BD136 PNP Bipolar Transistor Equivalent & Substitute Parts

Part Overview

The BD136 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 through-hole package. The device is classified as obsolete in its original onsemi configuration, necessitating identification of active equivalent and substitute parts that maintain electrical and mechanical compatibility for circuit replacement and new design applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	1.5	A
Voltage - Collector Emitter Breakdown (Max)	45	V
Vce Saturation (Max)	500	mV @ 50mA, 500mA
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) Min	40	@ 150mA, 2V
Power - Max	1.25	W
Operating Temperature	-55 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-225AA, TO-126-3	—

Substitute Part Grouping Explanation

Substitution of the BD136 is determined by strict equivalence across the following electrical and mechanical parameters:

Mandatory Equivalence Criteria:

Transistor Type: PNP
Current - Collector (Ic) Max: 1.5 A
Voltage - Collector Emitter Breakdown (Max): 45 V
Vce Saturation (Max): 500 mV @ 50mA, 500mA
Current - Collector Cutoff (Max): 100 nA
Power - Max: 1.25 W
Mounting Type: Through Hole
Package / Case: TO-225AA or TO-126-3

Acceptable Variation Parameters:

DC Current Gain (hFE) Min: 40 or higher (higher gain values remain compatible)
Operating Temperature: Maximum junction temperature of 150°C or higher
Product Status: Active or Obsolete (both acceptable for substitution)
Packaging Format: Bulk or Tube (both acceptable for component sourcing)

Substitute parts are grouped into two categories: direct manufacturer equivalents from onsemi and cross-manufacturer alternatives from Fairchild Semiconductor and STMicroelectronics that meet all mandatory electrical and mechanical criteria.

Parameter Comparison

Part Number	Manufacturer	Ic (Max)	Vce Breakdown (Max)	Vce Sat (Max)	hFE (Min)	Power (Max)	Package	Status
BD136	onsemi	1.5 A	45 V	500 mV	40	1.25 W	TO-126	Obsolete
BD136G	onsemi	1.5 A	45 V	500 mV	40	1.25 W	TO-126	Active
BD136	STMicroelectronics	1.5 A	45 V	500 mV	40	1.25 W	SOT-32-3	Active
BD136-16	STMicroelectronics	1.5 A	45 V	500 mV	40	1.25 W	SOT-32	Active
BD13610S	Fairchild Semiconductor	1.5 A	45 V	500 mV	63	1.25 W	TO-126-3	Active
BD13610STU	Fairchild Semiconductor	1.5 A	45 V	500 mV	63	1.25 W	TO-126-3	Active
BD13616S	Fairchild Semiconductor	1.5 A	45 V	500 mV	100	1.25 W	TO-126-3	Active
BD13616STU	Fairchild Semiconductor	1.5 A	45 V	500 mV	100	1.25 W	TO-126-3	Active

Engineering Selection Recommendations

Primary Recommendation: BD136G (onsemi)

BD136G is the direct active equivalent from the original manufacturer onsemi. It maintains identical electrical specifications to the obsolete BD136 and carries ROHS3 compliance certification. This part is the preferred substitution path for applications requiring manufacturer continuity and regulatory compliance.

Secondary Recommendation: BD136 (STMicroelectronics)

The STMicroelectronics BD136 in SOT-32-3 package provides electrical equivalence with ROHS3 compliance and active product status. Package geometry differs from the original TO-126 configuration; PCB layout modification is required for mechanical accommodation.

Alternative Recommendation: BD13610STU or BD13616STU (Fairchild Semiconductor)

Fairchild Semiconductor parts BD13610STU and BD13616STU provide electrical equivalence in TO-126-3 package format with active product status. BD13616STU offers elevated DC current gain (hFE Min = 100) compared to the original specification (hFE Min = 40), providing enhanced base drive efficiency while maintaining all other electrical parameters within specification.

Compliance Considerations:

onsemi BD136G: ROHS3 Compliant
STMicroelectronics BD136 and BD136-16: ROHS3 Compliant
Fairchild Semiconductor parts: Compliance status not specified in provided data

All listed substitute parts carry REACH Unaffected status and EAR99 export classification identical to the original BD136.

Frequently Asked Questions (FAQ)

Q: Can BD136G directly replace the obsolete onsemi BD136 without circuit modification?

A: Yes. BD136G is the direct active equivalent from onsemi with identical electrical specifications (Ic, Vce, hFE, power rating) and package configuration (TO-126). No circuit modification is required.

Q: What is the difference between BD13610S and BD13616S from Fairchild Semiconductor?

A: Both parts are electrically equivalent in all parameters except DC current gain. BD13610S specifies hFE Min = 63 @ 150mA, 2V, while BD13616S specifies hFE Min = 100 @ 150mA, 2V. Higher gain in BD13616S reduces base drive current requirements for equivalent collector current operation.

Q: Are STMicroelectronics BD136 variants (SOT-32 package) pin-compatible with the original TO-126 package?

A: No. SOT-32 and TO-126 packages have different physical geometries and pin configurations. PCB layout modification is required for mechanical accommodation. Electrical functionality remains equivalent.

Q: Can I use BD13616STU in place of BD136 if my circuit requires lower base drive current?

A: Yes. BD13616STU provides the same electrical ratings as BD136 with higher DC current gain (hFE Min = 100 versus 40). This elevated gain reduces base drive current requirements while maintaining all other specifications within the original design envelope.

Q: What is the inventory status for substitute parts?

A: BD136G (onsemi): 16,536 units. BD13610STU (Fairchild): 2,100 units. BD13616STU (Fairchild): 17,385 units. BD136 (STMicroelectronics): 15,620 units. BD136-16 (STMicroelectronics): 4,137 units.

Q: Are all substitute parts RoHS compliant?

A: BD136G and STMicroelectronics variants (BD136, BD136-16) are ROHS3 compliant. Fairchild Semiconductor parts do not specify RoHS compliance status in provided documentation.

Q: Can I mix different manufacturers' parts in the same circuit board assembly?

A: Yes. All listed substitute parts meet identical electrical specifications for Ic, Vce, saturation voltage, and power rating. Cross-manufacturer substitution is electrically valid. Package format must be consistent with PCB layout design.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message