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Renesas RKZ3.3BKU#P6
- Part No.:
- RKZ3.3BKU#P6
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ3.3BKU#P6.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:40,000
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Product details
Overview
RKZ3.3BKU#P6 from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power analog and reference circuits, featuring a nominal zener voltage of 3.3 V ±5%, 700 mW power dissipation, dynamic resistance of 130 Ω at 10 mA, and ESD capability of 30 kV (HBM). It operates as a shunt voltage reference in power supply feedback paths and sensor bias networks.
For engineers reviewing the RKZ3.3BKU#P6 datasheet, RKZ3.3BKU#P6 pinout, RKZ3.3BKU#P6 application, or RKZ3.3BKU#P6 equivalent, this device is selected for stable low-voltage regulation where tight tolerance, low dynamic impedance, and surface-mount compactness are required in industrial control, automotive body electronics, and portable instrumentation designs.
Technical Context
This Zener diode uses a planar silicon junction structure optimized for stable reverse-breakdown behavior under DC and low-frequency conditions. Its 3.3 V nominal zener voltage falls within the region of negative temperature coefficient (–0.04 %/°C typical), enabling predictable drift compensation in reference circuits.
The SRP-F flat-lead package supports high-density SMT assembly with thermal performance validated on 50 × 50 mm glass-epoxy PCBs. Electrical characteristics are specified at 25°C with pulse testing (Pw = 40 ms) to minimize self-heating effects during measurement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.3 V nominal, 3.14–3.47 V range at IZ = 10 mA - ensures tight regulation tolerance for 3.3 V rail monitoring and clamping |
| Dynamic Resistance (rd) | 130 Ω max at IZ = 10 mA - maintains low output impedance for stable reference voltage under load variation |
| Power Dissipation (Pd) | 700 mW at Ta = 25°C on standard PCB - supports continuous operation in ambient temperatures up to 100°C with derating |
| Reverse Current (IR) | 10 µA max at VR = 1 V - guarantees minimal leakage in high-impedance bias networks |
| ESD Capability | 30 kV HBM (C = 150 pF, R = 330 Ω) - provides robust handling during board assembly and system-level ESD events |
| Junction Temperature (Tj) | 150°C maximum - enables reliable operation in under-hood automotive and industrial environments |
Pinout & Package
Package: SRP-F (Small Resin Package Flat lead type), JEITA code PWSF0002ZB-A, dimensions 2.5 mm × 1.2 mm × 0.9 mm (L × W × H), taping format P (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; reverse-biased terminal where zener breakdown occurs |
| 2 | Anode | Ground or low-potential reference point; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Taped delivery | Supplied in 3,000-piece reels (P-tape) for automated SMT placement without manual handling |
| Compact SRP-F package | 2.5 × 1.2 mm footprint enables high-density layout in space-constrained modules like ECUs and sensor transmitters |
| Negative tempco at 3.3 V | ≈ –0.04 %/°C allows predictable drift compensation when paired with positive-tempco components in reference dividers |
| Low leakage current | ≤10 µA at 1 V reverse bias minimizes error in high-impedance voltage divider and op-amp input networks |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating reference voltage for LIN bus transceiver biasing and microcontroller ADC reference in door module PCBs. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 3.3 V node independent of main 12 V supply fluctuations. Use Value: Enables accurate analog sensing and communication despite battery voltage sag down to 9 V, supported by 130 Ω rd and 30 kV ESD rating. |
Use Scenario: Biasing bridge amplifiers and setting gain in 4–20 mA transmitter front-ends for pressure and temperature sensors. IC Role / Device Role / Timing Role: Precision voltage clamp stabilizing op-amp input common-mode range and protecting against overvoltage transients. Use Value: Maintains signal integrity under ESD stress (30 kV HBM) and ensures <±1% output accuracy across –40°C to +105°C ambient via tight VZ tolerance. |
| Portable Medical Instrumentation | Smart Home Power Management Unit |
Use Scenario: Providing reference voltage for low-power ADCs in handheld pulse oximeters and glucose meters. IC Role / Device Role / Timing Role: Low-current zener reference operating at 1–5 mA to minimize battery drain while maintaining 3.3 V stability. Use Value: Delivers 700 mW power headroom and ≤10 µA leakage, extending battery life beyond 12 months in intermittent-use devices. |
Use Scenario: Clamping and regulating auxiliary 3.3 V rail in multi-rail smart plug controllers with Wi-Fi SoCs and relay drivers. IC Role / Device Role / Timing Role: Overvoltage protection element and secondary reference source for brownout detection circuitry. Use Value: Withstands repeated 30 kV ESD events and regulates within ±5% across full industrial temperature range, ensuring firmware reliability. |
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-C3V3 (Nexperia) | Same 3.3 V nominal, but 350 mW Pd, 90 Ω rd, SOT-23 package (larger footprint than SRP-F) | Suitable for lower-power, cost-sensitive consumer designs; not rated for 700 mW continuous dissipation | Select when board space permits SOT-23 and thermal budget is ≤350 mW |
| MMSZ4684 (ON Semiconductor) | 3.3 V nominal, 500 mW Pd, 120 Ω rd, SOD-123 package (2.7 × 1.6 mm vs. SRP-F's 2.5 × 1.2 mm) | Better thermal performance than BZX84 but smaller power rating than RKZ3.3BKU#P6; lacks published 30 kV HBM rating | Prefer for mid-power applications needing tighter rd than BZX84 but where 700 mW headroom is unnecessary |
Compared with BZX84-C3V3 and MMSZ4684, RKZ3.3BKU#P6 offers superior power handling (700 mW), identical 3.3 V regulation, and industry-leading 30 kV HBM ESD robustness - making it optimal for automotive and industrial systems demanding sustained reliability under electrical stress.
