EMH53T2R Equivalent & Substitute Parts Reference

Part Overview

The EMH53T2R from Rohm Semiconductor is a surface-mount, dual NPN pre-biased bipolar junction transistor (BJT) supplied in a SOT-563/SOT-666 (EMT6) package. The device features a collector current up to 100mA, breakdown voltage of 50V, and 4.7kΩ integrated base resistor. It is RoHS3 compliant, with a product status of active. Finding alternative models is necessary for situations involving supply chain constraints, inventory shortages, or multi-source requirements for the same functionality or footprint.

Key Parameters

Parameter	EMH53T2R
Transistor Type	2 NPN - Pre-Biased (Dual)
Current - Collector (Ic) (Max)	100mA
Voltage - Collector Emitter Breakdown (Max)	50V
Resistor - Base (R1)	4.7kOhms
DC Current Gain (hFE) (Min)	100 @ 5mA, 10V
Vce Saturation (Max)	150mV @ 500µA, 5mA
Current - Collector Cutoff (Max)	500nA (ICBO)
Frequency - Transition	250MHz
Power - Max	150mW
Mounting Type	Surface Mount
Package / Case	SOT-563, SOT-666
Supplier Device Package	EMT6
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts are identified strictly based on the following matching electrical and mechanical parameters:
Transistor Type, Maximum Collector Current, Maximum Collector-Emitter Breakdown Voltage, Base Resistor Value, Mounting Type, and Package.
These parameters must correspond to ensure functional and mechanical compatibility within the transistors, bipolar (BJT) category. Only substitutes matching or exceeding the original device's ratings and maintaining the same mounting form are included.

Key parameters for substitution:

Transistor Type
Current - Collector (Ic) (Max)
Voltage - Collector Emitter Breakdown (Max)
Resistor - Base (R1)
Mounting Type
Package / Case
RoHS Status
Product Status

Parameter Comparison

Parameter	EMH53T2R	PEMD6,115	RN1910FE,LF(CT
Transistor Type	2 NPN - Pre-Biased (Dual)	1 NPN, 1 PNP - Pre-Biased (Dual)	2 NPN - Pre-Biased (Dual)
Current - Collector (Ic) (Max)	100mA	100mA	100mA
Voltage - Collector Emitter Breakdown (Max)	50V	50V	50V
Resistor - Base (R1)	4.7kOhms	4.7kOhms	4.7kOhms
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOT-563, SOT-666	SOT-563, SOT-666	SOT-563, SOT-666
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Not For New Designs	Active

Engineering Selection Recommendations

Selection among substitute parts should be based on product status and environmental compliance only.
Active parts with matching RoHS3 compliance and relevant category certifications support ongoing use in new designs. Non-active parts with limited product status should not be used for new designs but remain suitable for legacy applications that require form, fit, and function compatibility.

Frequently Asked Questions (FAQ)

Q: What are the most critical parameters for substituting the EMH53T2R in circuit designs?
A: Key parameters include transistor type, maximum collector current, maximum collector-emitter breakdown voltage, base resistor value, package/case, mounting type, and RoHS compliance status.

Q: Can I use substitutes with different transistor types?
A: Only substitute parts with a matching transistor type and pinout are suitable for direct replacement, unless the application allows for modification.

Q: Are all packages considered equivalent?
A: Substitutes must match the given surface mount package (SOT-563, SOT-666, or EMT6/ES6 as specified) to ensure correct mechanical fit.

Q: What is the impact of product status on part selection?
A: 'Active' product status is required for new designs. 'Not For New Designs' or obsolete status indicates suitability only for legacy or maintenance applications.

Q: Is environmental compliance a mandatory criterion?
A: RoHS3 compliance must be matched for manufacturing and regulatory compatibility in most applications.

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