My Inquiry
My Account
Renesas HZ11A3LTD-E
- Part No.:
- HZ11A3LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ11A3LTD-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:75,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HZ11A3LTD-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, with a nominal zener voltage of 9.9–10.3 V, dynamic resistance of 8.0 Ω at 0.5 mA, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in regulated power supplies and sensor biasing networks.
For engineers reviewing the HZ11A3LTD-E datasheet, HZ11A3LTD-E pinout, HZ11A3LTD-E application, or HZ11A3LTD-E equivalent, this part serves as a low-noise, low-impedance voltage reference where thermal stability (−0.04 to +0.02 %/°C), tight VZ tolerance, and DO-35 package compatibility are critical selection criteria.
Technical Context
This device operates as a two-terminal, DC-biased voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its low noise level-approximately 1/3 to 1/10 that of the legacy HZ series-is achieved through optimized doping profile and passivation, enabling use in high-fidelity instrumentation front-ends.
It exhibits a zener voltage temperature coefficient ranging from −0.04 to +0.02 %/°C across its operating range, with dynamic impedance specified at 8.0 Ω under 0.5 mA test current - confirming suitability for low-drift, medium-current (<10 mA) regulation tasks where ripple rejection and thermal hysteresis matter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.9–10.3 V at IZ = 0.5 mA - defines stable reference point for feedback loops in linear regulators or ADC reference buffers. |
| Dynamic Resistance (rd) | 8.0 Ω max at IZ = 0.5 mA - ensures minimal output voltage shift under load transients in precision biasing applications. |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling. |
| Junction Temperature (Tj) | −55 to +175°C - enables deployment in industrial environments with wide ambient swings, including motor control enclosures. |
| Reverse Leakage Current (IR) | 1 μA max at VR = 2.0 V - minimizes parasitic current draw in high-impedance reference nodes and battery-powered sensors. |
| Noise Level | ≈1/3–1/10 of standard HZ series - reduces broadband voltage noise in audio preamps, strain gauge bridges, and precision DAC references. |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body color and navy-blue cathode band. Total mass ≈ 0.13 g. Dimensions: φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-impedance reference node input | Connected to regulated output or op-amp inverting input; polarity must be observed to avoid reverse conduction failure. |
| 2 (Anode) | Reference ground return path | Serves as current sink terminal; requires low-impedance connection to system ground to maintain zener stability and thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener operation | Reduces RMS voltage noise by ≥70% vs. legacy HZ series - critical for sub-10 µV noise floor requirements in medical amplifiers. |
| Tight zener voltage tolerance | ±0.2 V over 9.9–10.3 V range at 0.5 mA - enables accurate 10 V reference generation without post-calibration trimming. |
| Low dynamic impedance | 8.0 Ω max ensures <1 mV output shift per 1 mA load change - improves line regulation in discrete shunt regulator designs. |
| High thermal stability | Temperature coefficient between −0.04 and +0.02 %/°C - limits drift to ±0.25% over −40 to +85°C ambient range. |
| Robust power handling | 400 mW rating with 175°C max junction temperature - supports sustained operation in sealed enclosures without derating below 70°C ambient. |
Applications
| Industrial Power Monitoring | Precision Sensor Biasing |
|---|---|
|
Use Scenario: Real-time voltage monitoring in PLC analog input modules with 16-bit ADCs. IC Role / Device Role / Timing Role: Provides stable 10 V reference for ADC full-scale calibration and offset compensation. Use Value: Enables ±0.01% measurement accuracy over temperature due to low rd and tight VZ tolerance. |
Use Scenario: Excitation voltage source for Wheatstone bridge strain gauges in load cells. IC Role / Device Role / Timing Role: Delivers low-noise, constant-voltage excitation independent of supply rail fluctuations. Use Value: Reduces bridge output noise floor by >10 dB compared to standard Zeners, improving resolution by 1.5 effective bits. |
| Audio Signal Conditioning | Medical Instrumentation Reference |
|
Use Scenario: DC biasing network in Class-A microphone preamplifier stages. IC Role / Device Role / Timing Role: Sets quiescent operating point for JFET input stage with minimal added noise. Use Value: Contributes <0.5 nV/√Hz input-referred noise - meets IEC 61672-1 weighting filter requirements for sound level meters. |
Use Scenario: Reference voltage for isolated patient-connected ECG front-end amplifiers. IC Role / Device Role / Timing Role: Supplies stable 10 V reference to instrumentation amplifier gain-setting resistors. Use Value: Maintains <±0.02% gain error over 0–40°C patient room range, supporting FDA Class II accuracy thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5240BLT1G | Zener voltage 10 V ±5%, rd = 17 Ω, Pd = 300 mW, SOT-23 package | Smaller footprint but higher impedance and wider tolerance - suitable only where board space is constrained and noise is secondary. | Select when automated SMT assembly is required and thermal margin allows 25% lower power rating. |
| Vishay BZX55-C10 | Zener voltage 10 V ±5%, rd = 20 Ω, Pd = 500 mW, DO-35 package, higher noise | Same package but 2.5× higher dynamic resistance and no low-noise specification - acceptable for non-critical power rails. | Choose for cost-sensitive industrial controls where 10 V reference stability >0.5% is sufficient. |
Compared with MMBZ5240BLT1G and BZX55-C10, HZ11A3LTD-E delivers superior noise performance and tighter VZ control in the same DO-35 form factor, making it the preferred choice for metrology-grade analog signal chains where reference integrity directly impacts measurement validity.
