# TVS Diode, Unidirectional, 18 V, 29.2 V, DO-214AB (SMC), 2 Pins
**URL**: https://novapart.co/products/3KSMC21AH/tvs-diode-unidirectional-18-v-292-do-214ab-smc-2
**SKU**: 3KSMC21AH
**Manufacturer**: TAIWAN SEMICONDUCTOR
**Category**: Circuit Protection || TVS - Transient Voltage Suppressors || TVS Diodes
**Price**: €0.3930
**Stock**: 200+
**Lead Time**: 134 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (27-Jun-2018) |
| No. Of Pins | 2Pins |
| Tvs Polarity | Unidirectional |
| Product Range | - |
| Qualification | AEC-Q101 |
| Diode Mounting | Surface Mount |
| Diode Case Style | DO-214AB (SMC) |
| Clamping Voltage Max | 29.2V |
| Reverse Standoff Voltage | 18V |
| Maximum Breakdown Voltage | 22.2V |
| Minimum Breakdown Voltage | 20V |
| Operating Temperature Max | 175°C |
| Peak Pulse Power Dissipation | 3kW |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3772980RL/)
**3KSMC21AH**
Taiwan Semiconductor
## **3000W Surface Mount Transient Voltage Suppressor**
## FEATURES
- AEC-Q101 qualified
- Moisture sensitivity level: level 1, per J-STD-020
- Meets IEC 61000-4-2 (Level: 4) / ISO 10605 (Level: L4)
- Meets ISO 7637-2 (Pulse 1/2a/2b/3a/3b)
- RoHS Compliant
- Halogen-free according to IEC 61249-2-21
## APPLICATIONS
- Switching mode power supply (SMPS)
|KEY PARAMETERS|KEY PARAMETERS|KEY PARAMETERS|
|---|---|---|
|PARAMETER|VALUE|UNIT|
|VWM|18|V|
|VBR|21.1|V|
|PPPM|3000|W|
|TJ MAX|175|°C|
|Polarity|Uni-directional||
|Package|DO-214AB (SMC)||
- Motor for BLDC
- Lighting application
- Battery Management System
- Automotive
## MECHANICAL DATA
- Case: DO-214AB (SMC)
- Molding compound meets UL 94V-0 flammability rating
- Terminal: Matte tin plated leads, solderable per J-STD-002
- Meet JESD 201 class 2 whisker test
- Weight: 0.21g (approximately)
DO-214AB (SMC)
|ABSOLUTE MAXIMUM RATINGS (TA= 25°C unless otherwise noted)|ABSOLUTE MAXIMUM RATINGS (TA= 25°C unless otherwise noted)|ABSOLUTE MAXIMUM RATINGS (TA= 25°C unless otherwise noted)|ABSOLUTE MAXIMUM RATINGS (TA= 25°C unless otherwise noted)|
|---|---|---|---|
|PARAMETER|SYMBOL|VALUE|UNIT|
|Non-repetitive peak impulse power dissipation with
10/1000µswaveform(1)|PPPM|3000|W|
|Steady state power dissipation at TL=25°C(2)|PD|8.5|W|
|Peak forward surge current 8.3 ms single half sine-wave|IFSM|300|A|
|Junction temperature|TJ|-55 to +175|°C|
|Storage temperature|TSTG|-55 to +175|°C|
## **Notes:**
1. Non-repetitive current pulse per fig. 3 and derated above TA=25°C per fig. 1
2. Units mounted on PCB (16mm x 16mm Cu pad test board)
1 Version: A1910
**3KSMC21AH**
Taiwan Semiconductor
THERMAL PERFORMANCE PARAMETER SYMBOL TYP UNIT Junction-to-lead thermal resistance per diode RӨJL 17 °C/W Junction-to-ambient thermal resistance per diode RӨJA 50 °C/W Junction-to-case thermal resistance per diode RӨJC 10 °C/W ~~=—===~~ **Thermal Performance Note:** Units mounted on PCB (16mm x 16mm Cu pad test board) ELECTRICAL SPECIFICATIONS (TA = 25°C unless otherwise noted) **IR max VBR at IT** (1) **10/1000 µsVC at IPPM 10/1000 µsRD αT**[(2)] **Part Marking at VWM number code** min typ max IT max max µA V V mA V[(3)] A Ω 10[-4] /°C 3KSMC21AH 3K21A 3 18 20 21.1 22.2 1 29.2 102.7 0.079 9.2 ~~re~~ **Note:** 1. Pulse test: tp < 30 ms
2. To calculate VBR or VC versus junction temperature, use following formulas:
- VBR at TJ = VBR at 25°C x (1 + αT x (TJ-25))
- VC at TJ = VC at 25°C x (1 + αT x (TJ-25))
3. To calculate maximum clamping voltage at other surge level, use the following formula:
- VCmax = VC - RD x (IPP – IPPappli) where IPPappli is the surge current in the application.
