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Renesas RKZ3.3B2KJ#R1
- Part No.:
- RKZ3.3B2KJ#R1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ3.3B2KJ#R1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:117,258
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Product details
Overview
RKZ3.3B2KJ 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 3.3 V (3.25–3.50 V), with 20 µA maximum reverse current at 1.0 V, 130 Ω dynamic resistance at 5 mA, and 30 kV ESD capability per IEC 61000-4-2 (C = 150 pF, R = 330 Ω). It is used in voltage reference circuits for microcontroller reset supervision and sensor biasing.
For engineers reviewing the RKZ3.3B2KJ datasheet, RKZ3.3B2KJ pinout, RKZ3.3B2KJ application, or RKZ3.3B2KJ equivalent, this device serves as a compact, surface-mount voltage clamp and regulator in space-constrained consumer, industrial, and communication electronics where stable low-voltage reference and robust ESD immunity are required.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its ultra-small Flat Lead Package (UFP, JEITA code PWSF0002ZA-A) enables high-density PCB layouts while supporting reflow soldering.
The device exhibits a negative temperature coefficient near 3.3 V - typical for low-voltage Zeners - and is rated for 150 mW power dissipation on a standard PCB at 25°C ambient. Its non-repetitive surge reverse power rating supports transient suppression in low-energy signal lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.25–3.50 V at IZ = 5 mA - defines tight regulation window for 3.3 V system references. |
| Reverse Current (IR) | ≤20 µA at VR = 1.0 V - ensures minimal leakage in standby or high-impedance bias networks. |
| Dynamic Resistance (rd) | 130 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity. |
| Power Dissipation (Pd) | 150 mW at Ta = 25°C on PCB - sets thermal design limit for continuous operation. |
| ESD Capability | 30 kV (HBM, C = 150 pF, R = 330 Ω, both polarities) - provides robust protection against human-body model discharges. |
| Junction Temperature (Tj) | −55 to +150°C - supports operation across extended industrial temperature ranges. |
Pinout & Package
Package: Ultra-small Flat Lead (UFP), JEITA code PWSF0002ZA-A, SC-79 compatible, mass ≈ 0.0016 g. Dimensions: 1.10 mm × 1.70 mm × 0.80 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node; reverse-biased terminal where Zener breakdown occurs. |
| 2 | Anode | Connected to lower-potential node (typically ground); completes bias path during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount UFP package | Enables automated assembly and <1.7 mm² board footprint for miniaturized designs. |
| Emboss taping reel packaging | Supports high-speed pick-and-place placement with industry-standard tape dimensions. |
| 30 kV ESD rating | Eliminates need for external ESD protection in low-speed I/O and sensor interface lines. |
| 150 mW power rating | Suitable for low-current reference and clamping applications without heatsinking. |
Applications
| Microcontroller Reset Circuit | Temperature Sensor Biasing |
|---|---|
|
Use Scenario: Provides stable 3.3 V reference to monitor supply rail and trigger reset when voltage drops below threshold. IC Role / Device Role / Timing Role: Voltage reference and comparator input conditioning element. Use Value: Ensures deterministic reset behavior with ±0.125 V tolerance over temperature, minimizing false resets. |
Use Scenario: Supplies precise bias current to analog temperature sensors (e.g., thermistors or bandgap-based ICs) operating from 3.3 V rails. IC Role / Device Role / Timing Role: Low-drift, low-noise current source via series resistor + Zener regulation. Use Value: Reduces sensor output drift by stabilizing excitation voltage against supply variation and temperature. |
| USB Interface Line Protection | Low-Power ADC Reference Clamp |
|
Use Scenario: Clamps transient voltages on USB D+/D− lines to prevent damage to host/device PHYs during ESD events. IC Role / Device Role / Timing Role: Bidirectional ESD suppressor and voltage limiter. Use Value: Withstands 30 kV contact discharge without degradation, preserving signal integrity up to 480 Mbps. |
Use Scenario: Limits input voltage to 3.3 V reference pins of 12-bit SAR ADCs in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Overvoltage protection and rail stabilization for precision reference inputs. Use Value: Prevents ADC reference corruption during brown-out or hot-swap events, maintaining <±0.5 LSB accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage stabilization applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C3V3 (Nexperia) | Same 3.3 V nominal Zener, but 300 mW Pd, 90 Ω rd, SOD-323 package (1.7 × 1.3 mm). | Higher power handling suits higher-current biasing; larger footprint may impact ultra-dense layouts. | Select when >150 mW dissipation margin or lower dynamic resistance is required. |
| MMSZ4685 (ON Semiconductor) | 3.3 V Zener, 500 mW Pd, 100 Ω rd, SOD-123 package (3.7 × 1.6 mm), no specified ESD rating. | Larger size and lack of documented ESD performance limit use in ESD-prone interfaces. | Prefer for cost-sensitive, non-ESD-critical biasing where board area is not constrained. |
Compared with BZX584-C3V3 and MMSZ4685, RKZ3.3B2KJ offers the smallest footprint and highest certified ESD immunity (30 kV), making it optimal for space-limited, high-reliability signal conditioning - though its 150 mW rating requires careful thermal design in sustained-clamp scenarios.
