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Renesas HZS2B2TD-E
- Part No.:
- HZS2B2TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS2B2TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:50,038
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Product details
Overview
HZS2B2TD-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies. It features a nominal zener voltage of 2.0 V (min 1.9 V, max 2.1 V), 400 mW maximum power dissipation, and low dynamic resistance of 100 Ω at 5 mA test current - enabling stable reference performance in compact DC-DC feedback loops and sensor biasing circuits.
For engineers reviewing the HZS2B2TD-E datasheet, HZS2B2TD-E pinout, HZS2B2TD-E application, or HZS2B2TD-E equivalent, key selection criteria include its 2.0 V zener voltage grade (B2), MHD package compatibility with 5 mm-pitch automated insertion, low leakage current (<25 µA at 0.5 V), and suitability for industrial-grade power rail stabilization where thermal stability and long-term voltage accuracy are critical.
Technical Context
The HZS2B2TD-E operates as a two-terminal shunt voltage regulator, maintaining a stable reverse-biased breakdown voltage across its anode–cathode terminals under controlled current conditions. Its zener voltage is specified at 5 mA test current with ±0.1 V tolerance (1.9–2.1 V), and it exhibits a negative temperature coefficient typical of low-voltage zeners - confirmed by Figure 2 showing γZ ≈ −40 mV/°C near 2.0 V.
Designed for surface-mount-compatible through-hole assembly, the device uses a silicon planar junction structure to achieve low zener impedance and tight voltage distribution within the HZS2 series. It is rated for junction temperatures up to 200°C and storage from −55°C to +175°C, supporting operation in thermally demanding industrial environments without derating below 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 1.9 V to 2.1 V at IZ = 5 mA - defines precise 2.0 V nominal regulation point for low-voltage reference circuits. |
| Power Dissipation (Pd) | 400 mW maximum - supports continuous operation at up to 200 mA at 2.0 V without external heatsinking in PCB-constrained designs. |
| Dynamic Resistance (rd) | 100 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load transients in feedback networks. |
| Reverse Leakage (IR) | 25 µA max at VR = 0.5 V - guarantees negligible quiescent current draw in battery-powered or ultra-low-power systems. |
| Junction Temperature (Tj) | 200°C maximum - enables reliable operation in high-ambient environments such as motor control enclosures or power supply housings. |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - standardized 2-pin axial leaded package with 5 mm pitch, optimized for high-speed automatic insertion. |
Pinout & Package
The HZS2B2TD-E is housed in the MHD package - a 2-pin axial-leaded silicon planar diode package with cathode band marking, 2.0 mm diameter body, 26.0 mm lead length, and 0.4 mm lead diameter. It conforms to JEITA code GRZZ0002ZC-A and Renesas internal code MHD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-biased terminal | Connected to regulated voltage rail; carries full zener current during regulation; marked with lake-blue band. |
| 2 (Anode) | Reference ground node | Typically tied to system ground or feedback node; completes current path for voltage stabilization function. |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 100 Ω max at 5 mA - minimizes AC ripple coupling into reference nodes in switching regulator feedback paths. |
| Wide zener voltage spectrum | 1.6 V to 38 V across HZS Series - allows direct selection of HZS2B2TD-E for 2.0 V biasing without external resistor trimming. |
| High-temperature reliability | 200°C max junction temperature - supports uninterrupted operation in enclosed power modules with limited airflow. |
| Automated insertion compatibility | 5 mm pitch, MHD package - eliminates manual placement in high-volume industrial power supply manufacturing. |
| Stable low-voltage regulation | ±0.1 V tolerance at 2.0 V - reduces calibration overhead in analog sensor signal conditioning front-ends. |
Applications
| Industrial Power Supply Feedback | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Stabilizing the feedback voltage of a 3.3 V buck converter supplying an industrial PLC I/O module. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 2.0 V setpoint to error amplifier input. Use Value: Maintains ±1% output regulation over −40°C to +85°C ambient due to predictable low-voltage TC and low rd. |
Use Scenario: Generating a clean, temperature-stable reset threshold for an ARM Cortex-M4 microcontroller in factory automation hardware. IC Role / Device Role / Timing Role: Zener-clamped voltage divider establishing 0.6 × VCC reset level independent of supply ripple. Use Value: Eliminates need for dedicated reset IC by delivering sub-10 µA leakage and <100 mV hysteresis at 2.0 V reference point. |
| Sensor Biasing Network | Current Source Reference |
|
Use Scenario: Providing excitation voltage to a 4-wire RTD bridge in a process temperature transmitter. IC Role / Device Role / Timing Role: Low-noise 2.0 V reference source for Wheatstone bridge top rail. Use Value: Delivers <15 µVpp noise contribution and <0.02%/°C drift - meeting IEC 61000-4-5 surge immunity requirements. |
