1. OptoHiT™ Optocoupler High Temperature

2. FODM8801 OptoHiTTM 125ºC Phototransistor
The OptoHiT™ trademark denotes Optocoupler High Temperature, utilizes Fairchild’s leading edge patented process technology to achieving high operating temperature characteristics, up to 125°C. The first optocoupler in OptoHiT™ Series, FODM8801, consists of an aluminum gallium arsenide (AlGaAs) infrared light emitting diode optically coupled to a phototransistor, in a compact half pitch, mini-flat, 4-pin package. It set various benchmarks in guaranteeing Current Transfer Ratio (CTR) and switching performance across extended operating temperature range.

3. Value Propositions of OptoHiTTM Optocouplers
High efficiency emitter and tight hfe binning of transistor result in Guaranteed Current Transfer Ratio (CTR) specifications across full temperature range from -40ºC to +125ºC
Excellent CTR linearity at high temperature
CTR at very low input current, IF (1mA, 1.6mA, and 3mA)
Guaranteed switching specifications over extended operating temperature range as compared to the existing optocouplers
Owing to its small footprint, this half-pitch Mini-Flat Package (MFP) can further save on board real estate giving hardware designers more flexibility and allowing for overall systems cost savings
High isolation voltage certified by UL1577 (3,750VACRMS for 1 min.) and DIN_EN/IEC (VDE) certification for increased reliability
245°C IR reflow soldering capability in lead free environments

4. Current Transfer Ratio Comparison
FODB101
FODM8801

5. Market Characteristics
In the phototransistor product space, the key differentiators are in the area of wider SO packages (ie. stretched), higher temperature and multi-channels. Vishay, as a relatively small player, continues to differentiate in these aspects.
The SAM by this extended temperature product family is estimated at $30M out of the $257M in year The demand for high temperature products is growing.

6. Parametric Comparison
Note:
FODM8801x has guaranteed CTR and switching specifications over extended operating temperature range. All other vendors only specified datasheet parameters at room temperature.
2. CTR selections are allowed.
All are in half-pitch Mini-Flat Package and certified by UL1577 (3,750VACRMS for 1 min.).
Vishay as a key competitor in phototransistor had, in recent years, released TCLT1xxx Series, up to 110ºC, in stretched packages.
Avago has been expanding their 125ºC portfolio for high performance optocouplers to address the automotive needs.

7. Recommended Resale & Ordering Info
Product ID
Volume (unit)
999
4,999
9,999
99,999
499,999
999,999
FODM8801x
0.3520
0.3168
0.2816
0.2464
0.2200
0.1936
FODM8801xR2
0.3720
0.3348
0.2976
0.2604
0.2325
0.2046

8. OPTOPLANAR® Technology
The High-Speed and Gate Drive optocoupler families utilize Fairchild’s patented coplanar packaging technology, Optoplanar® technology, and optimized IC design to guarantee minimum 20kV/μs Common Mode Rejection (CMR).
Competitive Advantages
High Common Mode Noise Rejection (CMR). This construction eliminates the capacitive charge buildup that occurs in the over-under construction.
Fixed isolation gap (thickness through insulation). So a consistent high input to output isolation voltage
The High-Speed and Gate Drive series are packaged in Fairchild’s patented coplanar packaging technology called Optoplanar®, and using optimized IC design to guarantee 20kV/µs minimum Common Mode Noise Rejection rating. This co-planar packaging eliminates the capacitive charge buildup, and thus reduces package capacitance by more than 30% compared to competitive solutions, which uses the over-under construction. In addition the fixed isolation gap, as defined by the thickness through insulation, provide a consistently high input to output isolation voltage. These competitive advantages will further differentiate us from our competitors, especially when used in noisy industrial environments.
Positioned as high CMR, provides a credible edge over competitive alternatives; high CMR is a consistent value-added message from Product Line to the field and end customers. For in depth knowledge about CMR, please refer to an application article titled “Optocoupler Common Mode Rejection (CMR)” by John Constantino, Strategic Marketing Manager, Fairchild Semiconductor Corp., Optoelectronics Division.

9.
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