## ORDERING INFORMATION ORDERING CODE PACKAGE PACKING 3KSMC21AH V7G SMC 850 / 7" reel 3KSMC21AH V6G SMC 3,000 / 13" reel ~~—-+ —~~
2 Version: A1910
**3KSMC21AH** Taiwan Semiconductor
## CHARACTERISTICS CURVES
(TA = 25°C unless otherwise noted)
## **Fig.1 Pulse Power or Current vs. Initial Junction Temperature**
**==> picture [209 x 163] intentionally omitted <==**
**----- Start of picture text -----**
100
75
50
25
0
0 25 50 75 100 125 150 175
TJ - JUNCTION TEMPERATURE (°C)
DERATING IN PERCENTAGE, %
PEAK PULSE POWER (PPPM) OR CURRENT (IPP)
**----- End of picture text -----**
**Fig.3 Clamping Power Pulse Waveform**
**==> picture [233 x 407] intentionally omitted <==**
**----- Start of picture text -----**
160
Pulse width(td) is defined
140 as the point where the peak
current decays to 50% of IPPM
120 a Peak value IPPM oa-—
_ 100 Rise time tr=10μs to 100% of IPPM -—
80
Re Half value-IPPM/2 —
60 10/1000μs waveform
40 pO Ne
20 td
0 a /_——} —}
0 0.5 1 1.5 2 2.5 3
t – time (ms)
Fig.5 Typical Transient Thermal Impedance
100
10 RthjA
1
0.1
RTHJA
0.01
0.001
0.0001
0.0000010.00001 0.0001 0.001 0.01 0.1 1 10 100
PULSE DURATION (s)
IPPM, PEAK PULSE CURRENT (%)
TRANSIENT THERMAL IMPEDANCE (°C/W)
**----- End of picture text -----**
## **Fig.2 Steady State Power Derating**
**==> picture [202 x 163] intentionally omitted <==**
**----- Start of picture text -----**
10
9 a
8 aa
7 PONT
6 TE NEE IEE
5 ee
4 PN
3 ee
2 Heat sink No
1 16mm x 16mm —\
0 Cu pad test board aN
0 25 50 75 100 125 150 175
LEAD TEMPERATURE (°C)
- POWER DISSIPATION (W)
D
P
**----- End of picture text -----**
## **Fig.4 Typical Junction Capacitance**
**==> picture [214 x 162] intentionally omitted <==**
**----- Start of picture text -----**
100
10
1
f=1.0MHz
Vsig=50mVp-p
0.1
1 10 100
REVERSE VOLTAGE (V)
CAPACITANCE (nF)
**----- End of picture text -----**
**Fig.6 Peak Pulse Power Rating Cure**
**==> picture [228 x 200] intentionally omitted <==**
**----- Start of picture text -----**
1000
100
10
1
0.1
1 10 100 1000 10000
tp, PULSE WIDTH (µs)
, PEAK PULSE POWER (KW)
PPM
P
**----- End of picture text -----**
3 Version: A1910
**3KSMC21AH**
Taiwan Semiconductor
## PACKAGE OUTLINE DIMENSIONS
**DO-214AB (SMC)**
**==> picture [116 x 151] intentionally omitted <==**
**----- Start of picture text -----**
i
——(5ie
**----- End of picture text -----**
## SUGGESTED PAD LAYOUT
**==> picture [120 x 85] intentionally omitted <==**
**----- Start of picture text -----**
E
r
A
**----- End of picture text -----**
## MARKING DIAGRAM
P/N = Marking Code YW = Date Code F = Factory Code
Note: Cathode band for unidirectional products only
4 Version: A1910
**3KSMC21AH**
Taiwan Semiconductor
## Notice
Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf assumes no responsibility or liability for any errors or inaccuracies.
Purchasers are solely responsible for the choice, selection, and use of TSC products and TSC assumes no liability for application assistance or the design of Purchasers’ products.
Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale.
5 Version: A1910
## Links
- [View this product on Novapart](https://novapart.co/products/3KSMC21AH/tvs-diode-unidirectional-18-v-292-do-214ab-smc-2)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/taiwan-semiconductor/3ksmc21ah-v6g/tvs-diode-aec-q101-unidir-do-214ab/dp/3772980RL)
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