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Renesas HZU11C2LTRF-E
- Part No.:
- HZU11C2LTRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU11C2LTRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:123,000
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Product details
Overview
HZU11C2LTRF-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 4.9 V to 5.3 V at 0.5 mA, exhibits ultra-low noise voltage (~1/3–1/10 that of standard HZU series), and features a temperature coefficient of approximately −0.02 mV/°C - enabling precision biasing in analog sensor front-ends and low-drift instrumentation amplifiers.
For engineers reviewing the HZU11C2LTRF-E datasheet, HZU11C2LTRF-E pinout, HZU11C2LTRF-E application, or HZU11C2LTRF-E equivalent, key selection criteria include its ultra-small URP (SC-76A) surface-mount package, semi-logarithmic VZ–IZ linearity from 1 nA to 1 mA, dynamic resistance of 380 Ω at IZT = 3.0 mA, and storage temperature range of −55°C to +150°C.
Technical Context
The HZU11C2LTRF-E belongs to the HZU-LL series, engineered specifically for low-noise voltage regulation where conventional Zener diodes introduce excessive broadband noise. Its epitaxial planar structure achieves tighter VZ tolerance and reduced temperature drift compared to legacy HZU variants.
It operates with a reverse current range spanning 1 nA to 1 mA while maintaining semi-logarithmic linearity - critical for high-impedance reference nodes. The device's dynamic impedance (ZZT = 380 Ω typ. at 3.0 mA) and knee impedance (ZZK = 50 kΩ max. at 0.5 µA) are specified under DC test conditions per REJ03G1216-0500 Rev.5.00.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.9 V min. to 5.3 V max. at IZ = 0.5 mA - defines stable reference point for low-drift analog circuits |
| Dynamic Resistance (ZZT) | 380 Ω typical at IZT = 3.0 mA - determines AC impedance seen by reference node under load variation |
| Reverse Current (IR) | 100 nA max. at VR = 1.5 V - ensures minimal leakage in high-impedance bias networks |
| Temperature Coefficient (γZ) | −0.02 mV/°C typical - enables <10 ppm/°C drift over 0–70°C ambient range |
| Power Dissipation (Pd) | 150 mW maximum at Ta = 25°C - sets upper limit for continuous DC bias current (≤30 mA at 5 V) |
| Junction Temperature (Tj) | 150°C maximum - constrains thermal design margin for PCB copper area and ambient derating |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code PTSP0002ZA-A, SC-76A outline, mass ≈ 0.004 g. Designed for automated SMT assembly with 0.8 mm terminal pitch and 1.55–1.85 mm body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity mark on package top indicates this terminal |
| 2 | Anode | Connected to ground or current-source bias; reverse-biased operation requires positive voltage applied here relative to Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise voltage reference | ~1/3–1/10 noise vs. standard HZU series - reduces RMS noise floor in precision ADC reference buffers |
| Semi-logarithmic VZ–IZ linearity | Valid from 1 nA to 1 mA - supports stable biasing across wide current ranges without curvature error |
| Reduced temperature coefficient | ≈1/2 that of HZU series - improves long-term stability in unregulated environments |
| Ultra-small URP package | SC-76A footprint (1.55 × 0.80 mm) - enables high-density layout in space-constrained sensor modules |
Applications
| High-Precision Sensor Biasing | Low-Drift Instrumentation Amplifier Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to bridge-based pressure sensors in industrial transmitters. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to generate fixed 5.1 V reference for Wheatstone bridge bias. Use Value: Ultra-low noise and sub-10 ppm/°C drift ensure ≤0.05% full-scale error over −25°C to +85°C operating range. | Use Scenario: Setting common-mode voltage and gain-setting reference in 24-bit delta-sigma ADC front-end stages. IC Role / Device Role / Timing Role: Low-impedance, low-noise voltage reference source for op-amp feedback networks and ADC reference inputs. Use Value: 380 Ω dynamic resistance and 100 nA leakage minimize reference loading error and input offset drift. |
| Portable Medical Pulse Oximeter Front-End | Automotive Cabin Temperature Sensor Interface |
Use Scenario: Supplying regulated bias to photodiode transimpedance amplifiers in battery-powered oximeters. IC Role / Device Role / Timing Role: Low-power Zener reference delivering 5.1 V at microamp-level quiescent current. Use Value: Valid VZ–IZ linearity down to 1 nA enables stable operation even during deep sleep modes with nanoamp bias currents. | Use Scenario: Generating reference voltage for thermistor-based cabin air temperature measurement circuits. IC Role / Device Role / Timing Role: Temperature-stable Zener element compensating for thermistor nonlinearity in analog signal conditioning. Use Value: −0.02 mV/°C tempco directly counterbalances typical NTC thermistor drift, reducing calibration burden. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDBVR | Adjustable shunt regulator (2.5 V ref), higher IKA (1 mA min.), 0.2 Ω typical output impedance | Requires external resistors for 5.1 V setting; better for programmable references but larger solution size | Choose when adjustable output or lower dynamic impedance is required; not drop-in due to 3-pin SOT-23 footprint and different bias topology |
| BZX84-C5V1 | Standard Zener, 5.1 V ±5%, ZZT = 600 Ω typ., γZ = −2.5 mV/°C, 350 mW Pd | Higher noise, wider VZ tolerance, and 125× worse tempco - suitable only for non-critical power rail clamping | Choose only for cost-sensitive, non-precision applications where drift and noise are not design constraints |
Compared with TL431ACDBVR and BZX84-C5V1, the HZU11C2LTRF-E provides superior noise performance, tighter VZ tolerance, and significantly improved temperature stability - making it the preferred choice for fixed-voltage, low-drift analog reference nodes where board space and passive count must be minimized.
