MMBTA06_L98Z Equivalent & Substitute Parts

Part Overview

The MMBTA06_L98Z is an NPN bipolar junction transistor manufactured by onsemi, housed in a SOT-23-3 surface mount package. This component is rated for 80 V collector-emitter breakdown voltage with a maximum collector current of 500 mA and 350 mW power dissipation. The device operates across a temperature range of -55°C to 150°C and features a 100 MHz transition frequency.

The MMBTA06_L98Z 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. Substitute components must maintain electrical compatibility across critical parameters including voltage ratings, current capacity, gain characteristics, and thermal performance.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	80	V
Current - Collector (Ic) (Max)	500	mA
Vce Saturation (Max) @ Ib, Ic	250 mV @ 10 mA, 100 mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 100 mA, 1 V	—
Power - Max	350	mW
Frequency - Transition	100	MHz
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-23-3, TO-236-3, SC-59	—

Substitute Part Grouping Explanation

Substitute parts for the MMBTA06_L98Z are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes maintain all critical electrical parameters: 80 V collector-emitter breakdown voltage, 500 mA maximum collector current, 100 MHz transition frequency, and identical DC current gain specifications (100 @ 100 mA, 1 V). These parts are functionally interchangeable in the same circuit application. Direct substitutes include MMBTA06LT3G, SMMBTA06LT1G, SMMBTA06WT3G, MMBTA06-7-F, MMBTA06-TP, and PMBTA06,215.

Similar Substitutes share the same transistor type (NPN) and package form factor but differ in one or more electrical parameters. The part MMBT6429LT1G operates at reduced voltage (45 V) and current (200 mA) ratings with significantly higher transition frequency (700 MHz), making it suitable only for applications with lower voltage and current requirements. The part 2SD1782KT146Q maintains voltage and current ratings but exhibits different saturation voltage characteristics and higher collector cutoff current, requiring circuit-level evaluation.

Substitution eligibility is determined by matching the following key parameters:

Collector-emitter breakdown voltage: 80 V
Maximum collector current: 500 mA
DC current gain: 100 @ 100 mA, 1 V
Saturation voltage: 250 mV @ 10 mA, 100 mA
Transition frequency: 100 MHz
Package compatibility: SOT-23-3 or equivalent footprint

Parameter Comparison

Part Number	Manufacturer	Vce(BR) (V)	Ic(Max) (mA)	hFE(Min) @ Ic, Vce	Vce(Sat) (mV)	Power (mW)	Frequency (MHz)	Package	Status
MMBTA06_L98Z	onsemi	80	500	100 @ 100 mA, 1 V	250 @ 10 mA, 100 mA	350	100	SOT-23-3	Obsolete
MMBTA06LT3G	onsemi	80	500	100 @ 100 mA, 1 V	250 @ 10 mA, 100 mA	225	100	SOT-23-3	Active
SMMBTA06LT1G	onsemi	80	500	100 @ 100 mA, 1 V	250 @ 10 mA, 100 mA	225	100	SOT-23-3	Active
SMMBTA06WT3G	onsemi	80	500	100 @ 100 mA, 1 V	250 @ 10 mA, 100 mA	150	100	SC-70-3	Active
MMBTA06LT1G	onsemi	80	500	100 @ 100 mA, 1 V	250 @ 10 mA, 100 mA	225	100	SOT-23-3	Active
SMMBTA06LT3G	onsemi	80	500	100 @ 100 mA, 1 V	250 @ 10 mA, 100 mA	225	100	SOT-23-3	Active
MMBTA06-7-F	Diodes Incorporated	80	500	100 @ 100 mA, 1 V	250 @ 10 mA, 100 mA	300	100	SOT-23-3	Active
MMBTA06-TP	Micro Commercial Co	80	500	100 @ 100 mA, 1 V	250 @ 10 mA, 100 mA	300	100	SOT-23-3	Active
PMBTA06,215	Nexperia USA Inc.	80	500	100 @ 100 mA, 1 V	250 @ 10 mA, 100 mA	250	100	TO-236AB	Active
MMBT6429LT1G	onsemi	45	200	500 @ 100 µA, 5 V	600 @ 5 mA, 100 mA	225	700	SOT-23-3	Active
2SD1782KT146Q	Rohm Semiconductor	80	500	120 @ 100 mA, 3 V	500 @ 50 mA, 500 mA	200	120	SMT3	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Electrical Equivalents)

