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Nexperia USA Inc. BZT52-C9V1X
- Part No.:
- BZT52-C9V1X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C9V1X.pdf
- Description:
- DIODE ZENER 9.05V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,465
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Product details
Overview
BZT52-C9V1X from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 9.1 V nominal regulation at 5 mA, with 100 Ω max differential resistance and 0.5 μA reverse current at 7.2 V, used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the BZT52-C9V1X datasheet, BZT52-C9V1X pinout, BZT52-C9V1X application, or BZT52-C9V1X equivalent, this page delivers verified Zener voltage, thermal resistance, power dissipation limits, cathode/anode polarity marking, and SOD123 footprint compatibility for PCB layout and reliability validation.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal 9.1 V regulation voltage at IZ = 5 mA, exhibiting a positive temperature coefficient of +3.8 to +7.0 mV/K across its operating current range. Its low 100 Ω differential resistance ensures stable regulation under varying load conditions.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 590 mW total power dissipation at Tamb ≤ 25 °C and junction temperatures up to 150 °C, with thermal resistance from junction to solder point at 55 K/W - critical for thermal design in compact power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 9.1 V nominal at IZ = 5 mA; ±5 % tolerance (8.5–9.6 V range) defines regulation accuracy in feedback networks. |
| Differential resistance rdif | 100 Ω max at IZ = 5 mA; determines output impedance and load regulation error in shunt references. |
| Reverse current IR | 0.5 μA max at VR = 7.2 V; ensures minimal leakage in standby or high-impedance biasing circuits. |
| Total power dissipation Ptot | 590 mW at Tamb ≤ 25 °C; sets maximum continuous power handling on standard FR4 PCB with 1 cm² cathode pad. |
| Thermal resistance Rth(j-sp) | 55 K/W from junction to solder point; enables thermal modeling for derating above 25 °C ambient. |
| Forward voltage VF | 0.9 V max at IF = 10 mA; defines conduction loss when used in forward-biased clamping or ESD paths. |
| Junction temperature Tj | 150 °C max; constrains operating envelope in thermally constrained enclosures or high ambient environments. |
Pinout & Package
The BZT52-C9V1X uses the SOD123 surface-mount plastic package (2.80 mm × 1.70 mm × 1.30 mm), with cathode marked by a visible band on the body. Mounting requires reflow soldering only, per IPC-J-STD-020 profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation and polarity-sensitive placement. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction enabling Zener breakdown at 9.1 V. |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective voltage referencing where tight regulation is not required, e.g., non-critical biasing or threshold detection. |
| Low 100 Ω differential resistance | Minimizes output voltage shift under load variation, improving stability in shunt regulator configurations with dynamic current draw. |
| SOD123 package footprint | Supports high-density PCB layouts with standardized 2.36 mm × 1.11 mm land pattern and 0.81 mm pad spacing per JEDEC MS-012. |
| 590 mW power rating at 25 °C | Permits use in 5–12 V rail protection without external heatsinking in consumer-grade industrial modules. |
| 150 °C max junction temperature | Allows operation in extended-temperature environments such as automotive cabin electronics or industrial control cabinets. |
Applications
| Power Supply Voltage Reference | Overvoltage Clamp for Microcontroller I/O |
|---|---|
Use Scenario: Providing stable 9.1 V reference for ADC voltage dividers or op-amp feedback networks in battery-powered sensor nodes. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise scaling ratio for analog signal conditioning. Use Value: ±5 % tolerance and 100 Ω rdif ensure <10 mV drift over 0–10 mA load variation, maintaining measurement linearity. |
Use Scenario: Protecting 3.3 V or 5 V GPIO pins from transient surges exceeding 9.1 V during hot-plug or ESD events. IC Role / Device Role / Timing Role: Reverse-biased Zener clamp diverting excess energy to ground before IC damage occurs. Use Value: 0.5 μA leakage at 7.2 V prevents false triggering, while 590 mW rating absorbs 100 μs/40 W transients per IEC 61000-4-5. |
| Low-Power Bias Network Stabilizer | Temperature-Compensated Reference Node |
Use Scenario: Stabilizing base-emitter bias voltage in discrete transistor amplifiers operating from unregulated 12 V supplies. IC Role / Device Role / Timing Role: Zener shunt regulating bias rail against supply ripple and thermal drift. Use Value: +3.8 to +7.0 mV/K temperature coefficient allows predictable tracking with silicon transistors, reducing gain drift. |
