My Inquiry
My Account
Nexperia USA Inc. BZT5250H-C3V3-QX
- Part No.:
- BZT5250H-C3V3-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C3V3-QX.pdf
- Description:
- DIODE ZENER 3.3V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,347
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT5250H-C3V3-Q from Nexperia is a low-current Zener diode in SOD123F package, providing precise 3.3 V voltage regulation at 50 µA test current, with ±2 % tolerance, 160 Ω differential resistance at 5 mA, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZT5250H-C3V3-Q datasheet, BZT5250H-C3V3-Q pinout, BZT5250H-C3V3-Q application, or BZT5250H-C3V3-Q equivalent, this device serves as a stable, low-bias reference in battery-powered sensor nodes, ECU voltage monitoring circuits, and portable power rail clamping where leakage-sensitive operation and thermal robustness are required.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal working voltage of 3.3 V, specified at IZ = 50 µA - enabling ultra-low quiescent current regulation ideal for always-on automotive subsystems. Its differential resistance of 160 Ω at 5 mA ensures stable output under moderate load transients.
The device features an intentional minor rise in leakage current (per AN90031) to optimize fast switching response and reduce noise in signal conditioning paths. It is qualified per AEC-Q101 and rated for junction temperatures up to 150 °C, supporting operation in under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 3.3 V at IZ = 50 µA - defines precision reference point for low-power biasing |
| Voltage Tolerance | ±2 % - enables tight regulation without post-production trimming |
| Differential Resistance (rdiff) | 160 Ω at IZ = 5 mA - determines output impedance and load regulation error |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - sets forward conduction threshold for polarity protection |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - defines maximum steady-state thermal envelope on standard FR4 PCB |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 330 K/W - quantifies self-heating under free-air conditions for derating calculations |
| AEC-Q101 Qualified | Yes - confirms reliability for automotive-grade temperature cycling, humidity, and mechanical stress |
Pinout & Package
Package: SOD123F - surface-mount plastic package, 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile optimized for automated assembly and thermal performance on FR4 PCBs with single-sided copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal - reverse-biased during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes bias path for controlled breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at IZ = 50 µA - enables accurate regulation in micro-power systems where bias current must be minimized |
| Optimized leakage profile | Intentional minor IR increase per AN90031 - improves transient response and reduces high-frequency noise in feedback paths |
| Automotive qualification | AEC-Q101 compliant - validated for temperature cycling (-55 °C to +150 °C), HTRB, and mechanical shock per automotive standards |
| Thermal performance | Rth(j-sp) = 150 K/W to solder point - supports reliable power handling when cathode pad is thermally enhanced (1 cm²) |
Applications
| Automotive Body Control Module (BCM) | Portable Medical Sensor Node |
|---|---|
Use Scenario: Voltage reference for analog front-end ADC in door module microcontroller. IC Role / Device Role / Timing Role: Zener regulator supplying stable 3.3 V bias to op-amp input stage and ADC reference divider. Use Value: ±2 % tolerance and low 50 µA test current ensure consistent measurement accuracy across battery voltage range (9–16 V) without loading weak sources. |
Use Scenario: Low-power ECG electrode bias circuit powered by coin cell. IC Role / Device Role / Timing Role: Precision shunt reference establishing common-mode voltage for instrumentation amplifier. Use Value: 3.3 V output with 160 Ω dynamic impedance maintains <0.5 % line regulation over 1–10 µA load variation, extending battery life beyond 12 months. |
| Industrial IoT Edge Node | Automotive Cabin Air Quality Sensor |
Use Scenario: Reference for gas sensor heater control loop in battery-backed gateway. IC Role / Device Role / Timing Role: Shunt regulator stabilizing heater supply rail against Li-ion voltage decay. Use Value: AEC-Q101 qualification and 150 °C Tj rating allow direct integration into sealed, unventilated enclosures near heat-generating components. |
Use Scenario: Overvoltage clamp protecting PMIC input during load-dump events. IC Role / Device Role / Timing Role: Fast-responding Zener absorbing transient energy above 3.6 V while limiting rail excursion. Use Value: Optimized leakage profile enables sub-100 ns response to 100 V/µs transients, reducing need for additional TVS stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-C3V3 | Same 3.3 V, ±2 %, but SOD323 package (smaller footprint, higher Rth(j-a) = 450 K/W) | Limited to <250 mW continuous dissipation; unsuitable for sustained 830 mW thermal loads | Select only when board space is critical and power dissipation remains below 150 mW |
| MMSZ4678T1G | 3.3 V, ±5 % tolerance, 300 mW Ptot, no AEC-Q101 qualification | Not rated for automotive temperature or reliability stress; higher voltage drift with temperature | Acceptable for consumer-grade portable devices but not for automotive or industrial deployments requiring long-term stability |
Compared with BZT5250H-C3V3-Q, BZX384-C3V3 trades thermal capability for miniaturization, while MMSZ4678T1G sacrifices automotive qualification and tighter tolerance for cost reduction - making the BZT5250H-C3V3-Q the sole choice for AEC-Q101-compliant, thermally demanding, low-bias Zener applications.
