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Renesas HZ30-1L-E
- Part No.:
- HZ30-1L-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ30-1L-E.pdf
- Description:
- DIODE ZENER 30V 400MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
HZ30-1L-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 28.2–29.6 V at 0.5 mA, 400 mW power dissipation, 27 Ω dynamic impedance, and −55 to +175 °C storage temperature range. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ30-1L-E datasheet, HZ30-1L-E pinout, HZ30-1L-E application, or HZ30-1L-E equivalent, key selection criteria include zener voltage tolerance (±2.5%), low noise performance (1/3–1/10 that of standard HZ series), DO-35 package compatibility, and thermal coefficient behavior across 25–125 °C ambient conditions.
Technical Context
The HZ30-1L-E employs a silicon planar junction structure with controlled doping to minimize avalanche noise generation, achieving significantly lower RMS noise than legacy HZ-series Zeners. Its zener voltage is specified under DC test conditions at 0.5 mA, with dynamic resistance measured at 1 mA.
This device operates within a junction temperature limit of 175 °C and exhibits a negative temperature coefficient trend above ~6 V - confirmed by Figure 2 in REJ03G0182-0300 - making it suitable for temperature-compensated reference designs when paired with positive-TC components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28.2–29.6 V at IZ = 0.5 mA - defines stable regulation point for mid-range supply references |
| Power Dissipation (Pd) | 400 mW at Ta = 25 °C - sets maximum continuous DC power handling before thermal derating |
| Dynamic Resistance (rd) | 27 Ω max at IZ = 1 mA - determines load regulation sensitivity and ripple rejection capability |
| Reverse Leakage Current (IR) | 1 μA max at VR = 20.9 V - ensures minimal error current in high-impedance reference nodes |
| Junction Temperature (Tj) | 175 °C - enables operation in industrial environments with limited heatsinking |
| Storage Temperature (Tstg) | −55 to +175 °C - supports wide-range logistics and long-term board storage without parameter shift |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body color and navy-blue cathode band. Mass: 0.13 g. Dimensions per SC-40 standard: φD = 2.0 mm, E = 4.2 mm, L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground return | Serves as current sink path; ties to system ground or bias network common point |
Key Features
| Feature | Design Value |
|---|---|
| Noise reduction vs. HZ series | Approximately 1/3–1/10 lower RMS noise - critical for audio preamps and precision ADC references |
| Zener voltage range coverage | 28.2–29.6 V window - supports ±2.5% tolerance compliance in 28 V nominal systems |
| Low leakage performance | ≤1 μA at 20.9 V reverse bias - preserves accuracy in high-Z feedback networks |
| Thermal stability | Negative tempco trend confirmed up to 38 V - enables predictable drift compensation in multi-device references |
Applications
| High-Precision Reference Supply | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Stable 28.5 V reference for 24-bit delta-sigma ADC front-end in industrial data acquisition systems. IC Role / Device Role / Timing Role: Zener diode provides fixed voltage reference for analog input scaling and offset calibration. Use Value: Low dynamic impedance (27 Ω) minimizes gain error from load current variation; low noise prevents SNR degradation in sub-100 nV/√Hz signal chains. | Use Scenario: Bias voltage source for photodiode transimpedance amplifier in optical spectroscopy modules. IC Role / Device Role / Timing Role: Supplies low-drift, low-noise reverse bias to photodiode cathode. Use Value: 1/3–1/10 noise reduction versus standard Zeners directly improves photocurrent measurement resolution at femtoamp levels. |
| Temperature-Compensated Voltage Reference | Stabilized Power Rail Monitor |
Use Scenario: Paired with positive-TC resistor network to generate <0.5 ppm/°C reference in metrology-grade instrumentation. IC Role / Device Role / Timing Role: Primary zener element in compensated reference string with TC-matched passive components. Use Value: Documented negative tempco vs. zener voltage (Fig.2) allows precise matching to complementary positive-TC elements. | Use Scenario: Supervisory circuit detecting undervoltage on 28 V aircraft avionics rail. IC Role / Device Role / Timing Role: Zener clamping element in comparator-based threshold detector. Use Value: Tight 28.2–29.6 V tolerance ensures reliable trip point across temperature; 400 mW rating sustains transient overvoltage events without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5255B (ON Semiconductor) | Zener voltage 28 V ±5%, rd = 35 Ω, Pd = 500 mW, no published noise spec | Higher voltage tolerance and impedance; lacks documented low-noise optimization | Select when absolute cost or higher power margin outweighs noise-critical performance |
| BZX84-C27 (Diodes Inc.) | Zener voltage 27 V ±5%, SOT-23 package, rd = 40 Ω, Pd = 300 mW | Surface-mount format; lower voltage rating and higher impedance; not characterized for low-noise use | Choose for space-constrained PCBs where 27 V nominal suffices and noise is secondary |
Compared with the HZ30-1L-E, the 1N5255B offers higher power margin but looser voltage tolerance and unverified noise performance, while the BZX84-C27 trades axial through-hole reliability and low-noise design for compactness and reduced power handling - neither matches the HZ30-1L-E's combined low-noise, tight-tolerance, and industrial-temp DO-35 specification.
