Datasheet

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TL431, TL431A, TL431B, TL432, TL432A, TL432B

www.ti.com

SLVS543N –AUGUST 2004–REVISED JANUARY 2014

TL431 Precision Programmable Reference

Check for Samples: TL431, TL431A, TL431B, TL432, TL432A, TL432B

FEATURES

DESCRIPTION

The TL431 and TL432 are three-terminal adjustable

• Operation From −40°C to 125°C

shunt regulators, with specified thermal stability over

• Reference Voltage Tolerance at 25°C

applicable automotive, commercial, and military

– 0.5% . . . B Grade

temperature ranges. The output voltage can be set to

any value between Vref (approximately 2.5 V) and 36

– 1%. . . A Grade

V, with two external resistors (see Figure 17). These

– 2% . . . Standard Grade

devices have a typical output impedance of 0.2 Ω.

• Typical Temperature Drift (TL431B)

Active output circuitry provides a very sharp turn-on

characteristic, making these devices excellent

– 6 mV (C Temp)

replacements for Zener diodes in many applications,

– 14 mV (I Temp, Q Temp)

such as onboard regulation, adjustable power

• Low Output Noise

supplies, and switching power supplies. The TL432

has exactly the same functionality and electrical

• 0.2-Ω Typical Output Impedance

specifications as the TL431, but has different pinouts

• Sink-Current Capability . . . 1 mA to 100 mA

for the DBV, DBZ, and PK packages.

• Adjustable Output Voltage . . . Vref to 36 V

Both the TL431 and TL432 devices are offered in

three grades, with initial tolerances (at 25°C) of 0.5%,

1%, and 2%, for the B, A, and standard grade,

respectively. In addition, low output drift vs

temperature ensures good stability over the entire

temperature range.

The TL43xxC devices are characterized for operation

from 0°C to 70°C, the TL43xxI devices are

characterized for operation from –40°C to 85°C, and

the TL43xxQ devices are characterized for operation

from –40°C to 125°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (67 pages)

