My Inquiry
My Account
Nexperia USA Inc. BZX84-C12/DG/B3,23
- Part No.:
- BZX84-C12/DG/B3,23
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-C12/DG/B3,23.pdf
- Description:
- DIODE ZENER 12.05V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,485
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX84-C12/DG/B3,23 from Nexperia is a 12 V, 250 mW silicon planar Zener diode in SOT23 package, with nominal Zener voltage tolerance ±5%, maximum Zener impedance 30 Ω at 5 mA, and reverse leakage current ≤100 nA at 9.5 V, used for precision voltage reference and overvoltage protection in low-power analog sensor interfaces.
For engineers reviewing the BZX84-C12/DG/B3,23 datasheet, BZX84-C12/DG/B3,23 pinout, BZX84-C12/DG/B3,23 application, or BZX84-C12/DG/B3,23 equivalent, key selection criteria include Zener voltage accuracy, dynamic impedance at operating current, power derating above 25°C, thermal resistance (RthJ-A = 400 K/W), and SOT23 footprint compatibility with automated assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and supply conditions. Its planar construction ensures consistent parametric performance and long-term stability, with guaranteed VZ tested at IZ = 5 mA and temperature-compensated characteristics over -65°C to +150°C.
The device exhibits low noise and minimal voltage drift with current-VZ change is ±0.05%/mA typical-and supports fast transient response due to junction capacitance of 75 pF at 0 V, making it suitable for feedback regulation and reference buffering in compact DC-DC converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12 V ±5% at IZ = 5 mA - defines precise clamping threshold for 12 V rail protection and reference generation |
| Power Dissipation (Ptot) | 250 mW at Tamb = 25°C - limits continuous current to ~20.8 mA without heatsinking |
| Zener Impedance (ZZK) | ≤30 Ω at IZ = 1 mA - ensures minimal output voltage variation under light-load transients |
| Reverse Leakage (IR) | ≤100 nA at VR = 9.5 V - preserves signal integrity in high-impedance bias networks |
| Junction Capacitance (CJ) | 75 pF at VR = 0 V - impacts high-frequency noise coupling in precision analog stages |
| Thermal Resistance (RthJ-A) | 400 K/W - dictates maximum ambient temperature rise before exceeding 150°C junction limit |
Pinout & Package
Package: SOT23 (SC-59), surface-mount, 3-terminal plastic package with standard lead pitch of 0.95 mm and body dimensions 2.9 × 1.3 × 1.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference node | Connected to lower-potential side in Zener configuration; required for correct polarity in shunt regulation |
| Cathode (Pin 2) | Zener breakdown terminal / voltage clamp node | Connected to regulated rail; carries full Zener current during overvoltage events |
| NC / Dummy (Pin 3) | No internal connection | Electrically isolated; must remain unconnected or grounded per layout guidelines to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| ±5% VZ tolerance at 5 mA | Enables direct replacement in 12 V reference designs without recalibration or resistor trimming |
| Low RthJ-A = 400 K/W | Supports operation up to +125°C ambient in sealed enclosures without forced airflow |
| Guaranteed VZ stability over -65°C to +150°C | Validates use in automotive engine control modules and industrial outdoor sensors |
| 75 pF junction capacitance | Minimizes RF interference injection into adjacent analog signal paths on mixed-signal PCBs |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Stabilizing 12 V bias for bridge-based pressure transducers in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Shunt voltage reference and overvoltage limiter protecting op-amp input stages from ESD-induced rail excursions. Use Value: Maintains <±10 mV reference drift over temperature, enabling sub-0.1% measurement accuracy without calibration. | Use Scenario: Clamping VBUS line during hot-plug transients in USB-C PD sink applications with 12 V auxiliary power rails. IC Role / Device Role / Timing Role: Low-energy crowbar element absorbing 10–100 ns spikes exceeding 15 V without latch-up. Use Value: Limits VBUS overshoot to ≤12.6 V, preventing damage to USB-C controller ICs rated for 13.2 V absolute max. |
| Automotive Body Control Module | IoT Node Battery Monitor Reference |
Use Scenario: Providing stable 12 V reference for microcontroller ADC in BCMs monitoring door lock actuators and lighting drivers. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric ADC measurements tied to vehicle battery rail. Use Value: Delivers <0.5% total error (line/load/temp) across 9–16 V battery range, eliminating need for external trim resistors. | Use Scenario: Generating accurate 12 V reference for Li-ion battery pack voltage monitoring in smart thermostats and asset trackers. IC Role / Device Role / Timing Role: Low-quiescent-current voltage reference feeding comparator hysteresis thresholds. Use Value: Draws only 100 nA leakage at 9.5 V, extending 10-year battery life in always-on monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242B-7-F | 12 V ±5%, 350 mW, ZZK ≤35 Ω at 20 mA, RthJ-A = 357 K/W | Higher power rating enables higher surge current handling but larger thermal footprint | Select when >200 mW transient dissipation is required and board space allows SOT23-3 with tighter thermal margin |
| BZX84-C12-TP | 12 V ±5%, 250 mW, ZZK ≤30 Ω at 5 mA, RthJ-A = 400 K/W, same SOT23 footprint | Identical electrical specs but different tape-and-reel packaging and traceability marking | Drop-in replacement for production continuity where Nexperia's DG/B3,23 marking is not required for audit compliance |
Compared with BZX84-C12/DG/B3,23, MMBZ5242B-7-F offers higher surge capability at cost of thermal density, while BZX84-C12-TP provides identical performance with alternate logistics coding-enabling seamless BOM migration without redesign.
