1. Device Overview

️· Type: Rectifier Diode (likely part of a family like 1N series)
️· Application: General-purpose rectifier
️· Key Features:
- Suitable for a variety of applications.
- Good for resistive or inductive loads.
- Can be used with capacitive loads but requires current derating by 20%.
️· Lead Length: 0.375" (9.5 mm) at Ta = 55°C

2. Electrical Characteristics

️· Test Conditions: Single Phase, Half Wave, 60 Hz, Resistive or Inductive Load, 25°C ambient temperature unless otherwise specified.
️· Table of Electrical Parameters (Based on the data provided, with corrected formatting):

Parameter	SF51	SF52	SF53	SF54	SF55	SF56	SF57	Units
Maximum Recurrent Peak Reverse Voltage	50	100	150	200	300	400	600	V
Maximum RMS Voltage	50	100	150	200	300	400	600	V
Maximum DC Blocking Voltage	35	70	105	140	210	280	420	V
Max. Average Forward Rectified Current	0.95	1.25	1.50	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	A
Peak Forward Surge Current (8.3 ms)	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	A
Max. Instantaneous Forward Voltage at 5A	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	V
Max. DC Reverse Current @ Rated Blocking	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	mA
Max. Reverse Recovery Time	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	ns
Typical Junction Capacitance	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	*Value Missing*	pF

3. Mechanical Dimensions

️· Package: DO-27
️· Dimensions (inches):
- 1.0 (Maximum)
- 0.375 (Lead Length)
- 0.285
- 0.052
- 0.048
- 0.220
- 0.197
Important Notes and Limitations

️· Incomplete Data: A significant number of electrical parameter values are missing in the provided information. This makes a full characterization impossible.
️· Text Quality: The original text quality was low, causing some interpretation challenges and potentially introducing errors.
️· Device Identification: The “SF51” through “SF57” designations are not standard device naming conventions. This suggests they may be internal part numbers or variations within a product line.
️· Derating: For capacitive loads, current must be derated by 20%.
️· Temperature Considerations: The value of the lead length is specified at 55°C. This value is for reference only.