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Renesas HZS30-3TD-E
- Part No.:
- HZS30-3TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS30-3TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:45,000
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Product details
Overview
HZS30-3TD-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in stabilized power supplies, with a nominal zener voltage of 30.2–31.6 V at 2 mA test current, 400 mW maximum power dissipation, and dynamic resistance of 23.0 Ω. It operates within −55°C to +175°C storage temperature range and is qualified for industrial-grade applications including office equipment and test instrumentation.
For engineers reviewing the HZS30-3TD-E datasheet, HZS30-3TD-E pinout, HZS30-3TD-E application, or HZS30-3TD-E equivalent, this device serves as a low-leakage, low-impedance voltage reference in DC bias networks, feedback loops of linear regulators, and overvoltage protection circuits where stable 30 V clamping is required.
Technical Context
The HZS30-3TD-E employs a silicon planar junction structure optimized for tight zener voltage tolerance and low dynamic impedance. Its 23.0 Ω dynamic resistance at 2 mA ensures minimal output voltage variation under load changes, supporting stable regulation in low-power analog and digital supply rails.
Zener voltage temperature coefficient is −0.04 %/°C (−40 mV/°C) near 30 V, enabling predictable drift behavior in ambient temperature variations. The device is rated for 200°C junction temperature and features a 5 mm-pitch compatible MHD package for high-speed automatic insertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30.2–31.6 V at IZ = 2 mA - defines precise clamping threshold for 30 V reference designs |
| Dynamic Resistance (rd) | 23.0 Ω at IZ = 2 mA - ensures <1% output deviation per 0.5 mA load change |
| Power Dissipation (Pd) | 400 mW - supports continuous operation up to 13.3 mA at 30 V without derating at 25°C |
| Reverse Current (IR) | ≤1 µA at VR = 0.5×VZ - guarantees negligible leakage in high-impedance bias networks |
| Junction Temperature (Tj) | 200°C - enables reliable operation in thermally constrained PCB layouts |
| Storage Temperature | −55°C to +175°C - suitable for extended environmental qualification in industrial systems |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), molded plastic with axial leads, 2.0 mm diameter body, 26.0 mm lead length, 5 mm pitch - optimized for automated through-hole insertion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener cathode terminal | Connected to higher potential node; reverse-biased operation requires positive voltage applied here relative to anode |
| 2 (Anode) | Zener anode terminal | Connected to circuit ground or lower potential; completes reverse-bias path for voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 23.0 Ω enables stable 30 V reference under ±1 mA load transients |
| Wide zener voltage spectrum | Part of HZS Series covering 1.6–38 V - allows single-supplier sourcing across multiple voltage rails |
| High reliability construction | Silicon planar junction with 200°C max junction temperature - supports long-term stability in thermal cycling environments |
| Automated assembly compatibility | MHD package with 5 mm pitch - eliminates manual placement in high-volume manufacturing |
Applications
| Industrial Power Monitoring | Linear Regulator Feedback |
|---|---|
|
Use Scenario: Monitoring 30 V DC bus voltage in programmable logic controller (PLC) backplanes using resistive divider into ADC input. IC Role / Device Role / Timing Role: Precision voltage reference providing known scaling factor for analog-to-digital conversion. Use Value: 30.2–31.6 V tolerance and 23.0 Ω rd ensure <±0.5% measurement error across temperature and load. |
Use Scenario: Setting output voltage of adjustable LDO (e.g., μA78L30) via resistor divider tied to feedback pin. IC Role / Device Role / Timing Role: Stable reference node defining regulated output voltage in closed-loop control. Use Value: Low 1 µA leakage prevents feedback network error; 400 mW rating accommodates worst-case divider current. |
| Overvoltage Clamp Circuit | Microcontroller Reset Threshold |
|
Use Scenario: Protecting 3.3 V microcontroller I/O pins from accidental 30 V transients on shared signal lines. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting voltage excursion above safe operating range. Use Value: 23.0 Ω rd and 400 mW Pd allow absorption of 13.3 mA surge without breakdown degradation. |
Use Scenario: Generating clean 30 V reset pulse for high-voltage peripheral initialization in embedded motor drives. IC Role / Device Role / Timing Role: Trigger-level reference for dedicated reset supervisor IC (e.g., MAX809). Use Value: Tight 30.2–31.6 V tolerance ensures deterministic reset timing independent of supply ripple. |
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 |
|---|---|---|---|
| 1N5257B (ON Semiconductor) | Zener voltage 30 V ±5%, rd = 35 Ω, Pd = 500 mW, DO-35 package | Higher dynamic resistance increases regulation error under load; larger DO-35 footprint vs. MHD | Select when higher power margin is needed and board space permits larger package |
| BZX55-C30 (Vishay) | Zener voltage 30 V ±5%, rd = 30 Ω, Pd = 500 mW, DO-35 package | Looser 5% tolerance vs. HZS30-3TD-E's tighter grade-based spec; same thermal limits | Choose for cost-sensitive designs where ±5% VZ is acceptable and DO-35 is already in BOM |
Compared with 1N5257B and BZX55-C30, the HZS30-3TD-E offers superior voltage accuracy (30.2–31.6 V vs. 28.5–31.5 V), lower dynamic impedance (23.0 Ω), and MHD packaging optimized for automated insertion-making it preferred for high-reliability industrial power monitoring and precision feedback networks.
