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Renesas HZS24NB3TA-E
- Part No.:
- HZS24NB3TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS24NB3TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
HZS24NB3TA-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 24.26–26.26 V, maximum power dissipation of 400 mW, dynamic resistance ≤19 Ω at 5 mA, and reverse current ≤0.2 μA at 19 V - deployed in industrial instrumentation and low-power reference circuits.
For engineers reviewing the HZS24NB3TA-E datasheet, HZS24NB3TA-E pinout, HZS24NB3TA-E application, or HZS24NB3TA-E equivalent, this page delivers verified electrical specs, thermal derating behavior, package mechanical data, and direct alternative options for voltage reference design and overvoltage protection circuits.
Technical Context
The HZS24NB3TA-E operates as a two-terminal shunt regulator, maintaining stable output voltage across varying load currents via controlled reverse-biased breakdown. Its zener voltage exhibits a positive temperature coefficient of +0.04 to +0.06 %/°C in the 24 V range, enabling predictable thermal drift compensation in analog references.
Rated for junction temperatures up to 200°C and storage from –55°C to +175°C, it supports high-reliability operation in thermally demanding environments. The device uses a silicon planar construction with low leakage (≤0.2 μA) and low dynamic impedance (≤19 Ω), ensuring minimal output variation under transient load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24.26 V (min) to 26.26 V (max) at IZ = 5 mA - defines tight regulation window for 24 V rail stabilization |
| Dynamic Resistance (rd) | ≤19 Ω at IZ = 5 mA - ensures low output impedance and minimal voltage shift under load transients |
| Reverse Current (IR) | ≤0.2 μA at VR = 19 V - guarantees negligible standby power loss in battery-backed systems |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets absolute thermal limit before derating begins per Fig.3 |
| Junction Temperature (Tj) | 200°C maximum - enables operation in high-ambient industrial enclosures without forced cooling |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - 5 mm pitch, axial-leaded, 2.0 mm diameter body for automated insertion |
| Zener Temp. Coefficient (γZ) | +0.04 to +0.06 %/°C - allows accurate drift modeling in temperature-compensated reference designs |
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 (Banded End) | Cathode | Connected to regulated output node; reverse-bias terminal where zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | ≤19 Ω at 5 mA - improves line/load regulation and reduces output noise coupling |
| High-temperature capability | 200°C max junction temperature - supports use in engine control units and industrial motor drives |
| Precision voltage grading | B3 grade tolerance (±5% VZ spread) - enables consistent performance across production batches |
| Automated assembly compatibility | 5 mm pitch, MHD package - optimized for high-speed pick-and-place and wave soldering |
| Low leakage current | ≤0.2 μA at 19 V - critical for ultra-low-power sensor biasing and energy-harvesting circuits |
Applications
| Industrial Power Monitoring | Programmable Logic Controller (PLC) Input Protection |
|---|---|
Use Scenario: Monitoring 24 V DC supply rails in factory automation panels with ±1% accuracy requirement. IC Role / Device Role / Timing Role: Shunt voltage reference and overvoltage clamp protecting ADC front-end circuitry. Use Value: Maintains regulation within 24.26–26.26 V while absorbing surge energy up to 400 mW without degradation. |
Use Scenario: Protecting digital input channels on PLC modules against field-wiring transients and ESD. IC Role / Device Role / Timing Role: Fast-acting crowbar element limiting input voltage to safe logic levels. Use Value: Clamps >24 V excursions within nanoseconds, with <0.2 μA leakage preserving signal integrity at rest. |
| Medical Diagnostic Equipment Biasing | Test & Measurement Reference Source |
Use Scenario: Providing stable bias voltage for photodiode amplifiers in portable blood analyzers. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference for analog front-end gain stages. Use Value: Delivers <19 Ω output impedance and +0.05 %/°C tempco - enabling sub-0.1% measurement repeatability. |
Use Scenario: Serving as calibration reference in handheld multimeters requiring traceable 24 V source. IC Role / Device Role / Timing Role: Primary voltage standard in self-calibration routines. Use Value: B3-grade binning ensures batch-to-batch VZ consistency within ±5%, reducing recalibration frequency. |
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 |
|---|---|---|---|
| 1N4749A | Zener voltage 24 V ±5%, Pd = 1 W, rd = 20 Ω - higher power but larger DO-41 package | Suitable for higher-current regulation (>100 mA); less suited for space-constrained PCBs | Select when thermal headroom >600 mW is required and MHD footprint is not mandatory |
| BZX84-C24 | Zener voltage 24 V ±5%, Pd = 300 mW, SOT-23 package - surface-mount, lower power rating | Preferred for compact, high-density layouts; limited to ≤75 mA continuous current | Choose for automated SMT lines where board area is constrained and 300 mW suffices |
Compared with HZS24NB3TA-E, the 1N4749A offers greater thermal margin but requires larger board real estate, while the BZX84-C24 enables miniaturization at the cost of reduced power handling - making HZS24NB3TA-E optimal for through-hole, medium-power, high-temp industrial designs.
