DZT851-13 Equivalent & Substitute Parts

Part Overview

The DZT851-13 is an NPN bipolar junction transistor manufactured by Diodes Incorporated, rated for 60 V collector-emitter breakdown voltage and 6 A maximum collector current in a surface mount SOT-223-3 package. This device is classified as obsolete, with 15,363 units currently in stock. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for new designs and ongoing production requirements. Substitute parts maintain electrical compatibility while offering improved availability and extended product lifecycle support.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	60	V
Current - Collector (Ic) (Max)	6	A
Power - Max	1	W
Frequency - Transition	130	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-223-3	—
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 2A, 1V	—
Vce Saturation (Max) @ Ib, Ic	375mV @ 300mA, 6A	—

Substitute Part Grouping Explanation

Substitution of the DZT851-13 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor type: NPN
Voltage rating: 60 V minimum collector-emitter breakdown voltage
Current rating: 6 A maximum collector current
Package: SOT-223-3 surface mount configuration
Operating temperature range: -55°C to 150°C minimum
Transition frequency: 130 MHz minimum
DC current gain (hFE): 100 minimum at specified conditions

Substitution Categories:

Direct Equivalents (Diodes Incorporated): Parts FZT851TA, ZX5T851GTA, and ZXTN2010GTA maintain all critical electrical parameters with identical voltage and current ratings. These devices are active products with enhanced power dissipation (3 W versus 1 W), providing superior thermal performance while maintaining backward compatibility.

Functional Alternatives (Reduced Current Rating): Parts from STMicroelectronics (2STN1360) and Nexperia (BCP55 series) provide 60 V voltage rating but with reduced maximum collector current (1 A to 3 A). These substitutes are suitable for applications where the full 6 A capability is not required.

Compliance and Availability: All substitute parts maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and REACH unaffected status, ensuring regulatory compatibility with the original device.

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max) [A]	Vce(br) [V]	Power [W]	Frequency [MHz]	hFE (Min)	Package
DZT851-13	Diodes Incorporated	Obsolete	6	60	1	130	100	SOT-223-3
FZT851TA	Diodes Incorporated	Active	6	60	3	130	100	SOT-223-3
ZX5T851GTA	Diodes Incorporated	Active	6	60	3	130	100	SOT-223-3
ZXTN2010GTA	Diodes Incorporated	Active	6	60	3	130	100	SOT-223-3
2STN1360	STMicroelectronics	Active	3	60	1.6	130	160	SOT-223
BCP55	onsemi	Active	1.5	60	1.5	—	40	SOT-223-4
BCP55,115	Nexperia USA Inc.	Active	1	60	1.35	180	63	SOT-223
BCP55,135	Nexperia USA Inc.	Active	1	60	1.35	180	63	SOT-223
BCP55-10,115	Nexperia USA Inc.	Active	1	60	1.35	180	63	SOT-223
BCP55-16,115	Nexperia USA Inc.	Active	1	60	1.35	180	100	SOT-223
BCP55H6327XTSA1	Infineon Technologies	Obsolete	1	60	2	100	40	SOT-223-4

Engineering Selection Recommendations

For Direct Replacement (Full Current Capability):

Select FZT851TA, ZX5T851GTA, or ZXTN2010GTA from Diodes Incorporated when the application requires the full 6 A collector current rating. These parts are active products with identical voltage and current specifications to the DZT851-13. The increased power dissipation rating (3 W versus 1 W) provides thermal margin without requiring circuit modifications. All three devices maintain ROHS3 compliance and MSL Level 1 rating.

For Current-Limited Applications (3 A Maximum):

The 2STN1360 from STMicroelectronics is suitable for applications where collector current does not exceed 3 A. This part maintains the 60 V voltage rating and 130 MHz transition frequency. The device is active and ROHS3 compliant.

For Current-Limited Applications (1 A Maximum):

The BCP55 series from Nexperia USA Inc. and onsemi provides 60 V voltage rating with maximum collector current of 1 A to 1.5 A. These parts are active products with ROHS3 compliance. The BCP55-16,115 variant offers DC current gain of 100, matching the original device specification. Nexperia variants provide 180 MHz transition frequency, exceeding the original 130 MHz specification.

Compliance Verification:

All recommended substitute parts maintain ROHS3 compliance, MSL Level 1 moisture sensitivity rating, and REACH unaffected status, ensuring regulatory alignment with the original DZT851-13 device.

Frequently Asked Questions (FAQ)

Q: Can FZT851TA be used as a direct replacement for DZT851-13?

A: Yes. FZT851TA maintains identical electrical specifications for voltage (60 V), current (6 A), and frequency (130 MHz). The increased power rating (3 W versus 1 W) provides additional thermal capability. Both devices use SOT-223-3 packaging and are ROHS3 compliant.

Q: What is the primary difference between DZT851-13 and the Diodes Incorporated substitutes?

A: The DZT851-13 is obsolete with 1 W power rating. FZT851TA, ZX5T851GTA, and ZXTN2010GTA are active products with 3 W power rating. All maintain identical voltage, current, and frequency specifications.

Q: Can BCP55 series parts replace DZT851-13 in all applications?

A: No. BCP55 series parts are limited to 1 A to 1.5 A maximum collector current, compared to 6 A for the DZT851-13. These substitutes are suitable only for applications where collector current does not exceed 1.5 A.

Q: Are there package compatibility issues between DZT851-13 and substitute parts?

A: The DZT851-13 uses SOT-223-3 packaging. FZT851TA, ZX5T851GTA, and ZXTN2010GTA use identical SOT-223-3 packaging. BCP55 series parts use SOT-223 or SOT-223-4 variants, which have different pin configurations. Verify PCB layout compatibility before substitution.

Q: What is the operating temperature range for substitute parts?

A: FZT851TA, ZX5T851GTA, and ZXTN2010GTA operate from -55°C to 150°C, matching the DZT851-13. BCP55 series parts operate to 150°C maximum junction temperature. Verify minimum operating temperature requirements for your application.

Q: Do all substitute parts have the same DC current gain specification?

A: No. DZT851-13 specifies hFE minimum of 100 at 2A, 1V. FZT851TA, ZX5T851GTA, and ZXTN2010GTA match this specification. 2STN1360 specifies hFE minimum of 160 at 1A, 2V. BCP55 variants range from 40 to 100 depending on the specific part number.

Q: Which substitute part offers the best thermal performance?

A: FZT851TA, ZX5T851GTA, and ZXTN2010GTA all provide 3 W power dissipation, compared to 1 W for the original DZT851-13. These parts offer superior thermal performance while maintaining full electrical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 moisture sensitivity rating, ensuring regulatory compatibility with the original device.

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