My Inquiry
My Account
Nexperia USA Inc. BZT52-C16X
- Part No.:
- BZT52-C16X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C16X.pdf
- Description:
- DIODE ZENER 16.2V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,923
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT52-C16X from Nexperia is a Zener voltage regulator diode in SOD123 surface-mount package, designed for precision low-power voltage reference and clamping in biasing, protection, and regulation circuits. It delivers a nominal 16 V Zener voltage at 5 mA test current, ±5 % tolerance, 170 Ω maximum differential resistance, and supports up to 590 mW total power dissipation at 25 °C ambient.
For engineers reviewing the BZT52-C16X datasheet, BZT52-C16X pinout, BZT52-C16X application, or BZT52-C16X equivalent, key selection criteria include Zener voltage accuracy at IZ = 5 mA, thermal resistance (Rth(j-a) = 350 K/W), reverse leakage at VR = 12.8 V (≤0.05 μA), and SOD123 footprint compatibility with automated PCB assembly.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage by conducting reverse current when applied voltage exceeds its 16 V Zener threshold. Its temperature coefficient of +11.2 mV/K at IZ = 5 mA enables predictable drift compensation in mid-voltage reference designs.
The SOD123 package provides low-profile mounting with defined thermal path to PCB copper-Rth(j-sp) = 210 K/W to solder point and Rth(j-a) = 350 K/W in free air-enabling reliable operation up to 150 °C junction temperature under controlled power derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 15.3 V to 17.1 V at IZ = 5 mA - defines regulation band for stable reference generation |
| Differential Resistance rdif | 170 Ω max - determines output impedance and load regulation sensitivity |
| Reverse Current IR | ≤0.05 μA at VR = 12.8 V - ensures minimal quiescent leakage in high-impedance bias networks |
| Power Dissipation Ptot | 590 mW at Tamb ≤ 25 °C - sets maximum continuous DC power before thermal derating applies |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - limits conduction loss during forward-biased transient clamping |
| Junction Temperature Tj | 150 °C max - constrains operating envelope in thermally constrained PCB layouts |
Pinout & Package
SOD123 plastic surface-mount package: 2-pin, flat lead, cathode-marked with bar; dimensions 3.75 mm × 1.7 mm × 1.3 mm (L × W × H); optimized for reflow soldering on FR4 PCBs with standard 2.36 mm × 1.11 mm pad layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct orientation during placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective voltage referencing without trimming in non-critical analog supply rails |
| Low differential resistance (170 Ω max) | Minimizes output voltage shift under varying load current in feedback or reference divider networks |
| 150 °C maximum junction temperature | Supports operation in industrial environments with limited airflow or elevated ambient temperatures |
| SOD123 footprint compatibility | Ensures drop-in replacement capability across Nexperia's BZT52 series and broadens board-level reuse options |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 16 V reference for op-amp biasing or ADC voltage scaling in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Shunt voltage reference element establishing precise DC potential independent of input ripple or load variation. Use Value: Delivers <1 % regulation error over 1–10 mA Zener current range due to low rdif and tight VZ tolerance. |
Use Scenario: Protecting microcontroller GPIO pins from 24 V field-side transients in factory automation I/O modules. IC Role / Device Role / Timing Role: Reverse-biased clamping diode limiting voltage excursion to 17.1 V peak during surge events. Use Value: Absorbs up to 40 W non-repetitive peak power (100 μs pulse) without failure, per IEC 60134 limiting values. |
| Current Source Biasing | Temperature-Compensated Reference |
Use Scenario: Generating constant current for LED driver bias or transistor base current in linear regulators. IC Role / Device Role / Timing Role: Fixed-voltage node enabling resistor-defined current through series load. Use Value: Maintains stable current setpoint with <±0.5 % drift over 0–70 °C ambient due to predictable +11.2 mV/K TC. |
Use Scenario: Serving as primary reference in analog front-end circuits requiring drift-aware calibration. IC Role / Device Role / Timing Role: Voltage reference with known positive temperature coefficient used in conjunction with NTC or complementary diodes. Use Value: Enables first-order temperature compensation when paired with negative-TC components in precision measurement systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-B16 | ±2 % tolerance, 110 Ω max rdif, tighter VZ spread (15.7–16.3 V) | Higher precision required in feedback loops where <0.5 % regulation error is mandatory | Select when improved voltage accuracy and lower dynamic impedance justify higher unit cost |
| MMBZ5245B | Same 16 V nominal, SOT-23 package, 150 mW Ptot, higher rdif (250 Ω) | Space-constrained designs where 1.3 mm × 2.9 mm SOT-23 footprint is preferred over SOD123 | Choose only if board area savings outweigh reduced power handling and higher impedance |
Compared with BZT52-C16X, BZT52-B16 offers tighter regulation but lower surge robustness, while MMBZ5245B trades power capability and impedance for smaller size-making BZT52-C16X optimal for cost-sensitive, medium-power SMD regulation where SOD123 footprint is acceptable.
Availability
BZT52-C16X is available at Aetrix Electronics and suitable for industrial power supply referencing, automotive body control module clamping, and IoT sensor node biasing requiring stable component supply across multi-year production cycles.
Supply support for BZT52-C16X 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, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The BZT52 series targets general-purpose voltage regulation and protection in cost-sensitive, space-constrained SMD applications-designed for manufacturability, thermal stability, and wide-voltage-range coverage from 2.4 V to 75 V.
FAQ
What is the Zener test current for BZT52-C16X?
The specified Zener voltage of 15.3–17.1 V is measured at IZ = 5 mA, per Table 8 in the datasheet. This current level balances measurement repeatability with self-heating effects, and is the standard condition used for binning and specification compliance verification.
Can BZT52-C16X be used in automotive applications?
No-BZT52-C16X is explicitly designated as non-automotive qualified per Nexperia's revision history (v.2, October 2025). Automotive use requires the -Q qualified variant (e.g., BZT52-C16X-Q), which undergoes AEC-Q200 stress testing and has different qualification documentation.
How does thermal resistance affect BZT52-C16X's power rating?
With Rth(j-a) = 350 K/W, a 590 mW dissipation raises junction temperature by 206.5 °C above ambient-exceeding the 150 °C limit. Therefore, full-rated power is only valid at Tamb ≤ 25 °C; derating begins linearly above that point, reaching zero power at ~107 °C ambient.
What is the significance of the 'C' in BZT52-C16X?
The 'C' denotes the ±5 % Zener voltage tolerance grade within the BZT52 family. It distinguishes this part from the tighter ±2 % 'B' grade (e.g., BZT52-B16) and reflects the broader VZ distribution band (15.3–17.1 V vs. 15.7–16.3 V), enabling lower-cost sourcing for less critical regulation tasks.
BZT52-C16X 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):
- 16.2 V
- Tolerance:
- ±5.6%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 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-C16X FAQ
1.How can I place an order for BZT52-C16X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C16X 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-C16X reliable?
The price and inventory of BZT52-C16X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C16X is usually 5 days.
3.What payment methods are accepted for BZT52-C16X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C16X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C16X?
BZT52-C16X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C16X 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-C16X?
For technical support, including BZT52-C16X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C16X requirements.
6.How does Aetrix verify that BZT52-C16X is sourced from the original manufacturer or authorized distributors?
All BZT52-C16X 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-C16X meets industry standards.
7.What is the process for return or replacement of BZT52-C16X?
All BZT52-C16X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C16X, 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-C16X part is unused and in its original packaging.
Return procedure for BZT52-C16X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52-C16X 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…
