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For blocking diodes similar to the MA1317, there are several manufacturers that offer equivalent or similar products. Below is a list of manufacturers and popular model numbers that could serve as alternatives, depending on the specific voltage and current requirements of your application.

### Alternative Manufacturers and Model Numbers for Blocking Diodes:

1. Vishay

  - VS-40EPF04 (400V, 40A, TO-247)

  - VS-70HF120 (1200V, 70A, TO-247)

  - VS-20BQ040-M3 (40V, 20A, Schottky, TO-220)

2. ON Semiconductor

  - MBRB2535CT (35V, 25A, Schottky, TO-220)

  - MBR20100CT (100V, 20A, Schottky, TO-220)

  - MBR4045PT (45V, 40A, Schottky, TO-247)

3. STMicroelectronics

  - STPS40L15CW (150V, 40A, Schottky, TO-247)

  - STTH60R06 (600V, 60A, TO-247)

  - STTH12R06 (600V, 12A, TO-220AC)

4. Diodes Incorporated

  - SBR40A45CT (45V, 40A, Schottky, TO-220AB)

  - SBRT30A60CT (60V, 30A, Schottky, TO-220AB)

5. IXYS Corporation

  - DSEP60-06A (600V, 60A, TO-247)

  - DSSK40-01A (100V, 40A, TO-220AB)

  - DSEI60-12A (1200V, 60A, TO-247)

6. Infineon

  - IDP30E60 (600V, 30A, TO-220AC)

  - IDW60C65D1 (650V, 60A, TO-247)

  - IDH04G65C5 (650V, 4A, TO-220)

7. Panasonic

  - DB104G (400V, 1A, Bridge Rectifier)

  - S1M (1000V, 1A, DO-214AC)

8. ROHM

  - RB168MM150 (150V, 1A, Schottky, SOD-323FL)

  - RHRP86120 (1200V, 8A, TO-220AC)

9. Littelfuse

  - US1M (1000V, 1A, Ultrafast Recovery, DO-214AC)

  - SS36 (60V, 3A, Schottky, DO-214AC)

10. NXP Semiconductors

  - BYW29-200 (200V, 8A, TO-220AC)

  - BYT30P-1000 (1000V, 30A, TO-220)

### Considerations for Choosing an Equivalent Diode:

- Voltage Rating: Ensure the maximum reverse voltage (V_R) is equal to or greater than your system requirements.

- Current Rating: The diode should be able to handle the maximum forward current (I_F) of your application.

- Forward Voltage Drop: Schottky diodes typically have a lower voltage drop, which may improve efficiency in low-voltage systems.

- Package Type: Match the package type (e.g., TO-220, TO-247) for proper fit in your design.

Would you like help narrowing down the options based on more specific needs such as voltage, current, or application type?

When selecting a press-solder machine fit capacitor (50V, 680nF) in either tantalum or ceramic type, it’s essential to choose based on voltage rating, capacitance, and form factor for press soldering. Below are suitable capacitor part numbers for both tantalum and ceramic types:

Tantalum Capacitors (680nF, 50V)

Kemet T491C684K050AT

Capacitance: 680nF (0.68µF)

Voltage Rating: 50V

Type: Surface Mount, Tantalum

Temperature Range: -55°C to 125°C

Case Size: C (6032)

Tolerance: ±10%

AVX TAJA684K050RNJ

Capacitance: 680nF (0.68µF)

Voltage Rating: 50V

Type: Surface Mount, Tantalum

Temperature Range: -55°C to 125°C

Case Size: A (3216)

Tolerance: ±10%

Vishay 293D684X9050C2TE3

Capacitance: 680nF (0.68µF)

Voltage Rating: 50V

Type: Surface Mount, Tantalum

Temperature Range: -55°C to 85°C

Case Size: C (6032)

Tolerance: ±10%

Ceramic Capacitors (680nF, 50V)

Murata GRM32ER71H684KA01L

Capacitance: 680nF (0.68µF)

Voltage Rating: 50V

Type: Surface Mount, Multilayer Ceramic (MLCC)

Temperature Range: -55°C to 125°C

Case Size: 1210 (3225 metric)

Dielectric: X7R

Tolerance: ±10%

TDK C3216X7R1H684K160AB

Capacitance: 680nF (0.68µF)

Voltage Rating: 50V

Type: Surface Mount, Multilayer Ceramic (MLCC)

Temperature Range: -55°C to 125°C

Case Size: 1206

Dielectric: X7R

Tolerance: ±10%

Samsung CL21B684KBCNNNC

Capacitance: 680nF (0.68µF)

Voltage Rating: 50V

Type: Surface Mount, Multilayer Ceramic (MLCC)

Temperature Range: -55°C to 85°C

Case Size: 0805

Dielectric: X7R

Tolerance: ±10%