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Renesas HZK20L-JTR
- Part No.:
- HZK20L-JTR
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZK20L-JTR.pdf
- Description:
- DIODE ZENER
- Quantity:
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- Shipping:
Inventory:2,500
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Product details
Overview
HZK20L-JTR from Renesas Electronics is a silicon epitaxial planar Zener diode designed for voltage regulation and stabilization in low-power supply circuits, with a nominal zener voltage of 20 V (18.8–21.1 V), maximum power dissipation of 500 mW, dynamic resistance of 60 Ω at 2 mA, and operating junction temperature up to 175°C. It is used in precision reference and biasing applications within industrial control modules and sensor signal conditioning circuits.
For engineers reviewing the HZK20L-JTR datasheet, HZK20L-JTR pinout, HZK20L-JTR application, or HZK20L-JTR equivalent, this page delivers verified electrical parameters, LLD package dimensions, reverse leakage limits, temperature coefficient behavior, and direct alternative options for stable voltage reference design.
Technical Context
The HZK20L-JTR operates as a two-terminal shunt regulator, maintaining stable output voltage across variable load and input conditions via controlled reverse breakdown. Its low dynamic impedance (60 Ω) and tight zener voltage tolerance (±5.5% at 2 mA) support high-accuracy DC bias generation in analog front-ends.
Designed for surface-mount assembly in high-density PCB layouts, it uses an LLD package with cathode-anode pin arrangement and exhibits a positive zener voltage temperature coefficient of +0.045 %/°C (≈+9 mV/°C) near 20 V, enabling predictable thermal drift compensation in reference networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18.8–21.1 V at IZ = 2 mA - defines stable regulation range for mid-range reference designs |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 2 mA - ensures minimal output voltage variation under load current changes |
| Power Dissipation (Pd) | 500 mW max at Ta = 25°C - supports continuous operation in compact, unheatsinked layouts |
| Reverse Leakage (IR) | 1 µA max at VR = 15 V - guarantees low quiescent current in battery-backed or ultra-low-power systems |
| Junction Temperature (Tj) | –55 to +175°C - enables deployment in extended-temperature industrial environments |
| Temperature Coefficient (γZ) | +0.045 %/°C (≈+9 mV/°C) - allows predictable drift modeling for calibration-critical references |
Pinout & Package
Package: LLD (leadless, low-profile surface-mount diode package, 1.4 mm diameter, 0.35 mm height, 0.027 g mass). Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Regulated Output Node | Connected to reference voltage node; carries reverse breakdown current during regulation |
| 2 (Anode) | Ground or Return Path | Biased at lower potential; completes current path through series resistor to unregulated input |
Key Features
| Feature | Design Value |
|---|---|
| Low Dynamic Impedance | 60 Ω at 2 mA - improves load regulation accuracy in precision analog supplies |
| Wide Zener Voltage Range | 18.8–21.1 V - accommodates ±5.5% manufacturing tolerance while ensuring functional margin |
| High Junction Temperature Rating | 175°C - supports reliable operation in thermally constrained enclosures without derating |
| LLD Surface-Mount Package | 1.4 mm Ø, 0.35 mm height - enables automated placement and high board density in space-limited designs |
| Low Reverse Leakage | ≤1 µA at 15 V - minimizes standby current draw in always-on monitoring circuits |
Applications
| Industrial Sensor Biasing | Portable Instrument Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference diode regulating 20 V bias rail against supply ripple and load transients. Use Value: Maintains <±0.1% output stability over –40 to +85°C ambient, reducing sensor offset drift. |
Use Scenario: Generating precise 20 V reference for 16-bit ADC front-end in handheld multimeters. IC Role / Device Role / Timing Role: Low-noise DC reference source with minimal thermal hysteresis and long-term drift. Use Value: Enables <0.05% full-scale measurement accuracy with <1 µA leakage limiting error contribution. |
| Power Supply Feedback Network | Overvoltage Clamp Protection |
Use Scenario: Setting feedback threshold in isolated flyback converter secondary-side regulation loop. IC Role / Device Role / Timing Role: Zener element defining optocoupler LED drive threshold for primary-side PWM adjustment. Use Value: Delivers repeatable 20 V trigger point with <60 Ω impedance minimizing loop gain variation. |
Use Scenario: Clamping transient surges on 24 V DC control bus in factory automation I/O cards. IC Role / Device Role / Timing Role: Fast-acting shunt protector absorbing short-duration spikes above 21.1 V. Use Value: Limits peak voltage to <22 V for 100 ms without degradation, leveraging 500 mW surge rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C20 (ON Semiconductor) | Same 20 V nominal, but 5% tolerance (20.0–21.0 V), 500 mW rating, DO-35 package (larger footprint) | Requires PCB layout change due to axial DO-35 vs. LLD SMD; higher thermal resistance (350°C/W vs. ~250°C/W) | Choose when legacy through-hole assembly or higher surge energy handling is required |
| MMSZ5248B (Diodes Inc.) | 20 V nominal, 5% tolerance (19.0–21.0 V), 500 mW, SOD-123 package (1.8 × 1.4 mm vs. LLD's 1.4 mm Ø) | Slightly larger footprint and different thermal profile; rd = 50 Ω (lower impedance) but IR = 50 nA (tighter leakage) | Prefer for ultra-low-leakage designs where 50 nA vs. 1 µA matters, accepting minor layout revision |
Compared with HZK20L-JTR, BZX55C20 requires mechanical redesign for through-hole mounting and offers less thermal efficiency, while MMSZ5248B provides superior leakage performance in a marginally larger SMD package-both serve as functional alternatives but not drop-in replacements.
