My Inquiry
My Account
Renesas HZS24-2TA-E
- Part No.:
- HZS24-2TA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS24-2TA-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZS24-2TA-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 power dissipation in 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 HZS24-2TA-E datasheet, HZS24-2TA-E pinout, HZS24-2TA-E application, or HZS24-2TA-E equivalent, key selection criteria include its tight zener voltage tolerance (±0.6 V), low temperature coefficient (−0.04 %/°C typical), suitability for low-power reference and clamp circuits, and compatibility with standard through-hole assembly processes.
Technical Context
This device functions as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its zener voltage is specified at IZ = 2 mA with maximum dynamic resistance of 70 Ω, ensuring stable regulation under moderate load variation. The −55°C to +175°C storage temperature range supports industrial and automotive-grade board-level reliability requirements.
The MHD package features axial leads with cathode band marking, optimized for 5 mm-pitch automated insertion. Thermal resistance is not explicitly listed, but the 400 mW power rating and 200°C maximum junction temperature imply operation up to ~125°C ambient with appropriate PCB copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24.3–25.5 V at IZ = 2 mA - defines precise clamping/reference level for 24 V rail stabilization |
| Dynamic Resistance (rd) | Max 70 Ω at IZ = 2 mA - ensures minimal output voltage shift under ±1 mA load change |
| Power Dissipation (Pd) | 400 mW - supports continuous regulation in compact through-hole designs without forced cooling |
| Reverse Current (IR) | Max 1 µA at VR = 18.8 V - guarantees low leakage in standby or low-current bias networks |
| Junction Temperature (Tj) | 200°C max - enables reliable operation in thermally demanding environments when derated |
| Storage Temperature | −55°C to +175°C - meets extended industrial temperature grade requirements |
| Temperature Coefficient (γZ) | −0.04 %/°C typical - minimizes drift over temperature in precision reference applications |
Pinout & Package
The HZS24-2TA-E is housed in the MHD package - a glass-passivated, axial-leaded, DO-35 compatible outline with cathode band marking and 2.0 mm body diameter. Lead spacing is standardized for 5 mm-pitch automatic insertion.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal for reverse-biased operation | Connected to regulated positive rail; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Low-side terminal referenced to ground or common | Provides return path; anode must be at lower potential than cathode for zener action |
Key Features
| Feature | Design Value |
|---|---|
| Low zener impedance | 70 Ω max ensures <±20 mV output shift under ±1 mA load transients |
| Wide zener voltage spectrum | 24.3–25.5 V range enables accurate 24 V rail clamping without external trimming |
| High reliability construction | Planar silicon process with glass passivation delivers stable long-term VZ and low failure rate |
| Automated assembly compatibility | MHD package supports 5 mm-pitch high-speed insertion, reducing SMT conversion cost |
| Extended temperature capability | −55°C to +175°C storage range allows use in under-hood or industrial control enclosures |
Applications
| Industrial Power Monitoring | Automotive ECU Reference |
|---|---|
|
Use Scenario: Voltage supervision circuit in PLC I/O modules detecting undervoltage on 24 V DC field bus. IC Role / Device Role / Timing Role: Zener reference element providing stable threshold for comparator input. Use Value: Tight 24.3–25.5 V tolerance ensures trip point accuracy within ±0.6 V across temperature and life. |
Use Scenario: Clamp protection for microcontroller ADC reference input in engine control units exposed to load dump transients. IC Role / Device Role / Timing Role: Overvoltage shunt device limiting reference rail to safe level during 40 V transients. Use Value: 400 mW power rating sustains 200 ms load dump events without degradation when paired with series resistor. |
| Medical Sensor Biasing | Telecom Line Interface |
|
Use Scenario: Stable bias voltage generation for analog front-end amplifiers in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-drift voltage reference source for precision signal conditioning. Use Value: −0.04 %/°C temperature coefficient limits reference error to <±0.5% over 0–70°C operating range. |
Use Scenario: DC voltage clamping in DSL line driver protection circuits against induced surges. IC Role / Device Role / Timing Role: Fast-response shunt limiter absorbing transient energy before IC damage. Use Value: Low 1 µA leakage at 18.8 V prevents loading of high-impedance line interface nodes during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4749A | Zener voltage 24 V ±5%, rd = 15 Ω max, Pd = 1 W, DO-41 package | Higher power and lower impedance, but larger footprint and looser initial tolerance | Select when higher surge energy handling or tighter dynamic regulation is required, accepting larger board area |
| BZX55C24 | Zener voltage 24 V ±5%, rd = 80 Ω max, Pd = 500 mW, DO-35 package | Near-identical package and power rating, but wider VZ tolerance and higher impedance | Choose for cost-sensitive designs where ±5% VZ and 80 Ω rd are acceptable trade-offs |
Compared with 1N4749A and BZX55C24, HZS24-2TA-E offers superior initial voltage accuracy (±0.6 V vs. ±1.2 V) and lower temperature drift, making it preferred for precision 24 V reference and clamp roles where stability outweighs raw power handling.
