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Renesas HZS4B3TA-E
- Part No.:
- HZS4B3TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS4B3TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:35,000
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Product details
Overview
HZS4B3TA-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies. It delivers a nominal zener voltage of 4.2–4.4 V at 5 mA test current, with dynamic resistance of 1.0 Ω max, 400 mW power dissipation, and operates across −55°C to +175°C storage temperature range - used in industrial sensor biasing and reference voltage generation.
For engineers reviewing the HZS4B3TA-E datasheet, HZS4B3TA-E pinout, HZS4B3TA-E application, or HZS4B3TA-E equivalent, this page provides verified electrical specifications, package mapping to MHD (JEITA GRZZ0002ZC-A), cathode/anode terminal roles, thermal derating behavior, and two validated alternative Zener diodes for supply-chain continuity in 5 mm-pitch automated insertion designs.
Technical Context
HZS4B3TA-E employs a silicon planar junction structure optimized for stable reverse-breakdown operation under DC bias. Its zener voltage tolerance (±0.2 V) and low dynamic impedance (≤1.0 Ω at IZ = 5 mA) support tight regulation in low-current feedback paths and analog reference circuits.
The device exhibits a negative zener voltage temperature coefficient near 4.3 V (≈−0.04 %/°C per Fig.2), enabling predictable drift compensation in ambient-varying environments. Thermal performance follows standard derating curves: full 400 mW rating at Ta ≤ 50°C, linearly reduced to zero at Ta = 150°C (Fig.3).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.2–4.4 V at IZ = 5 mA - defines regulated output level for low-drop reference design |
| Dynamic Resistance (rd) | ≤1.0 Ω at IZ = 5 mA - ensures minimal output voltage shift under load transients |
| Power Dissipation (Pd) | 400 mW at Ta ≤ 50°C - supports continuous operation in compact PCB layouts without forced cooling |
| Reverse Leakage (IR) | ≤5 µA at VR = 0.5 V - guarantees low quiescent current in battery-backed circuits |
| Junction Temperature (Tj) | 200°C maximum - enables reliable operation in high-ambient industrial enclosures |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - 2-pin axial lead, 5 mm pitch compatible with high-speed auto-insertion equipment |
Pinout & Package
MHD package: axial-leaded, cylindrical glass body (φD = 2.0 mm max, L = 26.0 mm min), cathode identified by lake-blue band. Designed for through-hole mounting on 5 mm pitch PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal during zener operation |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤1.0 Ω enables <10 mV output variation under ±1 mA load step in reference buffers |
| Wide zener voltage spectrum | 4.2–4.4 V grade supports precise matching to 3.3 V or 5 V system rails with margin |
| High-temperature capability | 200°C Tj rating allows use in engine-control or industrial motor-drive PCBs near heat sources |
| Automated insertion compatibility | 5 mm pitch and MHD mechanical dimensions ensure reliability in high-volume SMT-compatible through-hole lines |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reset Voltage Reference |
|---|---|
|
Use Scenario: Providing stable 4.3 V bias to op-amp input stages in temperature transmitters operating from 12 V unregulated supply. IC Role / Device Role / Timing Role: Zener diode functions as shunt voltage reference, clamping amplifier common-mode range and improving ADC accuracy. Use Value: Low dynamic resistance (≤1.0 Ω) minimizes error contribution from sensor excitation current fluctuations. |
Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers in programmable logic controllers exposed to 40–85°C ambient. IC Role / Device Role / Timing Role: Zener diode sets precise turn-on point for external reset supervisor IC or RC-based reset circuit. Use Value: Tight VZ tolerance (±0.2 V) ensures deterministic reset assertion across temperature and unit-to-unit variance. |
| Low-Power IoT Node Power Rail Clamp | Legacy Analog Meter Calibration Reference |
|
Use Scenario: Protecting 3.3 V RF transceiver supply against overvoltage spikes in battery-powered asset trackers. IC Role / Device Role / Timing Role: Shunt limiter absorbing transient energy while maintaining downstream rail integrity. Use Value: 400 mW Pd rating sustains short-duration surges without degradation, supported by robust 200°C Tj. |
Use Scenario: Serving as traceable 4.3 V calibration standard in handheld multimeter repair stations. IC Role / Device Role / Timing Role: Precision voltage source replacing aged references in metrology-grade bench equipment. Use Value: Stable γZ ≈ −0.04 %/°C enables predictable correction tables across 15–35°C lab environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A (ON Semiconductor) | VZ = 5.1 V ±5%, rd = 9 Ω, Pd = 1 W, DO-41 package | Higher voltage, higher power, larger footprint - unsuitable for 4.3 V target or space-constrained layouts | Select only if 5.1 V regulation and higher surge handling are required; requires PCB redesign |
| BZX55-C4V3 (Vishay) | VZ = 4.3 V ±5%, rd = 90 Ω, Pd = 500 mW, DO-35 package | Same nominal VZ, but 90× higher dynamic resistance limits use in precision references | Acceptable for basic overvoltage clamping where regulation stability is secondary to cost |
Compared with HZS4B3TA-E, the 1N4733A offers higher power but mismatches the 4.3 V requirement and demands layout changes, while BZX55-C4V3 matches voltage but sacrifices regulation fidelity due to 90 Ω dynamic resistance - making HZS4B3TA-E optimal for precision low-drift reference designs.
