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Renesas HZ27-3LRE-E
- Part No.:
- HZ27-3LRE-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ27-3LRE-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
HZ27-3LRE-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 27.2–28.6 V at 0.5 mA test current, 24.0 Ω dynamic impedance, 400 mW power dissipation, and DO-35 glass package. It serves as a stable reference in low-drift power supplies and sensor signal conditioning.
For engineers reviewing the HZ27-3LRE-E datasheet, HZ27-3LRE-E pinout, HZ27-3LRE-E application, or HZ27-3LRE-E equivalent, key selection criteria include zener voltage tolerance (±2.5%), temperature coefficient (−0.04 %/°C typical), low noise performance (1/3–1/10 of standard HZ series), and DO-35 mechanical compatibility for through-hole PCB layouts.
Technical Context
This device operates as a two-terminal shunt regulator with DC-tested zener characteristics and exhibits a negative temperature coefficient of −0.04 %/°C near 27 V, enabling predictable drift compensation in temperature-sensitive references. Its low dynamic resistance (24.0 Ω) and low leakage support stable regulation under light-load conditions.
The HZ27-3LRE-E uses a silicon planar junction structure with navy-blue cathode band marking and orange body color, packaged in JEITA-standard DO-35 (GRZZ0002ZB-A) with 26.0 mm lead length. It is rated for 175°C junction temperature and −55 to +175°C storage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 27.2–28.6 V at IZ = 0.5 mA - defines precise regulation point for mid-range voltage references |
| Dynamic Resistance | 24.0 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation | 400 mW - supports continuous operation in compact through-hole designs without forced cooling |
| Reverse Leakage | ≤1 μA at VR = 20.9 V - enables high-impedance bias networks and low-power standby modes |
| Temp. Coefficient | −0.04 %/°C - provides predictable, linear voltage drift for compensated reference designs |
| Junction Temp. | 175°C - allows reliable operation in industrial ambient environments up to 125°C |
Pinout & Package
Package: DO-35 glass axial package (JEITA code GRZZ0002ZB-A), 2.0 mm diameter, 26.0 mm lead length, orange body with navy-blue cathode band. Cathode identified by band; anode is unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; sinks current during zener conduction |
| 2 (Unbanded End) | Anode | Connected to circuit ground or common return path; completes shunt regulation loop |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ≈1/3–1/10 that of standard HZ series - critical for audio preamps and precision ADC references |
| Stable low-impedance regulation | 24.0 Ω dynamic resistance at 0.5 mA - maintains tight voltage control across varying source impedances |
| Wide zener voltage tolerance control | ±2.5% total tolerance (27.2–28.6 V) - enables binning for matched reference pairs |
| High thermal reliability | 175°C max junction temperature - supports long-term stability in sealed enclosures and high-ambient applications |
Applications
| Instrumentation Reference | Low-Noise Audio Supply |
|---|---|
Use Scenario: Precision multimeter front-end voltage reference requiring <5 ppm/°C drift over 0–50°C. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 27.5 V bias for op-amp gain-setting networks. Use Value: −0.04 %/°C tempco and 24.0 Ω impedance minimize measurement error due to thermal and load variation. | Use Scenario: Phantom power supply rail stabilization in condenser microphone preamplifiers. IC Role / Device Role / Timing Role: Low-noise zener clamp regulating +24 V rail against switching noise from DC-DC converters. Use Value: 1/10 noise level vs. standard HZ diodes preserves signal-to-noise ratio in sub-10 μV input stages. |
| Sensor Excitation Circuit | Industrial PLC Analog Input |
Use Scenario: Constant-current excitation for 350 Ω strain gauges in load cell interfaces. IC Role / Device Role / Timing Role: Zener-stabilized current source reference enabling 0.01% full-scale accuracy. Use Value: 400 mW rating supports 10 mA excitation current with margin; low leakage avoids offset errors. | Use Scenario: Isolated 4–20 mA transmitter reference in hazardous-area field instruments. IC Role / Device Role / Timing Role: Primary voltage reference for DAC output scaling and loop calibration. Use Value: DO-35 package withstands reflow and conformal coating; 175°C Tj ensures longevity in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5255BTR | Zener voltage 27 V ±5%, rd = 35 Ω, Pd = 500 mW, DO-35 package | Higher voltage tolerance and impedance; higher power but no low-noise optimization | Select when absolute cost or availability outweighs noise and tempco requirements |
| BZX84-C27LT1G | Zener voltage 27 V ±5%, rd = 50 Ω, Pd = 300 mW, SOT-23 package | SMT-only, higher impedance, no low-noise specification, lower power rating | Select only for space-constrained PCBs where through-hole mounting is not feasible |
Compared with 1N5255BTR and BZX84-C27LT1G, the HZ27-3LRE-E delivers superior low-noise performance and tighter tempco for precision analog systems, while maintaining DO-35 compatibility-making it optimal for legacy-replacement and metrology-grade designs where spectral purity and thermal stability are prioritized over raw power or footprint size.
