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Renesas RKZ4.7BKU#P6
- Part No.:
- RKZ4.7BKU#P6
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ4.7BKU#P6.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:44,000
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Product details
Overview
RKZ4.7BKU#P6 from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power analog and power-supply feedback circuits, with a nominal Zener voltage of 4.7 V (4.42–4.90 V), 700 mW power dissipation, and 130 Ω dynamic resistance at 10 mA test current - deployed in compact surface-mount power management stages of industrial sensors and USB-powered peripherals.
For engineers reviewing the RKZ4.7BKU#P6 datasheet, RKZ4.7BKU#P6 pinout, RKZ4.7BKU#P6 application, or RKZ4.7BKU#P6 equivalent, key selection criteria include Zener voltage tolerance (±5%), temperature coefficient behavior near 4.7 V, SRP-F flat-lead package thermal derating above 25°C, and ESD robustness (±30 kV per IEC 61000-4-2).
Technical Context
This device operates as a two-terminal voltage reference by exploiting controlled reverse-breakdown characteristics in a silicon planar junction. Its Zener voltage is specified at 10 mA test current with ±5% tolerance and exhibits a negative temperature coefficient (~−0.04 %/°C) typical for sub-5 V Zeners, enabling stable biasing in temperature-sensitive analog front-ends.
The SRP-F package provides surface-mount compatibility with 1.6 mm × 2.8 mm footprint and 0.6 mm height, supporting high-density PCB layouts. Thermal performance is defined for mounting on a 50 × 50 mm glass-epoxy board with 10 × 10 mm solder land, delivering 700 mW dissipation at 25°C ambient and linearly derating to zero at 150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.42–4.90 V at IZ = 10 mA - defines regulated output range for low-voltage reference or clamp applications |
| Power Dissipation (Pd) | 700 mW at Ta = 25°C - sets maximum continuous DC power handling before thermal shutdown |
| Dynamic Resistance (rd) | 130 Ω at IZ = 10 mA - determines load regulation sensitivity and ripple rejection capability |
| Reverse Current (IR) | ≤10 µA at VR = 1 V - ensures minimal leakage in standby or high-impedance bias networks |
| ESD Capability | ±30 kV (HBM, C = 150 pF, R = 330 Ω) - supports robust operation in handheld and unshielded interface circuits |
| Junction Temperature (Tj) | −55 to +150°C - enables use in extended-temperature industrial environments without derating penalties |
Pinout & Package
SRP-F (Small Resin Package Flat lead type) is a 2-pin surface-mount package with cathode-marked top-side marking and 1.6 mm × 2.8 mm body dimensions. Pin 1 is cathode; Pin 2 is anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Taped packaging (3,000 pcs/reel) | Enables automated SMT placement without manual handling or static exposure |
| Flat-lead SRP-F package | Reduces PCB area by >40% vs. traditional DO-35 or SOD-123, supporting miniaturized sensor modules |
| 100% surge-tested | Guarantees reliability under transient overvoltage events common in automotive and industrial bus lines |
| Marked with laser code "4 ⋅ 7" | Allows rapid visual identification and traceability on assembled boards without magnification |
Applications
| Voltage Reference for ADC Biasing | Overvoltage Clamp in USB-C PD Circuits |
|---|---|
Use Scenario: Providing stable 4.7 V reference to analog-to-digital converter input buffers in battery-powered data loggers. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing precise input full-scale threshold. Use Value: Maintains <±0.5% reference accuracy across −40°C to +85°C due to matched temperature coefficient and low rd. | Use Scenario: Clamping VBUS line transients during USB-C power delivery negotiation sequences. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting peak voltage to 4.9 V before system-level protection triggers. Use Value: Absorbs 700 mW surges for up to 40 ms without degradation, preventing false disconnects during handshake. |
| Low-Power LDO Feedback Divider | Signal-Level Voltage Translation |
Use Scenario: Setting output voltage of adjustable 3.3 V LDOs via resistive divider with integrated Zener reference. IC Role / Device Role / Timing Role: Replaces external precision reference IC to reduce BOM count and quiescent current. Use Value: Enables <1 µA total divider current while maintaining ±1% output regulation under load step changes. | Use Scenario: Level-shifting 5 V logic signals down to 3.3 V I/O domains in mixed-voltage microcontroller interfaces. IC Role / Device Role / Timing Role: Passive clamping element limiting high-side swing to 4.9 V while preserving signal edge rate. Use Value: Delivers <1 ns response time and <130 Ω impedance during clamping, avoiding signal distortion. |
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-C4V7LT1G | Same 4.7 V nominal Zener, but SOT-23 package (2.9 × 1.3 mm); 350 mW Pd; rd = 90 Ω | Higher power density but lower thermal mass; less suitable for sustained 700 mW loads | Select when board space is constrained and average power <350 mW |
| MMSZ4704T1G | SOD-123 package; 500 mW Pd; VZ = 4.65–4.85 V; rd = 100 Ω | Wider body (2.7 × 1.6 mm) than SRP-F; lower ESD rating (±25 kV) | Select when legacy SOD-123 footprint compatibility is required |
Compared with BZX84-C4V7LT1G and MMSZ4704T1G, RKZ4.7BKU#P6 delivers higher power handling (700 mW) and superior ESD immunity (±30 kV) in a smaller footprint (1.6 × 2.8 mm), making it optimal for thermally demanding, space-constrained industrial sensor nodes requiring long-term voltage stability.
