2STA1962 PNP Bipolar Transistor Equivalent & Substitute Parts

Part Overview

The STMicroelectronics 2STA1962 is a PNP bipolar junction transistor rated for 230 V collector-emitter breakdown voltage and 15 A maximum collector current in a TO-3P through-hole package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and production continuity. The 2STA1962 operates at a maximum junction temperature of 150°C with 150 W power dissipation capability and 30 MHz transition frequency, making it suitable for high-power switching and amplification applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Max)	15	A
Collector-Emitter Breakdown Voltage (Max)	230	V
Power Dissipation (Max)	150	W
Transition Frequency	30	MHz
DC Current Gain (hFE Min)	80	@ 1A, 5V
Vce Saturation (Max)	3	V @ 800mA, 8A
Collector Cutoff Current (Max)	5	µA
Operating Temperature (Max)	150	°C
Package Type	TO-3P	—
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution of the 2STA1962 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor type: PNP configuration
Collector current rating: minimum 15 A
Collector-emitter breakdown voltage: minimum 230 V
Power dissipation: minimum 150 W
Transition frequency: 30 MHz
DC current gain (hFE): minimum 80 @ 1A, 5V
Package: TO-3P through-hole configuration
Vce saturation and collector cutoff current characteristics within acceptable operating margins

Substitution Categories:

Direct Manufacturer Equivalent: Parts with identical electrical specifications and package designation from alternative manufacturers, maintaining full pin and functional compatibility.

Upgrade Substitutes: Parts exceeding the 2STA1962 specifications in voltage rating, power dissipation, or temperature range while maintaining collector current and frequency requirements. These provide enhanced performance margins.

Parametric Equivalents: Parts with matching core electrical parameters (voltage, current, frequency, gain) and identical package type, suitable for direct replacement in circuit applications.

Similar Alternatives: Parts with comparable but not identical specifications, including variations in collector current or power rating, requiring circuit-level evaluation for specific applications.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) A	Vce(br) V	Power W	hFE (Min)	Vce Sat V	Icbo µA	Temp °C	Status
2STA1962	STMicroelectronics	15	230	150	80 @ 1A, 5V	3 @ 800mA, 8A	5	150	Obsolete
2SA1962-O(Q)	Toshiba Semiconductor and Storage	15	230	130	80 @ 1A, 5V	3 @ 800mA, 8A	5	150	Active
NJW0302G	onsemi	15	250	150	75 @ 3A, 5V	1 @ 500mA, 5A	10	-65 to 150	Active
2SA1962OTU	onsemi	17	250	130	80 @ 1A, 5V	3 @ 800mA, 8A	5	-55 to 150	Obsolete
FJA4213RTU	onsemi	17	250	130	55 @ 1A, 5V	3 @ 800mA, 8A	5	150	Obsolete
NJW1302G	onsemi	15	250	200	75 @ 3A, 5V	0.6 @ 800mA, 8A	50	-65 to 150	Active
2SA1943N(S1,E,S)	Toshiba Semiconductor and Storage	15	230	150	80 @ 1A, 5V	3 @ 800mA, 8A	5	150	Active

Engineering Selection Recommendations

Primary Recommendation: 2SA1943N(S1,E,S)

The Toshiba 2SA1943N(S1,E,S) is the preferred substitute for the obsolete 2STA1962. This part maintains identical electrical specifications across all critical parameters: 15 A collector current, 230 V breakdown voltage, 150 W power dissipation, 80 hFE minimum, and 30 MHz transition frequency. The device is currently in active production status, ensuring long-term availability. Both parts share identical TO-3P package configuration and through-hole mounting type. RoHS3 compliance and REACH unaffected status are maintained. This substitution requires no circuit modifications.

Secondary Recommendation: 2SA1962-O(Q)

The Toshiba 2SA1962-O(Q) provides direct manufacturer equivalence with active product status. Electrical parameters match the original 2STA1962 with the exception of reduced power dissipation (130 W versus 150 W). This 20 W reduction in maximum power rating requires thermal design verification in applications operating near the 150 W limit. All other specifications, including voltage, current, gain, and package type, are identical. RoHS compliance is maintained.

