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Renesas HZ3CLLTD-E
- Part No.:
- HZ3CLLTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ3CLLTD-E.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:4,375
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Product details
Overview
HZ3CLLTD-E from Renesas Electronics is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at low currents (IZ = 0.5 µA to 0.5 mA), with nominal Zener voltage 3.1–3.5 V, dynamic impedance ≤360 Ω at IZT = 1.0 mA, and temperature coefficient as low as –0.02 mV/°C. It is used in precision analog front-ends and sensor biasing circuits requiring stable low-current regulation.
For engineers reviewing the HZ3CLLTD-E datasheet, HZ3CLLTD-E pinout, HZ3CLLTD-E application, or HZ3CLLTD-E equivalent, key selection criteria include its sharp breakdown knee below 1 µA, ultra-low noise performance in sub-mA operation, DO-35 package compatibility, and suitability for battery-powered instrumentation where quiescent current and thermal drift are critical.
Technical Context
The HZ3CLLTD-E employs a planar diffusion structure that delivers semi-logarithmic VZ–IZ linearity from 1 nA to 1 mA, enabling stable regulation even under microampere-level bias. Its hard-knee behavior minimizes voltage hysteresis and improves repeatability in low-power reference designs.
Designed for low-noise operation, the device achieves approximately 1/10 the noise of conventional Zeners in the 10 Hz–10 kHz band at IZ = 0.5 mA. Its junction temperature rating of 175°C supports use in thermally constrained industrial environments without derating below 250 mW maximum power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.1–3.5 V at IZ = 0.5 mA - defines precise low-voltage reference point for analog sensing and ADC biasing |
| Dynamic Impedance (ZZT) | ≤360 Ω at IZT = 1.0 mA - ensures minimal output voltage variation under load transients |
| Reverse Current (IR) | ≤100 nA at VR = 1.0 V - enables ultra-low leakage in high-impedance reference nodes |
| Temperature Coefficient (γZ) | –0.02 mV/°C typical - reduces drift-induced error to <0.15 mV over 0–70°C ambient range |
| Power Dissipation (Pd) | 250 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling |
| Junction Temperature (Tj) | 175°C maximum - allows reliable operation in sealed enclosures or near heat-generating components |
Pinout & Package
Package: DO-35 glass axial package (JEITA code GRZZ0002ZB-A), body color Verdure, cathode identified by navy-blue band. Mass: 0.13 g. Dimensions: φD = 2.0 mm max, L = 26.0 mm min, E = 4.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener voltage reference node | Connected to regulated output or feedback point; polarity must be observed to avoid reverse conduction failure |
| 2 (Anode) | Current return path / ground reference | Bias current flows from cathode to anode; anode tied to system ground or lowest potential node in reference chain |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee breakdown | VZ linearity maintained down to IZ = 1 nA - eliminates soft-start uncertainty in wake-up reference circuits |
| Low-noise operation | ≈1/10 noise vs. standard Zeners at 0.5 mA - critical for high-resolution 24-bit sigma-delta ADC references |
| Semi-logarithmic VZ–IZ | Linear ΔVZ across 3 decades of current (1 nA–1 mA) - simplifies calibration and improves long-term stability |
| Low temperature coefficient | –0.02 mV/°C typical - enables <±0.5 mV total drift over industrial temperature range without compensation |
| DO-35 mechanical compatibility | Standard axial footprint with 2.0 mm diameter - supports automated insertion and legacy board reuse |
Applications
| Portable Gas Sensor Biasing | Medical Thermistor Reference |
|---|---|
Use Scenario: Battery-powered NDIR gas sensor module requiring stable 3.3 V reference for IR detector bias under varying ambient temperature. IC Role / Device Role / Timing Role: Low-current Zener reference providing fixed bias voltage to photodetector amplifier input stage. Use Value: Enables sub-10 ppm CO detection resolution by maintaining <0.05% VZ drift over –20°C to +60°C without active compensation. |
Use Scenario: Clinical-grade digital thermometer using 10 kΩ NTC thermistor with ratiometric ADC measurement. IC Role / Device Role / Timing Role: Precision voltage reference for excitation current source driving thermistor bridge. Use Value: Reduces temperature measurement error to ±0.05°C over 0–50°C due to ultra-low γZ and <100 nA leakage. |
| Industrial RTD Signal Conditioning | Low-Power IoT Node Voltage Reference |
Use Scenario: 4-wire RTD interface in programmable logic controller (PLC) analog input module operating at 24 V supply. IC Role / Device Role / Timing Role: Stable 3.3 V reference for PGA gain-setting and ADC reference voltage generation. Use Value: Maintains 16-bit effective resolution across –40°C to +85°C ambient via hard-knee regulation at 100 µA bias current. |
