My Inquiry
My Account
Nexperia USA Inc. BZT52-C33J
- Part No.:
- BZT52-C33J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C33J.pdf
- Description:
- DIODE ZENER 33V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:9,467
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT52-C33J from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 33 V nominal Zener voltage at 2 mA test current, 45 Ω maximum differential resistance, and 590 mW total power dissipation at Tamb ≤ 25 °C; used for precision voltage reference and overvoltage protection in low-power analog supply rails.
For engineers reviewing the BZT52-C33J datasheet, BZT52-C33J pinout, BZT52-C33J application, or BZT52-C33J equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (Rth(j-a) = 350 K/W), reverse leakage at VR = 26.4 V (≤ 0.1 μA), and SOD123 footprint compatibility with IPC-7351B reflow land patterns.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across load variations by conducting reverse current above its specified Zener breakdown threshold. Its temperature coefficient of +11.2 mV/K at IZ = 5 mA enables predictable drift compensation in bias networks.
The SOD123 package provides surface-mount reliability with defined thermal path to PCB copper (Rth(j-sp) = 55 K/W to cathode solder point), and the cathode-marked polarity ensures correct orientation in series/parallel regulation topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 33 V nominal at IZ = 2 mA; defines regulated reference point for feedback loops or clamp thresholds |
| Tolerance | ±5 %; allows design margining for worst-case supply rail stability under temperature and aging |
| Differential Resistance rdif | ≤ 45 Ω; determines output impedance and load regulation error (ΔVZ ≈ rdif × ΔIZ) |
| Power Dissipation Ptot | 590 mW at Tamb ≤ 25 °C; sets maximum continuous reverse power before thermal runaway |
| Reverse Current IR | ≤ 0.1 μA at VR = 26.4 V; ensures minimal quiescent current in high-impedance reference nodes |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA; defines conduction loss when used in series forward-biased configurations |
| Junction Temperature Tj | 150 °C max; constrains PCB layout copper area and ambient operating envelope |
Pinout & Package
SOD123 plastic surface-mounted package: 2-lead, flat lead, cathode marked by bar; dimensions 3.75 mm × 1.7 mm × 1.3 mm (L × W × H), 1 cm² cathode pad required for full 590 mW rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated node; marking bar identifies this terminal; primary heat path to PCB |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | 45 Ω max ensures <15 mV output shift per 0.3 mA load change - critical for sensor bias stability |
| Controlled temperature coefficient | +11.2 mV/K at IZ = 5 mA enables predictable drift modeling in temperature-critical references |
| High surge robustness | Non-repetitive peak reverse current IZSM = 0.9 A (tp = 100 μs) supports transient overvoltage clamping |
| Standardized SOD123 footprint | Compatible with IPC-7351B JEDEC MO-202AA outline - enables drop-in replacement and automated assembly |
| Low leakage performance | IR ≤ 0.1 μA at 80 % of VZ minimizes error in high-impedance divider networks |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure transducers in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt Zener reference providing 33 V bias to Wheatstone bridge, compensating for supply ripple and line variation. Use Value: 45 Ω rdif limits bridge voltage shift to <10 mV over 0–200 μA sensor current range, preserving 12-bit ADC accuracy. |
Use Scenario: Clamping induced surges on USB VBUS line during hot-plug events in embedded host controllers. IC Role / Device Role / Timing Role: Reverse-biased transient voltage suppressor limiting VBUS to 33 V during ESD or inductive kick events. Use Value: 0.9 A non-repetitive IZSM handles 100 μs surges without degradation, meeting IEC 61000-4-2 Level 4 immunity. |
| Programmable Logic Controller (PLC) Power Monitoring | Automotive Body Control Module (BCM) Reference |
Use Scenario: Generating a stable 33 V reference for ADC measurement of 24 V DC system voltage in industrial control cabinets. IC Role / Device Role / Timing Role: Precision Zener element in resistive divider feeding 12-bit SAR ADC input stage. Use Value: ±5 % VZ tolerance and <0.1 μA IR ensure <0.5 % full-scale error across –40 °C to +85 °C operating range. |
Use Scenario: Providing regulated bias to LIN transceiver oscillator circuit in non-safety-critical BCM submodules. IC Role / Device Role / Timing Role: Voltage reference stabilizing RC timing network for LIN baud rate generation. Use Value: +11.2 mV/K SZ enables software-based temperature compensation, reducing baud error to <1.5 % over –40 °C to +125 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5262BS | 33 V, ±5 %, SOD-123, but higher rdif (70 Ω) and lower Ptot (350 mW) | Less suitable for high-current reference loads or sustained 590 mW dissipation | Select when board space is constrained and thermal budget is limited to 350 mW |
| Vishay BZX84-C33 | 33 V, ±5 %, SOT-23 package; smaller footprint but Rth(j-a) = 450 K/W and Ptot = 350 mW | Not interchangeable without PCB redesign; lower power handling restricts use in >100 mW applications | Choose only if SOT-23 is mandated and thermal derating to 200 mW is acceptable |
Compared with MMBZ5262BS and BZX84-C33, BZT52-C33J delivers superior thermal performance (350 K/W vs. ≥450 K/W) and 68 % higher power rating, enabling direct integration into 24 V system monitoring circuits without external heatsinking.
Availability
BZT52-C33J is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and PLC power monitoring requiring stable component supply and long-term obsolescence management.
Supply support for BZT52-C33J 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET devices for automotive, industrial, and consumer markets.
The BZT52 series belongs to Nexperia's general-purpose Zener diode product line, engineered for reliable voltage regulation and overvoltage protection in cost-sensitive, high-volume surface-mount applications.
FAQ
What is the Zener test current for BZT52-C33J?
The nominal Zener voltage of 33 V is specified at IZ = 2 mA, per Table 9 in the datasheet. This test condition ensures consistent characterization of VZ and differential resistance across production lots and enables accurate comparison with other 33 V Zeners in the same series.
Can BZT52-C33J be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, causing current hogging and thermal instability when paralleled. For >590 mW requirements, use a single higher-rated device or active regulation instead of parallel BZT52-C33J units.
Is BZT52-C33J automotive qualified?
No - per Section 13 of the datasheet revision history, C-series devices are explicitly non-automotive qualified. For automotive applications, Nexperia offers the -Q qualified variants (e.g., BZT52-C33-Q), which undergo AEC-Q101 stress testing and have different qualification documentation.
How does the SOD123 package affect thermal performance?
The SOD123 package achieves Rth(j-a) = 350 K/W in free air but drops to 210 K/W with optimized PCB copper (1 cm² cathode pad), directly enabling the full 590 mW rating. Without the specified pad, power must be derated to ≤350 mW to avoid exceeding Tj = 150 °C.
BZT52-C33J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±6.1%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C33J FAQ
1.How can I place an order for BZT52-C33J through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C33J 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 BZT52-C33J reliable?
The price and inventory of BZT52-C33J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C33J is usually 5 days.
3.What payment methods are accepted for BZT52-C33J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C33J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C33J?
BZT52-C33J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C33J 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 BZT52-C33J?
For technical support, including BZT52-C33J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C33J requirements.
6.How does Aetrix verify that BZT52-C33J is sourced from the original manufacturer or authorized distributors?
All BZT52-C33J 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 BZT52-C33J meets industry standards.
7.What is the process for return or replacement of BZT52-C33J?
All BZT52-C33J units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C33J, 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 BZT52-C33J part is unused and in its original packaging.
Return procedure for BZT52-C33J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52-C33J 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
