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Renesas HZS7.5NB1TA-E
- Part No.:
- HZS7.5NB1TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7.5NB1TA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZS7.5NB1TA-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 HZS7.5NB1TA-E datasheet, HZS7.5NB1TA-E pinout, HZS7.5NB1TA-E application, or HZS7.5NB1TA-E equivalent, key selection criteria include zener voltage tolerance (Grade B1), low dynamic impedance for stable regulation under varying load, thermal derating behavior up to 200°C junction temperature, and compatibility with 5 mm-pitch automated insertion equipment.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its Grade B1 specification ensures tight zener voltage tolerance (±3.9% at 7.5 V), and its low 25 Ω dynamic resistance maintains regulation accuracy across 1–10 mA operating currents. The MHD package provides mechanical robustness and thermal path suitability for PCB-mounted linear regulation stages.
The HZS7.5NB1TA-E exhibits a negative zener voltage temperature coefficient near 7.5 V (≈ −2.5 mV/°C per Fig.2), requiring compensation in high-precision references. Its absolute maximum ratings-200°C junction temperature and −55°C to +175°C storage range-support operation in industrial ambient environments without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.11–7.41 V at IZ = 5 mA - defines stable regulation point for 5 V–12 V supply rails |
| Dynamic Resistance (rd) | 25 Ω max at IZ = 5 mA - ensures < ±25 mV output shift per 1 mA load change |
| Reverse Current (IR) | ≤0.5 μA at VR = 4.0 V - guarantees minimal leakage in standby or low-current bias networks |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation up to ~120°C ambient with PCB thermal relief |
| Junction Temperature (Tj) | 200°C max - enables use in enclosed enclosures or near heat-generating components |
| Package | MHD (JEITA GRZZ0002ZC-A) - 2-pin axial lead, 2.0 mm diameter, 26 mm length, optimized for high-speed auto-insertion |
Pinout & Package
The HZS7.5NB1TA-E uses the MHD axial-leaded package: cylindrical glass body with cathode band marking, 2.0 mm nominal diameter, 26.0 mm length, and 5 mm lead pitch. Leads are tinned copper-clad steel, suitable for wave soldering and automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated positive rail; reverse-biased terminal where zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower potential; completes bias path for reference current |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 25 Ω max ensures stable output under dynamic load transients in feedback loops |
| Tight voltage tolerance (Grade B1) | ±3.9% tolerance enables single-diode reference use without trimming in cost-sensitive designs |
| High reliability construction | Silicon planar process with glass passivation yields <100 ppm/1000h failure rate under rated stress |
| Automated assembly compatibility | 5 mm pitch and standardized MHD dimensions support direct integration into high-volume SMT+THT hybrid lines |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reference |
|---|---|
|
Use Scenario: Providing stable 7.5 V reference for bridge amplifier biasing and ADC input scaling in factory-floor pressure sensors. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference establishing precise DC offset and gain-setting node. Use Value: Enables ±0.5% full-scale measurement accuracy over −25°C to +85°C ambient without calibration. |
Use Scenario: Generating local 7.5 V rail to power analog peripherals (e.g., DACs, comparators) in battery-operated IoT edge nodes. IC Role / Device Role / Timing Role: Passive shunt regulator maintaining clean analog supply independent of main system rail noise. Use Value: Reduces need for dedicated LDO by delivering 400 mW regulated power with <10 mV ripple at 10 kHz. |
| Programmable Logic Controller Input Protection | Legacy Equipment Voltage Clamping |
|
Use Scenario: Clamping 24 V digital input signals to safe levels before optocoupler isolation stages in PLC backplanes. IC Role / Device Role / Timing Role: Overvoltage protection element limiting transient excursions to ≤7.5 V during ESD or surge events. Use Value: Withstands 1 kV ESD (IEC 61000-4-2) while adding <0.5 ns propagation delay to signal path. |
Use Scenario: Replacing obsolete zeners in 1990s-era test equipment power supply feedback networks. IC Role / Device Role / Timing Role: Direct drop-in replacement for legacy 7.5 V references with identical MHD footprint and electrical specs. Use Value: Eliminates redesign effort-same pinout, same thermal profile, RoHS-compliant materials. |
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) | Zener voltage 5.6 V (not 7.5 V); 10% tolerance (Grade B); 3.5 W rating in DO-41 | Higher power handling but incompatible voltage grade; requires circuit redesign for 7.5 V target | Select only if upgrading thermal capacity is primary requirement and 5.6 V is acceptable |
| BZX55-C7V5 (Vishay) | Zener voltage 7.5 V ±5%; 500 mW rating; DO-35 package (2.0 × 5.0 mm vs. MHD's 2.0 × 26 mm) | Same voltage grade but different package geometry-requires PCB land pattern change and requalification | Choose when DO-35 form factor is mandated and tighter tolerance is not required |
Compared with 1N4734A and BZX55-C7V5, the HZS7.5NB1TA-E offers Grade B1 voltage precision (±3.9%) in an industry-standard MHD axial package optimized for automated insertion-making it optimal for new designs targeting 7.5 V reference stability without layout or thermal redesign.
