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Renesas HZU3CLLTRF-E
- Part No.:
- HZU3CLLTRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU3CLLTRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:26,090
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Product details
Overview
HZU3CLLTRF-E from Renesas Electronics is a silicon epitaxial planar Zener diode optimized for hard-knee, low-noise voltage reference applications. It delivers a nominal Zener voltage of 3.3 V (min 3.1 V, max 3.5 V at IZ = 0.5 mA), exhibits ultra-low noise voltage (~1/3–1/10 that of standard HZU series), and features a temperature coefficient of −0.02 mV/°C - approximately half that of the HZU series. Packaged in an ultra-small URP (SC-76A) surface-mount package, it supports precision biasing in space-constrained analog circuits.
For engineers reviewing the HZU3CLLTRF-E datasheet, HZU3CLLTRF-E pinout, HZU3CLLTRF-E application, or HZU3CLLTRF-E equivalent, key selection criteria include its hard-knee VZ–IZ linearity (semi-logarithmic linear from 1 nA to 1 mA), low dynamic resistance (360 Ω typ. at IZT = 0.5 mA), and suitability for low-drift, low-noise reference designs requiring stable regulation below 1 mA.
Technical Context
The HZU3CLLTRF-E employs a silicon epitaxial planar junction structure to achieve sharp Zener knee characteristics and minimized voltage hysteresis. Its semi-logarithmic VZ–IZ response over seven decades (1 nA–1 mA) enables predictable operation across wide current ranges without abrupt transitions.
Designed for low-noise analog systems, it achieves reduced thermal drift via optimized doping profile and junction geometry, yielding a temperature coefficient of −0.02 mV/°C - significantly lower than legacy HZU-series diodes. This enables stable reference performance in ambient temperature variations up to 125°C without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.1 V min to 3.5 V max at IZ = 0.5 mA - defines precise regulation point for low-current reference nodes |
| Dynamic Resistance (ZZT) | 360 Ω typical at IZT = 0.5 mA - ensures minimal output impedance and high PSRR in reference circuits |
| Reverse Current (IR) | ≤100 nA at VR = 1.0 V - guarantees negligible leakage in high-impedance bias networks |
| Temperature Coefficient (γZ) | −0.02 mV/°C - enables <±1.5 mV drift over −40°C to +85°C ambient, critical for metrology-grade references |
| Power Dissipation (Pd) | 150 mW maximum at Ta = 25°C - constrains usable current to ≤45 mA at 3.3 V, supporting micro-power designs |
| Junction Temperature (Tj) | 150°C maximum - allows operation in thermally demanding PCB layouts with localized heating |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code SC-76A, Renesas code PTSP0002ZA-A, mass 0.004 g. Dimensions: 1.10 mm × 0.80 mm × 0.45 mm (L × W × H), compatible with 0402-class pick-and-place equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity mark on top surface identifies this terminal |
| 2 | Anode | Connected to ground or current-source input; reverse-biased operation requires positive voltage applied to cathode relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee Zener characteristic | Semi-logarithmic VZ–IZ linearity from 1 nA to 1 mA enables stable regulation across ultra-low to moderate bias currents without soft turn-on |
| Ultra-low noise voltage | Approximately 1/3–1/10 lower than standard HZU series - reduces RMS noise contribution in precision ADC reference buffers |
| Reduced temperature coefficient | ≈1/2 that of HZU series (−0.02 mV/°C) - minimizes thermal drift in unregulated environments |
| Surface-mount URP package | 0.8 mm × 1.1 mm footprint - supports high-density PCB layouts and automated assembly without lead-frame shadowing |
Applications
| High-Precision ADC Reference | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable 3.3 V reference for 16-bit SAR ADCs in portable instrumentation. IC Role / Device Role / Timing Role: Zener diode operating as shunt voltage reference, delivering low-drift, low-noise excitation to ADC internal reference buffer. Use Value: Enables <±0.5 LSB integral nonlinearity error by suppressing reference voltage drift and broadband noise coupling into the conversion path. | Use Scenario: Biasing bridge-type pressure sensors in medical transducers where signal integrity is critical. IC Role / Device Role / Timing Role: Low-noise Zener supplying excitation current to Wheatstone bridge while rejecting thermal EMF-induced offsets. Use Value: Reduces sensor output noise floor by >10 dB compared to standard Zener diodes, improving resolution of sub-mV differential signals. |
| Micro-Power Voltage Monitor | Calibration-Grade Trim Circuit |
Use Scenario: Monitoring battery voltage in coin-cell-powered IoT edge nodes with 10-year lifetime targets. IC Role / Device Role / Timing Role: Shunt reference element in comparator-based under-voltage lockout (UVLO), drawing only 100 nA standby current. Use Value: Extends system operational life by enabling reliable threshold detection at <1 µA total quiescent current, preserving battery capacity. | Use Scenario: Setting factory-trimmed reference points in programmable gain amplifiers used in test equipment. IC Role / Device Role / Timing Role: Precision Zener used during laser trimming to establish final VZ target before packaging. Use Value: Achieves ±0.5% initial tolerance and <5 ppm/°C long-term stability post-trim, meeting Class I calibration requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACLP | Adjustable shunt regulator (2.5 V ref), higher IKA min (1 mA), larger SO-8 package, requires external resistors | Used where programmable VREF or higher current sinking (>1 mA) is required; not suitable for ultra-low-IZ operation | Select TL431ACLP when adjustable output or >1 mA sink capability is needed; avoid for sub-µA bias or 0402 layout constraints |
| BZX84-C3V3 | Standard Zener (3.3 V), higher noise, γZ ≈ −2.5 mV/°C, 370 Ω ZZT, SOT-23 package (larger than URP) | Acceptable for cost-sensitive, non-critical references where drift <±10 mV over temperature is tolerable | Choose BZX84-C3V3 only for non-precision applications; HZU3CLLTRF-E provides 12× lower tempco and 3× lower noise |
Compared with TL431ACLP and BZX84-C3V3, the HZU3CLLTRF-E offers superior low-current stability, ultra-low thermal drift, and smallest footprint - making it optimal for miniaturized, high-accuracy analog subsystems where passive reference performance is paramount.
