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Nexperia USA Inc. BZA408B,115
- Part No.:
- BZA408B,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-74, SOT-457
- Datasheet:
-
BZA408B,115.pdf
- Description:
- TVS DIODE 5VWM 6TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,889
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Product details
Overview
BZA408B from Nexperia is a quadruple bidirectional ESD transient voltage suppressor in SOT457 (SC-74) package, designed for high-density I/O line protection. It delivers >15 kV ESD immunity per IEC 1000-4-2, features 70 dB pin-to-pin channel separation, and maintains low diode capacitance (<75 pF at 0 V) for signal integrity in audio/video and data interfaces.
For engineers reviewing the BZA408B datasheet, BZA408B pinout, BZA408B application, or BZA408B equivalent, key selection criteria include working reverse voltage (±5 V), clamping performance under ±1 kV ESD events, channel isolation in multi-line SCART or USB applications, and thermal resistance (340 K/W) for PCB layout-driven reliability.
Technical Context
The BZA408B integrates four independent bidirectional ESD protection diodes in a single monolithic die, each with symmetrical avalanche breakdown behavior enabling clamping of both positive and negative transients without external bias. Its non-clamping range (−5 V to +5 V) ensures transparent operation during normal signal swing.
Channel separation >70 dB is achieved via internal layout isolation and substrate design, minimizing crosstalk between protected lines-critical for differential or adjacent analog/audio paths. Low reverse leakage (<100 nA) and voltage-dependent capacitance (55 pF at 5 V, 75 pF at 0 V) support high-fidelity signal transmission up to tens of MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | >15 kV per IEC 1000-4-2 contact discharge-ensures robustness against human-body-model ESD events in handheld and peripheral equipment. |
| Working Reverse Voltage | ±5 V-defines safe operating window for unclamped signal integrity in 3.3 V/5 V logic and analog interfaces. |
| Peak Clamping Voltage | ≤10 V at 2 A, 1 ms pulse-limits transient overvoltage seen by downstream ICs during surge events. |
| Diode Capacitance | <75 pF at 0 V, <55 pF at 5 V-minimizes signal distortion and insertion loss in high-speed audio/data lines. |
| Channel Separation | >70 dB at 1 kHz/400 Hz-prevents coupling-induced noise between adjacent protected lines (e.g., SCART audio pairs). |
| Thermal Resistance | 340 K/W junction-to-soldering point-guides PCB copper area and thermal via design for sustained surge handling. |
Pinout & Package
SOT457 (SC-74) surface-mount package: 6-lead plastic package with gull-wing leads, 0.95 mm pitch, 3.1 mm × 2.7 mm body size, and 1.1 mm max height. Pin 1 index marked on top surface; marking code "Z8".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 | Anode tied internally to ground; cathode connects to Line 1 for bidirectional clamping path. |
| 2, 5 | Ground | Dual ground terminals reduce common-impedance coupling and improve return-path inductance for all four channels. |
| 3 | Cathode 2 | Clamps Line 2 transients to ground symmetrically for ±ESD events. |
| 4 | Cathode 3 | Provides dedicated clamping node for Line 3; electrically isolated from other cathodes except via shared ground. |
| 6 | Cathode 4 | Enables compact four-line protection without discrete devices-reduces board space and assembly cost. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD suppression | Single device protects both polarities of transient surges-eliminates need for dual-diode arrays or external bias networks. |
| High channel isolation | 70 dB separation prevents interference between adjacent protected lines (e.g., left/right audio or differential pairs). |
| Low-leakage operation | <100 nA reverse current at ±5 V ensures minimal DC loading on sensitive analog or logic inputs. |
| Signal-transparent capacitance | Capacitance drops to 55 pF at 5 V reverse bias-preserves rise time and bandwidth in 10–20 MHz video/audio signals. |
Applications
| SCART Interface Protection | USB 1.1 Data Line Protection |
|---|---|
Use Scenario: Protecting RGB, audio, and control lines in SCART connectors between TVs and VCRs/DVD players. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt ESD energy before reaching SoC or codec ICs. Use Value: Prevents latch-up or damage in legacy consumer AV gear while maintaining sub-50 pF loading on composite video and stereo audio paths. | Use Scenario: Safeguarding D+ and D− lines in USB 1.1 full-speed peripherals against user-handling ESD. IC Role / Device Role / Timing Role: Four-channel suppressor used as two independent differential pairs (D+/D− and VBUS/GND) with shared ground pins. Use Value: Enables compliance with IEC 61000-4-2 Level 4 without degrading signal eye diagram or increasing bit error rate. |
| Medical Monitor Signal Inputs | Industrial Audio I/O Modules |
