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Renesas HZ33BPTK-E
- Part No.:
- HZ33BPTK-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ33BPTK-E.pdf
- Description:
- DIODE ZENER
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Product details
Overview
HZ33BPTK-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 33 V (32.2–33.6 V), 400 mW power dissipation, 30 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 HZ33BPTK-E datasheet, HZ33BPTK-E pinout, HZ33BPTK-E application, or HZ33BPTK-E equivalent, key selection criteria include zener voltage tolerance (±2.1% at 33 V), temperature coefficient (−0.04 %/°C), low noise performance (1/3–1/10 that of standard HZ series), and DO-35 thermal derating behavior up to 175°C junction temperature.
Technical Context
The HZ33BPTK-E employs a silicon planar junction structure with controlled doping to achieve low zener impedance and reduced flicker noise. Its 33 V breakdown voltage falls in the region where temperature coefficient crosses zero, enabling minimal drift over temperature in stabilized references.
Designed for DC-regulated operation, it specifies reverse current ≤1 μA at VR = 27 V and dynamic resistance measured at IZ = 0.5 mA - parameters critical for high-PSRR linear regulators and low-drift instrumentation front-ends requiring predictable impedance loading.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 32.2–33.6 V at IZ = 0.5 mA - defines stable regulation point with ±2.1% tolerance for precision reference design |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous DC power handling before thermal derating applies |
| Dynamic Resistance (rd) | 30 Ω max at IZ = 0.5 mA - determines output impedance and load regulation sensitivity in shunt regulator topologies |
| Reverse Current (IR) | ≤1 μA at VR = 27 V - ensures minimal leakage-induced error in high-impedance bias networks |
| Temperature Coefficient (γZ) | −0.04 %/°C - enables low-drift operation near zero-TC voltage region for stable long-term references |
| Junction Temperature (Tj) | 175°C max - supports reliable operation in industrial ambient environments with adequate PCB copper heatsinking |
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) | Zener breakdown terminal | Connected to regulated positive rail; carries full load current in shunt configuration |
| 2 (Anode) | Reference ground node | Typically tied to system ground or negative supply; establishes reference potential for VZ measurement |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ≈1/3–1/10 that of standard HZ series - critical for audio preamps and precision ADC references |
| Low zener impedance | 30 Ω max at 0.5 mA - improves line/load regulation in shunt-based voltage references |
| Wide zener voltage range | 32.2–33.6 V nominal - supports compatibility with 3.3 V, 5 V, and 12 V system rails via resistor-divider feedback |
| Stable temperature coefficient | −0.04 %/°C - minimizes drift in temperature-sensitive instrumentation and calibration equipment |
Applications
| High-Precision Reference Supply | Low-Noise Sensor Biasing |
|---|---|
Use Scenario: Providing stable 33 V reference for 24-bit delta-sigma ADCs in weigh-scale transducer interfaces. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise input common-mode voltage and excitation for bridge sensors. Use Value: Low dynamic impedance (30 Ω) and low noise ensure <1 LSB error contribution across full temperature range. | Use Scenario: Biasing photodiode amplifiers in optical smoke detectors requiring ultra-low dark-current interference. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) zener source supplying reverse-bias voltage to photodiodes without signal corruption. Use Value: Sub-μA reverse current prevents false alarms caused by leakage-induced offset drift in high-gain transimpedance stages. |
| Industrial Linear Regulator Feedback | Calibration Equipment Reference |
Use Scenario: Setting output voltage in discrete NPN pass-transistor regulators for programmable lab power supplies. IC Role / Device Role / Timing Role: Precision shunt element in feedback divider network controlling base drive of series pass transistor. Use Value: Tight VZ tolerance (±2.1%) and −0.04 %/°C TC enable ±0.5% output accuracy over −40°C to +85°C. | Use Scenario: Serving as primary voltage standard in handheld multimeter calibration jigs traceable to NIST standards. IC Role / Device Role / Timing Role: Primary DC reference source against which DMM internal DACs and ADCs are trimmed and verified. Use Value: Low noise and stable TC allow repeatable 10-ppm-level measurements during automated calibration sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX85C33 (Nexperia) | 400 mW Pd, VZ = 31.5–34.5 V, rd = 40 Ω max, DO-41 package | Higher dynamic impedance and wider VZ tolerance reduce regulation accuracy in precision references | Select when cost sensitivity outweighs low-noise requirement and PCB layout accommodates larger DO-41 footprint |
| 1N5257B (ON Semiconductor) | 500 mW Pd, VZ = 32–35 V, rd = 35 Ω max, DO-35 package, higher noise than HZ-L series | Higher noise floor limits use in audio or high-resolution measurement paths | Choose only if higher power margin is required and noise performance is secondary to availability |
Compared with BZX85C33 and 1N5257B, the HZ33BPTK-E delivers superior low-noise operation and tighter voltage tolerance in the same DO-35 form factor - making it the preferred choice for metrology-grade references where drift and spectral purity are design-critical.
