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Renesas HZS39NB3TA-E
- Part No.:
- HZS39NB3TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS39NB3TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZS39NB3TA-E from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in stabilized power supplies, with 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, used in industrial instrumentation and DC-DC feedback networks.
For engineers reviewing the HZS39NB3TA-E datasheet, HZS39NB3TA-E pinout, HZS39NB3TA-E application, or HZS39NB3TA-E equivalent, this page delivers verified electrical parameters, package mapping to MHD (JEITA GRZZ0002ZC-A), thermal derating behavior, and direct alternative options for voltage reference design in cost-sensitive, high-reliability linear regulator circuits.
Technical Context
The HZS39NB3TA-E operates as a two-terminal shunt voltage reference, maintaining stable output voltage across varying load currents via controlled reverse-biased avalanche breakdown. Its low leakage (<0.2 μA at VR = 23 V) and tight zener voltage tolerance (B3 grade: ±2.7% typical) support accurate feedback in unregulated input environments.
Thermal stability is defined by a zener voltage temperature coefficient of +0.06%/°C (≈+22 mV/°C) near 39 V, and power dissipation derates linearly above 25°C ambient-fully rated at 400 mW up to 70°C on a standard 100 × 180 × 1.6 mm phenolic PCB per Fig.3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36.63–38.52 V at IZ = 5 mA - defines regulated output level for feedback loop setpoint accuracy |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous power handling before thermal shutdown risk |
| Dynamic Resistance (rd) | 30 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Leakage (IR) | ≤0.2 μA at VR = 23 V - ensures minimal quiescent current draw in standby mode |
| Junction Temperature (Tj) | 200°C maximum - enables operation in high-ambient industrial enclosures with adequate heatsinking |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - 5 mm pitch, axial-leaded, 2.0 mm diameter body for automated insertion |
Pinout & Package
MHD package: axial-leaded, cylindrical glass-body diode with cathode band marking; lead spacing 5 mm, body diameter 2.0 mm, length 26.0 mm, mass 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference node | Connected to regulated output rail; reverse-bias voltage applied here to initiate zener conduction |
| 2 (Anode) | Low-side return path | Connected to ground or common reference; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 30 Ω at 5 mA enables <1% output deviation under ±10 mA load transients |
| Wide zener voltage range | 36.63–38.52 V supports 39 V nominal rail stabilization without external resistor trimming |
| High-temperature operation | Rated to 200°C junction temperature allows use in sealed industrial power modules |
| Automated insertion compatibility | 5 mm pitch and MHD mechanical dimensions ensure reliable placement on high-speed SMT lines with axial feeders |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output of unregulated 48 V DC-DC converter in programmable logic controller (PLC) power stage. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 39 V setpoint to error amplifier input. Use Value: Maintains ±1.5% output accuracy over –40 to +85°C ambient with no active compensation required. |
Use Scenario: Clamping transient surges on 36 V battery monitoring line in electric vehicle auxiliary systems. IC Role / Device Role / Timing Role: Fast-acting crowbar element limiting voltage to 38.52 V peak during load dump events. Use Value: Absorbs 400 mW surge energy for >40 ms without degradation, per pulse-width rating. |
| Reference Voltage Source | Current Source Biasing |
Use Scenario: Generating stable bias for op-amp-based current sense amplifier in solar charge controller. IC Role / Device Role / Timing Role: Fixed-voltage node establishing reference for precision shunt resistor scaling. Use Value: Delivers <0.2 μA leakage at 23 V, minimizing offset error in microamp-level sensing paths. |
Use Scenario: Setting constant current for LED string driver in industrial signage with wide input variation. IC Role / Device Role / Timing Role: Zener-defined voltage drop across series resistor to fix emitter-base bias. Use Value: Enables ±2% current regulation across 30–50 V input range using single passive component. |
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 |
|---|---|---|---|
| 1N4763A (ON Semiconductor) | Zener voltage 39 V ±5%, Pd = 1 W, DO-41 package, rd = 35 Ω | Higher power rating suits higher-current clamping; larger DO-41 footprint requires layout change | Select when >400 mW surge energy absorption is required and board space permits larger package |
| BZX85C39 (Nexperia) | Zener voltage 39 V ±5%, Pd = 1.3 W, DO-41, rd = 40 Ω, IR = 5 μA @ 31.2 V | Higher leakage and looser tolerance reduce precision in low-power feedback loops | Prefer for cost-driven overvoltage clamp where ±5% regulation is acceptable and thermal margin is ample |
Compared with HZS39NB3TA-E, the 1N4763A offers higher power headroom but requires PCB rework due to DO-41 size, while BZX85C39 trades tighter thermal coefficient and lower leakage for relaxed tolerance and higher leakage-making HZS39NB3TA-E optimal for precision 39 V references in space-constrained industrial designs.
