My Inquiry
My Account
Nexperia USA Inc. BZX384-B9V1,115
- Part No.:
- BZX384-B9V1,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B9V1,115.pdf
- Description:
- DIODE ZENER 9.1V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:83,757
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX384-B9V1,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 9.1 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 150 °C maximum junction temperature. It provides stable reference voltage in low-power linear regulators, overvoltage protection circuits, and voltage-clamping applications in consumer and industrial electronics.
For engineers reviewing the BZX384-B9V1,115 datasheet, BZX384-B9V1,115 pinout, BZX384-B9V1,115 application, or BZX384-B9V1,115 equivalent, key selection criteria include its 9.1 V Zener voltage tolerance (±2 %), 100 Ω typical differential resistance at 5 mA, 0.5 μA reverse current at 7.3 V, and thermal resistance of 415 K/W in free air - all critical for precision biasing and transient suppression design.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable reference voltage across its terminals under varying load and temperature conditions. Its 9.1 V nominal Zener voltage is specified at IZ = 5 mA with a temperature coefficient of +3.8 mV/K, indicating positive drift with rising temperature.
The device features non-repetitive peak reverse power dissipation up to 40 W for 100 μs pulses and supports forward conduction up to 250 mA. Its SOD323 package enables compact PCB layout while maintaining thermal performance via 110 K/W junction-to-solder-point resistance when mounted on standard FR4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V nominal at IZ = 5 mA; ±2 % tolerance ensures predictable clamping level in reference circuits |
| Differential Resistance (rdif) | 100 Ω max at IZ = 5 mA; determines output impedance and regulation sensitivity to current variation |
| Reverse Current (IR) | 0.5 μA max at VR = 7.3 V; defines leakage-induced error in high-impedance bias networks |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB; sets continuous DC power limit for thermal design |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs; enables transient surge suppression without device failure |
| Junction Temperature (Tj) | −65 °C to +150 °C operating range; supports industrial ambient environments and reflow soldering |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; relevant for polarity-check or series-forward protection configurations |
Pinout & Package
The BZX384-B9V1,115 is housed in a surface-mount SOD323 (SC-76) plastic package with cathode marked by a bar on the body. The package measures 1.8 mm × 1.35 mm × 0.95 mm and uses standard reflow footprint per Nexperia's recommended land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to higher potential in reverse-bias regulation; marking bar identifies this terminal |
| 2 (A) | Anode | Connected to lower potential or ground; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMD package | SOD323 footprint enables high-density PCB layouts with minimal board area usage |
| ±2 % Zener voltage tolerance | Enables tighter regulation accuracy than ±5 % variants, suitable for mid-precision references |
| 150 °C maximum junction temperature | Supports reliable operation in thermally constrained enclosures and industrial ambient conditions |
| 415 K/W junction-to-ambient thermal resistance | Defines worst-case steady-state temperature rise under full 300 mW dissipation in still air |
| 100 μs surge capability | Withstands short-duration transients up to 40 W without degradation, enhancing system robustness |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Providing stable 9.1 V reference for adjustable linear regulators (e.g., LM317 feedback network) in battery-powered instrumentation. IC Role / Device Role / Timing Role: Zener diode acts as precision voltage reference node, setting output voltage via resistor divider ratio. Use Value: ±2 % tolerance ensures output voltage deviation remains within ±0.18 V, meeting tight calibration requirements. |
Use Scenario: Clamping input voltage to protect downstream 10 V-rated ADC inputs from ESD or supply rail overshoot. IC Role / Device Role / Timing Role: Shunts excess current above 9.1 V to ground, limiting voltage excursion during fast transients. Use Value: 40 W non-repetitive peak power rating absorbs 100 μs surges up to 4.4 A without failure. |
| Signal Level Shifting | Temperature-Stable Biasing |
|
Use Scenario: Shifting logic-level signals between 3.3 V and 5 V domains using Zener-based level translator with pull-up resistors. IC Role / Device Role / Timing Role: Diode conducts only when signal exceeds 9.1 V, enabling bidirectional voltage translation with minimal propagation delay. Use Value: 100 Ω differential resistance maintains signal integrity under 1 mA load, minimizing level shift error. |
Use Scenario: Generating temperature-compensated bias current for op-amp input stages in wide-temperature-range sensor interfaces. IC Role / Device Role / Timing Role: Zener voltage drift (+3.8 mV/K) offsets transistor VBE drift, stabilizing quiescent current. Use Value: Positive temperature coefficient matches complementary semiconductor drift characteristics for net zero TC design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5240BS-7-F | 9.1 V, ±5 % tolerance, SOD-123 package, 350 mW Ptot | Higher power rating but looser tolerance; larger footprint increases board area | Select when higher surge margin is needed and ±5 % regulation accuracy is acceptable |
| Vishay BZX384-C9V1 | 9.1 V, ±5 % tolerance, same SOD323 package, identical 300 mW rating | Reduced regulation precision; lower cost for non-critical biasing functions | Select for cost-sensitive designs where ±5 % voltage variation is permissible |
Compared with BZX384-B9V1,115, MMBZ5240BS-7-F offers greater power headroom but sacrifices accuracy and board space efficiency, while BZX384-C9V1 retains identical form factor and thermal behavior at the expense of regulation stability - making the B-series optimal for balanced precision, size, and reliability.