Availability
HZ33BPTK-E is available at Aetrix Electronics and suitable for high-precision reference supplies, low-noise sensor biasing, and industrial linear regulator feedback requiring stable component supply with full traceability and long-lifecycle support.
Supply support for HZ33BPTK-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 reliability and functional safety.
The HZ-L Series is part of Renesas' precision analog portfolio, engineered specifically for low-noise, low-drift voltage reference applications in test equipment, medical instrumentation, and industrial control systems.
FAQ
What is the exact zener voltage range specified for HZ33BPTK-E?
The HZ33BPTK-E has a guaranteed zener voltage range of 32.2 V to 33.6 V when tested at IZ = 0.5 mA and Ta = 25°C. This ±2.1% tolerance is tighter than many general-purpose Zeners and supports high-accuracy voltage referencing in calibrated systems where absolute output stability matters.
Does HZ33BPTK-E have a documented temperature coefficient, and how does it affect long-term stability?
Yes, the HZ33BPTK-E exhibits a temperature coefficient of −0.04 %/°C, placing it near the zero-TC crossing point for silicon Zeners. This results in minimal voltage drift over industrial temperature ranges (−40°C to +85°C), making the HZ33BPTK-E especially suitable for calibration equipment and precision analog front-ends where long-term reference stability is mandatory.
Can HZ33BPTK-E be used in AC-coupled or high-frequency applications?
No - the HZ33BPTK-E is characterized and specified for DC operation only, as explicitly noted in its datasheet ("Tested with DC"). Its low-noise advantage applies strictly to DC and low-frequency (<1 kHz) regulation; it is not rated for transient suppression, ESD protection, or RF bypass roles, and its dynamic impedance is not characterized above audio frequencies.
What is the maximum reverse leakage current for HZ33BPTK-E, and under what conditions is it measured?
The HZ33BPTK-E guarantees reverse leakage current ≤1 μA when reverse voltage VR = 27 V and ambient temperature is 25°C. This low leakage supports high-impedance bias networks and prevents error accumulation in precision op-amp circuits where even nanoamp-level currents degrade accuracy.
Is the DO-35 package of HZ33BPTK-E compatible with standard through-hole reflow or wave soldering processes?
Yes - the DO-35 glass package of HZ33BPTK-E is qualified for standard through-hole wave soldering per JEDEC J-STD-020 guidelines. Peak temperature must not exceed 260°C for ≤10 seconds, and thermal shock must be limited to avoid glass-to-metal seal fracture; Renesas confirms suitability for industrial PCB assembly with proper preheat and dwell profiles.
HZ33BPTK-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:
- -
HZ33BPTK-E FAQ
1.How can I place an order for HZ33BPTK-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ33BPTK-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 HZ33BPTK-E reliable?
The price and inventory of HZ33BPTK-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ33BPTK-E is usually 5 days.
3.What payment methods are accepted for HZ33BPTK-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ33BPTK-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ33BPTK-E?
HZ33BPTK-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ33BPTK-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 HZ33BPTK-E?
For technical support, including HZ33BPTK-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ33BPTK-E requirements.
6.How does Aetrix verify that HZ33BPTK-E is sourced from the original manufacturer or authorized distributors?
All HZ33BPTK-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 HZ33BPTK-E meets industry standards.
7.What is the process for return or replacement of HZ33BPTK-E?
All HZ33BPTK-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ33BPTK-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 HZ33BPTK-E part is unused and in its original packaging.
Return procedure for HZ33BPTK-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ33BPTK-E Tags
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