Equivalent & Substitute Parts for 1N709 Zener Diode

Part Overview

The 1N709 is a Zener Diode from Microchip Technology, classified under the Diodes, Zener category. It provides voltage regulation at 6.2 V with a maximum power dissipation of 250 mW in a DO-35 through-hole package. This part is currently active. Identifying alternative model numbers is necessary for procurement flexibility, design revisions, compliance requirements, and ensuring available inventory. Alternate parts must strictly match critical electrical and mechanical specifications.

Key Parameters

Parameter	1N709 Value
Part Category	Diodes, Zener
Voltage - Zener (Nom) (Vz)	6.2 V
Tolerance	±10%
Power - Max	250 mW
Impedance (Max) (Zzt)	4.1 Ohms
Mounting Type	Through Hole
Package / Case	DO-204AH, DO-35, Axial
Supplier Device Package	DO-35
RoHS Status	RoHS non-compliant
REACH Status	REACH Unaffected
Product Status	Active

Substitute Part Grouping Explanation

Substitution is determined strictly by electrical and package parameters, including Zener voltage (Vz), tolerance, maximum power rating, impedance (Zzt), mounting type, and package dimensions. Substitute parts must share the same Zener voltage and similar or broader tolerance and power ratings within the same mechanical format. Compliance-related parameters such as RoHS and REACH status may influence selection in restricted applications.

Parameter Comparison

Parameter	Main Part: 1N709 (Microchip Technology)	Substitute: 1N4735A,133 (Nexperia USA Inc.)
Category	Diodes, Zener	Diodes, Zener
Voltage – Zener (Nom) (Vz)	6.2 V	6.2 V
Tolerance	±10%	±5%
Power – Max	250 mW	1 W
Impedance (Max) (Zzt)	4.1 Ohms	2 Ohms
Mounting Type	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AL, DO-41, Axial
Supplier Device Package	DO-35	DO-41
RoHS Status	RoHS non-compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

When selecting between 1N709 and the substitute model 1N4735A,133, consider product status and compliance requirements. Both parts are active and available in inventory. Where RoHS compliance is mandatory, select 1N4735A,133. Where package differences are critical, refer to the specified DO-35 and DO-41 device packages only as provided.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for selecting a substitute for 1N709 Zener Diode?
A1: Key substitution parameters are Zener voltage (6.2 V), tolerance, power rating, impedance, mounting type, and package/case format.

Q2: Is the substitute part 1N4735A,133 electrically compatible with 1N709?
A2: Both parts share the same Zener voltage. Tolerance and power ratings are within comparable ranges according to listed values.

Q3: Are there package differences to consider between 1N709 and 1N4735A,133?
A3: 1N709 uses a DO-35 package, while 1N4735A,133 uses a DO-41 package. Both are axial, through-hole, but physical dimensions may differ per manufacturer designations.

Q4: What compliance differences exist between these parts?
A4: 1N709 is RoHS non-compliant. 1N4735A,133 is ROHS3 compliant. Both are REACH unaffected.

Q5: Is the mounting type interchangeable between the main part and substitute?
A5: Both feature a through-hole mounting type in axial form as specified.

Q6: Does the inventory status affect substitute selection?
A6: Both products are active and in stock per provided inventory data. Production continuity can be maintained with either part.

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