Quantity   Component name
1 × TOPSwitch II TOP223Y(N) TO-220 Three Terminal Off-Line PWM Switch Power Integrations datasheet at http://www.power.com/sites/default/files/product-docs/top221-227.pdf - got some TOP223Y's off eBay, but TOP223YN should be RoHS compliant replacement still in production. This chip looks standard in many Ansmann chargers, though it doesn't look very common otherwise.
1 × PS2501-1 NEC2501 DIP-4 Photocoupler Pretty standard optocoupler separating the line voltage and low voltage parts as you would find in the feedback circuit of most switch mode power supplies. The RoHS part is PS2501-1 http://www.cel.com/pdf/datasheets/ps2501.pdf
1 × 10uF 450v 105°C Aluminium Electrolytic Capacitor Line capacitor, holding the rectified line voltage. This is for a 230V model. I went with a 33uF model Rubycon WXA 18X25mm piece, which is physically the largest that will fit with some careful fitting, both for reasons of availability and durability.
1 × 47uF 25V 105°C Aluminium Electrolytic Capacitor In my case the auto restart/control pin bypass capacitor appears to have gone bad, though it wasn't outwardly visible. Best to replace this one with identical capacitance, as it's used to set auto-restart timing and control loop compensation.
1 × 372 Series, TR5®, Time-Lag Fuse 800mA 250V, 50A Breaking Capacity Littlefuse http://www.littelfuse.com/~/media/electronics/datasheets/fuses/littelfuse_fuse_372_datasheet.pdf.pdf - see text for details.
1 × 220UF 35V 105°C Aluminium Electrolytic Capacitor 8X12
1 × 1000UF 10V 105°C Aluminium Electrolytic Capacitor
1 × 220UF 16V 105°C Aluminium Electrolytic Capacitor