MUN5136T1 Equivalent & Substitute Parts

Part Overview

The MUN5136T1 is a pre-biased PNP bipolar junction transistor (BJT) manufactured by onsemi, designed for surface mount applications in the SC-70 (SOT-323) package. This component integrates internal biasing resistors, enabling simplified circuit design for switching and amplification applications. The MUN5136T1 is classified as obsolete product status, necessitating identification of active equivalent and substitute parts for new designs and ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with differing internal resistor values or current ratings suitable for specific application requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP - Pre-Biased	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Resistor - Base (R1)	100	kOhms
Resistor - Emitter Base (R2)	100	kOhms
DC Current Gain (hFE) Min @ Ic, Vce	80 @ 5mA, 10V	—
Vce Saturation (Max) @ Ib, Ic	250	mV @ 300µA, 10mA
Current - Collector Cutoff (Max)	500	nA
Power - Max	202	mW
Package / Case	SC-70, SOT-323	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MUN5136T1 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Transistor Type: PNP - Pre-Biased configuration
Maximum Collector Current (Ic): 100 mA minimum requirement
Collector-Emitter Breakdown Voltage: 50 V minimum
Internal Base Resistor (R1): 100 kOhms (primary matching criterion)
Internal Emitter-Base Resistor (R2): 100 kOhms (primary matching criterion)
DC Current Gain (hFE): Minimum 80 at specified test conditions
Maximum Power Dissipation: 202 mW minimum

Mechanical Compatibility Criteria:

Package Type: SC-70 or SOT-323 surface mount package
Mounting Type: Surface mount technology
Moisture Sensitivity Level: MSL 1 (Unlimited)

Substitution Categories:

Direct Equivalent (Identical Specifications): Parts maintaining all electrical parameters and internal resistor values identical to MUN5136T1, differing only in packaging format (Tape & Reel vs. bulk) or RoHS compliance status.

Functional Substitute (Modified Internal Resistors): Parts with identical Ic, Vce, and power ratings but differing internal resistor values. These substitutes alter bias point characteristics and are suitable for applications where the original bias network is not critical or where circuit design accommodates resistor value variation.

Current-Limited Substitute (Reduced Ic Rating): Parts with maximum collector current less than 100 mA. These are suitable only for applications where the circuit current requirement does not exceed the substitute part's Ic maximum rating.

Parameter Comparison

Part Number	Manufacturer	Ic Max (mA)	Vce Breakdown (V)	R1 (kOhms)	R2 (kOhms)	hFE Min @ Test	Power Max (mW)	Package	Product Status	RoHS Status
MUN5136T1	onsemi	100	50	100	100	80 @ 5mA, 10V	202	SC-70, SOT-323	Obsolete	Non-compliant
MUN5136T1G	onsemi	100	50	100	100	80 @ 5mA, 10V	202	SC-70, SOT-323	Active	ROHS3 Compliant
PDTA115TU,115	Nexperia USA Inc.	100	50	100	—	100 @ 1mA, 5V	200	SC-70, SOT-323	Active	ROHS3 Compliant
DTA114GUAT106	Rohm Semiconductor	100	50	10	—	30 @ 5mA, 5V	200	SC-70, SOT-323	Active	ROHS3 Compliant
DTA114EUAT106	Rohm Semiconductor	50	50	10	10	30 @ 5mA, 5V	200	SC-70, SOT-323	Active	ROHS3 Compliant
DTA115EUAT106	Rohm Semiconductor	20	50	100	100	82 @ 5mA, 5V	200	SC-70, SOT-323	Active	ROHS3 Compliant
DTA123EUAT106	Rohm Semiconductor	100	50	2.2	2.2	20 @ 5mA, 5V	200	SC-70, SOT-323	Active	ROHS3 Compliant
DTA124EUAT106	Rohm Semiconductor	30	50	22	22	56 @ 5mA, 5V	200	SC-70, SOT-323	Active	ROHS3 Compliant
DTA143EUAT106	Rohm Semiconductor	100	50	4.7	4.7	30 @ 10mA, 5V	200	SC-70, SOT-323	Active	ROHS3 Compliant
DTA144EUAT106	Rohm Semiconductor	30	50	47	47	68 @ 5mA, 5V	200	SC-70, SOT-323	Active	ROHS3 Compliant
PDTA114EU,115	Nexperia USA Inc.	100	50	10	10	30 @ 5mA, 5V	200	SC-70, SOT-323	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Selection:

MUN5136T1G is the primary direct equivalent, maintaining identical electrical specifications and internal resistor configuration (R1 = 100 kOhms, R2 = 100 kOhms) with 100 mA collector current rating. This part is manufactured by onsemi (original manufacturer) and carries Active product status with ROHS3 compliance, addressing the obsolescence of the original MUN5136T1. Selection of MUN5136T1G is appropriate for designs requiring no circuit modification and direct pin-for-pin replacement.

Functional Substitute Selection:

PDTA115TU,115 (Nexperia USA Inc.) provides functional substitution with identical 100 mA collector current and 50 V breakdown voltage. This part maintains the 100 kOhms base resistor value but differs in DC current gain characteristics. PDTA115TU,115 carries AEC-Q100 automotive qualification and ROHS3 compliance, suitable for applications requiring automotive-grade reliability.

