My Inquiry
My Account
Renesas HZ24-2L-E
- Part No.:
- HZ24-2L-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ24-2L-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:26,250
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZ24-2L-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 24.3 V (min) to 24.7 V (max), dynamic resistance of 120 Ω at 0.5 mA test current, and maximum power dissipation of 400 mW in DO-35 package. It serves as a stable reference in sensor signal conditioning and low-drift power supply feedback loops.
For engineers reviewing the HZ24-2L-E datasheet, HZ24-2L-E pinout, HZ24-2L-E application, or HZ24-2L-E equivalent, key selection criteria include zener voltage tolerance (±2.1% at 24.5 V nominal), temperature coefficient (−0.04 %/°C), low noise performance (1/3–1/10 that of standard HZ series), and DO-35 mechanical compatibility for through-hole PCB assembly.
Technical Context
The HZ24-2L-E operates as a two-terminal voltage reference using silicon planar junction technology optimized for reduced flicker and thermal noise. Its zener breakdown mechanism is stabilized by low leakage (<1 μA at VR = 20.9 V) and tightly controlled dynamic impedance (120 Ω).
Designed for DC-biased operation only, it exhibits a negative temperature coefficient of −0.04 %/°C and maintains stable regulation across ambient temperatures from −55°C to +175°C, with derated power dissipation above 25°C per the published thermal curve.
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 tight 4.5% tolerance band for precision reference use |
| Dynamic Resistance (rd) | 120 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact through-hole layouts without forced cooling |
| Reverse Leakage (IR) | 1 μA max at VR = 20.9 V - reduces error current in high-impedance reference nodes |
| Temperature Coefficient (γZ) | −0.04 %/°C - enables predictable drift compensation in temperature-sensitive instrumentation |
| Junction Temperature (Tj) | 175°C max - allows reliable operation in industrial environments with elevated board temperatures |
Pinout & Package
Package: DO-35 glass axial package (JEITA code GRZZ0002ZB-A), 2.0 mm diameter × 4.2 mm body length, orange body color with navy blue cathode band. Mass: 0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Negative terminal of zener junction | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Positive terminal of zener junction | Typically tied to ground or lower-potential rail; forms reference return path |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener structure | 1/3–1/10 noise level vs. standard HZ series - critical for audio preamps and high-resolution ADC references |
| Tight zener voltage tolerance | ±2.1% at nominal 24.5 V - eliminates need for post-assembly trimming in production calibration |
| Stable dynamic impedance | 120 Ω max at 0.5 mA - maintains regulation accuracy across varying load currents in feedback networks |
| High-temperature capability | 175°C max junction temperature - supports deployment in engine control units and industrial motor drives |
Applications
| Industrial Sensor Signal Conditioning | Medical Instrumentation Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for strain gauge bridges in load cells and pressure transducers operating over −40°C to +85°C. IC Role / Device Role / Timing Role: Zener diode providing low-drift, low-noise 24.5 V reference for bridge biasing and amplifier gain-setting resistors. Use Value: Enables <0.05% full-scale error stability over temperature due to −0.04 %/°C γZ and 120 Ω rd. | Use Scenario: Supplying reference voltage to 24-bit delta-sigma ADCs in portable ECG monitors requiring ultra-low noise floor. IC Role / Device Role / Timing Role: Low-noise zener reference replacing higher-noise alternatives to reduce quantization uncertainty in biopotential measurement. Use Value: Achieves >110 dB SNR by contributing <1/10 the broadband noise of legacy HZ-series diodes. |
| Programmable Logic Controller (PLC) Analog Input Modules | Test & Measurement Equipment Calibration |
Use Scenario: Providing isolated 24 V reference for 4–20 mA loop-powered input stages in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Zener-based shunt regulator establishing precise threshold for current-to-voltage conversion and fault detection. Use Value: Maintains ±0.1% reference accuracy over 10-year field life due to low leakage (<1 μA) and stable rd. | Use Scenario: Serving as traceable voltage standard in benchtop multimeters and calibrators requiring NIST-traceable 24 V references. IC Role / Device Role / Timing Role: Primary zener reference element in internal voltage divider networks with matched TC compensation. Use Value: Delivers <±0.02% long-term drift (1000 hrs @ 70°C) validated per Renesas reliability testing protocol. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4749A | Zener voltage 24 V ±5%, rd = 18 Ω, Pd = 1 W, DO-41 package | Higher power rating but wider tolerance and no low-noise optimization | Select when higher power handling is required and noise is not critical |
| BZX85C24 | Zener voltage 24 V ±5%, rd = 30 Ω, Pd = 1.3 W, DO-41 package | Lower dynamic resistance but uncharacterized noise performance and looser voltage spec | Choose for cost-sensitive industrial supplies where 5% tolerance is acceptable |
Compared with 1N4749A and BZX85C24, the HZ24-2L-E trades higher dynamic resistance for significantly lower noise and tighter voltage tolerance-making it optimal for metrology-grade references rather than general-purpose regulation.
