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Renesas RKZ7.5BKU#P6
- Part No.:
- RKZ7.5BKU#P6
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ7.5BKU#P6.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:36,000
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Product details
Overview
RKZ7.5BKU#P6 from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power analog and power-supply feedback circuits. It delivers a nominal Zener voltage of 7.5 V with ±4% tolerance (7.06–7.84 V), 700 mW power dissipation, and 30 Ω dynamic resistance at 10 mA test current - enabling stable reference performance in compact SMT designs.
For engineers reviewing the RKZ7.5BKU#P6 datasheet, RKZ7.5BKU#P6 pinout, RKZ7.5BKU#P6 application, or RKZ7.5BKU#P6 equivalent, key selection criteria include its SRP-F flat-lead package footprint, 2 mA minimum Zener current for regulation onset, ESD robustness (±30 kV per IEC 61000-4-2), and temperature coefficient behavior near zero crossing (~0.02%/°C at 7.5 V).
Technical Context
This device operates as a two-terminal voltage reference using controlled avalanche breakdown in a planar-diffused silicon junction. Its Zener voltage is specified at 10 mA test current with pulse conditions (Pw = 40 ms), and it exhibits low dynamic impedance (30 Ω) to maintain regulation under varying load currents.
The SRP-F package supports high-density surface-mount assembly with 0.6 mm lead width and 2.5 mm body length. Thermal derating follows a linear 700 mW maximum at 25°C ambient, decreasing to zero at 150°C junction temperature - requiring board-level thermal design per the 50 × 50 mm glass-epoxy reference layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.06–7.84 V at IZ = 10 mA - defines tight regulation window for 7.5 V reference applications |
| Power Dissipation (Pd) | 700 mW at Ta = 25°C - sets maximum continuous DC or pulsed power handling on standard PCB |
| Dynamic Resistance (rd) | 30 Ω at IZ = 10 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤2 μA at VR = 4 V - ensures low leakage in standby or high-impedance bias networks |
| ESD Capability | ±30 kV (HBM, C = 150 pF, R = 330 Ω) - provides robustness against handling and system-level electrostatic discharge |
| Junction Temperature (Tj) | –55 to +150°C - supports industrial-grade operation without derating below –40°C or above +85°C ambient |
Pinout & Package
Package: SRP-F (Small Resin Package Flat lead type), JEITA code LP, Renesas code PWSF0002ZB-A - 2-pin surface-mount package with 0.6 mm lead width, 2.5 mm body length, and cathode-marked top-side marking "7 ⋅ 5".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity must be observed for proper reverse-bias operation |
| 2 | Anode | Connected to ground or lower-potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Taped delivery (3,000 pcs/reel) | Enables automated pick-and-place assembly without manual handling or orientation errors |
| Flat-lead SRP-F package | Reduces PCB footprint vs. traditional DO-35 or SOD-123; supports >1000 components/in² density |
| Low temperature coefficient | ~0.02%/°C near 7.5 V - minimizes drift over industrial temperature range (–40 to +85°C) |
| Pulse-tested Zener parameters | Specified under 40 ms pulses - ensures stable regulation during transient load events in SMPS feedback loops |
Applications
| SMPS Feedback Reference | Industrial Sensor Biasing |
|---|---|
Use Scenario: Provides precise 7.5 V reference for optocoupler-based feedback in isolated flyback converters. IC Role / Device Role / Timing Role: Zener diode functions as secondary-side voltage reference defining output regulation setpoint. Use Value: Tight 7.06–7.84 V tolerance and 30 Ω rd ensure ±1.5% output accuracy across line/load/temperature. |
Use Scenario: Supplies stable bias voltage to bridge-based pressure or temperature transducers in PLC input modules. IC Role / Device Role / Timing Role: Acts as passive voltage reference for ratiometric sensor excitation and ADC reference scaling. Use Value: Low 2 μA leakage at 4 V reverse bias prevents signal-path loading in high-impedance sensor interfaces. |
| USB-C Power Negotiation Clamp | Automotive Body Control Module (BCM) Monitoring |
Use Scenario: Clamps CC line voltage during USB-C PD communication to prevent overvoltage damage to controller ICs. IC Role / Device Role / Timing Role: Functions as overvoltage protection element with fast response to 5–20 V transients. Use Value: ±30 kV ESD rating protects against hot-plug induced discharges without external TVS supplementation. |
Use Scenario: Regulates supply to microcontroller reset circuitry in 12 V automotive BCMs operating under load-dump conditions. IC Role / Device Role / Timing Role: Maintains clean 7.5 V rail for POR and brown-out detection logic during battery fluctuations. Use Value: 150°C max junction temperature and –55°C min storage rating support under-hood deployment without derating. |
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-C7V5 (Nexperia) | Same 7.5 V nominal, but SOT-23 package (smaller footprint), 350 mW Pd, 40 Ω rd | Limited power handling; suitable only for sub-100 mW reference loads | Select when board space is critical and thermal budget allows lower dissipation |
| MMSZ5235B (ON Semiconductor) | 7.5 V nominal, SOD-123 package, 500 mW Pd, 30 Ω rd, but only ±25 kV ESD rating | Lower ESD robustness requires additional system-level protection in noisy environments | Choose where cost is prioritized over field reliability in industrial ESD-prone settings |
Compared with BZX84-C7V5 and MMSZ5235B, RKZ7.5BKU#P6 offers superior thermal capability (700 mW), identical dynamic impedance (30 Ω), and highest ESD immunity (±30 kV), making it optimal for ruggedized power management where regulation stability and surge resilience are co-critical.
