HE3621A0500
miniature 1 Form A reed relay with a 5 V coil
Key details
| Part Number | HE3621A0500 |
|---|---|
| Manufacturer | Littelfuse |
| Category | Reed Relay |
| Lifecycle Status | Obsolete |
| Series | HE3600 |
| Package / Case | 4-pin single-in-line package, 19.05 mm × 5.08 mm |
| Pin Count | 4 |
| Operating Temperature | -40°C to +85°C |
| Last Verified | 2026-07-21 |
Part information
HE3621A0500 Overview
HE3621A0500 is a Littelfuse miniature 1 Form A reed relay with a 5 V coil supplied in 4-pin single-in-line package, 19.05 mm × 5.08 mm. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.
Key Technical Specifications
| Contact Form | 1 Form A (SPST normally open) |
|---|---|
| Coil Voltage | 5 V DC |
| Coil Resistance | 500 Ω |
| Maximum Switching Power | 10 W |
| Maximum Switching Current | 0.5 A DC |
Package and Ordering Notes
The listed package is 4-pin single-in-line package, 19.05 mm × 5.08 mm with 4 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. Lifecycle is recorded as Obsolete; confirm current factory support and last-time-buy constraints before design-in.
Sourcing Guidance
HE3621A0500 is obsolete or discontinued. Require date-code, label, package and traceability checks, and validate any replacement independently.
For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.
Manufacturer Documentation
Technical values were checked against Littelfuse documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.
Related part numbers
These published records are the closest catalog references to HE3621A0500 by manufacturer, product category, series or package. Confirm electrical ratings, pinout and ordering suffixes before substitution.
- HE3621A0510 — miniature 1 Form A reed relay with a 5 V diode-suppressed coil Related by the same series and the same manufacturer.
- DS2E-S-DC12V — 2 Form C sealed signal relay with a 12 V DC coil and 200 mW nominal coil power Related by the same relay product group.
- DS2E-S-DC24V — 2 Form C sealed signal relay with a 24 V DC coil and 200 mW nominal coil power Related by the same relay product group.
- DS2E-S-DC5V — 2 Form C sealed signal relay with a 5 V DC coil and 200 mW nominal coil power Related by the same relay product group.
Lifecycle and sourcing review
This part has a legacy lifecycle status. Submit the exact MPN, quantity, delivery destination and date-code requirements for a sourcing review.
HE3621A0500 is obsolete or discontinued. Require date-code, label, package and traceability checks, and validate any replacement independently.
Potential alternative part numbers
Verify package, pinout, voltage, firmware behavior and qualification before substitution.