SMAJ22CA LITTELFUSE TVS Diode (Bi-directional) (Diodes Moulded Non Polarised) In Stock
Littelfuse SMAJ22CA is a bidirectional TVS diode in the TRANSZORB SMAJ series with a 22 V standoff voltage and 35.5 V maximum clamping voltage in a compact DO-214AC (SMA) package. It provides 400 W peak pulse power handling and protects sensitive electronics from ESD, lightning surges, and inductive transients with sub-nanosecond response time.
- Manufacturer
- LITTELFUSE
- Package
- Diodes Moulded Non Polarised
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SMAJ22CA Datasheet PDF
- Category
- TVS Diode (Bi-directional)
- Price
- From $0.0388(MOQ 10)
- Temp Range
- -65.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Bidirectional TVS protection with 22 V standoff voltage and 35.5 V maximum clamping voltage for AC and DC line protection
- 400 W peak pulse power dissipation (10/1000 µs waveform) in compact DO-214AC SMA surface mount package
- Sub-nanosecond response time ensures immediate clamping of fast transient voltage spikes and ESD events
- Silicon avalanche technology with breakdown voltage range of 24.4 V to 26.9 V for tight clamp accuracy
Applications
The SMAJ22CA is used to protect telecommunication equipment, industrial I/O interfaces, and automotive electronics from voltage transients on 22 V supply rails. It is commonly placed across data lines, RS-485 bus lines, and power inputs in motor drives and PLCs where bidirectional surge suppression is required. The SMA package allows straightforward PCB mounting with minimal board space, making it suitable for space-constrained protection circuits in consumer and industrial designs.
Specifications
| Pbfree Code | No |
| YTEOL | 6.1 |
| Breakdown Voltage-Max | 26.9V |
| Breakdown Voltage-Min | 24.4V |
| Breakdown Voltage-Nom | 25.65V |
| Clamping Voltage-Max | 35.5V |
| Configuration | SINGLE, 1 CHANNEL |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JEDEC-95 Code | DO-214AC |
| JESD-30 Code | R-PDSO-C2 |
| Non-rep Peak Rev Power Dis-Max | 400W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity | BIDIRECTIONAL |
| Power Dissipation-Max | 3.3W |
| Qualification Status | Not Qualified |
| Reference Standard | IEC-61000-4-2; UL RECOGNIZED |
| Rep Pk Reverse Voltage-Max | 22V |
| Reverse Current-Max | 1 µA |
| Reverse Test Voltage | 22V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Diodes Moulded Non Polarised |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SMAJ22CA:
suggested
suggested
Frequently Asked Questions
What peak pulse power and clamping voltage does the SMAJ22CA provide at a 22 V standoff?
The SMAJ22CA handles 400 W peak pulse power on a 10/1000 µs waveform and clamps transient voltages to a maximum of 35.5 V, keeping downstream components safe on 22 V rails with a silicon avalanche breakdown range of 24.4 V to 26.9 V.
How does the bidirectional configuration of the SMAJ22CA benefit AC line and RS-485 bus protection?
As a bidirectional device, the SMAJ22CA suppresses positive and negative transients equally, making it ideal for protecting AC signal lines, RS-485 differential pairs, and motor driver outputs where transient polarity is unpredictable; its sub-nanosecond response prevents damage from ESD pulses exceeding 22 V in either direction.
Can the SMAJ22CA replace a unidirectional TVS on a 24 V DC power bus, and what trade-offs apply?
Yes, the SMAJ22CA can replace a unidirectional TVS on a 24 V DC bus; however, the bidirectional configuration adds a small leakage current of typically a few microamps at standoff, and the 35.5 V clamp must be verified against the maximum operating voltage of protected ICs rated for 24 V to 26 V supply tolerance.
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About LITTELFUSE
LITTELFUSE is a leading electronic component manufacturer. FindMyChip sources LITTELFUSE ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 10+ | $0.1420 | $1.42 |
| 100+ | $0.0520 | $5.20 |
| 134+ | $0.0430 | $5.76 |
| 5000+ | $0.0388 | $194.00 |
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