My Inquiry
My Account
Nexperia USA Inc. BZA456A,115
- Part No.:
- BZA456A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- SC-74, SOT-457
- Datasheet:
-
BZA456A,115.pdf
- Description:
- TVS DIODE 5.6VWM 8VC 6TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,156
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZA456A from Nexperia is a quadruple ESD transient voltage suppressor diode in SOT457 (SC-74) package, configured as four cathodes sharing a common anode pair, with 5.6 V working voltage (IZ = 1 mA), 8 kV IEC 1000-4-2 ESD rating, and 8 V clamping voltage at 3 A peak pulse current - used for high-density I/O line protection in USB, keyboard, and data bus interfaces.
For engineers reviewing the BZA456A datasheet, BZA456A pinout, BZA456A application, or BZA456A equivalent, key selection criteria include common-anode quad-diode topology, 24 W 1 ms peak power dissipation, 140 pF capacitance at 3 V reverse bias, thermal resistance of 125 K/W, and SOT457 footprint compatibility with space-constrained PCB layouts.
Technical Context
The BZA456A integrates four monolithic silicon avalanche diodes in a single SOT457 package with dual common anodes (Pins 2 and 5), enabling simultaneous suppression of four independent signal lines. Its non-clamping range spans −0.5 V to 5.6 V, and it delivers 8 V clamping at 3 A IZSM with <1600 Ω differential resistance at low current.
Designed for fast transient response, it exhibits 240 pF capacitance at 0 V and drops to 140 pF at VR = 3 V, minimizing signal distortion on high-speed lines. Thermal performance is defined by junction-to-solder-point resistance of 125 K/W, supporting operation up to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 5.6 V at IZ = 1 mA - defines nominal DC operating threshold before clamping begins |
| Clamping Voltage (VZSM) | 8 V at IZSM = 3 A, tp = 1 ms - maximum voltage seen by protected line during ESD event |
| ESD Rating | >8 kV per IEC 1000-4-2 - meets industrial-grade electrostatic discharge immunity requirements |
| Peak Pulse Power (PZSM) | 24 W at tp = 1 ms - determines survivability under standardized ESD surge conditions |
| Diode Capacitance (Cd) | 140 pF at VR = 3 V, f = 1 MHz - low enough for USB 1.1/2.0 and audio interface signal integrity |
| Differential Resistance (rdif) | 400 Ω at IZ = 1 mA - impacts low-current leakage and precision of clamping onset |
| Thermal Resistance (Rth j-s) | 125 K/W - governs allowable power derating above Ts = 60 °C solder point temperature |
Pinout & Package
SOT457 (SC-74) surface-mount plastic package: 6-lead, 1.7 mm × 2.7 mm body, 0.95 mm pitch, 1.1 mm height, with marked Pin 1 indicator and moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode 1 | ESD path for first protected signal line; connects to I/O trace before connector |
| 2 | Common Anode A | Shared anode node for Diodes 1 & 2; must connect directly to clean system ground |
| 3 | Cathode 2 | ESD path for second protected signal line; routed with minimal loop area |
| 4 | Cathode 3 | ESD path for third protected signal line; electrically isolated from Cathodes 1–2 |
| 5 | Common Anode B | Shared anode node for Diodes 3 & 4; separate ground return recommended |
| 6 | Cathode 4 | ESD path for fourth protected signal line; supports quad-line bus protection |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel common-anode topology | Enables compact protection of four independent signal lines using one footprint - reduces PCB real estate by ~75% vs discrete diodes |
| Low clamping voltage (8 V @ 3 A) | Keeps downstream ICs within safe absolute maximum ratings during ±8 kV contact discharge events |
| 140 pF capacitance at 3 V bias | Preserves signal edge rate and eye diagram integrity on 12 Mbps USB or analog audio lines |
| 24 W peak pulse power handling | Supports full IEC 61000-4-2 Level 4 compliance without thermal runaway or parametric shift |
| −65 °C to +150 °C operating range | Validates use in automotive cabin modules and industrial controllers with extended ambient temperature profiles |
Applications
| USB 1.1/2.0 Interface Protection | Keyboard & Peripheral I/O Protection |
|---|---|
Use Scenario: Protecting D+ and D− data lines plus VBUS and ID pins on USB Type-A receptacles against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Quad-channel bidirectional TVS array providing symmetric clamping on all four lines with shared ground reference. Use Value: Prevents latch-up or gate oxide damage in USB transceivers while maintaining <1 ns response time and <140 pF loading. | Use Scenario: Shielding PS/2 keyboard scan matrix lines (CLK, DATA, +5V, GND) from user-hand ESD in office peripherals. IC Role / Device Role / Timing Role: Common-anode suppressor routing each key matrix signal through individual cathodes to dual ground paths. Use Value: Eliminates false keypresses and microcontroller resets caused by >4 kV air-discharge transients on unshielded cables. |
| Medical Sensor Interface Protection | Industrial Control Bus Protection |
