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  • Over Voltage, Current, Temperature Devices

  • When a circuit must be protected from overvoltage and there are failure modes in the power supply that can produce such overvoltages, the circuit may be protected by a device commonly called a crowbar circuit. When this device detects an overvoltage it causes a short circuit between the power supply and its return. This will cause both an immediate drop in voltage (protecting the device) and an instantaneous high current which is expected to open a current sensitive device (such as a fuse or circuit breaker). This device is called a crowbar as it is likened to dropping an actual crowbar across a set of bus bars (exposed electrical conductors).

Category Part Number

NUF6107MNTBG

Vendor: ON Semiconductor
Category: Over Voltage, Current, Temperature Devices
IC EMI FILTER 4LINE ESD 12-DFN

39214000440

Vendor: Littelfuse / Wickmann(R) Brand
Category: Over Voltage, Current, Temperature Devices
FUSE TIME-LAG 4.00A UL SHORT TE5

169.6885.5302

Vendor: Littelfuse / Wickmann Brand
Category: Over Voltage, Current, Temperature Devices
FUSE BLADE T-LAG 30A 32V LGN FK3

F1206B0R25FWTR

Vendor: AVX Corporation
Category: Over Voltage, Current, Temperature Devices
FUSE 0.25A 63V FAST THIN 1206

MF72-012D9

Vendor: Cantherm
Category: Over Voltage, Current, Temperature Devices
CURRENT LIMITER INRUSH 12OHM 20%

2035-40-B

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
GAS DISCHARGE TUBE MINI 2 POLE

7100.1019.13

Vendor: Schurter Inc
Category: Over Voltage, Current, Temperature Devices
FUSE 2.5A 250V T-LAG 3.5MM PCB

PFMF.050.2

Vendor: Schurter Inc
Category: Over Voltage, Current, Temperature Devices
PTC-FUSE SMD (1812)

38508000000

Vendor: Littelfuse / Wickmann(R) Brand
Category: Over Voltage, Current, Temperature Devices
FUSE TIP TELECOM 800MA 125V AMMO

7100.1112.13

Vendor: Schurter Inc
Category: Over Voltage, Current, Temperature Devices
FUSE 500MA 250V T-LAG 19MM PCB

TR/0603FA250-R

Vendor: Cooper/Bussmann (VA)
Category: Over Voltage, Current, Temperature Devices
FUSE 250MA 50V FAST SMD 0603

CL-170

Vendor: GE Sensing
Category: Over Voltage, Current, Temperature Devices
CURRENT LIMITER INRUSH

3402.0003.11

Vendor: Schurter Inc
Category: Over Voltage, Current, Temperature Devices
FUSE 63MA 63V FAST-ACT SMD

SMTY12A

Vendor: STMicroelectronics (VA)
Category: Over Voltage, Current, Temperature Devices
TVS TRANSKY 600W 12V SMA

VC121030G620DP

Vendor: AVX Corporation
Category: Over Voltage, Current, Temperature Devices
VARISTOR TVS 30VDC 220A 1210

2035-35-BT1

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
GAS DISCHARGE TUBE MINI 2 POLE

CN2220S14BAUTOG

Vendor: EPCOS Inc (VA)
Category: Over Voltage, Current, Temperature Devices
VARISTOR 14V RMS 2220 SMD

2026-23-A

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
GAS DISCHARGE TUBE 3 POLE

0034.5224

Vendor: Schurter Inc
Category: Over Voltage, Current, Temperature Devices
FUSE 800MA 250V 6.3X32 TLAG GLSS

PFRA.700

Vendor: Schurter Inc
Category: Over Voltage, Current, Temperature Devices
FUSE PTC 7.00A 30V RESET RADIAL

VC080505A150RP

Vendor: AVX Corporation
Category: Over Voltage, Current, Temperature Devices
TVS CERAMIC 5.6V 0805 SMD

2035-20-C

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
GAS DISCHARGE TUBE MINI 2 POLE

YPCL0120N

Vendor: GE Sensing
Category: Over Voltage, Current, Temperature Devices
THERMISTOR PTC OCP 120 OHM 25C

S05K300

Vendor: EPCOS Inc
Category: Over Voltage, Current, Temperature Devices
VARISTOR 300VRMS 5MM RADIAL

2026-47-CB

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
GAS DISCHARGE TUBE 3 POLE

F0805B2R50FSTR

Vendor: AVX Corporation
Category: Over Voltage, Current, Temperature Devices
FUSE 2.50A 63V FAST THIN 0805

MF-RX110

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
FUSE PTC RESETTABLE 1.10A HOLD

23111600029

Vendor: Littelfuse / Wickmann Brand
Category: Over Voltage, Current, Temperature Devices
FUSE FAST-ACT 1.6A 500V 6.3X32MM

YPCL0120T

Vendor: GE Sensing
Category: Over Voltage, Current, Temperature Devices
THERMISTOR PTC OCP 120 OHM 25C

2026-35-CB

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
GAS DISCHARGE TUBE 3 POLE

168.6785.5252

Vendor: Littelfuse / Wickmann(R) Brand
Category: Over Voltage, Current, Temperature Devices
FUSE BLADE FAST 25A 32V WHT FK1

VC060309A200DP

Vendor: AVX Corporation
Category: Over Voltage, Current, Temperature Devices
VARISTOR TVS 9.0VDC 30A 0603

S10K17E2

Vendor: EPCOS Inc
Category: Over Voltage, Current, Temperature Devices
VARISTOR 17V RMS 10MM RADIAL

CL-30

Vendor: GE Sensing
Category: Over Voltage, Current, Temperature Devices
CURRENT LIMITER INRUSH

2036-42-SM

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
GAS DISCHARGE TUBE MINI 3 POLE

MF-R700

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
FUSE PTC RESETTABLE 7A HOLD

MF72-001.5D15

Vendor: Cantherm
Category: Over Voltage, Current, Temperature Devices
CURRENT LIMITER INRSH 1.5OHM 20%

0ZRM0020FF2C

Vendor: Bel Fuse Inc
Category: Over Voltage, Current, Temperature Devices
PTC RESET 0.20A 120VAC/VDC RAD

F1206B0R25FSTR

Vendor: AVX Corporation
Category: Over Voltage, Current, Temperature Devices
FUSE 0.25A 63V FAST THIN 1206

2035-20-SM-RP

Vendor: Bourns Inc.
Category: Over Voltage, Current, Temperature Devices
GAS DISCHARGE TUBE MINI 2 POLE

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