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Renesas HZ20BPTK-E
- Part No.:
- HZ20BPTK-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ20BPTK-E.pdf
- Description:
- DIODE ZENER
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Inventory:470,680
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Product details
Overview
HZ20BPTK-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 20.2 V to 21.1 V at 0.5 mA test current, dynamic resistance of 100 Ω max, power dissipation of 400 mW, and junction temperature rating up to 175°C. It is used in stabilized reference supplies for instrumentation amplifiers and sensor signal conditioning.
For engineers reviewing the HZ20BPTK-E datasheet, HZ20BPTK-E pinout, HZ20BPTK-E application, or HZ20BPTK-E equivalent, key selection criteria include zener voltage tolerance (±0.9 V), low noise performance relative to standard HZ series, DO-35 package compatibility, and thermal stability across −55°C to +175°C storage range.
Technical Context
This device operates as a two-terminal voltage reference with DC-tested zener characteristics, designed for low-noise applications where ripple rejection and voltage stability under varying load are critical. Its zener voltage temperature coefficient is approximately −0.04 %/°C near 20 V, supporting stable biasing in temperature-sensitive analog front-ends.
The HZ20BPTK-E exhibits low leakage current (≤1 μA at VR = 15 V) and low zener impedance (100 Ω max at IZ = 0.5 mA), enabling high-accuracy regulation without external filtering. It is not intended for transient suppression or high-current shunt regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.2 V min to 21.1 V max at IZ = 0.5 mA - defines precise DC reference level for calibration-critical circuits |
| Dynamic Resistance (rd) | 100 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under small-signal load changes |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts with limited heatsinking |
| Reverse Leakage (IR) | 1 μA max at VR = 15 V - reduces error contribution in high-impedance reference nodes |
| Junction Temperature (Tj) | 175°C max - enables reliable operation in industrial environments with elevated ambient temperatures |
| Storage Temperature | −55°C to +175°C - compatible with reflow soldering and extended environmental qualification |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body color and navy blue cathode band. Mass: 0.13 g. Dimensions per SC-40 standard: φD = 2.0 mm, E = 4.2 mm, L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Negative terminal of zener junction | Connected to higher-potential node in reverse-biased configuration; marked by navy blue band |
| 2 (Anode) | Positive terminal of zener junction | Connected to circuit ground or lower-potential reference point; unmarked end |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener operation | Noise level ~1/3–1/10 that of standard HZ series - critical for audio preamps and ADC reference buffers |
| Wide zener voltage range support | Part of HZ-L family covering 5.2 V to 38 V - allows single-supplier sourcing across multiple reference voltages |
| Stable temperature coefficient | γZ ≈ −0.04 %/°C near 20 V - minimizes drift-induced error in precision voltage references |
| High reliability packaging | DO-35 glass encapsulation with 175°C junction rating - suitable for long-life industrial and test equipment |
Applications
| Instrumentation Amplifier Reference | Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable bias voltage for rail-to-rail input op-amps in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Two-terminal DC voltage reference establishing common-mode input level. Use Value: Low dynamic resistance (100 Ω) and low noise ensure <10 μV RMS added noise in 10 Hz–10 kHz bandwidth. |
Use Scenario: Biasing bridge sensors (e.g., strain gauges) in industrial pressure transmitters operating from 24 V loop supplies. IC Role / Device Role / Timing Role: Precision shunt reference setting excitation voltage and ADC reference ratio. Use Value: Tight VZ tolerance (±0.9 V) and stable γZ enable <0.1% full-scale accuracy over −40°C to +85°C. |
| Calibration Equipment Supply | Analog Front-End Stabilization |
Use Scenario: Generating traceable 20 V reference in handheld calibrators for process instrument verification. IC Role / Device Role / Timing Role: Primary voltage standard in battery-powered, low-power reference subsystems. Use Value: 400 mW power rating allows operation at 0.5 mA with margin for aging and thermal derating. |
Use Scenario: Regulating local supply for op-amp bias networks in medical ECG analog front-ends. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) shunt regulator isolating sensitive analog sections from digital noise. Use Value: Ultra-low IR prevents loading errors in high-impedance feedback paths and improves CMRR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | Zener voltage 12 V, Pd = 1 W, rd = 9 Ω, DO-41 package | Higher power, lower impedance, but wider VZ tolerance (±5%) and no low-noise specification | Select when higher current capability and tighter rd outweigh noise and tolerance requirements |
| BZX55C20 | Zener voltage 20 V, Pd = 500 mW, rd = 50 Ω, DO-35 package, no published noise data | Same package and nominal voltage, but lacks documented low-noise performance and has looser VZ tolerance (±5%) | Acceptable for non-critical references where cost is prioritized over noise and precision |
Compared with 1N4742A and BZX55C20, the HZ20BPTK-E delivers superior noise performance and tighter voltage tolerance in the same DO-35 footprint, making it preferred for metrology-grade references despite its lower power rating.
