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STMicroelectronics
L4973V5.1

L4973 Series 55 V 3.5 A Adjustable/Fixed Step Down Switching Regulator - DIP-18

Distributor	Stock		1	10	100	1,000
DigiKey	777	USD	5.40	5.40	3.97	3.38	Visit Site
Mouser	1,810	USD	5.40	4.85	3.98	3.38	Visit Site
Future Electronics	0	USD			3.60	3.44	Visit Site
RS	999	GBP		4.09	3.99	3.99	Visit Site
element14 APAC	303	SGD	7.72	6.94	5.69	4.85	Visit Site

STMicroelectronics
L4973D5.1-013TR

L4973 Series 55 V 3.5 A 300 KHz SMT Step Down Switching Regulator - SOIC-20

Distributor	Stock		1	10	100	1,000
DigiKey	1,002	USD	5.67	5.09	4.17	3.55	Visit Site
TME	0	EUR	5.86	5.64	4.51	3.67	Visit Site
Mouser	239	USD	5.67	5.10	4.18	2.99	Visit Site
Avnet	0	USD				3.15	Visit Site
Future Electronics	0	USD				2.94	Visit Site

STMicroelectronics
L4973D5.1

L4973 Series 5.1 V 3.5 A Surface Mount Step Down Switching Regulator - SOIC-20

Distributor	Stock		1	10	100	1,000
Future Electronics	0	USD			4.93	4.61	Visit Site
Anglia	202	GBP	3.49	3.49	2.85	2.85	Visit Site
RS	0	GBP	4.53	4.30	4.08	4.08	Visit Site
Microchip USA	211	USD			39.45	39.45	Visit Site
Heisener Electronics	419,044	USD	3.47	3.47	3.47	3.47	Visit Site

STMicroelectronics
L4973D3.3

3.5A Step Down Switching Regulator | IC Reg Buck ADJ/3.3V 3.5A 20SO

Distributor	Stock		1	10	100	1,000
Mouser	3,524	USD	5.75	5.16	4.23	3.06	Visit Site
Future Electronics	0	USD			3.90	3.63	Visit Site
element14 APAC	1,279	SGD	8.22	7.38	6.05	4.38	Visit Site
Farnell	1,279	GBP	5.08	4.13	3.38	2.88	Visit Site
RS	0	GBP	4.60	4.08	3.68	3.68	Visit Site

STMicroelectronics
L4973V3.3

Switching Regulator, Voltage-mode, 5.5A, 300kHz Switching Freq-Max, BCDMOS, PDIP18

Distributor	Stock		1	10	100	1,000
Verical	10	USD		4.61	4.61	4.61	Visit Site
TME	0	EUR	3.90	3.04	2.82	2.82	Visit Site
Microchip USA	147	USD			37.42	37.42	Visit Site
Heisener Electronics	185,893	USD	5.86	5.86	5.86	5.86	Visit Site
Win Source	40	USD		8.47	8.47	8.47	Visit Site

STMicroelectronics
L4973D3.3-013TR

Switching Regulator, Voltage-mode, 5.5A, 300kHz Switching Freq-Max, BCDMOS, PDSO20

Distributor	Stock		1	10	100	1,000
Avnet	6,000	USD				3.33	Visit Site
DigiKey	2,006	USD	6.00	5.39	4.41	3.76	Visit Site
Arrow Electronics	965	USD	3.58	3.46	3.19	2.87	Visit Site
Verical	965	USD		3.46	3.19	3.18	Visit Site
TME	0	EUR	5.78	5.21	4.13	3.91	Visit Site

Microchip
CDLL4973

Diode Zener Single 43V 5% 5W 2-Pin E-Pack

Distributor		1	10	100	1,000
DigiKey	USD			9.65	9.65	Visit Site
Microchip	USD	10.40	10.40	10.40	10.40	Visit Site
Onlinecomponents.com	USD			10.19	10.19	Visit Site
Master Electronics	USD			10.19	10.19	Visit Site
NAC Semi	USD			9.91	9.06	Visit Site

STMicroelectronics
E-L4973V3.3

Conv DC-DC Dual Step Down 5V to 55V 18-Pin Power PDIP Tube

Distributor	Stock		1	10	100	1,000
Microchip USA	496	USD				9.95	Visit Site
Component Stockers USA	742	USD	99.99	99.99	99.99	99.99	Visit Site
Utmel Electronic	289	USD	18.56	17.51	16.52	15.58	Visit Site
Run Hong Electronics	8,654	USD	0.110	0.110	0.110	0.110	Visit Site
LTL Group	10	USD	4.91	4.91	4.91	4.91	Visit Site

STMicroelectronics
STEVAL-ISA090V1

3.5 A step down switching regulator (Vin=8 to 55 V) based on L4973

Distributor	Stock		1	10	100	1,000
Avnet	0	USD			60.45	56.55	Visit Site
Future Electronics	0	USD	66.25	64.55	63.09	63.09	Visit Site
Anglia	0						Visit Site
Lixinc	7,739	USD	48.75	48.75	48.75	48.75	Visit Site
Win Source	680						Visit Site

STMicroelectronics
EVAL4973

Power Management IC Development Tools Eval Board for L4973

Distributor	Stock		1	10	100	1,000
Component Stockers USA	253	USD	99.99	99.99	99.99	99.99	Visit Site
Utmel Electronic	7,394						Visit Site
Suntronic	1,109	USD		15.95	15.95	15.95	Visit Site
AiPCBA	214	USD	12.62	12.62	12.62	12.62	Visit Site
Esaler Electronic	4,800						Visit Site