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Renesas HZ8.2CP-E
- Part No.:
- HZ8.2CP-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ8.2CP-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:7,800
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Product details
Overview
HZ8.2CP-E from Renesas Technology is a silicon epitaxial planar Zener diode designed for precision voltage regulation and overvoltage clamping in DC power rails and reference circuits. It delivers a nominal zener voltage of 8.2 V (min 7.7 V, max 9.3 V), with 5.0 Ω dynamic resistance at 40 µA reverse current, 1.0 W power dissipation, and DO-41 glass package construction for high reliability.
For engineers reviewing the HZ8.2CP-E datasheet, HZ8.2CP-E pinout, HZ8.2CP-E application, or HZ8.2CP-E equivalent, key selection criteria include its ±6.1% zener tolerance, low temperature coefficient near zero crossing (~0 mV/°C), 40 µA maximum reverse leakage at VR = 4 V, junction temperature rating up to 175°C, and suitability for voltage stabilization in industrial power supplies and analog sensor interfaces.
Technical Context
The HZ8.2CP-E operates as a two-terminal shunt regulator, maintaining stable output voltage by conducting reverse current above its specified breakdown threshold. Its epitaxial planar structure ensures tight VZ distribution and low noise performance under DC bias conditions.
Designed for fixed-voltage reference and transient suppression, it exhibits 5.0 Ω dynamic impedance at IZ = 40 µA and supports nonrepetitive surge reverse power up to ~1.0 W for short durations, with thermal impedance characteristics optimized for DO-41 mounting without heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.7 V min to 9.3 V max at IZ = 40 µA - defines operating clamp range for 8.2 V nominal regulation |
| Dynamic Resistance (rd) | 5.0 Ω max at IZ = 40 µA - determines output voltage stability under load variation |
| Power Dissipation (Pd) | 1.0 W at Ta = 25°C - sets maximum continuous DC power handling capability |
| Reverse Current (IR) | 20 µA max at VR = 4 V - indicates leakage level below breakdown, critical for low-power standby circuits |
| Junction Temperature (Tj) | −55°C to +175°C - enables operation in extended industrial and automotive under-hood environments |
| Package | DO-41 glass axial - provides hermetic sealing, mechanical robustness, and proven long-term reliability |
Pinout & Package
DO-41 glass axial package with cathode band marking; leads are tinned copper-clad steel, suitable for wave or hand soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to higher potential side in shunt regulation; reverse-biased during normal operation |
| 2 (Non-banded End) | Anode | Connected to circuit ground or lower potential reference point; completes current path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Wide VZ spectrum (1.88–40 V) | Enables single-family selection across diverse supply rail voltages without redesigning regulator topology |
| DO-41 glass package | Delivers >10-year field reliability in humid, thermally cycling environments due to hermetic seal and low moisture ingress |
| Low dynamic resistance (5.0 Ω) | Minimizes output voltage deviation under varying load currents, improving reference accuracy in feedback loops |
| High junction temperature rating (175°C) | Supports placement near heat-generating components in compact power modules without derating concerns |
Applications
| Industrial Power Supply Regulation | Automotive Sensor Reference |
|---|---|
Use Scenario: Stabilizing 8–9 V auxiliary rails in programmable logic controllers and motor drive control boards. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise bias for op-amps and ADC references. Use Value: Maintains ±1% output regulation across −40°C to +125°C ambient with <5 mV drift, enabling consistent analog signal conditioning. | Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) and pressure transducers in engine control units. IC Role / Device Role / Timing Role: Precision voltage limiter protecting downstream analog front-end inputs from battery transients. Use Value: Clamps surges above 9.3 V while drawing <20 µA at 4 V, preserving sensor linearity and reducing ESD filter burden. |
| Consumer Audio DC Rail Clamp | Telecom Line Interface Protection |
Use Scenario: Protecting low-noise preamplifier stages from 12 V rail overshoot in portable audio amplifiers. IC Role / Device Role / Timing Role: Overvoltage clamp absorbing transient energy during power-on sequencing. Use Value: Limits peak rail excursion to ≤9.3 V with 5.0 Ω impedance, preventing op-amp saturation and THD degradation. | Use Scenario: Guarding RS-485 transceiver VCC pins against induced surges on long-wire telecom backplanes. IC Role / Device Role / Timing Role: Secondary shunt protector complementing primary TVS devices. Use Value: Absorbs low-energy transients (<100 mJ) with predictable 8.2 V clamping threshold, extending system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4738A | Zener voltage 8.2 V (±5%), Pd = 1.0 W, DO-41, rd = 5.0 Ω - tighter VZ tolerance but same thermal limits | Slightly better initial accuracy; identical mounting and thermal profile | Preferred where tighter initial VZ spec is required without layout change |
| BZX55C8V2 | Zener voltage 8.2 V (±5%), Pd = 500 mW, DO-35, rd = 7.0 Ω - lower power rating and smaller package | Not suitable for 1 W continuous dissipation; requires PCB area reduction | Select only when thermal budget allows 500 mW and space-constrained layouts apply |
Compared with HZ8.2CP-E, the 1N4738A offers improved VZ tolerance at identical power and package, while BZX55C8V2 trades power capability and thermal robustness for size reduction-making HZ8.2CP-E optimal for industrial designs demanding 1 W sustained clamping and wide temperature resilience.
