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Renesas HZK4CLLTR-S-E
- Part No.:
- HZK4CLLTR-S-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZK4CLLTR-S-E.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
HZK4CLLTR-S-E from Renesas Electronics is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at 4.0–4.4 V nominal Zener voltage, with 250 mW power dissipation, 370 Ω dynamic impedance at 2 mA test current, and operation up to 175°C junction temperature. It serves as a precision shunt reference in analog sensor signal conditioning and low-power regulator feedback paths.
For engineers reviewing the HZK4CLLTR-S-E datasheet, HZK4CLLTR-S-E pinout, HZK4CLLTR-S-E application, or HZK4CLLTR-S-E equivalent, key selection criteria include its low dynamic impedance in the 0.5–2 mA range, tight 4.0–4.4 V Zener voltage tolerance, LLD surface-mount package compatibility, and −0.03%/°C temperature coefficient near 4.2 V.
Technical Context
This device belongs to the HZK-LL Series, engineered for stable low-current Zener operation with hard-knee characteristics-minimizing voltage deviation below knee current (IZK = 0.5 μA) and enabling reliable regulation down to 10 μA. Its planar construction ensures reproducible breakdown behavior and low noise versus conventional diffused Zeners.
The LLD package supports high-density PCB layouts and reflow-compatible assembly. Electrical performance is specified at Ta = 25°C with derating above 25°C per Fig.3; thermal resistance from junction-to-ambient is ~600°C/W on standard FR-4 board per typical layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.0–4.4 V at IZT = 2 mA - defines stable reference point for feedback or biasing circuits requiring ±5% tolerance. |
| Dynamic Impedance (ZZT) | 370 Ω typ. at IZT = 2 mA - determines output voltage stability under load variation; lower than legacy zeners by ~10× in sub-mA region. |
| Reverse Current (IR) | ≤100 nA at VR = 1.0 V - ensures minimal leakage in high-impedance reference nodes and battery-powered standby circuits. |
| Power Dissipation (Pd) | 250 mW at Ta = 25°C - sets maximum continuous DC power handling on standard PCB; derates linearly to zero at 150°C ambient. |
| Junction Temperature (Tj) | −55 to +175°C - enables use in industrial and automotive under-hood environments where thermal cycling and peak temperatures exceed 125°C. |
| Temperature Coefficient (γZ) | −0.03%/°C near 4.2 V - minimizes drift in precision references; polarity and magnitude confirmed from Fig.2 curve for HZK4CLL variant. |
Pinout & Package
The HZK4CLLTR-S-E is housed in the LLD (Leadless Low-profile Diode) package: 3.3–3.6 mm length × 1.25–1.45 mm width × ~0.9 mm height, glass epoxy molded, cathode-banded surface-mount device weighing ~0.027 g. Designed for solder reflow per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; reverse-biased terminal carrying Zener current into reference circuit. |
| 2 | Anode | Connected to ground or lowest potential rail; completes current path during Zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee Zener characteristic | Sharp, well-defined breakdown onset at IZK = 0.5 μA - enables stable regulation even at microamp-level bias currents. |
| Low dynamic impedance | 370 Ω typical at 2 mA - reduces output voltage ripple and improves PSRR in shunt-regulated supplies. |
| Low noise performance | ≈1/10 noise of conventional Zeners in 0.01–1 mA range - critical for high-resolution ADC references and precision op-amp biasing. |
| LLD surface-mount package | 0.9 mm profile, 3.5 mm × 1.35 mm footprint - supports compact, automated assembly in space-constrained IoT and portable designs. |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Voltage Reference for ADCs |
|---|---|
Use Scenario: Providing stable excitation voltage and reference for bridge-based pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Shunt voltage reference establishing 4.2 V reference rail for instrumentation amplifier gain-setting and 12-bit SAR ADC VREF input. Use Value: Hard-knee behavior ensures regulation remains active even during sensor sleep-mode leakage currents (<10 μA), maintaining system readiness without wake-up delay. |
Use Scenario: Supplying precise VREF to 16-bit delta-sigma ADCs in battery-powered environmental monitoring nodes. IC Role / Device Role / Timing Role: Low-noise, low-drift Zener reference replacing higher-power bandgap ICs to extend battery life while preserving ENOB > 14 bits. Use Value: 100 nA max reverse leakage at 1 V and −0.03%/°C TC minimize reference error contribution across −40°C to +85°C operating range. |
| Feedback Element in Isolated DC-DC Converters | Overvoltage Clamp in USB-C Power Delivery Circuits |
Use Scenario: Secondary-side voltage sensing in flyback converters powering industrial HMIs with 24 V input and 5 V/3.3 V isolated outputs. IC Role / Device Role / Timing Role: Zener clamping element in optocoupler feedback loop, setting regulated output voltage via TL431-like topology. Use Value: 250 mW rating and 175°C Tj allow direct mounting near transformer, reducing thermal coupling errors and eliminating need for remote sensing traces. |
Use Scenario: Fast-acting overvoltage protection on VBUS line of USB-C PD sink ports rated for 20 V max. IC Role / Device Role / Timing Role: Standby-mode clamp limiting transient overshoot to ≤4.4 V before TVS activation, protecting downstream USB PD controller. Use Value: Sub-μA leakage and sharp knee enable clamping without loading the 5–20 V dynamically negotiated bus during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V3 (Nexperia) | 4.3 V nominal, ±5% tolerance, 625 mW Pd, SOT-23 package, 90 Ω ZZT at 5 mA - higher power but looser voltage tolerance and no hard-knee optimization. | Used in general-purpose regulation where ±5% VZ and higher current (>5 mA) are acceptable; not recommended for <100 μA bias or low-noise ADC refs. | Select only when higher power headroom and SOT-23 compatibility outweigh need for low-current stability and noise performance. |
| MMSZ4685 (ON Semiconductor) | 4.3 V nominal, ±5%, 500 mW Pd, SOD-123 package, 150 Ω ZZT at 1 mA - better impedance than BZX84 but lacks documented hard-knee behavior and low-noise validation. | Suitable for mid-current shunt regulation (1–10 mA); insufficient data on microamp-region knee sharpness or noise spectral density for precision analog use. | Preferable over BZX84 for tighter impedance, but verify knee consistency and noise in target bias range before substituting for HZK4CLLTR-S-E. |
Compared with BZX84-C4V3 and MMSZ4685, the HZK4CLLTR-S-E delivers superior low-current regulation stability, quantifiably lower noise, and verified hard-knee behavior-making it uniquely suitable for precision analog systems operating below 100 μA, whereas alternatives serve broader, less demanding regulation roles.
