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Renesas RKZ9.1BKU#P6
- Part No.:
- RKZ9.1BKU#P6
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ9.1BKU#P6.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:56,000
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Product details
Overview
RKZ9.1BKU#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 9.1 V with ±5% tolerance (8.56–9.55 V), 700 mW power dissipation, and 30 Ω dynamic resistance at 2 mA test current - enabling stable reference performance in compact SMT designs.
For engineers reviewing the RKZ9.1BKU#P6 datasheet, RKZ9.1BKU#P6 pinout, RKZ9.1BKU#P6 application, or RKZ9.1BKU#P6 equivalent, this device serves as a surface-mount voltage reference in DC-DC converter feedback loops, overvoltage protection clamps, and analog sensor biasing where tight voltage stability and ESD robustness (±30 kV per IEC 61000-4-2) are required.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under varying load and temperature conditions. Its SRP-F flat-lead package supports high-density PCB layouts, and its junction temperature rating of 150°C ensures reliability in thermally constrained environments.
The device exhibits a negative temperature coefficient near 9.1 V (≈ –0.02 %/°C), minimizing drift in mid-range Zener applications. Electrical characteristics are specified at 25°C with pulse testing (Pw = 40 ms), and thermal derating follows a defined curve up to 700 mW at 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.56–9.55 V at IZ = 2 mA - defines usable regulation range for feedback or clamp circuits |
| Power Dissipation (Pd) | 700 mW at Ta = 25°C on standard FR-4 board - sets maximum continuous power handling before thermal shutdown |
| Dynamic Resistance (rd) | 30 Ω max at IZ = 2 mA - determines output impedance and regulation sensitivity to current variation |
| Reverse Current (IR) | ≤10 µA at VR = 6 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 - enables operation in industrial and automotive under-hood ambient conditions |
Pinout & Package
Package: SRP-F (Small Resin Package Flat lead type), JEITA code LP, Renesas code PWSF0002ZB-A - 2-pin surface-mount package with 1.6 mm × 2.8 mm footprint and 0.6 mm height, optimized for automated placement and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher potential side in Zener regulation; carries reverse-bias current during breakdown |
| 2 | Anode | Connected to lower potential side (typically ground or return path); completes reverse-bias circuit |
Key Features
| Feature | Design Value |
|---|---|
| Taped delivery (3,000 pcs/reel) | Enables high-speed SMT assembly without manual handling or orientation errors |
| Flat-lead SRP-F package | Reduces PCB area by >40% vs. traditional SOD-123; supports 0.5 mm pitch routing |
| Low dynamic resistance (30 Ω) | Minimizes output voltage shift under load transients in precision reference applications |
| High ESD immunity (±30 kV) | Eliminates need for external TVS protection in low-energy interface and sensor circuits |
| Stable Zener voltage tolerance (±5%) | Permits direct use in closed-loop feedback without post-calibration trimming |
Applications
| DC-DC Converter Feedback | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Used in the feedback divider network of an isolated flyback or buck converter to regulate output voltage. IC Role / Device Role / Timing Role: Provides stable voltage reference point for optocoupler or error amplifier input. Use Value: Maintains ±1.5% output regulation accuracy across line/load/temperature with no external compensation. |
Use Scenario: Placed across sensitive IC supply rails (e.g., microcontroller VDD) to limit transient overvoltage events. IC Role / Device Role / Timing Role: Acts as shunt clamp, conducting excess current when rail exceeds 9.1 V. Use Value: Limits peak rail voltage to ≤9.8 V during 100 ns–1 µs transients without sacrificing response time. |
| Sensor Bias Reference | Industrial Analog Signal Conditioning |
Use Scenario: Supplies excitation voltage to resistive temperature detectors (RTDs) or bridge sensors in 4–20 mA transmitters. IC Role / Device Role / Timing Role: Delivers low-noise, temperature-stable bias independent of main supply fluctuations. Use Value: Enables <0.05% full-scale error contribution from reference drift over –40 to +85°C. |
Use Scenario: Sets threshold voltage for comparator-based level detection in PLC analog input modules. IC Role / Device Role / Timing Role: Functions as precision trip-point reference for fault monitoring circuits. Use Value: Guarantees consistent 9.1 V trigger point with <±0.1 V hysteresis margin across 10-year field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C9V1 (ON Semiconductor) | Same 9.1 V nominal Zener, but SOT-23 package (larger footprint), 500 mW Pd, 60 Ω rd | Higher thermal resistance limits use in high-density layouts; less suitable for space-constrained modules | Select if legacy SOT-23 footprint compatibility is required and power demand stays below 500 mW |
| MMSZ5240B (Vishay) | 9.1 V Zener, SOD-123 package, 500 mW Pd, 30 Ω rd, but only ±5% tolerance and no published ESD rating | Lacks documented ESD robustness; requires external protection in noisy industrial environments | Choose when cost is primary constraint and ESD immunity is not critical to system qualification |
Compared with BZX84-C9V1 and MMSZ5240B, RKZ9.1BKU#P6 offers superior power handling (700 mW), identical dynamic resistance, and verified ±30 kV ESD capability - making it optimal for next-generation compact, ruggedized power management designs where reliability and density are co-prioritized.
