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Renesas HZS39NB2TA-E
- Part No.:
- HZS39NB2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS39NB2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
HZS39NB2TA-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in stabilized power supplies, featuring a nominal zener voltage of 36.63–38.52 V at 5 mA test current, 400 mW power dissipation, and dynamic resistance of 30 Ω, deployed in low-leakage, high-stability reference and clamp circuits.
For engineers reviewing the HZS39NB2TA-E datasheet, HZS39NB2TA-E pinout, HZS39NB2TA-E application, or HZS39NB2TA-E equivalent, key selection criteria include verified zener voltage tolerance (±5.2% at B2 grade), thermal coefficient behavior near 0.07 mV/°C, junction temperature rating up to 200°C, and compatibility with 5 mm-pitch automated insertion in industrial power rail monitoring designs.
Technical Context
This device operates as a two-terminal voltage reference using silicon planar junction technology, with reverse-biased conduction optimized for stable breakdown at 36.63–38.52 V under 5 mA zener test current. Its low leakage (<0.2 μA at VR = 30 V) and tight dynamic impedance (30 Ω) support accurate regulation in feedback loops and overvoltage protection circuits.
The HZS39NB2TA-E exhibits a positive zener voltage temperature coefficient near +0.07 mV/°C within its operating range, enabling predictable drift compensation in temperature-sensitive references. It is rated for continuous operation up to 200°C junction temperature and storage between –55°C and +175°C, meeting standard-grade reliability requirements for industrial power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36.63–38.52 V at IZ = 5 mA - defines precise clamping threshold for 36–39 V rails |
| Power Dissipation (Pd) | 400 mW - supports sustained regulation without heatsinking in PCB-mounted applications |
| Dynamic Resistance (rd) | 30 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | ≤0.2 μA at VR = 30 V - enables low-error biasing in high-impedance reference nodes |
| Junction Temperature (Tj) | 200°C max - allows reliable operation in thermally constrained enclosures and high-ambient environments |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - 2-pin axial lead, 2.0 mm diameter, 26 mm body length, 5 mm pitch compatible |
Pinout & Package
Package: MHD - axial-lead, silicon planar Zener diode in epoxy-coated cylindrical package per JEITA code GRZZ0002ZC-A; dimensions: φD = 2.0 mm (nom), L = 26.0 mm (min), mass ≈ 0.084 g; suitable for wave soldering and 5 mm-pitch automatic insertion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Breakdown Anode Connection | Connected to regulated output node; polarity marking band identifies this terminal |
| 2 (Anode) | Reference Ground Node | Tied to system ground or lower-potential rail; completes reverse-bias path for zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low Zener Impedance | 30 Ω max ensures <±15 mV output shift across ±1 mA load variation at nominal VZ |
| Wide Zener Voltage Range | 36.63–38.52 V (B2 grade) provides design margin for 37 V nominal supply regulation |
| High Thermal Stability | 200°C max junction temperature enables use in enclosed power modules without derating |
| Automated Insertion Compatibility | 5 mm pitch and MHD mechanical form factor support high-throughput SMT-compatible through-hole assembly |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Clamp |
|---|---|
|
Use Scenario: Stabilizing feedback reference in isolated DC-DC converters delivering 36–39 V output for PLC I/O modules. IC Role / Device Role / Timing Role: Zener diode functions as primary voltage reference in TL431-based shunt regulator feedback network. Use Value: Tight 36.63–38.52 V tolerance and 30 Ω rd maintain ±0.5% output accuracy across line/load/temperature. |
Use Scenario: Clamping transient surges on 36 V battery-backed telemetry lines exposed to automotive load-dump conditions. IC Role / Device Role / Timing Role: Two-terminal passive clamp absorbing >100 V spikes into safe dissipation limits. Use Value: 400 mW Pd and 200°C Tj rating sustain repeated 50 ms transients without parametric shift or failure. |
| Programmable Logic Controller Input Conditioning | Industrial Sensor Excitation Reference |
|
Use Scenario: Providing stable 37 V bias for analog input channel protection circuitry in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Zener establishes fixed upper rail for TVS-assisted overvoltage front-end filtering. Use Value: Low 0.2 μA leakage avoids loading high-impedance sensor signal paths upstream of conditioning amplifiers. |
Use Scenario: Generating precise excitation voltage for 3-wire RTD measurement bridges requiring stable 37 V common-mode headroom. IC Role / Device Role / Timing Role: Passive voltage reference setting bridge supply potential independent of main rail fluctuations. Use Value: Positive 0.07 mV/°C tempco allows predictable calibration offset correction in firmware for ambient drift compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4763A | Zener voltage 39 V (±5%), Pd = 1 W, DO-41 package, rd = 35 Ω | Higher power rating suits higher-energy clamping; larger DO-41 footprint requires layout change | Select when >400 mW surge energy absorption is required and board space permits larger package |
| BZX55-C39 | Zener voltage 39 V (±5%), Pd = 500 mW, DO-35 package, rd = 50 Ω | Looser impedance and wider tolerance reduce regulation accuracy in precision references | Choose for cost-sensitive, non-critical clamping where ±5% VZ and higher rd are acceptable |
Compared with 1N4763A and BZX55-C39, the HZS39NB2TA-E delivers tighter voltage tolerance (±5.2% vs. ±5%), lower dynamic resistance (30 Ω vs. 35–50 Ω), and MHD package compatibility with 5 mm-pitch automation-making it optimal for space-constrained, high-accuracy industrial power monitoring where thermal stability and assembly efficiency are prioritized.
