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Renesas HZ9B3LTD-E
- Part No.:
- HZ9B3LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ9B3LTD-E.pdf
- Description:
- DIODE ZENER 9.3V 400MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
HZ9B3LTD-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 8.7–9.1 V, 400 mW power dissipation, and dynamic resistance of 60 Ω at 6.0 mA test current. It is used in stabilized power supplies, reference voltage sources, and noise-sensitive instrumentation where low zener impedance and reduced diode noise are critical.
For engineers reviewing the HZ9B3LTD-E datasheet, HZ9B3LTD-E pinout, HZ9B3LTD-E application, or HZ9B3LTD-E equivalent, key selection criteria include its DO-35 package compatibility, −55 to +175 °C storage temperature range, 175 °C maximum junction temperature, and verified low-noise performance relative to legacy HZ-series diodes.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a silicon planar structure. Its zener voltage is specified at 6.0 mA test current with ±0.2 V tolerance across the 8.7–9.1 V range, and exhibits a temperature coefficient of approximately −0.04 %/°C near 9 V - indicating stable regulation over ambient temperature variations.
The HZ9B3LTD-E achieves low noise via optimized semiconductor processing that reduces flicker (1/f) and thermal noise components, delivering ~1/3–1/10 the noise level of standard HZ-series diodes. Its 60 Ω dynamic resistance ensures minimal output voltage variation under load changes typical in feedback references and sensor biasing circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.7–9.1 V at IZ = 6.0 mA - defines stable regulation point for precision reference design |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 6.0 mA - ensures <1 mV output shift per 60 μA load change |
| Power Dissipation (Pd) | 400 mW at Ta = 25 °C - supports continuous operation in compact PCB layouts without forced cooling |
| Junction Temperature (Tj) | 175 °C max - enables reliable use in high-temperature industrial environments |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - minimizes parasitic current draw in high-impedance bias networks |
| Temperature Coefficient (γZ) | ≈ −0.04 %/°C - provides predictable, low-drift behavior near 9 V operating point |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body and navy-blue cathode band. Dimensions: φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm; mass ≈ 0.13 g.
| 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; layout must minimize trace inductance to preserve noise performance |
Key Features
| Feature | Design Value |
|---|---|
| Low diode noise | ~1/3–1/10 of standard HZ-series - directly improves SNR in audio preamps and ADC references |
| Stable zener impedance | 60 Ω max at 6 mA - enables tight regulation in shunt regulator topologies with varying loads |
| Wide operating temperature range | −55 to +175 °C storage, 175 °C junction limit - supports deployment in automotive under-hood and industrial control cabinets |
| Low leakage current | ≤1 μA at 2.0 V reverse bias - preserves accuracy in high-Z voltage divider and op-amp feedback networks |
| Standard DO-35 footprint | Compatible with legacy through-hole assembly and automated optical inspection (AOI) systems |
Applications
| Industrial Sensor Signal Conditioning | Audio Equipment Reference Supply |
|---|---|
Use Scenario: Precision bridge sensor excitation and offset compensation in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode providing stable 9 V reference for instrumentation amplifier bias and ADC reference buffer. Use Value: Low 60 Ω dynamic resistance and −0.04 %/°C tempco ensure <±0.5 mV drift over −40 to +85 °C operating range. |
Use Scenario: Low-noise phantom power regulation and microphone preamplifier biasing in studio-grade audio interfaces. IC Role / Device Role / Timing Role: Shunt voltage reference suppressing supply ripple and minimizing audible hiss in analog signal paths. Use Value: Diode noise reduction to 1/10 of standard HZ series directly lowers integrated noise floor below 100 μV RMS. |
| Medical Diagnostic Instrumentation | Test & Measurement Equipment |
Use Scenario: Calibration voltage source in portable ECG front-end amplifiers requiring long-term stability and low drift. IC Role / Device Role / Timing Role: Primary voltage reference for gain-setting DACs and analog multiplexer bias networks. Use Value: 1 μA max reverse leakage prevents loading errors in high-impedance electrode sensing circuits. |
Use Scenario: Stable reference generation in handheld multimeters and portable oscilloscope auxiliary supplies. IC Role / Device Role / Timing Role: Zener-based shunt regulator feeding precision voltage references (e.g., REF50xx) and analog switches. Use Value: 400 mW power rating allows direct operation from unregulated 12 V rails without external series resistor derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4739A (ON Semiconductor) | Zener voltage 9.1 V ±5%, rd = 10 Ω typical (but higher noise), Pd = 1 W, DO-41 package | Higher power handling but larger footprint; noise not characterized for low-noise apps | Prefer when higher power margin is needed and board space permits DO-41; verify noise spec separately |
| BZX55-C9V1 (Vishay) | Zener voltage 9.1 V ±5%, rd = 70 Ω max, Pd = 500 mW, DO-35 package, no low-noise characterization | Same package but lacks documented noise reduction vs. HZ-L series | Acceptable for general regulation where noise is non-critical; not recommended for audio or precision ADC references |
Compared with 1N4739A and BZX55-C9V1, the HZ9B3LTD-E offers uniquely validated low-noise performance and tighter dynamic resistance control in the DO-35 form factor - making it the preferred choice for applications where signal integrity and reference stability are design-critical.