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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 TL431 Precision Programmable Reference Check for Samples: TL431, TL431A, TL431B, TL432, TL432A, TL432B FEATURES 1 • • • • • • • Operation From −40°C to 125°C Reference Voltage Tolerance at 25°C – 0.5% . . . B Grade – 1%. . . A Grade – 2% . . . Standard Grade Typical Temperature Drift (TL431B) – 6 mV (C Temp) – 14 mV (I Temp, Q Temp) Low Output Noise 0.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com TL431, TL431A, TL431B . . . D (SOIC) PACKAGE (TOP VIEW) CATHODE ANODE ANODE NC 1 8 2 7 3 6 4 5 TL431, TL431A, TL431B . . . P (PDIP), PS (SOP), OR PW (TSSOP) PACKAGE (TOP VIEW) REF ANODE ANODE NC CATHODE NC NC NC NC − No internal connection 1 8 2 7 3 6 4 5 NC − No internal connection TL431, TL431A, TL431B . . . PK (SOT-89) PACKAGE (TOP VIEW) TL432, TL432A, TL432B . . .
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 Symbol REF ANODE CATHODE Functional Block Diagram CATHODE + REF _ Vref ANODE Equivalent Schematic CATHODE 800 Ω 800 Ω 20 pF REF 150 Ω 3.28 kΩ 2.4 kΩ 7.2 kΩ 4 kΩ 10 kΩ 20 pF 1 kΩ 800 Ω ANODE NOTE: All component values are nominal.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN MAX 37 V 150 mA (2) VKA Cathode voltage IKA Continuous cathode current range –100 II(ref) Reference input current range –0.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 Electrical Characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER Vref TEST CIRCUIT Reference voltage Figure 1 TL431C, TL432C TEST CONDITIONS VKA = Vref, IKA = 10 mA MIN TYP MAX 2440 2495 2550 SOT23-3 and TL432 devices 6 16 All other devices 4 25 -1.4 -2.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com Electrical Characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER Vref TEST CIRCUIT Reference voltage Figure 1 TEST CONDITIONS VKA = Vref, IKA = 10 mA SOT23-3 and TL432 devices TL431I, TL432I MIN TYP MAX 2440 2495 2550 14 34 5 50 -1.4 -2.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 Electrical Characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER TEST CIRCUIT TL431Q, TL432Q TEST CONDITIONS UNIT MIN TYP MAX 2440 2495 2550 mV 14 34 mV -1.4 -2.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com Electrical Characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER Vref TEST CIRCUIT Reference voltage Figure 1 TEST CONDITIONS VKA = Vref, IKA = 10 mA TL431AC, TL432AC MIN TYP MAX 2470 2495 2520 SOT23-3 and TL432 devices 6 16 All other devices 4 25 -1.4 -2.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 Electrical Characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER Vref TEST CIRCUIT Reference voltage Figure 1 TL431AI, TL432AI TEST CONDITIONS VKA = Vref, IKA = 10 mA SOT23-3 and TL432 devices MIN TYP MAX 2470 2495 2520 14 34 5 50 -1.4 -2.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com Electrical Characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER TEST CIRCUIT TEST CONDITIONS TL431AQ, TL432AQ UNIT MIN TYP MAX 2470 2495 2520 mV 14 34 mV -1.4 -2.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 Electrical Characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER TEST CIRCUIT TL431BC, TL432BC TEST CONDITIONS UNIT MIN TYP MAX 2483 2495 2507 mV 6 16 mV -1.4 -2.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com Electrical Characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER TEST CIRCUIT TEST CONDITIONS TL431BI, TL432BI UNIT MIN TYP MAX 2483 2495 2507 mV 14 34 mV -1.4 -2.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 Electrical Characteristics over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER TEST CIRCUIT TL431BQ, TL432BQ TEST CONDITIONS UNIT MIN TYP MAX 2483 2495 2507 mV 14 34 mV -1.4 -2.