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Renesas HZS12B1LTA-E
- Part No.:
- HZS12B1LTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS12B1LTA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:25,000
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Product details
Overview
HZS12B1LTA-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 12.4–12.9 V, 400 mW power dissipation, and dynamic resistance of 80 Ω at 0.5 mA test current - deployed in stabilized power supplies, reference voltage sources, and sensor signal conditioning.
For engineers reviewing the HZS12B1LTA-E datasheet, HZS12B1LTA-E pinout, HZS12B1LTA-E application, or HZS12B1LTA-E equivalent, this part delivers verified low-noise performance (≈1/3–1/10 lower than HZ series), tight zener voltage tolerance, and compatibility with 5 mm-pitch high-speed automatic insertion - critical for industrial instrumentation and telecom power management design.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage across variable load and input conditions via controlled reverse-bias breakdown. Its planar junction construction ensures low leakage current (≤1 μA at VR = 10.5 V) and predictable temperature coefficient behavior.
The HZS12B1LTA-E exhibits a zener voltage temperature coefficient near zero (±0.02 %/°C typical at ~12.6 V), enabling minimal drift over ambient temperature ranges. It is rated for junction temperatures up to 200°C and storage from −55°C to +175°C, supporting operation in thermally demanding environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.4 V (min) to 12.9 V (max) at IZ = 0.5 mA - defines precise regulation threshold for feedback loops and references. |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - determines output impedance and noise rejection capability in regulated rails. |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous thermal load without derating; requires PCB copper area for heat spreading. |
| Reverse Leakage (IR) | ≤1 μA at VR = 10.5 V - ensures minimal error current in high-impedance bias networks and precision references. |
| Junction Temperature (Tj) | 200°C max - enables reliable operation in enclosed enclosures or near heat-generating components. |
| Package Type | MHD (JEITA GRZZ0002ZC-A) - axial-leaded, 2.0 mm diameter glass body with black cathode band, compatible with 5 mm pitch auto-insertion. |
Pinout & Package
Package: MHD - axial-leaded, glass-encapsulated, 2.0 mm diameter × 26.0 mm length, mass ≈ 0.084 g, JEITA code GRZZ0002ZC-A, Renesas code MHD/MHDV.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-bias terminal | Connected to regulated output node; polarity must be observed to ensure proper breakdown conduction. |
| 2 (Anode) | Reference/ground terminal | Typically tied to system ground or common return; establishes reference potential for zener voltage drop. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Noise level ≈1/3–1/10 that of legacy HZ series - directly improves SNR in ADC references and op-amp biasing. |
| Tight zener voltage tolerance | ±0.25 V window (12.4–12.9 V) at 0.5 mA - reduces calibration overhead in factory-trimmed analog subsystems. |
| Low dynamic impedance | 80 Ω max - maintains regulation accuracy under varying load currents up to 10 mA. |
| High thermal robustness | 200°C max junction temperature - supports use in automotive engine-control modules and industrial PLC power stages. |
| Automated assembly compatibility | 5 mm pitch axial lead spacing - enables direct integration into high-volume SMT-compatible through-hole insertion lines. |
Applications
| Industrial Power Monitoring | Telecom DC-DC Reference |
|---|---|
|
Use Scenario: Real-time voltage supervision in programmable logic controller (PLC) backplane power rails. IC Role / Device Role / Timing Role: Shunt voltage reference for comparator-based overvoltage detection circuitry. Use Value: Low dynamic resistance (80 Ω) ensures fast response to transient overvoltage events without reference droop. |
Use Scenario: Precision 12 V reference in isolated telecom DC-DC converter feedback loop. IC Role / Device Role / Timing Role: Zener-based secondary-side voltage sensing element stabilizing output regulation. Use Value: Tight VZ tolerance (12.4–12.9 V) minimizes output voltage variation across production units. |
| Medical Sensor Signal Conditioning | Test Equipment Bias Supply |
|
Use Scenario: Low-drift bias source for bridge amplifier front-ends in portable ECG monitors. IC Role / Device Role / Timing Role: Low-noise voltage reference for op-amp offset nulling and gain-setting networks. Use Value: Ultra-low diode noise (vs. HZ series) preserves microvolt-level signal integrity in biopotential amplification. |
Use Scenario: Stable excitation voltage for precision resistor measurement in benchtop LCR meters. IC Role / Device Role / Timing Role: Fixed-voltage source powering Kelvin-sense circuitry and reference dividers. Use Value: ≤1 μA leakage ensures negligible error current in high-impedance measurement paths (>10 MΩ). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A (ON Semiconductor) | Zener voltage 12 V ±5% (11.4–12.6 V); rd = 9 Ω typical; Pd = 1 W; DO-41 package. | Higher power rating but wider VZ tolerance and higher noise vs. HZS12B1LTA-E. | Prefer when thermal headroom >400 mW is required and tighter VZ tolerance is not critical. |
| BZX85C12 (Nexperia) | Zener voltage 12 V ±5%; rd = 25 Ω typical; Pd = 1.3 W; DO-41; higher leakage (≤5 μA). | Lower dynamic impedance but significantly higher leakage and noise than HZS12B1LTA-E. | Choose for cost-sensitive, non-precision applications where 1.3 W dissipation is needed and noise is secondary. |
Compared with 1N4742A and BZX85C12, the HZS12B1LTA-E provides superior noise performance and tighter VZ control at 400 mW - making it optimal for low-drift analog references where signal integrity outweighs raw power handling.
