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Nexperia USA Inc. BZX84-B10,235
- Part No.:
- BZX84-B10,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84-B10,235.pdf
- Description:
- DIODE ZENER 10V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,772
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Product details
Overview
BZX84-B10,235 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 (TO-236AB) package, rated for 10 V nominal breakdown voltage at 5 mA test current, 250 mW total power dissipation, and 40 W non-repetitive peak reverse power. It serves as a precision reference or overvoltage clamp in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the BZX84-B10,235 datasheet, BZX84-B10,235 pinout, BZX84-B10,235 application, or BZX84-B10,235 equivalent, key selection criteria include Zener voltage tolerance (±2 %), thermal resistance (500 K/W junction-to-ambient), differential resistance (≤150 Ω at IZ = 5 mA), and SOT23 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates in reverse-bias breakdown mode to maintain stable DC voltage across its cathode-anode terminals under varying load or supply conditions. Its Zener voltage is specified at 5 mA test current with a temperature coefficient of +0.2 mV/K, indicating slight positive drift with junction temperature rise.
The diode exhibits low forward voltage (≤0.9 V at 10 mA), negligible capacitance (≤90 pF at 0 V), and supports transient clamping via 40 W non-repetitive surge capability (100 μs pulse). It is not automotive-qualified and is intended for industrial, consumer, and general-purpose embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.80 V to 10.20 V at IZ = 5 mA - defines regulation setpoint with ±2 % tolerance for stable reference generation |
| Differential Resistance (rdif) | ≤150 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | ≤20 μA at VR = 7.6 V - ensures low leakage before breakdown onset |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets continuous DC power limit for thermal design |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W at tp = 100 μs - enables transient overvoltage suppression without failure |
| Junction Temperature (Tj) | −55 °C to +150 °C - defines operational thermal envelope for reliability in ambient extremes |
| Thermal Resistance (Rth(j-a)) | 500 K/W - quantifies self-heating per watt on standard FR4 layout, critical for derating calculations |
Pinout & Package
SOT23 (TO-236AB) surface-mount plastic package with 3 leads; compact 2.9 mm × 1.3 mm footprint, 1.1 mm height, and tin-plated terminations compatible with reflow and wave soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node during regulation |
| 2 | Not Connected (n.c.) | Internally unconnected lead; must remain floating-no PCB trace or pad required |
| 3 | Cathode (K) | Reverse-biased terminal; connects to regulated output or clamped node |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants (BZX84-C10), reducing calibration overhead in reference circuits |
| 250 mW continuous power rating | Supports stable operation in low-current bias networks (e.g., op-amp references, microcontroller reset supervisors) |
| 40 W non-repetitive surge capability | Clamps ESD or inductive kick transients without degradation when used with series current-limiting resistor |
| Low 90 pF junction capacitance | Minimizes high-frequency loading in RF detector or fast-switching feedback paths |
| SOT23 package compatibility | Facilitates automated placement and reflow on space-constrained boards, matching industry-standard pick-and-place tooling |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
|
Use Scenario: Providing stable 10 V reference for ADC voltage dividers or op-amp biasing in battery-powered sensor nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential relative to ground. Use Value: Delivers ±2 % accuracy at 5 mA, enabling <1 LSB error in 10-bit ADC systems without trimming. |
Use Scenario: Clamping 12 V rail against surges in automotive body control modules using discrete protection. IC Role / Device Role / Timing Role: Voltage clamp limiting maximum rail voltage to protect downstream logic ICs. Use Value: Absorbs 40 W transient energy (100 μs) while holding voltage ≤10.2 V, preventing latch-up in 3.3 V/5 V peripherals. |
| Signal Level Shifting | Current Source Biasing |
|
Use Scenario: Translating 3.3 V logic signals to 10 V interface levels for legacy industrial sensors. IC Role / Device Role / Timing Role: Bidirectional level translator using Zener forward drop and reverse breakdown. Use Value: Forward VF ≤0.9 V and reverse VZ = 10 V enable clean high/low state mapping with minimal propagation delay. |
