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Renesas RKZ22B2KG#P1
- Part No.:
- RKZ22B2KG#P1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ22B2KG#P1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:72,000
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Product details
Overview
RKZ22B2KG#P1 from Renesas Electronics is a silicon planar Zener diode designed for surge absorption and voltage stabilization in low-power signal and bias circuits. It delivers a nominal Zener voltage of 22.0 V (min 21.54 V, max 22.47 V) at 5 mA, with dynamic resistance of 55 Ω, 200 mW power dissipation, and ESD capability of ±20 kV (IEC61000-4-2, C = 150 pF, R = 330 Ω). It is used in overvoltage protection for sensor interfaces and microcontroller I/O clamping.
For engineers reviewing the RKZ22B2KG#P1 datasheet, RKZ22B2KG#P1 pinout, RKZ22B2KG#P1 application, or RKZ22B2KG#P1 equivalent, key selection criteria include its 22 V stabilization tolerance, ultra-small URP package footprint, low leakage (<2 µA at 17 V), and suitability for compact PCB layouts requiring high-density SMT placement without thermal derating concerns up to 85°C ambient.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable reference voltage under transient surges or supply variations. Its planar junction structure ensures consistent VZ temperature coefficient (≈+0.04 %/°C near 22 V, per Fig.2), and it is rated for non-repetitive surge reverse power up to ~1.2 W for 10 ms (Fig.4 interpolation).
The device is optimized for surface-mount applications where board space is constrained: the URP (Ultra small Resin Package) measures 1.10 × 1.85 × 0.45 mm (L×W×H), features SC-76A outline, and uses Pb-free & halogen-free construction compliant with JEITA code PTSP0002ZA-A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.54–22.47 V at IZ = 5 mA - defines precise clamping threshold for 22 V rail protection |
| Dynamic Resistance (rd) | 55 Ω max at IZ = 5 mA - determines output impedance and regulation sensitivity to current changes |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C - sets maximum continuous DC power handling on standard PCB |
| Reverse Current (IR) | ≤2 µA at VR = 17.0 V - ensures minimal leakage in standby or high-impedance sensing nodes |
| ESD Capability | ±20 kV (IEC61000-4-2, C=150 pF, R=330 Ω) - provides robust input-stage ESD immunity without external TVS |
| Junction Temperature (Tj) | 150°C max - supports operation in thermally demanding industrial enclosures |
Pinout & Package
Package: Ultra small Resin Package (URP), SC-76A outline, JEITA code PTSP0002ZA-A, dimensions 1.10 × 1.85 × 0.45 mm (L×W×H), mass 0.004 g, tape-and-reel (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node; reverse-bias anode-to-cathode voltage triggers Zener conduction |
| 2 | Anode | Connected to lower-potential node (e.g., GND or signal return); completes current path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & Pb-free construction | Complies with RoHS Directive and JEDEC J-STD-020 moisture sensitivity level (MSL) 1 - enables lead-free reflow without delamination risk |
| Ultra-small URP package | 1.10 × 1.85 mm footprint - reduces PCB area by >40% vs. SOD-323, enabling high-density sensor module layouts |
| High ESD robustness | ±20 kV contact discharge rating - eliminates need for discrete ESD diodes in I/O protection networks |
| Stable Zener voltage tolerance | ±2.1% (21.54–22.47 V) at 5 mA - supports accurate voltage reference in precision analog front-ends |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller I/O Protection |
|---|---|
Use Scenario: Protecting 24 V industrial analog sensor outputs (e.g., 4–20 mA transmitters) from induced transients on long cable runs. IC Role / Device Role / Timing Role: Zener clamp limiting voltage excursion to ≤22.5 V, preventing damage to downstream op-amp inputs. Use Value: Eliminates need for larger TVS diodes while maintaining <2 µA leakage at 17 V, preserving sensor accuracy and battery life in loop-powered systems. |
Use Scenario: Safeguarding GPIO pins of ARM Cortex-M microcontrollers against ESD events and accidental 24 V miswiring. IC Role / Device Role / Timing Role: Fast-acting shunt element diverting surge current away from MCU input protection diodes. Use Value: Withstands ±20 kV ESD pulses and clamps 24 V faults to 22.5 V within nanoseconds, preventing latch-up and permanent I/O damage. |
| Low-Power Reference Voltage Source | Surge-Protected Bias Network |
Use Scenario: Generating a stable 22 V reference for high-side current sense amplifier biasing in battery management systems. IC Role / Device Role / Timing Role: Precision Zener providing regulated voltage with 55 Ω dynamic impedance for low-noise bias generation. Use Value: Enables <0.1% output drift over temperature (γZ ≈ +0.04 %/°C), critical for accurate current measurement across –40°C to +85°C. |
Use Scenario: Stabilizing gate bias voltage for high-voltage MOSFET drivers exposed to inductive kickback in motor control H-bridges. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing repetitive 10–100 ns spikes up to 1.2 W peak (10 ms pulse width). Use Value: Prevents driver IC failure without adding bulk capacitance, maintaining fast switching edge integrity in 20 kHz PWM applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C22LT1G (ON Semiconductor) | Same 22 V nominal VZ, but SOT-23 package (2.9 × 1.3 × 1.0 mm); rd = 50 Ω; Pd = 300 mW; ESD = ±8 kV | Larger footprint; higher power rating but lower ESD robustness; requires more PCB area | Select when higher continuous power margin is needed and board space allows SOT-23 |
| MMSZ5247B-TP (Micro Commercial Components) | SOD-123 package (3.7 × 1.6 × 1.1 mm); VZ = 22.0 V (±5%); rd = 35 Ω; Pd = 500 mW; ESD = ±15 kV | Looser VZ tolerance (±5% vs. ±2.1%), larger size, higher power - less suitable for precision clamping | Choose for cost-sensitive, non-precision surge suppression where tighter VZ tolerance is not required |
Compared with BZX84-C22LT1G and MMSZ5247B-TP, RKZ22B2KG#P1 offers superior ESD immunity (±20 kV), tighter voltage tolerance (±2.1%), and the smallest footprint (1.10 × 1.85 mm), making it optimal for space-constrained, high-reliability industrial I/O protection where precision clamping and robustness are prioritized over raw power rating.
