TVS - Mixed Technology

Part Number	Description / PDF	Quantity
VM474MK801R030P050 KEMET	VARISTOR 47V 800A RADIAL	0
B1201UALRP Wickmann / Littelfuse	BATTRAX SLIC DUAL NEG 50A MS013	0
SDP1300Q38CB Wickmann / Littelfuse	SIDAC BI 120V 500A QFN 5X6 8L	0
TCM1050DR Texas Instruments	TCM1050 DUAL TRANSIENT-VOLTAGE S	12500
GMOV-20D111K J.W. Miller / Bourns	GMOV 20MM, 115VRMS	0
B3164UCLRP Wickmann / Littelfuse	BATTRAX SLIC DUAL NEG 500A MS013	0
SN75240PW Texas Instruments	IC DUAL USB PORT TVS 8-TSSOP	678
TPD2S701QDGSRQ1 Texas Instruments	TPD2S701-Q1 AUTOMOTIVE USB 2-CHA	34725
P0721Q22CLRP Wickmann / Littelfuse	SIDAC UNI 65V 500A QFN 3.3 2L	0
TL7726CDG4	HEX CLAMPING CIRCUITS	0
VM105MK801R020P050 KEMET	VARISTOR 33V 800A RADIAL	1000
IXBOD1-10 Wickmann / Littelfuse	IC SGL DIODE BOD 0.9A 1000V FP	0
TL7726QD Texas Instruments	IC HEX CLAMPING CIRCUITS 8-SOIC	174
MAX6499ATA+T Maxim Integrated	IC CNTRLR PROT SW 8-TDFN	4810
MAX367EWN+ Maxim Integrated	IC CIRCUIT PROTECTR 1LINE 18SOIC	360
2800106 Phoenix Contact	TYPE 1 / CLASS I / B ARRESTER	0
P0901UALRP Wickmann / Littelfuse	SIDACTOR UNI 4CHP 75V 50A MS013	0
HDMI05-CL02F3 STMicroelectronics	IC HDMI ESD 3V 9-FLIPCHIP	0
VM474MK122R014P050 KEMET	VARISTOR 24V 1.2KA RADIAL	0
ESD02A12VR25V Stackpole Electronics, Inc.	VARISTOR 25V 0402	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