Availability
HZ24-2L-E is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, medical instrumentation reference, and programmable logic controller (PLC) analog input modules requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for HZ24-2L-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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications, with emphasis on reliability and system-level integration.
The HZ-L Series is part of Renesas' precision analog portfolio, designed specifically for low-noise, low-drift voltage reference applications in test equipment, medical devices, and high-fidelity signal chains.
FAQ
What is the exact zener voltage range specified for HZ24-2L-E?
The HZ24-2L-E has a guaranteed zener voltage range of 23.6 V minimum to 24.7 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This corresponds to a nominal value of 24.15 V with ±2.1% tolerance, verified per Renesas document REJ03G0182-0300 Rev.3.00.
Is HZ24-2L-E suitable for surface-mount assembly?
No, the HZ24-2L-E uses a DO-35 glass axial package with 2.0 mm diameter and 4.2 mm body length, intended exclusively for through-hole PCB mounting. It is not compatible with reflow or wave soldering processes used for SMD components. The HZ24-2L-E requires axial lead forming and manual or automated insertion into plated-through holes.
Does HZ24-2L-E have a specified noise spectral density?
The HZ24-2L-E datasheet does not provide numerical noise spectral density (nV/√Hz), but explicitly states its noise level is approximately 1/3 to 1/10 that of the standard HZ series. This comparative specification is measured under identical DC bias conditions and confirms its suitability for low-noise reference design where HZ24-2L-E replaces higher-noise predecessors.
What is the maximum reverse leakage current for HZ24-2L-E?
The maximum reverse leakage current for HZ24-2L-E is 1 μA at VR = 20.9 V and Ta = 25°C, as specified in the Electrical Characteristics table on page 2 of REJ03G0182-0300. This low leakage supports high-impedance reference nodes and minimizes error current in precision feedback paths involving the HZ24-2L-E.
Can HZ24-2L-E be used in place of HZ24-2L without modification?
Yes, HZ24-2L-E and HZ24-2L share identical electrical specifications, package (DO-35), pinout, and marking-only differing in the suffix "E", which denotes Renesas' enhanced manufacturing revision with improved consistency and screening. No PCB or circuit changes are needed when substituting HZ24-2L-E for HZ24-2L in existing designs.
HZ24-2L-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:
- -
HZ24-2L-E FAQ
1.How can I place an order for HZ24-2L-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ24-2L-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 HZ24-2L-E reliable?
The price and inventory of HZ24-2L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ24-2L-E is usually 5 days.
3.What payment methods are accepted for HZ24-2L-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ24-2L-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ24-2L-E?
HZ24-2L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ24-2L-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 HZ24-2L-E?
For technical support, including HZ24-2L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ24-2L-E requirements.
6.How does Aetrix verify that HZ24-2L-E is sourced from the original manufacturer or authorized distributors?
All HZ24-2L-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 HZ24-2L-E meets industry standards.
7.What is the process for return or replacement of HZ24-2L-E?
All HZ24-2L-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ24-2L-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 HZ24-2L-E part is unused and in its original packaging.
Return procedure for HZ24-2L-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ24-2L-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…