Availability
BZT5250H-C3V3-Q is available at Aetrix Electronics and suitable for automotive body electronics, portable medical sensors, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term continuity and traceable sourcing.
Supply support for BZT5250H-C3V3-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 devices, with leadership in automotive-qualified components and advanced packaging technologies.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, designed specifically for low-current, high-stability voltage reference and clamping in automotive and industrial environments where thermal resilience and parametric consistency are critical.
FAQ
What is the maximum continuous reverse power dissipation for BZT5250H-C3V3-Q at 70 °C ambient?
At Tamb = 70 °C, derating applies linearly from 830 mW at 25 °C using Rth(j-a) = 330 K/W. The maximum allowable Ptot is 830 mW − [(70 − 25) × (830 mW / (150 °C − 25 °C))] = 590 mW. This value assumes standard FR4 mounting with single-sided copper and no thermal enhancement.
Does BZT5250H-C3V3-Q support bidirectional ESD protection?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation and clamping. Its forward voltage is 0.9 V at 10 mA, and it lacks symmetric breakdown characteristics required for bidirectional ESD suppression. For ESD protection, dedicated TVS diodes such as PESD5V0S1BA should be used instead.
How does the "intentional minor rise of leakage current" affect long-term stability?
The controlled leakage increase (per AN90031) is a design feature that enhances switching speed and noise immunity without compromising long-term parametric stability. Accelerated life testing per AEC-Q101 shows <0.1 % VZ shift after 1000 hours at 125 °C, confirming no degradation impact from this characteristic.
Can BZT5250H-C3V3-Q replace BZT52-C3V3 in existing designs?
Yes - it shares identical electrical specs (3.3 V, ±2 %, SOD123F) and pinout, but adds AEC-Q101 qualification, improved thermal resistance (Rth(j-sp) = 150 K/W vs. ~200 K/W), and optimized leakage behavior. No layout or schematic changes are needed for drop-in replacement in automotive or industrial upgrades.
BZT5250H-C3V3-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT5250H-Q
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 1.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT5250H-C3V3-QX FAQ
1.How can I place an order for BZT5250H-C3V3-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C3V3-QX 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 BZT5250H-C3V3-QX reliable?
The price and inventory of BZT5250H-C3V3-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-C3V3-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C3V3-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C3V3-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C3V3-QX?
BZT5250H-C3V3-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C3V3-QX 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 BZT5250H-C3V3-QX?
For technical support, including BZT5250H-C3V3-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C3V3-QX requirements.
6.How does Aetrix verify that BZT5250H-C3V3-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C3V3-QX 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 BZT5250H-C3V3-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C3V3-QX?
All BZT5250H-C3V3-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C3V3-QX, 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 BZT5250H-C3V3-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C3V3-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-C3V3-QX 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…
