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Renesas HZS9B2TA-E
- Part No.:
- HZS9B2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS9B2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZS9B2TA-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 9.5 V (min) to 9.9 V (max) at 5 mA test current, 5.0 Ω dynamic resistance, ≤1 µA reverse leakage at 7.5 V, and 400 mW maximum power dissipation in the MHD package.
For engineers reviewing the HZS9B2TA-E datasheet, HZS9B2TA-E pinout, HZS9B2TA-E application, or HZS9B2TA-E equivalent, this device serves as a compact, high-stability reference element in analog sensing circuits, voltage clamp stages, and biasing networks where tight tolerance and low temperature coefficient are critical.
Technical Context
The HZS9B2TA-E operates as a two-terminal shunt regulator with cathode-anode polarity, relying on controlled reverse-bias avalanche breakdown. Its zener voltage exhibits a positive temperature coefficient near +5.0 mV/°C (≈+0.055 %/°C) in the 9–10 V range, enabling predictable thermal drift compensation in multi-device references.
Designed for DC operation only, it delivers stable regulation under fixed-current bias conditions (IZ = 5 mA), with dynamic resistance measured at that point. The MHD package supports high-speed automatic insertion at 5 mm pitch and provides thermal dissipation sufficient for ambient temperatures up to 125°C at full rated power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.5 V min to 9.9 V max at IZ = 5 mA - defines regulated output voltage window under standard test condition |
| Dynamic Resistance (rd) | 5.0 Ω max at IZ = 5 mA - determines load regulation sensitivity and ripple rejection capability |
| Reverse Leakage Current (IR) | ≤1 µA max at VR = 7.5 V - ensures minimal standby power loss in high-impedance bias networks |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - sets absolute upper limit for continuous DC power handling in PCB-mounted use |
| Junction Temperature (Tj) | 200°C max - enables reliable operation in thermally constrained industrial environments with adequate heatsinking |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - standardized 2-pin axial lead package with 5 mm pitch compatibility for automated assembly |
Pinout & Package
The HZS9B2TA-E is housed in the MHD package: a miniature axial-leaded silicon planar diode case with cathode band marking, 2.0 mm diameter body, 26 mm lead length, and 0.4 mm lead diameter. It conforms to JEITA package code GRZZ0002ZC-A and Renesas internal code MHD.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Regulated Output Terminal | Connected to higher potential node; carries reverse current during regulation; marked by lake-blue band |
| 2 (Anode) | Reference Ground Terminal | Connected to lower potential or circuit common; completes current path through external series resistor |
Key Features
| Feature | Design Value |
|---|---|
| Low Zener Impedance | 5.0 Ω max ensures minimal output voltage shift under varying load currents in feedback or reference paths |
| Stable Low-Leakage Performance | ≤1 µA IR at 7.5 V enables use in ultra-low-power sensor biasing without compromising accuracy |
| Wide Zener Voltage Range Coverage | Part of HZS Series spanning 1.6 V to 38 V - allows design reuse across multiple supply rail levels |
| Automated Insertion Compatibility | 5 mm pitch and standardized MHD footprint support high-throughput placement in industrial PCB assembly lines |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reset Circuit Reference |
|---|---|
Use Scenario: Precision offset adjustment and gain calibration in 4–20 mA transmitter front-ends operating at 24 V DC supply. IC Role / Device Role / Timing Role: Zener diode provides stable 9.5–9.9 V reference for op-amp biasing and ADC input scaling. Use Value: Tight 400 mV zener voltage tolerance and 5.0 Ω dynamic resistance minimize calibration drift over temperature and time. |
Use Scenario: Generating a clean, noise-immune reset threshold for 3.3 V microcontrollers powered from unregulated 9 V wall adapters. IC Role / Device Role / Timing Role: Shunt regulator clamps reset line voltage to ~9.7 V until RC decay triggers POR circuitry. Use Value: ≤1 µA reverse leakage prevents premature discharge of timing capacitor, ensuring consistent reset timing. |
| Linear Regulator Error Amplifier Bias | Overvoltage Clamp in Analog Front-Ends |
Use Scenario: Setting precise reference voltage for error amplifier inputs in discrete 12 V linear regulators driving motor control logic. IC Role / Device Role / Timing Role: Provides temperature-compensated 9.7 V reference to define output setpoint via resistive divider. Use Value: +5.0 mV/°C temperature coefficient allows predictable tracking against other components' thermal drift. |
