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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Zener Diode Arrays

Nexperia USA Inc. BZB784-C13-QX

Name: BZB784-C13-QX
Brand: Nexperia USA Inc.
SKU: BZB784-C13-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZB784-C13-QX

Manufacturer:: Nexperia USA Inc.

Category:: Zener Diode Arrays

Package:: SC-70, SOT-323

Datasheet:: BZB784-C13-QX.pdf

Description:: BZB784-C13-Q/SOT323/SC-70

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BZB784-C13-QX from Nexperia is a dual Zener voltage regulator diode in SOT323 (SC-70) package, configured as two cathodes (K1, K2) sharing a common anode (CA), with nominal working voltage 13 V ±5%, 100 nA reverse leakage at VR = 8 V, and 350 mW total power dissipation - used for precision voltage clamping and ESD protection in automotive sensor interfaces.

For engineers reviewing the BZB784-C13-QX datasheet, BZB784-C13-QX pinout, BZB784-C13-QX application, or BZB784-C13-QX equivalent, this page delivers verified electrical parameters, thermal resistance values, AEC-Q101 qualification status, and dual-diode configuration details essential for automotive-grade circuit protection design.

Technical Context

This dual-Zener device implements two independent 13 V regulation paths sharing one anode terminal, enabling bidirectional clamping across differential or complementary signal lines. Its ±5% V_Z tolerance, 100 nA I_R at 8 V, and low 50–170 Ω dynamic impedance support stable reference and transient suppression in low-power analog front-ends.

Thermal performance is defined for FR4 PCB mounting: R_th(j-a) = 355 K/W (both diodes active), R_th(j-sp) = 140 K/W, and T_j(max) = 150 °C - confirming suitability for under-hood automotive environments where ambient reaches +125 °C with derated power.

Key Specifications

Parameter	Value and Actual Design Meaning
Nominal Zener Voltage	13 V ±5% - defines precise clamping threshold for overvoltage protection in 12 V automotive systems
Reverse Leakage Current	100 nA at VR = 8 V - ensures minimal standby current draw in always-on sensor circuits
Total Power Dissipation	350 mW at Tamb = 25 °C (2 diodes loaded) - sets maximum continuous surge energy handling capability
Forward Voltage	0.9 V at IF = 10 mA - enables low-loss forward conduction during fault conditions
Junction Temperature Limit	150 °C - supports operation in high-temperature engine control modules
Thermal Resistance j-a	355 K/W - quantifies self-heating under full dual-diode load on standard FR4 PCB
AEC-Q101 Qualified	Yes - validated for automotive discrete semiconductor stress testing including HTGB, HTRB, and temperature cycling

Pinout & Package

SOT323 (SC-70) plastic surface-mount package: 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, FR4-compatible footprint per Figure 5.

Pin/Terminal	Circuit Role	Design Meaning
1	K1 (cathode of diode 1)	Connects to protected node requiring 13 V clamping in one polarity
2	K2 (cathode of diode 2)	Connects to same or complementary node for bidirectional 13 V clamping
3	CA (common anode)	Reference/ground connection point shared by both Zener paths - enables compact dual-rail protection

Key Features

Feature	Design Value
Dual 13 V Zener configuration	Enables symmetrical bidirectional voltage clamping without external components
±5% V_Z tolerance	Guarantees tight regulation window for compliance with ISO 7637-2 pulse 1/2b immunity thresholds
AEC-Q101 qualification	Validates reliability for automotive powertrain, body control, and ADAS sensor modules
Low 100 nA reverse leakage	Minimizes quiescent current impact in battery-powered telematics and CAN node receivers
350 mW total dissipation	Supports 40 W non-repetitive peak surge (tp = 100 µs) when used with appropriate series impedance

Applications

Automotive Sensor Signal Conditioning

USB Type-C Port ESD Protection

Use Scenario: Protecting LIN bus transceiver inputs against load dump and ISO 7637-2 transients in door module ECUs.

IC Role / Device Role / Timing Role: Dual-Zener clamp limiting differential voltage between TX/RX lines to ±13 V relative to ground.

Use Value: Prevents latch-up in 3.3 V transceivers while maintaining signal integrity below 1 MHz bandwidth.

Use Scenario: Safeguarding USB-C CC and SBU pins from human-body-model (HBM) ESD events in infotainment head units.

IC Role / Device Role / Timing Role: Low-capacitance (80 pF) bidirectional clamp referenced to system ground.

Use Value: Meets IEC 61000-4-2 Level 4 (±15 kV air/±8 kV contact) without degrading USB 2.0 signal rise time.

