Fairchild 1N FDLL 914 A B 916 A B 4148 4448 Small Signal Diode Data Manual (1), (1)
Summary
Engineered for reliable performance in various circuits, these small signal diodes (including 1N914 and 1N916 series) are essential semiconducting components used for voltage regulation and signal flow control. This comprehensive technical datasheet provides critical electrical parameters, defining maximum ratings for reverse voltage, forward current, power dissipation, and thermal characteristics across multiple package types. Designed for electronics engineers and technical designers, this manual ensures accurate application specifications, allowing you to select the optimal diode performance for your next circuit development.
Page 1 Text Content
1N /FD LL 914/A /B / 916/A /B / 4148 / 4448 Sm all Signal D iode
January 2007
1N/FDLL 914/A/B / 916/A/B / 4148 / 4448 Small Signal Diode
LL-34 COLOR BAND MARKING DEVICE 1ST BAND 2ND BAND FDLL914 BLACK BROWN FDLL914A BLACK GRAY FDLL914B BROWN BLACK FDLL916 BLACK RED FDLL916A BLACK WHITE FDLL916B BROWN BROWN
LL-34
FDLL4148 BLACK BROWN
DO-35 THE PLACEMENT OF THE EXPANSION GAP FDLL4448 BROWN BLACK
HAS NO RELATIONSHIP TO THE LOCATION
Cathode is denoted with a black band
OF THE CATHODE TERMINAL
-1st band denotes cathode terminal and has wider width
Absolute Maximum Ratings* Ta=25°C unless otherwise noted Symbol Parameter Value Units VRRM Maximum Repetitive Reverse Voltage IO Average Rectified Forward Current m A IF DC Forward Current m A if Recurrent Peak Forward Current m A IFSM Non-repetitive Peak Forward Surge Current
Pulse Width = 1.0 second 1.0 Pulse Width = 1.0 microsecond 4.0
TSTG Storage Temperature Range -65 to +200 °C
TJ Operating Junction Temperature °C * These ratings are limiting values above which the serviceability of the diode may be impaired. NOTES: 1) These ratings are based on a maximum junction temperature of 200 degrees C. 2) These are steady state limits. The factory should be consulted on applications involving pulsed or low duty cycle operations.
Thermal Characteristics
Symbol Parameter Units
1N/FDLL 914/A/B / 4148 / 4448
PD Power Dissipation m W
RθJA Thermal Resistance, Junction to Ambient °C/W
©2 007 Fairchild Semiconductor Corporation www.fairchildsemi.com 1N /FDLL 914/A/B / 916/A/B / 4148 / 4448 Rev. B2
Page Summary Contents For Fairchild 1N FDLL 914 A B 916 A B 4148 4448 Small Signal Diode Data Manual (1), (1)
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 4 |
| File Size | 100.20 KB |
| Published | June 18, 2026 |
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Frequently Asked Questions
How is the cathode terminal identified on these diodes?
The cathode is denoted with a black band; the 1st band marks the cathode and has wider width.
What is the maximum repetitive reverse voltage rating?
The maximum repetitive reverse voltage (V_RRM) is 100 V at 25°C.
What is the operating junction temperature limit?
The operating junction temperature (T_J) is up to 175°C.
Can these diodes be used in life support devices?
No, they are not authorized for use in life support devices without written approval.