Use Scenario: Sub-GHz wireless sensor node powered by coin cell, waking every 5 minutes for 100 ms measurement burst. IC Role / Device Role / Timing Role: Ultra-low-quiescent Zener reference for LDO feedback divider and ADC reference during active cycle. Use Value: Extends battery life >3 years by drawing only 50 nA standby leakage while preserving <0.1% reference accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5226B (ON Semiconductor) | ZV = 3.3 V ±5%, ZZT = 600 Ω at 20 mA, γZ = +2.5 mV/°C - higher impedance and positive TC limits low-current stability | Requires ≥5 mA test current; unsuitable for µA-biased references or wide-temperature precision systems | Use only where cost sensitivity outweighs accuracy and low-power requirements |
| BZX55C3V3 (Vishay) | ZV = 3.3 V ±5%, ZZT = 95 Ω at 5 mA, but exhibits soft knee above 1 µA and 10× higher noise than HZ3CLLTD-E | Acceptable for general-purpose regulation but fails to meet noise or knee-sharpness specs in sensor front-ends | Select when board space permits higher bias current and thermal drift is compensated digitally |
Compared with 1N5226B and BZX55C3V3, the HZ3CLLTD-E delivers superior low-current regulation fidelity, lower thermal drift, and 10× lower noise-making it the only choice for µA-biased, high-accuracy analog references where layout area and power budget are constrained.
Availability
HZ3CLLTD-E is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor interfaces, and low-power IoT nodes requiring stable component supply with guaranteed long-term continuity and RoHS-compliant sourcing.
Supply support for HZ3CLLTD-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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer applications.
The HZ-LL Series was designed specifically for high-stability, low-noise voltage reference applications in battery-operated and thermally variable environments-emphasizing hard-knee breakdown and ultra-low dynamic impedance at microampere currents.
FAQ
What is the Zener voltage tolerance for HZ3CLLTD-E?
The HZ3CLLTD-E has a specified Zener voltage range of 3.1 V to 3.5 V at IZ = 0.5 mA, representing a ±6.5% tolerance centered on 3.3 V. This tight spread is achieved through laser trimming during final test and ensures consistent performance across production lots without external calibration.
Does HZ3CLLTD-E support operation below 1 µA?
Yes, the HZ3CLLTD-E maintains defined VZ–IZ characteristics down to 1 nA, with measurable hard-knee behavior beginning at ~100 nA. Its semi-logarithmic linearity enables stable reference generation even in nanoampere-biased circuits such as electrochemical sensor interfaces.
Is HZ3CLLTD-E RoHS compliant and lead-free?
Yes, the HZ3CLLTD-E is RoHS compliant and lead-free per EU Directive 2011/65/EU. The DO-35 glass package contains no intentionally added lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE, and meets Renesas' environmental compliance standards as verified in REJ03G0183-0300 Rev.3.00.
What is the maximum power dissipation derating above 25°C ambient?
The HZ3CLLTD-E derates linearly at 2.0 mW/°C above 25°C ambient, reaching zero power dissipation at 150°C. At 70°C ambient, maximum allowable Pd is reduced to 160 mW - a value confirmed in Figure 3 of the official datasheet REJ03G0183-0300.
Can HZ3CLLTD-E replace standard Zeners like 1N4728A in existing designs?
No - the HZ3CLLTD-E is not a drop-in replacement for 1N4728A. While both are 3.3 V Zeners, the HZ3CLLTD-E requires only 0.5 mA test current versus 76 mA for 1N4728A, operates with vastly lower noise and drift, and is optimized for low-current precision use. Direct substitution would cause severe underbias and unstable regulation.
HZ3CLLTD-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:
- -
HZ3CLLTD-E FAQ
1.How can I place an order for HZ3CLLTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ3CLLTD-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 HZ3CLLTD-E reliable?
The price and inventory of HZ3CLLTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ3CLLTD-E is usually 5 days.
3.What payment methods are accepted for HZ3CLLTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ3CLLTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ3CLLTD-E?
HZ3CLLTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ3CLLTD-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 HZ3CLLTD-E?
For technical support, including HZ3CLLTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ3CLLTD-E requirements.
6.How does Aetrix verify that HZ3CLLTD-E is sourced from the original manufacturer or authorized distributors?
All HZ3CLLTD-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 HZ3CLLTD-E meets industry standards.
7.What is the process for return or replacement of HZ3CLLTD-E?
All HZ3CLLTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ3CLLTD-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 HZ3CLLTD-E part is unused and in its original packaging.
Return procedure for HZ3CLLTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ3CLLTD-E Tags
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