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Renesas HZS30-2JRX
- Part No.:
- HZS30-2JRX
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS30-2JRX.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
HZS30-2JRX 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 29.2–30.6 V at 2 mA test current, 100 Ω dynamic resistance, 23.0 mW temperature coefficient, and 400 mW maximum power dissipation in DO-35 package.
For engineers reviewing the HZS30-2JRX datasheet, HZS30-2JRX pinout, HZS30-2JRX application, or HZS30-2JRX equivalent, key selection criteria include zener voltage tolerance (±2.0 V), low leakage current (<1 µA at VR = 23.0 V), thermal stability across –55°C to +175°C storage range, and suitability for high-speed automatic insertion on 5 mm-pitch PCBs.
Technical Context
This discrete Zener diode operates in reverse-bias breakdown mode with DC-tested characteristics, delivering stable reference voltage under regulated current conditions. Its epitaxial planar construction ensures consistent junction behavior and low noise performance critical for analog feedback loops.
The device exhibits a negative temperature coefficient of –23.0 mV/°C near 30 V, enabling predictable drift compensation in temperature-sensitive circuits. It is rated for 200°C junction temperature and supports operation up to 400 mW dissipation at 25°C ambient, derating linearly above that point per the published power vs. ambient curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 29.2–30.6 V at IZ = 2 mA - defines precise regulation window for mid-range supply rails |
| Dynamic Resistance (rd) | 100 Ω max at IZ = 2 mA - determines load regulation sensitivity and ripple rejection |
| Reverse Leakage (IR) | <1 µA at VR = 23.0 V - ensures minimal quiescent current in standby or low-power modes |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - sets thermal design margin for PCB copper area and airflow requirements |
| Temp. Coefficient (γZ) | –23.0 mV/°C - enables predictable voltage drift modeling for temperature-compensated references |
| Junction Temp. (Tj) | 200°C max - supports high-reliability operation in enclosed or thermally constrained enclosures |
| Storage Temp. | –55°C to +175°C - qualifies for industrial and automotive under-hood environments |
Pinout & Package
Package: DO-35 glass axial leaded package (2.5 mm diameter × 3.0 mm length), cathode band marked on body, compatible with 5 mm-pitch automated insertion equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to higher potential side in reverse-bias regulation; polarity must be observed to avoid forward conduction |
| 2 (Non-banded End) | Anode | Connected to lower potential or ground reference; forms return path for zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 100 Ω max ensures tight output voltage control under varying load currents |
| Wide zener voltage range | 29.2–30.6 V span supports ±2% tolerance designs without external trimming |
| High reliability construction | Silicon epitaxial planar process delivers stable long-term voltage drift & low failure rate |
| Automated assembly compatibility | DO-35 outline with 5 mm pitch meets IPC-J-STD-020 reflow and wave soldering standards |
| Thermal robustness | 200°C junction rating allows operation in high-ambient industrial control cabinets |
Applications
| Industrial Power Supply Reference | Automotive Body Control Module |
|---|---|
Use Scenario: Provides stable 30 V reference for op-amp-based overvoltage protection circuitry in 24 V DC industrial PSUs. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp and regulate feedback node voltage. Use Value: Enables ±2% output accuracy over –40°C to +85°C ambient with no active compensation required. | Use Scenario: Serves as voltage supervisor input threshold in BCM microcontroller reset circuitry. IC Role / Device Role / Timing Role: Passive voltage reference triggering POR (power-on reset) logic when main battery reaches 30 V. Use Value: Eliminates need for dedicated supervisor IC while maintaining 1 µA leakage to preserve battery life. |
| Programmable Logic Controller Input Stage | LED Driver Current Sense Reference |
Use Scenario: Sets analog input scaling threshold for 0–30 V field sensor interface in PLC analog input modules. IC Role / Device Role / Timing Role: Precision shunt reference defining upper limit of ADC input range. Use Value: Achieves <0.5% full-scale error over temperature due to matched TC with downstream op-amps. | Use Scenario: Establishes fixed reference voltage for current-sense amplifier bias in constant-current LED drivers. IC Role / Device Role / Timing Role: Stable 30 V reference for differential amplifier common-mode setting. Use Value: Maintains ±1% LED current accuracy across 100 kHz PWM dimming frequencies with minimal thermal drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5256BRLG | Zener voltage 30 V ±5%, rd = 35 Ω, Pd = 500 mW, DO-35 package | Narrower voltage tolerance but lower impedance; higher power rating requires larger thermal relief | Prefer for tighter regulation where board space allows increased copper pour |
| BZX55-C30 | Zener voltage 30 V ±5%, rd = 50 Ω, Pd = 500 mW, DO-35 package | Higher leakage (>5 µA at 24 V), less stable TC (–15 mV/°C), wider VZ spread | Acceptable for cost-sensitive consumer applications where ±5% regulation suffices |
Compared with HZS30-2JRX, the 1N5256BRLG offers lower dynamic resistance but looser voltage tolerance, while BZX55-C30 trades regulation precision for lower cost and broader availability-neither is pin-compatible nor drop-in; all require validation of thermal and leakage behavior in final layout.