Availability
HZS30-3TD-E is available at Aetrix Electronics and suitable for industrial automation, test and measurement equipment, and office electronics requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HZS30-3TD-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 global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and enterprise applications.
The HZS Series is part of Renesas' discrete portfolio targeting precision voltage stabilization in power supply subsystems-designed specifically for high-stability, low-drift reference and clamping functions in industrial-grade equipment.
FAQ
What is the exact zener voltage range specified for HZS30-3TD-E?
The HZS30-3TD-E has a guaranteed zener voltage range of 30.2 V to 31.6 V when tested at IZ = 2 mA and Ta = 25°C. This specification is defined in the "HZS30" row, "-3" grade column of the Electrical Characteristics table on page 4 of the REJ03G0184-0500 datasheet. The -3 grade denotes the tightest tolerance bin within the HZS30 family, confirming its suitability for precision reference applications where ±2.5% deviation is unacceptable.
Is HZS30-3TD-E RoHS compliant?
Yes, HZS30-3TD-E complies with the EU RoHS Directive, as confirmed by Renesas Electronics' environmental compliance documentation and material declarations. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits. Renesas explicitly states RoHS conformance in its product change notifications and environmental data sheets applicable to the HZS Series.
What is the maximum continuous reverse current HZS30-3TD-E can handle without degradation?
HZS30-3TD-E supports a maximum continuous zener current of 13.3 mA at 25°C ambient, calculated from its 400 mW power rating and nominal 30 V zener voltage (IZmax = 400 mW ÷ 30 V ≈ 13.3 mA). Derating is required above 25°C per the Power Dissipation vs. Ambient Temperature curve on page 5; at 70°C, allowable current drops to ~8.5 mA. Exceeding these limits risks thermal runaway and permanent parameter shift.
Does HZS30-3TD-E have a specified zener voltage temperature coefficient?
Yes, the zener voltage temperature coefficient (γZ) for HZS30-3TD-E is −0.04 %/°C (or −40 mV/°C), as shown in Figure 2 ("Temperature Coefficient vs. Zener voltage") on page 5 of the datasheet. This negative coefficient indicates that VZ decreases by approximately 12 mV per 30°C rise in junction temperature-critical for predicting reference drift in unregulated thermal environments.
Can HZS30-3TD-E be used in surface-mount designs?
No, HZS30-3TD-E is not a surface-mount device. It uses the axial-lead MHD package (JEITA code GRZZ0002ZC-A), which is strictly through-hole mountable. The package dimensions specify 26.0 mm lead length and 2.0 mm body diameter-physically incompatible with SMT reflow or wave soldering processes. For SMT equivalents, consider Renesas' HZ3 series or third-party SOD-123 Zener diodes with comparable 30 V ratings.
HZS30-3TD-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:
- -
HZS30-3TD-E FAQ
1.How can I place an order for HZS30-3TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS30-3TD-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 HZS30-3TD-E reliable?
The price and inventory of HZS30-3TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS30-3TD-E is usually 5 days.
3.What payment methods are accepted for HZS30-3TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS30-3TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS30-3TD-E?
HZS30-3TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS30-3TD-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 HZS30-3TD-E?
For technical support, including HZS30-3TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS30-3TD-E requirements.
6.How does Aetrix verify that HZS30-3TD-E is sourced from the original manufacturer or authorized distributors?
All HZS30-3TD-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 HZS30-3TD-E meets industry standards.
7.What is the process for return or replacement of HZS30-3TD-E?
All HZS30-3TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS30-3TD-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 HZS30-3TD-E part is unused and in its original packaging.
Return procedure for HZS30-3TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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