Use Scenario: Protecting ADC inputs from transient surges in HVAC control panels exposed to relay switching noise. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limits analog input to 9.9 V, diverting excess energy to ground. Use Value: 400 mW power rating sustains short-duration transients without degradation or thermal runaway. |
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 |
|---|---|---|---|
| BZX55C9V1 (ON Semiconductor) | 9.1 V nominal (±5%), 10 Ω rd, 500 mW Pd, DO-35 package | Higher dynamic impedance reduces regulation precision; larger DO-35 footprint requires layout change | Acceptable where ±5% VZ tolerance and relaxed stability suffice |
| MMSZ5239B (Diodes Inc.) | 9.1 V nominal (±5%), 10 Ω rd, SOD-123 surface-mount package | SMD form factor eliminates through-hole assembly; lacks MHD's 5 mm pitch automation compatibility | Preferred for space-constrained PCBs where reflow soldering is used instead of wave soldering |
Compared with BZX55C9V1 and MMSZ5239B, the HZS9B2TA-E offers tighter 9.5–9.9 V tolerance, lower 5.0 Ω dynamic resistance, and axial MHD packaging optimized for high-volume automated insertion - making it superior for industrial-grade analog references requiring long-term stability and manufacturing scalability.
Availability
HZS9B2TA-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reset circuits, linear regulator biasing, and analog front-end overvoltage protection requiring stable component supply and traceable sourcing.
Supply support for HZS9B2TA-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 connectivity solutions for industrial, automotive, and enterprise applications.
The HZS Series was developed by Renesas as a family of precision silicon planar Zener diodes targeting cost-sensitive yet reliability-critical voltage reference and stabilization functions in industrial power supplies and analog signal chains.
FAQ
What is the exact zener voltage range specified for HZS9B2TA-E?
The HZS9B2TA-E has a guaranteed zener voltage range of 9.5 V minimum to 9.9 V maximum when tested at IZ = 5 mA and Ta = 25°C. This 400 mV span reflects its "B2" grade within the HZS9 family and is confirmed in Renesas document REJ03G0184-0500 Rev.5.00, Page 3.
Does HZS9B2TA-E support AC or pulsed operation?
No - the HZS9B2TA-E is characterized and rated exclusively for DC operation, as explicitly noted in the datasheet ("Note: 1. Tested with DC."). Its dynamic resistance and voltage specifications apply only under steady-state reverse-bias conditions; AC or transient behavior is not guaranteed or documented.
What is the thermal coefficient behavior of HZS9B2TA-E?
The HZS9B2TA-E exhibits a positive zener voltage temperature coefficient of approximately +5.0 mV/°C (or +0.055 %/°C) in the 9–10 V range, as shown in Figure 2 of the datasheet. This predictable drift enables thermal compensation in multi-diode reference designs.
Can HZS9B2TA-E be used in place of HZS9B1 or HZS9B3?
No - HZS9B2TA-E is not interchangeable with HZS9B1 (9.3–9.7 V) or HZS9B3 (9.3–9.7 V) due to distinct zener voltage ranges. Each grade is separately binned and tested; substituting across grades risks violating system-level voltage tolerance requirements.
Is the MHD package of HZS9B2TA-E RoHS compliant?
Yes - Renesas confirms RoHS compliance for the HZS Series per EU Directive 2011/65/EU. The MHD package uses lead-free terminations and complies with all restricted substance thresholds, as stated in Renesas environmental documentation and verified through distributor certifications.
HZS9B2TA-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:
- -
HZS9B2TA-E FAQ
1.How can I place an order for HZS9B2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS9B2TA-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 HZS9B2TA-E reliable?
The price and inventory of HZS9B2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS9B2TA-E is usually 5 days.
3.What payment methods are accepted for HZS9B2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS9B2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS9B2TA-E?
HZS9B2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS9B2TA-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 HZS9B2TA-E?
For technical support, including HZS9B2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS9B2TA-E requirements.
6.How does Aetrix verify that HZS9B2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS9B2TA-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 HZS9B2TA-E meets industry standards.
7.What is the process for return or replacement of HZS9B2TA-E?
All HZS9B2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS9B2TA-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 HZS9B2TA-E part is unused and in its original packaging.
Return procedure for HZS9B2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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