My Inquiry
My Account
Nexperia USA Inc. BZX384-B75-QF
- Part No.:
- BZX384-B75-QF
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B75-QF.pdf
- Description:
- DIODE ZENER 75V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,653
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX384-B75-QF from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 75 V nominal breakdown voltage at IZ = 2 mA, with 300 mW total power dissipation and AEC-Q101 qualification for automotive use. It provides stable reference voltage in low-power supply regulation and overvoltage protection circuits.
For engineers reviewing the BZX384-B75-QF datasheet, BZX384-B75-QF pinout, BZX384-B75-QF application, or BZX384-B75-QF equivalent, key selection factors include its 75 V Zener voltage tolerance (±2 %), non-repetitive peak reverse power capability (40 W), thermal resistance (110 K/W junction-to-solder point), and automotive-grade reliability per AEC-Q101.
Technical Context
This device operates as a two-terminal silicon Zener diode, conducting in reverse bias above its specified breakdown voltage to clamp or regulate voltage. Its differential resistance of 500 Ω at IZ = 2 mA and temperature coefficient of +0.05 mV/K ensure predictable voltage stability across operating current and temperature ranges.
Designed for surface-mount applications on FR4 PCBs with standard SOD323 footprint, it supports reflow and wave soldering per JEDEC standards. The cathode-marked SOD323 package enables compact placement in space-constrained automotive and industrial control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 75 V nominal at IZ = 2 mA; ±2 % tolerance ensures precise voltage clamping in reference circuits. |
| Total Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C on FR4 PCB; defines maximum continuous DC power handling in ambient conditions. |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W for tp = 100 μs; enables transient surge suppression without failure. |
| Differential Resistance (rdif) | 500 Ω max at IZ = 2 mA; determines voltage regulation linearity under varying load current. |
| Reverse Current (IR) | 255 μA max at VR = 57 V; specifies leakage level below breakdown, critical for low-power standby operation. |
| Junction Temperature (Tj) | 150 °C maximum; sets upper thermal limit for reliable long-term operation in under-hood automotive environments. |
| AEC-Q101 Qualified | Qualified per Automotive Electronics Council stress test standard; validated for automotive power management and sensor interface applications. |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads, 2.7 mm × 1.6 mm body size, 0.45 mm lead pitch, and cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs; marked by bar on package top. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation current flow. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q101 qualified for engine control units, body electronics, and ADAS power rails requiring high reliability. |
| Precision voltage tolerance | ±2 % tolerance at 75 V enables tighter system-level voltage margining than ±5 % variants in safety-critical sensing. |
| Low thermal resistance | 110 K/W junction-to-solder point allows efficient heat transfer to PCB copper, supporting sustained 300 mW operation. |
| Transient surge robustness | 40 W non-repetitive peak reverse power rating handles ESD and load-dump transients common in 12 V/24 V vehicle systems. |
| Compact SMD footprint | SOD323 package occupies <1.5 mm² board area, enabling dense placement in multi-rail power supervisors and battery monitors. |
Applications
| Engine Control Unit (ECU) Reference | Automotive Cabin Sensor Supply |
|---|---|
Use Scenario: Providing stable 75 V reference for analog-to-digital conversion of high-voltage battery monitoring signals in 48 V mild-hybrid ECUs. IC Role / Device Role / Timing Role: Zener voltage reference diode establishing precision threshold for overvoltage detection circuitry. Use Value: ±2 % tolerance ensures accurate voltage scaling within ADC input range, reducing calibration drift over temperature and lifetime. |
Use Scenario: Regulating auxiliary 75 V rail powering MEMS pressure and humidity sensors in HVAC control modules. IC Role / Device Role / Timing Role: Low-power shunt regulator maintaining constant bias voltage despite input ripple from switched-mode converters. Use Value: 300 mW dissipation and 150 °C junction rating support continuous operation in hot under-dash environments without derating. |
| Industrial PLC Input Protection | LED Driver Overvoltage Clamp |
Use Scenario: Clamping transient surges on 75 V analog input channels of programmable logic controllers exposed to field wiring noise. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing short-duration spikes before they reach sensitive signal-conditioning ICs. Use Value: 40 W non-repetitive peak power rating withstands IEC 61000-4-4 fast transient bursts without degradation. |