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com Parameter Measurement Information VKA Input IKA Vref Figure 1. Test Circuit for VKA = Vref Input VKA IKA R1 Iref R2 Vref R1 ö æ VKA = Vref ç 1 + ÷ + Iref × R1 R2 ø è Figure 2. Test Circuit for VKA > Vref Input VKA Ioff Figure 3.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 Typical Characteristics Data at high and low temperatures are applicable only within the recommended operating free-air temperature ranges of the various devices.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com Typical Characteristics (continued) RATIO OF DELTA REFERENCE VOLTAGE TO DELTA CATHODE VOLTAGE vs FREE-AIR TEMPERATURE OFF-STATE CATHODE CURRENT vs FREE-AIR TEMPERATURE 2.5 − 0.85 VKA = 3 V to 36 V 2 − 0.95 ∆V ref / ∆V KA − mV/V I off − Off-State Cathode Current − µA VKA = 36 V Vref = 0 1.5 1 −1.05 −1.15 −1.25 0.5 −1.35 0 −75 −50 −25 0 25 50 75 100 125 −1.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 Typical Characteristics (continued) EQUIVALENT INPUT NOISE VOLTAGE OVER A 10-S PERIOD V n − Equivalent Input Noise V oltage − µV 6 5 4 3 2 1 0 −1 −2 −3 f = 0.1 to 10 Hz IKA = 10 mA TA = 25°C −4 −5 −6 0 1 2 3 4 5 6 7 8 9 10 t − Time − s 19.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com Typical Characteristics (continued) SMALL-SIGNAL VOLTAGE AMPLIFICATION vs FREQUENCY IKA = 10 mA TA = 25°C A V − Small-Signal V oltage Amplification − dB 60 IKA = 10 mA TA = 25°C 50 Output 15 kΩ IKA 232 Ω 40 9 µF + 30 − 8.25 kΩ 20 GND TEST CIRCUIT FOR VOLTAGE AMPLIFICATION 10 0 1k 10 k 100 k 1M 10 M f − Frequency − Hz Figure 12.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 Typical Characteristics (continued) PULSE RESPONSE 6 TA = 25°C Input Input and Output V oltage − V 5 220 Ω Output 4 Pulse Generator f = 100 kHz 3 50 Ω Output GND 2 TEST CIRCUIT FOR PULSE RESPONSE 1 0 −1 0 1 2 3 5 4 6 7 t − Time − µs Figure 14.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com Typical Characteristics (continued) 150 Ω STABILITY BOUNDARY CONDITIONS FOR ALL TL431B, TL432, SOT-23, SC-70, AND Q-TEMP DEVICES 100 90 I KA − Cathode Current − mA 80 A VKA B V KA C VKA D VKA IKA + = Vref =5V = 10 V = 15 Vf VBATT CL − B 70 TA = 25°C 60 C Stable TEST CIRCUIT FOR CURVE A Stable 50 A 40 IKA A R1 = 10 kΩ 30 150 Ω D CL 20 + B R2 10 0 0.001 − 0.01 0.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 APPLICATION INFORMATION As this device has many applications and setups, there are many situations that this datasheet can not characterize in detail. The linked application notes will help the designer make the best choices when using this part.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 VI(BATT) www.ti.com IN OUT uA7805 Common VO R1 TL431 ( ( VO = 1 + R1 Vref R2 Minimum V V + 5V O = ref R2 Figure 20. Output Control of a Three-Terminal Fixed Regulator VO VI(BATT) ( ( VO = 1 + R1 Vref R2 R1 TL431 R2 Figure 21. High-Current Shunt Regulator VI(BATT) VO R1 TL431 C (see Note A) R2 A.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 VI(BATT) VO ≈5 V Rb (see Note A) 27.4 kΩ 0.1% TL431 27.4 kΩ 0.1% A. Rb should provide cathode current ≥1 mA to the TL431. Figure 24. Efficient 5-V Precision Regulator 12 V VCC 6.8 kΩ 10 kΩ 5V − 10 kΩ 0.1% TL431 10 kΩ 0.1% + X Not Used TL598 Feedback Figure 25. PWM Converter With Reference R3 (see Note A) VI(BATT) R1A R1B TL431 R2A A.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 www.ti.com 650 Ω 12 V R 2 kΩ TL431 On Off æ 12 V Delay = R × C × In çç 12 V – Vref è C ö ÷÷ ø Figure 27. Delay Timer RCL 0.1% VI(BATT) IO Iout = R1 R1 = TL431 V ref + IKA R CL V I(BATT) I O h FE + IKA Figure 28. Precision Current Limiter VI(BATT) IO IO = TL431 Vref RS RS 0.1% Figure 29.
