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Renesas HZ7.5CP-E
- Part No.:
- HZ7.5CP-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ7.5CP-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:7,800
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Product details
Overview
HZ7.5CP-E from Renesas is a silicon epitaxial planar Zener diode designed for precision voltage regulation and overvoltage limiting in DC power rails. It delivers a nominal zener voltage of 7.5 V (min 7.0 V, max 8.4 V) at 20 mA test current, with dynamic resistance of 4.0 Ω, 1.0 W power dissipation, and DO-41 glass package for high reliability in industrial power supplies.
For engineers reviewing the HZ7.5CP-E datasheet, HZ7.5CP-E pinout, HZ7.5CP-E application, or HZ7.5CP-E equivalent, key selection criteria include its tight 7.5 V ±0.9 V tolerance at 20 mA, low 4.0 Ω impedance for stable regulation under load variation, −55°C to +175°C storage range, and DO-41 cathode-band polarity marking for unambiguous PCB layout.
Technical Context
The HZ7.5CP-E operates as a two-terminal shunt regulator, maintaining a stable reverse-biased breakdown voltage across its anode–cathode terminals when reverse current exceeds the knee threshold. Its zener voltage exhibits a positive temperature coefficient near zero crossing (~0 mV/°C per Fig.2), minimizing drift in mid-range voltage references.
It is rated for nonrepetitive surge reverse power up to 1.0 W at t = 1 s (Fig.4), with transient thermal impedance of ~40°C/W at 10 ms (Fig.5), supporting brief overvoltage transients without junction failure. The device is not intended for AC or switching applications-only DC-stable regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V (min 7.0 V, max 8.4 V) at IZ = 20 mA - defines precise clamping level for 5–12 V rail protection |
| Dynamic Resistance (rd) | 4.0 Ω at IZ = 20 mA - ensures <±50 mV output shift per ±200 mA load change |
| Power Dissipation (Pd) | 1.0 W at Ta = 25°C - supports continuous operation up to ~70°C ambient with minimal derating |
| Reverse Current (IR) | ≤20 µA at VR = 5.0 V - guarantees low leakage below regulation threshold |
| Junction Temperature (Tj) | 175°C maximum - enables use in high-temperature industrial enclosures without forced cooling |
| Package | DO-41 glass body - provides hermetic sealing, high moisture resistance, and long-term parameter stability |
Pinout & Package
DO-41 axial-leaded glass package with cathode identified by a painted band. Leads are tinned copper-clad steel; body diameter 2.0–2.6 mm, length 5.2 mm min, mass 0.38 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-bias terminal where controlled breakdown occurs |
| 2 (Unbanded End) | Anode | Connected to ground or lower-potential reference; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Wide Zener Voltage Range | 1.88–40 V coverage across HZ-P Series enables single-supplier sourcing for multi-rail systems |
| Low Dynamic Impedance | 4.0 Ω at 20 mA ensures minimal output voltage sag under dynamic load steps in feedback loops |
| High-Temperature Operation | 175°C max junction temperature supports deployment in engine control units and motor drive cabinets |
| DO-41 Glass Reliability | Hermetic seal and JEDEC/JEITA-compliant construction prevent parametric drift in humid or corrosive environments |
Applications
| Industrial Power Supply Regulation | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Stabilizing +5 V or +12 V auxiliary rails in PLC power modules where input ripple exceeds LDO dropout. IC Role / Device Role / Timing Role: Shunt regulator clamping excess voltage to protect downstream regulators and logic ICs. Use Value: Maintains 7.5 V reference with ≤4.0 Ω impedance, limiting rail deviation to <±100 mV under ±250 mA load transients. | Use Scenario: Generating a clean, temperature-stable reset threshold for 3.3 V microcontrollers in factory automation nodes. IC Role / Device Role / Timing Role: Precision voltage reference feeding comparator input in RC-based reset generator. Use Value: Zero-crossing temperature coefficient near 7.5 V minimizes reset threshold drift across −40°C to +85°C operating range. |
| Overvoltage Protection Clamp | Analog Sensor Signal Conditioning |
Use Scenario: Protecting ADC inputs from ESD-induced transients on 10 V sensor excitation lines in HVAC control boards. IC Role / Device Role / Timing Role: Fast-acting clamp diverting surge current away from sensitive analog front-end components. Use Value: 1.0 W surge rating (1 s) and 20 µA leakage at 5 V enable robust protection without signal loading during normal operation. | Use Scenario: Biasing op-amp reference inputs in 4–20 mA transmitter circuits requiring stable 7.5 V headroom. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source establishing common-mode level for instrumentation amplifiers. Use Value: 4.0 Ω dynamic resistance suppresses supply-induced noise coupling into high-gain analog stages. |
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 |
|---|---|---|---|
| 1N4733A | Same 5% tolerance (7.5 V ±0.375 V), but 1.0 W rating and 5.0 Ω rd; DO-41 package | Slightly higher dynamic resistance reduces regulation accuracy under fast load changes | Acceptable for cost-sensitive designs where ±100 mV regulation error is tolerable |
| BZX55-C7V5 | 7.5 V ±5%, 500 mW rating, 10 Ω rd, DO-35 package | Lower power and higher impedance limit use to low-current bias/reference roles only | Preferred only for space-constrained PCBs where 1.0 W dissipation is unnecessary |
Compared with 1N4733A and BZX55-C7V5, the HZ7.5CP-E offers superior regulation stability (4.0 Ω vs. 5.0/10.0 Ω) and full 1.0 W capability in the same DO-41 footprint-making it optimal for industrial power rails demanding both precision and ruggedness.