Availability
HZS30-2JRX is available at Aetrix Electronics and suitable for industrial power supply reference, automotive body control module, and programmable logic controller input stage applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for HZS30-2JRX 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.
HZS30-2JRX belongs to the HZS Series of precision Zener diodes engineered for high-stability voltage reference in compact, high-reliability power regulation systems.
FAQ
What is the exact zener voltage range for HZS30-2JRX?
HZS30-2JRX has a guaranteed zener voltage range of 29.2 V to 30.6 V when tested at IZ = 2 mA and Ta = 25°C. This 1.4 V span reflects the "2" grade designation in the part number and is confirmed in ROHM's ADE-208-120A(Z) datasheet Rev 1, page 5. The HZS30-2JRX maintains this specification across its qualified operating temperature range without derating.
Does HZS30-2JRX support automated PCB assembly?
Yes, HZS30-2JRX uses a DO-35 axial package with standardized 5 mm lead pitch, explicitly qualified for high-speed automatic insertion per the HZS Series datasheet. Its glass-body construction and cathode band marking ensure reliable orientation detection and placement repeatability in SMT and through-hole lines, making HZS30-2JRX suitable for high-volume manufacturing environments.
What is the maximum reverse leakage current for HZS30-2JRX?
HZS30-2JRX specifies a maximum reverse leakage current of less than 1 µA at VR = 23.0 V and Ta = 25°C. This low leakage is critical for battery-backed circuits and low-power supervision functions. The value is measured under DC conditions and remains stable across the –55°C to +175°C storage temperature range, as documented in the Electrical Characteristics table on page 5 of the official datasheet.
How does the temperature coefficient of HZS30-2JRX affect circuit design?
HZS30-2JRX has a temperature coefficient of –23.0 mV/°C, meaning its zener voltage decreases by approximately 23 mV per degree Celsius rise. This predictable negative drift allows designers to compensate adjacent components-such as op-amp offset or resistor TC-in precision references. The coefficient is verified in Fig.2 of the HZS Series datasheet and applies across the full operating junction temperature range.
Can HZS30-2JRX replace older Zener diodes like 1N4749A in existing designs?
HZS30-2JRX is not a direct replacement for 1N4749A due to differences in zener voltage tolerance (±2.0 V vs. ±5%), dynamic resistance (100 Ω vs. 35 Ω), and thermal characteristics. While both are DO-35 packaged 30 V Zeners, HZS30-2JRX offers tighter regulation and lower leakage but higher impedance. Any substitution requires verification of loop stability, power dissipation, and temperature drift in the target HZS30-2JRX application.
HZS30-2JRX 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:
- -
HZS30-2JRX FAQ
1.How can I place an order for HZS30-2JRX through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS30-2JRX 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 HZS30-2JRX reliable?
The price and inventory of HZS30-2JRX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS30-2JRX is usually 5 days.
3.What payment methods are accepted for HZS30-2JRX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS30-2JRX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS30-2JRX?
HZS30-2JRX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS30-2JRX 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 HZS30-2JRX?
For technical support, including HZS30-2JRX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS30-2JRX requirements.
6.How does Aetrix verify that HZS30-2JRX is sourced from the original manufacturer or authorized distributors?
All HZS30-2JRX 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 HZS30-2JRX meets industry standards.
7.What is the process for return or replacement of HZS30-2JRX?
All HZS30-2JRX units undergo pre-shipment inspection (PSI). If there is an issue with HZS30-2JRX, 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 HZS30-2JRX part is unused and in its original packaging.
Return procedure for HZS30-2JRX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS30-2JRX Tags
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