TVS - Mixed Technology

Part Number	Description / PDF	Quantity
BPH500YPV Eaton	REPLACEMENT MODULE 500V MCOV HYB	0
IXBOD1-07 Wickmann / Littelfuse	IC SGL DIODE BOD 0.9A 700V FP	0
002445209 Altech Corporation	SURGE PROTECTIVEC-PV100VDC 20KAR	0
MAX6497ATA+ Maxim Integrated	72V, OVERVOLTAGE-PROTECTION SWIT	1900
IXBOD1-13R Wickmann / Littelfuse	IC DIODE MODULE BOD 1.25A 1300V	0
IXBOD1-20R Wickmann / Littelfuse	IC DIODE MODULE BOD 0.9A 2000V	0
IXBOD1-13RD Wickmann / Littelfuse	IC DIODE MODULE BOD 0.2A 1300V	0
4B06B-540-125/219 J.W. Miller / Bourns	RES NET MULT OHM 13SIP	0
IXBOD1-06 Wickmann / Littelfuse	IC SGL DIODE BOD 0.9A 600V FP	88
BPHA60D60LV Eaton	REPLACEMENT MODULE 60V HYBRID LV	0
IXBOD1-40R Wickmann / Littelfuse	IC DIODE MODULE BOD 0.7A 4000V	0
P1501DF-1E Wickmann / Littelfuse	"FVSP, 140V, 30A SOIC, 8L, ROHS"	0
2804704 Phoenix Contact	SURGE PROTECTOR DIN RAIL	0
IXBOD1-28R Wickmann / Littelfuse	IC DIODE MODULE BOD 0.9A 2800V	0
002445204 Altech Corporation	SURGE PROTECTIVEB-PV550VDC 12.5K	0
IXBOD1-15RD Wickmann / Littelfuse	IC DIODE MODULE BOD 0.2A 1500V	0
002445210 Altech Corporation	SURGE PROTECTIVEC-PV550VDC 20KAR	0
BPH300YPV Eaton	REPLACEMENT MODULE 300V MCOV HYB	0
IXBOD1-42R Wickmann / Littelfuse	IC DIODE MODULE BOD 0.7A 4200V	0
IXBOD1-12RD Wickmann / Littelfuse	IC DIODE MODULE BOD 0.2A 1200V	440

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