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Renesas HZK2CTR-S-E
- Part No.:
- HZK2CTR-S-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZK2CTR-S-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
HZK2CTR-S-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies. It delivers a nominal zener voltage of 2.2 V (Grade C), with maximum zener impedance of 100 Ω at 5 mA, 500 mW power dissipation, and operates within –55°C to +175°C storage temperature range. It is used in voltage reference circuits for analog sensors and microcontroller reset supervision.
For engineers reviewing the HZK2CTR-S-E datasheet, HZK2CTR-S-E pinout, HZK2CTR-S-E application, or HZK2CTR-S-E equivalent, key selection criteria include verified zener voltage tolerance (±0.4 V), low leakage current (≤5 µA at 0.5 V), thermal coefficient behavior below 2.5 V, and LLD surface-mount package compatibility with high-density PCB layouts.
Technical Context
The HZK2CTR-S-E employs a planar epitaxial junction structure optimized for stable reverse breakdown with minimal voltage drift over temperature. Its zener voltage is specified at 5 mA test current, with dynamic resistance measured under DC conditions - confirming suitability for low-noise reference applications rather than transient suppression.
This device belongs to the HZK Series' low-voltage segment (1.9–38 V), where Grade C variants like HZK2CTR-S-E provide tighter VZ tolerance (2.2–2.6 V) versus Grades A/B. The LLD package enables automated placement and supports thermal dissipation up to 500 mW on standard FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.2 V to 2.6 V at IZ = 5 mA - defines stable regulation point for low-voltage biasing and reference generation. |
| Power Dissipation (Pd) | 500 mW - supports continuous operation in compact SMT designs without forced cooling. |
| Zener Impedance (rd) | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage variation under load changes. |
| Reverse Leakage (IR) | ≤5 µA at VR = 0.5 V - critical for low-power standby circuits and battery-backed systems. |
| Junction Temperature (Tj) | 175°C - enables reliable operation in industrial ambient environments up to 125°C with derating. |
| Package | LLD - ultra-compact leadless surface-mount package (1.4 mm Ø, 0.027 g) for high-density assembly. |
Pinout & Package
Package: LLD - leadless, circular, surface-mount diode package with cathode band marking; dimensions: φ1.4 ± 0.1 mm, height ~0.35 mm (typical); mass: 0.027 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to regulated output node; polarity must be observed to maintain zener conduction mode. |
| 2 (Anode) | Forward reference terminal | Typically grounded or tied to lowest system potential; establishes reference for VZ measurement. |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤100 Ω ensures <1% output deviation across 1–10 mA load variations in reference circuits. |
| Wide operating temperature range | –55°C to +175°C junction rating allows use in automotive engine control modules and industrial motor drives. |
| Stable low-voltage regulation | 2.2–2.6 V Grade C tolerance supports accurate 2.5 V rail derivation with external resistor scaling. |
| High-density LLD packaging | φ1.4 mm footprint reduces PCB area by >60% vs. traditional DO-35, enabling miniaturized sensor nodes. |
Applications
| Microcontroller Reset Circuit | Analog Sensor Biasing |
|---|---|
Use Scenario: Generating a stable 2.5 V threshold for brown-out detection in 3.3 V MCU systems. IC Role / Device Role / Timing Role: Voltage reference element defining reset activation level. Use Value: Tight 2.2–2.6 V tolerance and low rd ensure consistent reset timing across temperature and supply variance. |
Use Scenario: Providing excitation voltage to resistive bridge sensors in portable instrumentation. IC Role / Device Role / Timing Role: Low-drift DC reference source for ratiometric signal conditioning. Use Value: ≤5 µA leakage prevents loading error in high-impedance sensor interfaces. |
| Low-Power RTC Backup | Industrial Signal Conditioning |
Use Scenario: Regulating backup voltage for real-time clock ICs powered from coin cells. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining stable VREF during main supply dropout. Use Value: 500 mW Pd and 175°C Tj support long-term reliability in sealed enclosures. |
Use Scenario: Stabilizing reference input for 12-bit ADCs in PLC analog input modules. IC Role / Device Role / Timing Role: Primary voltage reference in isolated signal chains. Use Value: Low temperature coefficient below 2.5 V minimizes gain drift over –40°C to +85°C operating range. |
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 |
|---|---|---|---|
| BZX55C2V4 (ON Semiconductor) | VZ = 2.4 V ±5%, Pd = 500 mW, DO-35 package (3.5 mm length) | Larger footprint; higher thermal resistance; less suitable for ultra-dense layouts | Preferred when legacy through-hole assembly or higher surge robustness is required. |
| MMSZ4678 (Diodes Inc.) | VZ = 2.4 V ±5%, SOD-123 package, rd = 120 Ω, IR = 50 µA @ 1 V | Higher leakage and impedance reduce accuracy in precision references | Acceptable for non-critical biasing where cost and availability outweigh tight regulation needs. |
Compared with BZX55C2V4 and MMSZ4678, the HZK2CTR-S-E offers tighter VZ tolerance (±0.2 V vs. ±0.12 V), lower leakage (<5 µA vs. ≥50 µA), and smaller LLD footprint - making it optimal for space-constrained, high-accuracy 2.2–2.6 V reference designs.
