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Renesas HZS2CLLTD-E
- Part No.:
- HZS2CLLTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS2CLLTD-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
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Inventory:147,500
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Product details
Overview
HZS2CLLTD-E from Renesas Electronics is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at low current (IZ = 0.5 µA to 0.5 mA), with nominal Zener voltage 2.4 V (min 2.2 V, max 2.6 V), dynamic impedance 350 Ω at IZT = 0.5 mA, and temperature coefficient ≤ ±0.6 mV/°C. It is used in precision analog front-ends and low-power sensor biasing circuits.
For engineers reviewing the HZS2CLLTD-E datasheet, HZS2CLLTD-E pinout, HZS2CLLTD-E application, or HZS2CLLTD-E equivalent, key selection criteria include its sharp breakdown knee below 1 µA, low noise in sub-mA operation, MHD package compatibility with 5 mm-pitch automated insertion, and suitability for stable low-current reference generation where thermal drift must be minimized.
Technical Context
The HZS2CLLTD-E employs a planar diffusion process to achieve semilogarithmic linear VZ–IZ characteristics from 1 nA to 1 mA, enabling precise low-current regulation. Its hard-knee behavior stems from controlled doping profiles that minimize curvature near breakdown, reducing linearity error (∆VZ1 = 0.5 V, ∆VZ2 = 0.6 V).
Designed for operation at IZK = 0.5 µA and IZT = 0.5 mA, it delivers low dynamic impedance (ZZT = 350 Ω typ) and ultra-low noise-approximately one-tenth that of conventional Zeners-due to reduced generation-recombination mechanisms in the depletion region.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.2 V min to 2.6 V max at IZ = 0.5 mA - defines stable reference range for low-voltage analog circuits |
| Dynamic Impedance (ZZT) | 350 Ω typical at IZT = 0.5 mA - ensures minimal output voltage shift under load variation |
| Zener Knee Current (IZK) | 0.5 µA max - enables functional regulation down to nanoampere-level bias currents |
| Temperature Coefficient (γZ) | ±0.6 mV/°C max - supports stable reference performance across –55°C to +125°C ambient |
| Power Dissipation (Pd) | 250 mW at Ta = 25°C - limits thermal rise in compact PCB layouts without forced cooling |
| Reverse Current (IR) | 100 nA max at VR = 0.5 V - guarantees high off-state impedance for leakage-sensitive designs |
Pinout & Package
The HZS2CLLTD-E is housed in the MHD package (JEITA code GRZZ0002ZC-A), a radial leaded, epoxy-molded case with 2.0 mm diameter body and 2.4 mm pitch, weighing 0.084 g. Cathode identified by navy blue band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity must be observed to avoid reverse conduction failure |
| 2 | Anode | Ground or current-sink return path; requires series resistor to limit IZ within 0.5 µA–0.5 mA operating window |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee breakdown | VZ–IZ curve remains linear from 1 nA to 1 mA, minimizing regulation error in micro-power systems |
| Low-noise operation | Approximately 1/10 the noise of standard Zeners-critical for high-resolution ADC references |
| Low-temperature drift | γZ ≤ ±0.6 mV/°C enables <±2 mV total drift over –40°C to +85°C industrial range |
| Automated assembly compatibility | MHD package meets 5 mm-pitch pick-and-place requirements for high-volume SMT-like throughput |
Applications
| Portable Medical Sensors | Industrial RTD Signal Conditioning |
|---|---|
Use Scenario: Battery-powered glucose monitor requiring stable 2.4 V reference for 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Low-current Zener reference providing excitation and scaling voltage for transducer interface. Use Value: Enables <1 µA quiescent current in sleep mode while maintaining ±0.5% reference accuracy over temperature. | Use Scenario: 4–20 mA loop transmitter with platinum RTD input and HART modulation. IC Role / Device Role / Timing Role: Precision shunt reference for current-source compliance and ADC full-scale calibration. Use Value: Delivers 350 Ω dynamic impedance and <0.6 mV/°C drift to hold loop accuracy within ±0.1% over –40°C to +70°C. |
| IoT Node Power Management | Test Equipment Bias Supplies |
Use Scenario: Sub-GHz wireless sensor node using ultra-low-power MCU with internal LDO dropout margin. IC Role / Device Role / Timing Role: Standby-mode voltage clamp preventing brown-out during RF transmit bursts. Use Value: Maintains regulation at 0.5 µA IZK, eliminating need for power-hungry active references in intermittent wake cycles. | Use Scenario: Benchtop multimeter front-end requiring traceable, low-drift DC reference for auto-ranging. IC Role / Device Role / Timing Role: Primary shunt reference for 7½-digit DMM digitizer stage calibration. Use Value: Achieves <100 nV/√Hz noise floor and <0.05% line regulation error due to hard-knee VZ stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5221BS | Zener voltage 2.4 V (same nominal), but higher ZZT = 600 Ω and γZ = ±2.0 mV/°C; rated Pd = 300 mW | Higher noise and drift limit use to non-critical biasing; better suited for general-purpose clamping | Select when cost sensitivity outweighs precision; not recommended for <16-bit measurement systems |
| Diodes Incorporated BZX84-C2V4 | Same SOT-23 package, but VZ tolerance ±5%, ZZT = 600 Ω, IR = 50 µA at VR = 1 V - significantly higher leakage | Unsuitable for nanoampere-biased circuits; acceptable only in high-current (>5 mA) regulator topologies | Choose only for legacy board reuse where MHD footprint is not required and leakage budget allows >10× HZS2CLLTD-E's IR |
Compared with MMBZ5221BS and BZX84-C2V4, the HZS2CLLTD-E provides superior low-current regulation fidelity, lower noise, and tighter thermal stability-making it the preferred choice for battery-operated instrumentation and high-resolution analog signal chains where reference integrity directly impacts measurement repeatability.
