SP-352 (Beckman)
Panaplex Display
 
Planar neon gas discharge 'Panaplex' readout.
Separate anodes allow single-digit multiplexing.
Used in B&K 282 DMM, Data Precision 3500 VOM, ESE ES-124L clock, Heathkit GC-1005, GC-1092A & GC-2005 clocks, and Heathkit HW-104, SB-104 & SB-104A radio transceivers.

Röhrendaten/Tube Data
German English    
Typ Type   SP-352
Hersteller Brand   Beckman
Vergleichstypen Substitutes   238-002-9-001, 411-286, 411-0286, 411-295, 411-0295, 1970-0066, EX-352, HB-352
Symbole Displayed symbols   2-Digit, 7 segment, 2 x PR
Symbolhöhe Symbol height   14mm (0.55")
Abmessungen Dimensions   27mm (1.062") X 28.4mm (1.12") X 13.1mm (0.515") thick
Pindurchmesser Pin diameter   0.48mm (0.019")
min. Betriebsspannung min. supply voltage V 160
typ. Brennspannung typ. maintaining voltage V 135
Betriebs-Kathodenstrom typ. cathode current mA Siehe Datenblatt für die verschiedenen Segmente!/
See data sheet for different segments!
Sockel Base   20 pins, special arrangement
Fassung Socket   Spezielle 20 Pin Fassung/Special 20 pin socket

Features:
0.55 Inch (14mm) Character Height (SP-350 Series)
Neon-Orange Color
210 fL Brightness at Nominal Current
130° Viewing Angle
40 ft. (12,2m) Viewing Distance (SP-350 Series)
10 Year Life

DC Characteristics:

 

SP-330 Family

SP-350 Family

 

MIN

TYP

MAX

MIN

TYP

MAX

Display Supply Voltage1

160 Vdc

180 Vdc

Note 2

160 Vdc

180 Vdc

Note 2

Anode-to-Anode Differential
Voltage10

---

---

14 Vdc

---

---

14 Vdc

Anode-to-Cathode Voltage
Drop (Typical Current)

---

135 Vdc

---

---

135 Vdc

---

Cathode Current - Typical
Segment (Seg. "b") 3 4

70 µA

180 µA

250 µA

130 µA

330 µA

420 µA

Cathode Current - Decimal
Point4

60 µA

135 µA

190 µA

65 µA

135 µA

190 µA

Cathode Current- Plus Sign4

110 µA

290 µA

400 µA

260 µA

585 µA

820 µA

Cathode Current-Minus Sign4

50 µA

135 µA

185 µA

120 µA

270 µA

380 µA

Cathode Current –Keep-Alive

10 µA

50 µA

---

10 µA

50 µA

---

Power Dissipation (with all segments lighted &
assuming typical Segment current)

---

175 mW

---

---

325 mW

---

Operating Temperature

0°C

---

70°C

0°C

---

70°C

Storage Temperature

-55°C

---

125°C

-55°C

---

125°C

Multiplex Characteristics:

 

SP-330 Family

SP-350 Family

 

MIN

TYP

MAX

MIN

TYP

MAX

Display Supply Voltage

160 Vdc

180 Vdc

Note 2

160 Vdc

180 Vdc

Note 2

Anode Voltage Swing

30 Vdc

45 Vdc

90 Vdc

30 Vdc

45 Vdc

90 Vdc

Anode On Time6 7 11

80 µsec

200 µsec

----

80 µsec

200 µsec

----

Interdigit Blanking Time12 13
SP-358

40 µsec

55 µsec

----

40 µsec
50µsec

55µsec
100µsec

----

Refresh Period

----

----

Note 6

----

----

Note 6

Cathode Voltage Swing8 9

30 Vdc

50 Vdc

120 Vdc

30 Vdc

50 Vdc

120 Vdc

Cathode Bias Voltage (ON
Anode to OFF Cathode
Voltage)9

90 Vdc

110 Vdc

120 Vdc

90 Vdc

110 Vdc

120 Vdc

Notes:

  1. Recommended minimum supply voltage for initial ionization is 160 volts dc. After the display has ionized, the voltage drop is approximately 135 volts at typical cathode current.
  2. Display supply voltage (including ripple) should not exceed 200 Vdc when display is used with DD-700 decoder/drivers. Higher display supply voltages are acceptable when the breakdown of the driving device exceeds 80 Vdc.
  3. Segment currents as a proportion of b segment current:
    a, d, f, n, p, r, and numeric g current ratio 1.00
    c current ratio 1.25
    a current ratio 1.15
    h, j, and k current ratio 0.85
    m and alphanumeric g current ratio 0.50
  4. The specified minimum current is required for even segment glow. Current values up to 1.5 times the typical specified may be used. Life expectancy, however, may be reduced by operation at excessively high currents. Segment currents for multiplexed (time shared) operation may safely be increased to four times typical with 0.25 or smaller duty cycle.
  5. To ensure uniform operation of both colon cathodes, each should have its own current limiting device (resistor or current sink).
  6. Keep-alive use is recommended for all multiplexed application. Three milliseconds is the maximum refresh period without keep-alive. Ten milliseconds is typical with keep-alive.
  7. No anode or cathode blanking is required for proper display performance. Some blanking, however, may be advantageous in eliminating time overlap of signals due to circuit characteristics.
  8. Cathode voltage swings of as little as 30 volts may be acceptable under specific conditions.
  9. The sum of cathode bias voltage and cathode voltage swing must be within recommended display supply voltage.
  10. Specified for lighted cathodes on all digits with Independent current limiting. For busted cathodes (multiplexed operation). 90 volts is permissible.
  11. Anode ON times assume typical keep-alive current and typical anode supply voltage.
  12. The specified blanking time assumes 990 µA for SP-350 series,520 µA for the SP-330 Series. Blanking requirements are strongly dependent upon the mode of multiplex operation, the segment current used, and upon the supply voltage used.
  13. Colons, decimals, pluses and minuses must have the same blanking as any other cathode and are only enabled during their respective digit times.

Outline:

Pinout:

Ansicht von vorne / View from front

Drawing:

Ansicht von vorne / View from front

Downloads/Datasheets:

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