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Good-Ark Semiconductor 1SMB5953B
- Part Number:
1SMB5953B
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- RoHs:
RoHS Compliant - Datasheet:
1SMB5953B_Datesheet - Description:
DIODE, ZENER, 3W, 150V, DO-214AA
- In stock 4,463
Full Datasheet Summary of 1SMB5953B 3W Zener Diode
1. Basic Product Overview
1.1 Core Identification
- Full Part Number: 1SMB5953B
- Series: 1SMB5913B ~ 1SMB5956B 3W surface-mount Zener Diode family
- Nominal Zener Voltage: 150 V (±5% standard tolerance)
- Power Rating: 3 W DC power dissipation
- Package Type: DO-214AA (SMB surface-mount plastic package)
- Marking Code on Body: 953B
- Datasheet Reference: GoodArk Semiconductor Doc.US1SMB59xxBxSW2.0, Feb 2022
1.2 Key Product Features
- Complete wide voltage coverage from 3.3 V to 200 V across the series; this unit fixed at nominal 150 V
- Flat molded housing for accurate automated SMT placement; supports top or bottom PCB mounting
- High forward surge current withstand capability for transient surge suppression
- High-temperature soldering compatibility: 250 °C for 10 seconds, 9.5 mm lead length, 2.3 kg tension resistance
- Void-free transfer-molded plastic case, corrosion-resistant solderable terminals
- Clear color band to mark cathode terminal for polarity identification
- RoHS compliant, lead-free terminal plating
Power Derating Curve
2. Absolute Maximum Ratings (TA = 25 °C)
All values represent non-repetitive stress limits; exceeding any parameter causes permanent device damage
| Parameter | Symbol | Rating | Unit | Remarks |
|---|---|---|---|---|
| DC Power Dissipation (TL = 75 °C, zero lead length) | PD | 3 | W | Derate linearly 40 mW/°C above 75 °C |
| Derating Slope above 75 °C | — | 40 | mW/°C | Linear power reduction with temperature rise |
| Operating Junction Temperature | TJ | -65 ~ +150 | °C | Continuous operation limit |
| Storage Temperature Range | TSTG | -65 ~ +150 | °C | Long-term storage without bias Power Derating Curve |
3. Exclusive Electrical Parameters of 1SMB5953B
Test Conditions: TL = 30 °C; All diodes max forward voltage VF = 1.5 V @ IF = 200 mA DC
| Parameter | Symbol | Value | Unit | Definition & Test Condition |
|---|---|---|---|---|
| Min Zener Voltage @ IZT | VZ (Min) | 142.5 | V | Lower tolerance bound |
| Nominal Zener Voltage @ IZT | VZ (Nom) | 150 | V | Standard rated clamping voltage |
| Max Zener Voltage @ IZT | VZ (Max) | 157.5 | V | Upper tolerance bound (±5% total window) |
| Zener Test DC Current | IZT | 2.5 | mA | DC bias current for VZ measurement |
| Max Dynamic Impedance @ IZT | ZZT | 600 | Ω | AC impedance at rated test current |
| Knee Test Current | IZK | 0.25 | mA | Low-current knee bias point |
| Max Dynamic Impedance @ IZK | ZZK | 6000 | Ω | Impedance at low knee current |
| Reverse Test Voltage for Leakage | VR | 1 | V | Reverse bias for IR measurement |
| Max Reverse Leakage Current @ VR | IR | 1 | µA | Off-state leakage at 1 V reverse bias |
| Maximum DC Zener Current | IZM | 10 | mA | Continuous maximum reverse operating current |
3.1 Forward Electrical Characteristic (Whole Series Standard)
- Max Forward Voltage: VF = 1.5 V at DC forward current IF = 200 mA
4. Mechanical Specifications (DO-214AA SMB Package)
4.1 Case & Material
- Case: Void-free transfer-molded flame-retardant plastic
- Terminals: Copper alloy with corrosion-resistant solderable plating
- Polarity Marker: Single color band printed on cathode end
- Unit Weight: 0.003 oz / 0.093 grams
4.2 Package Outline Dimensions (Inch / Millimeter)
SMB DO-214AA Outline Drawing
| Dimension Item | Max Inch | Max mm |
|---|---|---|
| Overall Package Length | 0.2205 | 5.59 |
| Mold Body Length | 0.180 | 4.57 |
| Mold Body Width | 0.155 | 3.94 |
| Mold Body Thickness | 0.096 | 2.44 |
| Terminal Stand-off Height | 0.008 | 0.203 |
| Terminal Thickness | 0.012 | 0.305 |
5. Typical Characteristic Curves Relevant to 150 V High-Voltage Zener
5.1 Power Derating Curve
Linear power drop from 3 W at 75 °C to 0 W at 150 °C junction temperature. Ambient temperature (TA) curve shows faster power de-rating vs lead temperature (TL).
5.2 Peak Surge Power Curve
Non-repetitive rectangular pulse surge power degrades as pulse width increases from 0.1 ms to 100 ms; supports high short-duration voltage surge absorption.
5.3 Zener Temperature Coefficient (14 V ~ 200 V)
- 150 V device features strong positive temperature coefficient (~160 mV/°C at 150 V); VZ rises as junction temperature increases.
5.4 Dynamic Impedance vs Zener Current
- Dynamic impedance ZZ decreases significantly with higher DC Zener current; better voltage regulation at operating currents close to IZM (10 mA).
6. Primary Application Scenarios
- High-voltage circuit overvoltage clamping & transient surge suppression
- Precision 150 V fixed voltage reference circuits
- Power supply rail protection for industrial & communication equipment
- Automotive high-voltage auxiliary circuit voltage limiting
- Low-current high-voltage bias regulation
7. Design & Layout Guidelines
- Thermal Optimization
- Circuit Biasing Recommendation
- Polarity Rule
- Soldering Compliance
8. Series Supplementary Information
- Voltage tolerance suffix "B" = ±5% nominal VZ tolerance
- Full family voltage range: 3.3 V (1SMB5913B) up to 200 V (1SMB5956B)
- All devices share identical SMB mechanical outline and soldering specifications, only electrical Zener parameters differ per part number
- Standard tape & reel packaging available for mass SMT assembly
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