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Renesas HZS7A1J-E
- Part No.:
- HZS7A1J-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7A1J-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
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Inventory:8,000
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Product details
Overview
HZS7A1J-E 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 at 5 mA, dynamic resistance of 15 Ω max, reverse current ≤1 µA at 3.5 V, and 400 mW power dissipation - used in low-noise reference circuits and industrial sensor biasing.
For engineers reviewing the HZS7A1J-E datasheet, HZS7A1J-E pinout, HZS7A1J-E application, or HZS7A1J-E equivalent, key selection criteria include verified zener voltage tolerance (±5% grade A1), low-temperature coefficient (−0.05%/°C typical near 6.5 V), DC-tested stability, and compatibility with 5 mm-pitch automated insertion.
Technical Context
This discrete Zener diode operates in reverse breakdown mode with tightly controlled VZ dispersion across production lots, leveraging epitaxial planar construction to minimize leakage and ensure repeatable regulation under DC bias. Its low dynamic impedance (15 Ω max) supports stable output in low-current reference paths.
The device exhibits a negative temperature coefficient near 6.5 V (−0.05%/°C), enabling predictable drift compensation in analog front-ends. Absolute maximum ratings include 200°C junction temperature and −55°C to +175°C storage range - suitable for extended industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.3–6.6 V at IZ = 5 mA - defines regulated output level in shunt reference designs |
| Dynamic Resistance (rd) | ≤15 Ω at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Current (IR) | ≤1 µA at VR = 3.5 V - guarantees low standby power loss in battery-backed circuits |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets thermal derating limit for PCB layout and heatsinking |
| Junction Temperature (Tj) | 200°C max - enables operation in high-ambient industrial enclosures without forced cooling |
| Temperature Coefficient | −0.05%/°C typical at ~6.5 V - allows predictable VZ drift modeling over temperature |
Pinout & Package
Package: DO-35 (glass axial leaded, 2.5 mm diameter × 4.5 mm length, 5 mm pitch compatible).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode band) | Zener cathode | Connected to higher potential node; reverse-biased terminal for regulation |
| 2 (Anode) | Zener anode | Connected to circuit ground or lower potential; completes shunt path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low leakage current | IR ≤1 µA at 3.5 V enables microamp-level standby operation in energy-sensitive systems |
| Tight VZ tolerance (Grade A1) | ±5% min–max spread ensures consistent regulation without post-production trimming |
| DC-tested zener characteristics | Guarantees stable performance in static bias applications without AC ripple sensitivity |
| 5 mm-pitch insertion compatibility | Supports high-throughput automated assembly on standard SMT-compatible through-hole lines |
Applications
| Industrial Sensor Reference | Low-Power Microcontroller Reset |
|---|---|
Use Scenario: Providing stable 6.5 V reference for analog-to-digital conversion in pressure transducers. IC Role / Device Role / Timing Role: Shunt voltage reference regulating excitation voltage for bridge sensors. Use Value: 15 Ω rd minimizes code shift under varying sensor load currents. | Use Scenario: Generating precise reset threshold for 3.3 V MCU supply monitoring. IC Role / Device Role / Timing Role: Zener-based comparator input reference in supervisor IC interface. Use Value: ≤1 µA IR avoids loading weak LDO outputs during brown-out detection. |
| Programmable Logic Biasing | Automotive Body Control Module |
Use Scenario: Setting bias point for configurable logic gate thresholds in FPGA configuration circuits. IC Role / Device Role / Timing Role: Precision DC reference for level-shifting interfaces. Use Value: Tight ±5% VZ tolerance eliminates need for external calibration resistors. | Use Scenario: Regulating auxiliary 6.5 V rail for LIN transceiver bias in BCM subassemblies. IC Role / Device Role / Timing Role: Primary shunt regulator in non-isolated secondary supply stage. Use Value: 200°C Tj rating supports under-hood placement without thermal derating penalties. |
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 |
|---|---|---|---|
| MMBZ5231B (ON Semiconductor) | Surface-mount SOD-123, VZ = 5.1 V, Pd = 350 mW, rd = 17 Ω | Lower voltage, smaller package, reduced power handling | Preferred for space-constrained PCBs where 5.1 V regulation suffices |
| BZX55C6V2 (Vishay) | Through-hole DO-35, VZ = 6.2 V, Pd = 500 mW, rd = 10 Ω, tighter 5% tolerance | Higher power margin, slightly lower VZ, lower rd | Selected when 500 mW headroom or sub-10 Ω impedance is required |
Compared with MMBZ5231B and BZX55C6V2, the HZS7A1J-E offers optimized 6.3–6.6 V regulation with industry-standard DO-35 mechanical fit and verified 400 mW/15 Ω performance - balancing precision, thermal robustness, and legacy board compatibility.
