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NXP Semiconductors BZA856AL,115
- Part No.:
- BZA856AL,115
- Manufacturer:
- NXP Semiconductors
- Category:
- TVS Diodes
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
BZA856AL,115.pdf
- Description:
- TVS DIODE 5.6VWM SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:6,439
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Product details
Overview
BZA856AL,115 from Nexperia is a quadruple ESD transient voltage suppressor diode in SOT353 (SC-88A) package with common anode configuration, 5.6 V nominal working voltage (IZ = 1 mA), <125 pF capacitance at 0 V, and >8 kV contact discharge ESD rating per IEC 61000-4-2 - used for protecting four parallel data lines in USB or keyboard interfaces.
For engineers reviewing the BZA856AL,115 datasheet, BZA856AL,115 pinout, BZA856AL,115 application, or BZA856AL,115 equivalent, key selection criteria include clamping performance under 1 ms transients, low diode capacitance for high-speed signal integrity, common-anode layout efficiency, and thermal resistance (Rth j-a = 410 K/W) in compact SMT footprint.
Technical Context
The BZA856AL,115 integrates four monolithic Zener-based ESD protection diodes sharing a single anode terminal (Pin 2), enabling coordinated clamping of four independent signal lines to ground. Its design targets fast transient response with non-repetitive peak reverse power dissipation of 16 W (tp = 1 ms) and peak reverse current of 2.2 A.
Electrical behavior is defined by a 5.6 V nominal working voltage (5.32–5.88 V range), differential resistance ≤400 Ω at 1 mA, and temperature coefficient of +0.3 mV/K - ensuring stable clamping across ambient conditions without thermal runaway in multi-line protection schemes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 5.6 V (min 5.32 V, max 5.88 V at IZ = 1 mA) - defines clamping threshold for ESD events on protected lines |
| ESD Rating | >8 kV contact discharge per IEC 61000-4-2 - meets industrial and consumer system-level immunity requirements |
| Diode Capacitance | 125 pF at f = 1 MHz, VR = 0 V - low enough for USB 1.1/2.0 and audio interface signal integrity |
| Peak Reverse Power | 16 W (tp = 1 ms) - supports robust suppression of high-energy ESD pulses without failure |
| Thermal Resistance | 410 K/W junction-to-ambient (all diodes loaded) - constrains PCB layout to minimize trace inductance and maximize copper area |
| Forward Voltage | ≤1.3 V at IF = 200 mA - ensures minimal forward conduction loss during fault conditions |
| Reverse Current | ≤1000 nA at VR = 3 V - guarantees negligible leakage in standby mode for battery-powered systems |
Pinout & Package
SOT353 (SC-88A) surface-mount package: 5-lead plastic package with 1.3 mm × 1.8 mm body, 0.65 mm pitch, and 1.1 mm height - optimized for space-constrained I/O interfaces.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 | Protected signal line #1 - connects to I/O trace requiring ESD clamping to common anode |
| 2 | Common Anode | Shared anode node tied to GND or low-impedance return path - critical for simultaneous clamping of all four channels |
| 3 | Cathode 2 | Protected signal line #2 - electrically isolated but thermally coupled within monolithic die |
| 4 | Cathode 3 | Protected signal line #3 - enables compact routing of four-line buses (e.g., parallel keyboard scan lines) |
| 5 | Cathode 4 | Protected signal line #4 - eliminates need for four discrete TVS devices and reduces PCB real estate by ~70% |
Key Features
| Feature | Design Value |
|---|---|
| Quadruple Common-Anode Architecture | Single-package protection for four independent signal lines - reduces component count and improves layout symmetry |
| Low Clamping Voltage Drift | +0.3 mV/K temperature coefficient - maintains consistent ESD threshold across −40 °C to +85 °C operating range |
| High Peak Pulse Power | 16 W non-repetitive pulse handling (1 ms square wave) - exceeds IEC 61000-4-2 Level 4 requirement |
| Ultra-Low Leakage | ≤1000 nA reverse current at 3 V - prevents signal degradation and battery drain in always-on peripherals |
| Standardized SOT353 Footprint | Compatible with automated pick-and-place and reflow processes - supports high-volume manufacturing scalability |
Applications
| USB 1.1/2.0 Data Lines | Keyboard/Keypad Scan Lines |
|---|---|
Use Scenario: Protecting D+ and D− differential pair plus VBUS and ID pins in USB Type-A receptacles against contact ESD. IC Role / Device Role / Timing Role: ESD transient voltage suppressor providing bidirectional clamping to ground for four distinct signal paths. Use Value: Limits clamped voltage to <12 V during ±8 kV contact discharge, preserving USB PHY integrity without signal distortion from excessive capacitance. | Use Scenario: Shielding matrix-scanned keyboard rows/columns in industrial HMI panels from user-hand ESD events. IC Role / Device Role / Timing Role: Common-anode quad TVS absorbing fast-rising transients on up to four scan lines simultaneously. Use Value: Prevents false keypresses and microcontroller reset by clamping transients before they exceed GPIO absolute maximum ratings. |
| Audio Line Inputs (Line-In/Mic-In) | Parallel Printer Interface (Centronics) |
Use Scenario: Safeguarding analog audio inputs on PC sound cards or docking stations from electrostatic discharge during cable insertion. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp placed directly at connector to minimize stub inductance. Use Value: 125 pF capacitance avoids high-frequency roll-off in 20 Hz–20 kHz audio band while suppressing ±8 kV ESD. | Use Scenario: Protecting eight-bit parallel data bus (D0–D7) and control lines (STROBE, ACK) in legacy printer ports. IC Role / Device Role / Timing Role: Two BZA856AL,115 devices deployed to cover all eight data lines and critical handshaking signals. Use Value: Enables full-bus protection with only two ICs instead of eight discrete diodes - reducing BOM cost and assembly complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDA6V1SC6 | Lower capacitance (8 pF), higher working voltage (6.1 V), same SOT363 package but dual-channel only | Requires two devices to match BZA856AL,115's four-channel density; better suited for high-speed USB 3.0 or HDMI | Select when signal bandwidth >100 MHz is required and board space allows dual placement |
| TPD4E001DQAR | Four-channel, 5.5 V working voltage, 10 pF capacitance, 30 kV ESD rating, SON-10 package | Higher ESD rating and lower capacitance but different pinout and thermal profile - not drop-in | Choose for automotive-grade designs needing AEC-Q101 qualification and enhanced reliability margin |
Compared with ESDA6V1SC6 and TPD4E001DQAR, the BZA856AL,115 offers optimal balance of cost, four-channel integration, and proven field reliability in consumer computing interfaces - especially where legacy SOT353 footprint compatibility and moderate-speed signal protection are prioritized.
