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Contents

Pinout
Key specifications
Electrical characteristics
Materials and finish
CAD (KiCad official)
Provenance

README

markdown

1XXD38400MMB

KDS Daishinku · Temperature Compensated Crystal Oscillators (TCXOs) · SMD2016-4P

1XXD38400MMB from KDS Daishinku, in a SMD2016-4P. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	GND	power_in	Ground connection; pin #1 is marked by the index on the package outline.
2	GND	power_in	Ground connection.
3	Output	output	Clipped sine wave (DC-coupled) output, at least 0.8 Vp-p into a 10 kΩ // 10 pF load.
4	VCC	power_in	Supply voltage input, recommended 1.71 to 1.89 V (1.8 V typ.), absolute maximum -0.3 to +4.6 V.

Key specifications

Parameter	Value
Manufacturer	KDS Daishinku
Package	SMD2016-4P
Category	Crystals/Oscillators/Resonators
Pins	4

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
Supply Voltage	VCC	-0.3		4.6	V		2
Storage Temperature Range	T_STG	-40		85	C		2
Supply Voltage	VCC	1.71	1.8	1.89	V		2
Load Impedance (resistance part)	LOAD_R	9	10	11	kΩ		2
Load Impedance (parallel capacitance)	LOAD_C	9	10	11	pF		2
Operating Temperature Range	T_OPR	-30		85	C		2
Nominal Frequency			38.4		MHz		2
Current Consumption				2	mA	TA=-30~+85C, LOAD_R//C=10kΩ//10pF, VCC=+1.8V	2
Output Level		0.8			VP-P	Clipped sine wave (DC-coupled)	2
Symmetry		40		60	%	GND level (DC cut)	2
Harmonics				-5	dBc		2
Frequency Tolerance		-1.5		1.5	ppm	After 2 times reflow, ref. to nominal frequency, TA=+25C	2
Frequency Stability vs Temperature		-0.5		0.5	ppm	TA=-30~+85C, ref. to frequency (TA=+25C)	2
Frequency Stability vs Supply Voltage		-0.2		0.2	ppm	VCC=+1.8±5%	2
Frequency Stability vs Load Variation		-0.2		0.2	ppm	LOAD_R//C=(10kΩ//10pF)±10%	2
Frequency Stability vs Aging		-1		1	ppm/year	TA=Room ambient	2
Start Up Time				2	ms	@90% of final Vout level	2
SSB Phase Noise				-125	dBc/Hz	Relative to F0 level offset 1kHz	2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
housing	PET		Cover Tape : PET + Olefin Resin (Conductivity)	8
contacts		silver	Leads, such as solder, are not used for this product. (Lead Free) 17.6 About the existence of silver and mercury use	13

CAD (KiCad official)

Symbol: 1XXD38400MMB
Footprint: Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm
3D model: SMD2016-4P (KiCad packages3D, STEP)
3D model files: 1xxd38400mmb-etched.step / 1xxd38400mmb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1xxd38400mmb.step / 1xxd38400mmb.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: KDS Daishinku datasheet (14 pp, sha256 782224ddef0664ff, retrieved 2026-10-22, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF