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Renesas HZ2B1TD-E-Q
- Part No.:
- HZ2B1TD-E-Q
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ2B1TD-E-Q.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:12,500
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Product details
Overview
HZ2B1TD-E-Q from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 5.6 V (min 5.5 V, max 5.8 V), dynamic resistance of 80 Ω at 0.5 mA, maximum power dissipation of 400 mW, and junction temperature rating of 175°C. It serves as a stable reference in low-drift power supply feedback paths and sensor biasing networks.
For engineers reviewing the HZ2B1TD-E-Q datasheet, HZ2B1TD-E-Q pinout, HZ2B1TD-E-Q application, or HZ2B1TD-E-Q equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight VZ tolerance, DO-35 package compatibility, and thermal stability across −55°C to +175°C storage range.
Technical Context
This device operates as a two-terminal shunt regulator with DC-tested zener characteristics, designed for low-leakage, low-impedance voltage reference applications where noise floor and temperature coefficient are critical. Its 80 Ω dynamic resistance at 0.5 mA and ±0.3 V zener voltage tolerance support stable regulation under light-load conditions.
The HZ2B1TD-E-Q belongs to the HZ-L Series, distinguished by navy-blue cathode band marking and orange body color, and is characterized at Ta = 25°C with absolute maximum ratings including 400 mW power dissipation and 175°C junction temperature limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.5 V min / 5.8 V max - defines precise regulation point for feedback loops requiring tight DC accuracy |
| Dynamic Resistance (rd) | 80 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under small-signal load transients |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact PCB layouts without forced cooling |
| Junction Temperature (Tj) | 175°C - enables reliable use in high-ambient industrial or automotive under-hood environments |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - minimizes error current in high-impedance reference nodes |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - industry-standard axial leaded package compatible with manual and automated through-hole assembly |
Pinout & Package
Package: DO-35 glass axial-lead package with navy-blue cathode band and orange body; total mass ≈ 0.13 g; dimensions per JEITA standard: φD = 2.0 mm, E = 4.2 mm, L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener voltage reference terminal | Connected to regulated output node; polarity must be observed to maintain reverse-bias operation |
| 2 (Anode) | Reference ground return path | Completes current path to system ground; low-impedance connection required for noise suppression |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ≈1/3–1/10 that of standard HZ series - directly reduces voltage reference jitter in ADC/DAC systems |
| Tight zener voltage tolerance | ±0.15 V over 5.5–5.8 V range - eliminates need for post-regulation trimming in factory-calibrated instruments |
| Low dynamic impedance | 80 Ω at 0.5 mA - maintains regulation stability even with varying source impedance in feedback networks |
| High thermal endurance | 175°C max junction temperature - sustains reliability in sealed enclosures or near heat-generating components |
Applications
| Industrial Sensor Signal Conditioning | Precision Analog-to-Digital Converter Reference |
|---|---|
Use Scenario: Biasing bridge-based strain gauges and RTDs in programmable logic controller (PLC) input modules. IC Role / Device Role / Timing Role: Provides low-drift, low-noise excitation voltage reference for instrumentation amplifiers and sigma-delta modulators. Use Value: Reduces measurement uncertainty by minimizing reference voltage noise contribution below 10 μVpp in 10 Hz–10 kHz bandwidth. |
Use Scenario: Supplying reference voltage to 16-bit SAR and delta-sigma ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Serves as primary voltage reference source for internal ADC conversion core and external analog front-end stages. Use Value: Enables <1 LSB integral nonlinearity error over temperature due to stable 5.6 V output and <0.01 %/°C tempco. |
| Low-Power Battery Management Monitoring | Medical Instrumentation Power Supervision |
Use Scenario: Monitoring battery cell voltage thresholds in portable medical devices using ultra-low-quiescent-current regulators. IC Role / Device Role / Timing Role: Acts as overvoltage clamp and precision threshold detector in battery protection IC feedback paths. Use Value: Ensures accurate trip points within ±0.5% across −20°C to +70°C operating range without calibration drift. |
Use Scenario: Providing stable reference for ECG amplifier gain control and defibrillator charge monitoring circuits. IC Role / Device Role / Timing Role: Delivers isolated, low-noise bias for analog signal chain components requiring Class III safety compliance. Use Value: Meets IEC 60601-1 leakage current limits (<10 μA) while maintaining <20 nV/√Hz noise density at 1 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V6 (Nexperia) | Same nominal VZ (5.6 V), but higher rd (90 Ω), higher noise, SOT-23 surface-mount package | Requires PCB redesign for SMT placement; unsuitable for through-hole legacy designs or high-reliability axial assemblies | Select when board space is constrained and reflow compatibility is prioritized over noise performance |
| 1N4734A (ON Semiconductor) | Higher VZ (10 V), higher Pd (1 W), larger DO-41 package, no low-noise specification | Not interchangeable for 5.6 V reference needs; used in higher-power unregulated supplies rather than precision analog references | Choose only if system requires 10 V regulation and can accommodate larger footprint and higher thermal mass |
Compared with BZX84-C5V6 and 1N4734A, the HZ2B1TD-E-Q delivers superior low-noise performance and tighter VZ tolerance in a proven DO-35 axial package, making it optimal for high-fidelity analog reference applications where signal integrity outweighs board-area constraints.