Availability
BZX84-C12/DG/B3,23 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery protection, and automotive body control modules requiring stable component supply with full traceability and no obsolescence risk through 2030.
Supply support for BZX84-C12/DG/B3,23 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 BZX84 series belongs to Nexperia's precision Zener diode product line, engineered for stable voltage reference and robust overvoltage protection in space-constrained, thermally demanding applications.
FAQ
What is the maximum continuous Zener current for BZX84-C12/DG/B3,23 at 70°C ambient?
At 70°C ambient, derated power is 187.5 mW (250 mW × [1 − (70−25)/400]), yielding maximum continuous Zener current of 15.6 mA. This assumes no PCB copper pour; adding 25 mm² copper pad improves thermal dissipation by ~25%.
Does BZX84-C12/DG/B3,23 meet AEC-Q200 stress test requirements for automotive use?
No-BZX84-C12/DG/B3,23 is qualified to JEDEC JESD22 standards (e.g., HTOL, TCT) but not AEC-Q200. For automotive-grade Zener diodes, Nexperia recommends the PZUxxL3.1 series, which undergoes full AEC-Q200 qualification including vibration and humidity testing.
Can this Zener diode be used in series to achieve higher clamping voltage?
Yes-two BZX84-C12/DG/B3,23 diodes in series yield ~24 V clamping, but VZ tolerance compounds to ±7.1% (RSS of ±5%), and thermal tracking mismatch may cause uneven voltage division. Use matched monolithic dual-Zener ICs for critical 24 V references.
Is the SOT23 pin 3 (dummy lead) electrically connected internally?
No-pin 3 is a mechanical dummy lead with no internal bond wire or die connection. It serves only for mechanical stability and solder joint reliability; connecting it introduces no electrical effect but violates Nexperia's recommended layout guidelines and may compromise moisture resistance.
BZX84-C12/DG/B3,23 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 12.05 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX84-C12/DG/B3,23 FAQ
1.How can I place an order for BZX84-C12/DG/B3,23 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-C12/DG/B3,23 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 BZX84-C12/DG/B3,23 reliable?
The price and inventory of BZX84-C12/DG/B3,23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-C12/DG/B3,23 is usually 5 days.
3.What payment methods are accepted for BZX84-C12/DG/B3,23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-C12/DG/B3,23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-C12/DG/B3,23?
BZX84-C12/DG/B3,23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-C12/DG/B3,23 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 BZX84-C12/DG/B3,23?
For technical support, including BZX84-C12/DG/B3,23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-C12/DG/B3,23 requirements.
6.How does Aetrix verify that BZX84-C12/DG/B3,23 is sourced from the original manufacturer or authorized distributors?
All BZX84-C12/DG/B3,23 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 BZX84-C12/DG/B3,23 meets industry standards.
7.What is the process for return or replacement of BZX84-C12/DG/B3,23?
All BZX84-C12/DG/B3,23 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-C12/DG/B3,23, 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 BZX84-C12/DG/B3,23 part is unused and in its original packaging.
Return procedure for BZX84-C12/DG/B3,23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-C12/DG/B3,23 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…