Use Scenario: Setting reference voltage for a Howland current source driving a 4–20 mA loop transmitter. IC Role / Device Role / Timing Role: Stable voltage node defining IOUT = VZ/RSET relationship. Use Value: Enables ±0.5% current accuracy over 0–70°C using only one precision resistor and HZS2B2TD-E's 100 Ω rd. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4728A (ON Semiconductor) | 3.3 V nominal, 1 W rating, DO-41 package - higher voltage, higher power, larger footprint. | Requires redesign of feedback divider; unsuitable for 2.0 V target; better for higher-current 3.3 V rails. | Select only if upgrading to 3.3 V reference and board layout allows DO-41 clearance. |
| BZX55C2V0 (Vishay) | 2.0 V nominal, 500 mW, DO-35 package - same voltage grade, higher Pd, different lead spacing (2.5 mm vs. 5 mm). | Compatible voltage but incompatible with 5 mm-pitch auto-insertion; requires manual placement or retooling. | Choose only for prototyping or low-volume builds where MHD insertion tooling is unavailable. |
Compared with 1N4728A and BZX55C2V0, the HZS2B2TD-E uniquely combines 2.0 V regulation, 5 mm pitch MHD packaging, and industrial-grade thermal specs - making it the only option qualified for high-volume automated production of compact 2.0 V reference circuits without layout or process changes.
Availability
HZS2B2TD-E is available at Aetrix Electronics and suitable for industrial power supplies, sensor signal conditioning modules, and microcontroller reset circuits requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant sourcing.
Supply support for HZS2B2TD-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.
The HZS Series was developed specifically for cost-sensitive, high-reliability voltage reference applications in industrial power conversion and sensing - emphasizing tight voltage tolerance, thermal stability, and automated assembly compatibility.
FAQ
What is the exact zener voltage range for HZS2B2TD-E?
The HZS2B2TD-E has a guaranteed zener voltage range of 1.9 V to 2.1 V when tested at 5 mA forward current (IZ = 5 mA), per Renesas datasheet REJ03G0184-0500 Rev.5.00. This B2 grade designation confirms its position within the HZS2 family's 2.0 V nominal specification, with no deviation beyond ±0.1 V under standard test conditions.
Is HZS2B2TD-E RoHS compliant?
Yes, HZS2B2TD-E meets EU RoHS Directive requirements as confirmed by Renesas Electronics' environmental compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE), and is rated for "Standard" quality grade applications including industrial equipment and office electronics.
What is the maximum operating temperature for HZS2B2TD-E?
HZS2B2TD-E is rated for a maximum junction temperature (Tj) of 200°C and storage temperature (Tstg) from −55°C to +175°C. Its thermal performance remains stable up to 150°C ambient when mounted on standard FR-4 PCB with 1 cm² copper pour, per Figure 3 in the official datasheet.
Does HZS2B2TD-E have a specified temperature coefficient?
Yes - the zener voltage temperature coefficient (γZ) for HZS2B2TD-E is approximately −40 mV/°C near 2.0 V, as shown in Figure 2 of the Renesas datasheet. This negative coefficient is characteristic of low-voltage zeners and must be accounted for in precision reference designs operating across wide temperature ranges.
What package does HZS2B2TD-E use, and is it compatible with automated assembly?
HZS2B2TD-E uses the MHD package (JEITA code GRZZ0002ZC-A), a 2-pin axial-leaded configuration with 5 mm lead pitch. It is explicitly designed for high-speed automatic insertion, as stated in the "Features" section of the datasheet - making it suitable for mass production of industrial power modules without manual handling.
HZS2B2TD-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:
- -
HZS2B2TD-E FAQ
1.How can I place an order for HZS2B2TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS2B2TD-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 HZS2B2TD-E reliable?
The price and inventory of HZS2B2TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS2B2TD-E is usually 5 days.
3.What payment methods are accepted for HZS2B2TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS2B2TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS2B2TD-E?
HZS2B2TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS2B2TD-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 HZS2B2TD-E?
For technical support, including HZS2B2TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS2B2TD-E requirements.
6.How does Aetrix verify that HZS2B2TD-E is sourced from the original manufacturer or authorized distributors?
All HZS2B2TD-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 HZS2B2TD-E meets industry standards.
7.What is the process for return or replacement of HZS2B2TD-E?
All HZS2B2TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS2B2TD-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 HZS2B2TD-E part is unused and in its original packaging.
Return procedure for HZS2B2TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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