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Nexperia USA Inc. BZX84J-B24,115
- Part No.:
- BZX84J-B24,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-B24,115.pdf
- Description:
- DIODE ZENER 24V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:273,821
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Product details
Overview
BZX84J-B24,115 from Nexperia is a 24 V ±2 % Zener voltage regulator diode in SOD323F (SC-90) package, rated for 550 mW total power dissipation, 16.8 V to 25.6 V working voltage range at IZ = 5 mA, and AEC-Q101 qualified for automotive use. It provides precise voltage reference and overvoltage clamping in low-power supply rails and sensor biasing circuits.
For engineers reviewing the BZX84J-B24,115 datasheet, BZX84J-B24,115 pinout, BZX84J-B24,115 application, or BZX84J-B24,115 equivalent, key selection criteria include Zener voltage tolerance (±2 %), differential resistance (≤80 Ω at IZ = 5 mA), non-repetitive peak reverse current (1.25 A), thermal resistance (230 K/W), and automotive qualification status.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its 24 V nominal Zener voltage is specified at 5 mA test current with ±2 % tolerance, and exhibits a positive temperature coefficient of +18.4 mV/K at that current.
The device features low differential resistance (≤80 Ω), enabling tight regulation under dynamic load changes, and supports pulsed surge handling up to 40 W (100 µs square wave, Tj = 25 °C prior to surge) for transient protection in automotive ECUs and industrial sensors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.5 V to 24.5 V at IZ = 5 mA - defines precision voltage reference window for regulation or clamping |
| Tolerance | ±2 % - ensures tight binning for critical biasing and feedback applications |
| Differential Resistance (rdiff) | ≤80 Ω at IZ = 5 mA - minimizes output voltage variation under load current shifts |
| Total Power Dissipation (Ptot) | 550 mW at Tamb ≤ 25 °C - sets continuous DC power limit on FR4 PCB with 1 cm² cathode pad |
| Non-repetitive Peak Reverse Current (IZSM) | 1.25 A at tp = 100 µs - enables short-duration surge suppression without failure |
| Thermal Resistance (Rth(j-a)) | 230 K/W - determines junction-to-ambient temperature rise under steady-state operation |
| Reverse Current (IR) | ≤0.05 µA at VR = 17.3 V - guarantees low leakage below knee voltage in standby mode |
Pinout & Package
SOD323F (SC-90) surface-mount plastic package: 2-pin, ultra-small outline (2.7 mm × 1.6 mm × 0.95 mm), flat lead, cathode-marked with bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse current during Zener conduction |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-biased path for voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| Low differential resistance | ≤80 Ω at 5 mA ensures <120 mV output shift for ±1 mA load change - critical for precision references |
| Wide operating voltage range | 24 V nominal with ±2 % tolerance covers core 12 V/24 V system rail monitoring and clamp thresholds |
| Pulsed surge capability | 40 W non-repetitive peak reverse power (100 µs) supports ISO 7637-2 pulse 1/2a/2b transient immunity |
| Small footprint | SOD323F package enables high-density placement in space-constrained modules like ADAS camera ECUs and body control units |
Applications
| Automotive Sensor Biasing | Industrial 24 V Rail Clamp |
|---|---|
Use Scenario: Providing stable bias voltage to analog pressure or temperature sensors in engine control modules. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, maintaining constant 24 V supply despite battery fluctuations between 9 V–16 V. Use Value: ±2 % tolerance and low rdiff ensure sensor output accuracy remains within 0.5 % full-scale error across temperature. |
Use Scenario: Clamping transients on 24 V industrial PLC input channels exposed to inductive switching noise. IC Role / Device Role / Timing Role: Shunt protector limiting voltage spikes to ≤25.6 V during fast-rising surges (e.g., relay coil de-energization). Use Value: 1.25 A IZSM rating handles 100 µs pulses without degradation, meeting IEC 61000-4-4 Level 3 immunity. |
| USB-C PD Feedback Reference | Medical Device Power Monitor |
Use Scenario: Setting precise 24 V threshold in USB-C Power Delivery sink controller feedback loop. IC Role / Device Role / Timing Role: Zener diode supplies accurate reference to comparator or ADC input for overvoltage detection. Use Value: +18.4 mV/K temperature coefficient allows predictable drift compensation in firmware calibration routines. |
