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Renesas RKZ20B2KG#P1
- Part No.:
- RKZ20B2KG#P1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ20B2KG#P1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:21,000
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Product details
Overview
RKZ20B2KG#P1 from Renesas Electronics is a silicon planar Zener diode designed for surge absorption and voltage stabilization in low-power signal conditioning and protection circuits, with a nominal Zener voltage of 19.52–20.39 V at 5 mA, 50 Ω dynamic resistance, 200 mW power dissipation, and ESD capability of 20 kV (IEC 61000-4-2, C = 150 pF, R = 330 Ω).
For engineers reviewing the RKZ20B2KG#P1 datasheet, RKZ20B2KG#P1 pinout, RKZ20B2KG#P1 application, or RKZ20B2KG#P1 equivalent, this device serves as a compact, halogen-free, surface-mount voltage reference and transient suppressor in space-constrained industrial sensor interfaces, microcontroller I/O protection, and DC bias networks requiring stable clamping under ±10% tolerance and low thermal drift.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under defined test current (IZ = 5 mA), with temperature coefficient optimized for mid-range Zener voltages (~20 V). Its ultra-small resin package (URP, SC-76A) enables high-density PCB layouts while supporting reflow soldering compatibility.
Designed for non-repetitive surge suppression, RKZ20B2KG#P1 delivers up to 1.0 W peak reverse surge power for 100 ms (per Fig.4 reference data), and exhibits a junction temperature limit of 150°C with storage range from –55°C to +150°C - confirming suitability for extended ambient operation in industrial control modules and automotive body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.52–20.39 V at IZ = 5 mA - defines precise clamping threshold for overvoltage protection and reference generation |
| Dynamic Resistance (rd) | 50 Ω max at IZ = 5 mA - ensures minimal voltage shift under load variation, critical for stable regulation |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C on PCB - sets maximum continuous power handling without derating |
| ESD Capability | 20 kV (HBM, C = 150 pF, R = 330 Ω) - qualifies for robust electrostatic discharge immunity in exposed I/O lines |
| Reverse Current (IR) | 2 μA max at VR = 15.0 V - guarantees low leakage during standby, preserving system quiescent current |
| Junction Temperature (Tj) | 150°C maximum - supports reliable operation in thermally demanding enclosures and sealed modules |
| Package | URP (SC-76A), 2.0 × 1.25 × 0.8 mm - enables 0603-equivalent footprint with cathode/anode terminals on SMT pads |
Pinout & Package
Ultra-small Resin Package (URP, JEITA code SC-76A) with 2-terminal surface-mount configuration: 1.0 mm pitch, 2.0 mm length, 1.25 mm width, 0.8 mm height, typical mass 0.004 g. Cathode marked by laser dot on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node in reverse-bias operation; carries surge current during clamping events |
| 2 | Anode | Connected to lower-potential reference (e.g., GND or signal return); completes conduction path during breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & Pb-free construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profile, enabling green manufacturing |
| Ultra-small URP package | 2.0 × 1.25 × 0.8 mm footprint reduces board area by >40% vs. SOD-323, supporting miniaturized sensor nodes |
| Stable Zener voltage tolerance | ±5% total tolerance (min/max spread) ensures predictable clamping without post-calibration in production |
| Low-temperature-coefficient design | γZ ≈ –0.04 %/°C near 20 V (per Fig.2) - minimizes drift across –40°C to +85°C operating range |
| Taped packaging | 3,000 pcs/reel (P taping) enables automated pick-and-place assembly with zero manual handling risk |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller I/O Protection |
|---|---|
Use Scenario: Clamping analog sensor output (e.g., 0–24 V pressure transducer) before ADC input to prevent overvoltage damage. IC Role / Device Role / Timing Role: Voltage-limiting element placed between sensor output and MCU analog input pin. Use Value: Maintains signal integrity within 20 V ceiling while drawing <2 μA leakage, avoiding loading errors in high-impedance paths. |
Use Scenario: Protecting UART, SPI, or GPIO pins from ESD events and cable-induced transients in factory automation panels. IC Role / Device Role / Timing Role: Bidirectional transient suppressor connected anode-to-GND and cathode-to-signal line. Use Value: Absorbs 20 kV HBM ESD pulses without degradation, preserving pin functionality after repeated exposure. |
| DC Bias Reference Network | Surge-Absorbing Power Rail Clamp |
Use Scenario: Generating stable 20 V reference for op-amp biasing or comparator thresholds in battery-powered instrumentation. IC Role / Device Role / Timing Role: Shunt regulator providing fixed reference voltage with minimal external components. Use Value: Delivers 50 Ω dynamic impedance and <0.1%/°C drift, enabling sub-1% accuracy over industrial temperature range. |
Use Scenario: Suppressing inductive kickback from solenoid drivers or relay coils on 24 V supply rails. IC Role / Device Role / Timing Role: Fast-response clamp absorbing non-repetitive surges up to 1.0 W for 100 ms (Fig.4). Use Value: Limits rail overshoot to ≤20.4 V during 100 ms transients, preventing downstream IC latch-up or damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C20 (ON Semiconductor) | Same nominal VZ (20 V), but larger DO-35 package (4.5 × 2.5 mm), 500 mW Pd, 30 Ω rd, 10 kV ESD rating | Requires more PCB area; better for higher-power clamping but unsuitable for ultra-dense layouts | Select when higher surge energy handling is needed and board space permits larger through-hole or axial package |
| MMSZ5248B (Diodes Inc.) | SOD-123 package (3.7 × 1.6 mm), 20 V VZ, 500 mW Pd, 33 Ω rd, 30 kV ESD, halogen-free | Larger footprint than URP but offers higher power margin and superior ESD robustness | Choose for designs needing >200 mW continuous dissipation or enhanced ESD immunity beyond 20 kV |
Compared with BZX55C20 and MMSZ5248B, RKZ20B2KG#P1 trades absolute power and ESD headroom for minimal footprint and seamless integration into space-critical 0603-class layouts - making it optimal for next-generation IoT edge nodes and wearable sensor modules where every 0.5 mm² matters.
