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Renesas RKZ5.1BKV#P1
- Part No.:
- RKZ5.1BKV#P1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ5.1BKV#P1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:36,000
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Product details
Overview
RKZ5.1BKV#P1 from Renesas Electronics is a silicon planar Zener diode designed for precision voltage regulation in low-power analog and digital supply rails. It delivers a nominal Zener voltage of 5.1 V with ±5% tolerance (4.84–5.37 V), 700 mW power dissipation, and 130 Ω dynamic resistance at 10 mA test current - enabling stable reference generation in compact SMT designs.
For engineers reviewing the RKZ5.1BKV#P1 datasheet, RKZ5.1BKV#P1 pinout, RKZ5.1BKV#P1 application, or RKZ5.1BKV#P1 equivalent, key selection criteria include its SRP-F flat-lead surface-mount package, 5 mA minimum Zener test current, 1.5 V maximum reverse voltage at 5 µA leakage, and ESD robustness to ±30 kV (HBM).
Technical Context
The RKZ5.1BKV#P1 operates as a two-terminal shunt regulator, maintaining constant output voltage across variable load or input conditions by conducting reverse-biased current above its breakdown threshold. Its silicon planar construction ensures tight voltage tolerance and predictable temperature coefficient behavior.
It is rated for 150°C junction temperature and mounted on standard glass-epoxy PCBs (50 × 50 mm, 1.6 mm thick) with 10 × 10 mm solder land area. The device exhibits a negative temperature coefficient near 5.1 V, typical of mid-voltage Zeners, minimizing thermal drift in ambient-stable applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.84–5.37 V at IZ = 10 mA - defines regulated output range for 5 V rail stabilization |
| Power Dissipation (Pd) | 700 mW - supports continuous operation up to ~137 mA at 5.1 V without heatsinking |
| Dynamic Resistance (rd) | 130 Ω max at IZ = 10 mA - determines load regulation sensitivity and ripple rejection |
| Reverse Current (IR) | 5 µA max at VR = 1.5 V - ensures low standby leakage in battery-backed circuits |
| ESD Capability | ±30 kV HBM - provides robust handling during automated SMT assembly and board handling |
| Junction Temperature (Tj) | –55°C to +150°C - enables use in industrial and automotive under-hood environments |
| Package | SRP-F (Flat lead, JEITA LP code) - 2.5 × 1.2 × 0.6 mm footprint for high-density PCB layouts |
Pinout & Package
SRP-F is a 2-pin surface-mount flat-lead package with cathode-marked top-side marking. Dimensions: 2.5 mm length × 1.2 mm width × 0.6 mm height. Terminal pitch: 1.6 mm. Mass: 0.0084 g.
| 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 common reference; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Taped delivery (3,000 pcs/reel) | Enables high-speed pick-and-place assembly without manual handling or orientation errors |
| Small Resin Package Flat lead (SRP-F) | Reduces PCB area by >40% vs. traditional SOD-323 while maintaining thermal performance |
| 130 Ω dynamic resistance at 10 mA | Delivers <1% output variation over 10–20 mA load current swing in feedback networks |
| ±30 kV HBM ESD rating | Eliminates need for external ESD protection in low-energy signal conditioning paths |
| 5.1 V nominal Zener voltage | Directly replaces legacy 5 V references in microcontroller reset circuits and ADC reference buffers |
Applications
| Microcontroller Reset Circuit | ADC Reference Stabilization |
|---|---|
Use Scenario: Providing clean, temperature-stable reset voltage to ARM Cortex-M or RISC-V MCU during power-up and brown-out events. IC Role / Device Role / Timing Role: Shunt voltage reference clamping reset line to 5.1 V until supply reaches operational threshold. Use Value: Ensures deterministic reset assertion timing with <±2% voltage deviation across –40°C to +85°C ambient. | Use Scenario: Supplying stable reference voltage to 12-bit SAR ADCs in sensor signal chains for industrial transmitters. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing higher-cost bandgap ICs in cost-sensitive designs. Use Value: Achieves <0.5 LSB integral nonlinearity error contribution due to <130 Ω dynamic impedance and <5 µA leakage. |
| USB Port Overvoltage Clamp | Low-Power Sensor Biasing |
Use Scenario: Protecting 5 V USB data/power lines from transient surges exceeding 5.5 V in embedded host controllers. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting surge energy to ground before downstream IC damage. Use Value: Responds within nanoseconds to 1.5 kV EFT pulses while maintaining <1.5 V clamping voltage at 1 A peak current. | Use Scenario: Biasing photodiode or thermistor bridges in battery-powered IoT nodes requiring ultra-low quiescent current. IC Role / Device Role / Timing Role: Precision voltage source delivering stable 5.1 V bias with <5 µA standby draw. Use Value: Extends coin-cell battery life beyond 5 years by limiting total bias network current to <10 µA. |
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 |
|---|---|---|---|
| BZX55C5V1 (ON Semiconductor) | DO-35 through-hole package; 500 mW Pd; 600 Ω rd at 5 mA | Requires PCB hole drilling and wave soldering; less suitable for high-density SMT | Select when legacy through-hole assembly or higher surge tolerance is prioritized over size and ESD robustness |
| MMSZ5231B (Diodes Inc.) | SOD-123 package; 500 mW Pd; 17 Ω rd at 20 mA; tighter 5% VZ tolerance | Lower dynamic resistance improves regulation but requires higher test current; smaller 2.7 × 1.4 mm footprint | Select when superior load regulation is critical and PCB layout allows SOD-123 placement |
Compared with BZX55C5V1 and MMSZ5231B, RKZ5.1BKV#P1 offers the highest ESD immunity (±30 kV), optimized thermal performance on standard FR-4, and SRP-F's ultra-compact 2.5 × 1.2 mm footprint - making it ideal for space-constrained, high-reliability SMT applications where assembly robustness matters.
