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Renesas RKZ24B2KJ#R1
- Part No.:
- RKZ24B2KJ#R1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ24B2KJ#R1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:136,000
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Product details
Overview
RKZ24B2KJ#R1 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 24.3 V (min 23.72 V, max 24.78 V) at 5 mA test current, with dynamic resistance of 60 Ω, 2 mW reverse leakage at 19.0 V, and ESD capability of ±15 kV (IEC 61000-4-2, C = 150 pF, R = 330 Ω). It is used in voltage reference circuits for sensor signal conditioning and microcontroller I/O protection.
For engineers reviewing the RKZ24B2KJ#R1 datasheet, RKZ24B2KJ#R1 pinout, RKZ24B2KJ#R1 application, or RKZ24B2KJ#R1 equivalent, key selection criteria include its 24.3 V stabilization tolerance, ultra-low-profile UFP package compatibility with high-density SMT layouts, 150 mW power rating at 25°C, and verified ±15 kV ESD robustness - critical for industrial sensor interfaces and automotive body-control module inputs.
Technical Context
This device operates as a two-terminal voltage reference and clamping element, leveraging silicon planar junction technology to maintain stable reverse breakdown behavior under DC and transient conditions. Its design targets low-current regulation (IZ = 5 mA), tight VZ tolerance (±2.2%), and predictable temperature coefficient (≈+0.06 %/°C per Fig.2).
The RKZ24B2KJ#R1 is optimized for surface-mount applications requiring minimal board space and high reliability in ambient temperatures up to +125°C. Its non-repetitive surge reverse power rating exceeds 1 W for 1-ms pulses (per Fig.4), supporting transient suppression in 24 V supply rails without external series impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.72–24.78 V at IZ = 5 mA - ensures stable 24 V reference within ±2.2% tolerance for precision analog sensing. |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 5 mA - limits output voltage variation under load current changes in feedback networks. |
| Reverse Leakage (IR) | 2 μA max at VR = 19.0 V - guarantees minimal quiescent current draw in always-on monitoring circuits. |
| Power Dissipation (Pd) | 150 mW at Ta = 25°C - supports continuous operation in thermally constrained PCB areas without forced cooling. |
| ESD Capability | ±15 kV (HBM, C = 150 pF, R = 330 Ω) - provides intrinsic I/O-level ESD protection without additional TVS components. |
| Junction Temperature (Tj) | 150°C max - enables reliable operation in under-hood automotive or industrial control enclosures. |
| Package | UFP (Ultra small Flat Lead), JEITA code PWSF0002ZA-A - 1.7 × 1.2 × 0.6 mm footprint ideal for 0603-equivalent layouts. |
Pinout & Package
Package: Ultra small Flat Lead (UFP), JEITA code PWSF0002ZA-A, Renesas code SC-79 variant; dimensions 1.7 mm × 1.2 mm × 0.6 mm; mass 0.0016 g; cathode-marked top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node or positive rail; reverse-biased terminal during Zener operation. |
| 2 | Anode | Connected to ground or lower-potential reference; completes current path during clamping or regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Emboss taping reel packaging | Enables high-speed automated placement on SMT lines with zero manual handling or orientation errors. |
| Ultra-small UFP package | Reduces PCB area by >40% vs. SOD-323, supporting miniaturized IoT sensor nodes and wearable electronics. |
| Stable Zener voltage with low tempco | +0.06 %/°C typical (per Fig.2) ensures <±1% drift over −40°C to +85°C ambient in unregulated environments. |
| High ESD immunity | ±15 kV HBM rating eliminates need for discrete ESD diodes on 24 V sensor inputs in factory automation systems. |
| Non-repetitive surge capability | Withstands 1.0 W for 1 ms (Fig.4), protecting downstream ADCs and comparators from inductive kick in solenoid drivers. |
Applications
| Industrial Sensor Reference | Automotive Body Control Input Protection |
|---|---|
Use Scenario: Providing stable 24 V reference for resistive temperature detector (RTD) bridge excitation in PLC analog input modules. IC Role / Device Role / Timing Role: Two-terminal voltage reference maintaining fixed bias point independent of supply ripple. Use Value: Enables 0.1% measurement accuracy over temperature due to tight VZ tolerance and low rd. |
Use Scenario: Clamping CAN transceiver VCC pins against load-dump transients in door module ECUs. IC Role / Device Role / Timing Role: Fast-acting shunt clamp absorbing energy during ISO 7637-2 Pulse 5a events. Use Value: Prevents latch-up in 5 V LDOs by limiting rail voltage to ≤25 V during 100 ms surges. |
| Low-Power IoT Node Biasing | Medical Instrument Signal Conditioning |
Use Scenario: Generating precise 24 V bias for MEMS pressure sensor ASICs in battery-powered portable diagnostics. IC Role / Device Role / Timing Role: Low-quiescent-current Zener regulator supplying clean analog domain power. Use Value: Draws only 2 μA leakage at 19 V, extending coin-cell life beyond 5 years in sleep mode. |
Use Scenario: Stabilizing reference voltage for 24-bit delta-sigma ADCs in patient-monitor ECG front-ends. IC Role / Device Role / Timing Role: Precision voltage source defining full-scale input range for differential amplifiers. Use Value: Delivers <10 ppm/°C effective tempco via circuit layout and thermal coupling, meeting IEC 60601-1 stability requirements. |
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 |
|---|---|---|---|
| BZX84-C24LT1G | 24 V nominal, ±5% tolerance (22.8–25.2 V), 350 mW Pd, SOT-23 package (2.9 × 1.3 × 1.0 mm) | Larger footprint; higher power but looser VZ tolerance; no specified ESD rating | Select when higher surge energy handling is required and board space allows larger package. |
| MMSZ5245B-TP | 24 V nominal, ±5% tolerance (22.8–25.2 V), 500 mW Pd, SOD-123 package (3.7 × 1.6 × 1.1 mm) | 3× larger footprint; higher leakage (10 μA @ 19.2 V); no ESD data published | Choose for cost-sensitive consumer applications where ESD immunity is not mandated and thermal margin is critical. |
Compared with BZX84-C24LT1G and MMSZ5245B-TP, the RKZ24B2KJ#R1 offers tighter 2.2% VZ tolerance, smaller UFP footprint, and guaranteed ±15 kV ESD performance - making it preferable for space-constrained, high-reliability industrial and automotive signal chains where reference stability and robustness are prioritized over raw power dissipation.