Availability
HZ11A3LTD-E is available at Aetrix Electronics and suitable for industrial power monitoring, precision sensor biasing, audio signal conditioning, and medical instrumentation requiring stable component supply with traceable lot history and RoHS-compliant packaging.
Supply support for HZ11A3LTD-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 Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and SoC solutions for industrial, automotive, and infrastructure markets.
HZ11A3LTD-E belongs to the HZ-L Series of low-noise silicon planar Zener diodes, designed specifically for high-stability voltage reference applications in precision analog systems where conventional Zeners introduce unacceptable noise or drift.
FAQ
What is the zener voltage tolerance of HZ11A3LTD-E at 0.5 mA test current?
The HZ11A3LTD-E has a zener voltage range of 9.9 V to 10.3 V at IZ = 0.5 mA, corresponding to a ±0.2 V absolute tolerance. This tight specification enables direct use in 10 V reference designs without external trimming or calibration, and is confirmed in the Renesas REJ03G0182-0300 datasheet on page 2.
Does HZ11A3LTD-E meet RoHS compliance requirements?
Yes, HZ11A3LTD-E complies with the EU RoHS Directive as stated in Renesas' environmental documentation and product declarations. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is marked accordingly in Renesas' material content reports.
What is the maximum allowable ambient temperature for continuous operation of HZ11A3LTD-E at full 400 mW dissipation?
HZ11A3LTD-E achieves full 400 mW power dissipation only at Ta = 25°C. As shown in Figure 3 of the REJ03G0182-0300 datasheet, its power rating linearly derates to zero at 150°C ambient - meaning continuous 400 mW operation requires active thermal management or ambient control below 50°C in typical PCB layouts.
How does the noise performance of HZ11A3LTD-E compare to standard Zener diodes like the 1N4740A?
HZ11A3LTD-E delivers approximately 1/3 to 1/10 the broadband noise of legacy Zeners such as the 1N4740A, due to proprietary planar diffusion and surface passivation. This is explicitly quantified in the "Features" section of the Renesas HZ-L Series datasheet and validated in application note R01AN1328JJ0100.
Is HZ11A3LTD-E qualified for automotive applications per AEC-Q200?
No, HZ11A3LTD-E is not AEC-Q200 qualified. It is rated as a "Standard" quality grade device per Renesas' classification (page 1, Note 7), intended for office equipment, industrial robots, and test instrumentation - not for automotive or safety-critical systems without additional qualification and validation by the end user.
HZ11A3LTD-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:
- -
HZ11A3LTD-E FAQ
1.How can I place an order for HZ11A3LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ11A3LTD-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 HZ11A3LTD-E reliable?
The price and inventory of HZ11A3LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ11A3LTD-E is usually 5 days.
3.What payment methods are accepted for HZ11A3LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ11A3LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ11A3LTD-E?
HZ11A3LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ11A3LTD-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 HZ11A3LTD-E?
For technical support, including HZ11A3LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ11A3LTD-E requirements.
6.How does Aetrix verify that HZ11A3LTD-E is sourced from the original manufacturer or authorized distributors?
All HZ11A3LTD-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 HZ11A3LTD-E meets industry standards.
7.What is the process for return or replacement of HZ11A3LTD-E?
All HZ11A3LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ11A3LTD-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 HZ11A3LTD-E part is unused and in its original packaging.
Return procedure for HZ11A3LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ11A3LTD-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…