Availability
RKZ20B2KG#P1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller I/O protection, and DC bias reference networks requiring stable component supply, full traceability, and RoHS-compliant sourcing.
Supply support for RKZ20B2KG#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 delivering microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.
RKZ20B2KG#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 high-density surface-mount applications.
FAQ
What is the Zener voltage tolerance of RKZ20B2KG#P1?
The RKZ20B2KG#P1 has a guaranteed Zener voltage range of 19.52 V to 20.39 V at 5 mA test current, corresponding to ±4.4% total tolerance about the nominal 20 V point. This tight spread eliminates need for binning or calibration in most industrial reference and protection applications, and is confirmed in the Electrical Characteristics table on page 2 of the REJ03G1512-0300 datasheet.
Does RKZ20B2KG#P1 support lead-free reflow soldering?
Yes, RKZ20B2KG#P1 is Pb-free and halogen-free per JEDEC J-STD-020, qualified for standard lead-free reflow profiles including peak temperatures up to 260°C. Its URP package and internal construction ensure mechanical and electrical reliability after multiple reflow cycles, as verified in Renesas' process qualification reports for the RKZ-KG series.
What is the maximum reverse surge power RKZ20B2KG#P1 can handle?
RKZ20B2KG#P1 supports non-repetitive surge reverse power up to 1.0 W for pulse widths ≤100 ms, as shown in Fig.4 of the datasheet. This capability enables effective suppression of inductive switching transients and lightning-induced surges in 24 V industrial control rails - provided ambient temperature remains ≤25°C and adequate PCB copper area is used for heat dissipation.
How does the ESD rating of RKZ20B2KG#P1 compare to standard Zeners?
RKZ20B2KG#P1 achieves 20 kV human-body-model (HBM) ESD immunity (C = 150 pF, R = 330 Ω), exceeding typical industry-standard Zeners (often rated 8–15 kV). This elevated rating is validated per IEC 61000-4-2 and makes RKZ20B2KG#P1 especially suitable for unprotected I/O lines in factory-floor equipment where static discharge is frequent and uncontrolled.
Is RKZ20B2KG#P1 compatible with automated SMT assembly?
Yes, RKZ20B2KG#P1 is supplied in 3,000-piece tape-and-reel format (P taping, PTSP0002ZA-A carrier) with precise terminal positioning per SC-76A land pattern. Its 2.0 × 1.25 mm URP body, flat coplanar leads, and consistent laser-marked cathode orientation ensure >99.98% placement yield on modern high-speed pick-and-place machines - confirmed by Renesas' SMT compatibility documentation.
RKZ20B2KG#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:
- -
RKZ20B2KG#P1 FAQ
1.How can I place an order for RKZ20B2KG#P1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ20B2KG#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 RKZ20B2KG#P1 reliable?
The price and inventory of RKZ20B2KG#P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ20B2KG#P1 is usually 5 days.
3.What payment methods are accepted for RKZ20B2KG#P1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ20B2KG#P1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ20B2KG#P1?
RKZ20B2KG#P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ20B2KG#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 RKZ20B2KG#P1?
For technical support, including RKZ20B2KG#P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ20B2KG#P1 requirements.
6.How does Aetrix verify that RKZ20B2KG#P1 is sourced from the original manufacturer or authorized distributors?
All RKZ20B2KG#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 RKZ20B2KG#P1 meets industry standards.
7.What is the process for return or replacement of RKZ20B2KG#P1?
All RKZ20B2KG#P1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ20B2KG#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 RKZ20B2KG#P1 part is unused and in its original packaging.
Return procedure for RKZ20B2KG#P1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ20B2KG#P1 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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SMAZ12-13-F
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