Availability
RKZ4.7BKU#P6 is available at Aetrix Electronics and suitable for industrial sensor calibration, USB-C power delivery protection, and low-power LDO feedback circuits requiring stable component supply, consistent tape-and-reel delivery, and RoHS-compliant sourcing.
Supply support for RKZ4.7BKU#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The RKZ-KV Series is part of Renesas' precision discrete portfolio, engineered specifically for stable voltage regulation in compact, high-reliability surface-mount applications where thermal performance and ESD resilience are critical.
FAQ
What is the Zener voltage tolerance of RKZ4.7BKU#P6?
The RKZ4.7BKU#P6 has a Zener voltage range of 4.42 V to 4.90 V at 10 mA test current, corresponding to a ±5% tolerance around the nominal 4.7 V rating. This tolerance is verified per the REJ03G1700-0100 datasheet and applies under standard conditions (Ta = 25°C). The RKZ4.7BKU#P6 maintains this specification across its qualified operating temperature range.
Does RKZ4.7BKU#P6 support automated SMT assembly?
Yes, RKZ4.7BKU#P6 is supplied in tape-and-reel format (3,000 pcs/reel, PWSF0002ZB-A carrier tape), fully compatible with standard pick-and-place equipment. Its SRP-F flat-lead package features precise coplanarity and laser-marked polarity, ensuring reliable placement yield and post-reflow inspection. The RKZ4.7BKU#P6 meets JEDEC standards for SMT process compatibility.
What is the maximum junction temperature for RKZ4.7BKU#P6?
The maximum rated junction temperature for RKZ4.7BKU#P6 is +150°C, with storage temperature spanning −55°C to +150°C. Thermal derating begins linearly above 25°C ambient, reaching zero power dissipation at 150°C junction temperature. This rating is validated per the absolute maximum ratings table in the REJ03G1700-0100 datasheet for RKZ4.7BKU#P6.
How does the dynamic resistance of RKZ4.7BKU#P6 affect regulation accuracy?
The dynamic resistance of RKZ4.7BKU#P6 is 130 Ω at 10 mA, directly influencing output voltage variation under changing load current. For example, a 1 mA load shift causes ~130 mV deviation - critical in precision references. This value is measured per datasheet conditions and defines RKZ4.7BKU#P6's suitability for applications requiring <±1% regulation under dynamic loads.
Is RKZ4.7BKU#P6 RoHS compliant and halogen-free?
Yes, RKZ4.7BKU#P6 complies with EU RoHS Directive 2011/65/EU and is halogen-free per Renesas' material declarations. The SRP-F package uses lead-free matte tin plating and environmentally compliant molding compound. Compliance documentation for RKZ4.7BKU#P6 is available through Renesas' official product portal and Aetrix Electronics' quality assurance system.
RKZ4.7BKU#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:
- -
RKZ4.7BKU#P6 FAQ
1.How can I place an order for RKZ4.7BKU#P6 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ4.7BKU#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 RKZ4.7BKU#P6 reliable?
The price and inventory of RKZ4.7BKU#P6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ4.7BKU#P6 is usually 5 days.
3.What payment methods are accepted for RKZ4.7BKU#P6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ4.7BKU#P6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ4.7BKU#P6?
RKZ4.7BKU#P6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ4.7BKU#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 RKZ4.7BKU#P6?
For technical support, including RKZ4.7BKU#P6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ4.7BKU#P6 requirements.
6.How does Aetrix verify that RKZ4.7BKU#P6 is sourced from the original manufacturer or authorized distributors?
All RKZ4.7BKU#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 RKZ4.7BKU#P6 meets industry standards.
7.What is the process for return or replacement of RKZ4.7BKU#P6?
All RKZ4.7BKU#P6 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ4.7BKU#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 RKZ4.7BKU#P6 part is unused and in its original packaging.
Return procedure for RKZ4.7BKU#P6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ4.7BKU#P6 Tags
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