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Renesas HZS24-3TA-E
- Part No.:
- HZS24-3TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS24-3TA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZS24-3TA-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 24.3–25.5 V at 2 mA test current, 70 Ω dynamic resistance, and 400 mW maximum power dissipation in the MHD package. It operates across −55°C to +175°C storage range and supports high-speed automatic insertion on 5 mm-pitch PCBs.
For engineers reviewing the HZS24-3TA-E datasheet, HZS24-3TA-E pinout, HZS24-3TA-E application, or HZS24-3TA-E equivalent, this device serves as a low-leakage, low-impedance voltage reference in industrial power rails, analog sensor biasing, and overvoltage protection circuits where stable 24 V clamping is required under moderate current loads.
Technical Context
This Zener diode employs a silicon planar junction structure optimized for low zener impedance (70 Ω) and tight voltage tolerance (±0.6 V at 24 V nominal), enabling stable regulation under varying load and temperature conditions. Its 200°C maximum junction temperature and −55°C to +175°C storage range support operation in harsh industrial environments.
The device is characterized at DC test conditions with 2 mA zener current, exhibits a negative temperature coefficient near −0.04 %/°C at 24 V, and is rated for 1 µA maximum reverse leakage at VR = 19.0 V - confirming suitability for low-power reference and clamp functions without significant thermal drift or standby loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24.3–25.5 V at IZ = 2 mA - defines precise clamping threshold for 24 V rail stabilization |
| Dynamic Resistance (rd) | 70 Ω max at IZ = 2 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - sets thermal design limit for PCB trace width and copper area |
| Reverse Leakage Current (IR) | 1 µA max at VR = 19.0 V - guarantees negligible standby current in always-on bias networks |
| Junction Temperature (Tj) | 200°C max - enables reliable operation in high-ambient industrial enclosures without derating |
| Package | MHD (JEITA GRZZ0002ZC-A) - surface-mount compatible, 5 mm pitch auto-insertion ready, 0.084 g mass |
Pinout & Package
The HZS24-3TA-E is housed in the MHD package - a molded plastic case with axial leads, 2.0 mm diameter (φD), 26.0 mm body length (L), and 2.4 mm lead spacing (E). Cathode identified by lake-blue band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener reference terminal | Connected to regulated voltage node; polarity must be observed to enable reverse-bias conduction |
| 2 (Anode) | Reference ground return | Typically tied to system ground or lower-potential rail; completes zener bias path |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 70 Ω max ensures <15 mV output shift per 1 mA load change - critical for precision analog references |
| Wide zener voltage spectrum | 24.3–25.5 V range supports tight-tolerance 24 V systems without external trimming resistors |
| High-temperature capability | 200°C max junction temperature allows use in sealed industrial power modules without forced cooling |
| Low leakage performance | 1 µA max reverse current at 19 V enables microamp-level standby operation in battery-backed circuits |
| Automated assembly compatibility | MHD package with 5 mm pitch meets IPC-7351B standards for high-speed pick-and-place and wave soldering |
Applications
| Industrial Power Supply Regulation | Automotive Sensor Biasing |
|---|---|
Use Scenario: Stabilizing +24 V auxiliary rail in PLC I/O modules under variable load and ambient temperature. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference and overvoltage clamp. Use Value: Maintains ±1.2% output stability across −40°C to +85°C ambient with no active feedback components. |
Use Scenario: Providing stable 24 V bias to Hall-effect position sensors in engine control units. IC Role / Device Role / Timing Role: Passive voltage reference ensuring consistent sensor excitation despite battery voltage fluctuations. Use Value: Enables <±0.5% sensor output linearity by eliminating supply-induced gain drift. |
| Telecom Line Card Protection | Test Equipment Reference |
Use Scenario: Clamping transient surges on 24 V backplane bus in carrier-grade access switches. IC Role / Device Role / Timing Role: Primary overvoltage protection element absorbing short-duration ESD and lightning-induced spikes. Use Value: Limits bus voltage to ≤26.6 V during 1 kV/µs transients, preventing downstream IC latch-up. |
Use Scenario: Serving as calibration reference in portable multimeters requiring stable 24 V source for ADC full-scale setting. IC Role / Device Role / Timing Role: Precision shunt reference replacing bulkier TL431-based solutions. Use Value: Delivers 25 ppm/°C effective tempco when used with matched series resistor, reducing calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5245B | 24 V nominal (22.8–25.2 V), SOT-23 package, 225 mW Pd, 30 Ω rd | SMT-only, lower power rating, higher thermal resistance - unsuitable for >100 mA continuous dissipation | Select for space-constrained PCBs where board area is prioritized over power handling |
| Vishay BZX55C24 | 24 V nominal (22.8–25.6 V), DO-35 glass package, 500 mW Pd, 80 Ω rd | Through-hole, higher power, larger footprint, slower automated insertion - requires manual rework for high-volume lines | Select when legacy through-hole assembly or higher surge energy absorption is required |
Compared with MMBZ5245B and BZX55C24, the HZS24-3TA-E uniquely balances 400 mW power handling, 70 Ω impedance, and MHD auto-insertion compatibility - making it optimal for mid-volume industrial power modules needing both reliability and manufacturing efficiency.
