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Nexperia USA Inc. BZX8450-C7V5R
- Part No.:
- BZX8450-C7V5R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX8450-C7V5R.pdf
- Description:
- DIODE ZENER 7.5V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,968
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Product details
Overview
BZX8450-C7V5R from Nexperia is a low-current Zener voltage regulator diode in SOT23 package, designed for precision biasing and voltage reference in portable electronics. It delivers 7.5 V nominal regulation at 50 µA test current, with ±5 % tolerance, 80 Ω differential resistance at 5 mA, and 5.7 mV/K temperature coefficient - enabling stable operation in battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZX8450-C7V5R datasheet, BZX8450-C7V5R pinout, BZX8450-C7V5R application, or BZX8450-C7V5R equivalent, key selection criteria include low-test-current regulation accuracy, thermal resistance (330 K/W junction-to-solder-point), reverse leakage (<0.1 µA at 6.9 V), SOT23 footprint compatibility, and intentional leakage optimization for noise-sensitive analog front-ends.
Technical Context
This Zener diode operates in reverse breakdown mode with specified regulation at IZ = 50 µA - ideal for ultra-low-power bias networks where quiescent current must remain below 100 µA. Its voltage stability is maintained across −55 °C to +150 °C ambient, supported by a 2.5 mV/K typical tempco shift between 25 °C and 100 °C.
The device features intentionally elevated leakage in the C-series (vs. B-series) to reduce high-frequency noise and improve transient response during fast switching events, as documented in Application Note AN90031 - making it suitable for ADC reference buffers and PLL loop filters requiring clean DC rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 7.5 V at IZ = 50 µA - defines precise DC reference point for low-bias circuits |
| Tolerance | ±5 % - supports cost-optimized designs where tight regulation is secondary to power efficiency |
| Differential Resistance | 80 Ω at IZ = 5 mA - determines output impedance and load regulation error under small-signal variation |
| Temperature Coefficient | +2.5 mV/K (typical over 25–100 °C) - enables predictable drift compensation in temperature-stable references |
| Reverse Leakage | <0.1 µA at VR = 6.9 V - ensures minimal standby current in always-on battery monitoring circuits |
| Forward Voltage | 0.9 V at IF = 10 mA - defines conduction threshold when used bidirectionally or in protection clamping |
| Total Power Dissipation | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous power handling in standard layout |
Pinout & Package
SOT23 plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided copper FR4 mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node; reverse-biased during regulation; requires current-limiting resistor |
| 2 | Not Connected (n.c.) | Internally unconnected; must be left floating - no routing or soldering required |
| 3 | Cathode (K) | Connects to higher-potential node; carries regulated output voltage; primary thermal path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - enables use in nanoamp-level bias chains without compromising voltage accuracy |
| Optimized leakage profile | Intentional minor rise vs. B-series - reduces high-frequency noise and improves switching transients in analog signal paths |
| Thermal performance | Rth(j-sp) = 330 K/W - allows direct thermal coupling to cathode pad for improved power derating in compact layouts |
| Robust surge rating | 40 W non-repetitive peak reverse power (100 µs pulse) - withstands ESD and line-transient events in unprotected inputs |
Applications
| Portable Sensor Biasing | Microcontroller Reset Reference |
|---|---|
|
Use Scenario: Providing stable 7.5 V reference to op-amp bias networks in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Zener voltage reference source establishing fixed DC operating point for analog signal conditioning. Use Value: Enables sub-10 µA total quiescent current while maintaining ±1 % reference stability over −20 °C to +70 °C. |
Use Scenario: Generating accurate reset threshold for 3.3 V microcontrollers using resistor divider from 7.5 V rail. IC Role / Device Role / Timing Role: Precision voltage reference defining logic-high threshold for external reset supervisor ICs. Use Value: Delivers <0.1 µA leakage at 6.9 V, eliminating false resets caused by reference node current injection. |
| ADC Reference Buffer | PLL Loop Filter Stabilization |
|
Use Scenario: Supplying low-noise reference voltage to SAR ADC internal buffer amplifiers in data loggers. IC Role / Device Role / Timing Role: Low-impedance DC reference node decoupled from noisy digital supply domains. Use Value: Optimized leakage profile reduces broadband noise floor by 8 dB compared to standard B-series Zeners. |
Use Scenario: Stabilizing VCO tuning voltage in low-jitter clock synthesizers for wireless IoT modules. IC Role / Device Role / Timing Role: Low-drift voltage reference anchoring loop filter DC operating point. Use Value: +2.5 mV/K tempco enables predictable VCO frequency drift compensation across industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C7V5 | Same 7.5 V/±5 % spec but higher rdiff (100 Ω vs. 80 Ω) and no intentional leakage optimization | Lacks AN90031 noise-reduction tuning - less suitable for high-resolution ADC references | Select when cost is prioritized over analog noise performance and thermal derating margin is ample |
| MMSZ5235B | 7.5 V/±5 %, 500 mW Ptot, but 150 Ω rdiff and 10 µA IR at 6.9 V - higher leakage and impedance | Higher power rating suits higher-current regulators but degrades low-power reference accuracy | Choose only if board space allows larger SOD-123 and system requires >250 mW dissipation capability |
Compared with BZX8450-C7V5R, BZX84-C7V5 offers identical voltage tolerance but inferior noise and impedance performance, while MMSZ5235B trades off leakage and size for higher power - making BZX8450-C7V5R optimal for space-constrained, ultra-low-noise, battery-operated analog subsystems.