Use Scenario: Monitoring auxiliary 24 V supply integrity in portable ultrasound battery packs. IC Role / Device Role / Timing Role: Low-leakage (≤0.05 µA) Zener enables microamp-level standby current budget while detecting undervoltage faults. Use Value: AEC-Q101 qualification assures long-term stability in medical-grade thermal cycling environments (−40 °C to +85 °C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24,115 | ±5 % tolerance, higher rdiff (≤100 Ω), same package and Ptot | Acceptable where cost sensitivity outweighs precision requirements | Select for non-critical biasing where ±5 % VZ meets system margin |
| MMSZ4702T1G | 24 V ±5 %, SOD-123 package (larger), 500 mW Ptot, no AEC-Q101 | Limited to commercial-grade industrial use; not automotive qualified | Choose only if board layout permits larger footprint and automotive compliance is unnecessary |
Compared with BZX84J-B24,115, the BZX84-C24,115 trades tighter voltage control for lower cost, while MMSZ4702T1G sacrifices automotive qualification and thermal performance for legacy compatibility - making the J-series the sole choice for AEC-Q101–mandated 24 V reference designs.
Availability
BZX84J-B24,115 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial 24 V rail clamping, and medical device power monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZX84J-B24,115 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 expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX84J series belongs to Nexperia's AEC-Q101–qualified Zener diode portfolio, engineered specifically for robust voltage reference and transient suppression in harsh automotive environments.
FAQ
What is the maximum continuous forward current for BZX84J-B24,115?
The absolute maximum forward current is 250 mA per limiting values table. However, forward conduction is not its intended operating mode; it is designed for reverse-biased Zener regulation. Continuous forward bias above 100 mA risks exceeding thermal limits due to VF ≈ 1.1 V at that current, leading to excessive self-heating in the SOD323F package.
Can BZX84J-B24,115 be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but even within the same batch, slight VZ mismatches cause current hogging. Parallel connection leads to thermal runaway and premature failure. For higher power, use a single higher-rated Zener or an active shunt regulator instead.
Is the 24 V Zener voltage specified at DC or pulsed test conditions?
VZ = 23.5 V to 24.5 V is specified at DC test condition: IZ = 5 mA, Tj = 25 °C. Pulse testing (e.g., 100 µs) is reserved for surge parameters like IZSM; regulation performance must be evaluated under steady-state DC bias per the characteristics table.
How does the AEC-Q101 qualification impact solder reflow profile requirements?
AEC-Q101 qualification confirms robustness through JEDEC J-STD-020 moisture sensitivity level (MSL) 1 rating and validated reflow survivability. The device requires standard Pb-free reflow per Figure 12 footprint, with peak temperature ≤260 °C and time above liquidus ≤60 s - no special profile deviations are needed beyond IPC/JEDEC guidelines.
BZX84J-B24,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
BZX84J-B24,115 FAQ
1.How can I place an order for BZX84J-B24,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-B24,115 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 BZX84J-B24,115 reliable?
The price and inventory of BZX84J-B24,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-B24,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-B24,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-B24,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-B24,115?
BZX84J-B24,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-B24,115 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 BZX84J-B24,115?
For technical support, including BZX84J-B24,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-B24,115 requirements.
6.How does Aetrix verify that BZX84J-B24,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-B24,115 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 BZX84J-B24,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-B24,115?
All BZX84J-B24,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-B24,115, 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 BZX84J-B24,115 part is unused and in its original packaging.
Return procedure for BZX84J-B24,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-B24,115 Tags
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