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Renesas HZ12CP-E
- Part No.:
- HZ12CP-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ12CP-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:2,880
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Product details
Overview
HZ12CP-E from Renesas Technology is a silicon epitaxial planar Zener diode designed for voltage regulation and overvoltage limiting in DC power rails and reference circuits. It delivers a nominal zener voltage of 12.0 V to 13.5 V at 20 mA test current, with dynamic resistance of 9.0 Ω, maximum power dissipation of 1.0 W, and junction temperature rating up to 175°C - enabling stable operation in industrial power supply feedback loops.
For engineers reviewing the HZ12CP-E datasheet, HZ12CP-E pinout, HZ12CP-E application, or HZ12CP-E equivalent, key selection criteria include its DO-41 glass package, ±8.3% zener voltage tolerance (CP grade), low temperature coefficient near zero crossing (~0 mV/°C per Fig.2), and surge capability up to 1.0 W nonrepetitive reverse power at t = 1 s.
Technical Context
The HZ12CP-E operates as a two-terminal shunt regulator, maintaining stable voltage across its cathode–anode terminals when reverse-biased above its breakdown threshold. Its silicon epitaxial planar structure ensures tight parameter control and low leakage, with IR ≤ 10 µA at VR = 10.0 V.
Thermal performance is defined by transient thermal impedance (Zth ≈ 100°C/W at t = 1 ms, decreasing to ~20°C/W at steady state with infinite heatsink) and derated power dissipation - dropping from 1.0 W at 25°C ambient to zero at 175°C per Fig.3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.0 V to 13.5 V at IZ = 20 mA - defines regulated output voltage range under nominal bias |
| Dynamic Resistance (rd) | 9.0 Ω max at IZ = 20 mA - determines load regulation sensitivity and ripple rejection |
| Power Dissipation (Pd) | 1.0 W at Ta = 25°C - sets maximum continuous DC power handling without heatsink |
| Reverse Current (IR) | ≤10 µA at VR = 10.0 V - ensures low standby leakage in voltage-sense paths |
| Junction Temperature (Tj) | −55°C to +175°C - supports operation in extended-temperature industrial environments |
| Package | DO-41 glass axial - provides hermetic sealing, high reliability, and standard through-hole mounting |
Pinout & Package
DO-41 glass package: cylindrical body with axial leads; cathode identified by band marking. Total mass: 0.38 g. Dimensions per JEDEC/JEITA: length ≥26.0 mm, diameter φ3.0–φ5.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; sinks current during zener conduction |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes reverse-bias path |
Key Features
| Feature | Design Value |
|---|---|
| CP-grade voltage tolerance | ±8.3% (12.0–13.5 V), tighter than BP grade - improves system-level voltage accuracy without trimming |
| Glass DO-41 encapsulation | Hermetically sealed, moisture-resistant construction - ensures long-term stability in humid or harsh environments |
| Low temperature coefficient | ≈0 mV/°C near 12 V (per Fig.2) - minimizes drift across operating temperature range |
| Nonrepetitive surge rating | 1.0 W at t = 1 s (Fig.4) - withstands transient overvoltage events like load dump or ESD coupling |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converter feedback networks using optocoupler-coupled error amplifiers. IC Role / Device Role / Timing Role: Shunt reference providing precise 12 V threshold to TL431-like comparator inputs. Use Value: CP-grade tolerance ensures ±1% output regulation without external trimming; DO-41 reliability sustains >10-year field life. |
Use Scenario: Clamping 12 V rail against surges exceeding 15 V in PLC I/O modules or motor drive logic supplies. IC Role / Device Role / Timing Role: Passive crowbar element diverting excess current away from downstream logic ICs. Use Value: 1.0 W surge rating absorbs 100 ms transients; low rd limits clamping overshoot to <13.5 V. |
| Reference Voltage Source | DC Bias Generator |
Use Scenario: Generating stable 12 V reference for analog-to-digital converters or sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Low-drift voltage source feeding precision op-amp bias networks. Use Value: Near-zero tempco at 12 V reduces reference drift to <±0.5 mV over −40°C to +85°C. |
Use Scenario: Setting gate bias point for discrete MOSFET level shifters in 12 V automotive interface circuits. IC Role / Device Role / Timing Role: Fixed-voltage node establishing turn-on threshold for high-side switches. Use Value: Tight VZ tolerance ensures consistent switching thresholds; glass package resists under-hood humidity. |
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 |
|---|---|---|---|
| 1N4742A | Zener voltage 12 V ±5%, Pd = 1.0 W, DO-41, but higher rd (10 Ω vs. 9.0 Ω) and wider tempco (±0.07%/°C) | Suitable for general-purpose regulation where tighter tempco is not required | Prefer HZ12CP-E when long-term stability or low-temperature drift is critical |
| BZX55-C12 | Zener voltage 12 V ±5%, Pd = 500 mW, DO-35 glass - lower power rating and no CP-grade option | Limited to low-power biasing; unsuitable for 1 W surge or continuous 20 mA loads | Select HZ12CP-E for full 1.0 W capability and industrial-grade reliability |
Compared with 1N4742A and BZX55-C12, the HZ12CP-E offers superior thermal robustness (175°C Tj), tighter CP-grade voltage control, and verified surge endurance - making it preferred for mission-critical industrial power monitoring and protection.
