - ensures minimal output voltage shift under varying load current |
| Reverse Leakage (IR) | ≤1 µA at VR = 3.5 V - guarantees low standby power loss in bias networks |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact SMD-compatible through-hole packages |
| Junction Temperature (Tj) | −55 to +200°C - enables use in industrial and automotive under-hood environments |
| Package Pitch | 5 mm - compatible with standard high-speed axial component insertion equipment |
Pinout & Package
Package: DO-35 (glass axial leaded, 2.5 mm diameter × 4.5 mm length), cathode identified by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to higher potential node; reverse-bias terminal where regulated voltage develops |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower potential; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤15 Ω enables fast transient response and stable regulation in feedback loops |
| Wide zener voltage spectrum | 6.3–6.6 V range meets common 5 V/6 V rail reference needs with grade-specific tolerance |
| High reliability construction | Silicon epitaxial planar process ensures repeatable breakdown characteristics and long-term stability |
| Automated assembly compatibility | 5 mm pitch and DO-35 outline support high-throughput placement without manual handling |
Applications
| Industrial Power Supply Reference | Automotive Sensor Biasing |
|---|---|
Use Scenario: Providing stable 6.5 V reference for op-amp comparators in 24 V industrial PLC power rails. IC Role / Device Role / Timing Role: Shunt voltage reference regulating error amplifier input in isolated DC-DC feedback network. Use Value: Low 15 Ω dynamic resistance minimizes output drift under 1–10 mA load variation, ensuring ±0.5% regulation accuracy. | Use Scenario: Biasing NTC thermistors in engine coolant temperature sensors operating from 12 V battery supply. IC Role / Device Role / Timing Role: Precision voltage clamp establishing known reference point for analog sensor signal conditioning. Use Value: Tight 6.3–6.6 V tolerance and <1 µA leakage maintain sensor linearity across −40°C to +150°C ambient. |
| Consumer AC-DC Adapter Feedback | Medical Equipment Voltage Monitoring |
Use Scenario: Secondary-side voltage sensing in flyback converters powering USB-C PD adapters. IC Role / Device Role / Timing Role: Zener-based optocoupler bias source controlling primary-side PWM duty cycle via isolation barrier. Use Value: 400 mW power rating sustains continuous conduction without thermal derating at 50°C board temperature. | Use Scenario: Overvoltage detection threshold in battery-powered portable ECG monitors. IC Role / Device Role / Timing Role: Clamping comparator reference to trigger shutdown if Li-ion charger exceeds 6.6 V. Use Value: Guaranteed 200°C junction rating allows safe operation during fault conditions without catastrophic failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Zener voltage 5.6 V ±5%, Pd = 1 W, rd = 5 Ω, DO-41 package | Higher power and lower impedance but different voltage grade; requires layout change for 5.6 V vs. 6.5 V reference | Select only if system design accommodates 5.6 V reference and higher thermal mass |
| BZX55C6V2 | Zener voltage 6.2 V ±5%, Pd = 500 mW, rd = 10 Ω, DO-35 package | Near-identical form factor and voltage center, but looser ±5% tolerance vs. HZS7A1L-JTA's ±0.3 V grade A1 | Prefer HZS7A1L-JTA where tight voltage matching is critical for precision feedback |
Compared with 1N4734A and BZX55C6V2, the HZS7A1L-JTA offers tighter voltage tolerance (±0.3 V) and lower leakage (<1 µA), making it optimal for high-accuracy reference designs where DO-35 footprint and 5 mm pitch are required.
Availability
HZS7A1L-JTA is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor modules, and medical monitoring devices requiring stable component supply with full traceability and long-lifecycle support.
Supply support for HZS7A1L-JTA 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
ROHM Semiconductor is a Japanese semiconductor manufacturer specializing in analog, power, and sensor solutions for automotive, industrial, and consumer markets.
The HZS Series is part of ROHM's discrete Zener diode portfolio, engineered for high-precision voltage stabilization in space-constrained, high-reliability power systems.
FAQ
What is the exact zener voltage range specified for HZS7A1L-JTA?
The HZS7A1L-JTA has a guaranteed zener voltage range of 6.3 V to 6.6 V at test current IZ = 5 mA, corresponding to grade A1 in the HZS Series. This tight ±0.3 V tolerance is confirmed in the official ROHM datasheet ADE-208-120A(Z) Rev 1, page 3, and distinguishes it from broader-tolerance alternatives like BZX55C6V2.
Does HZS7A1L-JTA support automated PCB assembly?
Yes, HZS7A1L-JTA uses a DO-35 package with 5 mm lead pitch, explicitly optimized for high-speed automatic insertion equipment as stated in the "Ordering Information" section of the ROHM datasheet. Its axial lead geometry and standardized dimensions ensure reliable feeding and placement without manual intervention.
What is the maximum allowable reverse leakage current for HZS7A1L-JTA?
The maximum reverse leakage current for HZS7A1L-JTA is 1 µA at VR = 3.5 V, per the Electrical Characteristics table on page 3 of the ROHM datasheet ADE-208-120A(Z). This low leakage supports energy-efficient bias networks in battery-powered and always-on systems.
Can HZS7A1L-JTA be used in automotive under-hood applications?
Yes, HZS7A1L-JTA is rated for junction temperatures up to +200°C and storage temperatures from −55°C to +175°C, meeting extended thermal requirements for non-safety-critical automotive under-hood modules such as cabin temperature sensors and body control unit auxiliary rails.
What is the dynamic resistance specification for HZS7A1L-JTA and why does it matter?
HZS7A1L-JTA has a maximum dynamic resistance of 15 Ω at IZ = 5 mA. This parameter directly determines how much the output voltage shifts under changing load current - lower rd means better regulation stability, especially in feedback paths of switching regulators where ripple rejection is critical.
HZS7A1L-JTA 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:
- -
HZS7A1L-JTA FAQ
1.How can I place an order for HZS7A1L-JTA through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7A1L-JTA 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 HZS7A1L-JTA reliable?
The price and inventory of HZS7A1L-JTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7A1L-JTA is usually 5 days.
3.What payment methods are accepted for HZS7A1L-JTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7A1L-JTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7A1L-JTA?
HZS7A1L-JTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7A1L-JTA 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 HZS7A1L-JTA?
For technical support, including HZS7A1L-JTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7A1L-JTA requirements.
6.How does Aetrix verify that HZS7A1L-JTA is sourced from the original manufacturer or authorized distributors?
All HZS7A1L-JTA 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 HZS7A1L-JTA meets industry standards.
7.What is the process for return or replacement of HZS7A1L-JTA?
All HZS7A1L-JTA units undergo pre-shipment inspection (PSI). If there is an issue with HZS7A1L-JTA, 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 HZS7A1L-JTA part is unused and in its original packaging.
Return procedure for HZS7A1L-JTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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