Availability
HZS2CLLTD-E is available at Aetrix Electronics and suitable for portable medical sensors, industrial RTD signal conditioning, and IoT node power management requiring stable component supply with guaranteed long-term continuity.
Supply support for HZS2CLLTD-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 enterprise applications.
The HZS-LL Series was developed specifically for precision low-noise voltage reference applications demanding hard-knee regulation at microampere currents-targeting high-accuracy sensor interfaces and portable instrumentation.
FAQ
What is the nominal Zener voltage of the HZS2CLLTD-E and how tightly is it specified?
The HZS2CLLTD-E has a nominal Zener voltage of 2.4 V, with a guaranteed range of 2.2 V minimum to 2.6 V maximum when tested at IZ = 0.5 mA. This ±0.2 V tolerance reflects tight process control for low-voltage reference applications, and the device maintains this specification across its qualified operating temperature range of –55°C to +125°C junction temperature.
Does the HZS2CLLTD-E support operation at very low current, and what is its minimum functional Zener current?
Yes, the HZS2CLLTD-E is specifically designed for low-current operation, with a maximum Zener knee current (IZK) of 0.5 µA. It delivers usable regulation starting from 1 nA, making it suitable for ultra-low-power systems such as energy-harvesting sensors and battery-backed real-time clocks where supply current must remain below 1 µA.
What is the dynamic impedance of the HZS2CLLTD-E and why does it matter for reference stability?
The HZS2CLLTD-E exhibits a typical dynamic impedance (ZZT) of 350 Ω at IZT = 0.5 mA. This low value ensures minimal output voltage variation under changing load conditions-critical for maintaining ADC reference accuracy and analog signal chain linearity. Lower ZZT directly translates to better PSRR and reduced sensitivity to upstream supply ripple.
Is the HZS2CLLTD-E RoHS compliant and what is its package construction?
Yes, the HZS2CLLTD-E is RoHS compliant per EU Directive 2011/65/EU. It uses an epoxy-molded MHD package (JEITA code GRZZ0002ZC-A) with radial leads, 2.0 mm body diameter, and navy blue cathode band marking. The package is rated for reflow soldering and compatible with standard 5 mm-pitch automatic insertion equipment.
How does the temperature coefficient of the HZS2CLLTD-E compare to standard Zener diodes, and what is its practical impact?
The HZS2CLLTD-E has a maximum Zener voltage temperature coefficient (γZ) of ±0.6 mV/°C, significantly lower than typical 2.4 V Zeners (often ±2.0 mV/°C or worse). Over a –40°C to +85°C ambient range, this yields <±0.075% total drift-enabling stable reference performance in unheated industrial enclosures without additional compensation circuitry.
HZS2CLLTD-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:
- -
HZS2CLLTD-E FAQ
1.How can I place an order for HZS2CLLTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS2CLLTD-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 HZS2CLLTD-E reliable?
The price and inventory of HZS2CLLTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS2CLLTD-E is usually 5 days.
3.What payment methods are accepted for HZS2CLLTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS2CLLTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS2CLLTD-E?
HZS2CLLTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS2CLLTD-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 HZS2CLLTD-E?
For technical support, including HZS2CLLTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS2CLLTD-E requirements.
6.How does Aetrix verify that HZS2CLLTD-E is sourced from the original manufacturer or authorized distributors?
All HZS2CLLTD-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 HZS2CLLTD-E meets industry standards.
7.What is the process for return or replacement of HZS2CLLTD-E?
All HZS2CLLTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS2CLLTD-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 HZS2CLLTD-E part is unused and in its original packaging.
Return procedure for HZS2CLLTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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