Availability
HZ9B3LTD-E is available at Aetrix Electronics and suitable for industrial sensor conditioning, audio reference supplies, medical diagnostic instrumentation, and test & measurement equipment requiring stable component supply with full traceability and lifecycle support.
Supply support for HZ9B3LTD-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 connectivity solutions for industrial, automotive, and enterprise applications.
The HZ-L Series was developed by Renesas specifically for low-noise, high-stability voltage reference applications in precision analog systems - addressing limitations in noise and impedance found in earlier HZ-series Zener diodes.
FAQ
What is the exact zener voltage range for HZ9B3LTD-E?
The HZ9B3LTD-E has a guaranteed zener voltage range of 8.7 V to 9.1 V when tested at 6.0 mA DC current and 25 °C ambient temperature. This specification is confirmed in the official Renesas REJ03G0182-0300 datasheet, page 2, Electrical Characteristics table. The HZ9B3LTD-E is part of the HZ-L family designed for tighter voltage tolerance and lower noise than standard HZ diodes.
Is HZ9B3LTD-E RoHS compliant?
Yes, the HZ9B3LTD-E meets EU RoHS Directive requirements. Renesas confirms environmental compliance for the HZ-L Series in accordance with applicable regulations, including restriction of hazardous substances. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and this applies to the HZ9B3LTD-E as a member of the qualified HZ-L family.
What is the maximum junction temperature rating for HZ9B3LTD-E?
The HZ9B3LTD-E has a maximum junction temperature (Tj) rating of 175 °C, as specified in the Absolute Maximum Ratings table on page 2 of the Renesas REJ03G0182-0300 datasheet. This allows reliable operation in high-temperature industrial environments, provided power dissipation remains within the derated limits defined in Figure 3 (Power Dissipation vs. Ambient Temperature).
Does HZ9B3LTD-E have a documented noise specification?
Yes - the HZ9B3LTD-E is explicitly characterized for low noise in the HZ-L Series datasheet: its diode noise level is stated as "approximately 1/3–1/10 lower than the HZ series." While absolute nV/√Hz values are not tabulated, this comparative metric is confirmed in the Features section (page 1) and forms the core differentiator of the HZ-L family, including the HZ9B3LTD-E.
What package type does HZ9B3LTD-E use, and is it compatible with standard DO-35 footprints?
The HZ9B3LTD-E uses the DO-35 package (JEITA code GRZZ0002ZB-A), with dimensions matching industry-standard DO-35: 2.0 mm diameter, 26.0 mm length, and 4.2 mm lead spacing. Its orange body and navy-blue cathode band follow JEDEC-compliant marking. The HZ9B3LTD-E is fully compatible with existing DO-35 land patterns and through-hole assembly processes.
HZ9B3LTD-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.3 V
- Tolerance:
- ±2.15%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ9B3LTD-E FAQ
1.How can I place an order for HZ9B3LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ9B3LTD-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 HZ9B3LTD-E reliable?
The price and inventory of HZ9B3LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ9B3LTD-E is usually 5 days.
3.What payment methods are accepted for HZ9B3LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ9B3LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ9B3LTD-E?
HZ9B3LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ9B3LTD-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 HZ9B3LTD-E?
For technical support, including HZ9B3LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ9B3LTD-E requirements.
6.How does Aetrix verify that HZ9B3LTD-E is sourced from the original manufacturer or authorized distributors?
All HZ9B3LTD-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 HZ9B3LTD-E meets industry standards.
7.What is the process for return or replacement of HZ9B3LTD-E?
All HZ9B3LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ9B3LTD-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 HZ9B3LTD-E part is unused and in its original packaging.
Return procedure for HZ9B3LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ9B3LTD-E Tags
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