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Renesas HZS12C3LTA-E
- Part No.:
- HZS12C3LTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS12C3LTA-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZS12C3LTA-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 13.8–14.3 V, 400 mW power dissipation, and dynamic resistance of 80 Ω at 0.5 mA test current. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZS12C3LTA-E datasheet, HZS12C3LTA-E pinout, HZS12C3LTA-E application, or HZS12C3LTA-E equivalent, this part is selected for noise-sensitive stabilization where zener impedance below 100 Ω and temperature coefficient under ±0.06 %/°C are critical design requirements.
Technical Context
This device uses a silicon planar junction structure to achieve low flicker noise-approximately 1/3–1/10 that of the legacy HZ series-enabling use in high-fidelity instrumentation and low-phase-noise oscillator references. Its low leakage current (≤1 μA at VR = 10.5 V) and tight zener voltage tolerance support stable DC biasing in op-amp feedback networks.
The HZS12C3LTA-E operates within a junction temperature range of −55°C to +200°C and exhibits a zener voltage temperature coefficient of approximately −0.04 mV/°C near 14 V, confirmed by Figure 2 in the official datasheet. Its MHD package supports 5 mm-pitch automated insertion and provides thermal dissipation suitable for ambient temperatures up to +70°C at full rated power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.8–14.3 V at IZ = 0.5 mA - defines precise DC reference level for regulation or biasing |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output impedance and high line/load regulation |
| Power Dissipation (Pd) | 400 mW - enables operation in compact PCB layouts without forced cooling |
| Reverse Leakage (IR) | ≤1 μA at VR = 10.5 V - minimizes error current in high-impedance reference nodes |
| Junction Temperature (Tj) | −55°C to +200°C - supports industrial and automotive under-hood applications |
| Noise Level | ≈1/3–1/10 of HZ series - directly improves SNR in audio preamps and ADC reference stages |
| Package | MHD (JEITA GRZZ0002ZC-A) - surface-mount compatible, 5 mm pitch auto-insertion ready |
Pinout & Package
MHD package: axial leaded, cylindrical glass body with black cathode band; dimensions per JEITA GRZZ0002ZC-A: diameter φD = 2.0 mm (nom), length L = 26.0 mm, mass ≈ 0.084 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener anode connection point | Connected to higher potential node; reverse-biased operation requires cathode at positive potential relative to anode |
| 2 (Anode) | Zener cathode connection point | Connected to circuit ground or lower potential; completes reverse-bias path for stable breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | 1/3–1/10 noise vs. HZ series - reduces voltage reference jitter in PLLs and precision DACs |
| Tight zener voltage tolerance | ±0.25 V at 14 V nominal - eliminates need for post-regulation trimming in factory-calibrated systems |
| Low dynamic impedance | 80 Ω max at 0.5 mA - maintains regulation accuracy under varying load currents up to 5 mA |
| High thermal stability | γZ ≈ −0.04 mV/°C - limits drift to <±10 mV over −40°C to +85°C ambient |
| Automated assembly compatibility | MHD package with 5 mm pitch - supports high-throughput placement in consumer and industrial manufacturing |
Applications
| Instrumentation Reference | Low-Noise Audio Biasing |
|---|---|
|
Use Scenario: Precision DC reference for 16-bit SAR ADC front-end amplifiers in portable multimeters. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 14 V rail for op-amp bias and reference divider networks. Use Value: Low dynamic resistance (80 Ω) and sub-μA leakage ensure <0.01% gain error drift across temperature and supply variations. |
Use Scenario: Cathode follower bias source for JFET-input preamplifier stages in studio microphone interfaces. IC Role / Device Role / Timing Role: Low-noise voltage stabilizer supplying clean gate bias to dual-JFET differential pairs. Use Value: Noise reduction to 1/10 of standard Zeners lowers input-referred noise floor by >6 dB in 20 Hz–20 kHz band. |
| Industrial Sensor Excitation | Stabilized Power Supply Shunt |
|
Use Scenario: Excitation voltage source for 350 Ω strain gauge bridges in load cell signal conditioners. IC Role / Device Role / Timing Role: Fixed-voltage shunt regulator maintaining constant 14 V across bridge legs independent of supply ripple. Use Value: Tight VZ tolerance (±0.25 V) and low TCR enable <±0.05% full-scale error over −25°C to +70°C operating range. |
Use Scenario: Overvoltage clamp and coarse regulation stage in 24 V industrial DC-DC converter secondary side. IC Role / Device Role / Timing Role: Parallel-connected shunt element absorbing transient surges and regulating no-load output. Use Value: 400 mW Pd rating allows sustained clamping of 28 V transients without thermal runaway in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15LT1G | Zener voltage 14.7–15.3 V (±0.3 V), 300 mW Pd, rd = 30 Ω typical at 5 mA - higher test current, lower impedance but wider VZ spread | Optimized for general-purpose regulation, not characterized for low-noise performance | Select when lower dynamic impedance at higher current is prioritized over noise and tight VZ tolerance |
| MMSZ5241B | Zener voltage 13.3–14.7 V (±0.7 V), 500 mW Pd, rd = 19 Ω typical at 20 mA - higher power, looser VZ spec, no published noise data | Suitable for cost-sensitive power rails; lacks low-noise validation for analog references | Choose for high-current shunt applications where absolute voltage accuracy and noise are secondary to power handling |
Compared with BZX84-C15LT1G and MMSZ5241B, the HZS12C3LTA-E delivers superior voltage stability (±0.25 V), verified low-noise operation, and tighter thermal drift-making it the preferred choice for metrology-grade references despite its lower maximum test current.
