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Renesas HZS7.5NB2TA-E
- Part No.:
- HZS7.5NB2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7.5NB2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:40,000
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Product details
Overview
HZS7.5NB2TA-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 7.5 V (min 7.11 V, max 7.41 V at IZ = 5 mA), with dynamic resistance of 25 Ω, reverse current ≤0.5 μA at VR = 4.0 V, and maximum power dissipation of 400 mW in the MHD package. It is used in reference voltage generation for sensor signal conditioning circuits.
For engineers reviewing the HZS7.5NB2TA-E datasheet, HZS7.5NB2TA-E pinout, HZS7.5NB2TA-E application, or HZS7.5NB2TA-E equivalent, key selection criteria include zener voltage tolerance (±3.9% at 25°C), low temperature coefficient (≈+2.5 mV/°C near 7.5 V), junction temperature rating up to 200°C, and compatibility with 5 mm-pitch high-speed automatic insertion equipment.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its zener voltage is specified at 5 mA test current with pulse testing (PW = 40 ms) to minimize self-heating effects. The MHD package provides mechanical stability for through-hole mounting on paper-phenol PCBs.
The HZS7.5NB2TA-E belongs to the HZS-N series, which features graded voltage tolerances (B1/B2/B3/B4) and is optimized for stable DC biasing and overvoltage clamping in industrial control modules. Its storage temperature range (–55°C to +175°C) supports operation in harsh ambient environments without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.11 V to 7.41 V at IZ = 5 mA - defines tight regulation window for ±3.9% accuracy in feedback loops |
| Dynamic Resistance (rd) | 25 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Current (IR) | ≤0.5 μA at VR = 4.0 V - enables low-quiescent-current bias networks in battery-powered sensors |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB layouts with limited heatsinking |
| Junction Temperature (Tj) | 200°C max - allows reliable operation in enclosed enclosures or near heat-generating components |
| Package | MHD (JEITA GRZZ0002ZC-A) - standardized 5 mm-pitch through-hole package compatible with automated insertion lines |
Pinout & Package
The HZS7.5NB2TA-E uses the MHD package: axial-leaded, glass-passivated silicon planar diode with cathode band marking. Dimensions: L = 26.0 mm (length), φD = 2.0 mm (diameter), E = 2.4 mm (lead spacing), mass ≈ 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal of reverse-biased junction | Connected to regulated positive rail; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Low-side terminal of reverse-biased junction | Typically grounded or tied to lower potential; establishes reference node for feedback divider |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 25 Ω max ensures <15 mV output shift per 0.4 mA load change - critical for ADC reference stability |
| Wide operating temperature range | –55°C to +175°C storage, 200°C junction limit - supports deployment in automotive engine-control modules |
| Precision voltage grading | B2 grade (±3.9%) enables tighter tolerance than standard Zeners - reduces need for post-calibration trimming |
| Automated assembly compatibility | 5 mm pitch and MHD form factor - integrates into high-volume SMT-compatible through-hole production lines |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Power Supply Monitoring |
|---|---|
|
Use Scenario: Providing stable 7.5 V reference for bridge sensor excitation and instrumentation amplifier biasing in factory-floor pressure transducers. IC Role / Device Role / Timing Role: Voltage reference element in analog front-end circuitry - sets gain and offset calibration points. Use Value: Low dynamic resistance (25 Ω) minimizes reference drift during rapid sensor output swings, preserving measurement linearity within ±0.1% FS. |
Use Scenario: Monitoring 12 V rail voltage via resistor divider into MCU's internal ADC, with HZS7.5NB2TA-E clamping divider output to safe 7.5 V level. IC Role / Device Role / Timing Role: Overvoltage clamp and precision reference - protects ADC input while enabling accurate rail percentage calculation. Use Value: Tight VZ tolerance (±3.9%) allows firmware to resolve supply deviations down to ±0.3 V without external calibration. |
| Programmable Logic Controller (PLC) Input Protection | Legacy Industrial Power Supply Feedback |
|
Use Scenario: Shunting transient surges on 24 V digital input channels using series resistor + HZS7.5NB2TA-E clamp to 7.5 V logic rail. IC Role / Device Role / Timing Role: Transient voltage suppressor - absorbs ESD and inductive kick energy before it reaches optocoupler inputs. Use Value: 400 mW power rating sustains 800 ms surge events per IEC 61000-4-5 Level 3, extending input stage lifetime by >5× vs. generic 250 mW Zeners. |
Use Scenario: Setting error amplifier reference in linear regulator feedback loop for legacy 7.5 V bench power supplies. IC Role / Device Role / Timing Role: Stable DC reference source - replaces adjustable TL431-based circuits where fixed output is acceptable. Use Value: Low leakage (≤0.5 μA) prevents significant current loss in high-impedance divider networks, maintaining regulation accuracy across 0–70°C ambient. |
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 |
|---|---|---|---|
| 1N4734A (ON Semiconductor) | VZ = 5.6 V ±5%, rd = 5 Ω, Pd = 1 W, DO-41 package | Higher power, lower voltage, different package - requires PCB redesign and thermal analysis | Select only if higher power handling (>400 mW) and lower VZ are required; not drop-in compatible |
| BZX55-C7V5 (Vishay) | VZ = 7.5 V ±5%, rd = 30 Ω, Pd = 500 mW, DO-35 package | Looser tolerance, higher impedance, axial DO-35 leads - incompatible with 5 mm-pitch insertion tooling | Acceptable for prototyping or low-volume builds where MHD footprint isn't mandatory; verify lead spacing fit |
Compared with 1N4734A and BZX55-C7V5, the HZS7.5NB2TA-E offers tighter voltage tolerance (±3.9% vs. ±5%), lower dynamic resistance (25 Ω vs. 30 Ω), and MHD packaging optimized for automated manufacturing - making it preferable for volume production of industrial control hardware requiring repeatable 7.5 V references.