Availability
HZS12B1LTA-E is available at Aetrix Electronics and suitable for industrial power monitoring, telecom DC-DC reference design, and medical sensor signal conditioning requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for HZS12B1LTA-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.
The HZS-L Series is part of Renesas' precision analog portfolio, designed specifically for low-noise, stable voltage reference applications in instrumentation, telecom, and medical electronics where regulation accuracy and signal fidelity are critical.
FAQ
What is the zener voltage range of the HZS12B1LTA-E?
The HZS12B1LTA-E has a specified zener voltage range of 12.4 V (minimum) to 12.9 V (maximum) at a test current of 0.5 mA. This narrow 0.5 V window ensures consistent regulation performance across production lots and supports high-accuracy voltage reference designs without post-manufacturing trimming. The value is measured under DC conditions per Renesas specification REJ03G0166-0300 Rev.3.00.
Does the HZS12B1LTA-E support automated PCB assembly?
Yes, the HZS12B1LTA-E uses the MHD package with standardized 5 mm axial lead pitch, explicitly qualified for high-speed automatic insertion equipment. Its glass-body construction and black cathode band enable optical recognition and mechanical alignment during placement. This makes HZS12B1LTA-E suitable for high-volume manufacturing of industrial control and telecom hardware.
How does the noise performance of HZS12B1LTA-E compare to standard Zener diodes?
The HZS12B1LTA-E delivers approximately 1/3 to 1/10 the noise level of the legacy HZ series Zener diodes, as confirmed in Renesas' characterization data. This ultra-low-noise behavior stems from its silicon planar junction process and optimized doping profile - directly improving signal-to-noise ratio in precision analog circuits such as sensor front-ends and ADC reference buffers using HZS12B1LTA-E.
What is the maximum power dissipation rating for HZS12B1LTA-E?
The HZS12B1LTA-E is rated for 400 mW maximum power dissipation at an ambient temperature of 25°C. Derating is required above 25°C per the published curve in Figure 3 of REJ03G0166-0300 - e.g., ~200 mW at 70°C ambient. Adequate PCB copper area (e.g., ≥1 cm² per lead) is recommended to maintain safe junction temperature within the 200°C limit during continuous operation.
Is HZS12B1LTA-E suitable for automotive applications?
The HZS12B1LTA-E is classified as a "Standard" quality grade device per Renesas' product grading system, intended for industrial, office, and communications equipment - not for automotive or safety-critical systems. It lacks AEC-Q200 qualification and is not recommended for under-hood or chassis-control applications. For automotive use, consult Renesas' dedicated AEC-Q200-qualified Zener families instead of HZS12B1LTA-E.
HZS12B1LTA-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:
- -
HZS12B1LTA-E FAQ
1.How can I place an order for HZS12B1LTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS12B1LTA-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 HZS12B1LTA-E reliable?
The price and inventory of HZS12B1LTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS12B1LTA-E is usually 5 days.
3.What payment methods are accepted for HZS12B1LTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS12B1LTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS12B1LTA-E?
HZS12B1LTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS12B1LTA-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 HZS12B1LTA-E?
For technical support, including HZS12B1LTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS12B1LTA-E requirements.
6.How does Aetrix verify that HZS12B1LTA-E is sourced from the original manufacturer or authorized distributors?
All HZS12B1LTA-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 HZS12B1LTA-E meets industry standards.
7.What is the process for return or replacement of HZS12B1LTA-E?
All HZS12B1LTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS12B1LTA-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 HZS12B1LTA-E part is unused and in its original packaging.
Return procedure for HZS12B1LTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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