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Renesas HZK2CLLTR-S-E
- Part No.:
- HZK2CLLTR-S-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZK2CLLTR-S-E.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:20,255
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Product details
Overview
HZK2CLLTR-S-E from Renesas Electronics is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at low currents (IZ = 0.001–0.5 mA), with a nominal Zener voltage of 2.4 V (min 2.2 V, max 2.6 V), dynamic impedance ZZK ≤ 50 Ω at IZK = 0.5 μA, and power dissipation rating of 250 mW in LLD surface-mount package. It serves precision biasing and noise-sensitive analog front-ends in portable instrumentation.
For engineers reviewing the HZK2CLLTR-S-E datasheet, HZK2CLLTR-S-E pinout, HZK2CLLTR-S-E application, or HZK2CLLTR-S-E equivalent, key selection criteria include its low-noise hard-knee Zener behavior below 1 mA, temperature coefficient of approximately −1.5 mV/°C near 2.4 V, and suitability for space-constrained, low-power reference designs requiring stable knee characteristics.
Technical Context
This device belongs to the HZK-LL series, engineered specifically for low-current Zener operation where conventional zeners exhibit high dynamic impedance and excess noise. Its planar structure and optimized doping profile yield a sharp, repeatable breakdown knee at ~2.4 V with minimal voltage hysteresis.
It operates within a junction temperature range of −55°C to +175°C and is rated for 250 mW power dissipation on standard PCB mounting. The LLD package supports high-density SMT assembly and provides thermal performance consistent with JEITA code GLZZ0002ZA-A and Renesas package code LLD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.2 V to 2.6 V at IZ = 0.5 mA - defines tight tolerance band for low-voltage reference stability |
| Dynamic Impedance (ZZK) | ≤ 50 Ω at IZK = 0.5 μA - ensures minimal AC impedance and low noise in microampere-biased circuits |
| Reverse Current (IR) | ≤ 100 nA at VR = 0.5 V - guarantees ultra-low leakage for battery-powered reference nodes |
| Power Dissipation (Pd) | 250 mW at Ta = 25°C - sets maximum continuous DC power handling on standard FR-4 PCB |
| Junction Temperature (Tj) | −55°C to +175°C - enables operation in extended industrial and automotive under-hood environments |
| Temperature Coefficient (γZ) | ≈ −1.5 mV/°C near 2.4 V - quantifies predictable, linear drift for compensated reference designs |
Pinout & Package
The HZK2CLLTR-S-E is housed in the LLD (Leadless Low-profile Diode) package - a 2-pin, surface-mount, molded plastic case measuring 2.5 mm × 3.0 mm × 1.6 mm (L × W × H), with cathode identified by a color-coded band and conforming to JEITA package code GLZZ0002ZA-A.
| 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 node (typically ground or common return); completes bias path |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee Zener characteristic | Sharp, repeatable breakdown onset below 1 mA enables accurate low-current referencing without soft turn-on ambiguity |
| Low dynamic impedance at microampere currents | ZZK ≤ 50 Ω at IZK = 0.5 μA reduces output noise and improves regulation in ultra-low-power sensor biasing |
| Low-noise operation | Approximately 1/10 the noise of standard zeners in the 0.001–0.5 mA range - critical for precision ADC references |
| LLD surface-mount package | 2.5 mm × 3.0 mm footprint supports high-density PCB layouts and automated high-speed placement |
Applications
| Portable Medical Sensors | Industrial RTD Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered handheld pulse oximeters requiring stable 2.4 V reference for analog front-end amplification and 16-bit ADC conversion. IC Role / Device Role / Timing Role: Precision low-current Zener reference diode providing excitation and scaling voltage for transimpedance amplifier and ratiometric ADC reference. Use Value: Enables sub-0.1% gain stability over temperature and time due to hard-knee behavior and low ZZK, reducing calibration frequency. |
Use Scenario: Two-wire RTD measurement module in programmable logic controller (PLC) analog input card operating from 3.3 V rail. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference for constant-current source driving 100 Ω Pt100 RTD. Use Value: Maintains <±0.05 °C measurement accuracy across −25°C to +70°C ambient via predictable γZ ≈ −1.5 mV/°C and low IR leakage. |
| Low-Power IoT Node Biasing | Automotive Cabin Sensor Reference |
|
Use Scenario: Sub-μA wake-up circuit in NB-IoT environmental sensor node using nanopower op-amps and SAR ADCs. IC Role / Device Role / Timing Role: Ultra-low-leakage Zener element establishing bias point for comparator hysteresis and ADC reference divider network. Use Value: IR ≤ 100 nA at 0.5 V prevents loading of high-impedance bias networks, extending battery life beyond 10 years in sleep mode. |
Use Scenario: Occupancy and air quality sensor cluster mounted behind automotive dashboard, exposed to 105°C peak ambient. IC Role / Device Role / Timing Role: High-temperature-stable Zener reference supplying regulated voltage to MEMS pressure and VOC sensor signal chains. Use Value: Tj rating up to +175°C and tested reliability at 125°C ambient ensure functional integrity without derating in confined cabin enclosures. |
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 MMBZ5222BS | Zener voltage 2.4 V ±5%, ZZT = 25 Ω at 20 mA (not specified at μA), higher noise above 100 kHz | Optimized for higher-current regulation (>5 mA); unsuitable for sub-100 μA biasing | Select HZK2CLLTR-S-E when reference current is <1 mA and noise <10 μVRMS is required |
| Vishay BZX84-C2V4 | Zener voltage 2.4 V ±5%, ZZT = 60 Ω at 5 mA, no ZZK spec below 1 mA, typical IR = 1 μA at 1 V | General-purpose SOT-23 Zener; lacks hard-knee optimization and low-noise validation at microampere levels | Choose HZK2CLLTR-S-E for applications demanding verified low-noise knee behavior and guaranteed ZZK ≤ 50 Ω at 0.5 μA |
Compared with MMBZ5222BS and BZX84-C2V4, the HZK2CLLTR-S-E delivers uniquely validated low-impedance, low-noise performance below 1 mA - making it the only option among the three qualified for precision microampere-biased reference topologies in portable and industrial sensing.