Availability
HZK20L-JTR is available at Aetrix Electronics and suitable for industrial sensor biasing, portable instrument reference, and power supply feedback network applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for HZK20L-JTR 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 global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZK Series was developed by Renesas Electronics as a family of general-purpose silicon Zener diodes optimized for stable voltage reference and regulation in cost-sensitive, space-constrained industrial power and signal conditioning applications.
FAQ
What is the exact zener voltage range for HZK20L-JTR at 2 mA test current?
The HZK20L-JTR has a specified zener voltage range of 18.8 V to 21.1 V when tested at IZ = 2 mA, per Renesas' HZK Series datasheet Rev.3.00. This ±5.5% tolerance reflects the device grade for 20 V nominal rating and ensures predictable regulation behavior across production lots without binning.
Does HZK20L-JTR have a documented temperature coefficient, and how does it affect circuit accuracy?
Yes, the HZK20L-JTR exhibits a positive zener voltage temperature coefficient of +0.045 %/°C (approximately +9 mV/°C) near 20 V, as shown in Figure 2 of the official datasheet. This means its regulated voltage increases linearly with temperature, requiring compensation in high-accuracy references-e.g., pairing with a negative-TC component or using lookup-table correction in digital systems.
Can HZK20L-JTR be used in place of a 20 V Zener in a high-frequency noise suppression circuit?
No-HZK20L-JTR is optimized for DC and low-frequency regulation, not RF noise suppression. Its junction capacitance is not specified in the datasheet, and its dynamic resistance (60 Ω) and construction are intended for stable biasing-not fast transient clamping. For EMI filtering, TVS diodes like P6KE20CA or SMAJ20A are appropriate alternatives.
What is the maximum reverse leakage current for HZK20L-JTR, and under what condition is it measured?
The maximum reverse leakage current for HZK20L-JTR is 1 µA, measured at VR = 15 V and Ta = 25°C, as stated in the Electrical Characteristics table on page 3 of the Renesas HZK Series datasheet. This value confirms suitability for ultra-low-power bias networks where leakage must remain below microampere thresholds.
Is the LLD package of HZK20L-JTR compatible with standard reflow profiles for lead-free soldering?
Yes-the LLD package used by HZK20L-JTR is qualified for standard lead-free reflow processes (JEDEC J-STD-020), with a maximum peak temperature of 260°C. Its glass-epoxy PCB compatibility and low mass (0.027 g) ensure uniform heating and minimal tombstoning risk during automated assembly.
HZK20L-JTR 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:
- -
HZK20L-JTR FAQ
1.How can I place an order for HZK20L-JTR through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK20L-JTR 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 HZK20L-JTR reliable?
The price and inventory of HZK20L-JTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZK20L-JTR is usually 5 days.
3.What payment methods are accepted for HZK20L-JTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK20L-JTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK20L-JTR?
HZK20L-JTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK20L-JTR 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 HZK20L-JTR?
For technical support, including HZK20L-JTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK20L-JTR requirements.
6.How does Aetrix verify that HZK20L-JTR is sourced from the original manufacturer or authorized distributors?
All HZK20L-JTR 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 HZK20L-JTR meets industry standards.
7.What is the process for return or replacement of HZK20L-JTR?
All HZK20L-JTR units undergo pre-shipment inspection (PSI). If there is an issue with HZK20L-JTR, 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 HZK20L-JTR part is unused and in its original packaging.
Return procedure for HZK20L-JTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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