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Renesas HZS24-2LTD-E
- Part No.:
- HZS24-2LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS24-2LTD-E.pdf
- Description:
- DIODE ZENER
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Inventory:6,500
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Product details
Overview
HZS24-2LTD-E from Renesas Electronics is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog and stabilized power supply circuits, with a nominal zener voltage of 24.2 V (min 23.6 V, max 24.7 V), 400 mW power dissipation, 22 Ω dynamic impedance at 0.5 mA test current, and −55 °C to +175 °C storage temperature range. It serves as a reference element in instrumentation, sensor signal conditioning, and industrial control power rails.
For engineers reviewing the HZS24-2LTD-E datasheet, HZS24-2LTD-E pinout, HZS24-2LTD-E application, or HZS24-2LTD-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of HZ series), tight zener voltage tolerance, low leakage, and suitability for 5 mm-pitch automated insertion in high-reliability industrial PCBs.
Technical Context
This device operates as a two-terminal, DC-biased voltage reference using silicon planar junction technology. Its zener breakdown mechanism delivers stable regulation across ambient temperatures, with a zener voltage temperature coefficient of approximately −0.04 %/°C (−8.2 mV/°C) near 24 V - confirmed by Figure 2 in REJ03G0166-0300 Rev.3.00.
The HZS24-2LTD-E exhibits low dynamic resistance (22 Ω at IZ = 0.5 mA) and low reverse leakage (≤1 μA at VR = 20 V), enabling high-accuracy feedback in shunt regulator topologies. Its MHD package supports thermal dissipation up to 400 mW at Ta = 25 °C, derating linearly per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.6 V min / 24.7 V max at IZ = 0.5 mA - defines usable regulation window for ±2.3% tolerance in precision references. |
| Power Dissipation (Pd) | 400 mW at Ta = 25 °C - sets maximum continuous shunt power before thermal derating applies. |
| Dynamic Resistance (rd) | 22 Ω at IZ = 0.5 mA - determines output impedance and load regulation sensitivity in feedback networks. |
| Reverse Leakage (IR) | ≤1 μA at VR = 20 V - ensures minimal error current in high-impedance reference nodes. |
| Junction Temperature (Tj) | 200 °C maximum - enables operation in high-ambient industrial environments with appropriate board thermal design. |
| Storage Temperature | −55 °C to +175 °C - supports extended environmental qualification for automotive-adjacent and industrial deployments. |
| Noise Level | ≈1/3–1/10 of HZ series - directly reduces RMS noise contribution in low-level analog signal chains and ADC references. |
Pinout & Package
The HZS24-2LTD-E is housed in the MHD package (JEITA code GRZZ0002ZC-A), a radial leaded, epoxy-molded, 2.0 mm diameter cylindrical case with 26.0 mm body length and 2.4 mm pitch - optimized for 5 mm-pitch high-speed automatic insertion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener cathode terminal | Connected to regulated positive rail; polarity must be observed to avoid forward conduction or breakdown failure. |
| 2 (Anode) | Zener anode terminal | Connected to circuit ground or lower potential node; forms reference return path for shunt current. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise reduced to ≈10–33% of legacy HZ series - critical for high-resolution data acquisition front-ends. |
| Tight zener voltage tolerance | ±2.3% (23.6–24.7 V) at 0.5 mA - eliminates need for post-calibration trimming in factory-set references. |
| Low dynamic impedance | 22 Ω at 0.5 mA - maintains regulation stability under varying load currents in unregulated input conditions. |
| High power rating | 400 mW dissipation - supports robust shunt regulation without external heat sinking in compact layouts. |
| Automated assembly compatibility | 5 mm pitch, MHD radial package - enables direct integration into high-volume SMT-compatible through-hole production lines. |
Applications
| Industrial Power Monitoring | Medical Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Real-time monitoring of 24 V DC bus voltage in PLC backplanes and motor drive controllers. IC Role / Device Role / Timing Role: Shunt voltage reference for ADC input scaling and overvoltage detection comparators. Use Value: Low 22 Ω dynamic resistance minimizes measurement error drift across temperature and load variations. |
Use Scenario: Providing stable bias for bridge-based pressure or temperature transducers in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise voltage reference for excitation and ratiometric ADC conversion. Use Value: Noise level ≈1/10 of HZ series reduces baseline uncertainty in sub-mV signal measurements. |
| Test & Measurement Equipment | Automotive Aftermarket Control Modules |
|
Use Scenario: Calibration reference in handheld multimeters and benchtop power supplies requiring traceable 24 V stability. IC Role / Device Role / Timing Role: Primary zener reference in precision voltage divider networks feeding DACs and op-amp references. Use Value: Tight 23.6–24.7 V tolerance and −0.04 %/°C tempco enable <±0.5% total error over −40 to +85 °C. |
Use Scenario: Regulating microcontroller I/O supply and CAN transceiver bias in vehicle telematics units. IC Role / Device Role / Timing Role: Secondary shunt regulator stabilizing local 24 V rail derived from switched 12/24 V battery systems. Use Value: 200 °C junction rating and −55 to +175 °C storage range support under-hood thermal cycling resilience. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24LT1G | 24 V nominal, 300 mW Pd, 40 Ω rd, SOT-23 package | Suitable for space-constrained PCBs but lacks low-noise optimization and MHD mechanical robustness | Prefer HZS24-2LTD-E when noise floor or thermal reliability in industrial environments is critical |
| 1N4749A | 24 V nominal, 1 W Pd, 25 Ω rd, DO-41 package, higher leakage (≤5 μA) | Higher power handling but no documented low-noise specification; larger footprint than MHD | Choose HZS24-2LTD-E where low-noise performance and automated insertion compatibility are required |
Compared with BZX84-C24LT1G and 1N4749A, the HZS24-2LTD-E uniquely combines low-noise operation, 400 mW power rating in a compact MHD package, and verified 5 mm-pitch assembly compatibility - making it optimal for high-accuracy, high-volume industrial reference designs.