Use Scenario: Setting bias current for low-noise JFET amplifiers in audio preamplifier stages. IC Role / Device Role / Timing Role: Constant-current source formed with series resistor and Zener-regulated voltage drop. Use Value: 150 Ω differential resistance ensures <0.15 % current variation over 10 % load change, preserving gain stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C10,215 | ±5 % tolerance (9.4 V–10.6 V), higher IR (≤50 μA at 7.6 V), same SOT23 package | Acceptable where cost-sensitive designs tolerate wider regulation spread and higher leakage | Select for non-critical biasing where ±2 % is unnecessary and BOM simplification is prioritized |
| MMSZ4689-7-F | ±5 % tolerance (9.5 V–10.5 V), 500 mW Ptot, 350 Ω rdif, same SOT23 footprint | Higher power handling but poorer regulation stability; suited for higher-current clamping | Choose when >250 mW continuous dissipation is required, accepting reduced voltage precision |
Compared with BZX84-B10,235, the BZX84-C10,215 trades voltage accuracy for cost and the MMSZ4689-7-F trades regulation tightness for thermal robustness-making the BZX84-B10,235 optimal for precision low-power reference use cases where ±2 % tolerance and low rdif are essential.
Availability
BZX84-B10,235 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and signal level shifting requiring stable component supply and consistent SOT23 packaging across production batches.
Supply support for BZX84-B10,235 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and manufacturability.
The BZX84 series belongs to Nexperia's precision Zener diode product line, engineered for low-power voltage reference and clamping in space-constrained, cost-sensitive applications across consumer, industrial, and computing markets.
FAQ
What is the maximum continuous reverse current this diode can handle?
The BZX84-B10,235 is rated for a maximum forward current of 200 mA, but its continuous reverse (Zener) current is limited by power dissipation: at 25 °C ambient, IZ(max) ≈ 25 mA (250 mW ÷ 10 V). Derating applies above 25 °C per the 500 K/W thermal resistance.
Can this Zener diode be used in parallel for higher power handling?
No-Zener diodes exhibit manufacturing variations in VZ and dynamic resistance, causing current imbalance and thermal runaway when paralleled. For higher power, use a single higher-rated device like the MMSZ4689-7-F or implement active regulation.
Is the not-connected (n.c.) pin electrically isolated or internally tied?
Pin 2 is confirmed as internally not connected per Nexperia's pinning diagram and package cross-section. It must remain unconnected on PCB layout-no routing, stitching, or grounding-to avoid mechanical stress or unintended coupling.
How does temperature affect the 10 V regulation accuracy?
At IZ = 5 mA, the temperature coefficient is +0.2 mV/K. Over a −40 °C to +85 °C ambient range, VZ shifts by approximately ±25 mV (±0.25 %), remaining within the ±2 % initial tolerance band and supporting stable performance in non-automotive environments.
BZX84-B10,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZX84-B10,235 FAQ
1.How can I place an order for BZX84-B10,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84-B10,235 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 BZX84-B10,235 reliable?
The price and inventory of BZX84-B10,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84-B10,235 is usually 5 days.
3.What payment methods are accepted for BZX84-B10,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84-B10,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84-B10,235?
BZX84-B10,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84-B10,235 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 BZX84-B10,235?
For technical support, including BZX84-B10,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84-B10,235 requirements.
6.How does Aetrix verify that BZX84-B10,235 is sourced from the original manufacturer or authorized distributors?
All BZX84-B10,235 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 BZX84-B10,235 meets industry standards.
7.What is the process for return or replacement of BZX84-B10,235?
All BZX84-B10,235 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84-B10,235, 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 BZX84-B10,235 part is unused and in its original packaging.
Return procedure for BZX84-B10,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84-B10,235 Tags
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MMBZ5240B-7-F
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MMSZ5231B-7-F
Diodes Incorporated
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onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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SMAZ12-13-F
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