PEMH9,315 Pre-Biased Bipolar Transistor Equivalent & Substitute Parts

Part Overview

The PEMH9,315 is a pre-biased dual NPN bipolar transistor (BJT) manufactured by Nexperia USA Inc. in SOT-666 surface mount packaging. This component integrates two NPN transistors with internal biasing resistors, designed for 50V operation at maximum 100mA collector current and 300mW power dissipation. The part is classified as "Not For New Designs" by the manufacturer, making identification of equivalent and substitute components essential for ongoing production support, maintenance, and legacy system repairs.

Substiute Parts

PEMH9,315

Nexperia USA Inc.In Stock: 8791PEMH9,315 Datasheet

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EMH59T2R

Rohm SemiconductorIn Stock: 762EMH59T2R Datasheet

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EMH9T2R

Rohm SemiconductorIn Stock: 90386EMH9T2R Datasheet

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NSBC114YDXV6T1G

Fairchild SemiconductorIn Stock: 53129NSBC114YDXV6T1G Datasheet

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RN1907FE,LF(CT

Toshiba Semiconductor and StorageIn Stock: 1474RN1907FE,LF(CT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PEMH9,315 is determined by strict equivalence of the following critical parameters:

Mandatory Matching Parameters:

• Transistor configuration: 2 NPN - Pre-Biased (Dual)
• Maximum collector current: 100mA
• Maximum collector-emitter breakdown voltage: 50V
• Internal base resistor (R1): 10kOhms
• Internal emitter-base resistor (R2): 47kOhms
• Surface mount mounting type
• Compatible package options: SOT-563 or SOT-666

Compliance Requirements:

• ROHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)
• REACH Unaffected status

Substitute parts must satisfy all mandatory matching parameters. Variations in maximum power dissipation, DC current gain specifications, saturation voltage, cutoff current, and transition frequency do not disqualify a part from substitution, provided the part operates within the electrical constraints of the application circuit. Package supplier designation (SOT-666, EMT6, ES6, SOT-563) may differ while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts (EMH59T2R, EMH9T2R, NSBC114YDXV6T1G, and RN1907FE,LF(CT) meet the mandatory electrical and mechanical equivalence criteria for the PEMH9,315. Selection among these alternatives is based on the following factors:

ROHS3 Compliance and Environmental Standards: EMH59T2R, EMH9T2R, and RN1907FE,LF(CT) carry explicit ROHS3 compliance certification and REACH Unaffected status, matching the environmental compliance profile of the original PEMH9,315. NSBC114YDXV6T1G does not specify ROHS3 or REACH status in the provided data.

Moisture Sensitivity Level: EMH59T2R, EMH9T2R, and RN1907FE,LF(CT) are rated MSL 1 (Unlimited), identical to the PEMH9,315. NSBC114YDXV6T1G does not specify MSL rating.

Product Status and Availability: EMH59T2R, EMH9T2R, and RN1907FE,LF(CT) are classified as Active products, ensuring ongoing manufacturer support and supply chain availability. The PEMH9,315 is designated "Not For New Designs," confirming the necessity of substitution for production continuity.

Power Dissipation Margin: The PEMH9,315 specifies 300mW maximum power. EMH59T2R and EMH9T2R are rated 150mW, while RN1907FE,LF(CT) is rated 100mW. Applications requiring thermal headroom above 150mW should consider NSBC114YDXV6T1G (500mW) or verify circuit power requirements do not exceed the lower ratings of the Rohm and Toshiba alternatives.

Packaging and Supplier Designation: All substitute parts support SOT-563 and SOT-666 package options. Supplier device packages vary (EMT6 for Rohm, ES6 for Toshiba, SOT-563 for Fairchild), but all are mechanically compatible with SOT-666 footprints.

Frequently Asked Questions (FAQ)

Q: Can EMH59T2R or EMH9T2R be used as direct replacements for PEMH9,315 in existing designs?

A: Yes. Both Rohm parts satisfy all mandatory electrical parameters: dual NPN pre-biased configuration, 100mA maximum collector current, 50V breakdown voltage, 10kOhm base resistor, and 47kOhm emitter-base resistor. Both are ROHS3 compliant with MSL 1 rating. The lower maximum power rating (150mW vs. 300mW) requires verification that circuit power dissipation does not exceed 150mW under worst-case operating conditions.

Q: What is the difference between EMH59T2R and EMH9T2R?

A: Both parts are manufactured by Rohm Semiconductor with identical electrical specifications and packaging compatibility. EMH59T2R is supplied in Tape & Reel (TR) format with 699 pieces in stock. EMH9T2R is supplied in Cut Tape (CT) & Digi-Reel® format with 90,300 pieces in stock. The higher inventory of EMH9T2R may provide supply chain advantages for high-volume production.

Q: Is NSBC114YDXV6T1G suitable for applications requiring maximum power dissipation near 300mW?

A: NSBC114YDXV6T1G supports 500mW maximum power dissipation, exceeding the PEMH9,315 specification. However, NSBC114YDXV6T1G does not specify ROHS3 compliance or Moisture Sensitivity Level in the provided data. Compliance verification with procurement and quality standards is required before selection for regulated applications.

Q: Why does RN1907FE,LF(CT have a lower maximum power rating (100mW) than the original PEMH9,315 (300mW)?

A: The RN1907FE,LF(CT is rated 100mW maximum power dissipation. This specification does not disqualify it from substitution if the application circuit operates below 100mW. Circuit analysis must confirm that power dissipation under all operating conditions (including worst-case temperature and supply voltage variations) remains within the 100mW limit.

Q: Are all substitute parts available in SOT-666 packaging?

A: All substitute parts support both SOT-563 and SOT-666 package options. However, supplier device packages differ: EMH59T2R and EMH9T2R are supplied as EMT6, RN1907FE,LF(CT is supplied as ES6, and NSBC114YDXV6T1G is supplied as SOT-563. Verify PCB footprint compatibility and consult supplier datasheets for mechanical dimensions to confirm fit with existing SOT-666 land patterns.

Q: Can I use NSBC114YDXV6T1G if ROHS3 compliance is not required?

A: NSBC114YDXV6T1G meets all mandatory electrical and mechanical equivalence criteria. Selection depends on application compliance requirements. If ROHS3 certification is not mandated, NSBC114YDXV6T1G is electrically equivalent. However, EMH59T2R, EMH9T2R, and RN1907FE,LF(CT provide explicit ROHS3 and REACH compliance documentation, reducing regulatory risk.

Q: What parameters should I verify before finalizing a substitution?

A: Confirm the following: (1) Circuit power dissipation does not exceed the substitute part's maximum power rating; (2) PCB footprint accommodates the supplier device package (EMT6, ES6, or SOT-563); (3) Compliance requirements (ROHS3, REACH, MSL) align with the substitute part's certifications; (4) Thermal design accounts for any differences in power dissipation limits; (5) DC current gain and saturation voltage specifications are acceptable for the application's switching or amplification requirements.