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Nexperia USA Inc. BZT52-C3V6X
- Part No.:
- BZT52-C3V6X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C3V6X.pdf
- Description:
- DIODE ZENER 3.6V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:4,784
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Product details
Overview
BZT52-C3V6X from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, designed for precision voltage regulation at 3.6 V nominal Zener voltage (IZ = 5 mA), with 500 Ω max differential resistance and ≤5 μA reverse current at VR = 1 V, commonly used in low-power reference and overvoltage clamp circuits in consumer power management ICs.
For engineers reviewing the BZT52-C3V6X datasheet, BZT52-C3V6X pinout, BZT52-C3V6X application, or BZT52-C3V6X equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (Rth(j-a) = 350 K/W), cathode-anode polarity marking, and SOD123 footprint compatibility with IPC-7351B reflow land patterns.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. Its 3.6 V nominal Zener voltage is specified at 5 mA test current, with temperature coefficient of −3.5 to 0.0 mV/K and low 500 Ω differential resistance ensuring minimal voltage drift with current variation.
The device uses planar epitaxial construction for consistent breakdown characteristics and features a cathode-marked SOD123 package optimized for surface-mount assembly. Thermal performance is defined with FR4 PCB mounting (single-sided copper, tin-plated, 1 cm² cathode pad), yielding Rth(j-sp) = 55 K/W to solder point.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.4 V to 3.8 V at IZ = 5 mA - defines tight regulation window for 3.3 V rail clamping or biasing |
| Differential Resistance (rdif) | ≤500 Ω - ensures <±20 mV output shift per ±10 mA current change in regulation zone |
| Reverse Current (IR) | ≤5 μA at VR = 1 V - guarantees low standby leakage in battery-powered voltage references |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - enables use as low-drop rectifier or ESD protection path in dual-role designs |
| Total Power Dissipation (Ptot) | 590 mW at Tamb ≤ 25 °C - supports continuous operation up to ~165 mW at 70 °C ambient with derating |
| Junction Temperature (Tj) | −55 °C to +150 °C - allows deployment in industrial ambient environments without active cooling |
| Package | SOD123 - 2.8 mm × 1.7 mm footprint with 0.7 mm lead pitch, compatible with standard pick-and-place and reflow profiles |
Pinout & Package
SOD123 plastic surface-mounted package with flat leads; cathode identified by molded band on body; 2-terminal configuration optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar aligns with this terminal for polarity verification during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction enabling Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective selection for non-critical 3.3 V rail stabilization without trimming circuitry |
| Low 500 Ω differential resistance | Maintains regulation accuracy within ±15 mV over 2–10 mA operating range in feedback networks |
| 350 K/W junction-to-ambient thermal resistance | Permits natural convection cooling in compact enclosures without heatsinking for <100 mW loads |
| Cathode-marked SOD123 package | Eliminates orientation errors during automated assembly; supports 0.81 mm pad width per JEDEC footprint |
| 150 °C maximum junction temperature | Supports operation in sealed industrial housings where internal ambient exceeds 85 °C |
Applications
| USB Port Overvoltage Clamp | Microcontroller Reset Circuit Reference |
|---|---|
Use Scenario: Protects 3.3 V USB data lines from transient surges exceeding 3.6 V during hot-plug events or ESD discharge. IC Role / Device Role / Timing Role: Zener clamps reverse voltage to limit stress on transceiver I/O pins; operates in breakdown mode only during fault conditions. Use Value: Prevents latch-up or oxide damage in USB PHYs by holding line voltage ≤3.8 V for >100 ns pulses with <5 μA leakage during normal operation. |
Use Scenario: Provides stable 3.6 V threshold for reset supervisor ICs monitoring 3.3 V system rails in embedded controllers. IC Role / Device Role / Timing Role: Functions as precision voltage reference for comparator input; biased at 5 mA to minimize rdif-induced hysteresis. Use Value: Delivers ±20 mV trip-point stability over −40 °C to +85 °C due to low SZ and tight VZ tolerance. |
| Low-Power Sensor Bias Supply | LED Current Sink Regulation |
Use Scenario: Generates clean 3.6 V bias for analog front-end op-amps in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Acts as shunt regulator in parallel with LDO output to suppress ripple and improve PSRR at sensor signal chain input. Use Value: Reduces 100 kHz switching noise by >25 dB compared to LDO-only solution, leveraging low Cd (450 pF) and stable VZ. |