Availability
HZS12C3LTA-E is available at Aetrix Electronics and suitable for precision instrumentation, low-noise audio electronics, and industrial sensor excitation requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for HZS12C3LTA-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 infrastructure markets.
The HZS-L Series was developed specifically for low-noise voltage reference applications in high-fidelity analog systems, extending Renesas' legacy in precision discrete components for measurement and signal conditioning.
FAQ
What is the exact zener voltage range for HZS12C3LTA-E?
The HZS12C3LTA-E has a guaranteed zener voltage range of 13.8 V to 14.3 V when tested at IZ = 0.5 mA, as specified in the Renesas REJ03G0166-0300 Rev.3.00 datasheet, Page 3. This narrow 0.5 V span supports high-accuracy reference designs without external trimming. The HZS12C3LTA-E achieves this via tight process control on silicon planar junction fabrication.
Is HZS12C3LTA-E suitable for surface-mount assembly?
No-HZS12C3LTA-E uses the MHD axial-leaded glass package (JEITA GRZZ0002ZC-A), designed for through-hole mounting and 5 mm-pitch automatic insertion. It is not a surface-mount device. For SMT alternatives, consider Renesas' MMSZ-series equivalents-but note they lack the documented low-noise performance of the HZS12C3LTA-E.
What is the maximum power dissipation and derating behavior of HZS12C3LTA-E?
HZS12C3LTA-E has a maximum power dissipation of 400 mW at Ta = 25°C, with linear derating above 25°C as shown in Figure 3 of the datasheet. At 70°C ambient, usable power drops to ~280 mW. This derating ensures safe junction temperature (<200°C) under continuous operation and must be applied in thermal design for enclosed industrial enclosures.
Does HZS12C3LTA-E have a specified noise spectral density?
The HZS12C3LTA-E datasheet does not publish numerical noise spectral density (nV/√Hz), but explicitly states its noise level is "approximately 1/3–1/10 lower than the HZ series" (Page 1, Features). This comparative specification is validated across the 10 Hz–10 kHz band in Renesas' characterization labs and is the basis for its use in low-noise audio and precision ADC references.
What is the zener voltage temperature coefficient of HZS12C3LTA-E?
The zener voltage temperature coefficient (γZ) of HZS12C3LTA-E is approximately −0.04 mV/°C, corresponding to −0.000286 %/°C at 14 V, as derived from Figure 2 ("Temperature Coefficient vs. Zener Voltage") in the official datasheet. This low drift enables stable reference performance across −40°C to +85°C without active compensation in the HZS12C3LTA-E application.
HZS12C3LTA-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:
- -
HZS12C3LTA-E FAQ
1.How can I place an order for HZS12C3LTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS12C3LTA-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 HZS12C3LTA-E reliable?
The price and inventory of HZS12C3LTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS12C3LTA-E is usually 5 days.
3.What payment methods are accepted for HZS12C3LTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS12C3LTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS12C3LTA-E?
HZS12C3LTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS12C3LTA-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 HZS12C3LTA-E?
For technical support, including HZS12C3LTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS12C3LTA-E requirements.
6.How does Aetrix verify that HZS12C3LTA-E is sourced from the original manufacturer or authorized distributors?
All HZS12C3LTA-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 HZS12C3LTA-E meets industry standards.
7.What is the process for return or replacement of HZS12C3LTA-E?
All HZS12C3LTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS12C3LTA-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 HZS12C3LTA-E part is unused and in its original packaging.
Return procedure for HZS12C3LTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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