Availability
BZA856AL,115 is available at Aetrix Electronics and suitable for USB peripheral protection, keyboard interface hardening, and audio input safeguarding requiring stable component supply and long-term production continuity.
Supply support for BZA856AL,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 leader in discrete, logic, and power MOSFET semiconductors, spun off from NXP in 2017 and focused on high-volume, high-reliability components for automotive, industrial, and computing markets.
The BZA800AL series was developed specifically for compact, multi-line ESD protection in space-constrained I/O interfaces - emphasizing manufacturability, consistency, and compliance with IEC 61000-4-2 across consumer and industrial product lifecycles.
FAQ
What is the maximum clamping voltage of the BZA856AL,115 during an 8 kV ESD event?
The BZA856AL,115 does not specify a fixed clamping voltage in its datasheet, but measured clamping performance under IEC 61000-4-2 ±8 kV contact discharge shows typical clamped voltage below 12 V at peak current. This value depends on PCB layout parasitics and transient rise time. The BZA856AL,115 achieves this via its 5.6 V working voltage and low dynamic impedance, making it suitable for protecting 3.3 V and 5 V logic interfaces without overstressing downstream ICs.
Can the BZA856AL,115 be used for bidirectional signal lines like USB D+ and D−?
Yes, the BZA856AL,115 supports bidirectional protection because each cathode-anode path operates as a Zener diode in reverse bias and a forward-biased diode in positive overvoltage - enabling clamping of both positive and negative transients. For USB differential pairs, one BZA856AL,115 can protect D+, D−, VBUS, and GND-return path, provided the common anode is connected to system ground and layout minimizes shared impedance.
Is the BZA856AL,115 RoHS compliant and halogen-free?
Yes, the BZA856AL,115 is RoHS compliant and halogen-free per Nexperia's standard product policy. It meets EU Directive 2011/65/EU and IEC 61249-2-21:2011 requirements. Material declarations and test reports are available through Nexperia's official product portal using the full part number BZA856AL,115.
What is the recommended PCB layout for optimal ESD performance with the BZA856AL,115?
Optimal layout for the BZA856AL,115 requires placing the device within 3 mm of the protected connector, routing each cathode trace directly to its signal line with minimal length and width, connecting the common anode (Pin 2) to a solid ground plane via multiple vias, and avoiding shared return paths. The BZA856AL,115 datasheet explicitly warns that parasitic inductance increases clamping voltage (V = L·di/dt), so short, wide traces and dedicated ground pours are mandatory for achieving rated ESD immunity.
Does the BZA856AL,115 require external current-limiting resistors in series with protected lines?
No, the BZA856AL,115 does not require external series resistors for basic ESD protection, as its internal Zener structure handles transient energy absorption. However, if the protected line drives capacitive loads or interfaces with high-speed receivers, a small series resistor (e.g., 10–33 Ω) may be added to dampen ringing without compromising ESD performance - verified per application note AN10784 from Nexperia. The BZA856AL,115's 1.3 V forward voltage ensures minimal impact on normal signal levels.
BZA856AL,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.6V
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 24W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 240pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
BZA856AL,115 FAQ
1.How can I place an order for BZA856AL,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZA856AL,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 BZA856AL,115 reliable?
The price and inventory of BZA856AL,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZA856AL,115 is usually 5 days.
3.What payment methods are accepted for BZA856AL,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZA856AL,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZA856AL,115?
BZA856AL,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZA856AL,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 BZA856AL,115?
For technical support, including BZA856AL,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZA856AL,115 requirements.
6.How does Aetrix verify that BZA856AL,115 is sourced from the original manufacturer or authorized distributors?
All BZA856AL,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 BZA856AL,115 meets industry standards.
7.What is the process for return or replacement of BZA856AL,115?
All BZA856AL,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZA856AL,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 BZA856AL,115 part is unused and in its original packaging.
Return procedure for BZA856AL,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZA856AL,115 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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