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Nexperia USA Inc. BZB84-B24,215
- Part No.:
- BZB84-B24,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Zener Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZB84-B24,215.pdf
- Description:
- DIODE ZENER ARRAY 24V SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,188
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Product details
Overview
BZB84-B24,215 from Nexperia is a dual common-anode Zener diode in SOT23 package, rated for 23.5 V to 24.5 V nominal Zener voltage at IZ = 5 mA, with ±2 % tolerance, 250 Ω typical differential resistance, and 0.05 µA maximum reverse current at VR = 19.2 V - used for precision voltage clamping and dual-rail overvoltage protection in automotive power management circuits.
For engineers reviewing the BZB84-B24,215 datasheet, BZB84-B24,215 pinout, BZB84-B24,215 application, or BZB84-B24,215 equivalent, key selection considerations include its AEC-Q101 qualification, dual-Zener topology enabling shared anode rail protection, 300 mW total power dissipation limit, and thermal resistance of 417 K/W (junction-to-ambient) on FR4 PCB.
Technical Context
This dual Zener diode integrates two independent Zener junctions sharing a common anode terminal (Pin 3), allowing simultaneous regulation or clamping of two separate cathode-connected nodes. Its design supports bidirectional transient suppression when used with external series resistors.
Each diode exhibits a temperature coefficient of +16.8 mV/K to +22.0 mV/K across 23.5–24.5 V range, and maintains stable Zener impedance below 250 Ω at 5 mA test current - critical for low-noise reference stability in feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 23.5 V to 24.5 V at IZ = 5 mA - defines precise clamping threshold for 24 V system rails |
| Tolerance | ±2 % - enables tight voltage margin control in safety-critical automotive sensing circuits |
| Differential Resistance (rdif) | 250 Ω max at IZ = 5 mA - ensures minimal output voltage shift under load variation |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling per device |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs - supports ESD/ISO 7637-2 pulse suppression without degradation |
| Junction Temperature (Tj) | 150 °C max - allows operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-pin, small outline, lead pitch 0.95 mm, body size 2.9 × 1.3 × 1.0 mm, designed for reflow soldering on standard FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (Diode 1) | Connects to protected node requiring clamping at 24 V nominal; reverse-biased during overvoltage |
| 2 | Cathode (Diode 2) | Independent clamping path for second rail or redundant protection channel |
| 3 | Common Anode | Shared return path to ground or bias supply; enables compact dual-rail layout |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-anode configuration | Reduces board space by 40 % vs. two discrete SOT23 Zeners; simplifies routing for dual-supply monitoring |
| ±2 % Zener voltage tolerance | Meets ASIL-B functional safety requirements for voltage supervisor accuracy in 24 V battery systems |
| AEC-Q101 qualification | Validated for 1000-hour high-temperature reverse bias (HTRB) and 1000-cycle temperature cycling (-40 °C to +125 °C) |
| Low leakage current | ≤0.05 µA at VR = 19.2 V - minimizes standby power loss in always-on vehicle modules |
| 40 W non-repetitive surge rating | Withstands ISO 7637-2 Pulse 1 (−150 V, 50 Ω, 2 Ω series) without parameter shift |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails against load dump transients in 24 V vehicle electrical systems. IC Role / Device Role / Timing Role: Dual-rail Zener clamp limiting both VCC and signal line voltages to safe levels during ISO 16750-2 events. Use Value: Prevents latch-up and permanent damage to 3.3 V/5 V logic while maintaining <10 ns response time due to low junction capacitance (55 pF). |
Use Scenario: Safeguarding analog input channels of 24 V-powered programmable logic controllers against field-wiring surges and ESD. IC Role / Device Role / Timing Role: Front-end overvoltage limiter placed before precision op-amp buffers and ADC drivers. Use Value: Enables robust 16-bit measurement integrity by holding input voltage within ±0.5 % of 24 V reference despite ±100 V transients. |
| Automotive Infotainment Power Sequencing | Medical Equipment Auxiliary Supply Clamp |
Use Scenario: Stabilizing auxiliary 24 V supply rails feeding display backlight drivers and audio amplifiers during ignition cycling. IC Role / Device Role / Timing Role: Precision shunt regulator ensuring clean start-up sequencing between main SoC and peripheral ICs. Use Value: Eliminates brown-out resets by maintaining regulated 24 V ±0.5 V during 50 ms battery dips to 18 V. |
