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Renesas HZS9.1NB2TA-E
- Part No.:
- HZS9.1NB2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS9.1NB2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZS9.1NB2TA-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized power supplies. It delivers a nominal zener voltage of 9.1 V (min 8.89 V, max 9.29 V) at 5 mA test current, with dynamic resistance of 6.0 Ω, reverse current ≤0.5 μA at 7.0 V, and maximum power dissipation of 400 mW in the MHD package.
For engineers reviewing the HZS9.1NB2TA-E datasheet, HZS9.1NB2TA-E pinout, HZS9.1NB2TA-E application, or HZS9.1NB2TA-E equivalent, this device serves as a compact, high-stability reference element in analog sensing front-ends, voltage monitor circuits, and low-current bias networks where tight tolerance and low impedance are critical.
Technical Context
The HZS9.1NB2TA-E operates as a two-terminal shunt regulator, maintaining stable output voltage across varying load currents by conducting excess current to ground when input exceeds its zener threshold. Its 6.0 Ω dynamic resistance ensures minimal voltage deviation under small-signal AC perturbations.
Designed for operation at 5 mA nominal zener current, it exhibits a zener voltage temperature coefficient near zero (≈0 mV/°C) within the 8–10 V range per Figure 2, enabling stable reference performance over ambient temperatures from –55°C to +175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.89 V to 9.29 V at IZ = 5 mA - defines precise regulation window for feedback or reference nodes |
| Dynamic Resistance (rd) | 6.0 Ω at IZ = 5 mA - determines AC voltage ripple rejection in regulated rails |
| Reverse Current (IR) | ≤0.5 μA at VR = 7.0 V - ensures negligible leakage in standby or high-impedance bias paths |
| Power Dissipation (Pd) | 400 mW - supports continuous operation up to ~44 mA at 9.1 V without derating below 25°C |
| Junction Temperature (Tj) | 200°C - enables reliable operation in thermally constrained PCB layouts or sealed enclosures |
| Package | MHD (JEITA GRZZ0002ZC-A) - 5 mm pitch, axial-leaded, 2.0 mm diameter body for automated insertion |
Pinout & Package
The HZS9.1NB2TA-E uses the MHD axial-leaded package (JEITA code GRZZ0002ZC-A), with cathode identified by a black band. Lead spacing is 5 mm, body diameter 2.0 mm, length 26.0 mm, and typical mass 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; sinks current during zener conduction |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower-potential return path |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 6.0 Ω at 5 mA - improves regulation accuracy under dynamic load transients |
| Tight zener voltage tolerance | Grade B2: ±2.2% (8.89–9.29 V) - reduces need for post-regulation trimming |
| Ultra-low leakage current | ≤0.5 μA at 7.0 V - preserves battery life in always-on monitoring circuits |
| High junction temperature rating | 200°C - supports use in automotive engine bay or industrial motor drive control boards |
| Automated insertion compatibility | 5 mm pitch, MHD package - enables high-throughput placement in legacy through-hole assembly lines |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reset Circuit |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs in temperature/humidity transmitters operating from unregulated 12 V DC rails. IC Role / Device Role / Timing Role: Zener diode provides fixed 9.1 V reference to op-amp gain stage and ADC VREF pin. Use Value: 6.0 Ω dynamic resistance minimizes noise coupling into analog signal chain, improving effective resolution by ≥0.5 LSB. |
Use Scenario: Generating a clean, temperature-stable reset threshold for an ARM Cortex-M0 MCU powered from a 9 V battery with aging voltage drift. IC Role / Device Role / Timing Role: Shunt regulator establishes precise 9.1 V trip point for external reset supervisor IC. Use Value: ±2.2% VZ tolerance eliminates need for external resistor divider calibration, reducing BOM count by one component. |
| Programmable Logic Controller I/O Module Protection | LED Driver Current Reference |
Use Scenario: Clamping transient overvoltage on 24 V digital input channels exposed to inductive switching noise in factory automation cabinets. IC Role / Device Role / Timing Role: Zener diode acts as fast-acting shunt clamp, diverting surge energy before reaching optocoupler input. Use Value: 400 mW power rating sustains 100 ms transients up to 200 V without degradation, meeting IEC 61000-4-4 Level 3. |
Use Scenario: Setting constant current for indicator LEDs in medical device status panels requiring consistent luminance over 0–60°C ambient range. IC Role / Device Role / Timing Role: Provides stable bias voltage to current-setting transistor base in linear LED driver topology. Use Value: Near-zero temperature coefficient in 9.1 V range maintains ±1.5% current stability across full operating temperature span. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C9V1 (Nexperia) | VZ = 8.6–9.6 V (±5%), rd = 10 Ω, Pd = 500 mW, DO-35 package | Wider VZ tolerance and higher impedance reduce precision in reference designs but support higher surge energy handling | Select when cost sensitivity outweighs regulation accuracy and board space permits larger DO-35 footprint |
| 1N4739A (ON Semiconductor) | VZ = 8.64–9.36 V (±5%), rd = 8 Ω, Pd = 1 W, DO-41 package | Higher power rating allows use in higher-current shunt regulators; larger DO-41 body incompatible with 5 mm pitch insertion | Choose for >100 mA shunt applications where thermal margin is critical and automated insertion is not required |
Compared with BZX55-C9V1 and 1N4739A, the HZS9.1NB2TA-E offers tighter voltage tolerance and lower dynamic impedance in a compact MHD package optimized for high-volume through-hole assembly-making it preferred for space-constrained, precision analog designs where repeatability and thermal stability are prioritized over raw power handling.
