My Inquiry
My Account
Renesas RKZ33BKG#P1
- Part No.:
- RKZ33BKG#P1
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
RKZ33BKG#P1.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:267,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RKZ33BKG#P1 from Renesas Electronics is a silicon planar Zener diode designed for surge absorption and voltage stabilization in low-power signal and interface protection circuits. It delivers a nominal Zener voltage of 33 V (min 31.0 V, max 35.0 V), 2 mA test current, 25 Ω dynamic resistance, 2 μA reverse leakage at 25 V, and 8 kV ESD capability per IEC 61000-4-2 (±). It is used in compact DC power rail clamping and I/O port protection on microcontroller-based sensor nodes.
For engineers reviewing the RKZ33BKG#P1 datasheet, RKZ33BKG#P1 pinout, RKZ33BKG#P1 application, or RKZ33BKG#P1 equivalent, key selection criteria include its 33 V Zener tolerance, ultra-small URP package footprint, 200 mW power rating at 25°C, thermal derating behavior above 75°C, and halogen-free, Pb-free compliance for industrial-grade surface-mount designs.
Technical Context
This device operates as a two-terminal, cathode-anode configured voltage reference and transient suppressor. Its Zener breakdown mechanism provides stable reverse conduction onset at 33 V with ±3.0% tolerance, low dynamic impedance (25 Ω at 5 mA), and negative temperature coefficient below 5 V but positive above ~6 V - confirmed for RKZ33BKG#P1 via Fig.2 in REJ03G1512-0300.
The RKZ33BKG#P1 uses a silicon planar junction structure with epoxy-molded URP (Ultra small Resin Package) housing. It supports non-repetitive surge reverse power up to ~1.2 W for 10 ms (Fig.4 reference curve), and is rated for junction temperatures up to 150°C with storage range from –55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 31.0 V to 35.0 V at IZ = 2 mA - defines clamping threshold for overvoltage events on 24–36 V rails. |
| Dynamic Resistance (rd) | 25 Ω max at IZ = 5 mA - ensures minimal voltage shift under varying load or transient current. |
| Reverse Leakage (IR) | 2 μA max at VR = 25 V - guarantees low standby power loss in always-on protection circuits. |
| Power Dissipation (Pd) | 200 mW at Ta = 25°C, derated linearly to 0 mW at 150°C - limits continuous dissipation on standard FR-4 PCBs. |
| ESD Capability | 8 kV contact discharge (IEC 61000-4-2) - meets Level 4 immunity for industrial I/O interfaces. |
| Package | URP (SC-76A), 1.70 mm × 0.90 mm × 0.45 mm - enables high-density placement in space-constrained IoT edge nodes. |
| Junction Temperature (Tj) | 150°C maximum - allows operation in sealed enclosures with ambient up to 105°C when properly mounted. |
Pinout & Package
URP (Ultra small Resin Package) is a surface-mount, two-terminal plastic package conforming to JEITA code PTSP0002ZA-A and SC-76A outline. Dimensions: 1.70 mm (L) × 0.90 mm (W) × 0.45 mm (H); mass ≈ 0.004 g. Cathode marked with band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to protected node or higher-potential rail; conducts when reverse-biased beyond VZ. |
| 2 | Anode | Typically tied to ground or lower-potential reference; completes current path during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & Pb-free construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 1 moisture sensitivity. |
| Ultra-small URP package | Enables ≥0.5 mm pitch routing and >10,000 units/in² board density in wearable and sensor modules. |
| Taped packaging (3,000 pcs/reel) | Supports automated SMT placement without manual handling or static exposure risks. |
| Stable Zener voltage tolerance | ±3.0% (31.0–35.0 V) ensures predictable clamping across production lots and temperature ranges. |
| High ESD robustness | 8 kV contact discharge rating reduces need for external TVS stages in cost-sensitive industrial controls. |
Applications
| Industrial Sensor Interface Protection | Low-Power MCU I/O Clamping |
|---|---|
|
Use Scenario: Protecting 4–20 mA current loop transmitters against induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Two-terminal shunt clamp placed between signal line and local ground to limit voltage excursion to ≤35 V. Use Value: Prevents damage to op-amp input stages and ADC front-ends while maintaining <2 μA leakage at 24 V nominal. |
Use Scenario: Safeguarding GPIO pins of ARM Cortex-M0+ microcontrollers in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Standby-mode Zener clamp on UART TX/RX lines exposed to ESD during field servicing. Use Value: Delivers 8 kV ESD immunity without adding series resistance or degrading signal rise time (<1 ns added delay). |
| DC Power Rail Stabilization | Reference Voltage Source |
|
Use Scenario: Providing coarse 33 V regulation for auxiliary bias supplies in isolated RS-485 transceivers. IC Role / Device Role / Timing Role: Shunt regulator operating at 2–5 mA to maintain stable voltage under light-load conditions. Use Value: Achieves ±1.5% output stability over –40°C to +85°C due to predictable positive tempco above 6 V. |
Use Scenario: Generating a fixed 33 V reference for analog comparators in overvoltage detection circuits. IC Role / Device Role / Timing Role: Precision voltage reference node with 25 Ω dynamic impedance enabling fast comparator response. Use Value: Enables <100 ns trip delay in 33 V fault detection with <0.5 V hysteresis margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C33 (ON Semiconductor) | Same 33 V nominal, but DO-35 glass package (3.5 mm × 1.8 mm); 500 mW Pd; ±5% tolerance; no specified ESD rating. | Requires larger PCB area; suited for through-hole prototyping or high-power dissipation needs (>200 mW). | Select BZX55-C33 only if board space permits larger package and ESD rating is not required. |
| MMSZ5260B (Diodes Inc.) | SOD-123 package (3.7 mm × 1.6 mm); 500 mW Pd; 33 V ±5%; 100 Ω rd; 30 kV ESD (HBM), but no IEC 61000-4-2 data. | Larger footprint than URP; higher dynamic resistance reduces clamping precision; HBM ESD ≠ system-level IEC rating. | Choose MMSZ5260B only when higher power handling is critical and IEC 61000-4-2 compliance is not mandated. |
Compared with BZX55-C33 and MMSZ5260B, RKZ33BKG#P1 offers superior board-area efficiency (URP vs. DO-35/SOD-123), tighter voltage tolerance (±3.0% vs. ±5%), verified 8 kV IEC 61000-4-2 compliance, and guaranteed 25 Ω dynamic resistance - making it optimal for miniaturized, standards-compliant industrial edge devices.
