
HE3621A0510
miniature 1 Form A reed relay with a 5 V diode-suppressed coil
Key details
| Part Number | HE3621A0510 |
|---|---|
| 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
HE3621A0510 Overview
HE3621A0510 is a Littelfuse miniature 1 Form A reed relay with a 5 V diode-suppressed 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 Protection | Internal suppression diode; observe polarity |
| Coil Resistance | 500 Ω |
| Maximum Switching Power | 10 W |
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
HE3621A0510 is obsolete or discontinued.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.
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.
HE3621A0510 is obsolete or discontinued.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.