MFG:Fairchild Semiconductor Category:Discrete Semiconductor Products Package Cooled:N/A D/C:2010+
1N977BTR, 1N978B, 1N979B Datasheet download
Category: Discrete Semiconductor Products
MFG: Fairchild Semiconductor
Package Cooled: N/A
D/C: 2010+
Description: DIODE ZENER 56V 500MW 5% DO35
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PDF/DataSheet Download
Datasheet: 1N900
File Size: 69703 KB
Manufacturer: MICROSEMI [Microsemi Corporation]
Download : Click here to Download
PDF/DataSheet Download
Datasheet: 1N978B
File Size: 227155 KB
Manufacturer: MICROSEMI [Microsemi Corporation]
Download : Click here to Download
PDF/DataSheet Download
Datasheet: 1N979B
File Size: 227155 KB
Manufacturer: JGD [Jinan Gude Electronic Device]
Download : Click here to Download
| Technical/Catalog Information | 1N978B |
| Vendor | Fairchild Semiconductor |
| Category | Discrete Semiconductor Products |
| Voltage - Zener (Nom) (Vz) | 51V |
| Power - Max | 500mW |
| Impedance (Max) (Zzt) | 125 Ohm |
| Voltage - Forward (Vf) (Max) @ If | - |
| Current - Reverse Leakage @ Vr | 5A @ 38.8V |
| Tolerance | ±5% |
| Mounting Type | Through Hole, Axial |
| Package / Case | DO-35, Axial |
| Packaging | Bulk |
| Operating Temperature | -65°C ~ 200°C |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | 1N978B 1N978B |
The popular 1N957B thru 1N992B series of 0.5 watt Zener Voltage Regulators provides a selection from 6.8 to 200 volts in standard 5% or 10% tolerances as well as tighter tolerances identified by different suffix letters on the part number. These glass axial-leaded DO-35 Zeners are also available with an internal-metallurgical-bond option by adding a "-1" suffix. The 1N962B-1 thru 1N992B-1 are available in JAN, JANTX, and JANTXV military qualifications. Microsemi also offers numerous other Zener products to meet higher and lower power applications.
• Operating and Storage temperature: -65ºC to +175ºC
• Thermal Resistance: 250 ºC/W junction to lead at 3/8 (10 mm) lead length from body, or 310ºC/W junction to ambient when mounted on FR4 PC board (1 oz Cu) with 4 mm2 copper pads and track width 1 mm, length 25 mm
• Steady-State Power: 0.5 watts at TL < 50oC 3/8 inch (10 mm) from body or 0.48 W at TA < 25ºC when mounted on FR4 PC board as described for thermal resistance above (also see Figure1)
• Forward voltage @200 mA: 1.1 volts (maximum) for 1N957B 1N985B and 1.3 V for 1N985 1N992B
• Solder Temperatures: 260 ºC for 10 s (max)
• JEDEC registered 1N957B(-1) to 1N992B(-1) series
• Internal metallurgical bond option available by adding a "-1" suffix
• Also available in JAN, JANTX, and JANTXV qualifications per MIL-PRF-19500/117 by adding the JAN, JANTX, or JANTXV prefixes to part numbers for desired level of screening as well as "-1" suffix; (e.g. JANTX1N962B-1, JANTXV1N986C-1, etc.)
• Military Surface Mount equivalents also available in DO-213AA by adding a UR-1 suffix in addition to the JAN, JANTX, and JANTXV prefix; e.g. JANTX1N962BUR-1 (see separate data sheet)
• Commercial Surface Mount equivalents available as MLL957B to MLL992B or with "-1" suffix for bonded in the DO-213AA MELF style package (consult factory for others)
• DO-7 glass body axial-leaded Zener equivalents are also available
| Technical/Catalog Information | 1N979B |
| Vendor | Fairchild Semiconductor |
| Category | Discrete Semiconductor Products |
| Voltage - Zener (Nom) (Vz) | 56V |
| Power - Max | 500mW |
| Impedance (Max) (Zzt) | 150 Ohm |
| Voltage - Forward (Vf) (Max) @ If | - |
| Current - Reverse Leakage @ Vr | 5A @ 42.6V |
| Tolerance | ±5% |
| Mounting Type | Through Hole, Axial |
| Package / Case | DO-35, Axial |
| Packaging | Bulk |
| Operating Temperature | -65°C ~ 200°C |
| Lead Free Status | Lead Free |
| RoHS Status | RoHS Compliant |
| Other Names | 1N979B 1N979B |
The popular 1N957B thru 1N992B series of 0.5 watt Zener Voltage Regulators provides a selection from 6.8 to 200 volts in standard 5% or 10% tolerances as well as tighter tolerances identified by different suffix letters on the part number. These glass axial-leaded DO-35 Zeners are also available with an internal-metallurgical-bond option by adding a "-1" suffix. The 1N962B-1 thru 1N992B-1 are available in JAN, JANTX, and JANTXV military qualifications. Microsemi also offers numerous other Zener products to meet higher and lower power applications.
• Operating and Storage temperature: -65ºC to +175ºC
• Thermal Resistance: 250 ºC/W junction to lead at 3/8 (10 mm) lead length from body, or 310ºC/W junction to ambient when mounted on FR4 PC board (1 oz Cu) with 4 mm2 copper pads and track width 1 mm, length 25 mm
• Steady-State Power: 0.5 watts at TL < 50oC 3/8 inch (10 mm) from body or 0.48 W at TA < 25ºC when mounted on FR4 PC board as described for thermal resistance above (also see Figure1)
• Forward voltage @200 mA: 1.1 volts (maximum) for 1N957B 1N985B and 1.3 V for 1N985 1N992B
• Solder Temperatures: 260 ºC for 10 s (max)
• JEDEC registered 1N957B(-1) to 1N992B(-1) series
• Internal metallurgical bond option available by adding a "-1" suffix
• Also available in JAN, JANTX, and JANTXV qualifications per MIL-PRF-19500/117 by adding the JAN, JANTX, or JANTXV prefixes to part numbers for desired level of screening as well as "-1" suffix; (e.g. JANTX1N962B-1, JANTXV1N986C-1, etc.)
• Military Surface Mount equivalents also available in DO-213AA by adding a UR-1 suffix in addition to the JAN, JANTX, and JANTXV prefix; e.g. JANTX1N962BUR-1 (see separate data sheet)
• Commercial Surface Mount equivalents available as MLL957B to MLL992B or with "-1" suffix for bonded in the DO-213AA MELF style package (consult factory for others)
• DO-7 glass body axial-leaded Zener equivalents are also available
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