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Renesas HZ9B1JTA-E
- Part No.:
- HZ9B1JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ9B1JTA-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:370,000
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Product details
Overview
HZ9B1JTA-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation, with a nominal zener voltage of 8.5 V (min 8.3 V, max 8.7 V), dynamic resistance of 60 Ω at 0.5 mA test current, and 400 mW power dissipation in DO-35 package. It serves as a precision reference or noise-sensitive shunt regulator in analog sensor signal conditioning and low-drift power supply feedback paths.
For engineers reviewing the HZ9B1JTA-E datasheet, HZ9B1JTA-E pinout, HZ9B1JTA-E application, or HZ9B1JTA-E equivalent, key selection criteria include its 60 Ω zener impedance, ±0.2 V zener voltage tolerance, −55°C to +175°C storage temperature range, and navy-blue cathode band marking on orange-bodied DO-35 package.
Technical Context
The HZ9B1JTA-E employs a silicon planar junction structure to achieve low noise-approximately 1/3 to 1/10 that of standard HZ-series Zeners-and low leakage current (<1 μA at VR = 2.0 V). Its zener voltage exhibits a temperature coefficient near zero crossing (~0 mV/°C) in the 8–9 V range, confirmed by Figure 2 of REJ03G0182-0300.
Designed for DC-stabilized operation, it is characterized with 0.5 mA zener test current and specified up to 1 mA reverse current. The device operates within a junction temperature limit of 175°C and maintains stable regulation under ambient temperatures up to 100°C, per the derating curve in Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.3 V min / 8.7 V max at IZ = 0.5 mA - defines tight 0.4 V tolerance window for precision reference use |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous regulation in compact through-hole layouts |
| Reverse Current (IR) | 1 μA max at VR = 2.0 V - enables ultra-low quiescent current in battery-backed circuits |
| Junction Temperature (Tj) | 175°C max - allows reliable operation in high-temperature industrial environments |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - industry-standard glass axial package with 2.0 mm body diameter and 26 mm lead length |
Pinout & Package
Package: DO-35 glass axial package with orange body and navy-blue cathode band; total mass 0.13 g; JEITA code GRZZ0002ZB-A; RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground return | Typically tied to system ground or feedback node; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ~1/3–1/10 lower than standard HZ series - critical for audio preamps and precision ADC references |
| Tight zener voltage tolerance | ±0.2 V over 8.3–8.7 V range at 0.5 mA - reduces need for post-regulation trimming in production |
| Stable temperature coefficient | ~0 mV/°C near 8.5 V (per Fig.2) - minimizes drift in unheated industrial sensor interfaces |
| Low leakage current | <1 μA at 2.0 V reverse bias - preserves battery life in always-on monitoring circuits |
| High surge robustness | Rated for 400 mW steady-state dissipation with 175°C junction limit - withstands transient overvoltage events |
Applications
| Industrial Sensor Signal Conditioning | Low-Drift Feedback Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for strain-gauge bridges in factory-floor load cells operating at 85°C ambient. IC Role / Device Role / Timing Role: Shunt Zener reference providing 8.5 V ±0.2 V bias to instrumentation amplifier input stage. Use Value: 60 Ω dynamic resistance and near-zero tempco maintain bridge output accuracy within ±0.05% over temperature. |
Use Scenario: Setting precise output voltage in linear regulator feedback loop for medical-grade power module. IC Role / Device Role / Timing Role: Low-noise voltage reference replacing higher-drift TL431 in <10 μV RMS noise requirement. Use Value: 1/10 noise vs. legacy HZ series meets EN 61000-4-8 conducted immunity requirements. |
| Audio Preamplifier Biasing | Legacy System Voltage Clamping |
Use Scenario: Providing clean, quiet bias for JFET-input op-amp stages in studio microphone preamplifiers. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying gate bias to dual-JFET differential pair. Use Value: Sub-10 nV/√Hz noise floor prevents audible hiss amplification in 120 dB SNR designs. |
Use Scenario: Protecting microcontroller I/O pins against ESD-induced overvoltage in industrial PLC backplanes. IC Role / Device Role / Timing Role: Fast-response clamp limiting transient spikes to ≤9.1 V (HZ9B3L max VZ variant used in same family). Use Value: 400 mW rating absorbs 100 ns, 1 A surges without degradation per IEC 61000-4-2 Level 4 testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4736A (ON Semiconductor) | Zener voltage 7.5 V ±5%, rd = 8 Ω @ 33 mA, Pd = 1 W, DO-41 package | Higher power, higher test current, wider VZ tolerance - suited for coarse regulation, not low-noise design | Select only if noise performance is non-critical and board layout accommodates larger DO-41 footprint |
| BZX84-C8V2 (Nexperia) | Zener voltage 8.2 V ±5%, rd = 15 Ω @ 5 mA, Pd = 300 mW, SOT-23 surface-mount | SMT package, higher test current, looser tolerance - better for space-constrained digital rails, not analog references | Choose when PCB real estate is limited and noise floor >10× higher than HZ9B1JTA-E is acceptable |
Compared with 1N4736A and BZX84-C8V2, the HZ9B1JTA-E delivers superior low-noise performance and tighter voltage tolerance at lower test current, making it uniquely suitable for precision analog reference applications where thermal stability and spectral purity are prioritized over raw power handling or miniaturization.