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TL431, TL431A, TL431B, TL432, TL432A, TL432B www.ti.com SLVS543N – AUGUST 2004 – REVISED JANUARY 2014 REVISION HISTORY Changes from Revision K (June 2010) to Revision L • Page Deleted TA values under TEST CONDITIONS for VI(dev) and II(dev) PARAMTERS in the ELECTRICAL CHRACTERISTICS table. .....................................................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 17-Jun-2014 NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Jun-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) TL431ACDBVR SOT-23 DBV 5 3000 178.0 9.0 TL431ACDBVR SOT-23 DBV 5 3000 180.0 TL431ACDBVT SOT-23 DBV 5 250 178.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Jun-2014 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TL431AIDCKR SC70 DCK 6 3000 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL431AIDCKT SC70 DCK 6 250 179.0 8.4 2.2 2.5 1.2 4.0 8.0 Q3 TL431AIDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TL431AIPK SOT-89 PK 3 1000 180.0 12.4 4.91 4.52 1.9 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Jun-2014 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TL431CDBZT SOT-23 DBZ 3 250 179.0 8.4 3.15 2.95 1.22 4.0 8.0 Q3 TL431CDR SOIC D 8 2500 330.0 12.8 6.4 5.2 2.1 8.0 12.0 Q1 TL431CDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 TL431CDRG4 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Jun-2014 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TL432BIDBZT SOT-23 DBZ 3 250 178.0 9.2 3.08 2.8 1.27 4.0 8.0 Q3 TL432BIPK SOT-89 PK 3 1000 180.0 12.4 4.91 4.52 1.9 8.0 12.0 Q3 TL432BQDBZR SOT-23 DBZ 3 3000 180.0 8.4 3.15 2.77 1.22 4.0 8.0 Q3 TL432BQDBZR SOT-23 DBZ 3 3000 178.0 9.2 3.08 2.8 1.27 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Jun-2014 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TL431ACDBVR SOT-23 DBV 5 3000 202.0 201.0 28.0 TL431ACDBVT SOT-23 DBV 5 250 180.0 180.0 18.0 TL431ACDBZR SOT-23 DBZ 3 3000 203.0 203.0 35.0 TL431ACDBZR SOT-23 DBZ 3 3000 180.0 180.0 18.0 TL431ACDBZR SOT-23 DBZ 3 3000 202.0 201.0 28.0 TL431ACDBZT SOT-23 DBZ 3 250 180.0 180.0 18.0 TL431ACDCKR SC70 DCK 6 3000 202.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Jun-2014 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TL431BIDCKT SC70 DCK 6 250 203.0 203.0 35.0 TL431BIDR SOIC D 8 2500 340.5 338.1 20.6 TL431BIDR SOIC D 8 2500 364.0 364.0 27.0 TL431BIDRG4 SOIC D 8 2500 340.5 338.1 20.6 TL431BIPK SOT-89 PK 3 1000 340.0 340.0 38.0 TL431BQDBVR SOT-23 DBV 5 3000 203.0 203.0 35.0 TL431BQDBVT SOT-23 DBV 5 250 203.0 203.0 35.
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PACKAGE MATERIALS INFORMATION www.ti.com 5-Jun-2014 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TL432AIDBZR SOT-23 DBZ 3 3000 180.0 180.0 18.0 TL432AIDBZT SOT-23 DBZ 3 250 180.0 180.0 18.0 TL432AIPK SOT-89 PK 3 1000 340.0 340.0 38.0 TL432AQDBVR SOT-23 DBV 5 3000 203.0 203.0 35.0 TL432AQDBVT SOT-23 DBV 5 250 203.0 203.0 35.0 TL432AQDBZR SOT-23 DBZ 3 3000 202.0 201.0 28.0 TL432AQDBZT SOT-23 DBZ 3 250 203.0 203.
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MECHANICAL DATA MCER001A – JANUARY 1995 – REVISED JANUARY 1997 JG (R-GDIP-T8) CERAMIC DUAL-IN-LINE 0.400 (10,16) 0.355 (9,00) 8 5 0.280 (7,11) 0.245 (6,22) 1 0.063 (1,60) 0.015 (0,38) 4 0.065 (1,65) 0.045 (1,14) 0.310 (7,87) 0.290 (7,37) 0.020 (0,51) MIN 0.200 (5,08) MAX Seating Plane 0.130 (3,30) MIN 0.023 (0,58) 0.015 (0,38) 0°–15° 0.100 (2,54) 0.014 (0,36) 0.008 (0,20) 4040107/C 08/96 NOTES: A. B. C. D. E. All linear dimensions are in inches (millimeters).
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MECHANICAL DATA MPSF001F – JANUARY 1996 – REVISED JANUARY 2002 KTP (R-PSFM-G2) PowerFLEX PLASTIC FLANGE-MOUNT PACKAGE 0.080 (2,03) 0.070 (1,78) 0.243 (6,17) 0.233 (5,91) 0.228 (5,79) 0.218 (5,54) 0.050 (1,27) 0.040 (1,02) 0.010 (0,25) NOM 0.130 (3,30) NOM 0.215 (5,46) NOM 0.247 (6,27) 0.237 (6,02) Thermal Tab (See Note C) 0.287 (7,29) 0.277 (7,03) 0.381 (9,68) 0.371 (9,42) 0.100 (2,54) 0.090 (2,29) 0.032 (0,81) MAX Seating Plane 0.090 (2,29) 0.180 (4,57) 0.004 (0,10) 0.005 (0,13) 0.
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