Availability
HZS24-2TA-E is available at Aetrix Electronics and suitable for industrial power monitoring, automotive ECU reference, medical sensor biasing, and telecom line interface applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for HZS24-2TA-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.
HZS24-2TA-E belongs to the HZS Series of silicon planar Zener diodes engineered for high-stability voltage regulation in power supply feedback loops, reference circuits, and overvoltage protection - emphasizing precision, reliability, and manufacturability.
FAQ
What is the exact zener voltage range for HZS24-2TA-E?
The HZS24-2TA-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. This ±0.6 V tolerance is tighter than standard 5% Zener diodes and reflects Renesas' grading for precision applications. The value is measured under DC conditions per REJ03G0184-0500 Rev.5.00.
Is HZS24-2TA-E suitable for automotive under-hood applications?
HZS24-2TA-E supports storage temperatures from −55°C to +175°C and operates reliably up to 200°C junction temperature, meeting under-hood thermal requirements. However, Renesas classifies it as "Standard" grade - not qualified for safety-critical automotive systems without additional validation. For non-safety ECU reference or clamp use, it is commonly deployed with proper derating.
What does the "-2TA-E" suffix indicate in HZS24-2TA-E?
The "-2" denotes the voltage grade (24 V nominal), "TA" specifies the temperature coefficient group (−0.04 %/°C typical), and "E" indicates packaging in tape-and-reel per JEITA standard GRZZ0002ZC-A. This full suffix confirms the device's electrical binning, thermal behavior, and packaging format - all verified in the official Renesas datasheet REJ03G0184-0500.
Can HZS24-2TA-E replace a generic 24 V Zener diode in existing designs?
Yes - HZS24-2TA-E uses the industry-standard MHD (DO-35) package with axial leads and cathode band marking, enabling direct mechanical and soldering compatibility. Its tighter VZ tolerance and lower temperature drift improve performance without layout changes, provided the 400 mW power rating meets the original design's dissipation needs.
What is the maximum reverse leakage current for HZS24-2TA-E?
HZS24-2TA-E exhibits a maximum reverse leakage current (IR) of 1 µA when tested at VR = 18.8 V and Ta = 25°C. This low leakage preserves signal integrity in high-impedance bias networks and reduces quiescent power loss in battery-powered systems - a key advantage over many general-purpose Zeners with >5 µA leakage at similar voltages.
HZS24-2TA-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:
- -
HZS24-2TA-E FAQ
1.How can I place an order for HZS24-2TA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS24-2TA-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 HZS24-2TA-E reliable?
The price and inventory of HZS24-2TA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS24-2TA-E is usually 5 days.
3.What payment methods are accepted for HZS24-2TA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS24-2TA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS24-2TA-E?
HZS24-2TA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS24-2TA-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 HZS24-2TA-E?
For technical support, including HZS24-2TA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS24-2TA-E requirements.
6.How does Aetrix verify that HZS24-2TA-E is sourced from the original manufacturer or authorized distributors?
All HZS24-2TA-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 HZS24-2TA-E meets industry standards.
7.What is the process for return or replacement of HZS24-2TA-E?
All HZS24-2TA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS24-2TA-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 HZS24-2TA-E part is unused and in its original packaging.
Return procedure for HZS24-2TA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZS24-2TA-E Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