Availability
RKZ33BKG#P1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, low-power MCU I/O protection, and DC power rail stabilization requiring stable component supply, RoHS-compliant sourcing, and high-volume tape-and-reel delivery.
Supply support for RKZ33BKG#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 connectivity solutions for automotive, industrial, and IoT applications.
The RKZ-KG Series was developed specifically for compact, high-reliability surge suppression and voltage stabilization in space-constrained industrial and consumer electronics - emphasizing halogen-free materials, tight Zener tolerances, and verified ESD robustness.
FAQ
What is the Zener voltage tolerance of RKZ33BKG#P1?
The RKZ33BKG#P1 has a Zener voltage range of 31.0 V to 35.0 V at IZ = 2 mA, corresponding to a ±3.0% tolerance about the nominal 33 V rating. This is confirmed in the Electrical Characteristics table on page 2 of REJ03G1512-0300. The RKZ33BKG#P1 maintains this tolerance across its qualified operating temperature range and is tighter than industry-standard ±5% Zeners like the BZX55-C33.
Does RKZ33BKG#P1 meet IEC 61000-4-2 ESD requirements?
Yes, RKZ33BKG#P1 is rated for 8 kV contact discharge per IEC 61000-4-2 (both forward and reverse direction, 10 pulses), as documented in the "ESD-Capability" column on page 2 of REJ03G1512-0300. This makes RKZ33BKG#P1 suitable for protecting I/O lines in industrial equipment where Level 4 immunity is required, unlike many generic Zeners that only specify HBM ESD ratings.
What is the package type and dimensions of RKZ33BKG#P1?
RKZ33BKG#P1 uses the URP (Ultra small Resin Package), also known as SC-76A, with JEITA code PTSP0002ZA-A. Its dimensions are 1.70 mm (length) × 0.90 mm (width) × 0.45 mm (height), and it weighs approximately 0.004 g. The cathode is marked with a band on the top surface, and pin 1 is cathode, pin 2 is anode - as shown in the Pin Arrangement diagram on page 1 of REJ03G1512-0300.
Can RKZ33BKG#P1 be used for continuous voltage regulation?
RKZ33BKG#P1 is rated for 200 mW power dissipation at 25°C ambient, derating linearly to zero at 150°C junction temperature. It can serve as a shunt regulator in low-current applications (e.g., ≤5 mA), but is optimized for transient suppression and reference use rather than high-current regulation. For sustained regulation above 2 mA, thermal design and PCB copper area must be validated using Fig.3 (Power Dissipation vs. Ambient Temperature) in REJ03G1512-0300.
Is RKZ33BKG#P1 halogen-free and RoHS compliant?
Yes, RKZ33BKG#P1 belongs to the RKZ-KG P6 Series, explicitly designated as halogen-free and Pb-free per the Ordering Information table on page 1 of REJ03G1512-0300. It complies with the EU RoHS Directive 2011/65/EU and meets JEDEC J-STD-609A Class 1 moisture sensitivity, making it suitable for lead-free reflow assembly and environmentally regulated industrial products.
RKZ33BKG#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:
- -
RKZ33BKG#P1 FAQ
1.How can I place an order for RKZ33BKG#P1 through Aetrix?
Please submit a Request for Quotation (RFQ) for RKZ33BKG#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 RKZ33BKG#P1 reliable?
The price and inventory of RKZ33BKG#P1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RKZ33BKG#P1 is usually 5 days.
3.What payment methods are accepted for RKZ33BKG#P1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RKZ33BKG#P1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RKZ33BKG#P1?
RKZ33BKG#P1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RKZ33BKG#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 RKZ33BKG#P1?
For technical support, including RKZ33BKG#P1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RKZ33BKG#P1 requirements.
6.How does Aetrix verify that RKZ33BKG#P1 is sourced from the original manufacturer or authorized distributors?
All RKZ33BKG#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 RKZ33BKG#P1 meets industry standards.
7.What is the process for return or replacement of RKZ33BKG#P1?
All RKZ33BKG#P1 units undergo pre-shipment inspection (PSI). If there is an issue with RKZ33BKG#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 RKZ33BKG#P1 part is unused and in its original packaging.
Return procedure for RKZ33BKG#P1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RKZ33BKG#P1 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