Use Scenario: Shielding analog sensor inputs (ECG, SpO₂) and digital control lines in portable medical monitors. IC Role / Device Role / Timing Role: Front-end transient suppressor mounted within 2 mm of input jacks to minimize PCB trace inductance and clamping overshoot. Use Value: Maintains ±5 V non-clamping window compatible with rail-to-rail op-amp inputs and avoids false triggering of ADC reference rails. | Use Scenario: Protecting balanced XLR and unbalanced RCA inputs/outputs in pro-audio mixing consoles and stage boxes. IC Role / Device Role / Timing Role: Dual-channel use (pins 1/3/2/5 for left channel, pins 4/6/2/5 for right) with star-ground topology to prevent ground-loop noise coupling. Use Value: Delivers >70 dB inter-channel isolation to preserve stereo imaging and dynamic range in 24-bit/96 kHz audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDA6V1-4W6 | Lower clamping voltage (≤7 V @ 1 A), higher capacitance (110 pF @ 0 V), same SOT457 package. | Better for low-voltage logic (1.8 V/3.3 V), less suitable for 5 V analog lines due to higher loading. | Select when clamping voltage is prioritized over bandwidth; verify signal integrity at target frequency. |
| TPD2E001DRYR | Higher ESD rating (±15 kV air/±8 kV contact), lower capacitance (10 pF @ 0 V), but only dual-channel in same footprint. | Requires two devices for four-line coverage; superior for high-speed USB 2.0 or HDMI, not optimized for legacy AV. | Choose for next-gen interfaces demanding ultra-low capacitance; avoid if board space or BOM count is constrained. |
Compared with ESDA6V1-4W6 and TPD2E001DRYR, the BZA408B uniquely balances moderate capacitance, wide ±5 V operating window, and integrated four-channel architecture-making it optimal for cost-sensitive, mixed-signal consumer and industrial equipment where legacy interface compatibility and PCB real estate are critical.
Availability
BZA408B is available at Aetrix Electronics and suitable for SCART interface protection, USB 1.1 data line safeguarding, medical monitor signal inputs, and industrial audio I/O modules requiring stable component supply across long-lifecycle consumer electronics programs.
Supply support for BZA408B 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 high-performance discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.
The BZA408B belongs to Nexperia's ESD protection portfolio, engineered specifically for compact, multi-line I/O shielding in space-constrained consumer and medical electronics where signal fidelity and ESD robustness must coexist.
FAQ
What is the maximum peak pulse current the BZA408B can handle?
The BZA408B supports a non-repetitive peak reverse current of 2 A with 1 ms square pulse duration per diode, as defined in its Absolute Maximum Ratings. This corresponds to a peak power dissipation of 20 W under the same conditions. Thermal derating applies above 25 °C ambient, and PCB copper area must be optimized to manage junction temperature rise during repeated surges.
Can the BZA408B be used for unidirectional protection?
No-the BZA408B is inherently bidirectional due to its symmetrical Zener-like structure; it clamps both positive and negative transients equally around 0 V. For unidirectional applications requiring ground-referenced clamping only, a dedicated unidirectional TVS array such as PESD5V0S1BA should be selected instead.
How does the dual ground pin (pins 2 and 5) improve performance?
Pins 2 and 5 provide separate low-inductance return paths for the four suppression channels, reducing mutual impedance coupling and improving clamping consistency during multi-line simultaneous ESD events. This dual-ground configuration lowers effective series inductance compared to single-ground packages, directly reducing voltage overshoot (V = L·di/dt) during fast transients.
Is the BZA408B compliant with RoHS and REACH regulations?
Yes-the BZA408B is manufactured by Nexperia in accordance with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. It is lead-free, halogen-free, and qualified to MSL Level 1 per J-STD-020. Full compliance documentation, including substance declarations and test reports, is available through Nexperia's official product portal.
BZA408B,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- SC-74, SOT-457
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 4
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 20W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 75pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSOP
BZA408B,115 FAQ
1.How can I place an order for BZA408B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZA408B,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 BZA408B,115 reliable?
The price and inventory of BZA408B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZA408B,115 is usually 5 days.
3.What payment methods are accepted for BZA408B,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZA408B,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZA408B,115?
BZA408B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZA408B,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 BZA408B,115?
For technical support, including BZA408B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZA408B,115 requirements.
6.How does Aetrix verify that BZA408B,115 is sourced from the original manufacturer or authorized distributors?
All BZA408B,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 BZA408B,115 meets industry standards.
7.What is the process for return or replacement of BZA408B,115?
All BZA408B,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZA408B,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 BZA408B,115 part is unused and in its original packaging.
Return procedure for BZA408B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZA408B,115 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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