1N2971B Equivalent & Substitute Parts Reference

Part Overview

The 1N2971B is a Zener diode manufactured by Microchip Technology in the Diodes, Zener category. It is provided in chassis, stud mount packaging (DO-213AA/DO-4) with a nominal Zener voltage of 7.5 V, a maximum power rating of 10 W, and a tolerance of ±5%. This part is currently active but is RoHS non-compliant. Selection of alternative models is necessary to support cases where specific military or qualification requirements arise, or to address procurement needs for identical electrical and mechanical characteristics.

Key Parameters

Manufacturer Part Number	Manufacturer	Category	Packaging	Description	Voltage - Zener (Nom) (Vz)	Tolerance	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Product Status	Series	Moisture Sensitivity Level (MSL)	REACH Status	ECCN	HTSUS
1N2971B	Microchip Technology	Diodes, Zener	Bulk	DIODE ZENER 7.5V 10W DO213AA	7.5 V	±5%	10 W	1.3 Ohms	100 µA @ 5.7 V	1.5 V @ 2 A	-65°C ~ 175°C	Chassis, Stud Mount	DO-203AA, DO-4, Stud	DO-213AA	RoHS non-compliant	Active	-	1 (Unlimited)	REACH Unaffected	EAR99	8541.10.0050

Substitute Part Grouping Explanation

Substitution of the 1N2971B is based strictly on the following key parameters: Zener voltage (7.5 V), tolerance (±5%), maximum power (10 W), maximum impedance (1.3 Ohms), reverse leakage current (@ 100 µA @ 5.7 V), forward voltage (@ 1.5 V @ 2 A), operating temperature (-65°C ~ 175°C), mounting type (Stud Mount), package/case (DO-203AA, DO-4, Stud), and supplier device package (DO-213AA). Substitute parts listed possess identical electrical and mechanical specifications, enabling direct replacement without deviation from published characteristics.

Parameter Comparison

Parameter	1N2971B	JANTX1N2971RB
Manufacturer	Microchip Technology	Microchip Technology
Category	Diodes, Zener	Diodes, Zener
Packaging	Bulk	Bulk
Voltage - Zener (Nom) (Vz)	7.5 V	7.5 V
Tolerance	±5%	±5%
Power - Max	10 W	10 W
Impedance (Max) (Zzt)	1.3 Ohms	1.3 Ohms
Current - Reverse Leakage @ Vr	100 µA @ 5.7 V	100 µA @ 5.7 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 2 A	1.5 V @ 2 A
Operating Temperature	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Chassis, Stud Mount	Stud Mount
Package / Case	DO-203AA, DO-4, Stud	DO-203AA, DO-4, Stud
Supplier Device Package	DO-213AA	DO-213AA (DO-4)
RoHS Status	RoHS non-compliant	RoHS non-compliant
Product Status	Active	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050

Engineering Selection Recommendations

Both 1N2971B and JANTX1N2971RB are active products with identical electrical and mechanical parameters, and both are RoHS non-compliant. JANTX1N2971RB provides additional Military grade and MIL-PRF-19500/124 qualification, which may be required for certain regulated applications. For applications requiring military qualification or compliance with MIL-PRF-19500/124, select JANTX1N2971RB. For general applications, either 1N2971B or JANTX1N2971RB can be selected, provided the RoHS status and qualification requirements align with project specifications.

Frequently Asked Questions (FAQ)

Q1: Can the JANTX1N2971RB directly replace the 1N2971B in all applications?
A1: JANTX1N2971RB matches all specified electrical and mechanical parameters and can be used as a direct substitute where identical performance and chassis mounting are required.

Q2: Do both parts use the same package and mounting format?
A2: Yes, both 1N2971B and JANTX1N2971RB utilize the DO-203AA, DO-4, Stud package and DO-213AA supplier device package, suitable for stud mount applications.

Q3: Is there any difference in qualification or grade between these parts?
A3: JANTX1N2971RB is qualified to MIL-PRF-19500/124 and has a military grade, while 1N2971B does not specify these qualifications.

Q4: How does RoHS compliance affect selection between these diodes?
A4: Both parts are RoHS non-compliant; selection should consider project or regulatory requirements regarding hazardous substances.

Q5: Are there variations in operating temperature or electrical performance between the two?
A5: No, both parts have an operating temperature range of -65°C to 175°C and identical electrical ratings.

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