Availability
RKZ22B2KG#P1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller I/O protection, and low-power reference voltage generation requiring stable component supply, full traceability, and RoHS-compliant sourcing.
Supply support for RKZ22B2KG#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.
The RKZ-KG Series is part of Renesas' discrete protection portfolio, engineered specifically for compact, high-reliability surge absorption and voltage stabilization in space-constrained industrial and IoT edge devices.
FAQ
What is the Zener voltage tolerance of RKZ22B2KG#P1 at 5 mA?
The RKZ22B2KG#P1 has a guaranteed Zener voltage range of 21.54 V to 22.47 V at IZ = 5 mA, corresponding to a ±2.1% tolerance around the nominal 22.0 V rating. This tight tolerance is confirmed in the Electrical Characteristics table on page 2 of the REJ03G1512-0300 datasheet and enables precise voltage clamping in sensitive analog circuits without additional trimming components.
Does RKZ22B2KG#P1 support lead-free reflow soldering?
Yes, RKZ22B2KG#P1 is explicitly specified as a halogen-free and Pb-free device (RKZ-KG P6 Series), compliant with RoHS Directive and qualified for standard lead-free reflow profiles (JEDEC J-STD-020 MSL 1). Its URP package withstands peak temperatures up to 260°C, making it compatible with automated SMT assembly lines using SAC305 solder paste.
What is the maximum reverse leakage current for RKZ22B2KG#P1?
The maximum reverse leakage current (IR) for RKZ22B2KG#P1 is 2 µA at VR = 17.0 V, as specified in the Electrical Characteristics table. This low leakage ensures minimal power loss and signal distortion in high-impedance bias networks and battery-powered sensor nodes where standby current must be tightly controlled.
Can RKZ22B2KG#P1 be used for ESD protection in USB or CAN interfaces?
RKZ22B2KG#P1 provides ±20 kV IEC61000-4-2 ESD protection, but its 22 V Zener voltage makes it unsuitable for direct USB (5 V) or CAN (dominant 0–3.5 V, recessive 2.0–5.0 V) line protection. It is intended for higher-voltage rails (e.g., 24 V industrial buses, sensor excitation supplies) where clamping above 20 V is acceptable and beneficial for system-level surge immunity.
What is the thermal derating behavior of RKZ22B2KG#P1 above 25°C ambient?
RKZ22B2KG#P1 follows linear thermal derating: its 200 mW power dissipation rating decreases by approximately 1.6 mW/°C above 25°C ambient, reaching zero at 150°C junction temperature (per Fig.3). At 85°C ambient, usable Pd is ~104 mW - sufficient for typical 5 mA Zener current applications with modest PCB copper area.
RKZ22B2KG#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:
- -
RKZ22B2KG#P1 FAQ
1.How can I place an order for RKZ22B2KG#P1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ22B2KG#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 RKZ22B2KG#P1 reliable?
The price and inventory of RKZ22B2KG#P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ22B2KG#P1 is usually 5 days.
3.What payment methods are accepted for RKZ22B2KG#P1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ22B2KG#P1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ22B2KG#P1?
RKZ22B2KG#P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ22B2KG#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 RKZ22B2KG#P1?
For technical support, including RKZ22B2KG#P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ22B2KG#P1 requirements.
6.How does Aetrix verify that RKZ22B2KG#P1 is sourced from the original manufacturer or authorized distributors?
All RKZ22B2KG#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 RKZ22B2KG#P1 meets industry standards.
7.What is the process for return or replacement of RKZ22B2KG#P1?
All RKZ22B2KG#P1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ22B2KG#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 RKZ22B2KG#P1 part is unused and in its original packaging.
Return procedure for RKZ22B2KG#P1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ22B2KG#P1 Tags
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MM5Z5V1ST1G
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