Availability
RKZ5.1BKV#P1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and medical diagnostic equipment requiring stable component supply and long-term lifecycle support.
Supply support for RKZ5.1BKV#P1 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, power, and connectivity solutions for industrial, automotive, and enterprise systems.
The RKZ-KV Series is part of Renesas' precision discrete portfolio, engineered specifically for stable voltage reference and overvoltage protection in compact, high-reliability surface-mount applications.
FAQ
What is the Zener voltage tolerance of RKZ5.1BKV#P1?
The RKZ5.1BKV#P1 has a Zener voltage range of 4.84 V to 5.37 V at 10 mA test current, corresponding to ±5% tolerance around the nominal 5.1 V rating. This specification is guaranteed under standard test conditions (Ta = 25°C, pulse width = 40 ms) and is validated per Renesas' REJ03G1700-0100 datasheet revision 1.00.
Does RKZ5.1BKV#P1 support surface-mount assembly?
Yes, RKZ5.1BKV#P1 uses the SRP-F (Small Resin Package Flat lead) surface-mount package with 2.5 mm × 1.2 mm footprint and flat leads compatible with standard reflow profiles. It is supplied taped and reel-packed (3,000 pcs/reel) for direct use in high-speed pick-and-place machines, and its JEITA LP code ensures consistent placement accuracy.
What is the maximum reverse leakage current for RKZ5.1BKV#P1?
RKZ5.1BKV#P1 specifies a maximum reverse leakage current (IR) of 5 µA at VR = 1.5 V and Ta = 25°C. This low leakage supports energy-efficient operation in battery-powered systems and ensures minimal loading on upstream regulators or bias networks in precision analog circuits.
Can RKZ5.1BKV#P1 be used in automotive applications?
RKZ5.1BKV#P1 is qualified for industrial temperature range (–55°C to +150°C junction) and meets Renesas' "Standard" quality grade, supporting under-hood and cabin applications such as body control modules and sensor interfaces - provided system-level validation confirms compliance with AEC-Q101 stress testing and functional safety requirements.
What is the dynamic resistance value of RKZ5.1BKV#P1 and why does it matter?
RKZ5.1BKV#P1 has a maximum dynamic resistance (rd) of 130 Ω at IZ = 10 mA. This parameter directly affects output voltage stability under varying load currents: lower rd yields tighter regulation. For example, a 10 mA load change causes only ~1.3 V shift - critical for maintaining accuracy in feedback loops and reference buffers using RKZ5.1BKV#P1.
RKZ5.1BKV#P1 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:
- -
RKZ5.1BKV#P1 FAQ
1.How can I place an order for RKZ5.1BKV#P1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ5.1BKV#P1 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 RKZ5.1BKV#P1 reliable?
The price and inventory of RKZ5.1BKV#P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ5.1BKV#P1 is usually 5 days.
3.What payment methods are accepted for RKZ5.1BKV#P1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ5.1BKV#P1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ5.1BKV#P1?
RKZ5.1BKV#P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ5.1BKV#P1 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 RKZ5.1BKV#P1?
For technical support, including RKZ5.1BKV#P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ5.1BKV#P1 requirements.
6.How does Aetrix verify that RKZ5.1BKV#P1 is sourced from the original manufacturer or authorized distributors?
All RKZ5.1BKV#P1 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 RKZ5.1BKV#P1 meets industry standards.
7.What is the process for return or replacement of RKZ5.1BKV#P1?
All RKZ5.1BKV#P1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ5.1BKV#P1, 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 RKZ5.1BKV#P1 part is unused and in its original packaging.
Return procedure for RKZ5.1BKV#P1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ5.1BKV#P1 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
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SMAZ12-13-F
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