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Renesas HZS2B1TA-E
- Part No.:
- HZS2B1TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS2B1TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZS2B1TA-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 2.0 V (min 1.9 V, max 2.1 V), 400 mW power dissipation, and low dynamic resistance of 100 Ω at 5 mA test current - deployed in industrial control logic rails and sensor biasing circuits.
For engineers reviewing the HZS2B1TA-E datasheet, HZS2B1TA-E pinout, HZS2B1TA-E application, or HZS2B1TA-E equivalent, key selection criteria include zener voltage tolerance (±0.1 V), junction temperature rating (200°C), cathode-anode polarity confirmation, and compatibility with 5 mm-pitch automated insertion equipment.
Technical Context
This device operates as a two-terminal voltage reference using avalanche and Zener breakdown mechanisms optimized for DC stabilization. Its 2.0 V nominal zener voltage falls within the low-voltage range where temperature coefficient is negative and relatively stable (≈ −3.5 mV/°C).
The HZS2B1TA-E employs a silicon planar construction with glass-passivated junction, housed in an axial MHD package. It is rated for continuous reverse operation up to 400 mW at 25°C ambient, derating linearly above 25°C per the published power dissipation vs. ambient temperature curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 1.9 V to 2.1 V at IZ = 5 mA - defines tight regulation window for 2.0 V reference rails |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports compact PCB layout without forced cooling |
| Dynamic Resistance (rd) | 100 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Junction Temperature (Tj) | 200°C maximum - enables reliable operation in high-temperature industrial enclosures |
| Reverse Current (IR) | 25 µA max at VR = 0.5 V - guarantees low leakage in standby-biased circuits |
| Package Type | MHD axial leaded package (JEITA GRZZ0002ZC-A) - compatible with standard 5 mm pitch auto-insertion equipment |
Pinout & Package
The HZS2B1TA-E is housed in a glass-passivated silicon planar diode package designated MHD (JEITA code GRZZ0002ZC-A), featuring axial leads and a lake-blue cathode band marking. Total mass is 0.084 g; body diameter φD = 2.0 mm, length L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (unmarked side) | Anode | Typically tied to ground or lower potential; forms reference return path |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 100 Ω max at 5 mA - maintains regulation accuracy under varying load currents |
| Wide zener voltage spectrum | 1.6 V to 38 V across HZS series - allows single-family sourcing for diverse rail voltages |
| High junction temperature rating | 200°C - supports deployment in thermally constrained environments like motor drive PCBs |
| Automated insertion compatibility | 5 mm pitch design - enables high-throughput assembly without manual handling or rework |
| Low leakage current | 25 µA max at 0.5 V reverse bias - preserves battery life in always-on sensor nodes |
Applications
| Industrial Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 2.0 V reference for analog front-end amplifiers in temperature and pressure sensors. IC Role / Device Role / Timing Role: Voltage reference element establishing precise bias point for op-amp input stages. Use Value: Enables <±1% measurement accuracy over −40°C to +85°C ambient due to predictable low-voltage TC and low rd. |
Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Threshold detector in RC-based reset generator circuit. Use Value: Delivers fast, repeatable reset assertion at 2.0 V with minimal hysteresis, preventing spurious resets. |
| Low-Power Analog Rail Stabilization | LED Current Regulation Reference |
Use Scenario: Stabilizing 2.0 V supply for precision DACs and ADC reference buffers in portable instrumentation. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant voltage despite source ripple and load variation. Use Value: Achieves <10 mV output deviation under 10–100 µA load swings, critical for 12-bit+ data converters. |
Use Scenario: Setting reference voltage for constant-current LED driver IC feedback loop. IC Role / Device Role / Timing Role: Precision voltage node defining target current via sense resistor scaling. Use Value: Ensures ±2% LED brightness consistency across unit-to-unit and temperature variations. |
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 |
|---|---|---|---|
| BZX55C2V0 (ON Semiconductor) | Same 2.0 V nominal zener, but 500 mW Pd, higher rd (150 Ω), DO-35 package | Higher power margin but larger footprint; less suitable for dense 5 mm pitch layouts | Select when thermal headroom >100 mW is required and board space permits DO-35 |
| MMBZ5221BS (Diodes Inc.) | SOT-23 surface-mount, 2.0 V, 225 mW, rd = 120 Ω - not axial, not drop-in | Enables miniaturized PCBs but requires re-layout; unsuitable for through-hole automation | Choose only for space-constrained designs where reflow assembly replaces wave soldering |
Compared with BZX55C2V0 and MMBZ5221BS, the HZS2B1TA-E offers optimal balance of tight voltage tolerance (±0.1 V), axial MHD package compatibility with legacy insertion lines, and 400 mW dissipation - making it preferred for cost-sensitive industrial control boards requiring proven manufacturability.
