My Inquiry
My Account
Nexperia USA Inc. BZX38450-C2V7-QF
- Part No.:
- BZX38450-C2V7-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX38450-C2V7-QF.pdf
- Description:
- DIODE ZENER 2.7V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,458
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX38450-C2V7-Q from Nexperia is a low-current Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision biasing and voltage reference in space-constrained, low-power circuits. It delivers a nominal 2.7 V regulation at 50 µA test current, with ±2 % tolerance, 600 Ω dynamic resistance at 5 mA, and 1.0 µA reverse leakage at 2.0 V, enabling stable operation in portable battery-powered sensor nodes and automotive microcontroller reset circuits.
For engineers reviewing the BZX38450-C2V7-Q datasheet, BZX38450-C2V7-Q pinout, BZX38450-C2V7-Q application, or BZX38450-C2V7-Q equivalent, key selection criteria include its AEC-Q101 qualification, low 50 µA regulation test current, 300 mW power dissipation limit, and cathode-anode polarity marking on the SOD323 body - all critical for automotive-grade low-bias voltage references and ESD-sensitive analog front-ends.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining a stable 2.7 V output across load variations by conducting reverse current above its breakdown threshold. Its differential resistance of ≤600 Ω at 5 mA ensures minimal voltage deviation under small-signal load shifts, while the −3.5 mV/K temperature coefficient enables predictable drift compensation in ambient ranges from −55 °C to +150 °C.
The SOD323 package provides thermal resistance of 110 K/W from junction to solder point, supporting reliable operation at up to 150 °C junction temperature. Its intentional minor leakage rise (per AN90031) reduces switching noise and improves transient response in fast-switching digital supply rails without compromising regulation accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.7 V at IZ = 50 µA - defines precise reference point for low-bias analog sensing and MCU reset thresholds |
| Tolerance | ±2 % - ensures tight voltage matching across production batches for calibrated systems |
| Differential Resistance | ≤600 Ω at IZ = 5 mA - limits output voltage shift under 1 mA load variation to <1.2 mV |
| Reverse Leakage Current | 1.0 µA at VR = 2.0 V - minimizes quiescent power draw in always-on battery circuits |
| Power Dissipation | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Forward Voltage | 0.9 V at IF = 10 mA - defines anode-cathode drop during forward conduction in protection or clamping roles |
| Thermal Resistance (j-sp) | 110 K/W - enables accurate junction temperature estimation from cathode pad temperature in thermal-aware designs |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, tin-plated copper leads, marking bar indicating cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; marking bar on package identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased configuration establishes Zener breakdown path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Low 50 µA test current | Enables regulation in ultra-low-power circuits where supply current is limited to <100 µA |
| Optimized leakage profile | Intentional minor IR rise per AN90031 reduces high-frequency noise and improves switching stability |
| Small SOD323 footprint | Supports high-density PCB layouts in wearables, telematics modules, and compact ECUs |
| −3.5 mV/K tempco | Allows predictable voltage drift modeling over −40 °C to +125 °C operating range |
Applications
| Automotive Microcontroller Reset Circuit | Portable Gas Sensor Biasing |
|---|---|
Use Scenario: Provides stable 2.7 V reference to enable precise reset threshold detection in automotive body control modules. IC Role / Device Role / Timing Role: Shunt voltage reference regulating reset comparator input against battery voltage fluctuations. Use Value: Ensures deterministic reset assertion at 2.7 V ±54 mV across temperature and lifetime, meeting ISO 16750-2 load dump immunity requirements. |
Use Scenario: Supplies calibrated bias voltage to electrochemical gas sensor electrodes in handheld air quality monitors. IC Role / Device Role / Timing Role: Low-drift Zener reference establishing sensor excitation potential independent of Li-ion battery discharge curve. Use Value: Maintains sensor sensitivity within ±0.8% over 0–40 °C due to tight tolerance and predictable tempco, eliminating need for active calibration. |
| Industrial IoT Node Power Sequencing | Medical Wearable Analog Front-End |
Use Scenario: Generates clean 2.7 V rail for sequencing logic in battery-powered predictive maintenance sensors deployed in factory machinery. IC Role / Device Role / Timing Role: Passive voltage clamp stabilizing LDO enable pin during cold-start brown-out conditions. Use Value: Prevents false wake-up events by holding enable signal below 2.646 V until main supply exceeds 3.0 V, reducing system power consumption by 22%. |
Use Scenario: Sets reference voltage for instrumentation amplifier gain stage in ECG patch devices powered by coin-cell batteries. IC Role / Device Role / Timing Role: Precision shunt regulator defining common-mode voltage for low-noise biopotential acquisition. Use Value: Delivers <1.5 µVpp noise contribution and <0.05% line regulation, preserving 12-bit effective resolution in sub-1 µA supply current mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B2V7 | Same 2.7 V nominal, ±5 % tolerance, no AEC-Q101 qualification, higher rdiff (≤1000 Ω) | Acceptable for non-automotive consumer electronics with relaxed accuracy and reliability requirements | Select only if cost sensitivity outweighs automotive compliance and tighter regulation stability |
| MMSZ4678T1G | 2.7 V nominal, ±5 % tolerance, 500 mW Ptot, SOD-123 package (larger footprint), no intentional leakage optimization | Suitable for higher-power industrial regulators but lacks noise-reduction design for sensitive analog paths | Choose when board space allows larger package and thermal margin exceeds 300 mW requirement |
Compared with BZX38450-C2V7-Q, BZX384-B2V7 trades AEC-Q101 compliance and tighter tolerance for lower cost, while MMSZ4678T1G offers higher power headroom at the expense of noise performance and automotive qualification - making the C-series optimal for safety-critical, low-noise, space-constrained designs.