Use Scenario: Sets constant current for indicator LEDs in industrial HMI panels using resistor-Zener sink topology. IC Role / Device Role / Timing Role: Maintains fixed voltage drop across series current-setting resistor; anode tied to LED cathode, cathode to supply. Use Value: Enables ±3% LED brightness consistency across 2.7–5.5 V input range with <1% current drift over temperature. |
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 MMBZ5226BS | Same 3.6 V nominal VZ but ±5 % tolerance; higher 600 Ω rdif; SOD-123 package | Marginally higher regulation error under load; identical thermal profile and footprint | Select when sourcing from ON Semi's qualified automotive-grade line (−Q suffix variants available) |
| Vishay BZX79-C3V6 | Through-hole DO-35 package; same 3.4–3.8 V VZ range but 1000 Ω rdif; 500 mW Ptot | Not suitable for SMT production; requires wave soldering; higher thermal resistance (500 K/W) | Choose only for legacy through-hole designs or prototyping where manual assembly is acceptable |
Compared with BZT52-C3V6X, MMBZ5226BS offers equivalent SMT compatibility but slightly degraded regulation precision, while BZX79-C3V6 sacrifices modern manufacturability for legacy serviceability-neither matches the 500 Ω rdif and 350 K/W Rth(j-a) of the Nexperia part in high-density applications.
Availability
BZT52-C3V6X is available at Aetrix Electronics and suitable for USB protection circuits, microcontroller reset supervision, low-power sensor biasing, and LED current regulation requiring stable component supply with full traceability and no minimum order quantity.
Supply support for BZT52-C3V6X 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 high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.
The BZT52 series targets cost-sensitive, space-constrained applications requiring robust Zener regulation-designed specifically for consumer, industrial, and computing power management subsystems where SOD123 footprint and ±5 % tolerance deliver optimal balance of performance and manufacturability.
FAQ
What is the maximum continuous reverse current the BZT52-C3V6X can sustain without degradation?
The device is rated for 250 mA forward current but not rated for continuous reverse current; sustained Zener conduction must remain within Ptot = 590 mW at Tamb ≤ 25 °C, limiting practical continuous IZ to ~164 mA at 3.6 V. Derating to 100 mA is recommended for reliability above 50 °C ambient.
Does the BZT52-C3V6X meet automotive AEC-Q200 requirements?
No-this part belongs to the non-automotive qualified C-selection series. Nexperia explicitly states in the revision history that C-suffix parts are not automotive-qualified; AEC-Q200-compliant alternatives require the −Q suffix (e.g., BZT52-C3V6X-Q) and are documented separately.
How does the cathode marking align with the SOD123 physical outline?
The molded band on the BZT52-C3V6X body corresponds precisely to Pin 1 (cathode) in the official SOD123 outline (Fig. 11); the band is centered over the cathode lead, and the anode lead extends from the opposite end-verified against Nexperia's dimensional drawing with 0.10 mm tolerance on band position.
Can BZT52-C3V6X be used in place of BZT52-B3V6 in existing designs?
Yes-both share identical SOD123 package, pinout, and 3.4–3.8 V VZ range, but BZT52-B3V6 has tighter ±2 % tolerance (3.53–3.67 V) versus ±5 % for the C-version (3.4–3.8 V). Substitution is acceptable where 300 mV extra tolerance margin is permissible and rdif ≤500 Ω remains sufficient.
BZT52-C3V6X 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):
- 3.6 V
- Tolerance:
- ±5.6%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 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-C3V6X FAQ
1.How can I place an order for BZT52-C3V6X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C3V6X 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-C3V6X reliable?
The price and inventory of BZT52-C3V6X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C3V6X is usually 5 days.
3.What payment methods are accepted for BZT52-C3V6X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C3V6X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C3V6X?
BZT52-C3V6X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C3V6X 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-C3V6X?
For technical support, including BZT52-C3V6X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C3V6X requirements.
6.How does Aetrix verify that BZT52-C3V6X is sourced from the original manufacturer or authorized distributors?
All BZT52-C3V6X 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-C3V6X meets industry standards.
7.What is the process for return or replacement of BZT52-C3V6X?
All BZT52-C3V6X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C3V6X, 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-C3V6X part is unused and in its original packaging.
Return procedure for BZT52-C3V6X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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