Availability
RKZ3.3BKU#P6 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable medical instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for RKZ3.3BKU#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 solutions for automotive, industrial, and IoT applications.
The RKZ-KV Series was developed specifically for high-reliability, low-voltage Zener regulation in space-constrained SMT designs - emphasizing tight voltage tolerance, low dynamic impedance, and robust ESD immunity for mission-critical subsystems.
FAQ
What is the exact zener voltage tolerance for RKZ3.3BKU#P6 at 10 mA test current?
The RKZ3.3BKU#P6 has a guaranteed zener voltage range of 3.14 V to 3.47 V (±5% around 3.3 V) when tested at IZ = 10 mA and Ta = 25°C. This tolerance is confirmed in the Electrical Characteristics table of Renesas document REJ03G1700-0100 Rev.1.00 and applies to every unit shipped. The RKZ3.3BKU#P6 achieves this specification using silicon planar junction process control calibrated per lot.
Does RKZ3.3BKU#P6 support operation above 100°C ambient temperature?
Yes, RKZ3.3BKU#P6 is rated for storage from –55°C to +150°C and junction temperature up to 150°C. When mounted on a standard 50 × 50 mm glass-epoxy PCB, its power dissipation derates linearly above 25°C ambient - allowing continuous operation up to approximately 100°C ambient at full 700 mW, and higher ambient temperatures at reduced power. The RKZ3.3BKU#P6 datasheet provides the full Pd vs. Ta curve on Page 4.
Is RKZ3.3BKU#P6 RoHS-compliant and halogen-free?
Yes, RKZ3.3BKU#P6 complies with EU RoHS Directive 2011/65/EU and is halogen-free per Renesas' environmental specifications. The SRP-F package uses lead-free matte tin plating on copper leads, and all materials meet J-STD-609 Class 1 definition for halogen content. Compliance documentation for RKZ3.3BKU#P6 is available through Renesas' official product portal and Aetrix Electronics' material declarations.
Can RKZ3.3BKU#P6 be used as a substitute for RKZ3.3BKV in existing designs?
No - RKZ3.3BKU#P6 and RKZ3.3BKV are distinct part numbers with different marking codes, tape formats, and quality screening. RKZ3.3BKU#P6 uses "#P6" suffix indicating P-tape (3,000 pcs/reel) and updated internal traceability; RKZ3.3BKV appears in older documentation without that suffix. While both share identical electrical specs and SRP-F packaging, RKZ3.3BKU#P6 supersedes RKZ3.3BKV for new designs and requires validation per Renesas' change notification process before drop-in replacement.
What is the thermal resistance from junction to ambient (RθJA) for RKZ3.3BKU#P6?
Renesas does not publish an explicit RθJA value for RKZ3.3BKU#P6. Instead, thermal performance is characterized via the Power Dissipation vs. Ambient Temperature curve (Fig.3, Page 4), which shows 700 mW maximum at Ta = 25°C on a 50 × 50 mm glass-epoxy board with 10 × 10 mm solder land. From this data, effective RθJA is approximately 179°C/W - calculated as (150°C – 25°C) / 0.7 W. This value applies only to the defined PCB layout; RKZ3.3BKU#P6 performance varies with actual board copper area and airflow.
RKZ3.3BKU#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:
- -
RKZ3.3BKU#P6 FAQ
1.How can I place an order for RKZ3.3BKU#P6 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ3.3BKU#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 RKZ3.3BKU#P6 reliable?
The price and inventory of RKZ3.3BKU#P6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ3.3BKU#P6 is usually 5 days.
3.What payment methods are accepted for RKZ3.3BKU#P6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ3.3BKU#P6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ3.3BKU#P6?
RKZ3.3BKU#P6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ3.3BKU#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 RKZ3.3BKU#P6?
For technical support, including RKZ3.3BKU#P6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ3.3BKU#P6 requirements.
6.How does Aetrix verify that RKZ3.3BKU#P6 is sourced from the original manufacturer or authorized distributors?
All RKZ3.3BKU#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 RKZ3.3BKU#P6 meets industry standards.
7.What is the process for return or replacement of RKZ3.3BKU#P6?
All RKZ3.3BKU#P6 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ3.3BKU#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 RKZ3.3BKU#P6 part is unused and in its original packaging.
Return procedure for RKZ3.3BKU#P6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ3.3BKU#P6 Tags
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