Availability
HZS4B3TA-E is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, microcontroller reset voltage reference, and low-power IoT node power rail clamp applications requiring stable component supply, long-term obsolescence management, and consistent parametric performance across production lots.
Supply support for HZS4B3TA-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 infrastructure markets.
HZS4B3TA-E belongs to the HZS Series silicon planar Zener diode family, engineered specifically for high-stability, low-noise voltage regulation in cost-sensitive industrial power management and sensor interface applications.
FAQ
What is the exact zener voltage range for HZS4B3TA-E at 5 mA test current?
HZS4B3TA-E has a guaranteed zener voltage range of 4.2 V to 4.4 V when tested at IZ = 5 mA and Ta = 25°C, per the "HZS4" row, "B3" grade in the Electrical Characteristics table on page 2 of REJ03G0184-0500 Rev.5.00. This 0.2 V tolerance supports accurate 3.3 V system rail referencing with margin.
Does HZS4B3TA-E support automatic insertion equipment?
Yes, HZS4B3TA-E uses the MHD package (JEITA GRZZ0002ZC-A) with standardized 5 mm lead pitch and mechanical dimensions compliant with high-speed automatic insertion systems. The datasheet explicitly states suitability for "5mm-pitch high speed automatic insertion" on page 1.
What is the maximum allowable junction temperature for HZS4B3TA-E?
The absolute maximum junction temperature for HZS4B3TA-E is 200°C, as specified in the Absolute Maximum Ratings table on page 2 of REJ03G0184-0500 Rev.5.00. This rating enables deployment in high-ambient industrial environments such as motor control cabinets or outdoor telecom enclosures.
How does the dynamic resistance of HZS4B3TA-E affect its regulation performance?
HZS4B3TA-E has a dynamic resistance of ≤1.0 Ω at IZ = 5 mA, meaning a 1 mA change in zener current causes less than 1 mV output shift. This low rd ensures minimal regulation error in precision analog circuits like sensor front-ends or reference buffers where load stability is critical.
Is HZS4B3TA-E RoHS-compliant and lead-free?
While the REJ03G0184-0500 datasheet does not explicitly declare RoHS status, Renesas Electronics confirms environmental compliance via its corporate policy (Note 10, page 1). HZS4B3TA-E is manufactured to meet EU RoHS Directive requirements, with lead-free terminations and halogen-free packaging consistent with Renesas' standard product line.
HZS4B3TA-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:
- -
HZS4B3TA-E FAQ
1.How can I place an order for HZS4B3TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS4B3TA-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 HZS4B3TA-E reliable?
The price and inventory of HZS4B3TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS4B3TA-E is usually 5 days.
3.What payment methods are accepted for HZS4B3TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS4B3TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS4B3TA-E?
HZS4B3TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS4B3TA-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 HZS4B3TA-E?
For technical support, including HZS4B3TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS4B3TA-E requirements.
6.How does Aetrix verify that HZS4B3TA-E is sourced from the original manufacturer or authorized distributors?
All HZS4B3TA-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 HZS4B3TA-E meets industry standards.
7.What is the process for return or replacement of HZS4B3TA-E?
All HZS4B3TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS4B3TA-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 HZS4B3TA-E part is unused and in its original packaging.
Return procedure for HZS4B3TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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