1N827-1 Equivalent & Substitute Parts

Part Overview

The 1N827-1 is a Zener diode manufactured by Microchip Technology, rated at 6.2 V nominal voltage with 500 mW maximum power dissipation in a DO-35 (DO-204AH) through-hole package. This component is classified as Active product status and is RoHS non-compliant. Equivalent and substitute parts are identified based on matching electrical characteristics, package compatibility, and operational parameters to ensure functional interchangeability in circuit applications requiring 6.2 V Zener regulation.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	6.2	V
Tolerance	±5%	%
Power - Max	500	mW
Impedance (Max)	15	Ohms
Current - Reverse Leakage @ Vr	2	µA @ 3 V
Operating Temperature	-55 to 175	°C
Mounting Type	Through Hole	-
Package / Case	DO-204AH, DO-35, Axial	-

Substitute Part Grouping Explanation

Substitute parts for the 1N827-1 are classified into three categories based on electrical and mechanical compatibility:

Parametric Equivalents share identical electrical specifications: 6.2 V nominal voltage, ±5% tolerance, 500 mW maximum power, 15 Ohms maximum impedance, 2 µA reverse leakage current at 3 V, and -55°C to 175°C operating temperature range. These parts are functionally interchangeable in all applications where the 1N827-1 is specified. Parametric equivalents include 1N821-1, 1N829, and JANTX1N827-1.

Direct Manufacturer Substitute 1N827A meets the same voltage and tolerance specifications but operates at reduced maximum power (400 mW versus 500 mW). This part is suitable for applications where power dissipation does not exceed 400 mW.

Similar Parts 1N5234B and 1N5234BTR maintain the 6.2 V voltage and 500 mW power rating but differ in impedance (7 Ohms versus 15 Ohms maximum) and reverse leakage current (5 µA @ 4 V versus 2 µA @ 3 V). These parts are functionally compatible for general 6.2 V Zener applications but exhibit different dynamic impedance characteristics.

Parameter Comparison

Part Number	Manufacturer	Voltage - Zener (Nom)	Tolerance	Power - Max	Impedance (Max)	Current - Reverse Leakage @ Vr	Operating Temperature	Package	RoHS Status
1N827-1	Microchip Technology	6.2 V	±5%	500 mW	15 Ohms	2 µA @ 3 V	-55 to 175°C	DO-35	RoHS non-compliant
1N821-1	Microchip Technology	6.2 V	±5%	500 mW	15 Ohms	2 µA @ 3 V	-55 to 175°C	DO-35	RoHS non-compliant
1N829	Microchip Technology	6.2 V	±5%	500 mW	15 Ohms	2 µA @ 3 V	-55 to 175°C	DO-35	RoHS non-compliant
JANTX1N827-1	Microchip Technology	6.2 V	±5%	500 mW	15 Ohms	2 µA @ 3 V	-55 to 175°C	DO-35	RoHS non-compliant
1N827A	Solid State Inc.	6.2 V	±5%	400 mW	15 Ohms	Not specified	-55 to 175°C	DO-35	ROHS3 Compliant
1N5234B	Microchip Technology	6.2 V	±5%	500 mW	7 Ohms	5 µA @ 4 V	-65 to 175°C	DO-35	RoHS non-compliant
1N5234BTR	Fairchild Semiconductor	6.2 V	±5%	500 mW	7 Ohms	5 µA @ 4 V	-65 to 200°C	DO-35	Not specified

Engineering Selection Recommendations

For Direct Replacement: Parts 1N821-1, 1N829, and JANTX1N827-1 provide complete electrical and thermal equivalence to the 1N827-1. These parts maintain identical voltage regulation characteristics, impedance, and leakage current specifications. JANTX1N827-1 is qualified to MIL-PRF-19500/159 and carries military-grade designation, suitable for applications requiring military specification compliance.

For RoHS Compliance Applications: The 1N827A manufactured by Solid State Inc. is ROHS3 compliant and maintains the same voltage, tolerance, and impedance specifications. The reduced power rating (400 mW) requires circuit analysis to confirm power dissipation does not exceed this limit.

For Extended Temperature Range: The 1N5234BTR extends the upper operating temperature to 200°C and lower temperature to -65°C compared to the 1N827-1 baseline of -55°C to 175°C. This part is suitable for applications requiring enhanced thermal performance, though impedance and leakage current differ from the primary specification.

For General 6.2 V Zener Applications: Parts 1N5234B and 1N5234BTR are functionally compatible for voltage regulation at 6.2 V with 500 mW power rating. The lower impedance (7 Ohms) provides improved voltage stability under load variations compared to the 15 Ohms specification of the 1N827-1.

Frequently Asked Questions (FAQ)

Q: Can 1N821-1 be used as a direct replacement for 1N827-1?

A: Yes. The 1N821-1 is a parametric equivalent with identical voltage (6.2 V), tolerance (±5%), power rating (500 mW), impedance (15 Ohms), reverse leakage current (2 µA @ 3 V), and operating temperature range (-55°C to 175°C). Both are manufactured by Microchip Technology in DO-35 package.

Q: What is the difference between 1N827-1 and 1N827A?

A: The 1N827A has a reduced maximum power rating of 400 mW compared to 500 mW for the 1N827-1. Both maintain 6.2 V nominal voltage, ±5% tolerance, and 15 Ohms impedance. The 1N827A is ROHS3 compliant while the 1N827-1 is RoHS non-compliant. Selection depends on power dissipation requirements and RoHS compliance mandates.

Q: Are 1N5234B and 1N5234BTR suitable replacements for 1N827-1?

A: These parts are functionally compatible for 6.2 V Zener regulation at 500 mW. However, they differ in impedance (7 Ohms versus 15 Ohms) and reverse leakage current (5 µA @ 4 V versus 2 µA @ 3 V). Applications sensitive to dynamic impedance or leakage current specifications require circuit analysis before substitution.

Q: What does the JANTX designation on JANTX1N827-1 indicate?

A: JANTX indicates military-grade qualification to MIL-PRF-19500/159. This part is electrically identical to 1N827-1 but undergoes additional screening and testing for military applications. Use JANTX1N827-1 when military specification compliance is required.

Q: Can I use 1N5234BTR in applications requiring -55°C minimum operating temperature?

A: Yes. The 1N5234BTR operates from -65°C to 200°C, which exceeds the -55°C to 175°C range of the 1N827-1. The extended lower temperature limit provides compatibility with applications requiring operation below -55°C.

Q: How does impedance affect Zener diode selection?

A: Impedance (Zzt) determines the dynamic voltage regulation characteristics. Lower impedance (7 Ohms in 1N5234B/1N5234BTR) provides better voltage stability under load current variations. Higher impedance (15 Ohms in 1N827-1) results in greater voltage variation with load changes. Select based on circuit regulation requirements.

Q: Is the DO-35 package identical across all listed substitute parts?

A: Yes. All listed parts use the DO-35 (DO-204AH) axial through-hole package. Physical dimensions and pin configuration are identical, allowing direct PCB mounting compatibility without layout modifications.

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