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Renesas RKZ5.1B2KG-P#P1
- Part No.:
- RKZ5.1B2KG-P#P1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ5.1B2KG-P#P1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:102,777
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Product details
Overview
RKZ5.1B2KG-P#P1 from Renesas Electronics is a silicon planar Zener diode designed for precision voltage stabilization and transient surge absorption in low-power signal and bias circuits. It delivers a nominal Zener voltage of 5.1 V (4.98–5.20 V), 5 μA maximum reverse leakage at 1.5 V, 130 Ω dynamic resistance at 5 mA, and operates within a 200 mW power dissipation limit on PCB - commonly deployed in voltage reference networks for analog sensors and microcontroller reset circuits.
For engineers reviewing the RKZ5.1B2KG-P#P1 datasheet, RKZ5.1B2KG-P#P1 pinout, RKZ5.1B2KG-P#P1 application, or RKZ5.1B2KG-P#P1 equivalent, key selection criteria include its URP (Ultra small Resin Package) footprint, halogen-free compliance, ESD robustness (±30 kV per IEC 61000-4-2), and tight 5% Zener voltage tolerance at 5 mA test current.
Technical Context
This Zener diode uses a silicon planar junction structure optimized for stable reverse-bias operation with minimal temperature drift. Its Zener voltage exhibits a near-zero temperature coefficient around 5.1 V (≈0.02%/°C per Fig.2), enabling stable reference performance across –55°C to +150°C ambient range.
The device is rated for non-repetitive surge reverse power up to ~1.2 W for 10 ms (Fig.4), making it suitable for clamping electrostatic discharge events and low-energy transients. It is not intended for continuous regulation under high-current or high-temperature conditions beyond its 200 mW derated envelope.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.98–5.20 V at IZ = 5 mA - defines stable regulation point for low-current reference applications |
| Reverse Leakage (IR) | ≤5 μA at VR = 1.5 V - ensures minimal quiescent current draw in standby bias networks |
| Dynamic Resistance (rd) | 130 Ω at IZ = 5 mA - indicates moderate regulation stiffness; suitable for non-critical references |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C on PCB - sets absolute thermal limit for continuous DC operation |
| ESD Capability | ±30 kV (HBM, C = 150 pF, R = 330 Ω) - provides robust protection against handling and system-level ESD events |
| Junction Temperature (Tj) | 150°C maximum - constrains usable ambient range when mounted on standard FR-4 PCB |
| Package | URP (SC-76A) - 1.7 mm × 1.25 mm × 0.45 mm surface-mount footprint for high-density layout |
Pinout & Package
Package: Ultra small Resin Package (URP), JEITA code PTSP0002ZA-A, SC-76A outline, mass ≈ 0.004 g. Halogen-free and Pb-free compliant (RKZ-KG-P6 series).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; accepts reverse-bias voltage for Zener conduction |
| 2 | Anode | Connected to circuit ground or lower-potential rail; completes bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & Pb-free construction | Complies with RoHS Directive and JEDEC J-STD-020 moisture sensitivity level (MSL) requirements |
| Ultra-small URP package | Enables placement in space-constrained locations such as portable sensor modules and wearable electronics |
| Taped packaging (3,000 pcs/reel) | Supports automated SMT assembly without manual handling or orientation concerns |
| Stable Zener voltage at 5.1 V | Minimizes calibration drift in 5 V reference chains for ADCs, comparators, and LDO feedback dividers |
| High ESD immunity (±30 kV) | Reduces need for external TVS components in I/O protection schemes for industrial control interfaces |
Applications
| Microcontroller Reset Circuit | ADC Reference Stabilization |
|---|---|
Use Scenario: Provides clean, noise-immune 5.1 V reference to microcontroller reset ICs (e.g., MAX809) in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Zener diode acts as precision shunt regulator, holding reset threshold voltage stable despite supply ripple. Use Value: Ensures reliable power-on reset assertion across temperature and aging, preventing firmware lockup due to marginal VCC thresholds. |
Use Scenario: Supplies stable bias to the reference input of 12-bit SAR ADCs in industrial sensor signal conditioning boards. IC Role / Device Role / Timing Role: Functions as low-noise, low-drift voltage clamp to define full-scale ADC input range. Use Value: Limits reference error contribution to <0.5 LSB over –40°C to +85°C, preserving measurement accuracy. |
| ESD Protection for Low-Speed I/O | Optocoupler Bias Network |
Use Scenario: Placed across UART TX/RX lines in medical diagnostic equipment to absorb contact ESD pulses before they reach transceivers. IC Role / Device Role / Timing Role: Shunt clamping element that activates above 5.2 V to divert transient energy to ground. Use Value: Passes IEC 61000-4-2 Level 4 (±8 kV contact) without degradation, eliminating need for discrete TVS arrays. |
Use Scenario: Sets forward current for LED side of linear optocouplers (e.g., IL300) in isolated analog feedback loops. IC Role / Device Role / Timing Role: Acts as current-limiting and voltage-stabilizing element in constant-current source configuration. Use Value: Maintains LED drive current stability within ±3% over line voltage variation, improving isolation gain accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5231B-7-F (Diodes Inc.) | Same 5.1 V nominal Zener, but 225 mW Pd, 17 Ω rd, SOT-23 package (larger than URP) | Higher regulation stiffness; less suitable for ultra-dense layouts where RKZ5.1B2KG-P#P1's URP saves board area | Select when tighter dynamic regulation is prioritized over footprint size and ESD rating |
| BZX84-C5V1 (Nexperia) | 5.1 V Zener, 350 mW Pd, 60 Ω rd, SOT-23; no specified HBM ESD rating | Higher power handling but lacks documented ±30 kV ESD robustness; requires external protection in harsh environments | Choose for cost-sensitive consumer applications where ESD immunity is secondary to price and availability |
Compared with MMBZ5231B-7-F and BZX84-C5V1, RKZ5.1B2KG-P#P1 offers superior ESD resilience and the smallest standardized footprint among 5.1 V Zeners, making it optimal for miniaturized, field-deployed electronics requiring long-term reliability without added protection components.
