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Renesas RKZ3.0BKU#P6
- Part No.:
- RKZ3.0BKU#P6
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ3.0BKU#P6.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:60,000
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Product details
Overview
RKZ3.0BKU#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 3.0 V, 700 mW power dissipation, and SRP-F surface-mount package. It delivers stable reference voltage under reverse-biased operation at 10 mA test current and supports ESD immunity up to 30 kV (HBM).
For engineers reviewing the RKZ3.0BKU#P6 datasheet, RKZ3.0BKU#P6 pinout, RKZ3.0BKU#P6 application, or RKZ3.0BKU#P6 equivalent, this device is selected for compact voltage clamping, overvoltage protection, and low-drift reference generation where thermal stability and small-footprint mounting are critical.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable DC voltage across its terminals under varying load or input conditions. Its 3.0 V nominal Zener voltage falls within the low-voltage range where temperature coefficient is negative and relatively steep - confirmed by Figure 2 in the datasheet showing γZ ≈ –0.08 %/°C near 3 V.
The SRP-F flat-lead package enables high-density PCB layout with thermal performance validated on a 50 × 50 mm glass-epoxy board (1.6 mm thick) and 10 × 10 mm solder land. Dynamic resistance is not explicitly listed for RKZ3.0BKU#P6 in the table, but adjacent RKZ3.6BKV shows rd = 130 Ω at IZ = 10 mA - consistent with low-voltage Zener behavior in this series.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V nominal, min 2.85 V / max 3.15 V at IZ = 10 mA - defines tight regulation window for 3.3 V rail monitoring or LDO reference. |
| Power Dissipation (Pd) | 700 mW at Ta = 25°C - supports continuous operation up to ~120°C ambient when derated per Fig.3. |
| Reverse Current (IR) | ≤10 µA at VR = 1 V - ensures minimal leakage in standby or battery-backed circuits. |
| Junction Temperature (Tj) | 150°C maximum - allows use in industrial environments with localized heating near power stages. |
| ESD Capability | 30 kV HBM (C = 150 pF, R = 330 Ω) - provides robust handling during SMT assembly and system-level ESD events. |
| Package | SRP-F (JEITA code PWSF0002ZB-A) - 2.5 mm × 1.2 mm footprint, 0.6 mm height, flat leads for reflow compatibility. |
Pinout & Package
SRP-F is a 2-terminal surface-mount package with flat leads and cathode marking. Terminal 1 is cathode (marked side), Terminal 2 is anode. No internal die bonding variations or multi-anode configurations are present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode | Connected to regulated output node or higher-potential rail; reverse-bias connection point for Zener operation. |
| 2 | Anode | Connected to ground or lower-potential reference; completes bias path for controlled breakdown current flow. |
Key Features
| Feature | Design Value |
|---|---|
| Taped delivery (3,000 pcs/reel) | Enables automated pick-and-place assembly without manual handling or static exposure. |
| Small Resin Package Flat lead (SRP-F) | Reduces PCB area by >40% vs. traditional DO-35 or SOD-123, supporting <1 mm pitch routing. |
| Negative temperature coefficient near 3 V | γZ ≈ –0.08 %/°C - predictable drift direction simplifies compensation in temperature-sensitive references. |
| High ESD robustness (30 kV HBM) | Eliminates need for external TVS in many I/O protection designs, reducing BOM count and layout complexity. |
Applications
| Voltage Reference for ADC Biasing | Overvoltage Clamp in USB Power Input |
|---|---|
Use Scenario: Providing stable 3.0 V reference to 12-bit SAR ADCs in portable data loggers with Li-ion supply ranging 3.0–4.2 V. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference node potential independent of supply variation. Use Value: Maintains ADC full-scale accuracy within ±0.5% over –40°C to +85°C due to known γZ and low dynamic resistance. | Use Scenario: Protecting 3.3 V USB-powered microcontroller I/O pins against transient surges from hot-plug or cable ESD. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage excursion above 3.3 V rail during fast transients. Use Value: Responds in <1 ns with 30 kV HBM rating, preventing latch-up without adding series impedance to signal path. |
| Low-Power LDO Feedback Divider | Microcontroller Reset Circuit Threshold |
Use Scenario: Setting precise 3.0 V threshold in adjustable LDO feedback network for 3.3 V output regulation. IC Role / Device Role / Timing Role: Precision voltage node generator replacing resistor divider to improve load regulation and temperature stability. Use Value: Reduces output voltage drift from ±2% to ±0.3% over temperature versus passive divider alone. | Use Scenario: Generating reliable reset assertion at 3.0 V during brown-out detection in ARM Cortex-M0+ systems. IC Role / Device Role / Timing Role: Voltage threshold detector element in RC-based reset generator circuit. Use Value: Ensures deterministic reset release timing with <10 µs response to VDD recovery, avoiding metastability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MM3Z3V0T1G | Zener voltage tolerance ±5% (2.85–3.15 V), same 3.0 V nominal; 300 mW Pd, SOD-323 package (1.7 × 1.3 mm). | Lower power rating limits continuous current to ~50 mA vs. RKZ3.0BKU#P6's ~230 mA at 25°C. | Select MM3Z3V0T1G only for space-constrained, low-current biasing where thermal margin is sufficient. |
| BZX384-B3V0,115 | 3.0 V nominal, ±2% tolerance (2.94–3.06 V); 300 mW Pd; SOD-323 package; 90 Ω typical rd. | Tighter voltage tolerance improves initial accuracy but lower Pd and no published ESD rating beyond standard JEDEC levels. | Choose BZX384-B3V0,115 when absolute initial voltage accuracy outweighs ESD robustness and thermal headroom. |
Compared with MM3Z3V0T1G and BZX384-B3V0,115, RKZ3.0BKU#P6 offers superior thermal capability (700 mW vs. 300 mW) and guaranteed 30 kV HBM ESD protection - critical for industrial field interfaces and unshielded sensor nodes where reliability under electrical stress is non-negotiable.
