1. Product Identification

️· Part Number: NE688M23
️· EIAJ1 Registered Number: 2SC5651
️· Package Outline: M23
️· Manufacturer: California Eastern Laboratories (CEL)

2. Absolute Maximum Ratings (Operating Limits - Exceeding these can cause permanent damage)

Parameter	Unit	Rating
VCBO (Collector-Base Voltage)	V	9
VCEO (Collector-Emitter Voltage)	V	6
VEBO (Emitter-Base Voltage)	V	2
IC (Collector Current)	mA	100
PT (Total Power Dissipation)	mW	TBD (To Be Determined)
TJ (Junction Temperature)	°C	150
TSTG (Storage Temperature)	°C	-65 to +150

3. Electrical Characteristics (Typical Performance - These represent typical values, not guaranteed minimums or maximums)

Symbol	Parameter/Condition	Unit	Min	Typ	Max
fT	Gain Bandwidth (VCE=1V, IC=3mA, f=2GHz)	GHz	4	5	-
NF	Noise Figure (VCE=1V, IC=3mA, f=2GHz)	dB	-	1.9	2.5
S21E	Insertion Power Gain (VCE=1V, IC=3mA, f=2GHz)	dB	3	4	-
hFE2	DC Current Gain (VCE=1V, IC=3mA)	-	80	-	145
ICBO	Collector Cutoff Current	µA	-	-	0.1
IEBO	Emitter Cutoff Current	µA	-	-	0.1
CRE3	Feedback Capacitance	pF	-	0.7	0.8

4. Typical Performance Curves (Illustrative Data - These show how the device behaves under various conditions)

️· Collector Current vs. Collector-Emitter Voltage (VCE): Shows the current flow for different VCE values.
️· Collector Current vs. Base-Emitter Voltage (VBE): Shows the current flow for different VBE values.
️· DC Current Gain (hFE) vs. Collector Current (IC): Shows how gain changes with current.
️· Noise Figure (NF) / Associated Gain vs. Collector Current (IC): Illustrates the relationship between noise performance and current.
️· Gain-Bandwidth Product (fT) vs. Collector Current (IC): Illustrates how frequency response changes with current.

5. Contact Information:

️· California Eastern Laboratories (CEL)
️· Address: 4590 Patrick Henry Drive, Santa Clara, CA 95054-1817
️· Phone: (408) 988-3500
️· Fax: (408) 988-0279
️· Website: [http://WWW.CEL.COM](http://WWW.CEL.COM)

Key Takeaways

️· The NE688M23 is a transistor designed for RF and microwave applications.
️· It’s a versatile part, as evidenced by the various performance curves showing its behavior under different operating conditions.
️· Refer to the "Absolute Maximum Ratings" carefully to avoid damaging the device.
️· The "Typical Performance Curves" provide valuable insight into the part's functionality and allow for optimized circuit design.