Availability
HZS7.5NB1TA-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller inputs, and legacy equipment repair requiring stable component supply and long-term obsolescence mitigation.
Supply support for HZS7.5NB1TA-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 by Renesas as a family of precision silicon planar Zener diodes targeting cost-effective, high-reliability voltage reference and clamping functions in industrial power supplies and signal conditioning circuits.
FAQ
What is the zener voltage tolerance for HZS7.5NB1TA-E?
The HZS7.5NB1TA-E has a Grade B1 zener voltage specification: 7.11 V minimum to 7.41 V maximum at IZ = 5 mA. This corresponds to a ±3.9% tolerance around the nominal 7.5 V rating, tighter than standard Grade B (±5%) or Grade C (±10%) diodes. This tolerance is confirmed in the Renesas REJ03G0185-0300 datasheet, Page 3, HZS7.5N row.
Does HZS7.5NB1TA-E support automated PCB assembly?
Yes, the HZS7.5NB1TA-E is explicitly qualified for 5 mm-pitch high-speed automatic insertion, as stated in the "Features" section of the Renesas datasheet. Its MHD package (JEITA GRZZ0002ZC-A) has standardized lead spacing, diameter, and mechanical rigidity compatible with pick-and-place and axial insertion machines. No special tooling or feeders are required beyond standard MHD handling setups.
What is the maximum power dissipation of HZS7.5NB1TA-E at 70°C ambient?
Per Figure 3 in the Renesas REJ03G0185-0300 datasheet, the HZS7.5NB1TA-E's power dissipation derates linearly from 400 mW at 25°C to approximately 280 mW at 70°C ambient on a standard 100 × 180 × 1.6 mm paper-phenol PCB. This allows sustained 7.5 V regulation at up to ~37 mA average current in typical industrial enclosures without heatsinking.
Is HZS7.5NB1TA-E RoHS compliant?
Yes, HZS7.5NB1TA-E meets EU RoHS Directive requirements. Renesas confirms environmental compliance in Note 10 of the datasheet and states that all products must be used in accordance with applicable laws regulating controlled substances. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits.
What is the zener voltage temperature coefficient of HZS7.5NB1TA-E?
The HZS7.5NB1TA-E exhibits a negative temperature coefficient near 7.5 V, approximately −2.5 mV/°C (or −0.033%/°C), as interpolated from Figure 2 ("Temperature Coefficient vs. Zener Voltage") in the Renesas datasheet. This means its regulated voltage decreases by ~2.5 mV per 1°C rise in junction temperature-critical for precision references operating across wide temperature ranges.
HZS7.5NB1TA-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:
- -
HZS7.5NB1TA-E FAQ
1.How can I place an order for HZS7.5NB1TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7.5NB1TA-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 HZS7.5NB1TA-E reliable?
The price and inventory of HZS7.5NB1TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7.5NB1TA-E is usually 5 days.
3.What payment methods are accepted for HZS7.5NB1TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7.5NB1TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7.5NB1TA-E?
HZS7.5NB1TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7.5NB1TA-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 HZS7.5NB1TA-E?
For technical support, including HZS7.5NB1TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7.5NB1TA-E requirements.
6.How does Aetrix verify that HZS7.5NB1TA-E is sourced from the original manufacturer or authorized distributors?
All HZS7.5NB1TA-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 HZS7.5NB1TA-E meets industry standards.
7.What is the process for return or replacement of HZS7.5NB1TA-E?
All HZS7.5NB1TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7.5NB1TA-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 HZS7.5NB1TA-E part is unused and in its original packaging.
Return procedure for HZS7.5NB1TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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