Availability
BZX384-B9V1,115 is available at Aetrix Electronics and suitable for voltage reference generation, overvoltage protection, and signal level shifting requiring stable component supply across consumer, industrial, and test equipment production.
Supply support for BZX384-B9V1,115 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 manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The BZX384 series is part of Nexperia's precision Zener diode portfolio designed specifically for low-power voltage regulation and clamping in space-constrained, thermally demanding applications.
FAQ
What is the maximum continuous reverse current the BZX384-B9V1,115 can sustain at 9.1 V?
The BZX384-B9V1,115 is not rated for continuous reverse current at its Zener voltage - it operates in controlled breakdown at specified test current (5 mA). Sustained reverse current must be limited by external series resistance to ensure power dissipation stays ≤300 mW and junction temperature remains ≤150 °C. Exceeding these limits causes thermal runaway.
Can BZX384-B9V1,115 be used in place of a 9.1 V Zener with ±1 % tolerance?
No - BZX384-B9V1,115 has ±2 % tolerance (8.92 V to 9.28 V), whereas ±1 % variants (e.g., BZX384-A9V1) specify 9.00 V to 9.20 V. Substituting introduces up to 0.08 V additional voltage uncertainty, which may violate regulation accuracy requirements in precision analog circuits.
How does the 415 K/W thermal resistance affect PCB layout decisions?
A 415 K/W junction-to-ambient resistance means a 300 mW dissipation raises junction temperature by 124.5 K above ambient. To stay within 150 °C Tj, ambient must remain below 25.5 °C unless copper pour, thermal vias, or forced airflow reduce effective Rth(j-a). Layout must follow Nexperia's SOD323 footprint and avoid enclosing the device in thermally insulating material.
Is BZX384-B9V1,115 qualified for automotive applications?
No - per Nexperia's revision history (Rev. 4, Jan 2023), the BZX384 series is explicitly designated as non-automotive qualified. Automotive-grade alternatives require -Q suffix parts (e.g., BZX384-B9V1,115-Q) with AEC-Q200 qualification, extended temperature testing, and enhanced process controls not present in this variant.
BZX384-B9V1,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.1 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-B9V1,115 FAQ
1.How can I place an order for BZX384-B9V1,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B9V1,115 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 BZX384-B9V1,115 reliable?
The price and inventory of BZX384-B9V1,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B9V1,115 is usually 5 days.
3.What payment methods are accepted for BZX384-B9V1,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B9V1,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B9V1,115?
BZX384-B9V1,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B9V1,115 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 BZX384-B9V1,115?
For technical support, including BZX384-B9V1,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B9V1,115 requirements.
6.How does Aetrix verify that BZX384-B9V1,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-B9V1,115 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 BZX384-B9V1,115 meets industry standards.
7.What is the process for return or replacement of BZX384-B9V1,115?
All BZX384-B9V1,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B9V1,115, 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 BZX384-B9V1,115 part is unused and in its original packaging.
Return procedure for BZX384-B9V1,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B9V1,115 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