Availability
HZK2CTR-S-E is available at Aetrix Electronics and suitable for microcontroller reset circuits, analog sensor biasing, low-power RTC backup, and industrial signal conditioning requiring stable component supply and long-lifecycle sourcing.
Supply support for HZK2CTR-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices, with global design and manufacturing infrastructure.
The HZK Series was developed by Renesas Electronics for precision voltage stabilization in industrial and consumer power management systems, emphasizing low impedance, wide VZ coverage, and high-reliability SMT packaging.
FAQ
What is the exact zener voltage range for HZK2CTR-S-E?
The HZK2CTR-S-E has a guaranteed zener voltage range of 2.2 V to 2.6 V at IZ = 5 mA, corresponding to Grade C specification per the official Renesas HZK Series datasheet Rev.3.00. This tolerance is tighter than Grade A/B variants and is confirmed for the HZK2CTR-S-E marking code.
Is HZK2CTR-S-E compatible with reflow soldering processes?
Yes, the HZK2CTR-S-E in its LLD package is qualified for standard Pb-free reflow profiles (J-STD-020), with peak temperatures up to 260°C. Its glass-passivated silicon junction and compact geometry ensure reliability under repeated thermal cycling typical in high-volume SMT assembly.
Does HZK2CTR-S-E meet RoHS requirements?
Yes, HZK2CTR-S-E complies with EU RoHS Directive 2011/65/EU and subsequent amendments. Renesas Electronics confirms lead-free terminations and absence of restricted substances, as documented in their environmental compliance statements dated post-2006.
What is the thermal resistance (RθJA) of HZK2CTR-S-E on a standard PCB?
Renesas specifies no explicit RθJA value for the LLD package in isolation, but thermal performance data shows 500 mW power dissipation is sustainable at TA = 25°C on a 15 × 20 × 1.6 mm glass-epoxy PCB. Derating begins linearly above 25°C ambient, reaching zero dissipation at ~125°C ambient per Figure 3 in the datasheet.
Can HZK2CTR-S-E be used as a substitute for HZK2B or HZK2C?
Yes - HZK2CTR-S-E is a Renesas-authorized marking variant of the HZK2C grade, sharing identical electrical specifications (2.2–2.6 V VZ, 100 Ω rd, 5 µA IR) and LLD packaging. The "TR-S-E" suffix denotes tape-and-reel packaging with enhanced moisture sensitivity level (MSL) handling per J-STD-020.
HZK2CTR-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:
- -
HZK2CTR-S-E FAQ
1.How can I place an order for HZK2CTR-S-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK2CTR-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 HZK2CTR-S-E reliable?
The price and inventory of HZK2CTR-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 HZK2CTR-S-E is usually 5 days.
3.What payment methods are accepted for HZK2CTR-S-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK2CTR-S-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK2CTR-S-E?
HZK2CTR-S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK2CTR-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 HZK2CTR-S-E?
For technical support, including HZK2CTR-S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK2CTR-S-E requirements.
6.How does Aetrix verify that HZK2CTR-S-E is sourced from the original manufacturer or authorized distributors?
All HZK2CTR-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 HZK2CTR-S-E meets industry standards.
7.What is the process for return or replacement of HZK2CTR-S-E?
All HZK2CTR-S-E units undergo pre-shipment inspection (PSI). If there is an issue with HZK2CTR-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 HZK2CTR-S-E part is unused and in its original packaging.
Return procedure for HZK2CTR-S-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZK2CTR-S-E Tags
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