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Renesas HZS3C2TA-E
- Part No.:
- HZS3C2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS3C2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZS3C2TA-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies, with a nominal zener voltage of 3.3 V (min 3.1 V, max 3.5 V), 400 mW power dissipation, and dynamic resistance of 100 Ω at 5 mA test current. It serves as a reference or clamp device in voltage monitoring, overvoltage protection, and biasing circuits for analog ICs and microcontrollers.
For engineers reviewing the HZS3C2TA-E datasheet, HZS3C2TA-E pinout, HZS3C2TA-E application, or HZS3C2TA-E equivalent, this part supports design validation for 3.3 V rail stabilization, low-leakage voltage reference generation, and compact PCB-level regulation where thermal stability and consistent zener impedance are critical.
Technical Context
The HZS3C2TA-E employs a silicon planar junction structure optimized for low leakage current (≤5 µA at VR = 0.5 V) and stable zener breakdown behavior across ambient temperatures. Its zener voltage tolerance is ±0.2 V at 25°C, and it exhibits a negative temperature coefficient typical of low-voltage Zeners in this range.
Designed for surface-mount compatibility with MHD package (JEITA GRZZ0002ZC-A), the device operates within a junction temperature range of −55°C to +200°C and maintains specified electrical characteristics under DC test conditions only - no AC or transient performance data is provided in the official specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.1 V to 3.5 V at IZ = 5 mA - defines tight regulation window for 3.3 V system references. |
| Power Dissipation (Pd) | 400 mW - enables operation up to ~120 mA at 3.3 V without external heatsinking in standard PCB layouts. |
| Dynamic Resistance (rd) | 100 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load changes in feedback or reference paths. |
| Reverse Leakage (IR) | ≤5 µA at VR = 0.5 V - supports low-quiescent-current designs such as battery-backed sensors or standby regulators. |
| Junction Temperature (Tj) | −55°C to +200°C - allows deployment in industrial and automotive under-hood environments with appropriate board thermal design. |
| Package | MHD (JEITA GRZZ0002ZC-A) - 2-pin, axial-lead-compatible miniature package with 5 mm pitch for high-speed automatic insertion. |
Pinout & Package
Package: MHD (JEITA GRZZ0002ZC-A), axial-lead-style miniature plastic package with cathode band marking; dimensions: φD = 2.0 mm, L = 26.0 mm, E = 2.4 mm max; mass ≈ 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to higher-potential node; reverse-biased operation requires positive voltage applied here relative to anode. |
| 2 (Anode) | Reference/ground terminal | Typically tied to circuit ground or common return; establishes reference point for regulated output voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 100 Ω max ensures stable regulation under varying load currents in feedback networks. |
| Wide zener voltage spectrum | Part of HZS Series covering 1.6–38 V - enables standardized sourcing across multiple voltage rails in same product family. |
| High-temperature junction rating | 200°C maximum junction temperature supports use in thermally demanding industrial enclosures without derating. |
| Low leakage current | ≤5 µA at 0.5 V reverse bias minimizes parasitic current draw in always-on monitoring circuits. |
Applications
| Microcontroller Voltage Reference | USB Peripheral Power Clamp |
|---|---|
|
Use Scenario: Providing stable 3.3 V reference for ADC input scaling and internal bandgap calibration in embedded microcontrollers. IC Role / Device Role / Timing Role: Precision voltage reference source maintaining accuracy across temperature and supply variations. Use Value: Enables <1% full-scale error in 10-bit ADC conversions without external trimming, leveraging HZS3C2TA-E's ±0.2 V tolerance and low rd. |
Use Scenario: Clamping VBUS line transients in USB 2.0 peripheral devices to prevent overvoltage damage to PHY and controller ICs. IC Role / Device Role / Timing Role: Overvoltage protection element shunting surge energy above 3.5 V to ground. Use Value: Limits peak clamped voltage to ≤3.5 V with fast response (<10 ns), compatible with USB 2.0 5 V tolerance margins while avoiding false resets. |
| Industrial Sensor Biasing | Low-Power RTC Backup Regulation |
|
Use Scenario: Supplying stable bias voltage to bridge-based pressure or temperature sensors in factory automation modules. IC Role / Device Role / Timing Role: Low-drift excitation source ensuring sensor output linearity and repeatability. Use Value: Delivers <±0.5% drift over −40°C to +85°C ambient due to matched thermal coefficient of HZS3C2TA-E and associated op-amp circuitry. |
Use Scenario: Regulating backup voltage for real-time clock (RTC) ICs powered by coin cells in metering and alarm systems. IC Role / Device Role / Timing Role: Low-leakage voltage regulator maintaining 3.3 V supply during main power loss. Use Value: Draws only ≤5 µA standby current, extending CR2032 battery life beyond 5 years while holding RTC accuracy within ±2 ppm. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C3V3 (ON Semiconductor) | Same 3.3 V nominal zener, but 500 mW Pd, 90 Ω rd, DO-35 package (larger than MHD). | Higher power handling suits higher-current clamping; DO-35 requires manual placement or different feeder setup. | Select when >400 mW dissipation margin is required or legacy DO-35 footprint is fixed. |
| MMSZ4685 (Diodes Inc.) | SOD-123 package, 3.3 V, 300 mW Pd, 120 Ω rd, 1 µA IR at 1 V - lower leakage but reduced power capability. | Smaller footprint ideal for space-constrained portable designs; lower Pd limits sustained current to ~90 mA. | Select for ultra-low-leakage, high-density layouts where thermal budget permits lower power rating. |
Compared with BZX55C3V3 and MMSZ4685, the HZS3C2TA-E offers optimal balance of 400 mW power handling, 100 Ω impedance, and MHD package compatibility with automated insertion - making it preferred for cost-sensitive industrial control boards requiring reliable 3.3 V reference without SMT reflow constraints.
