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Renesas HZS4C2TD-E
- Part No.:
- HZS4C2TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS4C2TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
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Product details
Overview
HZS4C2TD-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies, featuring a nominal zener voltage of 4.2 V to 4.4 V (Grade C2), 400 mW power dissipation, ≤100 Ω dynamic resistance at 5 mA, and operation up to 200°C junction temperature.
For engineers reviewing the HZS4C2TD-E datasheet, HZS4C2TD-E pinout, HZS4C2TD-E application, or HZS4C2TD-E equivalent, this device serves as a surface-mount-compatible, high-stability reference element in voltage-clamping, overvoltage protection, and biasing circuits where tight tolerance and low leakage are required.
Technical Context
The HZS4C2TD-E operates as a two-terminal, passive voltage-reference device relying on controlled reverse-biased avalanche breakdown. Its zener voltage is specified at IZ = 5 mA with ±0.2 V tolerance (C2 grade), and it exhibits low temperature coefficient (≈−0.04 %/°C) near 4.3 V, enabling stable regulation across industrial ambient ranges.
It uses a silicon planar construction with epoxy-molded MHD package (JEITA code GRZZ0002ZC-A), cathode-band marked, and supports automated insertion at 5 mm pitch. The device is rated for 25 µA maximum reverse leakage at VR = 0.5 V and meets Renesas "Standard" quality grade for office, industrial, and consumer applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.2 V to 4.4 V at IZ = 5 mA - defines precise clamping threshold for 3.3 V–5 V rail stabilization |
| Power Dissipation (Pd) | 400 mW - supports continuous regulation in compact PCB layouts without forced cooling |
| Dynamic Resistance (rd) | ≤100 Ω at IZ = 5 mA - ensures minimal output voltage shift under load transients |
| Reverse Leakage (IR) | ≤25 µA at VR = 0.5 V - enables low-quiescent-current bias networks and sensing circuits |
| Junction Temperature (Tj) | −55°C to +200°C - allows operation in high-temperature environments such as motor control enclosures |
| Package | MHD (JEITA GRZZ0002ZC-A) - 2.0 mm diameter, axial-leaded, 5 mm pitch compatible with high-speed auto-insertion |
| Zener Grade | C2 - ±0.2 V tolerance band centered at 4.3 V, optimized for mid-range supply referencing |
Pinout & Package
MHD package: cylindrical epoxy-molded body, 2.0 mm diameter × 26.0 mm length, cathode band marked, lead material is tin-plated copper, mass ≈ 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference node | Connected to regulated positive rail; reverse-bias voltage applied here to initiate zener conduction |
| 2 (Anode) | Reference ground return | Tied to circuit common or current-limiting resistor; completes bias path for stable VZ establishment |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤100 Ω at 5 mA - maintains regulation accuracy under varying load currents in feedback networks |
| Wide zener voltage range | 1.6 V to 38 V across HZS family - enables single-supplier sourcing for multi-rail systems |
| High thermal stability | Temperature coefficient ≈ −0.04 %/°C near 4.3 V - minimizes drift in ambient-temperature-varying applications |
| Automated assembly compatibility | 5 mm pitch, MHD package - supports high-throughput placement in industrial PCB manufacturing |
| Low leakage performance | ≤25 µA at 0.5 V reverse bias - preserves battery life in always-on monitoring circuits |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity sensor modules operating from unregulated 5 V rails. IC Role / Device Role / Timing Role: Zener reference diode providing fixed 4.3 V bias to op-amp input stage and ADC reference divider network. Use Value: Enables ±0.5% full-scale accuracy over −25°C to +70°C ambient by minimizing VZ drift and loading error via low rd. |
Use Scenario: Overvoltage clamp on USB-C VBUS line during hot-plug events to protect downstream PMICs and level-shifters. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting transient spikes to ≤4.4 V before TVS activation. Use Value: Adds sub-100 ns clamping latency with 400 mW surge handling, complementing primary TVS without adding capacitance. |
| Programmable Logic Controller I/O Protection | IoT Node Battery Monitor Reference |
|
Use Scenario: Input protection for 24 V digital input channels exposed to field-wiring transients in factory automation PLCs. IC Role / Device Role / Timing Role: Series-connected zener in voltage-divider-based optocoupler interface, setting logic threshold at 4.3 V. Use Value: Ensures consistent switching point across batches and temperatures, reducing false-trigger rate in noisy industrial EMI environments. |
Use Scenario: Precision low-power voltage reference for lithium-ion cell voltage measurement in BLE-enabled asset trackers. IC Role / Device Role / Timing Role: Stable 4.3 V reference for resistive divider feeding ultra-low-power SAR ADC (e.g., MSP430FR2355). Use Value: Delivers <1.5 mV total error (initial + temp + aging) over 10-year deployment, supporting accurate state-of-charge estimation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C4V3 (ON Semiconductor) | Same 4.3 V nominal, ±5% tolerance (vs. HZS4C2TD-E's ±0.2 V), 500 mW Pd, DO-35 package | Loose-tolerance general-purpose use; not suitable for precision biasing requiring <1% VZ stability | Select when cost sensitivity outweighs voltage accuracy and thermal drift requirements |
| MMSZ4V3 (Diodes Inc.) | SOD-123 surface-mount package, same 4.3 V nominal, ±5%, 350 mW Pd, higher rd (150 Ω) | Board space-constrained designs; lacks axial-leaded mechanical robustness for high-vibration environments | Prefer for dense consumer PCBs where reflow compatibility and footprint size dominate |
Compared with BZX55C4V3 and MMSZ4V3, the HZS4C2TD-E delivers tighter voltage tolerance, lower dynamic resistance, and superior thermal stability-making it optimal for industrial-grade analog signal chains where long-term calibration integrity matters.