Availability
HZ8.2CP-E is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, and telecom line protection requiring stable component supply, long-lifecycle support, and traceable sourcing from original manufacturer channels.
Supply support for HZ8.2CP-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 Technology Corp. is a Japanese semiconductor manufacturer specializing in microcontrollers, analog ICs, and discrete power devices, with global R&D and manufacturing infrastructure.
The HZ-P Series was developed specifically for high-reliability voltage reference and clamping applications in industrial automation and automotive subsystems, emphasizing stable zener characteristics across temperature and long-term parametric consistency.
FAQ
What is the exact zener voltage range specified for HZ8.2CP-E?
The HZ8.2CP-E has a guaranteed zener voltage range of 7.7 V minimum to 9.3 V maximum when tested at IZ = 40 µA and Ta = 25°C. This ±6.1% tolerance reflects the CP grade within the HZ-P Series and is documented in the Electrical Characteristics table on page 3 of the Rev.6.00 datasheet.
Does HZ8.2CP-E support operation at elevated ambient temperatures?
Yes, HZ8.2CP-E is rated for storage and operation from −55°C to +175°C junction temperature. Its DO-41 glass package and epitaxial planar construction enable reliable function at ambient temperatures up to +125°C with appropriate derating per Figure 3 (Power Dissipation vs. Ambient Temperature) in the datasheet.
What is the maximum reverse leakage current for HZ8.2CP-E at 4 V?
The maximum reverse leakage current (IR) for HZ8.2CP-E is 20 µA when measured at VR = 4 V and Ta = 25°C. This value is specified in the Electrical Characteristics table and confirms low standby power consumption in undervoltage monitoring circuits.
Can HZ8.2CP-E be used as a direct replacement for 1N4738A in existing designs?
While HZ8.2CP-E shares the same DO-41 package, 8.2 V nominal zener voltage, and 1.0 W power rating with 1N4738A, it has a wider VZ tolerance (±6.1% vs. ±5%). No PCB changes are required, but system-level validation of voltage margin is recommended before substitution in precision reference applications.
Is HZ8.2CP-E suitable for surge protection in telecom line interfaces?
HZ8.2CP-E is intended for steady-state voltage regulation and low-energy transient clamping-not primary surge suppression. For telecom line protection, it functions best as a secondary clamp after a high-energy TVS device, leveraging its 5.0 Ω dynamic resistance and predictable 8.2 V threshold to protect sensitive RS-485 transceivers from residual overshoot.
HZ8.2CP-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:
- -
HZ8.2CP-E FAQ
1.How can I place an order for HZ8.2CP-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ8.2CP-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 HZ8.2CP-E reliable?
The price and inventory of HZ8.2CP-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ8.2CP-E is usually 5 days.
3.What payment methods are accepted for HZ8.2CP-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ8.2CP-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ8.2CP-E?
HZ8.2CP-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ8.2CP-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 HZ8.2CP-E?
For technical support, including HZ8.2CP-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ8.2CP-E requirements.
6.How does Aetrix verify that HZ8.2CP-E is sourced from the original manufacturer or authorized distributors?
All HZ8.2CP-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 HZ8.2CP-E meets industry standards.
7.What is the process for return or replacement of HZ8.2CP-E?
All HZ8.2CP-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ8.2CP-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 HZ8.2CP-E part is unused and in its original packaging.
Return procedure for HZ8.2CP-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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