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Renesas HZ3CLLTA-E
- Part No.:
- HZ3CLLTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ3CLLTA-E.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:25,000
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Product details
Overview
HZ3CLLTA-E from Renesas Electronics is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at 3.1–3.5 V nominal Zener voltage, 0.5 mA test current, and 360 Ω dynamic impedance (ZZT), packaged in DO-35 with navy-blue cathode band. It delivers sharp breakdown characteristics from 1 nA to 1 mA and exhibits low temperature coefficient (≈−0.03 mV/°C) for precision analog sensing and regulation circuits.
For engineers reviewing the HZ3CLLTA-E datasheet, HZ3CLLTA-E pinout, HZ3CLLTA-E application, or HZ3CLLTA-E equivalent, key selection criteria include its low-noise Zener behavior in sub-mA biasing, tight VZ tolerance (±0.2 V), DO-35 mechanical compatibility, and suitability for low-power reference design where thermal stability and knee sharpness are critical.
Technical Context
The HZ3CLLTA-E employs a planar diffusion process to achieve semi-logarithmic VZ–IZ linearity across 1 nA–1 mA, enabling stable reference generation even under microampere bias. Its hard-knee characteristic minimizes transition-region uncertainty, supporting accurate threshold detection in battery-monitoring and sensor signal conditioning.
Dynamic impedance remains low (360 Ω typ. at IZT = 0.5 mA) and noise voltage is approximately one-tenth that of conventional Zeners-critical for high-resolution ADC references and low-drift op-amp bias networks. The device operates within a −55°C to +175°C storage range and 175°C maximum junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.1–3.5 V at IZ = 0.5 mA - defines stable reference point for low-voltage analog circuits |
| Dynamic Impedance (ZZT) | 360 Ω typical at IZT = 0.5 mA - ensures minimal output voltage shift under load variation |
| Reverse Current (IR) | ≤100 nA at VR = 1.0 V - enables ultra-low standby leakage in always-on monitoring nodes |
| Temperature Coefficient (γZ) | ≈−0.03 mV/°C - supports <±2 mV drift over 0–70°C ambient, suitable for industrial-grade references |
| Power Dissipation (Pd) | 250 mW max at Ta = 25°C - limits self-heating impact on voltage accuracy in compact PCB layouts |
| Junction Temperature (Tj) | 175°C max - allows operation in high-temperature environments such as automotive engine compartments |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with navy-blue cathode band and verdure body color. Dimensions: φD = 2.0 mm max, L = 26.0 mm min, E = 4.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to higher-potential node; reverse-biased operation requires cathode > anode by ≥VZ |
| 2 (Anode) | Reference ground return | Serves as circuit common; must be low-impedance path to minimize noise coupling into reference output |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee breakdown | Sharp VZ transition between 1 nA and 1 mA enables precise low-current threshold detection without soft rolloff |
| Low dynamic impedance | 360 Ω typical at 0.5 mA improves load regulation in series-shunt reference topologies |
| Ultra-low noise | ≈1/10 noise of standard Zeners supports high-SNR signal chains in precision instrumentation |
| Negative tempco near zero-crossing | γZ ≈ −0.03 mV/°C at ~3.3 V allows stable reference over wide temperature ranges without external compensation |
Applications
| Battery Voltage Monitor | ADC Reference Source |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage during charge/discharge cycles in portable medical devices. IC Role / Device Role / Timing Role: Provides stable 3.3 V reference for 12-bit SAR ADC input scaling. Use Value: Hard-knee behavior ensures consistent trip-point detection at 3.2 V ±10 mV, reducing false low-battery alerts. |
Use Scenario: Supplying reference voltage to a low-power sigma-delta ADC in environmental sensor nodes. IC Role / Device Role / Timing Role: Zener diode operating at 100 µA bias to minimize power while maintaining reference integrity. Use Value: Low 100 nA reverse leakage and 360 Ω ZZT enable <0.5 LSB error contribution over 0–50°C ambient. |
| Op-Amp Bias Network | Overvoltage Clamp |
Use Scenario: Generating matched bias voltages for rail-to-rail input op-amps in audio front-ends. IC Role / Device Role / Timing Role: Paired HZ3CLLTA-E diodes establish symmetrical ±3.3 V virtual grounds. Use Value: Tight VZ matching (±0.2 V) and low tempco ensure <1 mV offset drift across temperature, preserving CMRR. |
Use Scenario: Protecting MCU GPIO pins from transient overvoltage in industrial control I/O modules. IC Role / Device Role / Timing Role: Shunts excess energy above 3.5 V to ground during ESD events. Use Value: Fast knee response (<10 ns rise time implied by low ZZK) clamps spikes before damage thresholds are exceeded. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4728A (ON Semiconductor) | VZ = 3.3 V ±5%, ZZT = 10 Ω @ 76 mA - lower impedance but requires 20× higher test current; higher noise floor | Designed for higher-power regulation; unsuitable for µA-biased references or low-noise analog stages | Select only if circuit can support ≥20 mA bias and thermal management for 1 W dissipation |
| BZX55C3V3 (Vishay) | VZ = 3.3 V ±5%, ZZT = 95 Ω @ 5 mA - moderate impedance, no hard-knee specification; γZ ≈ +2.5 mV/°C | Standard Zener with positive tempco - requires external compensation for stable reference over temperature | Acceptable for cost-sensitive consumer applications where ±10 mV drift over 0–70°C is tolerable |
Compared with 1N4728A and BZX55C3V3, the HZ3CLLTA-E offers uniquely low-noise, hard-knee performance at microampere bias currents-making it the only option among the three viable for precision low-power reference designs requiring sub-mV thermal drift and sharp turn-on.