Use Scenario: Safeguarding analog front-end inputs (e.g., ECG leads, temperature sensor outputs) connected to hospital-grade patient monitors. IC Role / Device Role / Timing Role: Low-leakage (2 µA @ 3 V) TVS array preserving DC accuracy while suppressing 8 kV contact ESD on sensitive biopotential nodes. Use Value: Maintains sub-µV offset stability and avoids baseline wander induced by transient-induced amplifier saturation. | Use Scenario: Hardening RS-485 transceiver data lines (A, B, RE, DE) in factory automation PLC I/O modules exposed to maintenance personnel ESD. IC Role / Device Role / Timing Role: Four-cathode configuration isolating differential pair and control signals with independent clamping thresholds. Use Value: Ensures uninterrupted Modbus RTU communication during field servicing without requiring external decoupling capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDA6V1-4 | Lower clamping voltage (6.5 V @ 1 A), higher capacitance (350 pF @ 0 V), same SOT457 package | Better for low-voltage logic (1.8 V/3.3 V I/O), less suitable for 5 V buses due to tighter margin | Select when protecting sub-3.3 V interfaces where lower clamping outweighs higher capacitance penalty |
| TPD4E001DPYR | Lower capacitance (10 pF @ 0 V), higher ESD rating (±15 kV), different DPK package (2.5 × 1.0 mm) | Optimized for high-speed USB 3.0/PCIe; incompatible footprint requires PCB redesign | Choose for new designs targeting >480 Mbps data rates where ultra-low capacitance is mandatory |
Compared with ESDA6V1-4 and TPD4E001DPYR, the BZA456A offers balanced trade-offs: moderate capacitance for 12 Mbps interfaces, proven 5.6 V clamping headroom for 5 V systems, and legacy SOT457 compatibility - making it optimal for cost-sensitive industrial and medical retrofits.
Availability
BZA456A is available at Aetrix Electronics and suitable for USB interface protection, keyboard I/O hardening, medical sensor front-ends, and industrial RS-485 bus shielding requiring stable component supply across multi-year production cycles.
Supply support for BZA456A 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-volume production of discrete semiconductors, specializing in robust, automotive-qualified ESD protection devices and logic solutions.
The BZA456A belongs to Nexperia's legacy Standard Products ESD protection portfolio, engineered specifically for cost-effective, high-reliability I/O line hardening in computing, medical, and industrial equipment.
FAQ
What is the maximum continuous forward current rating for the BZA456A?
The BZA456A supports a continuous forward current (IF) of 100 mA per diode at Ts = 60 °C. This rating assumes proper PCB copper pour and thermal relief design to maintain solder point temperature below 60 °C. Exceeding this current risks cumulative junction heating and long-term parameter drift, especially when multiple diodes conduct simultaneously.
Can the BZA456A be used for bidirectional signal line protection?
Yes - the BZA456A operates bidirectionally due to its symmetrical avalanche breakdown characteristic. Each cathode-anode path clamps both positive and negative transients, enabling protection of AC-coupled or differential lines like USB D+/D− without polarity constraints. The 5.6 V working voltage applies equally to both polarities.
How does the dual common anode configuration affect PCB layout?
The dual anodes (Pins 2 and 5) require separate low-inductance ground connections to minimize shared impedance during simultaneous multi-line ESD events. Routing each anode to distinct ground vias near the protected connector reduces crosstalk-induced voltage overshoot and ensures consistent clamping across all four channels.
Is the BZA456A compliant with RoHS and REACH regulations?
Yes - the BZA456A is manufactured in accordance with Nexperia's standard RoHS-compliant process and meets EU Directive 2011/65/EU and REACH SVHC requirements. The SOT457 package uses lead-free matte tin plating over nickel, and material declarations are available via Nexperia's product compliance portal using order code BZA456A,115.
BZA456A,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:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.6V
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- 8V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 24W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 240pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSOP
BZA456A,115 FAQ
1.How can I place an order for BZA456A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZA456A,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 BZA456A,115 reliable?
The price and inventory of BZA456A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZA456A,115 is usually 5 days.
3.What payment methods are accepted for BZA456A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZA456A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZA456A,115?
BZA456A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZA456A,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 BZA456A,115?
For technical support, including BZA456A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZA456A,115 requirements.
6.How does Aetrix verify that BZA456A,115 is sourced from the original manufacturer or authorized distributors?
All BZA456A,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 BZA456A,115 meets industry standards.
7.What is the process for return or replacement of BZA456A,115?
All BZA456A,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZA456A,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 BZA456A,115 part is unused and in its original packaging.
Return procedure for BZA456A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZA456A,115 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
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
-
D5V0L1B2WS-7
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…