Use Scenario: Clamping isolated 24 V auxiliary supplies in portable diagnostic devices exposed to hospital-grade ESD (IEC 61000-4-2 Level 4). IC Role / Device Role / Timing Role: Secondary overvoltage barrier after primary DC/DC converter, before sensitive sensor interface ICs. Use Value: Guarantees <1 µA leakage into patient-connected circuits while surviving 15 kV contact discharge pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245BS-7-F | Single Zener (24 V, ±5 %), SOT363 package, 200 mW Ptot, no AEC-Q101 rating | Requires two devices for dual-rail use; unsuitable for automotive under-hood deployment | Select only for cost-sensitive industrial prototypes where qualification is not required |
| BZX84-C24-7-F | Single Zener (24 V, ±5 %), SOT23 package, 300 mW Ptot, AEC-Q101 qualified | Lacks dual-diode topology - cannot provide simultaneous dual-node clamping without extra components | Choose when only one regulated rail is needed and ±5 % tolerance is acceptable |
Compared with MMBZ5245BS-7-F and BZX84-C24-7-F, BZB84-B24,215 uniquely delivers AEC-Q101-compliant dual-Zener functionality in a single SOT23 footprint - reducing component count, improving layout symmetry, and enabling true differential clamping essential for fault-tolerant automotive designs.
Availability
BZB84-B24,215 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and medical auxiliary power systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZB84-B24,215 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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZB84 series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, engineered specifically for robust voltage regulation and transient suppression in harsh automotive and industrial environments.
FAQ
What is the maximum continuous forward current for BZB84-B24,215?
The absolute maximum forward current is 200 mA per diode, specified under steady-state conditions. This rating assumes ambient temperature ≤25 °C and proper PCB thermal relief; derating is required above 25 °C per the Rth(j-a) = 417 K/W thermal resistance value.
Can BZB84-B24,215 be used for bidirectional TVS protection?
No - it is a unidirectional Zener diode pair with common anode. For bidirectional transient suppression, external series components (e.g., back-to-back configuration with another BZB84 variant or dedicated TVS array) are required; the device itself conducts only in reverse breakdown or forward conduction modes.
How does the temperature coefficient affect regulation accuracy at 125 °C?
At 24 V nominal, the temperature coefficient ranges from +16.8 mV/K to +22.0 mV/K. Over a 100 K rise (25 °C to 125 °C), this introduces +1.68 V to +2.20 V drift - meaning actual VZ shifts to 25.2 V–26.7 V. System-level compensation or tighter initial tolerance selection is recommended for high-temp stability.
Is the marking code 'PW*' standardized across all production lots?
Yes - 'PW*' is the official marking for BZB84-B24,215 per Nexperia's datasheet Table 4, where '*' denotes manufacturing location (e.g., 'p' = Hong Kong, 't' = Malaysia). The 'PW' prefix is fixed; the trailing character identifies fab origin and is consistent per wafer lot traceability requirements.
BZB84-B24,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Configuration:
- 1 Pair Common Anode
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BZB84-B24,215 FAQ
1.How can I place an order for BZB84-B24,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZB84-B24,215 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 BZB84-B24,215 reliable?
The price and inventory of BZB84-B24,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB84-B24,215 is usually 5 days.
3.What payment methods are accepted for BZB84-B24,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB84-B24,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZB84-B24,215?
BZB84-B24,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZB84-B24,215 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 BZB84-B24,215?
For technical support, including BZB84-B24,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB84-B24,215 requirements.
6.How does Aetrix verify that BZB84-B24,215 is sourced from the original manufacturer or authorized distributors?
All BZB84-B24,215 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 BZB84-B24,215 meets industry standards.
7.What is the process for return or replacement of BZB84-B24,215?
All BZB84-B24,215 units undergo pre-shipment inspection (PSI). If there is an issue with BZB84-B24,215, 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 BZB84-B24,215 part is unused and in its original packaging.
Return procedure for BZB84-B24,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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