Availability
HZ3CLLTA-E is available at Aetrix Electronics and suitable for battery-powered instrumentation, sensor interface modules, and industrial control systems requiring stable component supply with guaranteed long-term continuity and RoHS-compliant sourcing.
Supply support for HZ3CLLTA-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 infrastructure markets.
The HZ-LL Series was developed specifically for high-stability, low-noise voltage reference applications demanding sharp Zener knee characteristics and minimal temperature drift in space-constrained, low-power systems.
FAQ
What is the Zener voltage tolerance for HZ3CLLTA-E?
The HZ3CLLTA-E has a specified Zener voltage range of 3.1 V to 3.5 V at IZ = 0.5 mA, corresponding to a ±0.2 V absolute tolerance. This tight window supports accurate threshold setting in precision analog comparators and reference buffers without trimming. The tolerance is verified per Renesas REJ03G0183-0300 Rev.3.00 test conditions and applies to all units shipped as HZ3CLLTA-E.
Does HZ3CLLTA-E support operation below 1 µA bias current?
Yes, the HZ3CLLTA-E maintains defined Zener characteristics down to 1 nA reverse current, as confirmed by its semi-logarithmic VZ–IZ curve in Figure 1 of the official datasheet. At 100 nA, VZ deviates by less than 50 mV from its 0.5 mA value-enabling use in nanoampere-sleep-mode references where quiescent current must remain below 500 nA.
Is HZ3CLLTA-E RoHS compliant and halogen-free?
Yes, HZ3CLLTA-E meets EU RoHS Directive 2011/65/EU requirements and is manufactured as a halogen-free device per Renesas' environmental compliance policy. The DO-35 package uses lead-free glass and internal metallization compatible with standard reflow and wave soldering processes, with full material declarations available upon request from Aetrix Electronics.
Can HZ3CLLTA-E replace standard 3.3 V Zeners like BZX55C3V3 in existing designs?
Direct replacement is not recommended without validation: HZ3CLLTA-E has different VZ distribution (3.1–3.5 V vs. 3.135–3.465 V), lower bias current requirement (0.5 mA vs. 5 mA), and distinct tempco (−0.03 mV/°C vs. +2.5 mV/°C). Circuit redesign-especially for bias network and thermal compensation-is required to retain accuracy when substituting HZ3CLLTA-E for BZX55C3V3.
What is the maximum allowable power dissipation for HZ3CLLTA-E at 70°C ambient?
Per Figure 3 in the HZ-LL Series datasheet, the derated power dissipation for HZ3CLLTA-E at Ta = 70°C is approximately 180 mW. This is calculated using the linear derating slope of 2.5 mW/°C beyond 25°C, applied to the 250 mW absolute maximum rating. Exceeding this limit risks junction temperature exceeding 175°C and accelerated parametric drift.
HZ3CLLTA-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:
- -
HZ3CLLTA-E FAQ
1.How can I place an order for HZ3CLLTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ3CLLTA-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 HZ3CLLTA-E reliable?
The price and inventory of HZ3CLLTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ3CLLTA-E is usually 5 days.
3.What payment methods are accepted for HZ3CLLTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ3CLLTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ3CLLTA-E?
HZ3CLLTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ3CLLTA-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 HZ3CLLTA-E?
For technical support, including HZ3CLLTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ3CLLTA-E requirements.
6.How does Aetrix verify that HZ3CLLTA-E is sourced from the original manufacturer or authorized distributors?
All HZ3CLLTA-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 HZ3CLLTA-E meets industry standards.
7.What is the process for return or replacement of HZ3CLLTA-E?
All HZ3CLLTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ3CLLTA-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 HZ3CLLTA-E part is unused and in its original packaging.
Return procedure for HZ3CLLTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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