Availability
HZS3C2TA-E is available at Aetrix Electronics and suitable for industrial sensor biasing, USB peripheral protection, and microcontroller reference voltage generation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for HZS3C2TA-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 manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.
The HZS Series was developed by Renesas as a family of general-purpose silicon planar Zener diodes targeting cost-effective, high-reliability voltage stabilization in power management and signal conditioning circuits across consumer and industrial equipment.
FAQ
What is the exact zener voltage range for HZS3C2TA-E at 25°C?
The HZS3C2TA-E has a guaranteed zener voltage range of 3.1 V to 3.5 V when tested at IZ = 5 mA and Ta = 25°C. This corresponds to Grade C3 within the HZS3 family, as confirmed in the Renesas REJ03G0184-0500 datasheet, page 2. The device is not binned beyond this specification, and no tighter tolerance variants exist for this part number.
Is HZS3C2TA-E suitable for surface-mount assembly?
No - the HZS3C2TA-E uses the MHD package (JEITA GRZZ0002ZC-A), which is an axial-lead miniature plastic package designed for through-hole mounting and high-speed automatic insertion at 5 mm pitch. It is not a surface-mount device and lacks solder pads or gull-wing leads required for reflow or wave soldering processes.
What is the maximum reverse leakage current for HZS3C2TA-E?
The maximum reverse leakage current for HZS3C2TA-E is 5 µA, measured at VR = 0.5 V and Ta = 25°C. This value is specified in the "Electrical Characteristics" table on page 2 of the Renesas REJ03G0184-0500 datasheet and applies across all grades of the HZS3 series, including HZS3C2TA-E.
Does HZS3C2TA-E have a specified temperature coefficient?
Yes - while the datasheet does not list a numeric γZ value specifically for HZS3C2TA-E, Figure 2 on page 5 shows that Zener diodes in the 3 V range (including HZS3) exhibit a temperature coefficient of approximately −0.04 %/°C (or −1.3 mV/°C). This negative coefficient is inherent to low-voltage planar Zeners and must be accounted for in precision reference designs operating across wide temperature ranges.
Can HZS3C2TA-E replace a 3.3 V TL431-based shunt regulator?
No - the HZS3C2TA-E is a two-terminal passive Zener diode, whereas the TL431 is a three-terminal programmable shunt regulator with active feedback, adjustable threshold, and much lower dynamic impedance (~0.2 Ω). HZS3C2TA-E cannot replicate TL431 functionality; it may serve only as a simple fixed-voltage clamp or reference where ±0.2 V tolerance and 100 Ω impedance are acceptable, such as in non-critical biasing or overvoltage limiting.
HZS3C2TA-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:
- -
HZS3C2TA-E FAQ
1.How can I place an order for HZS3C2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS3C2TA-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 HZS3C2TA-E reliable?
The price and inventory of HZS3C2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS3C2TA-E is usually 5 days.
3.What payment methods are accepted for HZS3C2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS3C2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS3C2TA-E?
HZS3C2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS3C2TA-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 HZS3C2TA-E?
For technical support, including HZS3C2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS3C2TA-E requirements.
6.How does Aetrix verify that HZS3C2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS3C2TA-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 HZS3C2TA-E meets industry standards.
7.What is the process for return or replacement of HZS3C2TA-E?
All HZS3C2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS3C2TA-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 HZS3C2TA-E part is unused and in its original packaging.
Return procedure for HZS3C2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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