Availability
HZS24-2LTD-E is available at Aetrix Electronics and suitable for industrial power monitoring, medical sensor signal conditioning, test & measurement equipment, and automotive aftermarket control modules requiring stable component supply and long-term manufacturability.
Supply support for HZS24-2LTD-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-L Series was developed specifically for low-noise, high-stability voltage reference applications in industrial and test equipment - emphasizing tight tolerance, low dynamic impedance, and automated manufacturing readiness.
FAQ
What is the zener voltage tolerance of HZS24-2LTD-E?
The HZS24-2LTD-E has a zener voltage range of 23.6 V minimum to 24.7 V maximum at IZ = 0.5 mA, corresponding to a ±2.3% tolerance around the nominal 24.2 V value. This tight spread is specified in the Electrical Characteristics table on page 2 of REJ03G0166-0300 Rev.3.00 and enables accurate calibration without trimming in many industrial reference designs.
Does HZS24-2LTD-E meet RoHS requirements?
Yes, HZS24-2LTD-E complies with the EU RoHS Directive, as confirmed by Renesas' environmental compliance documentation and material declarations. The device contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits, and is rated for standard industrial applications per Renesas quality grading.
What is the thermal derating behavior of HZS24-2LTD-E?
HZS24-2LTD-E follows linear thermal derating from 400 mW at Ta = 25 °C, reaching zero dissipation at approximately 175 °C ambient - consistent with the curve in Figure 3 of REJ03G0166-0300 Rev.3.00. Designers must calculate board-level thermal resistance to ensure junction temperature remains ≤200 °C under worst-case operating conditions.
Is HZS24-2LTD-E suitable for automotive applications?
HZS24-2LTD-E is classified as "Standard" grade per Renesas' quality grading system and is intended for industrial, office, and communications equipment - not for automotive safety-critical systems. While it operates across −55 °C to +175 °C, Renesas does not qualify it for AEC-Q101 or automotive-grade reliability testing; use requires explicit validation by the end customer per Note 7 in the datasheet.
How does the noise performance of HZS24-2LTD-E compare to generic Zener diodes?
HZS24-2LTD-E achieves approximately 1/3 to 1/10 the noise level of the legacy HZ series, as stated in the Features section of REJ03G0166-0300 Rev.3.00. This reduction stems from optimized silicon planar junction processing and is validated in low-frequency (<10 kHz) analog reference applications - directly improving SNR in precision ADC and sensor front-end designs using the HZS24-2LTD-E.
HZS24-2LTD-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:
- -
HZS24-2LTD-E FAQ
1.How can I place an order for HZS24-2LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS24-2LTD-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 HZS24-2LTD-E reliable?
The price and inventory of HZS24-2LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS24-2LTD-E is usually 5 days.
3.What payment methods are accepted for HZS24-2LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS24-2LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS24-2LTD-E?
HZS24-2LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS24-2LTD-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 HZS24-2LTD-E?
For technical support, including HZS24-2LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS24-2LTD-E requirements.
6.How does Aetrix verify that HZS24-2LTD-E is sourced from the original manufacturer or authorized distributors?
All HZS24-2LTD-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 HZS24-2LTD-E meets industry standards.
7.What is the process for return or replacement of HZS24-2LTD-E?
All HZS24-2LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS24-2LTD-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 HZS24-2LTD-E part is unused and in its original packaging.
Return procedure for HZS24-2LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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