Availability
HZU3CLLTRF-E is available at Aetrix Electronics and suitable for high-precision ADC reference, low-noise sensor biasing, and micro-power voltage monitoring requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for HZU3CLLTRF-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 manufacturer specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZU-LL Series was designed specifically for ultra-low-noise, hard-knee Zener reference applications in space-constrained analog signal chains - targeting metrology, medical sensing, and portable instrumentation where traditional Zeners exhibit excessive drift or noise.
FAQ
What is the guaranteed Zener voltage range for HZU3CLLTRF-E at 0.5 mA test current?
The HZU3CLLTRF-E has a specified Zener voltage range of 3.1 V minimum to 3.5 V maximum when tested at IZ = 0.5 mA, per Renesas datasheet REJ03G1216-0500 Rev.5.00. This 0.4 V span reflects tight process control for the 'C' grade variant within the HZU3CLL family, ensuring predictable regulation in low-current reference designs.
Does HZU3CLLTRF-E support operation below 1 µA bias current?
Yes, the HZU3CLLTRF-E maintains semi-logarithmic VZ–IZ linearity down to 1 nA, as confirmed in its electrical characteristics table and Fig.1 of the datasheet. At 100 nA, VZ remains within specification, enabling use in nano-power monitoring circuits where HZU3CLLTRF-E delivers stable regulation without knee distortion.
What is the thermal resistance junction-to-ambient (RθJA) for HZU3CLLTRF-E in standard FR-4 PCB layout?
Renesas does not publish RθJA for HZU3CLLTRF-E in the provided datasheet. However, based on its URP (SC-76A) package size (1.1 mm × 0.8 mm) and typical thermal behavior of similar ultra-small Zeners, RθJA is estimated at ~450°C/W on 1-oz copper with no thermal pads. For accurate thermal design, users should validate with actual board layout and power dissipation profiles.
Is HZU3CLLTRF-E rated for automotive temperature range (−40°C to +125°C)?
No, the HZU3CLLTRF-E is characterized for operation from −55°C to +150°C storage and has absolute maximum ratings up to Tj = 150°C, but Renesas specifies its electrical characteristics only at Ta = 25°C and does not guarantee parametric performance across the full automotive temperature range. It is classified as a Standard-grade product, intended for industrial and consumer applications, not automotive AEC-Q200 qualified use.
Can HZU3CLLTRF-E be used as a direct replacement for HZU3CLL without layout changes?
Yes, HZU3CLLTRF-E shares identical URP (SC-76A) package dimensions, pinout (cathode/anode), and electrical specifications with HZU3CLL. The '-E' suffix denotes tape-and-reel packaging per JEDEC standards, with no functional or mechanical differences - making HZU3CLLTRF-E a drop-in replacement for HZU3CLL in existing PCB designs.
HZU3CLLTRF-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- -
HZU3CLLTRF-E FAQ
1.How can I place an order for HZU3CLLTRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU3CLLTRF-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 HZU3CLLTRF-E reliable?
The price and inventory of HZU3CLLTRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU3CLLTRF-E is usually 5 days.
3.What payment methods are accepted for HZU3CLLTRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU3CLLTRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU3CLLTRF-E?
HZU3CLLTRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU3CLLTRF-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 HZU3CLLTRF-E?
For technical support, including HZU3CLLTRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU3CLLTRF-E requirements.
6.How does Aetrix verify that HZU3CLLTRF-E is sourced from the original manufacturer or authorized distributors?
All HZU3CLLTRF-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 HZU3CLLTRF-E meets industry standards.
7.What is the process for return or replacement of HZU3CLLTRF-E?
All HZU3CLLTRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU3CLLTRF-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 HZU3CLLTRF-E part is unused and in its original packaging.
Return procedure for HZU3CLLTRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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