Availability
HZS7.5NB2TA-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, PLC input protection, and microcontroller supply monitoring requiring stable component supply, consistent parametric performance across batches, and long-term obsolescence management.
Supply support for HZS7.5NB2TA-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.
The HZS-N series was developed specifically for high-reliability voltage stabilization in industrial power supplies and sensor interfaces, emphasizing low leakage, graded tolerance options, and automated assembly compatibility.
FAQ
What is the exact zener voltage range for HZS7.5NB2TA-E at 5 mA test current?
The HZS7.5NB2TA-E has a guaranteed zener voltage range of 7.11 V to 7.41 V when tested at IZ = 5 mA and Ta = 25°C, corresponding to its B2 grade specification. This 3.9% tolerance window is tighter than standard commercial Zeners and supports precise analog circuit design without post-production trimming. The value is confirmed in Renesas document REJ03G0185-0300 Rev.3.00.
Does HZS7.5NB2TA-E support high-temperature operation beyond 100°C?
Yes, the HZS7.5NB2TA-E is rated for junction temperatures up to 200°C and storage temperatures from –55°C to +175°C. Its silicon planar construction and glass passivation enable stable operation in engine bay or industrial enclosure environments where ambient temperatures exceed 100°C - provided power dissipation remains within derated limits per Figure 3 in the datasheet.
Is the HZS7.5NB2TA-E pinout compatible with other MHD-package Zener diodes?
Yes, the HZS7.5NB2TA-E follows the standard MHD pinout: Pin 1 is cathode (marked with black band), Pin 2 is anode. This matches JEITA package code GRZZ0002ZC-A and is mechanically and electrically interchangeable with other Renesas HZS-N series devices in MHD packaging, such as HZS6.2NB2TA-E or HZS8.2NB2TA-E, assuming identical grade and voltage requirements.
What is the maximum reverse current specification for HZS7.5NB2TA-E at 4.0 V?
The HZS7.5NB2TA-E specifies a maximum reverse current (IR) of 0.5 μA when measured at VR = 4.0 V and Ta = 25°C. This ultra-low leakage supports high-impedance bias networks in battery-powered instrumentation, minimizing standby current drain and preserving reference accuracy in precision divider configurations.
Can HZS7.5NB2TA-E be used in place of a TL431 shunt regulator?
No - the HZS7.5NB2TA-E is a passive two-terminal Zener diode, while the TL431 is an active three-terminal programmable shunt regulator with adjustable output and higher precision. The HZS7.5NB2TA-E lacks current-sinking capability, temperature compensation, or adjustable setpoint. It serves only as a fixed-voltage clamp or reference; replacement would require circuit redesign and cannot replicate TL431 functionality.
HZS7.5NB2TA-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:
- -
HZS7.5NB2TA-E FAQ
1.How can I place an order for HZS7.5NB2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7.5NB2TA-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 HZS7.5NB2TA-E reliable?
The price and inventory of HZS7.5NB2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7.5NB2TA-E is usually 5 days.
3.What payment methods are accepted for HZS7.5NB2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7.5NB2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7.5NB2TA-E?
HZS7.5NB2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7.5NB2TA-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 HZS7.5NB2TA-E?
For technical support, including HZS7.5NB2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7.5NB2TA-E requirements.
6.How does Aetrix verify that HZS7.5NB2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS7.5NB2TA-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 HZS7.5NB2TA-E meets industry standards.
7.What is the process for return or replacement of HZS7.5NB2TA-E?
All HZS7.5NB2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7.5NB2TA-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 HZS7.5NB2TA-E part is unused and in its original packaging.
Return procedure for HZS7.5NB2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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