My Inquiry
My Account
Nexperia USA Inc. BZT5250H-B33-QX
- Part No.:
- BZT5250H-B33-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B33-QX.pdf
- Description:
- DIODE ZENER 33V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,735
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZT5250H-B33-QX from Nexperia is a low-current Zener diode in SOD123F package, rated for 33 V nominal Zener voltage at 50 µA test current, with ±2 % tolerance, 830 mW total power dissipation, and AEC-Q101 qualification for automotive use. It serves as a precision voltage reference or low-power regulation element in battery-powered sensor nodes and ECU bias circuits.
For engineers reviewing the BZT5250H-B33-QX datasheet, BZT5250H-B33-QX pinout, BZT5250H-B33-QX application, or BZT5250H-B33-QX equivalent, key selection criteria include its 33 V Zener voltage at 50 µA, low leakage optimization per AN90031, SOD123F thermal resistance (150 K/W junction-to-solder point), and AEC-Q101 qualification status.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified Zener voltage of 32.3 V (min) to 33.7 V (max) at IZ = 50 µA, exhibiting a temperature coefficient of +0.05 mV/K and differential resistance ≤325 Ω at IZ = 5 mA. Its design targets stable low-bias operation where minimal quiescent current is critical.
The device features intentional minor leakage current rise to reduce switching noise, per application note AN90031, and achieves 150 °C maximum junction temperature under ambient conditions ranging from –55 °C to +150 °C. Thermal performance is defined with 1 cm² cathode pad on FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 32.3 V to 33.7 V at IZ = 50 µA - defines precise regulation threshold for low-current bias networks |
| Tolerance | ±2 % - enables tight voltage reference accuracy without post-calibration in automotive ECUs |
| Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - supports sustained operation in compact SMD layouts with defined copper pad |
| Forward Voltage (VF) | ≤ 0.9 V at IF = 10 mA - ensures low loss during forward conduction in protection or clamping configurations |
| Reverse Current (IR) | ≤ 0.05 µA at VR = 25.0 V - guarantees ultra-low standby leakage in always-on vehicle modules |
| Thermal Resistance (Rth(j-sp)) | 150 K/W - quantifies junction-to-solder-point heat transfer efficiency for thermal design validation |
| AEC-Q101 Qualified | Yes - validated for automotive discrete semiconductor stress testing including HTGB, HTRB, and temperature cycling |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead, single-sided copper FR4 mounting, cathode marked by bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current Zener specification | Rated at 50 µA - enables accurate voltage setting in microamp-level bias chains for CMOS sensors and RF front-ends |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise and improves transient response in feedback paths |
| AEC-Q101 qualification | Qualified for automotive discrete semiconductors - meets HTGB, HTRB, and mechanical shock requirements for under-hood deployment |
| Small-form-factor SMD package | SOD123F footprint - supports high-density PCB layouts while maintaining 33 V regulation capability in <3 mm² area |
Applications
| Automotive Body Control Module (BCM) Bias Supply | Industrial IoT Sensor Node Reference |
|---|---|
Use Scenario: Providing stable 33 V reference for LIN transceiver bias and microcontroller reset circuitry in door module ECUs. IC Role / Device Role / Timing Role: Zener voltage reference element operating in reverse breakdown to clamp and regulate local supply rail. Use Value: ±2 % tolerance and AEC-Q101 qualification ensure long-term stability across –40 °C to +125 °C ambient without derating. |
Use Scenario: Generating precise 33 V reference for analog front-end amplifiers in battery-powered environmental monitoring nodes. IC Role / Device Role / Timing Role: Low-current voltage regulator supplying reference voltage to ADCs and op-amps with minimal standby drain. Use Value: 50 µA test current rating and ≤0.05 µA leakage at 25 V enable multi-year operation on coin-cell batteries. |
| Automotive Camera Module Power Sequencing | Medical Wearable Low-Power Reference |
Use Scenario: Setting startup threshold for power-good detection in ADAS camera modules using discrete reset logic. IC Role / Device Role / Timing Role: Zener-based voltage monitor triggering POR circuit when main 3.3 V rail reaches 90 % of target. Use Value: Tight 32.3–33.7 V window and low thermal drift (+0.05 mV/K) ensure consistent sequencing across temperature extremes. |
