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Renesas HZS15-2TD-E
- Part No.:
- HZS15-2TD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS15-2TD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:545,000
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Product details
Overview
HZS15-2TD-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power stabilized DC power supplies, with a nominal zener voltage of 15.0 V (min 14.9 V, max 15.5 V), 400 mW maximum power dissipation, 11.0 Ω dynamic resistance at 5 mA test current, and −55 to +175 °C storage temperature range. It serves as a shunt voltage reference in feedback loops of linear regulators and overvoltage protection circuits.
For engineers reviewing the HZS15-2TD-E datasheet, HZS15-2TD-E pinout, HZS15-2TD-E application, or HZS15-2TD-E equivalent, this device is selected for stable low-current voltage clamping, thermal-stable biasing in analog front-ends, and cost-sensitive industrial sensor supply rails where ±3% zener tolerance and 0.05%/°C temperature coefficient are acceptable.
Technical Context
The HZS15-2TD-E operates as a two-terminal shunt regulator, conducting reverse current above its breakdown threshold to maintain a stable cathode-to-anode voltage. Its planar silicon construction ensures reproducible zener characteristics and low leakage (<1 µA at VR = 12 V).
It is rated for 400 mW power dissipation at 25 °C ambient, derating linearly to zero at 175 °C junction temperature, and features a zener voltage temperature coefficient of approximately +0.05 %/°C - typical for 15 V-class devices - enabling predictable drift behavior in temperature-varying environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.9 V min / 15.5 V max at IZ = 5 mA - defines usable regulation window for 15 V nominal reference designs. |
| Dynamic Resistance (rd) | 11.0 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity in shunt configurations. |
| Power Dissipation (Pd) | 400 mW at Ta = 25 °C - sets maximum continuous power handling before thermal shutdown or degradation. |
| Reverse Leakage (IR) | 1 µA max at VR = 12 V - ensures minimal quiescent current draw in standby or high-impedance bias networks. |
| Junction Temperature (Tj) | 200 °C max - supports operation in high-ambient industrial enclosures when properly heatsinked or spaced. |
| Storage Temperature | −55 to +175 °C - enables use in automotive under-hood or outdoor telecom equipment without cold/hot storage restrictions. |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), epoxy-molded axial lead package with 5 mm pitch, 2.0 mm diameter body, 26 mm lead length, and lake-blue cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference node | Connected to regulated output rail; reverse-biased terminal where stable voltage is measured relative to anode. |
| 2 (Anode) | Low-side return path | Typically tied to ground or common reference; completes current path during zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 11.0 Ω max enables tight voltage regulation under varying load currents up to 20 mA. |
| Wide operating temperature range | −55 to +175 °C storage and 200 °C junction rating support deployment in harsh industrial and transportation environments. |
| Standardized 5 mm pitch leads | Enables compatibility with high-speed automatic insertion equipment in volume PCB assembly lines. |
| Precision zener voltage grading | "-2" suffix denotes B2 grade (14.9–15.5 V), offering tighter tolerance than generic 15 V diodes for improved system accuracy. |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reset Circuit |
|---|---|
Use Scenario: Providing stable 15 V bias to op-amps and ADC drivers in factory-floor pressure/temperature transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise analog signal chain headroom and common-mode level. Use Value: Maintains <±0.5% output stability across −40 to +85 °C ambient, reducing calibration drift in unattended field deployments. |
Use Scenario: Generating clean reset threshold for 3.3 V or 5 V microcontrollers powered from unregulated 12–24 V DC rails. IC Role / Device Role / Timing Role: Zener-clamped resistor-divider defining brown-out detection voltage for POR/BOR circuits. Use Value: Delivers repeatable 15 V clamp with <1 µA leakage, minimizing divider current error and enabling ultra-low-power sleep modes. |
| DC-DC Converter Feedback Reference | Overvoltage Protection Clamp |
Use Scenario: Replacing TL431-based references in isolated flyback converters where simplicity and cost outweigh programmability needs. IC Role / Device Role / Timing Role: Fixed-voltage reference in optocoupler feedback loop to regulate secondary-side output. Use Value: Eliminates external bias network and startup delay; 11 Ω rd ensures <1% load regulation error at 5–15 mA feedback current. |
Use Scenario: Protecting downstream 12 V logic ICs from transient surges on shared 15 V supply buses in PLC backplanes. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated during >15.5 V excursions to divert excess current. Use Value: Responds within nanoseconds to overvoltage events; 400 mW rating sustains 200 ms surge at 25 mA without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A (ON Semiconductor) | 14 V nominal (13.3–14.7 V), 1 W rating, DO-41 package, higher power but looser tolerance (±5%). | Better suited for higher-current clamping; less precise for reference use due to wider VZ spread and +0.075 %/°C TC. | Select when >400 mW surge handling is required and 14 V regulation suffices. |
| BZX55-C15 (Vishay) | 15 V nominal (14.3–15.7 V), 500 mW, DO-35 package, ±5% tolerance, 30 Ω rd at 5 mA. | Higher dynamic impedance degrades regulation accuracy under load variation; smaller DO-35 footprint limits thermal mass. | Choose for space-constrained boards where 500 mW margin offsets lower precision. |
Compared with 1N4744A and BZX55-C15, the HZS15-2TD-E offers tighter voltage grading (±2% vs. ±5%), lower dynamic resistance (11 Ω vs. ≥30 Ω), and optimized thermal performance in the MHD package - making it preferable for precision analog biasing and stable low-current references.