Availability
HZS4C2TD-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery clamping, programmable logic controller I/O protection, and IoT node battery monitoring requiring stable component supply and traceable sourcing.
Supply support for HZS4C2TD-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 applications.
The HZS Series belongs to Renesas' discrete voltage-reference product line, engineered specifically for high-reliability, low-drift stabilization in industrial power supplies and analog interfaces where consistency across temperature and time is critical.
FAQ
What is the exact zener voltage range for HZS4C2TD-E?
The HZS4C2TD-E has a guaranteed zener voltage range of 4.2 V to 4.4 V at test current IZ = 5 mA, corresponding to its C2 grade designation per Renesas REJ03G0184-0500 Rev.5.00. This ±0.1 V tolerance around 4.3 V enables precise voltage referencing in analog circuits where tighter regulation than standard ±5% zeners is required. The HZS4C2TD-E specification is confirmed in the official datasheet's Electrical Characteristics table on page 2.
Does HZS4C2TD-E support automatic insertion in manufacturing?
Yes, the HZS4C2TD-E uses the MHD package (JEITA GRZZ0002ZC-A) with 5 mm lead pitch and standardized axial geometry, explicitly qualified for high-speed automatic insertion per the "Suitable for 5mm-pitch high speed automatic insertion" feature statement in the Renesas datasheet. Its 2.0 mm body diameter and 26.0 mm length comply with industry-standard feeder tape and pick-and-place tooling for through-hole assembly lines.
What is the maximum power dissipation and derating behavior of HZS4C2TD-E?
The HZS4C2TD-E has a maximum power dissipation of 400 mW at Ta = 25°C, with linear derating above 25°C at 3.2 mW/°C as shown in Figure 3 of the datasheet. At 75°C ambient, usable power drops to approximately 240 mW. This derating curve ensures safe operation in enclosed industrial enclosures without heatsinking, provided board layout provides adequate copper area for heat spreading.
Is HZS4C2TD-E RoHS compliant and what is its quality grade?
Yes, HZS4C2TD-E conforms to EU RoHS Directive requirements as confirmed by Renesas' environmental compliance documentation. It carries the "Standard" quality grade per Renesas' classification system (Section 7 of REJ03G0184-0500), meaning it is approved for use in computers, office equipment, communications gear, industrial robots, and home appliances-but not for automotive, medical life-support, or aerospace applications without explicit written consent.
How does the temperature coefficient of HZS4C2TD-E affect long-term stability?
The HZS4C2TD-E exhibits a zener voltage temperature coefficient of approximately −0.04 %/°C near its 4.3 V operating point, as shown in Figure 2 of the datasheet. This translates to ~−1.7 mV/°C drift, enabling predictable compensation in bias networks and ensuring <±10 mV total variation across −25°C to +85°C ambient-critical for maintaining ADC reference accuracy in unheated industrial deployments.
HZS4C2TD-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:
- -
HZS4C2TD-E FAQ
1.How can I place an order for HZS4C2TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS4C2TD-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 HZS4C2TD-E reliable?
The price and inventory of HZS4C2TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS4C2TD-E is usually 5 days.
3.What payment methods are accepted for HZS4C2TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS4C2TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS4C2TD-E?
HZS4C2TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS4C2TD-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 HZS4C2TD-E?
For technical support, including HZS4C2TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS4C2TD-E requirements.
6.How does Aetrix verify that HZS4C2TD-E is sourced from the original manufacturer or authorized distributors?
All HZS4C2TD-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 HZS4C2TD-E meets industry standards.
7.What is the process for return or replacement of HZS4C2TD-E?
All HZS4C2TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS4C2TD-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 HZS4C2TD-E part is unused and in its original packaging.
Return procedure for HZS4C2TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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