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Renesas HZK16LTL-S-E
- Part No.:
- HZK16LTL-S-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZK16LTL-S-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:7,200
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Product details
Overview
HZK16LTL-S-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for voltage regulation and stabilization in low-power supply circuits. It delivers a nominal zener voltage of 16 V (min 15.3 V, max 17.1 V), with dynamic resistance of 45 Ω at 5 mA, maximum power dissipation of 500 mW, and reverse current ≤1 µA at 12 V, commonly used in precision reference and overvoltage protection circuits.
For engineers reviewing the HZK16LTL-S-E datasheet, HZK16LTL-S-E pinout, HZK16LTL-S-E application, or HZK16LTL-S-E equivalent, key selection criteria include its LLD surface-mount package, tight zener voltage tolerance, low temperature coefficient (≈+5.5 mV/°C), and suitability for space-constrained DC biasing and feedback networks in industrial and consumer power supplies.
Technical Context
The HZK16LTL-S-E operates as a two-terminal voltage reference device using controlled avalanche breakdown in a planar silicon junction. Its zener voltage is specified at 5 mA test current with DC excitation, and its dynamic resistance is measured under the same condition to ensure stable regulation under small-signal load variations.
It features a negative-to-positive temperature coefficient transition near 5–6 V; at 16 V, the coefficient is positive (+5.5 mV/°C), making it suitable for temperature-compensated references when paired with complementary devices. The LLD package supports high-density PCB layouts and automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.3 V to 17.1 V at IZ = 5 mA - defines stable regulation range for feedback or reference nodes |
| Dynamic Resistance (rd) | 45 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤1 µA at VR = 12 V - ensures minimal leakage in standby or high-impedance bias networks |
| Power Dissipation (Pd) | 500 mW max at Ta = 25°C - sets thermal derating limit for continuous operation on standard FR-4 PCB |
| Junction Temperature (Tj) | –55°C to +175°C - enables use in extended-temperature industrial environments without external heatsinking |
| Zener Voltage Tempco | +5.5 mV/°C (typ.) - allows predictable drift compensation in temperature-stable designs |
Pinout & Package
The HZK16LTL-S-E is housed in an LLD (Leadless Low-profile Diode) surface-mount package - a 2-pin, cathode-banded, rectangular plastic case measuring approximately 1.4 mm × 3.5 mm × 1.35 mm, optimized for high-density assembly and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal during reverse bias | Connected to regulated output node; polarity marking (band) must align with PCB silkscreen |
| 2 (Anode) | Low-side terminal during reverse bias | Typically tied to ground or common reference; forms return path for zener current |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 45 Ω max ensures <1% output variation under ±1 mA load step in reference applications |
| Wide zener voltage range coverage | Part of HZK Series spanning 1.9–38 V - enables standardized BOM across multiple supply rails |
| LLD surface-mount package | 0.027 g mass and 1.4 mm width support miniaturized power management on compact PCBs |
| Stable DC zener characteristics | Tested with DC only - eliminates AC-related parameter ambiguity for precision DC biasing |
Applications
| DC Power Supply Reference | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Providing stable 16 V reference for op-amp comparators or ADC voltage dividers in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Zener diode acting as passive voltage reference source with fixed breakdown threshold. Use Value: Enables accurate 16 V threshold detection without active regulation, reducing component count and quiescent current. |
Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events exceeding 16 V in automotive body control modules. IC Role / Device Role / Timing Role: Clamping element shunting excess energy to ground when input exceeds 17.1 V. Use Value: Limits voltage excursion to safe levels with fast response (<10 ns), preventing latch-up or ESD damage. |
| Feedback Network in SMPS | Temperature-Compensated Bias Generator |
Use Scenario: Setting output voltage in isolated flyback converters via optocoupler feedback loop with TL431 secondary-side controller. IC Role / Device Role / Timing Role: Precision zener providing stable reference for error amplifier biasing and loop stability. Use Value: Maintains ±3% output regulation across line/load/temperature with minimal drift in closed-loop control. |
Use Scenario: Generating a temperature-stable bias current for analog front-end amplifiers in medical instrumentation. IC Role / Device Role / Timing Role: Zener diode combined with NTC thermistor to offset positive tempco and achieve <±50 ppm/°C net drift. Use Value: Delivers predictable 16 V reference point with compensated thermal behavior for high-accuracy analog signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16 (ON Semiconductor) | Same 16 V nominal rating, SOT-23 package, 400 mW Pd, rd = 40 Ω - slightly lower power and smaller footprint | Preferred for ultra-compact designs where board area is constrained; less thermal margin than LLD | Select when PCB real estate is critical and thermal load remains below 300 mW average |
| 1N4744A (ON Semiconductor) | Dual-in-line DO-41 through-hole package, 1 W Pd, rd = 16 Ω - higher power, larger size, different mounting | Suitable for prototyping, high-reliability legacy systems, or manual assembly where reflow is unavailable | Choose for hand-soldered evaluation boards or applications requiring >500 mW continuous dissipation |
Compared with BZX84-C16 and 1N4744A, the HZK16LTL-S-E offers a balanced trade-off: LLD package density between SOT-23 and DO-41, 500 mW rating supporting moderate power needs, and Renesas' process-controlled zener voltage distribution ideal for production consistency in industrial-grade assemblies.
