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Renesas HZ2B1JTA-E
- Part No.:
- HZ2B1JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ2B1JTA-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:245,000
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Product details
Overview
HZ2B1JTA-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 5.5 V (min 5.5 V, max 5.8 V), 400 mW power dissipation, 80 Ω dynamic resistance at 0.5 mA test current, and DO-35 glass package with orange body and navy blue cathode band. It serves in stabilized power supplies, reference voltage sources, and noise-sensitive instrumentation.
For engineers reviewing the HZ2B1JTA-E datasheet, HZ2B1JTA-E pinout, HZ2B1JTA-E application, or HZ2B1JTA-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, low leakage, and suitability for low-current precision biasing where thermal stability and minimal voltage drift are critical.
Technical Context
The HZ2B1JTA-E operates as a two-terminal shunt regulator with DC-tested zener characteristics, optimized for low-noise operation via reduced junction noise generation. Its 80 Ω dynamic resistance at IZ = 0.5 mA ensures stable regulation under light-load conditions typical in sensor biasing and op-amp reference networks.
Designed for ambient temperatures from −55°C to +175°C, it maintains zener voltage stability across industrial temperature ranges, with a temperature coefficient near zero for mid-range voltages - confirmed by Figure 2 showing γZ ≈ −0.02 %/°C at ~5.6 V - enabling predictable behavior without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.5 V min / 5.8 V max at IZ = 0.5 mA - defines precise regulation threshold for low-power reference designs. |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under small load current changes. |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling. |
| Junction Temperature (Tj) | 175°C maximum - enables reliable use in high-temperature industrial environments including motor control and automotive under-hood modules. |
| Reverse Leakage Current (IR) | 1 μA max at VR = 2.0 V - minimizes parasitic current draw in battery-powered or ultra-low-power systems. |
| Package | DO-35 glass axial package (JEITA GRZZ0002ZB-A) - provides hermetic sealing and proven reliability for long-term analog stability. |
Pinout & Package
DO-35 glass axial package: cylindrical body with orange color coding and navy blue cathode band; leads extend axially from opposite ends of the glass envelope. Cathode identified by colored band; anode is unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; polarity must be observed to maintain reverse-bias conduction mode. |
| 2 (Unbanded End) | Anode | Connected to circuit ground or lower-potential rail; completes current path during zener breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener operation | Noise level ≈1/3–1/10 that of standard HZ series - directly improves SNR in precision ADC references and low-level signal conditioning. |
| Tight zener voltage tolerance | ±0.15 V window (5.5–5.8 V) at 0.5 mA - reduces calibration burden in factory-trimmed instrumentation systems. |
| Low dynamic impedance | 80 Ω max ensures <1 mV output shift per 12.5 μA load change - critical for stable biasing of JFETs and low-input-bias op-amps. |
| High-temperature capability | 175°C max junction temperature supports deployment in engine control units and industrial PLC modules without derating. |
| Hermetic DO-35 packaging | Sealed glass construction prevents moisture ingress and parameter drift over decades - validated for >10-year field life in telecom infrastructure. |
Applications
| Instrumentation Reference | Low-Power Sensor Biasing |
|---|---|
Use Scenario: Providing stable 5.5 V reference for 24-bit delta-sigma ADCs in portable multimeters and calibration standards. IC Role / Device Role / Timing Role: Shunt voltage reference establishing high-accuracy analog ground reference point. Use Value: Low dynamic resistance and ultra-low noise ensure <0.001% INL error contribution and eliminate measurable quantization dither from supply ripple. |
Use Scenario: Biasing bridge-type pressure sensors and RTD front-ends in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Low-leakage zener source delivering stable excitation voltage with sub-μA quiescent draw. Use Value: 1 μA max reverse leakage preserves battery life beyond 10 years in sleep-mode dominant deployments. |
| Industrial Power Monitor | Op-Amp Precision Clamping |
Use Scenario: Regulating auxiliary supply rails in DIN-rail mounted energy meters operating continuously at 70°C ambient. IC Role / Device Role / Timing Role: Primary shunt regulator maintaining ±0.5% output accuracy across full temperature range. Use Value: Near-zero temperature coefficient at 5.6 V minimizes thermal drift-induced measurement offset in revenue-grade metering. |
Use Scenario: Clamping op-amp input common-mode range in medical ECG front-ends to prevent saturation during electrode pop transients. IC Role / Device Role / Timing Role: Fast-response voltage limiter protecting amplifier inputs while adding negligible noise. Use Value: Low-noise design avoids degrading input-referred noise floor below 0.5 μVRMS in 0.05–150 Hz bandwidth. |
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 |
|---|---|---|---|
| 1N5226B (ON Semiconductor) | Zener voltage 3.3 V, 500 mW rating, 17 Ω rd, higher noise than HZ2B1JTA-E | Targeted at general-purpose regulation, not low-noise analog references | Select only when cost sensitivity outweighs noise performance and voltage accuracy requirements. |
| BZX55-C5V6 (Vishay) | Zener voltage 5.6 V ±5%, 500 mW, 40 Ω rd, no published noise specification | Used in consumer power supplies; lacks documented low-noise validation | Acceptable for non-critical biasing but unsuitable for metrology-grade references due to unverified noise behavior. |
Compared with 1N5226B and BZX55-C5V6, the HZ2B1JTA-E delivers verified low-noise operation, tighter voltage tolerance, and industrial-grade temperature stability - making it the preferred choice for applications demanding traceable accuracy and long-term parametric consistency.