The following parts are recommended as primary substitutes for the MMBTA06_L98Z due to matching electrical specifications and active product status:

MMBTA06LT1G (onsemi): Active status with extensive inventory availability (2,255,600 pcs). Identical electrical parameters with 225 mW power rating. RoHS3 compliant.
MMBTA06LT3G (onsemi): Active status with 4,934 pcs in stock. Identical electrical parameters with 225 mW power rating. RoHS3 compliant.
SMMBTA06LT1G (onsemi): Active status with 206,300 pcs in stock. Identical electrical parameters with 225 mW power rating. RoHS3 compliant.
MMBTA06-7-F (Diodes Incorporated): Active status with 215,400 pcs in stock. Identical electrical parameters with 300 mW power rating. RoHS3 compliant.
MMBTA06-TP (Micro Commercial Co): Active status with 81,996 pcs in stock. Identical electrical parameters with 300 mW power rating. RoHS3 compliant.
PMBTA06,215 (Nexperia USA Inc.): Active status with 90,200 pcs in stock. Identical electrical parameters with 250 mW power rating. AEC-Q101 automotive qualified. RoHS3 compliant.

Secondary Substitutes (Conditional Application)

SMMBTA06WT3G (onsemi): Maintains all electrical parameters but uses SC-70-3 package instead of SOT-23-3. Suitable only for designs with SC-70-3 footprint compatibility. Active status with 11,027 pcs in stock.
2SD1782KT146Q (Rohm Semiconductor): Maintains 80 V and 500 mA ratings but exhibits higher saturation voltage (500 mV vs. 250 mV) and higher collector cutoff current (500 nA vs. 100 nA). Requires circuit-level evaluation for saturation performance impact. Active status with 101,416 pcs in stock.

Not Recommended

MMBT6429LT1G (onsemi): Reduced voltage (45 V) and current (200 mA) ratings make this unsuitable for applications requiring full 80 V and 500 mA specifications.

Frequently Asked Questions (FAQ)

Q: Can MMBTA06LT1G directly replace MMBTA06_L98Z in existing designs?

A: Yes. MMBTA06LT1G maintains identical electrical specifications including 80 V breakdown voltage, 500 mA collector current, 100 MHz transition frequency, and 100 hFE gain. Both use SOT-23-3 packaging. The primary difference is product status (active vs. obsolete) and packaging format (Cut Tape & Digi-Reel vs. original packaging).

Q: What is the difference between MMBTA06LT3G and SMMBTA06LT1G?

A: Both parts share identical electrical specifications and SOT-23-3 packaging. The primary difference is the manufacturer designation prefix (MMBTA vs. SMMBTA) and packaging format (Tape & Reel). Electrical performance is equivalent.

Q: Why does SMMBTA06WT3G have lower power rating (150 mW vs. 350 mW)?

A: SMMBTA06WT3G uses SC-70-3 package instead of SOT-23-3. The SC-70-3 package has reduced thermal dissipation capability, resulting in lower maximum power rating. Electrical specifications remain identical. This part is suitable only for designs with SC-70-3 footprint compatibility.

Q: Is PMBTA06,215 suitable for automotive applications?

A: Yes. PMBTA06,215 carries AEC-Q101 automotive qualification and is RoHS3 compliant. It maintains identical electrical specifications to MMBTA06_L98Z and is suitable for automotive-grade applications.

Q: Can 2SD1782KT146Q be used as a direct replacement?

A: 2SD1782KT146Q maintains 80 V and 500 mA ratings but differs in saturation voltage (500 mV vs. 250 mV) and collector cutoff current (500 nA vs. 100 nA). Circuit-level evaluation is required to determine if these differences impact application performance, particularly in saturation-mode switching applications.

Q: What is the inventory advantage of MMBTA06LT1G?

A: MMBTA06LT1G has the highest inventory availability at 2,255,600 pcs in stock, providing superior supply chain reliability compared to other substitutes.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All active substitute parts listed carry RoHS3 compliance certification. The original MMBTA06_L98Z does not specify RoHS status due to obsolete classification.

Q: What packaging formats are available for substitutes?

A: Substitutes are available in three packaging formats: SOT-23-3 (TO-236-3, SC-59) for most parts, SC-70-3 (SOT323) for SMMBTA06WT3G, and TO-236AB for PMBTA06,215. Verify PCB footprint compatibility before selection.

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