BZX84B10-7-F - 10V 300mW Precision Zener Diode | Diodes Inc
部品番号: BZX84B10-7-F ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0.18 | $0.18 |
| 10 | $0.16 | $1.60 |
| 100 | $0.13 | $13.00 |
| 500 | $0.1 | $50.00 |
| 1,000 | $0.085 | $85.00 |
| 3,000 | $0.07 | $210.00 |
BZX84B10-7-F 概要
A Zener diode is a specialized PN-junction diode engineered to operate in the reverse-breakdown (Zener) region, providing a stable reference voltage that is largely independent of current and temperature. Within the broader semiconductor taxonomy, Zener diodes sit under discrete semiconductors -> diodes -> voltage references. They are widely used as shunt regulators, voltage clamps, and precision reference elements where a low-cost, low-noise DC reference is required.
Key features of the BZX84B10-7-F include a nominal Zener voltage of 10 V at 5 mA test current, ±2% voltage tolerance (BZX84B-series grade), low leakage current, and a maximum power dissipation of 350 mW on a standard FR-4 PCB. The SOT-23 package supports automated assembly processes and is fully RoHS compliant with halogen-free and antimony-free "Green Device" construction.
Internally, the BZX84B10-7-F uses a diffused silicon PN junction optimized for low dynamic impedance at the rated test current, delivering tight voltage regulation across the specified operating range. The -7-F suffix denotes the 7-inch reel packaging format compatible with automated pick-and-place equipment, while the -F designation confirms lead-free, fully RoHS-compliant terminal finish.
Typical applications include voltage reference circuits in analog front-ends, ADC/DAC reference rails, overvoltage protection in portable electronics, switching-mode power supply feedback networks, and automotive ECU sensor biasing. The wide tolerance grade and AEC-Q101 qualification make the part suitable for harsh-environment and safety-critical designs.
When designing with this Zener, ensure the total power dissipation (P = VZ × IZ) stays below 350 mW derated for ambient temperature, and place a series resistor sized to limit the maximum current under worst-case input voltage conditions. The cathode is identified by the marked bar on the SOT-23 package.
This page synthesizes distributor pricing, drop-in alternatives from cross-reference data, and practical design notes that go beyond the manufacturer datasheet to accelerate your component selection.
ドロップイン代替品: BZX84B10-7-F — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
BZX84B10-13-F
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
BZX84B10Q-7-F
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
BZX84-B10,215
✅ ドロップイン📋 参考代替品（カタログ未掲載）
BZX84-A10,215
✅ ドロップイン📋 参考代替品（カタログ未掲載）
BZX84C10LT1G
✅ ドロップイン📋 参考代替品（カタログ未掲載）
BZX84B10-7-F 最大定格＆電気的特性
| Diode Type | Zener (single) |
| Nominal Zener Voltage (VZ) | 10 V |
| Zener Voltage Tolerance | ±2% (BZX84B series) |
| Test Current (IZT) | 5 mA |
| Maximum Power Dissipation (Pd) | 350 mW |
| パッケージ | SOT-23-3 |
| 実装タイプ | Surface Mount |
| 動作温度範囲 | -65 °C to +150 °C (per datasheet family) |
| Reel Size | 7-inch reel (-7 suffix) |
| AEC-Q101 Qualified | Yes |
| RoHS ステータス | Compliant (lead-free) |
| Halogen-Free / Antimony-Free | Yes ("Green" Device) |
BZX84B10-7-F ピン構成
| ピン 1 | Anode — Anode terminal (connected to lower potential in reverse-biased Zener operation) |
| ピン 2 | Cathode — Cathode terminal (marked with bar on package; connected to higher potential in reverse-biased Zener operation) |
| ピン 3 | Anode — Anode return (internally connected to pin 1) |
主な用途
BZX84B10-7-F の用途: 6 件s: Voltage Reference for ADC/DAC Circuits, Overvoltage Protection / Transient Clamping, Switch-Mode Power Supply Feedback Network, Automotive ECU Sensor Biasing, Portable and Battery-Powered Equipment, Test and Measurement Instrumentation.
