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Renesas RKZ36BKJ#R1
- Part No.:
- RKZ36BKJ#R1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ36BKJ#R1.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:280,000
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Product details
Overview
RKZ36BKJ#R1 from Renesas Electronics is a silicon planar Zener diode designed for surge absorption and voltage stabilization in low-power signal-line protection circuits, with a nominal Zener voltage of 36 V (34.0–38.0 V), 2 mA test current, 90 Ω dynamic resistance, 2 mW reverse current limit at 27 V, and ESD capability of ±8 kV per IEC 61000-4-2.
For engineers reviewing the RKZ36BKJ#R1 datasheet, RKZ36BKJ#R1 pinout, RKZ36BKJ#R1 application, or RKZ36BKJ#R1 equivalent, this device serves as a compact, surface-mount overvoltage clamp for I/O ports, sensor interfaces, and microcontroller reset lines where precision low-current regulation and transient immunity are required.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across its terminals under defined current conditions. Its 36 V nominal Zener voltage targets mid-range industrial and automotive signal-level clamping applications, with temperature coefficient behavior typical of higher-voltage Zeners (positive γZ).
The device uses a silicon planar construction with ultra-small flat lead (UFP) packaging (JEITA code PWSF0002ZA-A, SC-79 footprint), enabling high-density PCB layout. It is rated for 150 mW power dissipation on PCB, junction temperature up to 150°C, and storage from −55°C to +150°C - confirming suitability for extended-temperature embedded environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34.0–38.0 V at IZ = 2 mA - defines clamping threshold for overvoltage events in 3.3 V/5 V system I/O protection. |
| Dynamic Resistance (rd) | 90 Ω max at IZ = 2 mA - determines voltage deviation under transient current surges; lower rd improves regulation fidelity. |
| Reverse Current (IR) | 2 μA max at VR = 27 V - ensures minimal leakage during normal operation below clamping threshold. |
| ESD Capability | ±8 kV (IEC 61000-4-2, C = 150 pF, R = 330 Ω) - provides robust electrostatic discharge immunity for exposed connectors and buttons. |
| Power Dissipation (Pd) | 150 mW at Ta = 25°C on PCB - sets maximum continuous power handling before thermal derating applies. |
| Junction Temperature (Tj) | 150°C max - enables reliable operation in sealed enclosures or near heat-generating components. |
Pinout & Package
Package: Ultra Small Flat Lead (UFP), JEITA code PWSF0002ZA-A, SC-79 outline (0.8 mm × 1.2 mm × 0.5 mm), tape-and-reel (embossed taping), mass ≈ 0.0016 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated rail or protected node; reverse-biased terminal where Zener breakdown occurs. |
| 2 | Anode | Ground reference or return path; polarity marking aligns with cathode band on top surface. |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount UFP package | 0.8 mm × 1.2 mm footprint enables placement in tight I/O routing zones without via clearance conflicts. |
| High ESD immunity | ±8 kV contact discharge rating allows direct integration on USB, UART, or GPIO lines without external TVS staging. |
| Stable 36 V clamping | Tight 34.0–38.0 V tolerance at 2 mA supports predictable overvoltage response in 24 V auxiliary rail monitoring. |
| Low leakage performance | ≤2 μA at 27 V ensures negligible standby current draw in battery-backed sensor nodes. |
Applications
| Industrial Sensor Interface | Microcontroller Reset Line Protection |
|---|---|
Use Scenario: Protecting analog output pins of pressure/temperature transmitters connected to PLC analog inputs against induced surges on long cable runs. IC Role / Device Role / Timing Role: Zener clamping element placed between signal line and ground to shunt transient energy before it reaches downstream ADC input. Use Value: Prevents ADC saturation or latch-up by limiting voltage excursion to ≤38 V, preserving measurement integrity during 1 kV EFT bursts. |
Use Scenario: Securing the active-low reset input of an ARM Cortex-M0+ MCU powered from a 3.3 V LDO in a smart meter design. IC Role / Device Role / Timing Role: Standby-mode voltage regulator that holds reset asserted only when supply dips below 34 V - ensuring clean boot after brownout recovery. Use Value: Eliminates need for external supervisor IC by providing deterministic reset release at 36 V ±2 V, reducing BOM count and board area. |
| Automotive Body Control Module I/O | USB-C Port VBUS Monitoring |
Use Scenario: Clamping LIN bus transceiver I/O pins subjected to load-dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Fast-response surge absorber placed at transceiver input to clamp spikes up to 38 V without forward conduction. Use Value: Maintains LIN communication integrity during ISO 7637-2 Pulse 5a events by limiting peak voltage to safe levels for 3.3 V logic interface. |
Use Scenario: Monitoring VBUS presence on USB-C receptacles in portable docking stations where 20 V PD negotiation may occur. IC Role / Device Role / Timing Role: Precision reference diode used in resistive divider feedback network for OVP comparator detecting >34 V fault condition. Use Value: Enables accurate 36 V overvoltage detection with <±2 V error margin, supporting USB PD 3.0 sink safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C36 (ON Semiconductor) | Through-hole DO-35 package; 34.2–37.8 V VZ; 100 Ω rd; 500 mW Pd | Requires PCB real estate and wave-solder process; unsuitable for high-density SMT designs. | Select when legacy through-hole assembly or higher continuous power handling is prioritized over miniaturization. |
| MMSZ5241B (Diodes Inc.) | SOD-123 package; 34.2–37.8 V VZ; 90 Ω rd; 500 mW Pd; ±30 kV ESD | Larger footprint (1.8 mm × 1.4 mm); higher power rating but same clamping precision and ESD robustness. | Choose when board space permits and higher surge energy absorption (per Fig.4 reference data) is needed beyond RKZ36BKJ#R1's 150 mW limit. |
Compared with BZX55-C36 and MMSZ5241B, RKZ36BKJ#R1 offers the smallest form factor (UFP/SC-79) and optimal balance of ESD immunity (±8 kV), tight VZ tolerance, and thermal performance for space-constrained 3.3 V/5 V system protection - making it preferred for modern SMT-based industrial and automotive control modules.
