UNR221600L Equivalent & Substitute Parts

Part Overview

The UNR221600L is a pre-biased NPN bipolar junction transistor (BJT) manufactured by Panasonic Electronic Components in the Mini3-G1 surface mount package. This component is rated for 50 V collector-emitter breakdown voltage, 100 mA maximum collector current, and 200 mW maximum power dissipation. The device features a 4.7 kOhm base resistor and operates at 150 MHz transition frequency.

The UNR221600L is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN - Pre-Biased	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Resistor - Base (R1)	4.7	kOhms
DC Current Gain (hFE) Min @ Ic, Vce	160 @ 5mA, 10V	—
Vce Saturation (Max) @ Ib, Ic	250	mV @ 300µA, 10mA
Current - Collector Cutoff (Max)	500	nA
Frequency - Transition	150	MHz
Power - Max	200	mW
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the UNR221600L is determined by the following critical parameters:

Mandatory Matching Parameters:

Transistor Type: NPN - Pre-Biased
Current - Collector (Ic) Max: 100 mA
Voltage - Collector Emitter Breakdown (Max): 50 V
Resistor - Base (R1): 4.7 kOhms
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, or SOT-23-3

Allowable Variation Parameters:

DC Current Gain (hFE): Minimum 160 @ 5mA, 10V (substitute parts may have different test conditions but must meet or exceed gain specifications)
Vce Saturation: Maximum 250 mV @ specified conditions (substitute parts may have different test conditions)
Frequency - Transition: Minimum 150 MHz (higher frequencies are acceptable)
Power - Max: Minimum 200 mW (higher power ratings are acceptable)
Current - Collector Cutoff (Max): 500 nA (equal or lower acceptable)

Substitute parts are classified into three categories:

Direct Substitutes: Parts meeting all mandatory parameters with equivalent or superior electrical performance and active product status.

Similar Parts: Parts meeting core electrical specifications but with different internal resistor configurations (R2 emitter-base resistor) or different DC current gain characteristics, requiring circuit evaluation.

Upgrade Parts: Parts with enhanced specifications or superior availability, suitable for new designs or where performance improvement is beneficial.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Ic Max (mA)	Vce Breakdown (V)	R1 (kOhms)	hFE Min @ Ic, Vce	Vce Sat Max (mV)	Freq Trans (MHz)	Power Max (mW)	Package	Product Status
UNR221600L	Panasonic	100	50	4.7	160 @ 5mA, 10V	250 @ 300µA, 10mA	150	200	Mini3-G1	Obsolete
DDTC143TCA-7-F	Diodes Inc.	100	50	4.7	100 @ 1mA, 5V	300 @ 250µA, 2.5mA	250	200	SOT-23-3	Active
MMUN2216LT1G	onsemi	100	50	4.7	160 @ 5mA, 10V	250 @ 1mA, 10mA	—	400	SOT-23-3	Active
MUN2216T1G	onsemi	100	50	4.7	160 @ 5mA, 10V	250 @ 1mA, 10mA	—	338	SC-59	Active
SMMUN2216LT1G	onsemi	100	50	4.7	160 @ 5mA, 10V	250 @ 1mA, 10mA	—	246	SOT-23-3	Active
SMMUN2216LT3G	onsemi	100	50	4.7	160 @ 5mA, 10V	250 @ 1mA, 10mA	—	246	SOT-23-3	Active
SMUN2216T1G	onsemi	100	50	10	160 @ 5mA, 10V	250 @ 1mA, 10mA	—	230	SC-59	Active
DDTC143ECA-7-F	Diodes Inc.	100	50	4.7	20 @ 10mA, 5V	300 @ 500µA, 10mA	250	200	SOT-23-3	Active
DDTC143FCA-7-F	Diodes Inc.	100	50	4.7	68 @ 10mA, 5V	300 @ 500µA, 10mA	250	200	SOT-23-3	Active
DDTC143XCA-7-F	Diodes Inc.	100	50	4.7	30 @ 10mA, 5V	300 @ 500µA, 10mA	250	200	SOT-23-3	Active
PDTC143TT,215	NXP Semi.	—	—	—	—	—	—	—	—	Active

Engineering Selection Recommendations

Direct Substitutes (Recommended for Immediate Replacement):

The following parts are recommended as direct substitutes for the UNR221600L:

MMUN2216LT1G (onsemi): Matches all mandatory parameters with identical DC current gain specification (160 @ 5mA, 10V). Active product status with RoHS3 compliance. Higher power rating (400 mW) provides design margin. SOT-23-3 package compatible with original Mini3-G1 footprint.
SMMUN2216LT1G and SMMUN2216LT3G (onsemi): Identical electrical specifications to MMUN2216LT1G with SOT-23-3 package. Both RoHS3 compliant and REACH unaffected. SMMUN2216LT1G offers higher inventory availability (89,300 units).
MUN2216T1G (onsemi): Matches all mandatory parameters with identical DC current gain. SC-59 package variant. Active product status with RoHS3 compliance and REACH unaffected status.