Voltage Reference for ADC/DAC Circuits
The BZX84B10-7-F provides a stable 10 V reference rail for precision ADC and DAC analog front-ends. With ±2% B-grade tolerance and a 5 mA test current, it delivers sufficient accuracy for 12-bit and lower-resolution converters without external trimming. Its 350 mW power dissipation comfortably handles the 5-20 mA bias currents typical of successive-approximation ADCs, while the AEC-Q101 qualification allows deployment in automotive sensor signal chains. Compared to series reference ICs, the Zener-based reference is lower cost and lower noise for moderate-precision applications such as motor control feedback loops and battery management current sensing. Place a 10 kΩ series resistor from a 12-15 V supply, with a 0.1 µF decoupling capacitor across the diode to filter wideband noise and ensure clean reference voltage under dynamic load conditions.
おすすめ
Overvoltage Protection / Transient Clamping
The BZX84B10-7-F clamps transients on signal lines, power rails, and I/O ports at 10 V, protecting downstream MOSFETs, op-amps, and microcontroller pins from ESD-induced overvoltage. Its low dynamic impedance in breakdown ensures the clamp voltage remains close to 10 V even at peak surge currents, while the SOT-23 footprint allows dense placement near connector pins or sensitive ICs. The AEC-Q101 qualification makes it suitable for automotive load-dump and inductive kick protection. For higher-energy transients, multiple Zeners in parallel or a dedicated TVS diode should be evaluated. Design tip: keep the PCB trace between the protected line and the Zener under 5 mm to minimize parasitic inductance that can let voltage overshoot exceed the device rating during sub-microsecond events.
おすすめ
Switch-Mode Power Supply Feedback Network
In isolated or non-isolated SMPS topologies, the BZX84B10-7-F sets a stable 10 V reference for the TL431-equivalent feedback loop or for optocoupler LED biasing. Its ±2% tolerance is sufficient for many 5-15% output regulation designs, replacing more expensive bandgap references in cost-sensitive consumer adapters, LED drivers, and appliance power supplies. The SOT-23 package enables tight placement next to the PWM controller, minimizing ground-bounce and EMI pickup. Calculate series resistor to keep Zener current between 1-10 mA across the input voltage range: for a 12 V supply, a 200 Ω resistor provides 10 mA at full VIN. Add a small RC filter to slow the feedback path and prevent loop instability at high switching frequencies.
おすすめ
Automotive ECU Sensor Biasing
The BZX84B10-7-F provides a stable 10 V bias rail for automotive sensors such as throttle position, MAP, and oil-pressure transducers. The AEC-Q101 qualification ensures it survives the temperature, vibration, and humidity profiles of under-hood and chassis-mounted ECUs, while the ±2% tolerance guarantees repeatable sensor calibration across the vehicle fleet. Its 350 mW rating supports bias currents of 10-30 mA typical of ratiometric sensor interfaces, and the SOT-23 footprint minimizes PCB area in densely packed ECU modules. Place a 100 nF X7R bypass capacitor directly across the diode to suppress ignition-spark noise that can couple into the bias network and corrupt ADC readings.
おすすめ
Portable and Battery-Powered Equipment
The BZX84B10-7-F delivers low-current 10 V rails in portable devices such as handheld multimeters, portable medical monitors, and IoT sensor nodes powered from 2-3 cell battery stacks. Its low quiescent current draw in reverse leakage keeps standby drain minimal, extending battery life between recharge cycles. The compact SOT-23 footprint is essential for space-constrained wearables and pocket instruments. For 3 V coin-cell applications, a step-up converter combined with this Zener provides a clean post-regulation rail. Operating temperature range of -65 °C to +150 °C per the datasheet family ensures reliable operation across consumer and industrial portable equipment environments.
