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Nexperia USA Inc. BZT5250H-B7V5-QX
- Part No.:
- BZT5250H-B7V5-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B7V5-QX.pdf
- Description:
- DIODE ZENER 7.5V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:2,683
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Product details
Overview
BZT5250H-B7V5-QX from Nexperia is a low-current Zener diode in SOD123F package, designed for precision voltage regulation at 7.5 V nominal with ±2 % tolerance, specified at 50 µA test current, and rated for 830 mW total power dissipation; it is AEC-Q101 qualified and used in automotive body control modules for sensor biasing and reference stabilization.
For engineers reviewing the BZT5250H-B7V5-QX datasheet, BZT5250H-B7V5-QX pinout, BZT5250H-B7V5-QX application, or BZT5250H-B7V5-QX equivalent, key selection criteria include its 7.5 V Zener voltage, low 50 µA test current, ±2 % tolerance, AEC-Q101 qualification, and SOD123F surface-mount footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates as a two-terminal shunt voltage regulator, maintaining stable 7.5 V output across load variations using reverse-biased junction conduction. Its differential resistance of 80 Ω at 5 mA ensures minimal voltage deviation under dynamic current conditions.
Designed for low-power systems, it features intentional minor leakage current optimization per AN90031 to reduce switching noise and improve transient response in battery-powered automotive subsystems such as door module microcontrollers and LIN transceiver references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.35 V to 7.65 V at IZ = 50 µA - tight ±2 % tolerance enables accurate 7.5 V reference without trimming |
| Differential Resistance (rdiff) | 80 Ω max at IZ = 5 mA - low impedance maintains regulation stability under varying load currents |
| Temperature Coefficient (SZ) | +2.5 mV/K - positive drift compensates for typical IC reference temperature dependence | Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports bidirectional protection or dual-use in clamp circuits |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - sufficient headroom for transient surges in 12 V automotive environments |
| Junction Temperature (Tj) | 150 °C max - enables operation in under-hood ECUs with ambient up to +105 °C |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTOL, TC, and ESD testing per AEC standard |
Pinout & Package
SOD123F plastic surface-mount package: 2.6 mm × 1.6 mm × 1.1 mm body, single-sided FR4 PCB mount, cathode-side thermal pad (1 cm²), marking bar indicates cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated voltage node; thermal pad on cathode side improves heat dissipation in high-ambient designs |
| 2 | Anode (A) | Ground or lower-potential reference point; reverse-biased operation requires anode at lower potential than cathode |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - reduces quiescent current in always-on automotive modules like smart junction boxes |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - suppresses high-frequency noise in CAN/LIN bus reference rails |
| Automotive qualification | AEC-Q101 compliant - meets stress test requirements for temperature cycling, humidity, and mechanical shock in vehicle applications |
| Small-form-factor packaging | SOD123F footprint - saves >40 % board area vs. DO-35, enabling compact placement near ASIC power pins |
Applications
| Automotive Door Control Module | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Provides stable 7.5 V reference for Hall-effect position sensors and window motor drivers in OEM door modules. IC Role / Device Role / Timing Role: Shunt Zener regulator supplying bias to analog front-end amplifiers and MCU ADC references. Use Value: ±2 % tolerance and +2.5 mV/K coefficient ensure <±15 mV drift over −40 °C to +125 °C junction range, meeting ASIL-B functional safety margin. |
Use Scenario: Stabilizes excitation voltage for 4–20 mA loop-powered pressure transmitters in factory automation. IC Role / Device Role / Timing Role: Precision voltage clamp regulating bridge sensor supply against 24 V rail fluctuations. Use Value: 80 Ω rdiff limits output variation to <0.4 V across 100 µA–2 mA load changes, preserving measurement linearity. |
| Portable Medical Diagnostic Device | Infotainment System Power Sequencing |
|
Use Scenario: Supplies clean 7.5 V reference to low-power op-amps in handheld ECG signal acquisition circuits. IC Role / Device Role / Timing Role: Low-current Zener regulator enabling battery-operated operation with <1 µA standby leakage. Use Value: 50 µA test current allows full regulation down to 10 µA operating current, extending coin-cell life by >30 % vs. standard Zeners. |
Use Scenario: Generates controlled power-up delay and reset threshold for infotainment SoCs during cold cranking (6–16 V battery). IC Role / Device Role / Timing Role: Voltage reference input to supervisor IC monitoring 7.5 V LDO output. Use Value: AEC-Q101 qualification ensures reliable startup sequencing across 100,000+ engine cycles without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | ±5 % tolerance, 300 mW Ptot, SOT23 package | Higher voltage drift (>±0.375 V), unsuitable for ASIL-B systems | Select only for cost-sensitive non-automotive consumer designs where ±5 % regulation is acceptable |
| MMSZ5237B | ±5 % tolerance, 500 mW Ptot, SOD123 package (no thermal pad) | No AEC-Q101 qualification; Rth(j-sp) = 180 K/W vs. 150 K/W for BZT5250H-B7V5-QX | Use in industrial controls with ambient <85 °C; avoid under-hood or high-reliability automotive use |
Compared with BZX84-C7V5 and MMSZ5237B, the BZT5250H-B7V5-QX delivers tighter tolerance, higher power rating, lower thermal resistance, and automotive qualification-making it the sole choice for safety-critical 7.5 V reference in AEC-compliant ECUs.
Availability
BZT5250H-B7V5-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, portable medical diagnostics, and infotainment power sequencing requiring stable component supply across extended temperature and lifecycle demands.
Supply support for BZT5250H-B7V5-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for low-current, noise-sensitive voltage regulation in automotive and industrial edge nodes where precision, longevity, and thermal robustness are critical.
FAQ
What is the maximum reverse current (IR) at 7.0 V for BZT5250H-B7V5-QX?
At 7.0 V reverse bias and Tj = 25 °C, the maximum reverse current is 0.1 µA. This ultra-low leakage ensures minimal power loss in always-on automotive circuits such as door module wake-up detection paths.
Can BZT5250H-B7V5-QX be used in place of a 7.5 V TL431 shunt regulator?
No - the BZT5250H-B7V5-QX is a passive two-terminal Zener diode without adjustable feedback or current-sink capability. It lacks the 1–100 mA sink current range and 0.5 % initial accuracy of TL431, making it unsuitable for programmable or high-precision closed-loop regulation.
Is the SOD123F package lead-free and RoHS compliant?
Yes - the SOD123F package uses lead-free terminations and complies with EU RoHS Directive 2011/65/EU and REACH SVHC regulations, with full material declarations available via Nexperia's product change notifications.
What is the thermal resistance from junction to solder point (Rth(j-sp)) for this device?
Rth(j-sp) is 150 K/W when mounted on an FR4 PCB with single-sided copper, tin-plated, and a 1 cm² cathode mounting pad. This value enables direct thermal coupling to ground planes in automotive PCBs for sustained 500 mW operation at +85 °C ambient.
BZT5250H-B7V5-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):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 5.7 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-B7V5-QX FAQ
1.How can I place an order for BZT5250H-B7V5-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B7V5-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-B7V5-QX reliable?
The price and inventory of BZT5250H-B7V5-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-B7V5-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B7V5-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B7V5-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B7V5-QX?
BZT5250H-B7V5-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B7V5-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-B7V5-QX?
For technical support, including BZT5250H-B7V5-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B7V5-QX requirements.
6.How does Aetrix verify that BZT5250H-B7V5-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B7V5-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-B7V5-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B7V5-QX?
All BZT5250H-B7V5-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B7V5-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-B7V5-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B7V5-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B7V5-QX Tags
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