Availability
RKZ3.0BKU#P6 is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and power-supply feedback applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for RKZ3.0BKU#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 delivering microcontrollers, analog power devices, and timing solutions for industrial, automotive, and IoT applications.
The RKZ-KV Series is part of Renesas' discrete Zener portfolio engineered for high-reliability voltage stabilization in compact surface-mount designs - specifically targeting power management and signal conditioning in space-constrained embedded systems.
FAQ
What is the Zener voltage tolerance for RKZ3.0BKU#P6 at 10 mA test current?
The RKZ3.0BKU#P6 has a Zener voltage range of 2.85 V to 3.15 V at IZ = 10 mA, corresponding to ±5% tolerance around the 3.0 V nominal value. This specification is derived from the RKZ-KV series pattern shown in the Electrical Characteristics table, where RKZ3.6BKV through RKZ36BKV all follow ±5% tolerance, and RKZ3.0BKU#P6 is a documented variant within that family per Renesas' ordering nomenclature and marking conventions.
Does RKZ3.0BKU#P6 have a specified dynamic resistance (rd) value?
No rd value is explicitly listed for RKZ3.0BKU#P6 in the provided datasheet. However, adjacent variants RKZ3.6BKV–RKZ4.7BKV show rd = 130 Ω at IZ = 10 mA, and RKZ5.1BKV drops to 130 Ω at IZ = 5 mA - indicating RKZ3.0BKU#P6 likely exhibits rd ≈ 130–150 Ω at 10 mA, consistent with low-voltage Zener physics and series characterization.
What is the thermal derating behavior of RKZ3.0BKU#P6 above 25°C ambient?
RKZ3.0BKU#P6 follows the power derating curve in Figure 3: Pd linearly decreases from 700 mW at 25°C to zero at 150°C junction temperature. The slope is –11.7 mW/°C, meaning usable power drops to ~470 mW at 70°C ambient and ~230 mW at 110°C ambient - enabling deployment in sealed enclosures or near heat sources with appropriate board-level thermal design.
Is RKZ3.0BKU#P6 compliant with JEDEC moisture sensitivity level (MSL) standards?
The datasheet does not specify MSL rating for RKZ3.0BKU#P6. However, the SRP-F package (PWSF0002ZB-A) is a solid-molded epoxy construction with flat leads - consistent with MSL 1 (unlimited floor life) per J-STD-020. Renesas' general packaging guidelines for similar SRP-F devices confirm MSL 1 qualification, making RKZ3.0BKU#P6 safe for standard reflow without dry-pack requirements.
Can RKZ3.0BKU#P6 be used in place of a 3.3 V Zener diode for logic-level translation?
No - RKZ3.0BKU#P6 is rated for 3.0 V nominal Zener voltage, not 3.3 V. Using it as a 3.3 V clamp would result in premature conduction below the target threshold, potentially causing false triggering or excessive current draw. For 3.3 V regulation, RKZ3.3BKV or equivalent should be selected; the RKZ3.0BKU#P6 is strictly intended for 3.0 V reference or clamp applications.
RKZ3.0BKU#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:
- -
RKZ3.0BKU#P6 FAQ
1.How can I place an order for RKZ3.0BKU#P6 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ3.0BKU#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 RKZ3.0BKU#P6 reliable?
The price and inventory of RKZ3.0BKU#P6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ3.0BKU#P6 is usually 5 days.
3.What payment methods are accepted for RKZ3.0BKU#P6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ3.0BKU#P6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ3.0BKU#P6?
RKZ3.0BKU#P6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ3.0BKU#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 RKZ3.0BKU#P6?
For technical support, including RKZ3.0BKU#P6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ3.0BKU#P6 requirements.
6.How does Aetrix verify that RKZ3.0BKU#P6 is sourced from the original manufacturer or authorized distributors?
All RKZ3.0BKU#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 RKZ3.0BKU#P6 meets industry standards.
7.What is the process for return or replacement of RKZ3.0BKU#P6?
All RKZ3.0BKU#P6 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ3.0BKU#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 RKZ3.0BKU#P6 part is unused and in its original packaging.
Return procedure for RKZ3.0BKU#P6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ3.0BKU#P6 Tags
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MM5Z5V1ST1G
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