Upgrade Option: NJW0302G

The onsemi NJW0302G represents an upgrade substitute with enhanced specifications. This device exceeds the 2STA1962 in collector-emitter breakdown voltage (250 V versus 230 V) and maintains equivalent power dissipation (150 W). The extended operating temperature range (-65°C to 150°C) provides improved thermal margin compared to the original 150°C maximum. Collector current and transition frequency remain at 15 A and 30 MHz respectively. The device is in active production with RoHS3 compliance. Vce saturation is improved (1 V versus 3 V), reducing power loss in saturation mode. This substitution is suitable for applications requiring enhanced voltage margin or extended temperature operation.

Alternative Option: NJW1302G

The onsemi NJW1302G offers the highest power dissipation rating (200 W) among available substitutes, providing 50 W additional thermal headroom. This device maintains 15 A collector current and 250 V breakdown voltage with active product status. The extended temperature range (-65°C to 150°C) and improved Vce saturation (0.6 V) deliver superior performance characteristics. Selection of this part is appropriate for thermally constrained applications or designs requiring maximum power handling capability.

Obsolete Alternatives: 2SA1962OTU and FJA4213RTU

The onsemi parts 2SA1962OTU and FJA4213RTU are classified as obsolete and should not be selected for new designs or production continuity planning. While these devices provide higher collector current ratings (17 A), their discontinued status creates supply chain risk. FJA4213RTU exhibits reduced DC current gain (55 hFE minimum), further limiting its suitability as a substitute.

Frequently Asked Questions (FAQ)

Q: Can the 2SA1962 be directly replaced with the 2SA1943N(S1,E,S)?

A: Yes. The 2SA1943N(S1,E,S) is a direct parametric equivalent with identical electrical specifications and TO-3P package configuration. No circuit modifications are required. The primary advantage is active production status, ensuring supply availability.

Q: What is the difference between the 2SA1962-O(Q) and the original 2STA1962?

A: The 2SA1962-O(Q) maintains all electrical specifications except maximum power dissipation, which is reduced from 150 W to 130 W. Applications operating below 130 W can use this substitute without modification. Designs requiring the full 150 W rating should select NJW0302G or NJW1302G.

Q: Why is NJW0302G classified as an upgrade substitute?

A: The NJW0302G exceeds the 2STA1962 specifications in three areas: collector-emitter breakdown voltage (250 V versus 230 V), operating temperature range (-65°C to 150°C versus 150°C maximum), and Vce saturation performance (1 V versus 3 V). These enhancements provide improved reliability margins and reduced power loss in saturation mode while maintaining equivalent current and frequency ratings.

Q: Is the NJW1302G suitable for all 2STA1962 applications?

A: The NJW1302G is suitable for applications where the 2STA1962 specifications are met or exceeded. The 200 W power rating provides additional thermal margin, and the improved Vce saturation (0.6 V) reduces power dissipation. The extended temperature range supports operation in wider environmental conditions. Pin configuration and package type are identical, enabling direct substitution.

Q: What are the package compatibility considerations?

A: All substitute parts listed maintain the TO-3P through-hole package configuration. Physical dimensions and pin assignments are compatible with the original 2STA1962 footprint. No PCB modifications are required for mechanical installation.

Q: Why should obsolete parts like 2SA1962OTU and FJA4213RTU be avoided?

A: Obsolete parts present supply chain risk and limit long-term production continuity. Active production parts (2SA1943N(S1,E,S), 2SA1962-O(Q), NJW0302G, NJW1302G) ensure component availability for current and future manufacturing requirements. Additionally, FJA4213RTU exhibits reduced DC current gain (55 hFE), limiting performance in gain-dependent applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and REACH unaffected status, matching the environmental compliance profile of the original 2STA1962.

Q: What is the significance of DC current gain (hFE) variations among substitutes?

A: DC current gain determines base current requirements for a given collector current. The 2STA1962 specifies 80 hFE minimum at 1A, 5V. Most substitutes maintain this specification. NJW0302G and NJW1302G specify 75 hFE at 3A, 5V, which is acceptable for applications where base drive is calculated at higher collector currents. FJA4213RTU specifies only 55 hFE, requiring increased base current and is not recommended.

Q: Can the 2STA1962 be used in new designs?

A: No. The 2STA1962 is obsolete and should not be specified for new designs. The 2SA1943N(S1,E,S) is the recommended substitute for new development, providing identical specifications with active production status and long-term availability assurance.

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