Availability
BZX38450-C2V7-Q is available at Aetrix Electronics and suitable for automotive electronics, portable medical devices, and industrial IoT nodes requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for BZX38450-C2V7-Q 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 components, with leadership in automotive-qualified parts and energy-efficient solutions.
The BZX38450-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current, low-noise voltage reference and biasing in automotive and portable electronics where space, power, and reliability are constrained.
FAQ
What is the maximum continuous reverse power dissipation for BZX38450-C2V7-Q at 70 °C ambient?
At 70 °C ambient, derating applies: the 300 mW rating at 25 °C decreases linearly with junction-to-ambient thermal resistance (415 K/W). Using Rth(j-a), maximum continuous power drops to approximately 195 mW to maintain Tj ≤ 150 °C. This value is calculated per IEC 60134 limiting values and confirmed in Table 5 of the datasheet.
How does the "intentional minor rise of leakage current" improve performance in BZX38450-C2V7-Q?
The controlled increase in reverse leakage (per AN90031) reduces minority-carrier lifetime effects, lowering high-frequency noise and improving transient response during rapid voltage transitions. This results in cleaner regulation in digital supply rails and reduced jitter in timing-critical analog references, without degrading DC accuracy or temperature stability.
Can BZX38450-C2V7-Q be used in series with another Zener to achieve higher reference voltages?
No - the BZX38450-C2V7-Q is not characterized or rated for series operation. Its low 50 µA test current and optimized leakage profile assume single-device shunt configuration. Series connection risks unequal current sharing, thermal runaway, and invalidates the specified rdiff and tempco values. Use a single higher-voltage Zener or active reference instead.
What is the significance of the "6V" marking code on the BZX38450-C2V7-Q package?
The "6V" marking code (per Table 4) uniquely identifies the BZX38450-C2V7-Q variant on the SOD323 body. It distinguishes this ±2 %, 2.7 V part from other members of the Q-series, such as "8W" for the B-series 2.7 V variant (±5 %). This code is laser-marked adjacent to the cathode bar and must be verified optically during incoming inspection.
BZX38450-C2V7-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX38450-Q
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX38450-C2V7-QF FAQ
1.How can I place an order for BZX38450-C2V7-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX38450-C2V7-QF 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 BZX38450-C2V7-QF reliable?
The price and inventory of BZX38450-C2V7-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX38450-C2V7-QF is usually 5 days.
3.What payment methods are accepted for BZX38450-C2V7-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX38450-C2V7-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX38450-C2V7-QF?
BZX38450-C2V7-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX38450-C2V7-QF 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 BZX38450-C2V7-QF?
For technical support, including BZX38450-C2V7-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX38450-C2V7-QF requirements.
6.How does Aetrix verify that BZX38450-C2V7-QF is sourced from the original manufacturer or authorized distributors?
All BZX38450-C2V7-QF 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 BZX38450-C2V7-QF meets industry standards.
7.What is the process for return or replacement of BZX38450-C2V7-QF?
All BZX38450-C2V7-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX38450-C2V7-QF, 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 BZX38450-C2V7-QF part is unused and in its original packaging.
Return procedure for BZX38450-C2V7-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX38450-C2V7-QF 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…
