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Renesas HZ4.7BPTK-E
- Part No.:
- HZ4.7BPTK-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ4.7BPTK-E.pdf
- Description:
- DIODE ZENER
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Product details
Overview
HZ4.7BPTK-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 4.7 V, 400 mW power dissipation, <1 μA reverse leakage at 1 V, 80 Ω dynamic impedance at 5 mA, and DO-35 glass package with orange body and navy-blue cathode band - used in reference voltage generation for ADCs and sensor signal conditioning.
For engineers reviewing the HZ4.7BPTK-E datasheet, HZ4.7BPTK-E pinout, HZ4.7BPTK-E application, or HZ4.7BPTK-E equivalent, key selection criteria include zener voltage tolerance (±5%), temperature coefficient (−0.05 %/°C), noise performance (1/3–1/10 lower than standard HZ series), and thermal derating above 25°C ambient.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage across variable load currents via controlled reverse-bias breakdown. Its low-noise design targets applications where voltage reference integrity directly impacts measurement accuracy.
The HZ4.7BPTK-E uses a silicon planar junction structure with optimized doping profile to minimize avalanche-induced noise and achieve consistent zener characteristics at IZ = 5 mA. It exhibits negative temperature coefficient behavior typical of low-voltage Zeners (<5.6 V), confirmed by γZ = −0.05 %/°C at 4.7 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.7 V nominal, ±5% tolerance - defines precise DC reference level for feedback loops and analog comparators. |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous power handling before thermal shutdown or parameter drift. |
| Dynamic Impedance (rd) | 80 Ω at IZ = 5 mA - determines output voltage stability under varying load current; lower rd improves regulation. |
| Reverse Leakage (IR) | <1 μA at VR = 1 V - minimizes error current in high-impedance bias networks and reference dividers. |
| Temperature Coefficient (γZ) | −0.05 %/°C - quantifies voltage drift with ambient temperature; enables compensation in precision references. |
| Junction Temperature (Tj) | 175°C maximum - defines upper thermal limit for reliable operation in enclosed or high-power-density designs. |
Pinout & Package
Package: DO-35 glass axial lead 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) | Breakdown voltage terminal | Connected to regulated output node; reverse-biased during normal operation to maintain VZ. |
| 2 (Anode) | Reference ground terminal | Typically tied to circuit common; establishes return path for zener current and defines reference potential. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ≈ 1/3–1/10 that of standard HZ series - critical for high-resolution data acquisition systems. |
| Stable low-voltage reference | VZ = 4.7 V with tight ±5% tolerance and −0.05 %/°C TC - supports accurate calibration without external trimming. |
| High reliability in harsh environments | Operating junction temperature up to 175°C and storage range −55°C to +175°C - suitable for industrial control and automotive under-hood modules. |
| Low-leakage performance | IR < 1 μA at 1 V - preserves accuracy in micropower sensor interfaces and battery-operated instrumentation. |
Applications
| ADC Reference Voltage Source | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable 4.7 V reference for 16-bit SAR ADCs in portable test equipment. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise full-scale input range for analog-to-digital conversion. Use Value: Enables ≤0.5 LSB integral nonlinearity by minimizing reference drift and noise coupling into ADC input stage. | Use Scenario: Biasing bridge-based pressure sensors in medical infusion pumps. IC Role / Device Role / Timing Role: Low-drift, low-noise excitation source for Wheatstone bridge arms. Use Value: Reduces output offset drift to <10 μV/°C, meeting ISO 60601-1 accuracy requirements for therapeutic devices. |
| Industrial Current Loop Transmitter | Programmable Logic Controller Input Conditioning |
Use Scenario: Generating 4.7 V reference for 4–20 mA loop-powered transmitter ICs in factory automation. IC Role / Device Role / Timing Role: Precision voltage setpoint for current-sense amplifier feedback network. Use Value: Maintains loop accuracy within ±0.1% over −40°C to +85°C due to predictable TC and low rd. | Use Scenario: Stabilizing input threshold voltage for optocoupler-isolated digital inputs in PLC backplanes. IC Role / Device Role / Timing Role: Clamp/reference diode defining logic-high detection level for 24 VDC field signals. Use Value: Prevents false triggering from supply ripple or EMI by holding threshold within ±20 mV over 10-year lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4732A | 4.7 V nominal, ±5%, 1 W Pd, 80 Ω rd, DO-41 package, higher noise than HZ-L series | Higher power rating but no low-noise optimization - suitable for general-purpose regulation, not precision analog | Select when board space allows larger DO-41 and noise floor is non-critical |
| BZX55-C4V7 | 4.7 V nominal, ±5%, 500 mW Pd, 90 Ω rd, DO-35 package, unspecified noise performance | Same package footprint but lacks documented low-noise specification - requires validation for sensitive references | Select only after verifying noise spectral density meets system SNR target |
Compared with 1N4732A and BZX55-C4V7, the HZ4.7BPTK-E delivers superior noise suppression and tighter thermal stability in the same DO-35 form factor, making it the preferred choice for metrology-grade references where voltage integrity directly limits measurement resolution.