Availability
HZK2CLLTR-S-E is available at Aetrix Electronics and suitable for portable medical sensors, industrial RTD signal conditioning, and low-power IoT node biasing requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for HZK2CLLTR-S-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 systems.
The HZK-LL series was designed specifically for low-current, low-noise Zener reference applications - targeting portable instrumentation, precision sensor interfaces, and space-constrained analog biasing where conventional zeners fail to deliver stable knee behavior.
FAQ
What is the Zener voltage tolerance of the HZK2CLLTR-S-E?
The HZK2CLLTR-S-E has a Zener voltage range of 2.2 V to 2.6 V at IZ = 0.5 mA, corresponding to a nominal 2.4 V with ±0.2 V absolute tolerance. This tight spread is achieved through process-controlled planar diffusion and is verified per Renesas REJ03G0183-0300 Rev.3.00 test conditions. The HZK2CLLTR-S-E maintains this specification across its qualified operating temperature range.
Does the HZK2CLLTR-S-E support operation at junction temperatures above 125°C?
Yes, the HZK2CLLTR-S-E is rated for junction temperatures from −55°C to +175°C per its Absolute Maximum Ratings table. It has been characterized and qualified for continuous operation at 150°C junction temperature in standard PCB mounting, making it suitable for under-hood automotive and industrial control applications where thermal margins are constrained. The HZK2CLLTR-S-E's LLD package contributes to reliable thermal transfer in these conditions.
How does the HZK2CLLTR-S-E achieve lower noise than standard Zener diodes?
The HZK2CLLTR-S-E achieves approximately one-tenth the noise of conventional zeners in the 0.001–0.5 mA range through proprietary planar junction design and optimized doping profiles that minimize avalanche noise generation and surface leakage contributions. Renesas specifies this performance explicitly in the HZK-LL Series datasheet (REJ03G0183-0300), contrasting it with legacy zener structures. The HZK2CLLTR-S-E's low ZZK and hard-knee behavior further suppress modulation of noise by supply ripple.
Is the HZK2CLLTR-S-E RoHS compliant and lead-free?
Yes, the HZK2CLLTR-S-E complies with the EU RoHS Directive and is manufactured as a lead-free device. Renesas confirms RoHS compliance for the entire HZK-LL series in its environmental documentation and product change notices. The LLD package uses matte tin termination, and material declarations confirm absence of restricted substances above threshold limits. The HZK2CLLTR-S-E meets JESD97 and JEDEC JS-001 ESD standards as part of its qualification.
What is the meaning of "TR-S-E" in the HZK2CLLTR-S-E part number?
The suffix "TR-S-E" in HZK2CLLTR-S-E denotes tape-and-reel packaging (TR), standard-grade reliability (S), and RoHS-compliant, lead-free finish (E). This matches Renesas' standardized ordering code convention for the HZK-LL series, where "TR" indicates 3,000 pcs/reel, "S" reflects Standard quality grade (suitable for industrial/commercial applications), and "E" certifies lead-free and RoHS conformance. The HZK2CLLTR-S-E is not rated for automotive AEC-Q200 or "High Quality" applications unless separately qualified.
HZK2CLLTR-S-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:
- -
HZK2CLLTR-S-E FAQ
1.How can I place an order for HZK2CLLTR-S-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK2CLLTR-S-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 HZK2CLLTR-S-E reliable?
The price and inventory of HZK2CLLTR-S-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZK2CLLTR-S-E is usually 5 days.
3.What payment methods are accepted for HZK2CLLTR-S-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK2CLLTR-S-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK2CLLTR-S-E?
HZK2CLLTR-S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK2CLLTR-S-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 HZK2CLLTR-S-E?
For technical support, including HZK2CLLTR-S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK2CLLTR-S-E requirements.
6.How does Aetrix verify that HZK2CLLTR-S-E is sourced from the original manufacturer or authorized distributors?
All HZK2CLLTR-S-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 HZK2CLLTR-S-E meets industry standards.
7.What is the process for return or replacement of HZK2CLLTR-S-E?
All HZK2CLLTR-S-E units undergo pre-shipment inspection (PSI). If there is an issue with HZK2CLLTR-S-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 HZK2CLLTR-S-E part is unused and in its original packaging.
Return procedure for HZK2CLLTR-S-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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