Availability
HZ2B1JTA-E is available at Aetrix Electronics and suitable for stabilized power supplies, precision voltage references, and low-noise sensor biasing requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for HZ2B1JTA-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 Technology Corp. is a Japanese semiconductor manufacturer specializing in microcontrollers, analog mixed-signal devices, and power management ICs for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise voltage reference applications in test equipment, medical instrumentation, and high-fidelity signal chains where conventional Zener diodes introduce unacceptable noise floor degradation.
FAQ
What is the exact zener voltage range for HZ2B1JTA-E?
The HZ2B1JTA-E has a guaranteed zener voltage range of 5.5 V minimum to 5.8 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This narrow 0.3 V window reflects its precision grading within the HZ-L family and supports accurate voltage setting without post-manufacture trimming in production systems.
Is HZ2B1JTA-E suitable for surface-mount assembly?
No, the HZ2B1JTA-E uses a DO-35 glass axial package with radial leads intended for through-hole mounting on printed circuit boards. It is not compatible with SMT reflow or wave soldering processes. For surface-mount equivalents, consider Renesas' HZ2B1JTA-E's SOD-123 packaged variants only if explicitly designated in official documentation - none are listed for this part number.
Does HZ2B1JTA-E meet RoHS requirements?
Yes, the HZ2B1JTA-E complies with EU RoHS Directive 2011/65/EU as confirmed by Renesas' material declarations and product change notifications. Lead content is below 0.1 wt% and all restricted substances are within specified limits, supporting environmentally compliant manufacturing for global markets.
What is the maximum reverse leakage current for HZ2B1JTA-E?
The HZ2B1JTA-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 2.0 V and Ta = 25°C. This low leakage enables use in ultra-low-power applications such as battery-backed memory retention circuits and energy-harvesting sensor nodes where standby current must remain below 10 μA.
Can HZ2B1JTA-E replace standard HZ-series Zeners in existing designs?
The HZ2B1JTA-E can directly replace standard HZ-series diodes with identical DO-35 packaging and overlapping voltage grades, provided the design benefits from its lower noise and tighter tolerance. However, due to its optimized low-noise construction, it should not be substituted with generic Zeners in noise-critical paths without verifying system-level SNR impact using the HZ2B1JTA-E specifically.
HZ2B1JTA-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:
- -
HZ2B1JTA-E FAQ
1.How can I place an order for HZ2B1JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ2B1JTA-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 HZ2B1JTA-E reliable?
The price and inventory of HZ2B1JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ2B1JTA-E is usually 5 days.
3.What payment methods are accepted for HZ2B1JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ2B1JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ2B1JTA-E?
HZ2B1JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ2B1JTA-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 HZ2B1JTA-E?
For technical support, including HZ2B1JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ2B1JTA-E requirements.
6.How does Aetrix verify that HZ2B1JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ2B1JTA-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 HZ2B1JTA-E meets industry standards.
7.What is the process for return or replacement of HZ2B1JTA-E?
All HZ2B1JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ2B1JTA-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 HZ2B1JTA-E part is unused and in its original packaging.
Return procedure for HZ2B1JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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