Use Scenario: Protecting constant-current LED driver ICs from output overvoltage during open-circuit fault conditions in architectural lighting systems. IC Role / Device Role / Timing Role: Shunt clamp activated when output exceeds 75 V, diverting excess current to prevent driver IC latch-up. Use Value: 500 Ω differential resistance ensures minimal voltage overshoot during clamping, preserving LED string integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-C75-Q | ±5 % tolerance (vs. ±2 %); higher max reverse current (255 μA vs. 255 μA same); identical 75 V nominal rating. | Acceptable where system-level voltage margin accommodates wider tolerance; lower cost for non-critical regulation. | Select when absolute voltage accuracy is secondary to cost and availability in high-volume consumer modules. |
| MMSZ5265B-TP | 75 V nominal, ±5 % tolerance, SOD-123 package, 500 mW Ptot, not AEC-Q101 qualified. | Limited to industrial/commercial use; lacks automotive qualification and has larger footprint (3.7 mm × 1.6 mm). | Choose only for non-automotive designs where higher power dissipation is required and qualification is unnecessary. |
Compared with BZX384-C75-Q, the BZX384-B75-QF offers tighter voltage control essential for calibrated measurement systems; versus MMSZ5265B-TP, it delivers automotive reliability and smaller board area at the expense of slightly lower power rating.
Availability
BZX384-B75-QF is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interfaces, and LED driver protection requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX384-B75-QF 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 specializing in high-performance, high-reliability discrete and logic devices, with leadership in automotive-qualified components.
The BZX384-Q series belongs to Nexperia's automotive Zener diode product line, engineered specifically for precision voltage reference and transient protection in harsh-environment vehicle subsystems.
FAQ
What is the maximum reverse voltage this diode can sustain before breakdown?
The BZX384-B75-QF has a nominal Zener voltage of 75 V at IZ = 2 mA, with a guaranteed minimum breakdown voltage of 73.5 V and maximum of 76.5 V per ±2 % tolerance. It is not rated for continuous operation above its specified VZ; applied reverse voltage beyond this range initiates controlled conduction to regulate or clamp.
Can this diode be used in parallel for higher power handling?
No - Zener diodes like the BZX384-B75-QF should not be paralleled due to mismatched breakdown voltages and thermal runaway risk. Their differential resistance (500 Ω) and positive temperature coefficient above ~5 V cause current hogging in one device. Use a single higher-power Zener or active regulation instead.
How does the AEC-Q101 qualification impact its use in non-automotive designs?
AEC-Q101 qualification confirms extended reliability testing including temperature cycling, humidity bias, and mechanical shock - making the BZX384-B75-QF suitable for any demanding industrial or medical application where long-term stability and field failure avoidance are critical, even outside automotive contexts.
What is the significance of the 'QF' suffix in the part number?
The 'QF' suffix denotes Nexperia's automotive-grade variant of the BZX384-B75-Q series, indicating full AEC-Q101 qualification, traceable lot documentation, and compliance with PPAP requirements - distinguishing it from commercial-grade 'Q' versions intended for non-automotive use.
BZX384-B75-QF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384-Q
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 75 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 255 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 52.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZX384-B75-QF FAQ
1.How can I place an order for BZX384-B75-QF through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B75-QF 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-B75-QF reliable?
The price and inventory of BZX384-B75-QF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B75-QF is usually 5 days.
3.What payment methods are accepted for BZX384-B75-QF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B75-QF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B75-QF?
BZX384-B75-QF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B75-QF 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-B75-QF?
For technical support, including BZX384-B75-QF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B75-QF requirements.
6.How does Aetrix verify that BZX384-B75-QF is sourced from the original manufacturer or authorized distributors?
All BZX384-B75-QF 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-B75-QF meets industry standards.
7.What is the process for return or replacement of BZX384-B75-QF?
All BZX384-B75-QF units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B75-QF, 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-B75-QF part is unused and in its original packaging.
Return procedure for BZX384-B75-QF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B75-QF 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…
