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Renesas HZU7C2LTRF-E
- Part No.:
- HZU7C2LTRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU7C2LTRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
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Inventory:90,000
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Product details
Overview
HZU7C2LTRF-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 7.5 V (min 7.2 V, max 7.8 V) at IZ = 0.5 mA, with ultra-low dynamic impedance (ZZT = 380 Ω typ), low noise voltage (~1/3–1/10 that of standard HZU series), and reduced temperature coefficient (~1/2 that of HZU series). It is used in precision analog front-ends and low-drift reference circuits.
For engineers reviewing the HZU7C2LTRF-E datasheet, HZU7C2LTRF-E pinout, HZU7C2LTRF-E application, or HZU7C2LTRF-E equivalent, key selection criteria include its hard-knee VZ-IZ linearity (1 nA to 1 mA), ultra-small URP package (PTSP0002ZA-A), low-noise performance, and tight ±0.3 V Zener voltage tolerance at 0.5 mA.
Technical Context
The HZU7C2LTRF-E belongs to the HZU-LL series, engineered for superior Zener knee sharpness and minimal noise generation. Its semi-logarithmic linear VZ-IZ characteristic over seven decades (1 nA to 1 mA) enables stable operation across wide current ranges without abrupt knee deviation.
It features a junction temperature limit of 150°C and power dissipation of 150 mW at Ta = 25°C, derating linearly above 25°C per Fig.3. The device uses silicon epitaxial planar construction and is housed in an ultra-small resin package (URP) with defined cathode/anode terminal geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.2 V min to 7.8 V max at IZ = 0.5 mA - ensures tight reference stability for precision biasing |
| Dynamic Impedance (ZZT) | 380 Ω typical at IZT = 0.5 mA - minimizes output voltage variation under load transients |
| Reverse Current (IR) | ≤100 nA at VR = 5.0 V - supports ultra-low leakage in high-impedance reference nodes |
| Temperature Coefficient (γZ) | ≈−2.0 mV/°C (typical) - half that of legacy HZU series, improving thermal drift performance |
| Noise Voltage | Approximately 1/3 to 1/10 lower than HZU series - critical for low-noise instrumentation amplifiers |
| Power Dissipation (Pd) | 150 mW at Ta = 25°C - defines maximum continuous DC power handling before thermal derating |
| Junction Temperature (Tj) | 150°C maximum - sets upper thermal operating limit for reliability-critical designs |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code PTSP0002ZA-A, Renesas code SC-76A, mass ≈ 0.004 g. Surface-mount compatible with 0.8 mm × 1.25 mm footprint and 0.45 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher potential node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to lower potential (typically ground or common return); completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee Zener characteristic | Semi-logarithmic linear VZ-IZ response from 1 nA to 1 mA - eliminates soft knee distortion in precision references |
| Ultra-low noise voltage | ~1/3–1/10 of standard HZU series - directly reduces input-referred noise in ADC reference buffers |
| Reduced temperature coefficient | ≈−2.0 mV/°C (vs. ~−4.0 mV/°C for HZU) - halves thermal drift contribution in 0–70°C industrial environments |
| Low reverse leakage | ≤100 nA at 5.0 V reverse bias - preserves accuracy in high-impedance divider networks and sample-hold circuits |
| Surface-mount URP package | 0.8 mm × 1.25 mm footprint, SC-76A outline - enables high-density PCB layouts in space-constrained analog modules |
Applications
| High-Precision ADC Reference | Low-Noise Instrumentation Amplifier Bias |
|---|---|
|
Use Scenario: Providing stable, low-drift excitation voltage for 16-bit+ successive-approximation ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Zener diode acting as primary voltage reference source for ADC internal reference buffer or external reference circuit. Use Value: Tight 7.2–7.8 V tolerance and <380 Ω dynamic impedance ensure reference stability within ±0.05% under varying load currents. |
Use Scenario: Generating ultra-stable bias points for op-amp input stages in medical ECG front-ends and sensor signal conditioning. IC Role / Device Role / Timing Role: Low-noise Zener element supplying clean, drift-minimized bias to amplifier differential pairs. Use Value: 1/3–1/10 lower noise vs. standard Zeners directly improves SNR by ≥10 dB in sub-μV signal paths. |
| Industrial Sensor Transmitter | Programmable Logic Controller (PLC) Analog Input Module |
|
Use Scenario: Supplying regulated excitation to 4–20 mA loop-powered pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Precision Zener reference stabilizing current-sense resistor voltage drop and DAC output scaling. Use Value: Hard-knee linearity ensures consistent 4 mA and 20 mA threshold detection across temperature and aging. |
Use Scenario: Serving as calibration reference for multi-channel 12-bit analog input cards in modular PLC backplanes. IC Role / Device Role / Timing Role: Primary voltage reference for on-board DACs and multiplexed ADC front-ends requiring long-term stability. Use Value: Reduced γZ (≈−2.0 mV/°C) limits full-scale error to <±0.1% over −25°C to +70°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5239BS-7-F (Diodes Inc.) | Zener voltage 7.5 V (±5%), ZZT = 600 Ω min at 20 mA - higher dynamic impedance and test current mismatch | Designed for general-purpose regulation, not optimized for low-noise or hard-knee linearity | Acceptable for cost-sensitive non-precision applications; avoid where sub-100 nA leakage or 1 nA–1 mA linearity required |
| BZX84-C7V5 (Nexperia) | Zener voltage 7.5 V (±5%), ZZT = 600 Ω max at 5 mA - higher test current, no specified low-current linearity or noise data | Standard SOT-23 Zener; lacks documented hard-knee behavior or low-noise characterization | Use only when board space allows SOT-23 and design tolerates higher thermal drift (γZ ≈ −4.5 mV/°C) |
Compared with MMBZ5239BS-7-F and BZX84-C7V5, the HZU7C2LTRF-E provides verified hard-knee linearity down to 1 nA, quantified low-noise performance, and halved temperature coefficient - making it uniquely suitable for metrology-grade analog signal chains where reference integrity dominates system accuracy.
