
CND TEK
A form-fit alternate, but lacks the target's PoE+ rating and has a commercial temperature range. Requires review.
The CND TEK B1608S is a single-port 10/100Base-T Ethernet transformer module designed for PoE+ applications, supporting up to 720mA current. It operates over an extended temperature range of -40°C to +85°C.
Mismatching PoE capability is a critical failure point.
Several candidates share the same SMD-16 package.
The specific combination of PoE+ and temperature range limits direct substitutes.
There are no confirmed direct, pin-to-pin replacements for the B1608S that match its PoE+ (720mA) capability and extended temperature range.
No direct drop-in replacement found. Alternatives lack the target's PoE+ current rating and/or have a narrower operating temperature range.
The primary risk is substituting a non-PoE or lower-rated part, which could lead to circuit failure under load in PoE applications.

CND TEK
A form-fit alternate, but lacks the target's PoE+ rating and has a commercial temperature range. Requires review.
| Feature / factor | B1608S | B1601S | B1603S | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMD, 16-pin | SMD, 16-pin | - | SMD, 16-pin — Package and pin count match. | |
| Application | PoE+ (720mA) | Not Specified | - | Not Specified — Candidate lacks specified PoE+ current rating. | |
| Temperature | -40°C to +85°C | 0°C to +70°C | - | 0°C to +70°C — Candidate has a commercial temperature range. | |
| Inductance | 350 µH min | 350 µH min | - | 350 µH min — OCL matches. | |
| Dcr | 1.2 Ω max | 1.2 Ω max | - | 1.2 Ω max — DC resistance matches. |
No direct drop-in alternatives have been confirmed. Parts like B1601S and B1603S are physically similar but lack the specified PoE+ capability and have a more limited temperature range, requiring careful review.