Availability
HZS24-3TA-E is available at Aetrix Electronics and suitable for industrial power supply regulation, telecom line card protection, automotive sensor biasing, and test equipment reference applications requiring stable component supply and long-term obsolescence management.
Supply support for HZS24-3TA-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 Series was developed as a family of silicon planar Zener diodes targeting cost-effective, high-reliability voltage stabilization in industrial power conversion and protection circuits - emphasizing low leakage, tight voltage tolerance, and automated assembly readiness.
FAQ
What is the exact zener voltage range specified for HZS24-3TA-E?
The HZS24-3TA-E has a guaranteed zener voltage range of 24.3 V to 25.5 V when tested at IZ = 2 mA and Ta = 25°C, per Renesas datasheet REJ03G0184-0500 Rev.5.00. This 1.2 V span reflects grade "-3" tolerance within the HZS24 family and ensures predictable clamping behavior in 24 V systems without additional trimming.
Does HZS24-3TA-E support surface-mount assembly?
No - the HZS24-3TA-E uses the MHD package, a radial leaded, molded plastic case intended for through-hole mounting and high-speed automatic insertion on 5 mm pitch PCBs. It is not a surface-mount device; for SMT alternatives, consider ON Semiconductor's MMBZ5245B or Diodes Inc.'s BZT52-B24.
What is the maximum reverse leakage current for HZS24-3TA-E?
The maximum reverse leakage current for HZS24-3TA-E is 1 µA at VR = 19.0 V and Ta = 25°C, as specified in the Electrical Characteristics table on page 4 of the Renesas datasheet. This low leakage supports energy-efficient designs where standby current must remain below microamp thresholds.
Can HZS24-3TA-E be used in automotive applications?
HZS24-3TA-E is classified as a Standard-grade Renesas product, qualified for industrial and commercial applications including office equipment and test instrumentation. It is not AEC-Q200 qualified and lacks automotive-specific screening - therefore not recommended for under-hood automotive use without additional qualification testing by the end customer.
What is the thermal resistance junction-to-ambient for HZS24-3TA-E?
The datasheet does not specify an explicit RθJA value for HZS24-3TA-E. However, Figure 3 (Power Dissipation vs. Ambient Temperature) shows derating begins at ~50°C, implying an effective RθJA of approximately 375°C/W for the MHD package in still air - consistent with similar axial-leaded Zener packages. Layout with ≥1 cm² copper pour improves thermal performance.
HZS24-3TA-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:
- -
HZS24-3TA-E FAQ
1.How can I place an order for HZS24-3TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS24-3TA-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 HZS24-3TA-E reliable?
The price and inventory of HZS24-3TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS24-3TA-E is usually 5 days.
3.What payment methods are accepted for HZS24-3TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS24-3TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS24-3TA-E?
HZS24-3TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS24-3TA-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 HZS24-3TA-E?
For technical support, including HZS24-3TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS24-3TA-E requirements.
6.How does Aetrix verify that HZS24-3TA-E is sourced from the original manufacturer or authorized distributors?
All HZS24-3TA-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 HZS24-3TA-E meets industry standards.
7.What is the process for return or replacement of HZS24-3TA-E?
All HZS24-3TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS24-3TA-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 HZS24-3TA-E part is unused and in its original packaging.
Return procedure for HZS24-3TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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