Use Scenario: Delivering stable reference for biosignal acquisition circuits in disposable patch monitors powered by Li-SOCl₂ cells. IC Role / Device Role / Timing Role: Precision voltage reference source for instrumentation amplifier gain-setting and ADC reference divider. Use Value: Optimized leakage behavior per AN90031 suppresses switching noise that would otherwise corrupt µV-level biopotential signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5250BS | 33 V nominal, ±5 % tolerance, SOD-323 package, 350 mW Ptot | Lacks AEC-Q101 qualification; higher tolerance increases reference uncertainty in automotive designs | Acceptable for cost-sensitive industrial applications where ±5 % voltage error is tolerable and qualification is not required |
| Vishay BZX84-C33 | 33 V nominal, ±5 % tolerance, SOT-23 package, 300 mW Ptot, no AEC-Q101 | Lower power rating and larger Rth(j-a) limit thermal headroom in dense layouts | Suitable only for non-automotive, low-density PCBs with ample copper area and relaxed accuracy requirements |
Compared with MMBZ5250BS and BZX84-C33, BZT5250H-B33-QX delivers tighter ±2 % tolerance, higher 830 mW power handling, lower thermal resistance, and mandatory AEC-Q101 compliance-making it the sole choice for production automotive voltage reference functions requiring long-term reliability and precision.
Availability
BZT5250H-B33-QX is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor nodes, ADAS camera power sequencing, and medical wearable reference circuits requiring stable component supply across extended temperature ranges and lifecycle commitments.
Supply support for BZT5250H-B33-QX 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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current, high-stability voltage reference and regulation in automotive electronics and portable industrial systems.
FAQ
What is the Zener test current for BZT5250H-B33-QX?
The BZT5250H-B33-QX is specified at a Zener test current of 50 µA, enabling accurate voltage regulation in ultra-low-power applications such as battery-backed sensor biasing and always-on automotive modules. This value is explicitly defined in Table 8 of the datasheet and confirmed across all electrical characteristics plots.
Is BZT5250H-B33-QX qualified for automotive use?
Yes, BZT5250H-B33-QX is fully qualified to AEC-Q101 standards for discrete semiconductors, including stress tests for high-temperature gate bias, high-temperature reverse bias, and temperature cycling. This qualification is documented in Section 11 and the Legal Information section of the datasheet.
What does the "B" suffix indicate in BZT5250H-B33-QX?
The "B" suffix denotes the ±2 % Zener voltage tolerance grade, distinguishing it from the "C" grade (±5 %). For BZT5250H-B33-QX, this corresponds to a guaranteed VZ range of 32.3 V to 33.7 V at IZ = 50 µA, as shown in Table 8 of the datasheet.
How does the SOD123F package affect thermal performance?
The SOD123F package provides a junction-to-solder-point thermal resistance of 150 K/W when mounted on an FR4 PCB with a 1 cm² cathode pad, enabling reliable 830 mW power dissipation at Tamb ≤ 25 °C. This value is measured per IEC 60747-17 and verified in Table 6 of the datasheet.
BZT5250H-B33-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):
- 33 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25 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-B33-QX FAQ
1.How can I place an order for BZT5250H-B33-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B33-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-B33-QX reliable?
The price and inventory of BZT5250H-B33-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-B33-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B33-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B33-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B33-QX?
BZT5250H-B33-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B33-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-B33-QX?
For technical support, including BZT5250H-B33-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B33-QX requirements.
6.How does Aetrix verify that BZT5250H-B33-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B33-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-B33-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B33-QX?
All BZT5250H-B33-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B33-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-B33-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B33-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B33-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…