Availability
HZS39NB3TA-E is available at Aetrix Electronics and suitable for industrial power supplies, battery management systems, and analog sensor signal conditioning requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HZS39NB3TA-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.
HZS39NB3TA-E belongs to the HZS-N Series silicon planar Zener diodes, engineered for high-stability voltage regulation in cost-sensitive, high-volume industrial power applications where reliability and automated assembly compatibility are critical.
FAQ
What is the exact zener voltage range specified for HZS39NB3TA-E?
The HZS39NB3TA-E has a guaranteed zener voltage range of 36.63 V to 38.52 V at a test current of 5 mA, corresponding to the B3 grade tolerance within the HZS-N Series. This range is confirmed in the "Electrical Characteristics" table on page 4 of Renesas document REJ03G0185-0300 Rev.3.00, and applies specifically to the HZS39NB3TA-E variant-not the broader HZS39N family.
Does HZS39NB3TA-E support automatic insertion in high-speed manufacturing?
Yes, HZS39NB3TA-E is explicitly qualified for 5 mm-pitch high-speed automatic insertion, as stated in the "Features" section on page 1 of its datasheet. Its MHD package (JEITA GRZZ0002ZC-A) has standardized axial lead spacing and mechanical dimensions compatible with industry-standard pick-and-place feeders and insertion equipment.
What is the maximum allowable reverse voltage before breakdown for HZS39NB3TA-E?
HZS39NB3TA-E does not specify a discrete "reverse breakdown threshold" separate from its zener voltage. It enters controlled zener conduction at approximately 36.63 V under 5 mA test conditions. Operation below 36.63 V yields only leakage current ≤0.2 μA at 23 V, per the Electrical Characteristics table. Sustained reverse voltage above 38.52 V risks exceeding power limits unless current is strictly limited.
How does the temperature coefficient affect HZS39NB3TA-E performance in outdoor industrial gear?
HZS39NB3TA-E exhibits a positive zener voltage temperature coefficient of +0.06%/°C (≈+22 mV/°C at 39 V), meaning its regulated voltage increases ~22 mV per °C rise in junction temperature. In outdoor enclosures reaching 85°C ambient, this results in ~1.3 V upward shift-acceptable for non-critical clamping but requiring compensation in precision reference designs.
Is HZS39NB3TA-E compliant with RoHS and lead-free assembly requirements?
Yes, HZS39NB3TA-E meets EU RoHS Directive requirements, as confirmed by Renesas' environmental compliance statements in document REJ03G0185-0300 and their public policy (Note 10, page 1). The device uses lead-free terminations and is compatible with standard Pb-free reflow profiles, though it is not a surface-mount part and is intended for through-hole or axial insertion.
HZS39NB3TA-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:
- -
HZS39NB3TA-E FAQ
1.How can I place an order for HZS39NB3TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS39NB3TA-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 HZS39NB3TA-E reliable?
The price and inventory of HZS39NB3TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS39NB3TA-E is usually 5 days.
3.What payment methods are accepted for HZS39NB3TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS39NB3TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS39NB3TA-E?
HZS39NB3TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS39NB3TA-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 HZS39NB3TA-E?
For technical support, including HZS39NB3TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS39NB3TA-E requirements.
6.How does Aetrix verify that HZS39NB3TA-E is sourced from the original manufacturer or authorized distributors?
All HZS39NB3TA-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 HZS39NB3TA-E meets industry standards.
7.What is the process for return or replacement of HZS39NB3TA-E?
All HZS39NB3TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS39NB3TA-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 HZS39NB3TA-E part is unused and in its original packaging.
Return procedure for HZS39NB3TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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