Availability
HZK4CLLTR-S-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, low-power ADC references, and isolated DC-DC feedback loops requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant sourcing.
Supply support for HZK4CLLTR-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 specializing in microcontrollers, analog, power, and connectivity solutions for industrial, automotive, and enterprise applications.
The HZK-LL Series was developed specifically for high-stability, low-noise Zener reference applications in space-constrained, thermally demanding environments-emphasizing hard-knee behavior and microamp-level regulation fidelity.
FAQ
What is the Zener voltage tolerance of the HZK4CLLTR-S-E?
The HZK4CLLTR-S-E has a guaranteed Zener voltage range of 4.0 V to 4.4 V at IZT = 2 mA, representing a ±5% tolerance centered at 4.2 V. This specification is validated per Renesas REJ03G0183-0300 Rev.3.00 and applies across the full operating temperature range when derated per Fig.3.
Does the HZK4CLLTR-S-E support operation below 100 μA?
Yes-the HZK4CLLTR-S-E exhibits hard-knee behavior with defined regulation starting at IZK = 0.5 μA, and maintains usable voltage stability down to 10 μA. Its low dynamic impedance and low noise are explicitly characterized in the 0.001–0.5 mA region, making it suitable for ultra-low-power reference designs where other Zeners fail to regulate.
What is the thermal resistance of the HZK4CLLTR-S-E in standard PCB mounting?
While not directly specified in the datasheet, thermal characterization of the LLD package on a 15 × 20 × 1.6 mm glass-epoxy PCB (per Fig.3 test condition) yields an estimated junction-to-ambient thermal resistance of approximately 600°C/W. This value supports operation up to 175°C junction temperature with appropriate ambient derating.
Is the HZK4CLLTR-S-E RoHS compliant and lead-free?
Yes-the HZK4CLLTR-S-E meets RoHS Directive 2011/65/EU requirements. Renesas confirms lead-free termination and halogen-free molding compound per their environmental compliance documentation referenced in REJ03G0183-0300, and the part carries the "-S-E" suffix denoting RoHS-compliant packaging.
Can the HZK4CLLTR-S-E replace standard 1N4733A-type Zeners?
No-the HZK4CLLTR-S-E is not a drop-in replacement for 1N4733A (5.1 V, 1 W, DO-41). It operates at 4.2 V nominal, dissipates only 250 mW, uses LLD surface-mount packaging, and targets low-noise, low-current applications-not general-purpose power regulation. Substitution requires circuit redesign for voltage, power, and footprint.
HZK4CLLTR-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:
- -
HZK4CLLTR-S-E FAQ
1.How can I place an order for HZK4CLLTR-S-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK4CLLTR-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 HZK4CLLTR-S-E reliable?
The price and inventory of HZK4CLLTR-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 HZK4CLLTR-S-E is usually 5 days.
3.What payment methods are accepted for HZK4CLLTR-S-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK4CLLTR-S-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK4CLLTR-S-E?
HZK4CLLTR-S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK4CLLTR-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 HZK4CLLTR-S-E?
For technical support, including HZK4CLLTR-S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK4CLLTR-S-E requirements.
6.How does Aetrix verify that HZK4CLLTR-S-E is sourced from the original manufacturer or authorized distributors?
All HZK4CLLTR-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 HZK4CLLTR-S-E meets industry standards.
7.What is the process for return or replacement of HZK4CLLTR-S-E?
All HZK4CLLTR-S-E units undergo pre-shipment inspection (PSI). If there is an issue with HZK4CLLTR-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 HZK4CLLTR-S-E part is unused and in its original packaging.
Return procedure for HZK4CLLTR-S-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZK4CLLTR-S-E Tags
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