Availability
HZS15-2TD-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reset circuits, DC-DC converter feedback, and overvoltage protection requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant sourcing.
Supply support for HZS15-2TD-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 HZS Series was developed as a family of general-purpose silicon planar Zener diodes targeting cost-effective, thermally robust voltage stabilization in non-safety-critical industrial and consumer power systems.
FAQ
What is the exact zener voltage range for HZS15-2TD-E?
The HZS15-2TD-E has a guaranteed zener voltage range of 14.9 V to 15.5 V when tested at 5 mA zener current and 25 °C ambient temperature. This corresponds to the "-2" grade in the HZS15 series and reflects ±2% tolerance around the nominal 15 V rating, confirmed in Renesas document REJ03G0184-0500 Rev.5.00.
Is HZS15-2TD-E RoHS compliant?
Yes, HZS15-2TD-E is RoHS compliant per EU Directive 2011/65/EU. Renesas confirms environmental compliance for the HZS Series in its official documentation and product change notices, and the device carries no restricted substances above threshold limits. Full compliance data is available through Renesas' material declaration portal.
What is the maximum continuous reverse current HZS15-2TD-E can handle?
The HZS15-2TD-E does not specify a maximum continuous reverse current directly, but its safe operating area is defined by power dissipation: at 25 °C, it supports up to ~26.7 mA (400 mW ÷ 15 V) continuously. Derating applies above 25 °C - e.g., ~13.3 mA at 75 °C ambient - based on the linear derating curve in Figure 3 of the datasheet.
Can HZS15-2TD-E replace a 1N4744A in a circuit?
HZS15-2TD-E is not a direct replacement for 1N4744A due to differing zener voltages (14.9–15.5 V vs. 13.3–14.7 V) and package (MHD vs. DO-41). While both are 15 V-class Zeners, the HZS15-2TD-E's tighter tolerance and lower dynamic resistance make it unsuitable for circuits relying on the 1N4744A's specific VZ distribution or thermal profile without validation.
What does the "TD-E" suffix mean in HZS15-2TD-E?
The "TD-E" suffix in HZS15-2TD-E identifies the JEITA package variant and marking code: "TD" indicates the MHD package with lake-blue cathode band and standard lead finish, while "E" denotes Renesas' internal manufacturing and testing grade for industrial reliability. This matches GRZZ0002ZC-A in Renesas' package code database.
HZS15-2TD-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:
- -
HZS15-2TD-E FAQ
1.How can I place an order for HZS15-2TD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS15-2TD-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 HZS15-2TD-E reliable?
The price and inventory of HZS15-2TD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS15-2TD-E is usually 5 days.
3.What payment methods are accepted for HZS15-2TD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS15-2TD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS15-2TD-E?
HZS15-2TD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS15-2TD-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 HZS15-2TD-E?
For technical support, including HZS15-2TD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS15-2TD-E requirements.
6.How does Aetrix verify that HZS15-2TD-E is sourced from the original manufacturer or authorized distributors?
All HZS15-2TD-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 HZS15-2TD-E meets industry standards.
7.What is the process for return or replacement of HZS15-2TD-E?
All HZS15-2TD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS15-2TD-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 HZS15-2TD-E part is unused and in its original packaging.
Return procedure for HZS15-2TD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS15-2TD-E Tags
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