Availability
HZK16LTL-S-E is available at Aetrix Electronics and suitable for industrial sensor interfaces, consumer power adapters, and embedded microcontroller protection circuits requiring stable component supply and long-term manufacturability.
Supply support for HZK16LTL-S-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 Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.
The HZK Series was developed by Renesas (formerly NEC Electronics) specifically for precision DC voltage stabilization in cost-sensitive, high-volume power supply and protection applications - emphasizing tight VZ tolerance, low leakage, and robust surface-mount reliability.
FAQ
What is the exact zener voltage range for HZK16LTL-S-E at 5 mA?
The HZK16LTL-S-E has a guaranteed zener voltage range of 15.3 V to 17.1 V when tested at IZ = 5 mA and Ta = 25°C. This specification is confirmed in the Renesas HZK Series datasheet Rev.3.00, page 3, and applies directly to the HZK16LTL-S-E variant within the HZK16 family.
Is HZK16LTL-S-E RoHS compliant?
Yes, the HZK16LTL-S-E meets EU RoHS Directive requirements. Renesas Electronics confirms environmental compliance for the HZK Series in accordance with applicable regulations, including restriction of lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE. Full material declarations are available upon request from Aetrix Electronics.
What is the thermal derating behavior of HZK16LTL-S-E above 25°C ambient?
The HZK16LTL-S-E exhibits linear thermal derating: power dissipation decreases from 500 mW at 25°C to zero at 150°C ambient, per the "Power Dissipation vs. Ambient Temperature" curve on page 5 of the Renesas datasheet. Derating slope is –6.25 mW/°C, based on standard FR-4 PCB mounting (15 × 20 × 1.6 mm).
Does HZK16LTL-S-E have a specified zener voltage temperature coefficient?
Yes - the HZK16LTL-S-E has a positive temperature coefficient of approximately +5.5 mV/°C, as shown in Figure 2 ("Temperature Coefficient vs. Zener Voltage") on page 5 of the Renesas datasheet. This value is typical for 16 V-class zeners in the HZK Series and is used for thermal drift modeling in precision reference designs.
Can HZK16LTL-S-E be used in place of a 1N4744A in existing designs?
No - HZK16LTL-S-E is not a drop-in replacement for 1N4744A due to differences in package (LLD vs. DO-41), thermal performance (500 mW vs. 1 W), and pinout (surface-mount dual-pad vs. axial leads). While both regulate near 16 V, mechanical and thermal redesign is required to substitute HZK16LTL-S-E into a 1N4744A layout.
HZK16LTL-S-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:
- -
HZK16LTL-S-E FAQ
1.How can I place an order for HZK16LTL-S-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZK16LTL-S-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 HZK16LTL-S-E reliable?
The price and inventory of HZK16LTL-S-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZK16LTL-S-E is usually 5 days.
3.What payment methods are accepted for HZK16LTL-S-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZK16LTL-S-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZK16LTL-S-E?
HZK16LTL-S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZK16LTL-S-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 HZK16LTL-S-E?
For technical support, including HZK16LTL-S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZK16LTL-S-E requirements.
6.How does Aetrix verify that HZK16LTL-S-E is sourced from the original manufacturer or authorized distributors?
All HZK16LTL-S-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 HZK16LTL-S-E meets industry standards.
7.What is the process for return or replacement of HZK16LTL-S-E?
All HZK16LTL-S-E units undergo pre-shipment inspection (PSI). If there is an issue with HZK16LTL-S-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 HZK16LTL-S-E part is unused and in its original packaging.
Return procedure for HZK16LTL-S-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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