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Renesas HZS7A2LTD-E
- Part No.:
- HZS7A2LTD-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZS7A2LTD-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
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Inventory:50,000
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Product details
Overview
HZS7A2LTD-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, featuring a nominal zener voltage of 6.55 V (min 6.4 V / max 6.7 V), dynamic resistance of 60 Ω at 3.5 mA, and maximum power dissipation of 400 mW. It is designed for use in stabilized power supplies, sensor signal conditioning, and instrumentation where low noise and tight voltage tolerance are critical.
For engineers reviewing the HZS7A2LTD-E datasheet, HZS7A2LTD-E pinout, HZS7A2LTD-E application, or HZS7A2LTD-E equivalent, key selection criteria include its 60 Ω zener impedance at 3.5 mA, −55°C to +175°C storage temperature range, 200°C junction temperature rating, and suitability for 5 mm-pitch high-speed automatic insertion in industrial and test equipment PCB assembly.
Technical Context
This device operates as a two-terminal voltage reference using silicon planar Zener breakdown, with low leakage current (<1 μA at VR = 2.0 V) and tightly controlled zener voltage tolerance (±0.15 V at 25°C). Its noise level is approximately 1/3–1/10 that of the legacy HZ series, achieved through optimized doping and junction geometry.
The HZS7A2LTD-E is rated for 400 mW power dissipation at 25°C ambient, derating linearly above 25°C per Fig.3 in the datasheet, and maintains stable regulation across a wide operating temperature range due to its specified zener voltage temperature coefficient of approximately −0.02 mV/°C near 6.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V min / 6.7 V max at IZ = 0.5 mA - ensures precise 6.55 V nominal reference with ±0.15 V tolerance for stable biasing. |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 3.5 mA - enables low-output-impedance regulation critical for noise-sensitive analog stages. |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports compact board layouts without forced cooling in moderate-power references. |
| Junction Temperature (Tj) | 200°C max - allows reliable operation in high-ambient industrial environments when thermally managed. |
| Storage Temperature (Tstg) | −55°C to +175°C - compatible with extended-range automotive and industrial reflow, storage, and field deployment. |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - minimizes parasitic current draw in high-impedance reference nodes. |
Pinout & Package
Package: MHD (JEITA code GRZZ0002ZC-A), axial-leaded, 2.0 mm diameter, 26.0 mm body length, 5 mm pitch - optimized for high-speed automatic insertion and wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener cathode terminal | Connected to higher potential node; black band identifies this terminal for correct polarity in reverse-bias operation. |
| 2 (Anode) | Zener anode terminal | Connected to lower potential (typically ground or return); completes reverse-biased conduction path for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Diode noise ~1/3–1/10 of HZ series - directly improves SNR in precision ADC references and op-amp feedback networks. |
| Tight VZ tolerance | ±0.15 V at 25°C - reduces need for post-calibration trimming in factory-set voltage references. |
| Low dynamic impedance | 60 Ω at 3.5 mA - maintains regulation stability under varying load currents up to ~10 mA. |
| High thermal robustness | 200°C max junction temperature - supports operation in enclosed enclosures or near heat-generating components. |
| Automated assembly compatibility | 5 mm pitch, MHD package - enables direct integration into high-volume SMT-compatible through-hole production lines. |
Applications
| Industrial Power Monitoring | Medical Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Real-time monitoring of 24 V DC bus voltage in PLC backplanes with ±0.5% accuracy requirement. IC Role / Device Role / Timing Role: Primary voltage reference for 12-bit SAR ADC input scaling and overvoltage comparator threshold. Use Value: 60 Ω dynamic resistance ensures <0.3% line regulation error across 1–5 mA load variation, meeting IEC 61000-4-30 Class A compliance. |
Use Scenario: Biasing photodiode transimpedance amplifier in portable pulse oximeter front-end. IC Role / Device Role / Timing Role: Low-noise 6.55 V reference for op-amp offset nulling and gain-setting resistor network. Use Value: Ultra-low noise performance suppresses baseline drift below 1 µVpp in 0.1–10 Hz band, enabling SpO₂ resolution ≤0.5%. |
| Test Equipment Reference Supply | Automotive ECU Diagnostic Interface |
|
Use Scenario: Stable 6.5 V rail generation for DMM analog front-end ICs requiring sub-10 ppm/°C drift. IC Role / Device Role / Timing Role: Precision shunt reference feeding DAC output buffer and multiplexer bias rails. Use Value: −0.02 mV/°C tempco yields <±0.12 mV drift over −25°C to +75°C, eliminating recalibration during bench warm-up. |
Use Scenario: ISO 9141-2/K-line diagnostic voltage clamp in engine control unit interface circuitry. IC Role / Device Role / Timing Role: Overvoltage protection and level-shifting reference for bidirectional K-line driver/receiver. Use Value: 400 mW power rating withstands 12 V battery transients up to 200 ms, meeting ISO 7637-2 Pulse 1/2 immunity requirements. |
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 |
|---|---|---|---|
| BZX84-C6V2 (Nexperia) | 6.2 V nominal, 80 Ω rd, SOT-23 package, 300 mW Pd | SMT-only; higher impedance limits low-current regulation accuracy | Preferred for space-constrained PCBs where 0.35 V lower VZ and surface-mount assembly are acceptable. |
| 1N4735A (ON Semiconductor) | 6.2 V nominal, 5 Ω rd, DO-41 package, 1 W Pd | Higher power, lower impedance, but 3× higher noise than HZS7A2LTD-E | Chosen when ultra-low impedance dominates over noise floor, e.g., high-current shunt regulator with >20 mA IZ. |
Compared with BZX84-C6V2 and 1N4735A, the HZS7A2LTD-E uniquely balances ultra-low noise, tight VZ tolerance, and axial-leaded manufacturability-making it optimal for mid-volume industrial instrumentation where noise and calibration stability outweigh raw power handling or footprint size.