Availability
RKZ3.3B2KJ is available at Aetrix Electronics and suitable for microcontroller reset supervision, sensor biasing, USB line protection, and low-power ADC reference clamping requiring stable component supply and consistent parametric performance across production batches.
Supply support for RKZ3.3B2KJ 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 automotive, industrial, and infrastructure markets.
The RKZ-KJ Series is part of Renesas' discrete protection portfolio, engineered specifically for compact, high-reliability voltage stabilization and surge absorption in portable and embedded systems with strict size and ESD requirements.
FAQ
What is the Zener voltage tolerance of RKZ3.3B2KJ at 5 mA test current?
The RKZ3.3B2KJ has a guaranteed Zener voltage range of 3.25 V to 3.50 V when tested at IZ = 5 mA and Ta = 25°C. This ±0.125 V tolerance (±3.8%) ensures predictable regulation in 3.3 V system references without additional trimming components. The specification is verified per Renesas datasheet REJ03G1588-0100 Rev.1.00.
Does RKZ3.3B2KJ support reflow soldering, and what is its maximum lead temperature?
Yes, RKZ3.3B2KJ is qualified for standard Pb-free reflow soldering per J-STD-020. Its UFP package withstands peak temperatures up to 260°C for ≤10 seconds. The lead material is exposed at the cutting plane, ensuring reliable wetting without special pre-treatment - critical for high-yield manufacturing of RKZ3.3B2KJ in automated SMT lines.
What is the maximum reverse current specification for RKZ3.3B2KJ, and at what voltage is it measured?
RKZ3.3B2KJ specifies a maximum reverse current (IR) of 20 µA at a reverse voltage (VR) of 1.0 V and Ta = 25°C. This low leakage ensures minimal power loss in high-impedance bias networks and preserves accuracy in precision reference applications where RKZ3.3B2KJ is commonly deployed.
Is RKZ3.3B2KJ suitable for ESD protection in USB 2.0 data lines?
Yes, RKZ3.3B2KJ is rated for 30 kV ESD (IEC 61000-4-2, C = 150 pF, R = 330 Ω, both polarities), making it suitable for protecting low-speed and full-speed USB 2.0 D+/D− lines. Its low capacitance (inherent to UFP geometry) and fast response preserve signal integrity up to 480 Mbps - a key advantage of RKZ3.3B2KJ in interface protection.
What is the thermal derating behavior of RKZ3.3B2KJ above 25°C ambient?
RKZ3.3B2KJ's power dissipation derates linearly above 25°C ambient: Pd decreases by 1.2 mW/°C beyond 25°C, reaching zero at 150°C junction temperature. This allows accurate thermal design for RKZ3.3B2KJ in enclosed or high-temperature environments using standard PCB copper area for heat spreading.
RKZ3.3B2KJ#R1 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:
- -
RKZ3.3B2KJ#R1 FAQ
1.How can I place an order for RKZ3.3B2KJ#R1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ3.3B2KJ#R1 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 RKZ3.3B2KJ#R1 reliable?
The price and inventory of RKZ3.3B2KJ#R1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ3.3B2KJ#R1 is usually 5 days.
3.What payment methods are accepted for RKZ3.3B2KJ#R1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ3.3B2KJ#R1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ3.3B2KJ#R1?
RKZ3.3B2KJ#R1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ3.3B2KJ#R1 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 RKZ3.3B2KJ#R1?
For technical support, including RKZ3.3B2KJ#R1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ3.3B2KJ#R1 requirements.
6.How does Aetrix verify that RKZ3.3B2KJ#R1 is sourced from the original manufacturer or authorized distributors?
All RKZ3.3B2KJ#R1 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 RKZ3.3B2KJ#R1 meets industry standards.
7.What is the process for return or replacement of RKZ3.3B2KJ#R1?
All RKZ3.3B2KJ#R1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ3.3B2KJ#R1, 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 RKZ3.3B2KJ#R1 part is unused and in its original packaging.
Return procedure for RKZ3.3B2KJ#R1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ3.3B2KJ#R1 Tags
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