Availability
HZ12CP-E is available at Aetrix Electronics and suitable for industrial power supply feedback, overvoltage protection clamp, and reference voltage source applications requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for HZ12CP-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. (now part of Renesas Electronics Corporation) is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The HZ-P Series was developed specifically for precision DC voltage regulation and transient overvoltage limiting in industrial power systems, emphasizing reliability, thermal resilience, and tight parametric control in glass-encapsulated Zener diodes.
FAQ
What is the exact zener voltage range for HZ12CP-E at 20 mA?
The HZ12CP-E has a guaranteed zener voltage range of 12.0 V to 13.5 V when tested at IZ = 20 mA and Ta = 25°C. This ±8.3% tolerance defines the CP grade within the HZ-P Series and is confirmed in the Electrical Characteristics table on page 3 of the Rev.6.00 datasheet.
Is HZ12CP-E compatible with lead-free reflow soldering processes?
The HZ12CP-E uses a glass DO-41 package with axial leads and is rated for manual soldering and wave soldering per JEDEC standards. While not explicitly qualified for lead-free reflow (which subjects axial components to thermal shock), its 175°C junction rating and glass encapsulation support hand-soldering at ≤350°C for 3 seconds - verify process compatibility with Renesas Application Note AN-1002 before automated assembly.
Does HZ12CP-E have a specified temperature coefficient at 12 V?
Yes - Figure 2 ("Temperature Coefficient vs. Zener Voltage") shows that the HZ12CP-E exhibits a temperature coefficient near 0 mV/°C (approximately ±0.02 mV/°C) at VZ ≈ 12 V, confirming minimal voltage drift across temperature. This behavior is intrinsic to the silicon epitaxial planar structure and is consistent across CP-grade parts in the 11–13 V range.
Can HZ12CP-E replace HZ12BP in an existing design?
Yes, the HZ12CP-E can directly replace HZ12BP in most applications, as both share identical DO-41 packaging, pinout, and absolute maximum ratings. However, the CP grade offers tighter voltage tolerance (12.0–13.5 V vs. 11.4–12.6 V for BP), resulting in higher nominal regulation accuracy - no layout change is needed, but verify system margin with the higher VZ bound.
What is the maximum reverse current specification for HZ12CP-E at 10 V?
The HZ12CP-E specifies a maximum reverse current (IR) of 10 µA when subjected to VR = 10.0 V at Ta = 25°C. This value is listed in the "Electrical Characteristics" table on page 3 and reflects low leakage essential for high-impedance reference and sensing nodes.
HZ12CP-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:
- -
HZ12CP-E FAQ
1.How can I place an order for HZ12CP-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ12CP-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 HZ12CP-E reliable?
The price and inventory of HZ12CP-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ12CP-E is usually 5 days.
3.What payment methods are accepted for HZ12CP-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ12CP-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ12CP-E?
HZ12CP-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ12CP-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 HZ12CP-E?
For technical support, including HZ12CP-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ12CP-E requirements.
6.How does Aetrix verify that HZ12CP-E is sourced from the original manufacturer or authorized distributors?
All HZ12CP-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 HZ12CP-E meets industry standards.
7.What is the process for return or replacement of HZ12CP-E?
All HZ12CP-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ12CP-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 HZ12CP-E part is unused and in its original packaging.
Return procedure for HZ12CP-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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