おすすめ
Test and Measurement Instrumentation
Bench-top multimeters, oscilloscopes, signal generators, and laboratory power supplies use the BZX84B10-7-F to generate internal 10 V reference rails for calibration constants, ADC full-scale references, and DMM measurement ranges. Its ±2% tolerance is sufficient for many commercial test instruments, and the AEC-Q101 stress-tested silicon provides long-term stability required for factory-calibrated equipment. The SOT-23 package allows dense placement on instrument mainboards. For higher-precision 6.5-digit DMMs requiring better than 0.1% reference accuracy, consider a dedicated series reference IC instead of a Zener-based reference.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: BZX84B10-7-F — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | BZX84B10-13-F | BZX84B10Q-7-F | BZX84-B10,215 | BZX84-A10,215 | BZX84C10LT1G |
|---|---|---|---|---|---|---|
| Package | SOT-23-3 | SOT-23-3 (same) | SOT-23-3 (same) | SOT-23 (TO-236AB) - same | SOT-23 (TO-236AB) - same | SOT-23-3 (same) |
| Brand | Diodes Incorporated | Diodes Incorporated (same) | Diodes Incorporated (same) | Nexperia | Nexperia | onsemi |
| Nominal Zener Voltage | 10 V | 10 V | 10 V | 10 V | 10 V | 10 V |
| Voltage Tolerance | ±2% (B-grade) | ±2% (B-grade) | ±2% (B-grade) | ±2% (B-grade) | ±1% (A-grade, tighter) | ±5% (C-grade, wider) |
| Power Dissipation | 350 mW | 350 mW | 350 mW | 250 mW (-29%) | 250 mW (-29%) | 225 mW (-36%) |
| Test Current | 5 mA | 5 mA | 5 mA | 5 mA | 5 mA | 5 mA |
| RoHS / Lead-Free | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes | Yes / Yes |
主な差別化要因
- AEC-Q101 automotive qualification with full BZX84B family datasheet coverage （vs BZX84C10LT1G (onsemi))
- Higher 350 mW power rating versus Nexperia's 250 mW BZX84-B10 （vs BZX84-B10,215 (Nexperia))
- Tight ±2% B-grade tolerance for precision reference applications （vs BZX84C10LT1G (onsemi C-grade))
設計ノート
Estimated: At a Zener voltage of 10 V and a continuous current of 25 mA, the BZX84B10-7-F dissipates 250 mW (P = VZ × IZ), which is 71% of the 350 mW absolute maximum. On a standard FR-4 PCB with the SOT-23 mounted on a minimal copper pad, the junction-to-ambient thermal resistance (θJA) is approximately 357 °C/W, yielding a junction temperature rise of 89 °C above a 25 °C ambient. For continuous operation above 200 mW dissipation, expand the copper pad area or add thermal vias to keep junction temperature below 150 °C maximum rating.
Mount the BZX84B10-7-F on a land pattern matching the standard SOT-23 footprint with a copper pad of at least 5 mm² under the cathode terminal to aid heat spreading. Place a 0.1 µF X7R bypass capacitor within 3 mm of the diode when used as a voltage reference or clamp, and route the series resistor with a trace width that handles the worst-case continuous current. Keep the diode's body clear of tall adjacent components that could shadow solder joints during reflow.
Do not operate the BZX84B10-7-F forward-biased with currents above 100 mA, as the SOT-23 package cannot dissipate the resulting heat. When used as a shunt regulator, ensure the source impedance is low enough to guarantee the Zener current never falls below the knee (typically 1 mA for this series), otherwise regulation is lost and the output voltage rises toward the supply rail. Avoid placing the diode near high dv/dt switching nodes without proper shielding, as the junction capacitance (~100 pF at 0 V bias) can inject noise into sensitive analog circuits.
コンプライアンス情報
AEC-Q101 qualified per Diodes Incorporated product page and Mouser listing. RoHS compliant with lead-free terminals. Halogen-free and antimony-free 'Green Device' construction. Fully RoHS Directive 2011/65/EU compliant.
