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Renesas HZ7.5BPTK-E
- Part No.:
- HZ7.5BPTK-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ7.5BPTK-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:207,500
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Product details
Overview
HZ7.5BPTK-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 7.5 V, 400 mW power dissipation, 60 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package with navy blue cathode band. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ7.5BPTK-E datasheet, HZ7.5BPTK-E pinout, HZ7.5BPTK-E application, or HZ7.5BPTK-E equivalent, key selection criteria include zener voltage tolerance (±0.2 V), low noise performance (1/3–1/10 of standard HZ series), temperature coefficient (−0.04 %/°C), and DO-35 mechanical compatibility for through-hole PCB assembly.
Technical Context
The HZ7.5BPTK-E operates as a two-terminal shunt regulator with DC-tested zener breakdown characteristics. Its low dynamic resistance (60 Ω) and tight voltage tolerance (7.5 V min/max = 7.0–7.3 V) enable high-precision voltage referencing under low-current conditions (IZ = 0.5 mA).
Designed for low-noise analog systems, it achieves reduced diode noise via optimized silicon planar junction structure and controlled doping profile. The −0.04 %/°C temperature coefficient ensures minimal drift across industrial ambient ranges (−55 to +175 °C storage, 175 °C max junction temperature).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.0–7.3 V at IZ = 0.5 mA - defines stable regulation range for low-power reference design |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact through-hole layouts without forced cooling |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - preserves accuracy in high-impedance bias networks |
| Temperature Coefficient (γZ) | −0.04 %/°C - enables predictable, low-drift behavior in temperature-varying environments |
| Junction Temperature (Tj) | 175 °C - allows reliable operation in thermally constrained enclosures or high-ambient settings |
Pinout & Package
Package: DO-35 glass axial package (JEITA code GRZZ0002ZB-A), orange body color, navy blue cathode band, 2.0 mm diameter × 26.0 mm length, 0.13 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; polarity-sensitive for correct shunt operation |
| 2 (Anode) | Reference ground terminal | Connected to circuit common; establishes reverse-bias condition with external series resistor |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener junction | Diode noise level ≈ 1/3–1/10 that of standard HZ series - critical for audio preamps and precision ADC references |
| Tight zener voltage tolerance | Min/max spread of ±0.2 V at 7.5 V nominal - reduces calibration overhead in production test |
| Low dynamic impedance | 60 Ω max at 0.5 mA - maintains regulation stability with varying load currents up to 1 mA |
| Wide operating temperature range | −55 to +175 °C storage, 175 °C max junction - suitable for automotive under-hood and industrial control environments |
Applications
| High-Precision Voltage Reference | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable excitation voltage to strain gauge bridges and RTD interfaces in data acquisition modules. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed bias point independent of supply rail fluctuations. Use Value: 60 Ω dynamic resistance and −0.04 %/°C TC minimize measurement drift across 0–70 °C operating range. | Use Scenario: Supplying ultra-low-noise bias to photodiode transimpedance amplifiers in optical sensing systems. IC Role / Device Role / Timing Role: Low-noise Zener element replacing higher-noise alternatives in front-end analog signal chains. Use Value: Diode noise reduced to 1/3–1/10 of standard HZ series, directly improving SNR in sub-μV signal detection. |
| Stabilized Power Supply Feedback | Industrial Analog Input Protection |
Use Scenario: Setting precise feedback threshold in isolated DC-DC converter error amplifiers for 5–12 V output rails. IC Role / Device Role / Timing Role: Zener-based voltage divider reference in optocoupler-coupled feedback loop. Use Value: 400 mW power rating and 7.0–7.3 V tolerance ensure consistent regulation despite input ripple and load step changes. | Use Scenario: Clamping transient overvoltage on 4–20 mA current loop inputs in PLC analog modules. IC Role / Device Role / Timing Role: Low-leakage (1 μA max) shunt limiter protecting downstream op-amps from ESD and surge events. Use Value: 1 μA reverse leakage at 2.0 V prevents loading of high-impedance current-sense resistors during normal operation. |
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 |
|---|---|---|---|
| 1N4733A | Zener voltage 5.1 V (fixed), 10 % tolerance, 17 Ω rd, 1 W Pd, DO-41 package | Higher power, looser tolerance, different voltage - requires redesign of series resistor and layout | Select only if 5.1 V reference and higher power handling are required; not a drop-in replacement |
| BZX55C7V5 | Zener voltage 7.5 V, ±5 % tolerance, 70 Ω rd, 500 mW Pd, DO-35 package | Wider voltage tolerance, higher dynamic resistance, same footprint - may degrade reference accuracy in precision circuits | Acceptable where cost sensitivity outweighs low-noise and tight-tolerance requirements |
Compared with 1N4733A and BZX55C7V5, the HZ7.5BPTK-E delivers superior voltage accuracy (±0.2 V vs. ±5 % or fixed 5.1 V), lower noise, and tighter temperature stability - making it optimal for metrology-grade references where drift and noise directly impact system resolution.