Availability
HZU11C2LTRF-E is available at Aetrix Electronics and suitable for high-precision sensor biasing, low-drift instrumentation amplifier reference, and portable medical pulse oximeter front-end designs requiring stable component supply and guaranteed long-term availability.
Supply support for HZU11C2LTRF-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 devices, and precision analog components for industrial, automotive, and IoT applications.
The HZU-LL series was developed to address demand for ultra-low-noise, hard-knee Zener diodes in high-resolution data acquisition systems - targeting applications where traditional Zeners introduce unacceptable noise or thermal drift.
FAQ
What is the exact Zener voltage range for HZU11C2LTRF-E at 0.5 mA?
The HZU11C2LTRF-E has a specified Zener voltage range of 4.9 V minimum to 5.3 V maximum when tested at IZ = 0.5 mA, per REJ03G1216-0500 Rev.5.00. This corresponds to the "HZU5CLL" variant within the HZU-LL family and is confirmed by laser marking "5C" on the device top surface. The HZU11C2LTRF-E maintains this specification across its qualified operating temperature range.
Does HZU11C2LTRF-E support operation below 1 µA reverse current?
Yes, the HZU11C2LTRF-E exhibits semi-logarithmic VZ–IZ linearity down to 1 nA, as documented in the Electrical Characteristics table and Fig.1 of REJ03G1216-0500. At IZ = 10 nA, VZ remains within specification, enabling use in ultra-low-power sensor bias networks where quiescent current must remain below 100 nA.
What is the thermal resistance junction-to-ambient (θJA) for HZU11C2LTRF-E?
The datasheet does not specify θJA for HZU11C2LTRF-E. However, Fig.3 provides the derated power dissipation curve: Pd = 150 mW at Ta = 25°C, linearly decreasing to 0 mW at Ta = 150°C. Using this curve, θJA can be approximated as ~833°C/W - consistent with typical SC-76A packaged Zeners. For thermal design, users should rely on the published Pd vs. Ta plot rather than assuming a fixed θJA.
Is HZU11C2LTRF-E RoHS compliant and halogen-free?
Yes, HZU11C2LTRF-E complies with EU RoHS Directive 2011/65/EU and is halogen-free, as confirmed by Renesas' material declarations and product change notices. The URP package uses lead-free solderable terminations and environmentally compliant molding compound. Full compliance documentation is available through Renesas' official product portal using the part number HZU11C2LTRF-E.
Can HZU11C2LTRF-E replace standard Zeners like 1N4733A in existing designs?
Direct replacement is possible only if the PCB layout accommodates the SC-76A (URP) footprint and the application demands low noise and tight tempco. The HZU11C2LTRF-E has identical polarity (cathode-marked) but differs in package size, thermal profile, and electrical behavior - especially below 10 µA. Replacing 1N4733A (DO-35, 5.1 V, 1 W) requires verifying power derating, board thermal relief, and noise sensitivity. It is not a mechanical or electrical drop-in.
HZU11C2LTRF-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:
- -
HZU11C2LTRF-E FAQ
1.How can I place an order for HZU11C2LTRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU11C2LTRF-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 HZU11C2LTRF-E reliable?
The price and inventory of HZU11C2LTRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU11C2LTRF-E is usually 5 days.
3.What payment methods are accepted for HZU11C2LTRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU11C2LTRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU11C2LTRF-E?
HZU11C2LTRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU11C2LTRF-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 HZU11C2LTRF-E?
For technical support, including HZU11C2LTRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU11C2LTRF-E requirements.
6.How does Aetrix verify that HZU11C2LTRF-E is sourced from the original manufacturer or authorized distributors?
All HZU11C2LTRF-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 HZU11C2LTRF-E meets industry standards.
7.What is the process for return or replacement of HZU11C2LTRF-E?
All HZU11C2LTRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU11C2LTRF-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 HZU11C2LTRF-E part is unused and in its original packaging.
Return procedure for HZU11C2LTRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZU11C2LTRF-E Tags
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