Availability
HZ30-1L-E is available at Aetrix Electronics and suitable for high-precision reference supplies, low-noise sensor biasing, and temperature-compensated voltage references requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for HZ30-1L-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 Technology Corp. is a Japanese semiconductor manufacturer specializing in microcontrollers, analog mixed-signal ICs, and power management solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was designed specifically for low-noise, high-stability voltage reference applications in precision analog systems - emphasizing reduced avalanche noise, tight zener voltage tolerance, and robust thermal performance in axial-glass packages.
FAQ
What is the zener voltage tolerance of HZ30-1L-E?
The HZ30-1L-E has a zener voltage range of 28.2 V to 29.6 V at 0.5 mA test current, corresponding to a ±2.5% tolerance around the nominal 28.9 V midpoint. This tolerance is guaranteed under DC test conditions per REJ03G0182-0300 Rev.3.00 and applies across the full operating temperature range when used within rated power limits. The HZ30-1L-E maintains this specification without requiring external trimming or calibration.
Does HZ30-1L-E have a documented noise specification?
Yes - the HZ30-1L-E datasheet explicitly states its noise level is approximately 1/3 to 1/10 lower than the standard HZ series Zener diodes. This improvement results from optimized silicon planar junction processing and is validated across the HZ-L family. While absolute RMS noise values (nV/√Hz) are not tabulated for HZ30-1L-E individually, the relative reduction is confirmed in the Features section of REJ03G0182-0300, making the HZ30-1L-E suitable for low-noise analog reference designs where the original HZ series proved insufficient.
What is the maximum reverse current specification for HZ30-1L-E?
The HZ30-1L-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 20.9 V, per the Electrical Characteristics table on page 2 of REJ03G0182-0300. This low leakage ensures minimal error contribution in high-impedance reference divider networks and supports accurate biasing in sensitive analog front-ends. The HZ30-1L-E maintains this performance up to its rated junction temperature of 175 °C when operated within power derating curves.
Is HZ30-1L-E compatible with DO-35 socket footprints?
Yes - the HZ30-1L-E uses the standard DO-35 package (JEITA code GRZZ0002ZB-A) with 26.0 mm body length, 2.0 mm diameter, and 4.2 mm lead spacing (E dimension). Its mechanical dimensions match industry-standard DO-35 footprints, enabling direct replacement in existing through-hole layouts designed for axial-glass Zener diodes. The HZ30-1L-E's orange body and navy-blue cathode band also conform to DO-35 polarity marking conventions.
What is the dynamic resistance of HZ30-1L-E and why does it matter?
The HZ30-1L-E has a maximum dynamic resistance (rd) of 27 Ω at IZ = 1 mA, as specified in the Electrical Characteristics table. This parameter quantifies how much the zener voltage changes per unit change in current - lower rd means better regulation under varying load conditions. For the HZ30-1L-E, 27 Ω enables stable reference performance in circuits with moderate current fluctuations, such as op-amp reference inputs or discrete regulator error amplifiers, directly improving system accuracy and line/load regulation.
HZ30-1L-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- HZ-L
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±2.33%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 27 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ30-1L-E FAQ
1.How can I place an order for HZ30-1L-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ30-1L-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 HZ30-1L-E reliable?
The price and inventory of HZ30-1L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ30-1L-E is usually 5 days.
3.What payment methods are accepted for HZ30-1L-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ30-1L-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ30-1L-E?
HZ30-1L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ30-1L-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 HZ30-1L-E?
For technical support, including HZ30-1L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ30-1L-E requirements.
6.How does Aetrix verify that HZ30-1L-E is sourced from the original manufacturer or authorized distributors?
All HZ30-1L-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 HZ30-1L-E meets industry standards.
7.What is the process for return or replacement of HZ30-1L-E?
All HZ30-1L-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ30-1L-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 HZ30-1L-E part is unused and in its original packaging.
Return procedure for HZ30-1L-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ30-1L-E Tags
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