Availability
HZ7.5BPTK-E is available at Aetrix Electronics and suitable for precision voltage reference, low-noise sensor biasing, and stabilized power supply feedback applications requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for HZ7.5BPTK-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 is a global semiconductor manufacturer specializing in microcontrollers, analog, and power devices for automotive, industrial, and infrastructure markets.
The HZ-L Series Zener diodes were developed by Renesas specifically for low-noise, high-stability voltage reference applications in precision analog systems - emphasizing reduced diode noise, tight voltage tolerance, and robust thermal performance.
FAQ
What is the exact zener voltage range specified for HZ7.5BPTK-E?
The HZ7.5BPTK-E has a guaranteed zener voltage range of 7.0 V to 7.3 V when tested at IZ = 0.5 mA, per Renesas datasheet REJ03G0182-0300 Rev.3.00. This ±0.2 V tolerance reflects its role as a precision reference device, distinct from general-purpose Zeners with wider spreads. The HZ7.5BPTK-E achieves this tight specification through process-controlled silicon planar junction fabrication.
Is HZ7.5BPTK-E compatible with standard DO-35 footprint layouts?
Yes, the HZ7.5BPTK-E uses the DO-35 axial glass package (JEITA code GRZZ0002ZB-A) with 2.0 mm diameter and 26.0 mm body length, matching industry-standard DO-35 mechanical dimensions. Its navy blue cathode band and orange body allow visual polarity identification, and the 0.13 g mass ensures compatibility with standard wave-solder and hand-solder processes used for HZ7.5BPTK-E assembly.
What is the maximum reverse leakage current for HZ7.5BPTK-E, and at what test condition?
The maximum reverse leakage current for HZ7.5BPTK-E is 1 μA, measured at VR = 2.0 V and Ta = 25 °C. This low leakage supports high-impedance circuit nodes such as op-amp bias networks and sensor excitation paths. The HZ7.5BPTK-E maintains this specification across its full operating temperature range due to optimized junction design.
How does the noise performance of HZ7.5BPTK-E compare to legacy HZ-series Zeners?
The HZ7.5BPTK-E exhibits approximately 1/3 to 1/10 the diode noise level of standard HZ-series Zeners, as confirmed in Renesas' characterization data. This improvement stems from refined planar junction processing and doping uniformity. For designers using HZ7.5BPTK-E in audio or precision measurement circuits, this translates directly to improved signal-to-noise ratio without additional filtering.
Can HZ7.5BPTK-E be used in automotive under-hood applications?
The HZ7.5BPTK-E supports storage temperatures from −55 to +175 °C and a maximum junction temperature of 175 °C, meeting extended temperature requirements for many automotive under-hood locations. However, Renesas explicitly states that HZ-L Series devices are not qualified for safety-critical automotive applications. For non-safety HZ7.5BPTK-E use in engine control sensor interfaces or cabin electronics, thermal derating per Fig.3 must be applied.
HZ7.5BPTK-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:
- -
HZ7.5BPTK-E FAQ
1.How can I place an order for HZ7.5BPTK-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ7.5BPTK-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 HZ7.5BPTK-E reliable?
The price and inventory of HZ7.5BPTK-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ7.5BPTK-E is usually 5 days.
3.What payment methods are accepted for HZ7.5BPTK-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ7.5BPTK-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ7.5BPTK-E?
HZ7.5BPTK-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ7.5BPTK-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 HZ7.5BPTK-E?
For technical support, including HZ7.5BPTK-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ7.5BPTK-E requirements.
6.How does Aetrix verify that HZ7.5BPTK-E is sourced from the original manufacturer or authorized distributors?
All HZ7.5BPTK-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 HZ7.5BPTK-E meets industry standards.
7.What is the process for return or replacement of HZ7.5BPTK-E?
All HZ7.5BPTK-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ7.5BPTK-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 HZ7.5BPTK-E part is unused and in its original packaging.
Return procedure for HZ7.5BPTK-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ7.5BPTK-E Tags
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