STMicroelectronics 1, 28 V Zener Diode, Single 400 W Surface 2-Pin StmiteFLAT
- RS Stock No.:
- 190-7571
- Mfr. Part No.:
- SMM4F28A-TR
- Brand:
- STMicroelectronics
Bulk discount available
Subtotal (1 pack of 25 units)*
£9.60
(exc. VAT)
£11.525
(inc. VAT)
FREE delivery for orders over £60.00
Temporarily out of stock
- Shipping from 18 November 2026
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Units | Per unit | Per Pack* |
|---|---|---|
| 25 - 100 | £0.384 | £9.60 |
| 125 - 225 | £0.365 | £9.13 |
| 250 - 600 | £0.328 | £8.20 |
| 625 - 1225 | £0.296 | £7.40 |
| 1250 + | £0.281 | £7.03 |
*price indicative
- RS Stock No.:
- 190-7571
- Mfr. Part No.:
- SMM4F28A-TR
- Brand:
- STMicroelectronics
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | STMicroelectronics | |
| Diode Configuration | Single | |
| Nominal Zener Voltage Vz | 28V | |
| Product Type | Zener Diode | |
| Mount Type | Surface | |
| Number of Elements per Chip | 1 | |
| Maximum Power Dissipation Pd | 400W | |
| Package Type | StmiteFLAT | |
| Zener Type | Uni-Directional | |
| Pin Count | 2 | |
| Minimum Operating Temperature | -55°C | |
| Maximum Reverse Leakage Current | 200nA | |
| Maximum Operating Temperature | 175°C | |
| Length | 3.9mm | |
| Height | 0.95mm | |
| Series | SMM4FxxA | |
| Standards/Approvals | No | |
| Automotive Standard | No | |
| Select all | ||
|---|---|---|
Brand STMicroelectronics | ||
Diode Configuration Single | ||
Nominal Zener Voltage Vz 28V | ||
Product Type Zener Diode | ||
Mount Type Surface | ||
Number of Elements per Chip 1 | ||
Maximum Power Dissipation Pd 400W | ||
Package Type StmiteFLAT | ||
Zener Type Uni-Directional | ||
Pin Count 2 | ||
Minimum Operating Temperature -55°C | ||
Maximum Reverse Leakage Current 200nA | ||
Maximum Operating Temperature 175°C | ||
Length 3.9mm | ||
Height 0.95mm | ||
Series SMM4FxxA | ||
Standards/Approvals No | ||
Automotive Standard No | ||
The SMM4F Transil series has been designed to protect sensitive equipment against electrostatic discharges and electrical over stress. They are generally for surges below 400 W 10/1000 μs. This planar technology makes it compatible with high-end equipment and SMPS where low leakage current and high junction temperature are required to provide reliability and stability over time. Their low clamping voltages provide a better safety margin to protect sensitive circuits with extended life time expectancy.Packaged in STmite Flat, this minimizes PCB space consumption. Transil is a trademark of STMicroelectronics.
Typical peak pulse power:
400 W (10/1000 μs)
2.4 kW (8/20 μs)
Stand-off voltage range: from 5 V to 33 V
Unidirectional type
Low leakage current:
0.2 μA at 25 °C
1 μA at 85 °C
Operating Tj max: 175 °C
Halogen free molding compound
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