Availability
RKZ36BKJ#R1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reset line protection, and automotive body control module I/O requiring stable component supply with full traceability and lifecycle management.
Supply support for RKZ36BKJ#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 SoC solutions for automotive, industrial, and IoT applications.
RKZ36BKJ#R1 belongs to the RKZ-KJ Series of silicon planar Zener diodes engineered specifically for compact, high-reliability surge absorption and voltage stabilization in surface-mount signal-line protection circuits.
FAQ
What is the Zener voltage tolerance of RKZ36BKJ#R1 at 2 mA test current?
The RKZ36BKJ#R1 has a guaranteed Zener voltage range of 34.0 V to 38.0 V when tested at IZ = 2 mA, corresponding to a ±5.6% tolerance about the nominal 36 V value. This specification is verified per Renesas datasheet REJ03G1588-0100 Rev.1.00 and applies under standard ambient conditions (Ta = 25°C). The RKZ36BKJ#R1 maintains this tolerance across its qualified operating temperature range.
Does RKZ36BKJ#R1 support automated optical inspection (AOI) in SMT assembly?
Yes, RKZ36BKJ#R1 features a laser-marked "36·" cathode identifier on its top surface per Renesas marking specification, enabling reliable AOI detection during reflow soldering verification. Its UFP package (SC-79) has consistent coplanarity and defined terminal geometry, meeting IPC-A-610 Class 2 requirements for automated visual inspection in high-volume manufacturing. The RKZ36BKJ#R1's standardized embossed taping also supports seamless feeder integration.
What is the maximum nonrepetitive surge power rating for RKZ36BKJ#R1?
RKZ36BKJ#R1 is characterized for nonrepetitive surge reverse power (PRSM) up to approximately 1.0 W for 1 ms pulses, based on Renesas' reference curve (Fig.4, REJ03G1588-0100). This rating assumes Ta = 25°C and single-event application. For repetitive surges, thermal accumulation must be evaluated using the device's 150 mW steady-state Pd derating curve (Fig.3). The RKZ36BKJ#R1's surge capability is optimized for ESD and EFT protection, not sustained AC line transients.
Is RKZ36BKJ#R1 RoHS compliant and halogen-free?
Yes, RKZ36BKJ#R1 meets RoHS Directive 2011/65/EU requirements and is halogen-free per Renesas' environmental compliance documentation. The UFP package uses lead-free matte tin plating on copper alloy leads, and all die attach, molding compound, and marking materials conform to JEDEC J-STD-609A Class 1 (halogen-free) and EU REACH SVHC thresholds. This compliance is confirmed in Renesas' product change notices and material declarations applicable to RKZ36BKJ#R1.
How does the temperature coefficient of RKZ36BKJ#R1 affect its clamping voltage stability?
RKZ36BKJ#R1 exhibits a positive temperature coefficient (γZ) typical of Zeners above ~5 V, meaning its clamping voltage increases with junction temperature - approximately +0.05%/°C or +18 mV/°C near 36 V. This behavior is documented in Fig.2 of REJ03G1588-0100. In practice, RKZ36BKJ#R1's clamping remains within 34.0–38.0 V across its full −55°C to +150°C storage range, but designers should account for upward drift in high-ambient applications. The RKZ36BKJ#R1's specified VZ tolerance already includes this variation.
RKZ36BKJ#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:
- -
RKZ36BKJ#R1 FAQ
1.How can I place an order for RKZ36BKJ#R1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ36BKJ#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 RKZ36BKJ#R1 reliable?
The price and inventory of RKZ36BKJ#R1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ36BKJ#R1 is usually 5 days.
3.What payment methods are accepted for RKZ36BKJ#R1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ36BKJ#R1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ36BKJ#R1?
RKZ36BKJ#R1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ36BKJ#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 RKZ36BKJ#R1?
For technical support, including RKZ36BKJ#R1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ36BKJ#R1 requirements.
6.How does Aetrix verify that RKZ36BKJ#R1 is sourced from the original manufacturer or authorized distributors?
All RKZ36BKJ#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 RKZ36BKJ#R1 meets industry standards.
7.What is the process for return or replacement of RKZ36BKJ#R1?
All RKZ36BKJ#R1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ36BKJ#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 RKZ36BKJ#R1 part is unused and in its original packaging.
Return procedure for RKZ36BKJ#R1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ36BKJ#R1 Tags
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