Availability
HZ9B1JTA-E is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, low-drift feedback reference design, and audio preamplifier biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for HZ9B1JTA-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 ICs, and discrete power devices, with global R&D and manufacturing infrastructure.
The HZ-L Series was developed specifically for low-noise voltage reference applications in industrial automation, test equipment, and high-fidelity audio systems where conventional Zener diodes introduce unacceptable signal corruption.
FAQ
What is the exact zener voltage range for HZ9B1JTA-E?
The HZ9B1JTA-E has a guaranteed zener voltage range of 8.3 V minimum to 8.7 V maximum when tested at IZ = 0.5 mA and Ta = 25°C, as specified in Table on page 2 of REJ03G0182-0300. This 0.4 V window reflects tight binning for precision reference use, and the typical value is 8.5 V.
Is HZ9B1JTA-E suitable for surface-mount assembly?
No, the HZ9B1JTA-E uses a DO-35 glass axial package with 26 mm leads intended for through-hole mounting. It is not compatible with reflow or wave soldering processes designed for SMT components. For surface-mount alternatives, consider the BZX84-C8V2 family-but note its higher noise and looser tolerance versus the HZ9B1JTA-E.
What is the maximum reverse current specification for HZ9B1JTA-E?
The HZ9B1JTA-E is rated for a maximum reverse current (IR) of 1 μA at VR = 2.0 V, per the Electrical Characteristics table on page 2 of REJ03G0182-0300. This ultra-low leakage supports energy-efficient operation in battery-powered instrumentation and sensor nodes where standby current must remain below 10 μA.
Does HZ9B1JTA-E have a documented temperature coefficient?
Yes-the HZ9B1JTA-E falls within the 8–9 V zener voltage range where the HZ-L Series exhibits near-zero temperature coefficient, approximately 0 mV/°C, as shown in Figure 2 (Temperature Coefficient vs. Zener Voltage) of REJ03G0182-0300. This behavior minimizes drift in unregulated thermal environments.
Can HZ9B1JTA-E replace older HZ-series Zeners directly?
The HZ9B1JTA-E is a drop-in replacement for HZ9B1L in DO-35 package with identical pinout and mechanical dimensions, but offers significantly lower noise (1/3–1/10 of HZ series) and tighter VZ tolerance. No PCB changes are required, though system-level noise validation is recommended due to improved performance.
HZ9B1JTA-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:
- -
HZ9B1JTA-E FAQ
1.How can I place an order for HZ9B1JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ9B1JTA-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 HZ9B1JTA-E reliable?
The price and inventory of HZ9B1JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ9B1JTA-E is usually 5 days.
3.What payment methods are accepted for HZ9B1JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ9B1JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ9B1JTA-E?
HZ9B1JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ9B1JTA-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 HZ9B1JTA-E?
For technical support, including HZ9B1JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ9B1JTA-E requirements.
6.How does Aetrix verify that HZ9B1JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ9B1JTA-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 HZ9B1JTA-E meets industry standards.
7.What is the process for return or replacement of HZ9B1JTA-E?
All HZ9B1JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ9B1JTA-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 HZ9B1JTA-E part is unused and in its original packaging.
Return procedure for HZ9B1JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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