Availability
HZS9.1NB2TA-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reset circuits, PLC I/O protection, and LED driver reference applications requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant sourcing.
Supply support for HZS9.1NB2TA-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 delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT systems.
The HZS-N Series was developed as a family of precision silicon planar Zener diodes targeting cost-sensitive yet performance-critical voltage reference and stabilization roles in industrial power supplies and analog signal chains.
FAQ
What is the zener voltage tolerance for HZS9.1NB2TA-E?
The HZS9.1NB2TA-E has a Grade B2 zener voltage specification of 8.89 V to 9.29 V at 5 mA test current, corresponding to ±2.2% tolerance around the nominal 9.1 V rating. This tight tolerance is confirmed in the "Electrical Characteristics" table on page 3 of Renesas document REJ03G0185-0300 Rev.3.00 and enables direct use in precision reference applications without external trimming. The HZS9.1NB2TA-E achieves this via process-controlled doping and planar junction geometry.
Does HZS9.1NB2TA-E support automatic insertion in manufacturing?
Yes, the HZS9.1NB2TA-E uses the MHD package (JEITA code GRZZ0002ZC-A) with standardized 5 mm lead pitch and axial-leaded configuration, explicitly stated in the "Ordering Information" section as "Suitable for 5mm-pitch high speed automatic insertion." Its 2.0 mm body diameter and 26.0 mm length comply with industry-standard tape-and-reel and bulk feeding requirements for through-hole placement equipment.
What is the maximum reverse current specification for HZS9.1NB2TA-E?
The HZS9.1NB2TA-E specifies a maximum reverse current (IR) of 0.5 μA at VR = 7.0 V, per the "Electrical Characteristics" table on page 3 of the Renesas datasheet. This ultra-low leakage ensures minimal error contribution in high-impedance bias networks and extends battery life in always-on monitoring circuits where the HZS9.1NB2TA-E serves as a reference source.
Can HZS9.1NB2TA-E be used in automotive under-hood applications?
The HZS9.1NB2TA-E has a storage temperature range of –55°C to +175°C and a junction temperature limit of 200°C, satisfying thermal requirements for many under-hood locations. However, Renesas classifies it as "Standard" grade per Quality Grade Notice (page 7), meaning it is not qualified for automotive safety-critical systems without additional validation. For non-safety HZS9.1NB2TA-E use cases like cabin sensor power rails, design validation per AEC-Q200 is recommended.
What is the dynamic resistance of HZS9.1NB2TA-E and why does it matter?
The HZS9.1NB2TA-E has a dynamic resistance (rd) of 6.0 Ω at IZ = 5 mA, as specified in the Electrical Characteristics table. This parameter quantifies how much the zener voltage changes per unit change in current - a lower value means better regulation under varying load conditions. In practice, the 6.0 Ω rd of the HZS9.1NB2TA-E limits output voltage deviation to <30 mV for ±5 mA load swings, making it suitable for precision analog references.
HZS9.1NB2TA-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:
- -
HZS9.1NB2TA-E FAQ
1.How can I place an order for HZS9.1NB2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS9.1NB2TA-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 HZS9.1NB2TA-E reliable?
The price and inventory of HZS9.1NB2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS9.1NB2TA-E is usually 5 days.
3.What payment methods are accepted for HZS9.1NB2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS9.1NB2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS9.1NB2TA-E?
HZS9.1NB2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS9.1NB2TA-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 HZS9.1NB2TA-E?
For technical support, including HZS9.1NB2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS9.1NB2TA-E requirements.
6.How does Aetrix verify that HZS9.1NB2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS9.1NB2TA-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 HZS9.1NB2TA-E meets industry standards.
7.What is the process for return or replacement of HZS9.1NB2TA-E?
All HZS9.1NB2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS9.1NB2TA-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 HZS9.1NB2TA-E part is unused and in its original packaging.
Return procedure for HZS9.1NB2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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