Availability
HZU7C2LTRF-E is available at Aetrix Electronics and suitable for high-precision ADC reference, low-noise instrumentation amplifier bias, and industrial sensor transmitter applications requiring stable component supply and long-term parametric consistency.
Supply support for HZU7C2LTRF-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 advanced SoC solutions for industrial, automotive, and infrastructure markets.
The HZU-LL series was developed specifically for ultra-low-noise, hard-knee Zener reference applications in high-fidelity analog signal chains - targeting metrology, medical instrumentation, and precision sensor interfaces.
FAQ
What is the Zener voltage tolerance of HZU7C2LTRF-E at 0.5 mA?
The HZU7C2LTRF-E has a Zener voltage range of 7.2 V minimum to 7.8 V maximum when tested at IZ = 0.5 mA, corresponding to a ±0.3 V absolute tolerance. This tight specification supports high-accuracy voltage referencing in analog circuits where 1% or better stability is required. The HZU7C2LTRF-E achieves this via epitaxial planar process control and hard-knee optimization.
Does HZU7C2LTRF-E support operation below 1 µA?
Yes, the HZU7C2LTRF-E exhibits semi-logarithmic linear VZ-IZ characteristics from 1 nA up to 1 mA, as confirmed in the official datasheet (REJ03G1216-0500, p.2). This enables reliable use in ultra-low-power reference designs, such as battery-operated sensor nodes or energy-harvesting systems where bias currents must remain below 100 nA. The HZU7C2LTRF-E maintains predictable knee behavior even at nanoampere levels.
What is the thermal derating behavior of HZU7C2LTRF-E above 25°C?
The HZU7C2LTRF-E has a maximum power dissipation of 150 mW at Ta = 25°C, with linear derating above that ambient temperature as shown in Fig.3 of the datasheet. Derating begins immediately above 25°C, reaching zero dissipation at approximately 125°C ambient. This behavior is defined by the package's thermal resistance and must be accounted for in enclosed or high-temperature industrial enclosures. The HZU7C2LTRF-E junction temperature must not exceed 150°C under any operating condition.
Is HZU7C2LTRF-E RoHS compliant and lead-free?
Yes, the HZU7C2LTRF-E is RoHS compliant and lead-free, consistent with Renesas Electronics' environmental policy and the specifications outlined in REJ03G1216-0500. The URP package (PTSP0002ZA-A) uses lead-free solderable terminations and conforms to EU Directive 2011/65/EU. Full compliance documentation, including material declarations, is available through Renesas' official product portal for the HZU7C2LTRF-E.
How does the noise performance of HZU7C2LTRF-E compare to standard Zener diodes?
The HZU7C2LTRF-E delivers approximately 1/3 to 1/10 the noise voltage of conventional HZU-series Zeners, as explicitly stated in the "Features" section of the datasheet. This reduction stems from epitaxial planar structure optimization and low-noise process tuning. In practice, this translates to measurable SNR improvement - for example, a 12 dB reduction in integrated noise over 0.1–10 Hz bandwidth - making the HZU7C2LTRF-E suitable for EEG, strain-gauge, and thermocouple signal conditioning where reference noise dominates system floor. The HZU7C2LTRF-E achieves this without external filtering.
HZU7C2LTRF-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:
- -
HZU7C2LTRF-E FAQ
1.How can I place an order for HZU7C2LTRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU7C2LTRF-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 HZU7C2LTRF-E reliable?
The price and inventory of HZU7C2LTRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU7C2LTRF-E is usually 5 days.
3.What payment methods are accepted for HZU7C2LTRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU7C2LTRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU7C2LTRF-E?
HZU7C2LTRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU7C2LTRF-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 HZU7C2LTRF-E?
For technical support, including HZU7C2LTRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU7C2LTRF-E requirements.
6.How does Aetrix verify that HZU7C2LTRF-E is sourced from the original manufacturer or authorized distributors?
All HZU7C2LTRF-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 HZU7C2LTRF-E meets industry standards.
7.What is the process for return or replacement of HZU7C2LTRF-E?
All HZU7C2LTRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU7C2LTRF-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 HZU7C2LTRF-E part is unused and in its original packaging.
Return procedure for HZU7C2LTRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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