Sepia
Manufacturer	CAF
Constructed	2001 (order date) 12 units[1] 2004 (order date) 45 units[1]
Capacity	Class 120 : 237 (+1 reserved)[2] Class 121 : 280 (+2)
Operators	Renfe, TCDD
Lines served	Ankara-İstanbul İstanbul-Konya Madrid-Pamplona-Hendaye Madrid-Logroño Madrid-Segovia-Valladolid line Barcelona-Vigo Barcelona-Bilbao/Irun lines
Specifications
Car body construction	Aluminium[3]
Train length	106.23 m (348 ft 6 in)[3]
Car length	27.35 m (89 ft 9 in) (end cars)[3] 25.780 m (84 ft 7.0 in) (intermediate cars)[3]
Width	2.92 m (9 ft 7 in)[3]
Height	4.1 m (13 ft 5 in)[3]
Floor height	1.3 m (51 in)[3]
Doors	1 per side per carriage[3]
Maximum speed	250 km/h (160 mph)[2]
Weight	225 tonnes (221 long tons; 248 short tons) empty)[4]
Axle load	15.6 t (15.4 long tons; 17.2 short tons)
Traction system	Electrical
Power output	4.80 MW (6,440 hp) (25 kV AC, TCDD), 4.0 MW (5,400 hp) (25 kV AC, Renfe), 2.7 MW (3,600 hp) (3 kV DC)[2]
Transmission	Body mounted motor via cardan shaft to inner axle of each bogie.[5]
Acceleration	0.52 m/s2 (1.7 ft/s2)[2]
Deceleration	0.50 m/s2 (1.6 ft/s2) @ 120 km/h (75 mph)[2] 0.35 m/s2 (1.1 ft/s2) @ 250 km/h (160 mph)[2]
Electric system(s)	Catenary 25 kV 50 Hz AC, 3 kV DC[3]
Current collector(s)	Pantograph
UIC classification	(1A)'(A1)'-(1A)'(A1)'-(1A)'(A1)'-(1A)'(A1)'
Braking system(s)	regenerative/rheostatic and pneumatic disc brakes[5]
Safety system(s)	ERTMS N1/2[6]
Multiple working	2 trainsets[5]
Track gauge	1,668 mm (5 ft 5+21⁄32 in)/ 1,435 mm (4 ft 8+1⁄2 in) standard gauge[3]

CAF Sepia is a family of high-speed electric multiple unit trains built by CAF and used in Spain and Turkey. The Sepia is based on the Class 120 high-speed trains manufactured by CAF for the Renfe Operadora (Renfe). The Renfe Operadora was the first to order CAF high speed trains; it ordered 12 of these units in 2001, the Turkish State Railways (TCDD) 12 units. The trains were delivered in 2004 for service. The trains were labelled and marketed as the Sepia by their manufacturer, CAF.

Renfe Class 120/121

Renfe ordered twelve units in 2001, and a further 45 units in 2004^[7]

29 units of the class RENFE Class 121 were ordered^{[dubious – discuss]} for medium-distance high-speed Avant services. The units are very similar to the Class 120 but include additional electrical equipment for redundancy (a requirement for trains using the Guadarrama Tunnel), and do not provide first class seating, raising the number of seats to 282.

HT65000

Turkish State Railways ordered 12 Sepia tilting trains for its main lines. The 6-car trains, delivered as HT65000, were derived from the Alvia Class 120, 121.The HT65000 can reach a maximum speed of 250 km/h, in revenue service on the Turkish high-speed railway network, the maximum it reaches is 250 km/h between Istanbul Haydarpaşa railway station and Ankara Railway Station stations and between Ankara Railway Station and Konya Railway Station.

The first set left Spain on November 10, 2007 and arrived in Turkey at Kapıkule on November 20, 2007.^[8] Later, 4 more sets came to Turkey in 2008, 3 more in 2009 and 2 more in 2010. On March 13 2009 YHT service was started by one of these sets. Subsequently, 2 additional sets were ordered with the same characteristics, reaching a total of twelve HT65000 trains.^[9]