Availability
HZ27-3LRE-E is available at Aetrix Electronics and suitable for instrumentation reference, low-noise audio supply, and sensor excitation circuits requiring stable component supply with consistent parametric binning and long-lifecycle support.
Supply support for HZ27-3LRE-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 devices, and power management ICs for industrial, automotive, and infrastructure markets.
The HZ-L Series is part of Renesas' precision analog portfolio, designed specifically for low-noise, low-drift voltage reference applications in test equipment, medical sensors, and high-fidelity signal chains.
FAQ
What is the exact zener voltage range specified for HZ27-3LRE-E?
The HZ27-3LRE-E has a guaranteed zener voltage range of 27.2 V to 28.6 V when tested at IZ = 0.5 mA and Ta = 25°C. This 1.4 V span reflects its ±2.5% tolerance grade within the HZ-L family's binned voltage variants, ensuring repeatable performance in calibrated reference designs.
Does HZ27-3LRE-E support surface-mount assembly?
No, the HZ27-3LRE-E is packaged exclusively in the DO-35 axial glass case (JEITA GRZZ0002ZB-A) and is intended for through-hole mounting only. Its 26.0 mm lead length and 2.0 mm body diameter are optimized for wave soldering and manual insertion-not compatible with SMT reflow profiles or pick-and-place equipment.
How does the noise performance of HZ27-3LRE-E compare to standard Zener diodes?
The HZ27-3LRE-E achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to optimized silicon planar junction processing and low-leakage design. This is verified per Renesas characterization and makes it suitable for applications where broadband noise below 10 kHz must be minimized-such as precision DAC references and low-level sensor amplifiers.
What is the maximum reverse current specification for HZ27-3LRE-E?
The HZ27-3LRE-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 20.9 V and Ta = 25°C. This ultra-low leakage supports high-impedance bias networks and prevents loading errors in micropower circuits where input currents must remain below 100 nA.
Can HZ27-3LRE-E be used in place of HZ27-3L?
Yes-the HZ27-3LRE-E is a Renesas-qualified variant of the HZ27-3L, sharing identical electrical specifications, DO-35 packaging, and pinout. The "E" suffix denotes enhanced screening or traceability per Renesas internal standards, with no functional or parametric deviation from HZ27-3L in the REJ03G0182-0300 datasheet.
HZ27-3LRE-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:
- -
HZ27-3LRE-E FAQ
1.How can I place an order for HZ27-3LRE-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ27-3LRE-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 HZ27-3LRE-E reliable?
The price and inventory of HZ27-3LRE-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ27-3LRE-E is usually 5 days.
3.What payment methods are accepted for HZ27-3LRE-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ27-3LRE-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ27-3LRE-E?
HZ27-3LRE-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ27-3LRE-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 HZ27-3LRE-E?
For technical support, including HZ27-3LRE-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ27-3LRE-E requirements.
6.How does Aetrix verify that HZ27-3LRE-E is sourced from the original manufacturer or authorized distributors?
All HZ27-3LRE-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 HZ27-3LRE-E meets industry standards.
7.What is the process for return or replacement of HZ27-3LRE-E?
All HZ27-3LRE-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ27-3LRE-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 HZ27-3LRE-E part is unused and in its original packaging.
Return procedure for HZ27-3LRE-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ27-3LRE-E Tags
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MM5Z5V1ST1G
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