Availability
HZS7A1J-E is available at Aetrix Electronics and suitable for industrial sensor references, low-power microcontroller reset circuits, and automotive body control modules requiring stable component supply across multi-year production cycles.
Supply support for HZS7A1J-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
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 portfolio engineered for high-reliability voltage stabilization in cost-sensitive, high-volume power management applications - emphasizing low leakage, tight VZ grading, and automated assembly readiness.
FAQ
What is the exact zener voltage range for HZS7A1J-E?
The HZS7A1J-E has a guaranteed zener voltage range of 6.3 V to 6.6 V when tested at IZ = 5 mA and Ta = 25°C. This corresponds to Grade A1 tolerance per the HZS Series datasheet (ADE-208-120A(Z) Rev 1), and the device is DC-tested to ensure compliance. The HZS7A1J-E does not exhibit significant hysteresis or AC-dependent variation.
Is HZS7A1J-E suitable for surface-mount assembly?
No, the HZS7A1J-E uses a DO-35 glass axial package with radial leads intended for through-hole mounting and 5 mm-pitch automatic insertion. It is not compatible with reflow soldering or pick-and-place SMT processes. For surface-mount alternatives, consider the MMBZ5231B or similar SOD-123 devices - but note that HZS7A1J-E itself requires wave or selective soldering.
What is the maximum reverse current specification for HZS7A1J-E?
The HZS7A1J-E specifies a maximum reverse current (IR) of 1 µA at VR = 3.5 V and Ta = 25°C. This low leakage supports energy-efficient designs, especially in battery-powered or always-on monitoring circuits. The value is measured under DC conditions and remains stable across its rated storage temperature range.
Does HZS7A1J-E have a specified temperature coefficient?
Yes, the HZS7A1J-E exhibits a typical temperature coefficient of −0.05%/°C near its nominal 6.5 V zener voltage, as shown in Figure 2 of the HZS Series datasheet. This negative coefficient is characteristic of Zener diodes in the 6–7 V range and enables predictable drift modeling in precision analog circuits using the HZS7A1J-E.
Can HZS7A1J-E replace BZX55C6V2 in existing designs?
The HZS7A1J-E shares the DO-35 package and similar 6.2–6.6 V regulation range with BZX55C6V2, but it is not a direct drop-in replacement due to differences in dynamic resistance (15 Ω vs. 10 Ω) and power rating (400 mW vs. 500 mW). Designers must verify thermal margin and impedance sensitivity before substituting HZS7A1J-E in circuits originally qualified with BZX55C6V2.
HZS7A1J-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:
- -
HZS7A1J-E FAQ
1.How can I place an order for HZS7A1J-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7A1J-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 HZS7A1J-E reliable?
The price and inventory of HZS7A1J-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7A1J-E is usually 5 days.
3.What payment methods are accepted for HZS7A1J-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7A1J-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7A1J-E?
HZS7A1J-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7A1J-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 HZS7A1J-E?
For technical support, including HZS7A1J-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7A1J-E requirements.
6.How does Aetrix verify that HZS7A1J-E is sourced from the original manufacturer or authorized distributors?
All HZS7A1J-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 HZS7A1J-E meets industry standards.
7.What is the process for return or replacement of HZS7A1J-E?
All HZS7A1J-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7A1J-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 HZS7A1J-E part is unused and in its original packaging.
Return procedure for HZS7A1J-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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