Availability
RKZ5.1B2KG-P#P1 is available at Aetrix Electronics and suitable for voltage reference design, ESD protection networks, and low-power bias stabilization requiring stable component supply, halogen-free compliance, and compact SMT integration.
Supply support for RKZ5.1B2KG-P#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 timing solutions for industrial, automotive, and infrastructure markets.
RKZ5.1B2KG-P#P1 belongs to the RKZ-KG Series - a family of halogen-free, ultra-miniature Zener diodes engineered specifically for surge absorption and precision voltage stabilization in space-constrained, high-reliability embedded systems.
FAQ
What is the Zener voltage tolerance of RKZ5.1B2KG-P#P1 at 5 mA test current?
The RKZ5.1B2KG-P#P1 has a guaranteed Zener voltage range of 4.98 V to 5.20 V at IZ = 5 mA, corresponding to ±2.2% tolerance about the nominal 5.1 V value. This tight specification supports accurate voltage referencing in analog front-ends and reset circuits without post-production trimming.
Does RKZ5.1B2KG-P#P1 meet RoHS and halogen-free requirements?
Yes, RKZ5.1B2KG-P#P1 is part of the RKZ-KG-P6 Series and is explicitly certified halogen-free and Pb-free per JEDEC standards. Its material composition complies with EU RoHS Directive 2011/65/EU and satisfies industry requirements for environmentally conscious manufacturing.
What is the maximum allowable junction temperature for RKZ5.1B2KG-P#P1?
The maximum junction temperature (Tj) for RKZ5.1B2KG-P#P1 is 150°C. This rating applies under steady-state conditions with proper PCB thermal relief; derating is required above 25°C ambient per the curve in Fig.3 of the datasheet to maintain reliability.
Can RKZ5.1B2KG-P#P1 be used as a standalone ESD protection device on a 5 V data line?
RKZ5.1B2KG-P#P1 provides ±30 kV HBM ESD capability and clamps above ~5.2 V, making it effective for low-energy ESD suppression on 5 V logic lines. However, it is not rated for IEC 61000-4-2 system-level surges alone; pairing with a series current-limiting resistor is recommended for robust protection.
What is the package type and dimensions of RKZ5.1B2KG-P#P1?
RKZ5.1B2KG-P#P1 uses the URP (Ultra small Resin Package), also known as SC-76A, with dimensions of 1.70 mm (L) × 1.25 mm (W) × 0.45 mm (H). Its JEITA package code is PTSP0002ZA-A, and it features a two-terminal surface-mount configuration with cathode marking.
RKZ5.1B2KG-P#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:
- -
RKZ5.1B2KG-P#P1 FAQ
1.How can I place an order for RKZ5.1B2KG-P#P1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ5.1B2KG-P#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 RKZ5.1B2KG-P#P1 reliable?
The price and inventory of RKZ5.1B2KG-P#P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ5.1B2KG-P#P1 is usually 5 days.
3.What payment methods are accepted for RKZ5.1B2KG-P#P1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ5.1B2KG-P#P1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ5.1B2KG-P#P1?
RKZ5.1B2KG-P#P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ5.1B2KG-P#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 RKZ5.1B2KG-P#P1?
For technical support, including RKZ5.1B2KG-P#P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ5.1B2KG-P#P1 requirements.
6.How does Aetrix verify that RKZ5.1B2KG-P#P1 is sourced from the original manufacturer or authorized distributors?
All RKZ5.1B2KG-P#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 RKZ5.1B2KG-P#P1 meets industry standards.
7.What is the process for return or replacement of RKZ5.1B2KG-P#P1?
All RKZ5.1B2KG-P#P1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ5.1B2KG-P#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 RKZ5.1B2KG-P#P1 part is unused and in its original packaging.
Return procedure for RKZ5.1B2KG-P#P1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ5.1B2KG-P#P1 Tags
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