Availability
HZS39NB2TA-E is available at Aetrix Electronics and suitable for industrial power supply regulation, overvoltage protection clamp circuits, and programmable logic controller input conditioning requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HZS39NB2TA-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 global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZS-N Series is part of Renesas' discrete Zener diode portfolio engineered for high-stability voltage reference and clamp functions in industrial power conversion and protection systems, emphasizing low leakage, tight tolerance, and thermal robustness.
FAQ
What is the exact zener voltage range specified for HZS39NB2TA-E?
The HZS39NB2TA-E has a guaranteed zener voltage range of 36.63 V to 38.52 V when tested at IZ = 5 mA and Ta = 25°C. This B2 grade tolerance corresponds to ±5.2% about the nominal 37.5 V center point, as confirmed in Renesas document REJ03G0185-0300 Rev.3.00. The HZS39NB2TA-E maintains this specification across its qualified operating temperature range.
Does HZS39NB2TA-E support automated PCB assembly?
Yes, the HZS39NB2TA-E uses the MHD package (JEITA GRZZ0002ZC-A) explicitly designed for 5 mm-pitch high-speed automatic insertion, as stated in the "Features" section of the Renesas datasheet. Its axial lead configuration, 2.0 mm diameter, and standardized body length ensure compatibility with industry-standard pick-and-place and wave soldering equipment used in industrial electronics manufacturing.
What is the maximum junction temperature rating for HZS39NB2TA-E?
The HZS39NB2TA-E is rated for a maximum junction temperature (Tj) of 200°C, as specified in the Absolute Maximum Ratings table of the official Renesas datasheet. This high thermal limit enables reliable operation in enclosed power supplies, motor drive control boards, and other industrial environments where ambient temperatures exceed 85°C and heat dissipation is constrained.
How does the dynamic resistance of HZS39NB2TA-E affect regulation accuracy?
The HZS39NB2TA-E specifies a maximum dynamic resistance (rd) of 30 Ω at IZ = 5 mA. This low value means that a ±1 mA change in zener current produces only ±30 mV variation in output voltage-critical for maintaining tight regulation in feedback networks and precision clamp circuits where load-induced current shifts must not degrade system accuracy.
Is HZS39NB2TA-E compliant with RoHS and environmental regulations?
Yes, the HZS39NB2TA-E complies with the EU RoHS Directive and other applicable environmental regulations governing restricted substances, as confirmed by Renesas Electronics' corporate compliance statements and product-level declarations. Customers must verify current status via Renesas' official environmental portal, but the HZS39NB2TA-E is manufactured and qualified as RoHS-compliant per standard-grade industrial product requirements.
HZS39NB2TA-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:
- -
HZS39NB2TA-E FAQ
1.How can I place an order for HZS39NB2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS39NB2TA-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 HZS39NB2TA-E reliable?
The price and inventory of HZS39NB2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS39NB2TA-E is usually 5 days.
3.What payment methods are accepted for HZS39NB2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS39NB2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS39NB2TA-E?
HZS39NB2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS39NB2TA-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 HZS39NB2TA-E?
For technical support, including HZS39NB2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS39NB2TA-E requirements.
6.How does Aetrix verify that HZS39NB2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS39NB2TA-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 HZS39NB2TA-E meets industry standards.
7.What is the process for return or replacement of HZS39NB2TA-E?
All HZS39NB2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS39NB2TA-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 HZS39NB2TA-E part is unused and in its original packaging.
Return procedure for HZS39NB2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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