DTA114GUAT106 (Rohm Semiconductor) offers 100 mA collector current with modified internal resistor network (R1 = 10 kOhms). This part is suitable for applications where the circuit design accommodates lower base resistance and altered bias characteristics. Active product status and ROHS3 compliance are confirmed.

Current-Limited Substitute Selection:

DTA114EUAT106 (Rohm Semiconductor) provides 50 mA maximum collector current with 10 kOhms internal resistors. This substitute is applicable only to circuits where the maximum required collector current does not exceed 50 mA.

DTA115EUAT106 (Rohm Semiconductor) provides 20 mA maximum collector current with 100 kOhms internal resistors matching the original bias network. This substitute is applicable only to circuits where the maximum required collector current does not exceed 20 mA.

DTA124EUAT106 and DTA144EUAT106 (Rohm Semiconductor) provide 30 mA maximum collector current with varying internal resistor values (22 kOhms and 47 kOhms respectively). These substitutes are applicable only to circuits where the maximum required collector current does not exceed 30 mA.

Compliance and Availability:

All recommended substitutes carry ROHS3 compliance status, addressing regulatory requirements for new designs. All parts maintain MSL 1 (Unlimited) moisture sensitivity classification. Inventory availability is confirmed for all active substitutes listed.

Frequently Asked Questions (FAQ)

Q: Can MUN5136T1G be used as a direct replacement for MUN5136T1?

A: Yes. MUN5136T1G is the direct equivalent manufactured by onsemi with identical electrical specifications, internal resistor values (R1 = 100 kOhms, R2 = 100 kOhms), and SC-70 (SOT-323) package. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. Non-compliant). No circuit modification is required.

Q: What is the difference between DTA114GUAT106 and DTA114EUAT106?

A: DTA114GUAT106 supports 100 mA maximum collector current with R1 = 10 kOhms base resistor. DTA114EUAT106 supports 50 mA maximum collector current with R1 = 10 kOhms and R2 = 10 kOhms emitter-base resistor. Selection depends on the circuit's maximum required collector current. Both parts are manufactured by Rohm Semiconductor in the SC-70 (SOT-323) package.

Q: Can I substitute a part with lower internal resistor values (e.g., DTA123EUAT106 with R1 = 2.2 kOhms)?

A: Substitution with lower internal resistor values alters the bias point and switching characteristics of the circuit. DTA123EUAT106 with R1 = 2.2 kOhms and R2 = 2.2 kOhms provides stronger base drive compared to MUN5136T1 (R1 = 100 kOhms, R2 = 100 kOhms). This substitute is suitable only if the circuit design accommodates the modified bias network or if the application requires increased base drive capability.

Q: Are all substitute parts available in the same SC-70 (SOT-323) package?

A: Yes. All substitute parts listed are available in SC-70 or SOT-323 surface mount packages with identical pin configurations and mounting type. Package compatibility is confirmed for all recommendations.

Q: What is the significance of the internal resistor values (R1 and R2)?

A: Internal resistor values determine the bias point and switching speed of the pre-biased transistor. R1 (base resistor) and R2 (emitter-base resistor) establish the base current and bias network. Parts with identical R1 and R2 values (e.g., MUN5136T1 and PDTA115TU,115 both with 100 kOhms) provide equivalent bias characteristics. Parts with differing resistor values alter the bias point and are classified as functional substitutes requiring circuit evaluation.

Q: Which substitute part is recommended for automotive applications?

A: PDTA115TU,115 (Nexperia USA Inc.) carries AEC-Q100 automotive qualification and is recommended for automotive applications. This part maintains 100 mA collector current, 50 V breakdown voltage, and 100 kOhms base resistor value with ROHS3 compliance.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging is supplied on continuous tape for automated assembly processes. Cut Tape (CT) packaging is supplied in individual tape segments. Both formats contain identical components; the difference is in supply format and handling for manufacturing processes. Electrical and mechanical specifications remain identical.

Q: Can I use DTA115EUAT106 (20 mA Ic) in a circuit designed for MUN5136T1 (100 mA Ic)?

A: DTA115EUAT106 can be used only if the circuit's maximum required collector current does not exceed 20 mA. If the circuit requires collector currents above 20 mA, this part will not function properly and may be damaged. Verify the circuit's actual operating current before selecting a current-limited substitute.

Q: Are all substitute parts RoHS compliant?

A: Yes. All active substitute parts listed carry ROHS3 compliance status. The original MUN5136T1 is RoHS non-compliant. Selection of any active substitute addresses RoHS compliance requirements for new designs and production.

Q: What is the difference in DC current gain (hFE) between substitute parts?

A: DC current gain varies among substitutes due to different internal resistor configurations and transistor characteristics. MUN5136T1 specifies hFE minimum of 80 @ 5mA, 10V. Substitutes range from hFE 20 (DTA123EUAT106) to hFE 100 (PDTA115TU,115) at varying test conditions. Higher hFE values indicate stronger base drive capability. Verify that the substitute's hFE meets the circuit's bias and switching requirements.

Q: Is PDTA114EU,115 suitable as a substitute for MUN5136T1?

A: PDTA114EU,115 provides 100 mA collector current and 50 V breakdown voltage but with R1 = 10 kOhms and R2 = 10 kOhms internal resistors, differing from MUN5136T1's 100 kOhms values. This part is classified as a functional substitute suitable for applications where the circuit design accommodates lower base resistance and modified bias characteristics. Active product status and ROHS3 compliance are confirmed.

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