Availability
RKZ24B2KJ#R1 is available at Aetrix Electronics and suitable for industrial sensor reference, automotive body control input protection, and low-power IoT node biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for RKZ24B2KJ#R1 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 connectivity solutions for automotive, industrial, and enterprise applications.
The RKZ-KJ Series is part of Renesas' precision discrete portfolio, engineered specifically for compact, high-stability voltage reference and surge suppression in space-constrained, high-reliability electronic systems.
FAQ
What is the Zener voltage tolerance of RKZ24B2KJ#R1?
The RKZ24B2KJ#R1 has a Zener voltage range of 23.72 V to 24.78 V at 5 mA test current, corresponding to a ±2.2% tolerance around the nominal 24.3 V value. This tight specification is confirmed in the Electrical Characteristics table on page 2 of the REJ03G1588-0100 datasheet and enables high-accuracy voltage referencing without post-calibration trimming in RKZ24B2KJ#R1-based designs.
Does RKZ24B2KJ#R1 support high-temperature operation?
Yes, RKZ24B2KJ#R1 is rated for junction temperatures up to 150°C and storage temperatures from −55°C to +150°C. Its power derating curve (Fig.3) shows usable dissipation down to 50 mW at +100°C ambient, making RKZ24B2KJ#R1 suitable for under-hood automotive modules and industrial motor drives where thermal management is limited.
What is the package type and size of RKZ24B2KJ#R1?
RKZ24B2KJ#R1 uses the Ultra small Flat Lead (UFP) package, JEITA code PWSF0002ZA-A, with dimensions of 1.7 mm × 1.2 mm × 0.6 mm and mass of 0.0016 g. This SC-79-compatible footprint is documented on page 6 of the REJ03G1588-0100 datasheet and enables high-density placement in space-critical applications such as wearable medical sensors and compact industrial controllers using RKZ24B2KJ#R1.
How does RKZ24B2KJ#R1 perform under ESD stress?
RKZ24B2KJ#R1 is rated for ±15 kV human-body-model (HBM) ESD per IEC 61000-4-2 (C = 150 pF, R = 330 Ω, 10 pulses in both directions), as specified in the Electrical Characteristics table on page 2. This validated immunity allows RKZ24B2KJ#R1 to serve as primary ESD protection on 24 V sensor inputs without supplemental diodes in factory automation equipment.
Can RKZ24B2KJ#R1 be used for transient voltage suppression?
Yes, RKZ24B2KJ#R1 supports non-repetitive surge reverse power up to 1.0 W for 1 ms (Fig.4), enabling clamping of short-duration transients like inductive switch-off spikes in 24 V solenoid drivers. However, it is not intended for repetitive surge duty; RKZ24B2KJ#R1 should be paired with appropriate series impedance for sustained overvoltage events.
RKZ24B2KJ#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:
- -
RKZ24B2KJ#R1 FAQ
1.How can I place an order for RKZ24B2KJ#R1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ24B2KJ#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 RKZ24B2KJ#R1 reliable?
The price and inventory of RKZ24B2KJ#R1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ24B2KJ#R1 is usually 5 days.
3.What payment methods are accepted for RKZ24B2KJ#R1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ24B2KJ#R1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ24B2KJ#R1?
RKZ24B2KJ#R1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ24B2KJ#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 RKZ24B2KJ#R1?
For technical support, including RKZ24B2KJ#R1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ24B2KJ#R1 requirements.
6.How does Aetrix verify that RKZ24B2KJ#R1 is sourced from the original manufacturer or authorized distributors?
All RKZ24B2KJ#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 RKZ24B2KJ#R1 meets industry standards.
7.What is the process for return or replacement of RKZ24B2KJ#R1?
All RKZ24B2KJ#R1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ24B2KJ#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 RKZ24B2KJ#R1 part is unused and in its original packaging.
Return procedure for RKZ24B2KJ#R1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ24B2KJ#R1 Tags
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BZT52C5V6T-7
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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