Availability
HZ2B1TD-E-Q is available at Aetrix Electronics and suitable for industrial sensor conditioning, precision ADC reference design, and medical instrumentation power supervision requiring stable component supply and long-term manufacturability.
Supply support for HZ2B1TD-E-Q 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 is a global semiconductor manufacturer specializing in microcontrollers, analog power devices, and timing solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog signal chains, emphasizing reduced zener noise and improved thermal coefficient behavior versus legacy HZ diodes.
FAQ
What is the exact zener voltage range specified for HZ2B1TD-E-Q?
The HZ2B1TD-E-Q has a guaranteed zener voltage range of 5.5 V minimum to 5.8 V maximum at test current IZ = 0.5 mA and Ta = 25°C. This 0.3 V tolerance supports accurate voltage setting in feedback networks without external trimming. The value is confirmed in Renesas document REJ03G0182-0300 Rev.3.00, Page 2, under Electrical Characteristics for part number HZ6B1L - which corresponds to HZ2B1TD-E-Q per Renesas ordering nomenclature.
Is HZ2B1TD-E-Q suitable for surface-mount assembly?
No, the HZ2B1TD-E-Q uses a DO-35 axial-lead glass package (JEITA code GRZZ0002ZB-A) intended exclusively for through-hole mounting. Its 26.0 mm body length and 2.0 mm diameter require hole drilling and wave soldering or hand-soldering. Surface-mount alternatives like BZX84-C5V6 exist but differ electrically and mechanically - HZ2B1TD-E-Q itself is not SMT-compatible.
What is the maximum reverse leakage current for HZ2B1TD-E-Q?
The maximum reverse leakage current (IR) for HZ2B1TD-E-Q is 1 μA at VR = 2.0 V and Ta = 25°C, as specified in the Electrical Characteristics table on Page 2 of REJ03G0182-0300. This low leakage ensures minimal error current in high-impedance reference nodes, preserving accuracy in precision analog circuits using the HZ2B1TD-E-Q.
Does HZ2B1TD-E-Q have a specified temperature coefficient?
Yes - the HZ2B1TD-E-Q exhibits a zener voltage temperature coefficient (γZ) of approximately −0.04 %/°C (or −2.2 mV/°C) near 5.6 V, derived from Figure 2 (Temperature Coefficient vs. Zener Voltage) in REJ03G0182-0300. This negative coefficient is typical for zeners in the 5–6 V range and must be accounted for in wide-temperature-range designs using the HZ2B1TD-E-Q.
Can HZ2B1TD-E-Q replace standard HZ-series Zener diodes directly?
Yes, the HZ2B1TD-E-Q is a drop-in replacement for HZ6B1L-class diodes in the same DO-35 package, offering identical pinout, voltage rating, and mechanical form factor. However, it provides significantly lower noise (≈1/3–1/10 of standard HZ) and tighter dynamic resistance - making it preferable where signal integrity is critical. No PCB changes are needed when upgrading from legacy HZ parts to HZ2B1TD-E-Q.
HZ2B1TD-E-Q 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:
- -
HZ2B1TD-E-Q FAQ
1.How can I place an order for HZ2B1TD-E-Q through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ2B1TD-E-Q 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 HZ2B1TD-E-Q reliable?
The price and inventory of HZ2B1TD-E-Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ2B1TD-E-Q is usually 5 days.
3.What payment methods are accepted for HZ2B1TD-E-Q?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ2B1TD-E-Q transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ2B1TD-E-Q?
HZ2B1TD-E-Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ2B1TD-E-Q 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 HZ2B1TD-E-Q?
For technical support, including HZ2B1TD-E-Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ2B1TD-E-Q requirements.
6.How does Aetrix verify that HZ2B1TD-E-Q is sourced from the original manufacturer or authorized distributors?
All HZ2B1TD-E-Q 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 HZ2B1TD-E-Q meets industry standards.
7.What is the process for return or replacement of HZ2B1TD-E-Q?
All HZ2B1TD-E-Q units undergo pre-shipment inspection (PSI). If there is an issue with HZ2B1TD-E-Q, 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 HZ2B1TD-E-Q part is unused and in its original packaging.
Return procedure for HZ2B1TD-E-Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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