52280 [MII]

True Hermetically Sealed Proportionally Controlled Metal Package Heater Hybrids; 真正的密封比例控制金属封装加热器杂交


型号：	52280
厂家：	Micropac Industries
描述：	True Hermetically Sealed Proportionally Controlled Metal Package Heater Hybrids 真正的密封比例控制金属封装加热器杂交
文件：	总3页 (文件大小：117K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

True Hermetically Sealed Proportionally Controlled

Metal Package Heater Hybrids

Mii

HYBRID MICROELECTRONICS

PRODUCTS DIVISION

Features:

Applications:

•

Self-contained

•

Ideal for microwave oscillators

Telecommunications

Other areas where temperature control is needed

Programmable via a single external resistor

Available in 28 watt and 48 watt versions

Standard products

DESCRIPTION

The Mii heater is a self-contained hybrid circuit heater programmable for temperature by a single external resistor. These

systems are ideal for microwave oscillators, telecommunications and other areas where temperature control is needed.

Metal package heaters are available in 28 watt and 40 watt versions..

Typical Electrical Characteristics for DC Metal Package Heater

Mii P/N 52280-2 …………………………………………………………….……………………….……..…. 28 VDC Input, 28 Watts

Mii P/N 52280-1 …………………………………………………………….…………………………...……. 28 VDC Input, 40 Watts

Operating Voltage Range (See Note 1) ………………………………………………………………………..…………. 28± 1 VDC

Voltage Limits ……………………………………………………………………………………………... 24 VDC Min, 32 VDC Max

Reverse Voltage Protection …………………………………………………………………………..………….………… to 50 VDC

Operating Current Range ………………………………………………………………….…………………..……… 0.005 to 1.00 A

Turn-on Current ………………………………………………………………………………………….…….……………… to 1.00 A

Quiescent Current ……………………………………………………………………………………………..…….. Less than .005 A

Typical Temperature Characteristics

Control Range …………………………………………………………………………………………..……………. +50°C to +100°C

Variation with Load (See Note 2) ……………………………………………………………………………………...…… 10° C Max

Input Voltage Variation (See Note 3) ……………………………………………………...…………………….…..…………… ±2°C

Maximum Control Temperature (See Note 4) ………………………………………………………………….…………….. +120°C

Environmental Characteristics

Operating Temperature ………………………………………………………………………………………….…… -55°C to +100°C

Altitude ……………………………………………………………………………………………………………….….. 70,000 Ft. Max

Shock ………………………………………………………………………………………………………………….……… 200G Max

Vibration ………………………………………………………………………………………………….………. 50G at 2,000 Hz Max

Humidity ……………………………………………………………………………………………………………… Greater than 95%

Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.

Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.

MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION • 905 E. Walnut St., Garland, TX 75040 • (972) 272-3571 • Fax (972) 494-2281

www.micropac.com

E-MAIL: hybridsales@micropac.com

12/17/01

True Hermetically Sealed Proportionally Controlled

Metal Package Heater Hybrids

Reliability

Each hybrid circuit is subjected to the following reliability screening per MIL-PRF-38534:

•

Precap internal visual Methods 2017 and 2032

High Temperature stabilization bake, Method 1008, Condition C (performed at Customer’s request only)

Temperature cycling, Method 1010, Condition B

Constant acceleration, Method 2001, Condition B, Y axis only

Optional burn-in per Mii specifications

Fine and Gross lead test, Method 1014, Conditions A₁& C₁

Notes:

1. The heater is operational from 24 to 32 VDC; however, for optimum performance 28 VDC is recommended.

2. Maximum temperature variation for current change from 5% over Quiescent to 95% of turn on current.

3. Maximum temperature variation over operating voltage range when ambient temperature is constant and the

supply current is between 5% over Quiescent and 95% of turn on current.

4. Maximum temperature with any value of control resistor, including 0 ohms.

All metal package hermetically sealed heaters are leak tested to meet MIL-PRF-38534, Method 1014, test

conditions A & C, with a maximum leak rate of 1 X 10^-7atm-cc/sec.

Optimum heat transfer is obtained by using a thermal joint compound such as Dow Corning 340 on the mounting

surface.

Operation is possible above 100°C, but electrical performance is not QA guaranteed. Input current decays to ≤20

mA max at = 120°C without damage to the heater.

All Mii heaters are protected against reverse voltage up to 50 V.

Maximum power rating for control resistor is 1/8 watt. Precise resistor values should be determined by measuring

the surface temperature.

Micropac Industries, Inc. will work with the potential customer for voltage and wattage ratings not currently

available.

Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.

Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.

MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION • 905 E. Walnut St., Garland, TX 75040 • (972) 272-3571 • Fax (972) 494-2281

www.micropac.com E-MAIL: hybridsales@micropac.com 12/17/01

True Hermetically Sealed Proportionally Controlled

Metal Package Heater Hybrids

.750

.620+10/-0

.150

.500

.100

.094

.040

.175

.210±.002

(4 PLCS)

.500

.025 ± .002 DIA

(4 PLCS)

.060

Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.

Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.

MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION • 905 E. Walnut St., Garland, TX 75040 • (972) 272-3571 • Fax (972) 494-2281

www.micropac.com E-MAIL: hybridsales@micropac.com 12/17/01

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