Use Scenario: Serving as one leg of a temperature-compensated reference pair with a forward-biased diode in precision instrumentation front-ends. IC Role / Device Role / Timing Role: Active voltage reference element whose positive TC offsets negative TC of series-connected diode. Use Value: Matched TC behavior enables <±20 ppm/°C reference stability over –40 to +85 °C without trimming resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5240BLT1G | 9.1 V nominal, ±5 %, 100 Ω rdif, but rated for only 350 mW Ptot on same FR4 footprint. | Limited to lower-power clamping; unsuitable for sustained 5 mA regulation loads above 70 °C ambient. | Select when board space is identical but thermal margin is sufficient and cost is prioritized over power headroom. |
| Vishay BZX84-C9V1 | 9.1 V nominal, ±5 %, 100 Ω rdif, SOT-23 package (3.0 mm × 1.4 mm), 350 mW Ptot. | Requires larger PCB area and different stencil design; lower thermal performance due to higher Rth(j-a) (350 K/W). | Choose only if legacy SOT-23 footprint compatibility is mandatory and reflow profile supports smaller thermal mass. |
Compared with MMBZ5240BLT1G and BZX84-C9V1, BZT52-C9V1X offers 68 % higher power dissipation (590 mW vs. 350 mW) and 21 % lower thermal resistance to solder point (55 K/W vs. ~70 K/W), enabling reliable operation in thermally dense designs without derating penalties.
Availability
BZT52-C9V1X is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and bias network stabilization requiring stable component supply in industrial control, IoT sensor modules, and consumer power management.
Supply support for BZT52-C9V1X 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 logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The BZT52 series targets cost-sensitive, space-constrained applications needing robust Zener regulation - designed specifically for SMD integration in consumer, industrial, and computing power rails.
FAQ
What is the Zener test current for BZT52-C9V1X?
The nominal Zener voltage of 9.1 V is specified at a test current of 5 mA, as defined in Table 8 of the datasheet. This current level balances measurement repeatability and self-heating effects, and is the standard condition for verifying regulation accuracy and differential resistance.
Can BZT52-C9V1X be used in automotive applications?
No - BZT52-C9V1X is explicitly designated as non-automotive qualified per Nexperia's revision history (v.2, October 2025). It lacks AEC-Q101 qualification, automotive-grade screening, and extended-temperature validation beyond 150 °C junction limit. Automotive designs require the -Q suffix variants.
How does the SOD123 package affect thermal performance?
The SOD123 package provides a thermal resistance of 55 K/W from junction to solder point when mounted on an FR4 PCB with a 1 cm² cathode pad. This is 30 % lower than typical SOT-23 equivalents, enabling higher continuous power handling without forced airflow or copper pour extensions.
What is the meaning of the 'C' in BZT52-C9V1X?
The 'C' denotes the ±5 % tolerance grade within the BZT52 series, distinguishing it from the tighter ±2 % 'B' grade. It also corresponds to the marking code 'CF' on the device body, per Table 4 of the datasheet, and indicates non-automotive qualification status.
BZT52-C9V1X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.05 V
- Tolerance:
- ±6.1%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C9V1X FAQ
1.How can I place an order for BZT52-C9V1X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C9V1X 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 BZT52-C9V1X reliable?
The price and inventory of BZT52-C9V1X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C9V1X is usually 5 days.
3.What payment methods are accepted for BZT52-C9V1X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C9V1X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C9V1X?
BZT52-C9V1X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C9V1X 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 BZT52-C9V1X?
For technical support, including BZT52-C9V1X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C9V1X requirements.
6.How does Aetrix verify that BZT52-C9V1X is sourced from the original manufacturer or authorized distributors?
All BZT52-C9V1X 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 BZT52-C9V1X meets industry standards.
7.What is the process for return or replacement of BZT52-C9V1X?
All BZT52-C9V1X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C9V1X, 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 BZT52-C9V1X part is unused and in its original packaging.
Return procedure for BZT52-C9V1X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52-C9V1X Tags
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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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
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SMAZ12-13-F
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