Industrial CAN FD Transceiver Interface

Smart Rearview Mirror Power Supply Clamp

Use Scenario: Clamping CAN_H/CAN_L differential voltage during power supply brownout recovery in vehicle gateway modules.

IC Role / Device Role / Timing Role: Common-anode dual Zener providing symmetric rail-to-rail clamping at 13 V.

Use Value: Limits bus voltage excursion to safe range for 5 V CAN FD transceivers during 12 V system instability.

Use Scenario: Stabilizing 13.5 V supply rail feeding OLED display drivers in auto-dimming rearview mirrors.

IC Role / Device Role / Timing Role: Precision 13 V shunt regulator maintaining reference for linear LDO feedback network.

Use Value: Compensates for alternator ripple and battery voltage drift while consuming <1 µA quiescent current.

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
BZX84-C13-Q	Single Zener in SOT23; no dual-cathode topology	Requires two devices and extra routing for bidirectional clamping	Select when space allows discrete placement and cost sensitivity outweighs layout efficiency
PDZ13Q-13	13 V Zener in SOD323; 200 mW P_tot, higher I_R (500 nA)	Limited surge capacity and less stringent leakage for low-duty-cycle protection	Prefer for non-automotive consumer electronics where AEC-Q101 is not required

Compared with BZX84-C13-Q and PDZ13Q-13, the BZB784-C13-QX uniquely integrates dual 13 V regulation paths in one SOT323 footprint with AEC-Q101 validation, enabling compact, automotive-compliant bidirectional clamping without component count increase or thermal compromise.

Availability

BZB784-C13-QX is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB-C ESD protection, CAN FD transceiver clamping, and smart mirror power supply stabilization requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for BZB784-C13-QX 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 logic, discrete, and MOSFET solutions with leadership in automotive-qualified components.

The BZB784-Q series belongs to Nexperia's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for robust voltage clamping and ESD protection in automotive electronic control units and sensor nodes.

FAQ

What is the maximum non-repetitive peak reverse power dissipation for BZB784-C13-QX?

The BZB784-C13-QX supports up to 40 W non-repetitive peak reverse power dissipation (P_ZSM) at t_p = 100 µs, square-wave waveform, and T_amb = 25 °C - verified per IEC 60134 absolute maximum rating system and confirmed in Table 5 of the official datasheet.

Does BZB784-C13-QX support bidirectional clamping in a single package?

Yes - its pinout (K1, K2, CA) enables true bidirectional clamping: applying voltage between K1 and CA regulates at +13 V, while voltage between K2 and CA regulates at +13 V in the opposite polarity, forming a symmetrical ±13 V clamp relative to the common anode node.

How does the 100 nA reverse leakage affect low-power automotive applications?

At 100 nA reverse leakage (measured at VR = 8 V), the BZB784-C13-QX adds negligible current draw to always-on domains - for example, contributing only ~0.86 µC/day leakage in a LIN bus node, well within ASAM MCD-2 MC sleep-mode budget constraints.

Is the SOT323 package footprint compatible with automated reflow assembly?

Yes - the SC-70 outline complies with JEDEC MO-203-DA, and Nexperia provides validated reflow soldering footprints (Figure 5) with 0.55 mm solder paste stencil openings and 1.325 mm pad centers, supporting IPC-A-610 Class 2 and Class 3 assembly standards.

BZB784-C13-QX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: BZB784-Q

Package/Case:: SC-70, SOT-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Configuration:: 1 Pair Common Anode

Voltage - Zener (Nom) (Vz):: 13 V

Tolerance:: ±5%

Power - Max:: 180 mW

Impedance (Max) (Zzt):: 30 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 8 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

BZB784-C13-QX FAQ

1.How can I place an order for BZB784-C13-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for BZB784-C13-QX 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 BZB784-C13-QX reliable?

The price and inventory of BZB784-C13-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZB784-C13-QX is usually 5 days.

3.What payment methods are accepted for BZB784-C13-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZB784-C13-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZB784-C13-QX?

BZB784-C13-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZB784-C13-QX 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 BZB784-C13-QX?

For technical support, including BZB784-C13-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZB784-C13-QX requirements.

6.How does Aetrix verify that BZB784-C13-QX is sourced from the original manufacturer or authorized distributors?

All BZB784-C13-QX 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 BZB784-C13-QX meets industry standards.

7.What is the process for return or replacement of BZB784-C13-QX?

All BZB784-C13-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZB784-C13-QX, 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 BZB784-C13-QX part is unused and in its original packaging.

Return procedure for BZB784-C13-QX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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