BD13616STU Equivalent & Substitute Parts

Part Overview

The BD13616STU is a PNP bipolar junction transistor manufactured by onsemi, rated for 45 V collector-emitter breakdown voltage and 1.5 A maximum collector current in a TO-126-3 through-hole package. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. Equivalent and substitute parts are necessary to ensure design continuity and long-term component sourcing for applications requiring PNP transistor functionality within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	45	V
Current - Collector (Ic) (Max)	1.5	A
Power - Max	1.25	W
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	—
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 150mA, 2V	—
Mounting Type	Through Hole	—
Package / Case	TO-126-3	—
Operating Temperature (Max)	150	°C

Substitute Part Grouping Explanation

Substitution of the BD13616STU is determined by electrical and mechanical compatibility across the following critical parameters:

Primary Substitution Criteria:

Transistor Type: PNP (required)
Voltage - Collector Emitter Breakdown (Max): 45 V or greater
Current - Collector (Ic) (Max): 1.5 A or greater
Power - Max: 1.25 W or greater
Vce Saturation (Max): 500 mV or lower @ specified base and collector currents
DC Current Gain (hFE) (Min): 100 or greater @ 150 mA, 2 V
Mounting Type: Through Hole
Package / Case: TO-126-3 or compatible through-hole package

Substitution Categories:

Direct Equivalents maintain identical electrical specifications and packaging, differing only in manufacturer or packaging format (tube vs. bulk).

Similar Parts meet or exceed all critical electrical parameters but may differ in secondary characteristics such as transition frequency, power dissipation capability, or DC current gain, provided the minimum specifications are satisfied.

Upgrade Parts exceed the electrical specifications of the BD13616STU while maintaining mechanical compatibility, suitable for applications requiring enhanced performance margins.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) [A]	Vce Breakdown (Max) [V]	Power (Max) [W]	hFE (Min) @ Ic, Vce	Package	Product Status
BD13616STU	onsemi	1.5	45	1.25	100 @ 150mA, 2V	TO-126-3	Last Time Buy
BD13616S	Fairchild Semiconductor	1.5	45	1.25	100 @ 150mA, 2V	TO-126-3	Active
BD136G	onsemi	1.5	45	1.25	40 @ 150mA, 2V	TO-126	Active
BD136-16	STMicroelectronics	1.5	45	1.25	40 @ 150mA, 2V	SOT-32	Active
BD136	STMicroelectronics	1.5	45	1.25	40 @ 2V, 150mA	SOT-32-3	Active
BD234G	onsemi	2	45	25	25 @ 1A, 2V	TO-126	Last Time Buy
BD438	STMicroelectronics	4	45	36	30 @ 10mA, 5V	SOT-32-3	Active
2N4918G	onsemi	1	40	30	30 @ 500mA, 1V	TO-126	Last Time Buy

Engineering Selection Recommendations

Direct Equivalent Selection:

BD13616S (Fairchild Semiconductor) is the primary direct equivalent, maintaining identical electrical specifications and TO-126-3 packaging. This part is in Active product status with 2100 units in stock, providing immediate availability and long-term sourcing stability compared to the Last Time Buy status of BD13616STU.

Active Status Alternatives:

BD136G (onsemi) and BD136-16 (STMicroelectronics) are Active status parts meeting the 45 V, 1.5 A electrical requirements. BD136G is supplied in TO-126 packaging with 16536 units in stock. BD136-16 is supplied in SOT-32 packaging with 4137 units in stock. Both parts exhibit lower minimum DC current gain (40 vs. 100), which remains acceptable for applications not requiring the higher gain specification of BD13616STU.

BD136 (STMicroelectronics) is an Active status part in SOT-32-3 packaging with 15620 units in stock, offering equivalent electrical performance to BD136-16 with extended operating temperature range (-55°C to 150°C).

Upgrade Selection:

BD438 (STMicroelectronics) is an Active status upgrade part rated for 4 A collector current and 36 W power dissipation at 45 V breakdown voltage. This part is suitable for applications requiring enhanced current handling and thermal performance margins while maintaining mechanical compatibility through SOT-32-3 packaging.

Compliance Considerations:

All substitute parts listed are RoHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to BD13616STU. Moisture sensitivity levels vary; parts with MSL 1 (Unlimited) designation offer superior moisture tolerance for storage and handling.

Frequently Asked Questions (FAQ)

Q: Can BD13616S replace BD13616STU directly?

A: Yes. BD13616S is a direct equivalent with identical electrical specifications (45 V, 1.5 A, 1.25 W, hFE 100 minimum) and TO-126-3 packaging. The primary difference is manufacturer (Fairchild Semiconductor vs. onsemi) and packaging format (bulk vs. tube). BD13616S is in Active product status with higher inventory availability.

Q: What is the difference between BD136G and BD13616STU?

A: BD136G meets the 45 V, 1.5 A electrical requirements but specifies a minimum DC current gain of 40 at 150 mA, 2 V, compared to 100 for BD13616STU. This lower gain specification is acceptable for most applications. BD136G is supplied in TO-126 packaging and is in Active product status.

Q: Can I use BD438 as a substitute?

A: BD438 is an upgrade part suitable for applications requiring higher current capacity (4 A vs. 1.5 A) and power dissipation (36 W vs. 1.25 W) at the same 45 V breakdown voltage. Mechanical compatibility is maintained through SOT-32-3 through-hole packaging. Use BD438 only when enhanced performance margins are required.

Q: Why is 2N4918G listed as a similar part if it has lower ratings?

A: 2N4918G is listed as a similar part but does not qualify as a direct substitute due to reduced electrical specifications: 40 V breakdown voltage (vs. 45 V), 1 A collector current (vs. 1.5 A), and 30 minimum DC current gain (vs. 100). This part is suitable only for applications with relaxed electrical requirements.

Q: What packaging differences exist among the substitute parts?

A: BD13616STU and BD13616S are supplied in TO-126-3 packaging. BD136G is supplied in TO-126 packaging. BD136-16 and BD136 are supplied in SOT-32 and SOT-32-3 packaging respectively. BD234G and 2N4918G are supplied in TO-126 packaging. BD438 is supplied in SOT-32-3 packaging. All are through-hole mount types suitable for PCB insertion.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to BD13616STU.

Q: Which substitute offers the best long-term availability?

A: BD13616S (Fairchild Semiconductor) and BD136 (STMicroelectronics) are both in Active product status with substantial inventory levels (2100 and 15620 units respectively), providing superior long-term sourcing stability compared to Last Time Buy parts.

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