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Microchip Technology 1N6326DUS — Discrete Semiconductors

Microchip 1N6326DUS Zener Diode, 12 V, ±1%, 500 mW, SQ-MELF

MPN1N6326DUS
End of Life

Microchip Technology Zener diode, 1N6326DUS, 12 V nominal, ±1% tolerance, 500 mW, SQ-MELF B package, surface mount, bulk.

$31.7102Ref. price · indicative, final on quote
Microchip Technology 1N6326DUS datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

1N6326DUS specifications
ParameterValue
MountingSurface Mount
Voltage - zener (Nom)12 V
Voltage - forward (Vf) (Max) @ if1.4 V @ 1 A
Current - reverse leakage @ vr1 µA @ 9 V
Power - max500 mW
Operating temperature-65°C ~ 175°C (TJ)
PackageBulk
Tolerance±1%
CaseSQ-MELF, B
Impedance (Max)7 Ohms

Product details

12 V Zener with tight ±1% tolerance for precision clamping

The 1N6326DUS is a 12 V Zener diode from Microchip Technology in a surface-mount SQ-MELF B package, rated for 500 mW continuous power dissipation. The ±1% tolerance on the nominal voltage means this part holds the regulation point tighter than the standard 5% Zener — useful when the downstream circuit cannot tolerate a 0.6 V shift in the clamp threshold.

Impedance and leakage — what governs the real regulation

Maximum Zener impedance (Zzt) is 7 Ohms at the test current. Combined with the 1 µA maximum reverse leakage at 9 V reverse voltage, the diode draws negligible current below the breakdown knee — it stays out of the circuit until the rail hits the clamp voltage. The forward voltage spec of 1.4 V max at 1 A forward current confirms the diode can also serve as a general-purpose rectifier in low-current paths, though the 500 mW power limit restricts continuous forward duty.

Frequently asked questions

Where can I buy 1N6326DUS and how do I get a price?

The 1N6326DUS is sourced to order through independent distribution.

What is the closest pin-compatible alternative to 1N6326DUS in this Discrete Semiconductors family?

The SQ-MELF B package is shared by other Zener voltages in the same Microchip family, but a different voltage grade is not a functional replacement for a 12 V clamp.