BD13610S Equivalent & Substitute Parts

Part Overview

The BD13610S 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 status. Alternative equivalent and substitute parts are necessary to support ongoing design requirements and procurement needs for applications requiring PNP transistor functionality within the specified electrical and mechanical parameters.

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	63	@ 150mA, 2V
Power - Max	1.25	W
Operating Temperature (TJ)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-126-3	—

Substitute Part Grouping Explanation

Substitution of the BD13610S is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Transistor Type: PNP configuration required
Current - Collector (Ic) Max: 1.5 A minimum
Voltage - Collector Emitter Breakdown: 45 V minimum
Vce Saturation: 500 mV maximum @ 50mA, 500mA
Current - Collector Cutoff: 100 nA maximum
DC Current Gain (hFE): 40 minimum @ 150mA, 2V
Power - Max: 1.25 W minimum
Operating Temperature: 150°C maximum junction temperature

Mechanical Compatibility Criteria:

Mounting Type: Through Hole
Package / Case: TO-126-3 or equivalent footprint

Substitute parts are grouped into three categories based on substitution relationship:

Direct Manufacturer Equivalent: BD13610STU (Fairchild Semiconductor) — identical electrical specifications and TO-126-3 package.

Manufacturer Recommended Upgrade: BD14010STU (onsemi) — higher voltage rating (80 V) with identical current and power ratings, enabling use in higher voltage applications while maintaining full backward compatibility.

Similar Parts: BD136G (onsemi), BD136 (STMicroelectronics), and BD136-16 (STMicroelectronics) — equivalent electrical performance with minor variations in DC current gain minimum specification and package designations (TO-126 or SOT-32).

Parameter Comparison

Parameter	BD13610S (onsemi)	BD13610STU (Fairchild)	BD14010STU (onsemi)	BD136G (onsemi)	BD136 (STMicroelectronics)	BD136-16 (STMicroelectronics)
Transistor Type	PNP	PNP	PNP	PNP	PNP	PNP
Current - Collector (Ic) Max	1.5 A	1.5 A	1.5 A	1.5 A	1.5 A	1.5 A
Voltage - Collector Emitter Breakdown (Max)	45 V	45 V	80 V	45 V	45 V	45 V
Vce Saturation (Max)	500 mV	500 mV	500 mV	500 mV	500 mV	500 mV
Current - Collector Cutoff (Max)	100 nA	100 nA	100 nA	100 nA	100 nA	100 nA
DC Current Gain (hFE) Min @ Ic, Vce	63 @ 150mA, 2V	63 @ 150mA, 2V	63 @ 150mA, 2V	40 @ 150mA, 2V	40 @ 150mA, 2V	40 @ 150mA, 2V
Power - Max	1.25 W	1.25 W	1.25 W	1.25 W	1.25 W	1.25 W
Operating Temperature (TJ)	150°C	150°C	150°C	-55°C ~ 150°C	150°C	150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Supplier Device Package	TO-126-3	TO-126-3	TO-126-3	TO-126	SOT-32-3	SOT-32
Product Status	Last Time Buy	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): BD13610STU (Fairchild Semiconductor) provides an exact electrical and mechanical equivalent to the BD13610S. This part maintains all specified parameters and is currently in Active product status with 2,100 units available. Selection of this part is appropriate when exact specification matching is required and Fairchild Semiconductor sourcing is acceptable.

For Voltage Margin Enhancement: BD14010STU (onsemi) is the manufacturer-recommended upgrade option, offering 80 V collector-emitter breakdown voltage compared to the 45 V rating of the BD13610S. All other electrical parameters remain identical. This part is manufactured by onsemi (original manufacturer of BD13610S), maintains ROHS3 compliance, and is in Active product status with 2,060 units available. Selection of this part is appropriate when applications require higher voltage headroom or when sourcing from the original manufacturer is preferred.

For Extended Temperature Range: BD136G (onsemi) provides identical electrical specifications with an extended operating temperature range of -55°C to 150°C compared to the 150°C maximum of the BD13610S. This part is in Active product status with 16,536 units available, offering superior inventory availability. Selection of this part is appropriate for applications requiring operation at lower ambient temperatures.

For Alternative Package Configurations: BD136 (STMicroelectronics) and BD136-16 (STMicroelectronics) provide equivalent electrical performance in SOT-32-3 and SOT-32 packages respectively. These parts are in Active product status and suitable for applications where alternative through-hole package footprints are acceptable. DC current gain minimum specification is 40 @ 150mA, 2V, which exceeds the minimum requirement for the BD13610S.

All substitute parts listed maintain ROHS3 compliance and REACH Unaffected status, consistent with the original BD13610S specifications.

Frequently Asked Questions (FAQ)

Q: Can BD13610STU be used as a direct replacement for BD13610S? A: Yes. BD13610STU (Fairchild Semiconductor) is a direct equivalent with identical electrical specifications (45 V, 1.5 A, 1.25 W) and TO-126-3 package configuration. Both parts meet the same parameter requirements for PNP transistor applications.

Q: What is the advantage of using BD14010STU instead of BD13610S? A: BD14010STU provides a higher collector-emitter breakdown voltage rating of 80 V compared to 45 V in the BD13610S, while maintaining identical current (1.5 A) and power (1.25 W) ratings. This higher voltage rating allows operation in circuits with higher supply voltages or transient voltage conditions. All other electrical parameters remain equivalent.

Q: Are the BD136 variants (BD136G, BD136, BD136-16) compatible with BD13610S? A: Yes, with package considerations. BD136G, BD136, and BD136-16 meet or exceed all electrical requirements of the BD13610S (1.5 A, 45 V, 1.25 W, PNP configuration). However, BD136 and BD136-16 use SOT-32 package variants instead of TO-126-3, requiring PCB layout verification. BD136G uses TO-126 package, which is mechanically similar to TO-126-3.

Q: Why does BD136G have a lower DC current gain minimum (40 vs. 63)? A: DC current gain specifications vary by manufacturer and part variant. BD136G minimum of 40 @ 150mA, 2V still exceeds the functional requirements for most PNP transistor applications. The higher minimum specification of BD13610S (63) provides additional design margin but is not required for functional equivalence.

Q: What is the difference between TO-126-3 and SOT-32-3 packages? A: Both are through-hole packages with three leads (collector, base, emitter). TO-126-3 and SOT-32-3 have different physical dimensions and pin spacing. PCB footprint compatibility must be verified before substituting parts with different package designations. TO-126 and TO-126-3 are mechanically compatible variants.

Q: Is BD13610S still available for purchase? A: BD13610S is classified as Last Time Buy, indicating discontinued production. Current inventory of 2,990 units is available, but future availability is not guaranteed. BD13610STU, BD14010STU, BD136G, BD136, and BD136-16 are all in Active product status with confirmed ongoing availability.

Q: Which substitute part has the best inventory availability? A: BD136G (onsemi) has the highest inventory level with 16,536 units available, followed by BD136 (STMicroelectronics) with 15,620 units. Both parts are in Active product status and suitable for applications accepting TO-126 or SOT-32 package configurations.

Q: Are all substitute parts RoHS3 compliant? A: BD13610STU compliance status is not specified in available documentation. BD14010STU, BD136G, BD136, and BD136-16 are all confirmed ROHS3 compliant, matching the original BD13610S specification.

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