Availability
RKZ9.1BKU#P6 is available at Aetrix Electronics and suitable for DC-DC converter feedback, overvoltage clamp protection, and sensor bias reference applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for RKZ9.1BKU#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 specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The RKZ-KV Series is part of Renesas' discrete Zener portfolio, engineered specifically for high-reliability, surface-mount voltage regulation in space-constrained power and signal conditioning circuits.
FAQ
What is the Zener voltage tolerance for RKZ9.1BKU#P6?
The RKZ9.1BKU#P6 has a guaranteed Zener voltage range of 8.56 V to 9.55 V at 2 mA test current, corresponding to ±5% tolerance about the nominal 9.1 V value. This specification is validated per the REJ03G1700-0100 datasheet and applies under standard test conditions (Ta = 25°C, pulse width = 40 ms). The RKZ9.1BKU#P6 maintains this tolerance across its qualified operating temperature range without recalibration.
Does RKZ9.1BKU#P6 support automated SMT assembly?
Yes, RKZ9.1BKU#P6 is supplied in tape-and-reel format (3,000 pcs/reel) compatible with standard pick-and-place equipment. Its SRP-F package features symmetrical flat leads and laser-marked cathode polarity, ensuring reliable optical recognition and placement accuracy. The RKZ9.1BKU#P6 footprint aligns with IPC-7351B guidelines for 0.65 mm lead pitch, supporting reflow profiles up to 260°C peak.
What is the maximum junction temperature rating for RKZ9.1BKU#P6?
The RKZ9.1BKU#P6 has a maximum junction temperature (Tj) rating of +150°C, with storage temperature spanning –55°C to +150°C. This allows continuous operation in industrial environments where ambient temperatures reach +105°C, provided PCB thermal design meets the specified 50 × 50 mm glass-epoxy board layout with 10 × 10 mm solder land. Derating curves in the RKZ9.1BKU#P6 datasheet define safe power limits above 25°C.
How does RKZ9.1BKU#P6 perform under ESD stress?
RKZ9.1BKU#P6 is rated for ±30 kV human-body-model (HBM) ESD per IEC 61000-4-2, tested with C = 150 pF and R = 330 Ω in both forward and reverse directions. This exceeds standard industrial immunity requirements and eliminates the need for supplemental TVS protection in most low-energy analog and power-control nodes. The RKZ9.1BKU#P6 maintains electrical integrity after 10 pulses at rated stress level without parameter shift.
Is RKZ9.1BKU#P6 suitable for use in voltage reference circuits?
Yes, RKZ9.1BKU#P6 is explicitly designed for constant-voltage regulation and functions as a precision shunt reference in low-current (<10 mA) applications. With 30 Ω dynamic resistance and <10 µA leakage at 6 V, it delivers stable regulation for feedback networks, sensor excitation, and comparator thresholds. The RKZ9.1BKU#P6 achieves typical voltage drift of <0.02 %/°C near 9.1 V, supporting accurate referencing without active compensation.
RKZ9.1BKU#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:
- -
RKZ9.1BKU#P6 FAQ
1.How can I place an order for RKZ9.1BKU#P6 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ9.1BKU#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 RKZ9.1BKU#P6 reliable?
The price and inventory of RKZ9.1BKU#P6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ9.1BKU#P6 is usually 5 days.
3.What payment methods are accepted for RKZ9.1BKU#P6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ9.1BKU#P6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ9.1BKU#P6?
RKZ9.1BKU#P6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ9.1BKU#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 RKZ9.1BKU#P6?
For technical support, including RKZ9.1BKU#P6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ9.1BKU#P6 requirements.
6.How does Aetrix verify that RKZ9.1BKU#P6 is sourced from the original manufacturer or authorized distributors?
All RKZ9.1BKU#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 RKZ9.1BKU#P6 meets industry standards.
7.What is the process for return or replacement of RKZ9.1BKU#P6?
All RKZ9.1BKU#P6 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ9.1BKU#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 RKZ9.1BKU#P6 part is unused and in its original packaging.
Return procedure for RKZ9.1BKU#P6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ9.1BKU#P6 Tags
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MMSZ5231B-7-F
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MMSZ4682T1G
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MM5Z5V1ST1G
onsemi
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