Availability
HZS7A2LTD-E is available at Aetrix Electronics and suitable for industrial power monitoring, medical sensor signal conditioning, test equipment reference supply, and automotive ECU diagnostic interface applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for HZS7A2LTD-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 delivering microcontrollers, analog power, and SoC solutions for industrial, automotive, and infrastructure markets.
The HZS-L Series was developed by Renesas specifically for low-noise, high-stability voltage reference applications in precision analog systems-addressing demand for tighter VZ tolerance and reduced broadband noise versus legacy Zener families.
FAQ
What is the nominal zener voltage of the HZS7A2LTD-E?
The HZS7A2LTD-E has a nominal zener voltage of 6.55 V, with a guaranteed range of 6.4 V to 6.7 V at 0.5 mA test current. This tight tolerance supports accurate voltage referencing in analog circuits without external trimming, and the value is confirmed in the Renesas REJ03G0166-0300 datasheet, Page 2.
Does the HZS7A2LTD-E support high-temperature operation?
Yes, the HZS7A2LTD-E is rated for a maximum junction temperature of 200°C and storage temperature from −55°C to +175°C. Its thermal performance enables reliable use in enclosed industrial enclosures or near heat-generating components, provided PCB copper area and airflow meet Renesas' derating curve in Fig.3 of the HZS-L Series datasheet.
What is the dynamic resistance specification for the HZS7A2LTD-E?
The HZS7A2LTD-E exhibits a maximum dynamic resistance of 60 Ω at 3.5 mA zener current, measured at 25°C. This low impedance ensures stable regulation under varying load conditions and is critical for minimizing output voltage deviation in precision reference applications.
Is the HZS7A2LTD-E suitable for automated PCB assembly?
Yes, the HZS7A2LTD-E uses the MHD axial package (JEITA code GRZZ0002ZC-A) with 5 mm lead pitch, explicitly designed for high-speed automatic insertion. Its mechanical dimensions and lead form comply with IPC-7351 standards for through-hole placement and wave soldering in volume manufacturing.
How does the noise performance of the HZS7A2LTD-E compare to standard Zener diodes?
The HZS7A2LTD-E delivers approximately 1/3 to 1/10 the noise level of the legacy HZ series Zener diodes, achieved via optimized planar junction fabrication. This makes it especially valuable in low-frequency precision applications such as medical sensor front-ends and high-resolution data acquisition systems where reference noise directly impacts measurement fidelity.
HZS7A2LTD-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:
- -
HZS7A2LTD-E FAQ
1.How can I place an order for HZS7A2LTD-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZS7A2LTD-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 HZS7A2LTD-E reliable?
The price and inventory of HZS7A2LTD-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7A2LTD-E is usually 5 days.
3.What payment methods are accepted for HZS7A2LTD-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7A2LTD-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZS7A2LTD-E?
HZS7A2LTD-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZS7A2LTD-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 HZS7A2LTD-E?
For technical support, including HZS7A2LTD-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7A2LTD-E requirements.
6.How does Aetrix verify that HZS7A2LTD-E is sourced from the original manufacturer or authorized distributors?
All HZS7A2LTD-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 HZS7A2LTD-E meets industry standards.
7.What is the process for return or replacement of HZS7A2LTD-E?
All HZS7A2LTD-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7A2LTD-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 HZS7A2LTD-E part is unused and in its original packaging.
Return procedure for HZS7A2LTD-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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