Availability
HZ4.7BPTK-E is available at Aetrix Electronics and suitable for precision analog instrumentation, industrial sensor interfaces, and medical device reference circuits requiring stable component supply with guaranteed long-term continuity.
Supply support for HZ4.7BPTK-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 leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT applications, with emphasis on functional safety and reliability.
The HZ-L Series is part of Renesas' precision analog portfolio, engineered specifically for low-noise voltage reference applications in high-accuracy measurement and sensor signal conditioning systems.
FAQ
What is the exact zener voltage tolerance for HZ4.7BPTK-E?
The HZ4.7BPTK-E has a nominal zener voltage of 4.7 V with a guaranteed tolerance of ±5% at IZ = 5 mA and Ta = 25°C. This means the actual measured VZ falls between 4.465 V and 4.935 V under specified test conditions, ensuring predictable reference accuracy in production designs.
Does HZ4.7BPTK-E meet low-noise requirements for audio-grade applications?
Yes, the HZ4.7BPTK-E is explicitly characterized for low-noise operation - its noise level is approximately 1/3 to 1/10 that of the legacy HZ series. While not marketed for audio signal paths, its low-noise Zener behavior makes it suitable for ultra-low-drift biasing of microphone preamplifiers and high-fidelity ADC references where supply ripple rejection is critical.
Can HZ4.7BPTK-E be used in place of standard 4.7 V Zener diodes like 1N4732A?
The HZ4.7BPTK-E shares the same DO-35 package and nominal 4.7 V rating as 1N4732A, but it is not a drop-in replacement due to differences in thermal characteristics and noise performance. Its lower power rating (400 mW vs. 1 W) and optimized low-noise junction require careful review of current draw and PCB thermal layout before substitution in existing designs.
What is the maximum allowable ambient temperature for continuous operation of HZ4.7BPTK-E?
The HZ4.7BPTK-E supports continuous operation up to an ambient temperature of +85°C when derated per the published power dissipation curve (Fig.3). At this temperature, its usable power drops to approximately 280 mW. Full 400 mW operation is limited to Ta ≤ 25°C, and junction temperature must remain ≤175°C under all conditions.
Is HZ4.7BPTK-E RoHS compliant and halogen-free?
Yes, the HZ4.7BPTK-E conforms to RoHS Directive 2011/65/EU and is halogen-free per JESD209-4 standards. Renesas documents material content compliance in its official product change notifications and environmental reports, and the device carries the appropriate marking per JEDEC standards for lead-free assembly compatibility.
HZ4.7BPTK-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:
- -
HZ4.7BPTK-E FAQ
1.How can I place an order for HZ4.7BPTK-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ4.7BPTK-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 HZ4.7BPTK-E reliable?
The price and inventory of HZ4.7BPTK-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ4.7BPTK-E is usually 5 days.
3.What payment methods are accepted for HZ4.7BPTK-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ4.7BPTK-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ4.7BPTK-E?
HZ4.7BPTK-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ4.7BPTK-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 HZ4.7BPTK-E?
For technical support, including HZ4.7BPTK-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ4.7BPTK-E requirements.
6.How does Aetrix verify that HZ4.7BPTK-E is sourced from the original manufacturer or authorized distributors?
All HZ4.7BPTK-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 HZ4.7BPTK-E meets industry standards.
7.What is the process for return or replacement of HZ4.7BPTK-E?
All HZ4.7BPTK-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ4.7BPTK-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 HZ4.7BPTK-E part is unused and in its original packaging.
Return procedure for HZ4.7BPTK-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ4.7BPTK-E Tags
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