TVS - Mixed Technology

Part Number	Description / PDF	Quantity
P0721SCRP Wickmann / Littelfuse	SIDAC UNIDIR 65V 500A DO-214AA	0
SP721ABT Wickmann / Littelfuse	TVS ARRAY ESD 6 INPUT 8-SOIC	0
P1101CA2 Wickmann / Littelfuse	SIDAC DL-CHP SLIC 95V 150A DO214	0
ZEN132V130A24CE Wickmann / Littelfuse	TVS POLYZEN SMD 13.4V	0
2856812 Phoenix Contact	SURGE PROTECT PLUGGABLE 120VAC	0
ZEN056V230A16YC Wickmann / Littelfuse	POLYZEN PPTC/ZENER SMD	0
B1101UA4LRP Wickmann / Littelfuse	BATTRAX SLIC DUAL NEG 50A MS013	0
L9700D013TR STMicroelectronics	IC LIMITER HEX PRECISON 8-SOIC	0
2905234 Phoenix Contact	SURGE PROTECTION MODULE 150V	632
MAX366CSA+T Maxim Integrated	IC CIRC PROT SIGNAL-LINE 8-SOIC	0
SPUSB1CJT Wickmann / Littelfuse	SURGE SUPPRESOR USB 33OHM SC70-6	0
NUS2045MNT1G Sanyo Semiconductor/ON Semiconductor	IC OVP W/20V P-CH MOSFET DFN8	0
ZEN056V260A16CE Wickmann / Littelfuse	TVS POLYZEN SMD 5.6V	0
2905229 Phoenix Contact	SURGE PROTECTION MODULE 264V	0
STF701.TCT Semtech	IC TVS ARRAY 2-UNI 100mW SC70-5	0
MAX14895EETE+T Maxim Integrated	IC PORT PROTECTION VGA 16TQFN	0
B72587J3200K000 TDK EPCOS	VARISTOR 33V 800A RADIAL	0
SPUSB1AJT Wickmann / Littelfuse	SURGE SUPPRESOR USB 12OHM SC70-6	0
P0901SARP Wickmann / Littelfuse	SIDAC UNIDIR 75V 150A DO-214AA	0
P1101SC Wickmann / Littelfuse	SIDAC SLIC UNI 95V 400A DO-214AA	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