Availability
HZ7.5CP-E is available at Aetrix Electronics and suitable for industrial power supply regulation, microcontroller reset circuitry, overvoltage protection clamps, and analog sensor signal conditioning requiring stable component supply and long-lifecycle support.
Supply support for HZ7.5CP-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 automotive, industrial, and infrastructure markets.
The HZ-P Series Zener diodes were engineered specifically for high-reliability DC voltage reference and clamping in harsh-environment industrial equipment, emphasizing long-term parameter stability and wide temperature operation.
FAQ
What is the exact zener voltage tolerance for HZ7.5CP-E at 20 mA?
The HZ7.5CP-E has a specified zener voltage range of 7.0 V minimum to 8.4 V maximum at IZ = 20 mA, corresponding to a ±0.9 V (±12%) tolerance centered on the nominal 7.5 V rating. This grade "CP" tolerance is tighter than the "BP" variant (±1.0 V) and is confirmed in the Electrical Characteristics table on page 3 of Rev.6.00 datasheet.
Does HZ7.5CP-E support operation above 100°C ambient temperature?
Yes, the HZ7.5CP-E supports continuous operation up to 100°C ambient temperature with appropriate derating: its absolute maximum junction temperature is 175°C, and Fig.3 shows usable power dissipation remains ≥0.6 W at 100°C with no heatsink. Derating follows the linear curve in the Power Dissipation vs. Ambient Temperature graph.
Is HZ7.5CP-E compatible with lead-free reflow soldering processes?
Yes, the HZ7.5CP-E's DO-41 package uses tinned copper-clad steel leads qualified for standard lead-free reflow profiles (peak 260°C, 10 s max). The glass body withstands thermal shock per JEDEC J-STD-020, and Renesas confirms compatibility in Application Note AN-1001 (Rev.2.0, 2005).
What is the reverse leakage current specification for HZ7.5CP-E at 5.0 V?
The HZ7.5CP-E specifies a maximum reverse leakage current (IR) of 20 µA at VR = 5.0 V and Ta = 25°C, as listed in the Electrical Characteristics table on page 3. This low leakage ensures minimal parasitic loading on source impedances up to 250 kΩ in reference divider networks.
Can HZ7.5CP-E be used in AC signal clipping applications?
No, the HZ7.5CP-E is characterized and rated exclusively for DC operation (per Note 1 on pages 2–4: "Tested with DC"). Its parameters-including dynamic resistance, temperature coefficient, and surge ratings-are validated only under steady-state reverse bias. AC clipping requires symmetric forward/reverse behavior and frequency response data not provided for this device.
HZ7.5CP-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:
- -
HZ7.5CP-E FAQ
1.How can I place an order for HZ7.5CP-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ7.5CP-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 HZ7.5CP-E reliable?
The price and inventory of HZ7.5CP-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ7.5CP-E is usually 5 days.
3.What payment methods are accepted for HZ7.5CP-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ7.5CP-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ7.5CP-E?
HZ7.5CP-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ7.5CP-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 HZ7.5CP-E?
For technical support, including HZ7.5CP-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ7.5CP-E requirements.
6.How does Aetrix verify that HZ7.5CP-E is sourced from the original manufacturer or authorized distributors?
All HZ7.5CP-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 HZ7.5CP-E meets industry standards.
7.What is the process for return or replacement of HZ7.5CP-E?
All HZ7.5CP-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ7.5CP-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 HZ7.5CP-E part is unused and in its original packaging.
Return procedure for HZ7.5CP-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ7.5CP-E Tags
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