Availability
RKZ7.5BKU#P6 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface circuits, and automotive body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for RKZ7.5BKU#P6 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 is a global semiconductor leader delivering microcontrollers, analog power, and timing solutions for industrial, automotive, and infrastructure markets.
The RKZ-KV Series targets precision voltage regulation in space-constrained SMT applications, emphasizing thermal robustness, ESD resilience, and tight parametric consistency across temperature - specifically engineered for feedback, clamping, and biasing roles in mission-critical analog subsystems.
FAQ
What is the Zener voltage tolerance of RKZ7.5BKU#P6?
The RKZ7.5BKU#P6 has a Zener voltage range of 7.06 V to 7.84 V at 10 mA test current, corresponding to ±4% tolerance around the nominal 7.5 V rating. This specification is guaranteed under pulse test conditions (Pw = 40 ms) per REJ03G1700-0100 Rev.1.00, ensuring repeatability in production and design margin for regulation accuracy.
Does RKZ7.5BKU#P6 support high-temperature operation?
Yes, RKZ7.5BKU#P6 is rated for junction temperatures from –55°C to +150°C and storage temperatures spanning the same range. Its power dissipation derates linearly from 700 mW at 25°C ambient to zero at 150°C, enabling reliable use in under-hood automotive or industrial enclosures where ambient exceeds 85°C - provided PCB thermal design follows the 50 × 50 mm glass-epoxy reference layout.
What package type does RKZ7.5BKU#P6 use, and is it RoHS-compliant?
RKZ7.5BKU#P6 uses the SRP-F (Small Resin Package Flat lead) package, JEITA code LP, with dimensions including 2.5 mm body length and 0.6 mm lead width. Per Renesas documentation and compliance statements, the device meets RoHS Directive 2011/65/EU requirements, with lead-free terminations and halogen-free molding compound - confirmed in Renesas' official environmental reports.
How does the dynamic resistance of RKZ7.5BKU#P6 affect regulation performance?
The RKZ7.5BKU#P6 exhibits 30 Ω dynamic resistance at 10 mA Zener current, directly determining how much output voltage shifts with load current changes. For example, a 10 mA variation in Zener current causes ~0.3 V deviation - critical for high-accuracy references. This value is measured under standardized pulse conditions and remains stable across the industrial temperature range due to the device's near-zero temperature coefficient at 7.5 V.
Can RKZ7.5BKU#P6 replace older through-hole Zener diodes like 1N4733A in new designs?
RKZ7.5BKU#P6 is not a direct drop-in replacement for 1N4733A due to differing packages (SRP-F vs. DO-41) and thermal characteristics, but it serves the same 7.5 V regulation function with enhanced performance: higher power rating (700 mW vs. 1 W derated), lower dynamic resistance (30 Ω vs. 35 Ω), and superior ESD immunity (±30 kV vs. unspecified). Layout redesign is required, but the electrical behavior is compatible for most SMT-based upgrades.
RKZ7.5BKU#P6 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:
- -
RKZ7.5BKU#P6 FAQ
1.How can I place an order for RKZ7.5BKU#P6 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ7.5BKU#P6 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 RKZ7.5BKU#P6 reliable?
The price and inventory of RKZ7.5BKU#P6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ7.5BKU#P6 is usually 5 days.
3.What payment methods are accepted for RKZ7.5BKU#P6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ7.5BKU#P6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ7.5BKU#P6?
RKZ7.5BKU#P6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ7.5BKU#P6 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 RKZ7.5BKU#P6?
For technical support, including RKZ7.5BKU#P6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ7.5BKU#P6 requirements.
6.How does Aetrix verify that RKZ7.5BKU#P6 is sourced from the original manufacturer or authorized distributors?
All RKZ7.5BKU#P6 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 RKZ7.5BKU#P6 meets industry standards.
7.What is the process for return or replacement of RKZ7.5BKU#P6?
All RKZ7.5BKU#P6 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ7.5BKU#P6, 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 RKZ7.5BKU#P6 part is unused and in its original packaging.
Return procedure for RKZ7.5BKU#P6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ7.5BKU#P6 Tags
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MM5Z5V1ST1G
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