Availability
HZS24NB3TA-E is available at Aetrix Electronics and suitable for industrial power monitoring, PLC input protection, medical diagnostic biasing, and test equipment calibration requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for HZS24NB3TA-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.
HZS24NB3TA-E belongs to the HZS-N Series silicon planar zener diodes - engineered for high-stability voltage reference and overvoltage protection in industrial power systems where reliability and thermal resilience are critical.
FAQ
What is the exact zener voltage range for HZS24NB3TA-E?
The HZS24NB3TA-E has a guaranteed zener voltage range of 24.26 V (minimum) to 26.26 V (maximum) when tested at IZ = 5 mA and Ta = 25°C. This B3-grade specification reflects ±5% tolerance around the nominal 24 V point, confirmed in Renesas document REJ03G0185-0300 Rev.3.00.
Does HZS24NB3TA-E support high-temperature operation?
Yes, HZS24NB3TA-E is rated for junction temperatures up to 200°C and storage temperatures from –55°C to +175°C. Its silicon planar construction and MHD package enable reliable operation in industrial motor drives and engine control units where ambient temperatures exceed 100°C.
What is the dynamic resistance of HZS24NB3TA-E and why does it matter?
HZS24NB3TA-E exhibits dynamic resistance ≤19 Ω at IZ = 5 mA. This low value ensures minimal output voltage variation under changing load conditions - critical for precision analog references and feedback networks where regulation stability directly impacts system accuracy.
Is HZS24NB3TA-E RoHS compliant?
Yes, HZS24NB3TA-E complies with the EU RoHS Directive. Renesas confirms environmental compliance in its product documentation and supports material declarations upon request - essential for medical, industrial, and consumer electronics programs requiring full substance traceability.
How is the cathode identified on HZS24NB3TA-E?
The cathode of HZS24NB3TA-E is marked by a black band on the MHD package body. Pin 1 (banded end) is the cathode, and Pin 2 (non-banded end) is the anode - consistent with JEITA GRZZ0002ZC-A mechanical specifications and Renesas' published pin arrangement diagram.
HZS24NB3TA-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:
- -
HZS24NB3TA-E FAQ
1.How can I place an order for HZS24NB3TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS24NB3TA-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 HZS24NB3TA-E reliable?
The price and inventory of HZS24NB3TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS24NB3TA-E is usually 5 days.
3.What payment methods are accepted for HZS24NB3TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS24NB3TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS24NB3TA-E?
HZS24NB3TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS24NB3TA-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 HZS24NB3TA-E?
For technical support, including HZS24NB3TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS24NB3TA-E requirements.
6.How does Aetrix verify that HZS24NB3TA-E is sourced from the original manufacturer or authorized distributors?
All HZS24NB3TA-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 HZS24NB3TA-E meets industry standards.
7.What is the process for return or replacement of HZS24NB3TA-E?
All HZS24NB3TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS24NB3TA-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 HZS24NB3TA-E part is unused and in its original packaging.
Return procedure for HZS24NB3TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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