TVS - Mixed Technology

Part Number	Description / PDF	Quantity
P1701SALRP Wickmann / Littelfuse	SIDACTOR UNI 160V 50A DO214	0
VM105MK122R040P120 KEMET	VARISTOR 68V 1.2KA RADIAL	0
P1101UALTP Wickmann / Littelfuse	SIDACTOR SLIC UNI 4CHP 50A MS013	0
SZNCP3712ASNT1G	BUFFER/INVERTER BASED PERIPHERAL	108000
ADG467BRZ Analog Devices, Inc.	IC CHAN PROTECTOR OCTAL 18-SOIC	234
82357050330 Würth Elektronik Midcom	ESD SUPPRESSOR TVS 55V 0402	9986
ADG465BRT-REEL7 Analog Devices, Inc.	SINGLE CHANNEL PROTECTOR	0
ZEN056V175A12YM Wickmann / Littelfuse	POLYZEN PPTC/ZENER SMD	0
SP720ABTG Wickmann / Littelfuse	TVS ARRAY ESD 14CH 30V 16-SOIC	898
ESD02A5V5R25V Stackpole Electronics, Inc.	VARISTOR 25V 0402	6308
B1201UALTP Wickmann / Littelfuse	BATTRAX SLIC DUAL NEG 50A MS013	0
HDMI2C2-5F2 STMicroelectronics	ESD PROTECTION AND SIGNAL BOOSTE	4390
8231706A Würth Elektronik Midcom	ESD SUPPRESSOR TVS 40V 0402	6713
NCP347MTAFTBG Sanyo Semiconductor/ON Semiconductor	IC OVERVOLTAGE PROT CTLR 10WDFN	9
VM474MK122R040P050 KEMET	VARISTOR 68V 1.2KA RADIAL	0
P0641DF-1E Wickmann / Littelfuse	SIDACTOR SLIC ENHC 58V 30A 8SOIC	0
VK104MK151R095P050 KEMET	VARISTOR 150V 150A RADIAL	0
GMOV-20D650K J.W. Miller / Bourns	GMOV 20MM, 65VRMS	31
MAX366EPA+ Maxim Integrated	IC CIRCUIT PROT SIGNAL-LINE 8DIP	13800
B1101UALRP Wickmann / Littelfuse	BATTRAX SLIC DUAL NEG 50A MS013	0

TVS - Mixed Technology

1. Overview

Mixed Technology TVS devices combine multiple semiconductor materials and protection mechanisms to achieve superior transient voltage suppression performance. These hybrid solutions integrate silicon-based avalanche diodes, polymer-based ESD protection, and advanced packaging technologies to address complex electromagnetic interference (EMI) challenges in modern electronics. Their importance grows with the increasing demand for reliable protection in high-speed data lines, power systems, and sensitive ICs across industrial, automotive, and consumer applications.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Silicon-Polymer Hybrid TVS	Combines fast silicon diode response with polymer self-recovery capability	USB 3.2 interfaces, HDMI ports
Multi-Layer Varistor-TVS	Stacked silicon layers for multi-stage voltage clamping	Industrial power supplies, 5G base stations
Glass-Passivated Hybrid TVS	Hermetic glass encapsulation with integrated RC filtering	Automotive sensors, medical devices

3. Structure and Composition

Typical mixed technology TVS devices feature a 3D heterogeneous integration structure:

Active layer: Silicon carbide (SiC) or gallium nitride (GaN) semiconductor matrix
Passivation layer: Borosilicate glass or polymer composite
Electrode system: Multi-fingered aluminum-copper hybrid metallization
Thermal management: Embedded graphite heat spreader
Package: Lead-free QFN or DFN with EMI shielding coating

4. Key Technical Parameters

Parameter	Importance
Breakdown Voltage (Vbr)	Determines protection threshold for normal operation
Clamping Voltage (Vc)	Defines maximum voltage transmitted to protected circuit
Response Time (tr)	Measures speed of transition from blocking to conducting state
Power Dissipation (Pppm)	Indicates energy absorption capability during transients
Capacitance (Cj)	Critical for high-speed signal integrity preservation
Operating Temperature	Defines environmental reliability range (-55 C to +150 C typical)

5. Application Fields

Major industries utilizing mixed technology TVS devices include:

Telecommunications: 5G NR base stations, optical transceivers
Industrial Automation: PLC systems, motor drives
Automotive Electronics: CAN-FD interfaces, LiDAR systems
Consumer Devices: Smartphone charging ports, AR/VR headsets

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Specifications
Littelfuse	SMxxxHCA Series	40kV ESD protection, 0.5pF capacitance, 0.1ns response
STMicroelectronics	TVSH Series	Automotive qualified, AEC-Q101 certified, 300W peak power
Bourns	PGB1 Series	Multi-layer ceramic-silicon hybrid, 10Gbps data rate support

7. Selection Guidelines

Key considerations when selecting mixed technology TVS components:

Match breakdown voltage to system operating voltage (typically 10-15% margin)
Verify clamping voltage compatibility with protected IC's maximum ratings
Consider parasitic capacitance for high-speed (>1Gbps) applications
Evaluate thermal derating curves for intended operating environment
Check compliance with industry standards (IEC 61000-4-2, ISO 10605)
Assess packaging requirements (SMD vs through-hole, board space constraints)

8. Industry Trends

Emerging developments in mixed technology TVS field include:

Integration of AI-based predictive protection algorithms
Development of 3D-printed nanocomposite TVS structures
Adoption of wafer-level packaging for 0.1pF capacitance levels
Implementation of energy recovery features in hybrid architectures
Advancements in terahertz transient suppression materials