Availability
HZ20BPTK-E is available at Aetrix Electronics and suitable for instrumentation amplifier reference, sensor signal conditioning, calibration equipment supply, and analog front-end stabilization requiring stable component supply and long-term parametric consistency.
Supply support for HZ20BPTK-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 power devices, and timing solutions, with headquarters in Tokyo and design centers worldwide.
The HZ-L series is part of Renesas' precision analog portfolio, engineered specifically for low-noise, high-stability voltage reference applications in test & measurement, industrial sensing, and calibration systems.
FAQ
What is the exact zener voltage range specified for HZ20BPTK-E?
The HZ20BPTK-E has a guaranteed zener voltage range of 20.2 V minimum to 21.1 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This 0.9 V total tolerance reflects tight binning for precision reference use, distinct from broader-tolerance variants like HZ20-2L (19.5–20.4 V) or HZ20-3L (20.2–21.1 V).
Is HZ20BPTK-E pin-compatible with other DO-35 Zener diodes?
Yes, the HZ20BPTK-E uses the standard DO-35 package with cathode band marking on lead 1 and anode on lead 2, matching mechanical and electrical pinout of all JEDEC DO-35 Zener diodes including 1N47xx and BZX55 series. No PCB layout change is required for substitution within the same package outline.
Does HZ20BPTK-E meet low-noise requirements for audio applications?
Yes - the HZ20BPTK-E belongs to the HZ-L series, explicitly characterized for low-noise operation with noise levels approximately 1/3 to 1/10 that of the standard HZ series. Its low dynamic resistance (100 Ω max) and low leakage (≤1 μA) make it suitable for high-fidelity audio reference stages and phono preamp bias networks.
What is the maximum allowable reverse current before breakdown in HZ20BPTK-E?
The HZ20BPTK-E does not specify a "maximum reverse current before breakdown" because it is a Zener diode designed to operate in controlled reverse breakdown. Its rated test current is IZ = 0.5 mA, and it maintains regulation up to its 400 mW power limit - corresponding to ~19.8 mA at 20.2 V. Exceeding Pd risks thermal runaway.
Can HZ20BPTK-E be used in surface-mount designs?
No - the HZ20BPTK-E is supplied only in the through-hole DO-35 axial glass package. It is not available in SMD variants such as SOD-123 or SOD-323. For surface-mount equivalents, consider Renesas' HZ20BPTK-E's functional counterparts in the HZ-L series with alternate packaging, which must be verified separately.
HZ20BPTK-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:
- -
HZ20BPTK-E FAQ
1.How can I place an order for HZ20BPTK-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ20BPTK-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 HZ20BPTK-E reliable?
The price and inventory of HZ20BPTK-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ20BPTK-E is usually 5 days.
3.What payment methods are accepted for HZ20BPTK-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ20BPTK-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ20BPTK-E?
HZ20BPTK-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ20BPTK-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 HZ20BPTK-E?
For technical support, including HZ20BPTK-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ20BPTK-E requirements.
6.How does Aetrix verify that HZ20BPTK-E is sourced from the original manufacturer or authorized distributors?
All HZ20BPTK-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 HZ20BPTK-E meets industry standards.
7.What is the process for return or replacement of HZ20BPTK-E?
All HZ20BPTK-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ20BPTK-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 HZ20BPTK-E part is unused and in its original packaging.
Return procedure for HZ20BPTK-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ20BPTK-E Tags
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