Availability
HZS2B1TA-E is available at Aetrix Electronics and suitable for industrial sensor biasing, microcontroller reset circuits, low-power analog rail stabilization, and LED current regulation reference applications requiring stable component supply and long-term obsolescence management.
Supply support for HZS2B1TA-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 formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The HZS Series belongs to Renesas' discrete silicon diode product line, engineered specifically for high-reliability voltage stabilization in industrial-grade power management circuits where precision, thermal robustness, and automated assembly compatibility are essential.
FAQ
What is the exact zener voltage range for HZS2B1TA-E at 5 mA test current?
The HZS2B1TA-E has a guaranteed zener voltage range of 1.9 V to 2.1 V when tested at IZ = 5 mA and Ta = 25°C. This ±0.1 V tolerance reflects Grade B1 specification per the HZS Series datasheet (REJ03G0184-0500 Rev.5.00), ensuring consistent performance in 2.0 V reference designs without binning.
Does HZS2B1TA-E support automatic insertion equipment?
Yes, the HZS2B1TA-E uses the MHD axial package with standardized 5 mm lead pitch, explicitly qualified for high-speed automatic insertion per the datasheet. Its mechanical dimensions (L = 26.0 mm, φD = 2.0 mm) and lake-blue cathode band enable reliable orientation detection and placement in legacy and modern pick-and-place systems.
What is the maximum junction temperature rating for HZS2B1TA-E?
The HZS2B1TA-E is rated for a maximum junction temperature (Tj) of 200°C, as specified in the Absolute Maximum Ratings table. This allows sustained operation in high-ambient environments such as enclosed motor drives or industrial PLC backplanes, provided PCB copper area and airflow meet thermal derating guidelines.
How does the dynamic resistance of HZS2B1TA-E affect regulation stability?
The HZS2B1TA-E exhibits dynamic resistance (rd) ≤100 Ω at IZ = 5 mA, meaning a 1 mA change in zener current causes ≤100 mV output shift. This low rd directly improves load regulation and ripple rejection in shunt-regulated supplies - critical for noise-sensitive analog signal chains powered by the HZS2B1TA-E.
Is HZS2B1TA-E RoHS compliant and lead-free?
Yes, HZS2B1TA-E complies with EU RoHS Directive requirements. Renesas confirms environmental compliance for the HZS Series in official documentation, and the device carries no lead exemptions - its terminations are matte tin-plated copper leads, fully compatible with lead-free reflow and wave soldering processes.
HZS2B1TA-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:
- -
HZS2B1TA-E FAQ
1.How can I place an order for HZS2B1TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS2B1TA-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 HZS2B1TA-E reliable?
The price and inventory of HZS2B1TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS2B1TA-E is usually 5 days.
3.What payment methods are accepted for HZS2B1TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS2B1TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS2B1TA-E?
HZS2B1TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS2B1TA-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 HZS2B1TA-E?
For technical support, including HZS2B1TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS2B1TA-E requirements.
6.How does Aetrix verify that HZS2B1TA-E is sourced from the original manufacturer or authorized distributors?
All HZS2B1TA-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 HZS2B1TA-E meets industry standards.
7.What is the process for return or replacement of HZS2B1TA-E?
All HZS2B1TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS2B1TA-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 HZS2B1TA-E part is unused and in its original packaging.
Return procedure for HZS2B1TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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