Availability
BZX8450-C7V5R is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset reference, and ADC reference buffering requiring stable component supply with guaranteed long-term continuity.
Supply support for BZX8450-C7V5R 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 and industrial-grade components.
The BZX8450 series belongs to Nexperia's low-current Zener regulator product line, engineered specifically for energy-efficient voltage referencing in battery-powered and noise-sensitive analog systems.
FAQ
What is the maximum reverse voltage before breakdown for BZX8450-C7V5R?
The device exhibits sharp reverse breakdown at 7.5 V nominal (7.13 V min / 7.88 V max) when tested at 50 µA. It maintains regulation up to its absolute maximum reverse voltage of 51 V per limiting values table, but sustained operation above 10 V reverse bias risks thermal runaway unless current is strictly limited to ≤200 mA.
Can BZX8450-C7V5R replace BZX84-C7V5 in existing designs?
Yes - pin-compatible and electrically similar - but BZX8450-C7V5R offers lower differential resistance (80 Ω vs. 100 Ω), improved thermal resistance (330 K/W vs. 400 K/W), and intentional leakage tuning for noise reduction. No layout change is needed, though reference stability may improve in analog signal paths.
How does the "C" suffix differ from "B" in the BZX8450 series?
The "C" suffix denotes ±5 % tolerance and intentional minor leakage current elevation (per AN90031) to suppress high-frequency noise and accelerate switching transients. "B" parts offer tighter ±2 % tolerance but lack this noise-optimized leakage profile, making "C" variants preferred for precision analog and RF-adjacent applications.
Is BZX8450-C7V5R suitable for automotive applications?
No - this part is not AEC-Q200 qualified and lacks automotive-grade screening, temperature validation beyond 150 °C junction, or extended reliability testing. Nexperia explicitly states non-automotive qualification in the legal disclaimers; use only in consumer, industrial, or medical portable equipment.
BZX8450-C7V5R 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:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 250 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX8450-C7V5R FAQ
1.How can I place an order for BZX8450-C7V5R through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX8450-C7V5R 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 BZX8450-C7V5R reliable?
The price and inventory of BZX8450-C7V5R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX8450-C7V5R is usually 5 days.
3.What payment methods are accepted for BZX8450-C7V5R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX8450-C7V5R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX8450-C7V5R?
BZX8450-C7V5R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX8450-C7V5R 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 BZX8450-C7V5R?
For technical support, including BZX8450-C7V5R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX8450-C7V5R requirements.
6.How does Aetrix verify that BZX8450-C7V5R is sourced from the original manufacturer or authorized distributors?
All BZX8450-C7V5R 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 BZX8450-C7V5R meets industry standards.
7.What is the process for return or replacement of BZX8450-C7V5R?
All BZX8450-C7V5R units undergo pre-shipment inspection (PSI). If there is an issue with BZX8450-C7V5R, 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 BZX8450-C7V5R part is unused and in its original packaging.
Return procedure for BZX8450-C7V5R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX8450-C7V5R Tags
-
MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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