Similar Parts (Require Circuit Evaluation):

The following parts meet core electrical specifications but feature different internal resistor configurations or DC current gain characteristics:

DDTC143TCA-7-F (Diodes Incorporated): Meets voltage, current, and base resistor specifications. Higher transition frequency (250 MHz) than original. Different DC current gain test conditions (100 @ 1mA, 5V vs. 160 @ 5mA, 10V). RoHS3 compliant. Requires verification of circuit performance under actual operating conditions.
DDTC143ECA-7-F, DDTC143FCA-7-F, DDTC143XCA-7-F (Diodes Incorporated): All feature 4.7 kOhm base resistor with additional emitter-base resistor (R2). DC current gain specifications differ significantly from original (20–68 @ 10mA, 5V). These parts are suitable for applications where lower gain or different switching characteristics are acceptable. RoHS3 compliant.

Upgrade Part:

PDTC143TT,215 (NXP Semiconductors): Active product status with RoHS3 compliance and REACH unaffected. Limited parameter data provided. Suitable for new designs where NXP qualification is required.

Selection Criteria:

For direct replacement in existing designs, select MMUN2216LT1G, SMMUN2216LT1G, or MUN2216T1G based on package requirement (SOT-23-3 or SC-59) and inventory availability. All three parts are active, RoHS3 compliant, and REACH unaffected.

For applications where circuit re-evaluation is acceptable, Diodes Incorporated DDTC143 series parts offer alternative gain characteristics and higher transition frequency.

Frequently Asked Questions (FAQ)

Q: Can DDTC143TCA-7-F be used as a direct replacement for UNR221600L?

A: DDTC143TCA-7-F meets the mandatory electrical parameters (100 mA, 50 V, 4.7 kOhm base resistor, SOT-23-3 package). However, the DC current gain test conditions differ (100 @ 1mA, 5V vs. 160 @ 5mA, 10V). Circuit evaluation is required to confirm performance under actual operating conditions. The part is active and RoHS3 compliant.

Q: What is the difference between SMMUN2216LT1G and SMMUN2216LT3G?

A: Both parts are electrically identical with matching specifications (100 mA, 50 V, 4.7 kOhm base resistor, 160 hFE @ 5mA, 10V, SOT-23-3 package). Both are active, RoHS3 compliant, and REACH unaffected. SMMUN2216LT1G has significantly higher inventory availability (89,300 units vs. 823 units).

Q: Why does SMUN2216T1G have a 10 kOhm base resistor instead of 4.7 kOhm?

A: SMUN2216T1G features a different internal base resistor value (10 kOhms vs. 4.7 kOhms). This affects circuit biasing and switching characteristics. This part is not a direct substitute and requires circuit re-design or verification before use.

Q: Are all substitute parts RoHS3 compliant?

A: All active substitute parts listed (MMUN2216LT1G, MUN2216T1G, SMMUN2216LT1G, SMMUN2216LT3G, SMUN2216T1G, DDTC143TCA-7-F, DDTC143ECA-7-F, DDTC143FCA-7-F, DDTC143XCA-7-F, and PDTC143TT,215) are RoHS3 compliant. The original UNR221600L product status is obsolete and does not carry RoHS certification.

Q: What is the difference between SOT-23-3 and SC-59 packages?

A: Both SOT-23-3 and SC-59 are surface mount packages for three-terminal devices. SOT-23-3 is a smaller footprint package, while SC-59 is a larger variant. Both are compatible with the original UNR221600L package specification (TO-236-3, SC-59, SOT-23-3). Package selection depends on PCB layout requirements and available footprint space.

Q: Can I use DDTC143ECA-7-F in place of UNR221600L?

A: DDTC143ECA-7-F meets the mandatory voltage (50 V), current (100 mA), and base resistor (4.7 kOhm) specifications. However, it features an additional emitter-base resistor (R2 = 4.7 kOhms) and significantly lower DC current gain (20 @ 10mA, 5V vs. 160 @ 5mA, 10V). This part is classified as similar and requires circuit evaluation before use.

Q: What is the advantage of MMUN2216LT1G over the original UNR221600L?

A: MMUN2216LT1G offers identical DC current gain (160 @ 5mA, 10V) and saturation voltage (250 mV) specifications. The part is active with RoHS3 compliance and REACH unaffected status. Power rating is doubled (400 mW vs. 200 mW), providing additional design margin. Inventory availability is significantly higher (21,285 units).

Q: Is PDTC143TT,215 suitable for new designs?

A: PDTC143TT,215 is an active NXP Semiconductors pre-biased BJT with RoHS3 compliance and REACH unaffected status. Limited detailed parameter data is provided in this reference. Consult NXP datasheets and qualification requirements before selecting this part for new designs.

Q: What is the Moisture Sensitivity Level (MSL) for substitute parts?

A: All substitute parts listed carry MSL 1 (Unlimited), matching the original UNR221600L specification. This indicates no moisture sensitivity restrictions for storage and handling.

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