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Renesas HZK4CTR-S-E
- Part No.:
- HZK4CTR-S-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZK4CTR-S-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
HZK4CTR-S-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for voltage regulation in stabilized power supplies, with a nominal zener voltage of 3.7 V (Grade B), 500 mW power dissipation, ≤100 Ω dynamic resistance at 5 mA, and LLD surface-mount package. It operates across –55°C to +175°C storage range and supports precision low-voltage reference applications in compact consumer and industrial electronics.
For engineers reviewing the HZK4CTR-S-E datasheet, HZK4CTR-S-E pinout, HZK4CTR-S-E application, or HZK4CTR-S-E equivalent, key selection criteria include zener voltage tolerance (±0.3 V), low leakage current (≤5 µA at 0.5 V), thermal coefficient behavior (–3.5 mV/°C typical), and compatibility with high-density PCB assembly using its 1.4 mm diameter LLD package.
Technical Context
The HZK4CTR-S-E functions as a two-terminal shunt regulator, maintaining stable output voltage by conducting reverse current above its specified zener breakdown threshold. Its epitaxial planar construction ensures consistent breakdown characteristics and low noise performance under DC bias conditions.
It exhibits a negative temperature coefficient of –3.5 mV/°C near 3.7 V, enabling predictable drift compensation in temperature-sensitive references. The device is rated for 500 mW dissipation on standard FR-4 PCBs and requires no external biasing circuitry-operating solely with cathode-anode polarity and load-resistor configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.7 V (Grade B, min 3.7 V / max 4.1 V at IZ = 5 mA) - defines precise regulation point for low-voltage rails. |
| Power Dissipation (Pd) | 500 mW - maximum continuous DC power handling on standard PCB, limiting series resistor selection and thermal design margin. |
| Dynamic Resistance (rd) | ≤100 Ω at IZ = 5 mA - determines regulation stiffness and output impedance in feedback or reference paths. |
| Reverse Leakage Current (IR) | ≤5 µA at VR = 0.5 V - ensures minimal quiescent current draw below breakdown, critical for battery-powered circuits. |
| Junction Temperature (Tj) | 175°C - sets upper thermal limit for reliability under sustained power dissipation and ambient stress. |
| Package Type | LLD (1.4 mm Ø glass-passivated cylindrical SMD) - enables automated placement and high board density without leads. |
Pinout & Package
Package: LLD (Leadless Low-profile Diode), cylindrical surface-mount package with cathode band marking; dimensions: φ1.4 ± 0.1 mm × 3.5 mm height; mass: 0.027 g; JEDEC/JEITA unregistered.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to regulated voltage node; carries reverse current during regulation; marked with color band. |
| 2 (Anode) | Reference/ground terminal | Typically tied to system ground or lower-potential rail; completes current path through external series resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤100 Ω at 5 mA enables tight voltage regulation under varying load currents in feedback networks. |
| Wide zener voltage spectrum | 3.7 V nominal (B-grade) fits 3.3 V system rail stabilization and low-dropout reference needs. |
| High-temperature operation | Rated to 175°C junction temperature supports use in thermally constrained industrial enclosures. |
| LLD surface-mount package | 1.4 mm diameter allows >2× higher component density vs. DO-35, compatible with standard pick-and-place equipment. |
Applications
| USB Peripheral Power Regulation | Microcontroller Reset Circuit Reference |
|---|---|
Use Scenario: Regulating 3.3 V supply for USB HID devices with variable load current and ambient temperature shifts. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 3.7 V threshold for linear regulator input or LDO enable logic. Use Value: Maintains <±2% output stability over –25°C to +70°C due to predictable –3.5 mV/°C tempco and low rd. |
Use Scenario: Generating clean reset signal for 3.3 V microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Precision voltage threshold detector in RC-based reset generator, replacing less stable resistor-divider networks. Use Value: Delivers ≤5 µA leakage at 0.5 V, minimizing RC time constant error and improving reset timing accuracy. |
| IoT Sensor Node Voltage Reference | Industrial Control Signal Conditioning |
Use Scenario: Providing stable bias for analog sensor front-ends in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Low-power zener reference for ADC reference divider or op-amp offset trimming. Use Value: 500 mW rating allows safe operation with 10 kΩ series resistor at 12 V input, supporting multi-year battery life. |
Use Scenario: Stabilizing 4–20 mA transmitter loop voltage in factory automation modules exposed to 85°C ambient. IC Role / Device Role / Timing Role: Overvoltage clamp and rail stabilizer protecting analog front-end ICs from transient surges. Use Value: 175°C Tj rating ensures functional integrity without derating in sealed control cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C3V9 (ON Semiconductor) | 3.9 V nominal, DO-35 package (4.5 mm length), 500 mW, rd ≤ 90 Ω - slightly higher VZ, axial leaded form factor. | Requires PCB footprint redesign and manual or wave-solder process; unsuitable for ultra-dense layouts. | Select when legacy through-hole assembly or higher mechanical robustness is prioritized over board space. |
| MMSZ4685 (Diodes Inc.) | 3.68 V nominal, SOD-123 package (2.7 × 1.4 mm), 500 mW, rd ≤ 120 Ω - tighter VZ tolerance (±5%), but higher impedance. | Compatible with reflow-only processes but demands stricter layout control due to smaller pad area and thermal mass. | Prefer for cost-sensitive high-volume production where ±5% VZ tolerance suffices and SOD-123 footprint is already standardized. |
Compared with BZX55C3V9 and MMSZ4685, the HZK4CTR-S-E offers a unique combination of 3.7 V Grade B tolerance (±0.2 V), LLD's ultra-compact 1.4 mm diameter, and –3.5 mV/°C tempco optimized for mid-range low-voltage stabilization-making it especially suitable for space-constrained, thermally stable reference designs where DO-35 size or SOD-123 thermal limitations are unacceptable.
Availability
HZK4CTR-S-E is available at Aetrix Electronics and suitable for USB peripheral power regulation, microcontroller reset circuit reference, and IoT sensor node voltage reference requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for HZK4CTR-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 timing solutions for industrial, automotive, and consumer systems.
The HZK Series was developed by Renesas Electronics as a family of silicon epitaxial planar Zener diodes targeting high-reliability, low-noise voltage stabilization in compact power supply and reference applications.
FAQ
What is the exact zener voltage specification for HZK4CTR-S-E?
The HZK4CTR-S-E is a Grade B device with a zener voltage range of 3.7 V minimum to 4.1 V maximum at 5 mA test current. This 0.4 V span reflects its precision for 3.3 V system rail stabilization and ensures predictable clamping behavior in low-voltage reference circuits without requiring binning.
Does HZK4CTR-S-E have a documented temperature coefficient?
Yes, the HZK4CTR-S-E exhibits a typical zener voltage temperature coefficient of –3.5 mV/°C near its 3.7 V operating point, as confirmed in the HZK Series datasheet Figure 2. This negative coefficient enables predictable drift compensation in temperature-critical references and distinguishes it from higher-voltage Zeners with positive coefficients.
What is the maximum power dissipation rating for HZK4CTR-S-E?
The HZK4CTR-S-E has a maximum power dissipation rating of 500 mW at 25°C ambient when mounted on a standard printed circuit board. Derating is required above 25°C per the curve in Figure 3 of the datasheet, reaching ~300 mW at 70°C ambient, which directly impacts series resistor sizing and thermal management in final designs.
Is HZK4CTR-S-E RoHS compliant and lead-free?
Yes, HZK4CTR-S-E meets EU RoHS Directive requirements and is manufactured as a lead-free device. Renesas Electronics confirms environmental compliance in its product documentation and supports full material declarations upon request for qualifying customers engaged in regulated electronics production.
What does the "S-E" suffix indicate in HZK4CTR-S-E?
The "S-E" suffix in HZK4CTR-S-E denotes Renesas Electronics' internal packaging and testing variant: "S" indicates standard screening level (Standard quality grade), and "E" specifies tape-and-reel packaging format (10,000 pcs per reel), enabling automated SMT placement without manual handling or contamination risk.
HZK4CTR-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:
- -
HZK4CTR-S-E FAQ
1.How can I place an order for HZK4CTR-S-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK4CTR-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 HZK4CTR-S-E reliable?
The price and inventory of HZK4CTR-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 HZK4CTR-S-E is usually 5 days.
3.What payment methods are accepted for HZK4CTR-S-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK4CTR-S-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK4CTR-S-E?
HZK4CTR-S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK4CTR-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 HZK4CTR-S-E?
For technical support, including HZK4CTR-S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK4CTR-S-E requirements.
6.How does Aetrix verify that HZK4CTR-S-E is sourced from the original manufacturer or authorized distributors?
All HZK4CTR-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 HZK4CTR-S-E meets industry standards.
7.What is the process for return or replacement of HZK4CTR-S-E?
All HZK4CTR-S-E units undergo pre-shipment inspection (PSI). If there is an issue with HZK4CTR-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 HZK4CTR-S-E part is unused and in its original packaging.
Return procedure for HZK4CTR-S-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZK4CTR-S-E Tags
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MM5Z5V1ST1G
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